| |
| /*--------------------------------------------------------------------*/ |
| /*--- Handle system calls. syscalls.c ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2005 Julian Seward |
| jseward@acm.org |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #include "core.h" |
| #include "pub_core_aspacemgr.h" |
| #include "pub_core_stacktrace.h" |
| #include "pub_core_syscalls.h" |
| #include "priv_syscalls.h" |
| |
| |
| /* All system calls are channelled through here, doing two things: |
| |
| * notify the tool of the events (mem/reg reads, writes) happening |
| |
| * perform the syscall, usually by passing it along to the kernel |
| unmodified. |
| |
| A magical piece of assembly code, VG_(do_syscall)(), in syscall-$PLATFORM.S |
| does the tricky bit of passing a syscall to the kernel, whilst |
| having the simulator retain control. |
| */ |
| |
| /* --------------------------------------------------------------------- |
| A simple atfork() facility for Valgrind's internal use |
| ------------------------------------------------------------------ */ |
| |
| struct atfork { |
| vg_atfork_t pre; |
| vg_atfork_t parent; |
| vg_atfork_t child; |
| }; |
| |
| #define VG_MAX_ATFORK 10 |
| |
| static struct atfork atforks[VG_MAX_ATFORK]; |
| static Int n_atfork; |
| |
| void VG_(atfork)(vg_atfork_t pre, vg_atfork_t parent, vg_atfork_t child) |
| { |
| Int i; |
| |
| for(i = 0; i < n_atfork; i++) { |
| if (atforks[i].pre == pre && |
| atforks[i].parent == parent && |
| atforks[i].child == child) |
| return; |
| } |
| |
| if (n_atfork >= VG_MAX_ATFORK) |
| VG_(core_panic)("Too many VG_(atfork) handlers requested: raise VG_MAX_ATFORK"); |
| |
| atforks[n_atfork].pre = pre; |
| atforks[n_atfork].parent = parent; |
| atforks[n_atfork].child = child; |
| |
| n_atfork++; |
| } |
| |
| void VG_(do_atfork_pre)(ThreadId tid) |
| { |
| Int i; |
| |
| for(i = 0; i < n_atfork; i++) |
| if (atforks[i].pre != NULL) |
| (*atforks[i].pre)(tid); |
| } |
| |
| void VG_(do_atfork_parent)(ThreadId tid) |
| { |
| Int i; |
| |
| for(i = 0; i < n_atfork; i++) |
| if (atforks[i].parent != NULL) |
| (*atforks[i].parent)(tid); |
| } |
| |
| void VG_(do_atfork_child)(ThreadId tid) |
| { |
| Int i; |
| |
| for(i = 0; i < n_atfork; i++) |
| if (atforks[i].child != NULL) |
| (*atforks[i].child)(tid); |
| } |
| |
| /* return true if address range entirely contained within client |
| address space */ |
| Bool VG_(valid_client_addr)(Addr start, SizeT size, ThreadId tid, |
| const Char *syscallname) |
| { |
| Addr end = start+size; |
| Addr cl_base = VG_(client_base); |
| Bool ret; |
| |
| if (size == 0) |
| return True; |
| |
| if (0 && cl_base < 0x10000) |
| cl_base = 0x10000; |
| |
| ret = |
| (end >= start) && |
| start >= cl_base && start < VG_(client_end) && |
| (end <= VG_(client_end)); |
| |
| if (0) |
| VG_(printf)("%s: test=%p-%p client=%p-%p ret=%d\n", |
| syscallname, start, end, cl_base, VG_(client_end), ret); |
| |
| if (!ret && syscallname != NULL) { |
| VG_(message)(Vg_UserMsg, "Warning: client syscall %s tried to modify addresses %p-%p", |
| syscallname, start, end); |
| |
| if (VG_(clo_verbosity) > 1) { |
| VG_(get_and_pp_StackTrace)(tid, VG_(clo_backtrace_size)); |
| } |
| } |
| |
| return ret; |
| } |
| |
| /* --------------------------------------------------------------------- |
| Doing mmap, mremap |
| ------------------------------------------------------------------ */ |
| |
| // Nb: this isn't done as precisely as possible, but it seems that programs |
| // are usually sufficiently well-behaved that the more obscure corner cases |
| // aren't important. Various comments in the few functions below give more |
| // details... njn 2002-Sep-17 |
| |
| /* AFAICT from kernel sources (mm/mprotect.c) and general experimentation, |
| munmap, mprotect (and mremap??) work at the page level. So addresses |
| and lengths must be adjusted for this. */ |
| |
| /* Mash around start and length so that the area exactly covers |
| an integral number of pages. If we don't do that, memcheck's |
| idea of addressible memory diverges from that of the |
| kernel's, which causes the leak detector to crash. */ |
| static |
| void mash_addr_and_len( Addr* a, SizeT* len) |
| { |
| Addr ra; |
| |
| ra = PGROUNDDN(*a); |
| *len = PGROUNDUP(*a + *len) - ra; |
| *a = ra; |
| } |
| |
| static |
| void mmap_segment ( Addr a, SizeT len, UInt prot, UInt mm_flags, Int fd, ULong offset ) |
| { |
| Bool rr, ww, xx; |
| UInt flags; |
| |
| flags = SF_MMAP; |
| |
| if (mm_flags & VKI_MAP_FIXED) |
| flags |= SF_FIXED; |
| if (!(mm_flags & VKI_MAP_PRIVATE)) |
| flags |= SF_SHARED; |
| |
| if (fd != -1) |
| flags |= SF_FILE; |
| |
| VG_(map_fd_segment)(a, len, prot, flags, fd, offset, NULL); |
| |
| rr = prot & VKI_PROT_READ; |
| ww = prot & VKI_PROT_WRITE; |
| xx = prot & VKI_PROT_EXEC; |
| |
| VG_TRACK( new_mem_mmap, a, len, rr, ww, xx ); |
| } |
| |
| static |
| Addr mremap_segment ( Addr old_addr, SizeT old_size, |
| Addr new_addr, SizeT new_size, |
| UInt flags, ThreadId tid) |
| { |
| Addr ret; |
| Segment *seg, *next; |
| |
| old_size = PGROUNDUP(old_size); |
| new_size = PGROUNDUP(new_size); |
| |
| if (PGROUNDDN(old_addr) != old_addr) |
| return -VKI_EINVAL; |
| |
| if (!VG_(valid_client_addr)(old_addr, old_size, tid, "mremap(old_addr)")) |
| return -VKI_EFAULT; |
| |
| /* fixed at the current address means we don't move it */ |
| if ((flags & VKI_MREMAP_FIXED) && (old_addr == new_addr)) |
| flags &= ~(VKI_MREMAP_FIXED|VKI_MREMAP_MAYMOVE); |
| |
| if (flags & VKI_MREMAP_FIXED) { |
| if (PGROUNDDN(new_addr) != new_addr) |
| return -VKI_EINVAL; |
| |
| if (!VG_(valid_client_addr)(new_addr, new_size, tid, "mremap(new_addr)")) |
| return -VKI_ENOMEM; |
| |
| /* check for overlaps */ |
| if ((old_addr < (new_addr+new_size) && |
| (old_addr+old_size) > new_addr) || |
| (new_addr < (old_addr+new_size) && |
| (new_addr+new_size) > old_addr)) |
| return -VKI_EINVAL; |
| } |
| |
| /* Do nothing */ |
| if (!(flags & VKI_MREMAP_FIXED) && new_size == old_size) |
| return old_addr; |
| |
| seg = VG_(find_segment)(old_addr); |
| |
| /* range must be contained within segment */ |
| if (seg == NULL || !VG_(seg_contains)(seg, old_addr, old_size)) |
| return -VKI_EINVAL; |
| |
| next = VG_(find_segment_above_mapped)(old_addr); |
| |
| if (0) |
| VG_(printf)("mremap: old_addr+new_size=%p next->addr=%p flags=%d\n", |
| old_addr+new_size, next->addr, flags); |
| |
| if ((flags & VKI_MREMAP_FIXED) || |
| (next != NULL && (old_addr+new_size) > next->addr)) { |
| /* we're moving the block */ |
| Addr a; |
| |
| if ((flags & (VKI_MREMAP_FIXED|VKI_MREMAP_MAYMOVE)) == 0) |
| return -VKI_ENOMEM; /* not allowed to move */ |
| |
| if ((flags & VKI_MREMAP_FIXED) == 0) |
| new_addr = 0; |
| |
| a = VG_(find_map_space)(new_addr, new_size, True); |
| |
| if ((flags & VKI_MREMAP_FIXED) && a != new_addr) |
| return -VKI_ENOMEM; /* didn't find the place we wanted */ |
| |
| new_addr = a; |
| ret = a; |
| |
| /* we've nailed down the location */ |
| flags |= VKI_MREMAP_FIXED|VKI_MREMAP_MAYMOVE; |
| |
| ret = VG_(do_syscall5)(__NR_mremap, old_addr, old_size, new_size, |
| flags, new_addr); |
| |
| if (ret != new_addr) { |
| vg_assert(VG_(is_kerror)(ret)); |
| return ret; |
| } |
| |
| VG_TRACK(copy_mem_remap, old_addr, new_addr, |
| (old_size < new_size) ? old_size : new_size); |
| |
| if (new_size > old_size) |
| VG_TRACK(new_mem_mmap, new_addr+old_size, new_size-old_size, |
| seg->prot & VKI_PROT_READ, |
| seg->prot & VKI_PROT_WRITE, |
| seg->prot & VKI_PROT_EXEC); |
| VG_TRACK(die_mem_munmap, old_addr, old_size); |
| |
| VG_(map_file_segment)(new_addr, new_size, |
| seg->prot, |
| seg->flags, |
| seg->dev, seg->ino, |
| seg->offset, seg->filename); |
| |
| VG_(munmap)((void *)old_addr, old_size); |
| } else { |
| /* staying in place */ |
| ret = old_addr; |
| |
| if (new_size < old_size) { |
| VG_TRACK(die_mem_munmap, old_addr+new_size, old_size-new_size); |
| VG_(munmap)((void *)(old_addr+new_size), old_size-new_size); |
| } else { |
| /* we've nailed down the location */ |
| flags &= ~VKI_MREMAP_MAYMOVE; |
| |
| if (0) |
| VG_(printf)("mremap: old_addr=%p old_size=%d new_size=%d flags=%d\n", |
| old_addr, old_size, new_size, flags); |
| |
| ret = VG_(do_syscall5)(__NR_mremap, old_addr, old_size, new_size, |
| flags, 0); |
| |
| if (ret != old_addr) |
| return ret; |
| |
| VG_TRACK(new_mem_mmap, old_addr+old_size, new_size-old_size, |
| seg->prot & VKI_PROT_READ, |
| seg->prot & VKI_PROT_WRITE, |
| seg->prot & VKI_PROT_EXEC); |
| |
| VG_(map_file_segment)(old_addr+old_size, new_size-old_size, |
| seg->prot, |
| seg->flags, |
| seg->dev, seg->ino, |
| seg->offset, seg->filename); |
| } |
| } |
| |
| return ret; |
| } |
| |
| |
| /* Is this a Linux kernel error return value? */ |
| /* From: |
| http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/sysdeps/unix/sysv/ |
| linux/i386/sysdep.h? |
| rev=1.28&content-type=text/x-cvsweb-markup&cvsroot=glibc |
| |
| \begin{quote}: |
| |
| Linux uses a negative return value to indicate syscall errors, |
| unlike most Unices, which use the condition codes' carry flag. |
| |
| Since version 2.1 the return value of a system call might be |
| negative even if the call succeeded. E.g., the `lseek' system call |
| might return a large offset. Therefore we must not anymore test |
| for < 0, but test for a real error by making sure the value in %eax |
| is a real error number. Linus said he will make sure the no syscall |
| returns a value in -1 .. -4095 as a valid result so we can safely |
| test with -4095. |
| |
| END QUOTE |
| */ |
| Bool VG_(is_kerror) ( Word res ) |
| { |
| if (res >= -4095 && res <= -1) |
| return True; |
| else |
| return False; |
| } |
| |
| /* One of these is allocated for each open file descriptor. */ |
| |
| typedef struct OpenFd |
| { |
| Int fd; /* The file descriptor */ |
| Char *pathname; /* NULL if not a regular file or unknown */ |
| ExeContext *where; /* NULL if inherited from parent */ |
| struct OpenFd *next, *prev; |
| } OpenFd; |
| |
| /* List of allocated file descriptors. */ |
| |
| static OpenFd *allocated_fds; |
| |
| /* Count of open file descriptors. */ |
| |
| static int fd_count = 0; |
| |
| |
| |
| /* Given a file descriptor, attempt to deduce its filename. To do |
| this, we use /proc/self/fd/<FD>. If this doesn't point to a file, |
| or if it doesn't exist, we just return NULL. The caller is |
| responsible for copying the contents of buf out immediately. */ |
| |
| static HChar resolve_filename_buf[VKI_PATH_MAX]; |
| |
| HChar* VG_(resolve_filename_nodup) ( Int fd ) |
| { |
| HChar tmp[64]; |
| |
| VG_(sprintf)(tmp, "/proc/self/fd/%d", fd); |
| VG_(memset)(resolve_filename_buf, 0, VKI_PATH_MAX); |
| |
| if (VG_(readlink)(tmp, resolve_filename_buf, VKI_PATH_MAX) == -1) |
| return NULL; |
| |
| return (resolve_filename_buf[0] == '/') |
| ? resolve_filename_buf |
| : NULL; |
| } |
| |
| /* Same as resolve_filename_nodup, except that the result is copied |
| into new memory which the caller is responsible for freeing. */ |
| |
| HChar* VG_(resolve_filename) ( Int fd ) |
| { |
| HChar* transient = VG_(resolve_filename_nodup)(fd); |
| return transient |
| ? VG_(arena_strdup)(VG_AR_CORE, transient) |
| : NULL; |
| } |
| |
| |
| /* Note the fact that a file descriptor was just closed. */ |
| |
| static |
| void record_fd_close(ThreadId tid, Int fd) |
| { |
| OpenFd *i = allocated_fds; |
| |
| if (fd >= VG_(fd_hard_limit)) |
| return; /* Valgrind internal */ |
| |
| while(i) { |
| if(i->fd == fd) { |
| if(i->prev) |
| i->prev->next = i->next; |
| else |
| allocated_fds = i->next; |
| if(i->next) |
| i->next->prev = i->prev; |
| if(i->pathname) |
| VG_(arena_free) (VG_AR_CORE, i->pathname); |
| VG_(arena_free) (VG_AR_CORE, i); |
| fd_count--; |
| break; |
| } |
| i = i->next; |
| } |
| } |
| |
| /* Note the fact that a file descriptor was just opened. If the |
| tid is -1, this indicates an inherited fd. If the pathname is NULL, |
| this either indicates a non-standard file (i.e. a pipe or socket or |
| some such thing) or that we don't know the filename. If the fd is |
| already open, then we're probably doing a dup2() to an existing fd, |
| so just overwrite the existing one. */ |
| |
| void VG_(record_fd_open)(ThreadId tid, Int fd, char *pathname) |
| { |
| OpenFd *i; |
| |
| if (fd >= VG_(fd_hard_limit)) |
| return; /* Valgrind internal */ |
| |
| /* Check to see if this fd is already open. */ |
| i = allocated_fds; |
| while (i) { |
| if (i->fd == fd) { |
| if (i->pathname) VG_(arena_free)(VG_AR_CORE, i->pathname); |
| break; |
| } |
| i = i->next; |
| } |
| |
| /* Not already one: allocate an OpenFd */ |
| if (i == NULL) { |
| i = VG_(arena_malloc)(VG_AR_CORE, sizeof(OpenFd)); |
| |
| i->prev = NULL; |
| i->next = allocated_fds; |
| if(allocated_fds) allocated_fds->prev = i; |
| allocated_fds = i; |
| fd_count++; |
| } |
| |
| i->fd = fd; |
| i->pathname = pathname; |
| i->where = (tid == -1) ? NULL : VG_(record_ExeContext)(tid); |
| } |
| |
| static |
| Char *unix2name(struct vki_sockaddr_un *sa, UInt len, Char *name) |
| { |
| if (sa == NULL || len == 0 || sa->sun_path[0] == '\0') { |
| VG_(sprintf)(name, "<unknown>"); |
| } else { |
| VG_(sprintf)(name, "%s", sa->sun_path); |
| } |
| |
| return name; |
| } |
| |
| static |
| Char *inet2name(struct vki_sockaddr_in *sa, UInt len, Char *name) |
| { |
| if (sa == NULL || len == 0) { |
| VG_(sprintf)(name, "<unknown>"); |
| } else { |
| UInt addr = sa->sin_addr.s_addr; |
| |
| if (addr == 0) { |
| VG_(sprintf)(name, "<unbound>"); |
| } else { |
| VG_(sprintf)(name, "%u.%u.%u.%u:%u", |
| addr & 0xFF, (addr>>8) & 0xFF, |
| (addr>>16) & 0xFF, (addr>>24) & 0xFF, |
| vki_ntohs(sa->sin_port)); |
| } |
| } |
| |
| return name; |
| } |
| |
| |
| /* |
| * Try get some details about a socket. |
| */ |
| |
| static void |
| getsockdetails(int fd) |
| { |
| union u { |
| struct vki_sockaddr a; |
| struct vki_sockaddr_in in; |
| struct vki_sockaddr_un un; |
| } laddr; |
| UInt llen; |
| |
| llen = sizeof(laddr); |
| VG_(memset)(&laddr, 0, llen); |
| |
| if(VG_(getsockname)(fd, (struct vki_sockaddr *)&(laddr.a), &llen) != -1) { |
| switch(laddr.a.sa_family) { |
| case VKI_AF_INET: { |
| static char lname[32]; |
| static char pname[32]; |
| struct vki_sockaddr_in paddr; |
| UInt plen = sizeof(struct vki_sockaddr_in); |
| |
| if(VG_(getpeername)(fd, (struct vki_sockaddr *)&paddr, &plen) != -1) { |
| VG_(message)(Vg_UserMsg, "Open AF_INET socket %d: %s <-> %s", fd, |
| inet2name(&(laddr.in), llen, lname), |
| inet2name(&paddr, plen, pname)); |
| } else { |
| VG_(message)(Vg_UserMsg, "Open AF_INET socket %d: %s <-> unbound", |
| fd, inet2name(&(laddr.in), llen, lname)); |
| } |
| return; |
| } |
| case VKI_AF_UNIX: { |
| static char lname[256]; |
| VG_(message)(Vg_UserMsg, "Open AF_UNIX socket %d: %s", fd, |
| unix2name(&(laddr.un), llen, lname)); |
| return; |
| } |
| default: |
| VG_(message)(Vg_UserMsg, "Open pf-%d socket %d:", |
| laddr.a.sa_family, fd); |
| return; |
| } |
| } |
| |
| VG_(message)(Vg_UserMsg, "Open socket %d:", fd); |
| } |
| |
| |
| /* Dump out a summary, and a more detailed list, of open file descriptors. */ |
| void VG_(show_open_fds) () |
| { |
| OpenFd *i = allocated_fds; |
| |
| VG_(message)(Vg_UserMsg, "FILE DESCRIPTORS: %d open at exit.", fd_count); |
| |
| while(i) { |
| if(i->pathname) { |
| VG_(message)(Vg_UserMsg, "Open file descriptor %d: %s", i->fd, |
| i->pathname); |
| } else { |
| int val; |
| UInt len = sizeof(val); |
| |
| if (VG_(getsockopt)(i->fd, VKI_SOL_SOCKET, VKI_SO_TYPE, &val, &len) == -1) { |
| VG_(message)(Vg_UserMsg, "Open file descriptor %d:", i->fd); |
| } else { |
| getsockdetails(i->fd); |
| } |
| } |
| |
| if(i->where) { |
| VG_(pp_ExeContext)(i->where); |
| VG_(message)(Vg_UserMsg, ""); |
| } else { |
| VG_(message)(Vg_UserMsg, " <inherited from parent>"); |
| VG_(message)(Vg_UserMsg, ""); |
| } |
| |
| i = i->next; |
| } |
| |
| VG_(message)(Vg_UserMsg, ""); |
| } |
| |
| /* If /proc/self/fd doesn't exist for some weird reason (like you've |
| got a kernel that doesn't have /proc support compiled in), then we |
| need to find out what file descriptors we inherited from our parent |
| process the hard way - by checking each fd in turn. */ |
| |
| static |
| void do_hacky_preopened() |
| { |
| struct vki_rlimit lim; |
| unsigned int count; |
| int i; |
| |
| if (VG_(getrlimit) (VKI_RLIMIT_NOFILE, &lim) == -1) { |
| /* Hmm. getrlimit() failed. Now we're screwed, so just choose |
| an arbitrarily high number. 1024 happens to be the limit in |
| the 2.4 kernels. */ |
| count = 1024; |
| } else { |
| count = lim.rlim_cur; |
| } |
| |
| for (i = 0; i < count; i++) |
| if(VG_(fcntl)(i, VKI_F_GETFL, 0) != -1) |
| VG_(record_fd_open)(-1, i, NULL); |
| } |
| |
| /* Initialize the list of open file descriptors with the file descriptors |
| we inherited from out parent process. */ |
| |
| void VG_(init_preopened_fds)() |
| { |
| int f, ret; |
| struct vki_dirent d; |
| |
| f = VG_(open)("/proc/self/fd", VKI_O_RDONLY, 0); |
| if(f == -1) { |
| do_hacky_preopened(); |
| return; |
| } |
| |
| while((ret = VG_(getdents)(f, &d, sizeof(d))) != 0) { |
| if(ret == -1) |
| goto out; |
| |
| if(VG_(strcmp)(d.d_name, ".") && VG_(strcmp)(d.d_name, "..")) { |
| int fno = VG_(atoll)(d.d_name); |
| |
| if(fno != f) |
| if(VG_(clo_track_fds)) |
| VG_(record_fd_open)(-1, fno, VG_(resolve_filename)(fno)); |
| } |
| |
| VG_(lseek)(f, d.d_off, VKI_SEEK_SET); |
| } |
| |
| out: |
| VG_(close)(f); |
| } |
| |
| static |
| Char *strdupcat ( const Char *s1, const Char *s2, ArenaId aid ) |
| { |
| UInt len = VG_(strlen) ( s1 ) + VG_(strlen) ( s2 ) + 1; |
| Char *result = VG_(arena_malloc) ( aid, len ); |
| VG_(strcpy) ( result, s1 ); |
| VG_(strcat) ( result, s2 ); |
| return result; |
| } |
| |
| static |
| void pre_mem_read_sendmsg ( ThreadId tid, |
| Char *msg, Addr base, SizeT size ) |
| { |
| Char *outmsg = strdupcat ( "socketcall.sendmsg", msg, VG_AR_CORE ); |
| PRE_MEM_READ( outmsg, base, size ); |
| |
| VG_(arena_free) ( VG_AR_CORE, outmsg ); |
| } |
| |
| static |
| void pre_mem_write_recvmsg ( ThreadId tid, |
| Char *msg, Addr base, SizeT size ) |
| { |
| Char *outmsg = strdupcat ( "socketcall.recvmsg", msg, VG_AR_CORE ); |
| PRE_MEM_WRITE( outmsg, base, size ); |
| VG_(arena_free) ( VG_AR_CORE, outmsg ); |
| } |
| |
| static |
| void post_mem_write_recvmsg ( ThreadId tid, |
| Char *fieldName, Addr base, SizeT size ) |
| { |
| POST_MEM_WRITE( base, size ); |
| } |
| |
| static |
| void msghdr_foreachfield ( |
| ThreadId tid, |
| struct vki_msghdr *msg, |
| void (*foreach_func)( ThreadId, Char *, Addr, SizeT ) |
| ) |
| { |
| if ( !msg ) |
| return; |
| |
| foreach_func ( tid, "(msg)", (Addr)msg, sizeof( struct vki_msghdr ) ); |
| |
| if ( msg->msg_name ) |
| foreach_func ( tid, |
| "(msg.msg_name)", |
| (Addr)msg->msg_name, msg->msg_namelen ); |
| |
| if ( msg->msg_iov ) { |
| struct vki_iovec *iov = msg->msg_iov; |
| UInt i; |
| |
| foreach_func ( tid, |
| "(msg.msg_iov)", |
| (Addr)iov, msg->msg_iovlen * sizeof( struct vki_iovec ) ); |
| |
| for ( i = 0; i < msg->msg_iovlen; ++i, ++iov ) |
| foreach_func ( tid, |
| "(msg.msg_iov[i]", |
| (Addr)iov->iov_base, iov->iov_len ); |
| } |
| |
| if ( msg->msg_control ) |
| foreach_func ( tid, |
| "(msg.msg_control)", |
| (Addr)msg->msg_control, msg->msg_controllen ); |
| } |
| |
| static void check_cmsg_for_fds(ThreadId tid, struct vki_msghdr *msg) |
| { |
| struct vki_cmsghdr *cm = VKI_CMSG_FIRSTHDR(msg); |
| |
| while (cm) { |
| if (cm->cmsg_level == VKI_SOL_SOCKET && |
| cm->cmsg_type == VKI_SCM_RIGHTS ) { |
| int *fds = (int *) VKI_CMSG_DATA(cm); |
| int fdc = (cm->cmsg_len - VKI_CMSG_ALIGN(sizeof(struct vki_cmsghdr))) |
| / sizeof(int); |
| int i; |
| |
| for (i = 0; i < fdc; i++) |
| if(VG_(clo_track_fds)) |
| // XXX: must we check the range on these fds with |
| // VG_(fd_allowed)()? |
| VG_(record_fd_open) (tid, fds[i], VG_(resolve_filename)(fds[i])); |
| } |
| |
| cm = VKI_CMSG_NXTHDR(msg, cm); |
| } |
| } |
| |
| static |
| void pre_mem_read_sockaddr ( ThreadId tid, |
| Char *description, |
| struct vki_sockaddr *sa, UInt salen ) |
| { |
| Char *outmsg; |
| |
| /* NULL/zero-length sockaddrs are legal */ |
| if ( sa == NULL || salen == 0 ) return; |
| |
| outmsg = VG_(arena_malloc) ( VG_AR_CORE, |
| VG_(strlen)( description ) + 30 ); |
| |
| VG_(sprintf) ( outmsg, description, ".sa_family" ); |
| PRE_MEM_READ( outmsg, (Addr) &sa->sa_family, sizeof(vki_sa_family_t)); |
| |
| switch (sa->sa_family) { |
| |
| case VKI_AF_UNIX: |
| VG_(sprintf) ( outmsg, description, ".sun_path" ); |
| PRE_MEM_RASCIIZ( outmsg, |
| (Addr) ((struct vki_sockaddr_un *) sa)->sun_path); |
| break; |
| |
| case VKI_AF_INET: |
| VG_(sprintf) ( outmsg, description, ".sin_port" ); |
| PRE_MEM_READ( outmsg, |
| (Addr) &((struct vki_sockaddr_in *) sa)->sin_port, |
| sizeof (((struct vki_sockaddr_in *) sa)->sin_port)); |
| VG_(sprintf) ( outmsg, description, ".sin_addr" ); |
| PRE_MEM_READ( outmsg, |
| (Addr) &((struct vki_sockaddr_in *) sa)->sin_addr, |
| sizeof (struct vki_in_addr)); |
| break; |
| |
| case VKI_AF_INET6: |
| VG_(sprintf) ( outmsg, description, ".sin6_port" ); |
| PRE_MEM_READ( outmsg, |
| (Addr) &((struct vki_sockaddr_in6 *) sa)->sin6_port, |
| sizeof (((struct vki_sockaddr_in6 *) sa)->sin6_port)); |
| VG_(sprintf) ( outmsg, description, ".sin6_flowinfo" ); |
| PRE_MEM_READ( outmsg, |
| (Addr) &((struct vki_sockaddr_in6 *) sa)->sin6_flowinfo, |
| sizeof (__vki_u32)); |
| VG_(sprintf) ( outmsg, description, ".sin6_addr" ); |
| PRE_MEM_READ( outmsg, |
| (Addr) &((struct vki_sockaddr_in6 *) sa)->sin6_addr, |
| sizeof (struct vki_in6_addr)); |
| VG_(sprintf) ( outmsg, description, ".sin6_scope_id" ); |
| PRE_MEM_READ( outmsg, |
| (Addr) &((struct vki_sockaddr_in6 *) sa)->sin6_scope_id, |
| sizeof (__vki_u32)); |
| break; |
| |
| default: |
| VG_(sprintf) ( outmsg, description, "" ); |
| PRE_MEM_READ( outmsg, (Addr) sa, salen ); |
| break; |
| } |
| |
| VG_(arena_free) ( VG_AR_CORE, outmsg ); |
| } |
| |
| /* Dereference a pointer to a UInt. */ |
| static UInt deref_UInt ( ThreadId tid, Addr a, Char* s ) |
| { |
| UInt* a_p = (UInt*)a; |
| PRE_MEM_READ( s, (Addr)a_p, sizeof(UInt) ); |
| if (a_p == NULL) |
| return 0; |
| else |
| return *a_p; |
| } |
| |
| static |
| void buf_and_len_pre_check( ThreadId tid, Addr buf_p, Addr buflen_p, |
| Char* buf_s, Char* buflen_s ) |
| { |
| if (VG_(defined_pre_mem_write)()) { |
| UInt buflen_in = deref_UInt( tid, buflen_p, buflen_s); |
| if (buflen_in > 0) { |
| TL_(pre_mem_write) ( Vg_CoreSysCall, tid, buf_s, buf_p, buflen_in ); |
| } |
| } |
| } |
| |
| static |
| void buf_and_len_post_check( ThreadId tid, Int res, |
| Addr buf_p, Addr buflen_p, Char* s ) |
| { |
| if (!VG_(is_kerror)(res) && VG_(defined_post_mem_write)()) { |
| UInt buflen_out = deref_UInt( tid, buflen_p, s); |
| if (buflen_out > 0 && buf_p != (Addr)NULL) { |
| TL_(post_mem_write) ( Vg_CoreSysCall, tid, buf_p, buflen_out ); |
| } |
| } |
| } |
| |
| /* --------------------------------------------------------------------- |
| Data seg end, for brk() |
| ------------------------------------------------------------------ */ |
| |
| static Addr do_brk(Addr newbrk) |
| { |
| Addr ret = VG_(brk_limit); |
| static const Bool debug = False; |
| Segment *seg; |
| Addr current, newaddr; |
| |
| |
| if (debug) |
| VG_(printf)("\ndo_brk: brk_base=%p brk_limit=%p newbrk=%p\n", |
| VG_(brk_base), VG_(brk_limit), newbrk); |
| |
| # if 0 |
| if (0) show_segments("in_brk"); |
| # endif |
| |
| if (newbrk < VG_(brk_base) || newbrk >= VG_(client_end)) |
| return VG_(brk_limit); |
| |
| /* brk isn't allowed to grow over anything else */ |
| seg = VG_(find_segment)(VG_(brk_limit) -1); |
| |
| vg_assert(seg != NULL); |
| |
| if (0) |
| VG_(printf)("brk_limit=%p seg->addr=%p seg->end=%p\n", |
| VG_(brk_limit), seg->addr, seg->addr+seg->len); |
| vg_assert(VG_(brk_limit) >= seg->addr && VG_(brk_limit) |
| <= (seg->addr + seg->len)); |
| |
| seg = VG_(find_segment_above_mapped)(VG_(brk_limit)-1); |
| if (0 && seg) |
| VG_(printf)("NEXT addr = %p\n", seg->addr); |
| if (seg != NULL && newbrk > seg->addr) |
| return VG_(brk_limit); |
| |
| current = PGROUNDUP(VG_(brk_limit)); |
| newaddr = PGROUNDUP(newbrk); |
| if (newaddr != current) { |
| |
| /* new brk in a new page - fix the mappings */ |
| if (newbrk > VG_(brk_limit)) { |
| |
| if (debug) |
| VG_(printf)(" extending brk: current=%p newaddr=%p delta=%d\n", |
| current, newaddr, newaddr-current); |
| |
| if (newaddr == current) { |
| ret = newbrk; |
| } else if ((void*)-1 != VG_(mmap)((void*)current, newaddr-current, |
| VKI_PROT_READ|VKI_PROT_WRITE|VKI_PROT_EXEC, |
| VKI_MAP_PRIVATE|VKI_MAP_ANONYMOUS|VKI_MAP_FIXED|VKI_MAP_CLIENT, |
| SF_FIXED|SF_BRK, -1, 0)) |
| { |
| ret = newbrk; |
| } |
| } else { |
| vg_assert(newbrk < VG_(brk_limit)); |
| |
| if (debug) |
| VG_(printf)(" shrinking brk: current=%p newaddr=%p delta=%d\n", |
| current, newaddr, current-newaddr); |
| |
| if (newaddr != current) { |
| int res = VG_(munmap)((void *)newaddr, current - newaddr); |
| vg_assert(0 == res); |
| } |
| ret = newbrk; |
| } |
| } else |
| ret = newbrk; |
| |
| VG_(brk_limit) = ret; |
| |
| return ret; |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Vet file descriptors for sanity |
| ------------------------------------------------------------------ */ |
| |
| /* Return true if we're allowed to use or create this fd */ |
| Bool VG_(fd_allowed)(Int fd, const Char *syscallname, ThreadId tid, Bool soft) |
| { |
| if (fd < 0 || fd >= VG_(fd_hard_limit) || fd == VG_(clo_log_fd)) { |
| VG_(message)(Vg_UserMsg, |
| "Warning: invalid file descriptor %d in syscall %s()", |
| fd, syscallname); |
| if (fd == VG_(clo_log_fd)) |
| VG_(message)(Vg_UserMsg, |
| " Use --log-fd=<number> to select an alternative log fd."); |
| if (VG_(clo_verbosity) > 1) { |
| VG_(get_and_pp_StackTrace)(tid, VG_(clo_backtrace_size)); |
| } |
| return False; |
| } |
| else if (soft && fd >= VG_(fd_soft_limit)) { |
| return False; |
| } |
| return True; |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Deal with a bunch of socket-related syscalls |
| ------------------------------------------------------------------ */ |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_socketpair) ( ThreadId tid, |
| UWord arg0, UWord arg1, |
| UWord arg2, UWord arg3 ) |
| { |
| /* int socketpair(int d, int type, int protocol, int sv[2]); */ |
| PRE_MEM_WRITE( "socketcall.socketpair(sv)", |
| arg3, 2*sizeof(int) ); |
| } |
| |
| UWord |
| VG_(generic_POST_sys_socketpair) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, |
| UWord arg2, UWord arg3 ) |
| { |
| UWord r = res; |
| Int fd1 = ((Int*)arg3)[0]; |
| Int fd2 = ((Int*)arg3)[1]; |
| POST_MEM_WRITE( arg3, 2*sizeof(int) ); |
| if (!VG_(fd_allowed)(fd1, "socketcall.socketpair", tid, True) || |
| !VG_(fd_allowed)(fd2, "socketcall.socketpair", tid, True)) { |
| VG_(close)(fd1); |
| VG_(close)(fd2); |
| r = -VKI_EMFILE; |
| } else { |
| POST_MEM_WRITE( arg3, 2*sizeof(int) ); |
| if (VG_(clo_track_fds)) { |
| VG_(record_fd_open)(tid, fd1, NULL); |
| VG_(record_fd_open)(tid, fd2, NULL); |
| } |
| } |
| return r; |
| } |
| |
| /* ------ */ |
| |
| UWord |
| VG_(generic_POST_sys_socket) ( ThreadId tid, UWord res ) |
| { |
| UWord r = res; |
| if (!VG_(fd_allowed)(res, "socket", tid, True)) { |
| VG_(close)(res); |
| r = -VKI_EMFILE; |
| } else { |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, res, NULL); |
| } |
| return r; |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_bind) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int bind(int sockfd, struct sockaddr *my_addr, |
| int addrlen); */ |
| pre_mem_read_sockaddr( |
| tid, "socketcall.bind(my_addr.%s)", |
| (struct vki_sockaddr *) arg1, arg2 |
| ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_accept) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int accept(int s, struct sockaddr *addr, int *addrlen); */ |
| Addr addr_p = arg1; |
| Addr addrlen_p = arg2; |
| if (addr_p != (Addr)NULL) |
| buf_and_len_pre_check ( tid, addr_p, addrlen_p, |
| "socketcall.accept(addr)", |
| "socketcall.accept(addrlen_in)" ); |
| } |
| |
| UWord |
| VG_(generic_POST_sys_accept) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| UWord r = res; |
| if (!VG_(fd_allowed)(res, "accept", tid, True)) { |
| VG_(close)(res); |
| r = -VKI_EMFILE; |
| } else { |
| Addr addr_p = arg1; |
| Addr addrlen_p = arg2; |
| if (addr_p != (Addr)NULL) |
| buf_and_len_post_check ( tid, res, addr_p, addrlen_p, |
| "socketcall.accept(addrlen_out)" ); |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, res, NULL); |
| } |
| return r; |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_sendto) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4, UWord arg5 ) |
| { |
| /* int sendto(int s, const void *msg, int len, |
| unsigned int flags, |
| const struct sockaddr *to, int tolen); */ |
| PRE_MEM_READ( "socketcall.sendto(msg)", |
| arg1, /* msg */ |
| arg2 /* len */ ); |
| pre_mem_read_sockaddr( |
| tid, "socketcall.sendto(to.%s)", |
| (struct vki_sockaddr *) arg4, arg5 |
| ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_send) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int send(int s, const void *msg, size_t len, int flags); */ |
| PRE_MEM_READ( "socketcall.send(msg)", |
| arg1, /* msg */ |
| arg2 /* len */ ); |
| |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_recvfrom) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4, UWord arg5 ) |
| { |
| /* int recvfrom(int s, void *buf, int len, unsigned int flags, |
| struct sockaddr *from, int *fromlen); */ |
| Addr buf_p = arg1; |
| Int len = arg2; |
| Addr from_p = arg4; |
| Addr fromlen_p = arg5; |
| PRE_MEM_WRITE( "socketcall.recvfrom(buf)", buf_p, len ); |
| if (from_p != (Addr)NULL) |
| buf_and_len_pre_check ( tid, from_p, fromlen_p, |
| "socketcall.recvfrom(from)", |
| "socketcall.recvfrom(fromlen_in)" ); |
| } |
| |
| void |
| VG_(generic_POST_sys_recvfrom) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4, UWord arg5 ) |
| { |
| Addr buf_p = arg1; |
| Int len = arg2; |
| Addr from_p = arg4; |
| Addr fromlen_p = arg5; |
| |
| if (from_p != (Addr)NULL) |
| buf_and_len_post_check ( tid, res, from_p, fromlen_p, |
| "socketcall.recvfrom(fromlen_out)" ); |
| POST_MEM_WRITE( buf_p, len ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_recv) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int recv(int s, void *buf, int len, unsigned int flags); */ |
| /* man 2 recv says: |
| The recv call is normally used only on a connected socket |
| (see connect(2)) and is identical to recvfrom with a NULL |
| from parameter. |
| */ |
| PRE_MEM_WRITE( "socketcall.recv(buf)", |
| arg1, /* buf */ |
| arg2 /* len */ ); |
| } |
| |
| void |
| VG_(generic_POST_sys_recv) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| if (res >= 0 && arg1 != 0) { |
| POST_MEM_WRITE( arg1, /* buf */ |
| arg2 /* len */ ); |
| } |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_connect) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int connect(int sockfd, |
| struct sockaddr *serv_addr, int addrlen ); */ |
| PRE_MEM_READ( "socketcall.connect(serv_addr.sa_family)", |
| arg1, /* serv_addr */ |
| sizeof(vki_sa_family_t)); |
| pre_mem_read_sockaddr( tid, |
| "socketcall.connect(serv_addr.%s)", |
| (struct vki_sockaddr *) arg1, arg2); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_setsockopt) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4 ) |
| { |
| /* int setsockopt(int s, int level, int optname, |
| const void *optval, int optlen); */ |
| PRE_MEM_READ( "socketcall.setsockopt(optval)", |
| arg3, /* optval */ |
| arg4 /* optlen */ ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_getsockopt) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4 ) |
| { |
| /* int getsockopt(int s, int level, int optname, |
| void *optval, socklen_t *optlen); */ |
| Addr optval_p = arg3; |
| Addr optlen_p = arg4; |
| /* vg_assert(sizeof(socklen_t) == sizeof(UInt)); */ |
| if (optval_p != (Addr)NULL) |
| buf_and_len_pre_check ( tid, optval_p, optlen_p, |
| "socketcall.getsockopt(optval)", |
| "socketcall.getsockopt(optlen)" ); |
| } |
| |
| void |
| VG_(generic_POST_sys_getsockopt) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4 ) |
| { |
| Addr optval_p = arg3; |
| Addr optlen_p = arg4; |
| if (optval_p != (Addr)NULL) |
| buf_and_len_post_check ( tid, res, optval_p, optlen_p, |
| "socketcall.getsockopt(optlen_out)" ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_getsockname) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int getsockname(int s, struct sockaddr* name, int* namelen) */ |
| Addr name_p = arg1; |
| Addr namelen_p = arg2; |
| /* Nb: name_p cannot be NULL */ |
| buf_and_len_pre_check ( tid, name_p, namelen_p, |
| "socketcall.getsockname(name)", |
| "socketcall.getsockname(namelen_in)" ); |
| } |
| |
| void |
| VG_(generic_POST_sys_getsockname) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| Addr name_p = arg1; |
| Addr namelen_p = arg2; |
| buf_and_len_post_check ( tid, res, name_p, namelen_p, |
| "socketcall.getsockname(namelen_out)" ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_getpeername) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int getpeername(int s, struct sockaddr* name, int* namelen) */ |
| Addr name_p = arg1; |
| Addr namelen_p = arg2; |
| /* Nb: name_p cannot be NULL */ |
| buf_and_len_pre_check ( tid, name_p, namelen_p, |
| "socketcall.getpeername(name)", |
| "socketcall.getpeername(namelen_in)" ); |
| } |
| |
| void |
| VG_(generic_POST_sys_getpeername) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| Addr name_p = arg1; |
| Addr namelen_p = arg2; |
| buf_and_len_post_check ( tid, res, name_p, namelen_p, |
| "socketcall.getpeername(namelen_out)" ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_sendmsg) ( ThreadId tid, |
| UWord arg0, UWord arg1 ) |
| { |
| /* int sendmsg(int s, const struct msghdr *msg, int flags); */ |
| struct vki_msghdr *msg = (struct vki_msghdr *)arg1; |
| msghdr_foreachfield ( tid, msg, pre_mem_read_sendmsg ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_recvmsg) ( ThreadId tid, |
| UWord arg0, UWord arg1 ) |
| { |
| /* int recvmsg(int s, struct msghdr *msg, int flags); */ |
| struct vki_msghdr *msg = (struct vki_msghdr *)arg1; |
| msghdr_foreachfield ( tid, msg, pre_mem_write_recvmsg ); |
| } |
| |
| void |
| VG_(generic_POST_sys_recvmsg) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1 ) |
| { |
| struct vki_msghdr *msg = (struct vki_msghdr *)arg1; |
| msghdr_foreachfield( tid, msg, post_mem_write_recvmsg ); |
| check_cmsg_for_fds( tid, msg ); |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Deal with a bunch of IPC related syscalls |
| ------------------------------------------------------------------ */ |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_semop) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int semop(int semid, struct sembuf *sops, unsigned nsops); */ |
| PRE_MEM_READ( "semop(sops)", arg1, arg2 * sizeof(struct vki_sembuf) ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_semtimedop) ( ThreadId tid, |
| UWord arg0, UWord arg1, |
| UWord arg2, UWord arg3 ) |
| { |
| /* int semtimedop(int semid, struct sembuf *sops, unsigned nsops, |
| struct timespec *timeout); */ |
| PRE_MEM_READ( "semtimedop(sops)", arg1, arg2 * sizeof(struct vki_sembuf) ); |
| if (arg3 != 0) |
| PRE_MEM_READ( "semtimedop(timeout)", arg3, sizeof(struct vki_timespec) ); |
| } |
| |
| /* ------ */ |
| |
| static |
| UInt get_sem_count( Int semid ) |
| { |
| struct vki_semid_ds buf; |
| union vki_semun arg; |
| long res; |
| |
| arg.buf = &buf; |
| |
| #ifdef __NR_semctl |
| res = VG_(do_syscall4)(__NR_semctl, semid, 0, VKI_IPC_STAT, *(UWord *)&arg); |
| #else |
| res = VG_(do_syscall5)(__NR_ipc, 3 /* IPCOP_semctl */, semid, 0, |
| VKI_IPC_STAT, (UWord)&arg); |
| #endif |
| if ( VG_(is_kerror)(res) ) |
| return 0; |
| |
| return buf.sem_nsems; |
| } |
| |
| void |
| VG_(generic_PRE_sys_semctl) ( ThreadId tid, |
| UWord arg0, UWord arg1, |
| UWord arg2, UWord arg3 ) |
| { |
| /* int semctl(int semid, int semnum, int cmd, ...); */ |
| union vki_semun arg = *(union vki_semun *)&arg3; |
| UInt nsems; |
| switch (arg2 /* cmd */) { |
| case VKI_IPC_INFO: |
| case VKI_SEM_INFO: |
| case VKI_IPC_INFO|VKI_IPC_64: |
| case VKI_SEM_INFO|VKI_IPC_64: |
| PRE_MEM_WRITE( "semctl(IPC_INFO, arg.buf)", |
| (Addr)arg.buf, sizeof(struct vki_seminfo) ); |
| break; |
| case VKI_IPC_STAT: |
| case VKI_SEM_STAT: |
| PRE_MEM_WRITE( "semctl(IPC_STAT, arg.buf)", |
| (Addr)arg.buf, sizeof(struct vki_semid_ds) ); |
| break; |
| case VKI_IPC_STAT|VKI_IPC_64: |
| case VKI_SEM_STAT|VKI_IPC_64: |
| PRE_MEM_WRITE( "semctl(IPC_STAT, arg.buf)", |
| (Addr)arg.buf, sizeof(struct vki_semid64_ds) ); |
| break; |
| case VKI_IPC_SET: |
| PRE_MEM_READ( "semctl(IPC_SET, arg.buf)", |
| (Addr)arg.buf, sizeof(struct vki_semid_ds) ); |
| break; |
| case VKI_IPC_SET|VKI_IPC_64: |
| PRE_MEM_READ( "semctl(IPC_SET, arg.buf)", |
| (Addr)arg.buf, sizeof(struct vki_semid64_ds) ); |
| break; |
| case VKI_GETALL: |
| case VKI_GETALL|VKI_IPC_64: |
| nsems = get_sem_count( arg0 ); |
| PRE_MEM_WRITE( "semctl(IPC_GETALL, arg.array)", |
| (Addr)arg.array, sizeof(unsigned short) * nsems ); |
| break; |
| case VKI_SETALL: |
| case VKI_SETALL|VKI_IPC_64: |
| nsems = get_sem_count( arg0 ); |
| PRE_MEM_READ( "semctl(IPC_SETALL, arg.array)", |
| (Addr)arg.array, sizeof(unsigned short) * nsems ); |
| break; |
| } |
| } |
| |
| void |
| VG_(generic_POST_sys_semctl) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, |
| UWord arg2, UWord arg3 ) |
| { |
| union vki_semun arg = *(union vki_semun *)&arg3; |
| UInt nsems; |
| switch (arg2 /* cmd */) { |
| case VKI_IPC_INFO: |
| case VKI_SEM_INFO: |
| case VKI_IPC_INFO|VKI_IPC_64: |
| case VKI_SEM_INFO|VKI_IPC_64: |
| POST_MEM_WRITE( (Addr)arg.buf, sizeof(struct vki_seminfo) ); |
| break; |
| case VKI_IPC_STAT: |
| case VKI_SEM_STAT: |
| POST_MEM_WRITE( (Addr)arg.buf, sizeof(struct vki_semid_ds) ); |
| break; |
| case VKI_IPC_STAT|VKI_IPC_64: |
| case VKI_SEM_STAT|VKI_IPC_64: |
| POST_MEM_WRITE( (Addr)arg.buf, sizeof(struct vki_semid64_ds) ); |
| break; |
| case VKI_GETALL: |
| case VKI_GETALL|VKI_IPC_64: |
| nsems = get_sem_count( arg0 ); |
| POST_MEM_WRITE( (Addr)arg.array, sizeof(unsigned short) * nsems ); |
| break; |
| } |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_msgsnd) ( ThreadId tid, |
| UWord arg0, UWord arg1, |
| UWord arg2, UWord arg3 ) |
| { |
| /* int msgsnd(int msqid, struct msgbuf *msgp, size_t msgsz, int msgflg); */ |
| struct vki_msgbuf *msgp = (struct vki_msgbuf *)arg1; |
| PRE_MEM_READ( "msgsnd(msgp->mtype)", (Addr)&msgp->mtype, sizeof(msgp->mtype) ); |
| PRE_MEM_READ( "msgsnd(msgp->mtext)", (Addr)&msgp->mtext, arg2 ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_msgrcv) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4 ) |
| { |
| /* ssize_t msgrcv(int msqid, struct msgbuf *msgp, size_t msgsz, |
| long msgtyp, int msgflg); */ |
| struct vki_msgbuf *msgp = (struct vki_msgbuf *)arg1; |
| PRE_MEM_WRITE( "msgrcv(msgp->mtype)", (Addr)&msgp->mtype, sizeof(msgp->mtype) ); |
| PRE_MEM_WRITE( "msgrcv(msgp->mtext)", (Addr)&msgp->mtext, arg2 ); |
| } |
| |
| void |
| VG_(generic_POST_sys_msgrcv) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4 ) |
| { |
| struct vki_msgbuf *msgp = (struct vki_msgbuf *)arg1; |
| POST_MEM_WRITE( (Addr)&msgp->mtype, sizeof(msgp->mtype) ); |
| POST_MEM_WRITE( (Addr)&msgp->mtext, res ); |
| } |
| |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_msgctl) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int msgctl(int msqid, int cmd, struct msqid_ds *buf); */ |
| switch (arg1 /* cmd */) { |
| case VKI_IPC_INFO: |
| case VKI_MSG_INFO: |
| case VKI_IPC_INFO|VKI_IPC_64: |
| case VKI_MSG_INFO|VKI_IPC_64: |
| PRE_MEM_WRITE( "msgctl(IPC_INFO, buf)", |
| arg2, sizeof(struct vki_msginfo) ); |
| break; |
| case VKI_IPC_STAT: |
| case VKI_MSG_STAT: |
| PRE_MEM_WRITE( "msgctl(IPC_STAT, buf)", |
| arg2, sizeof(struct vki_msqid_ds) ); |
| break; |
| case VKI_IPC_STAT|VKI_IPC_64: |
| case VKI_MSG_STAT|VKI_IPC_64: |
| PRE_MEM_WRITE( "msgctl(IPC_STAT, arg.buf)", |
| arg2, sizeof(struct vki_msqid64_ds) ); |
| break; |
| case VKI_IPC_SET: |
| PRE_MEM_READ( "msgctl(IPC_SET, arg.buf)", |
| arg2, sizeof(struct vki_msqid_ds) ); |
| break; |
| case VKI_IPC_SET|VKI_IPC_64: |
| PRE_MEM_READ( "msgctl(IPC_SET, arg.buf)", |
| arg2, sizeof(struct vki_msqid64_ds) ); |
| break; |
| } |
| } |
| |
| void |
| VG_(generic_POST_sys_msgctl) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| switch (arg1 /* cmd */) { |
| case VKI_IPC_INFO: |
| case VKI_MSG_INFO: |
| case VKI_IPC_INFO|VKI_IPC_64: |
| case VKI_MSG_INFO|VKI_IPC_64: |
| POST_MEM_WRITE( arg2, sizeof(struct vki_msginfo) ); |
| break; |
| case VKI_IPC_STAT: |
| case VKI_MSG_STAT: |
| POST_MEM_WRITE( arg2, sizeof(struct vki_msqid_ds) ); |
| break; |
| case VKI_IPC_STAT|VKI_IPC_64: |
| case VKI_MSG_STAT|VKI_IPC_64: |
| POST_MEM_WRITE( arg2, sizeof(struct vki_msqid64_ds) ); |
| break; |
| } |
| } |
| |
| /* ------ */ |
| |
| static |
| UInt get_shm_size ( Int shmid ) |
| { |
| #ifdef __NR_shmctl |
| struct vki_shmid64_ds buf; |
| long __res = VG_(do_syscall3)(__NR_shmctl, shmid, VKI_IPC_STAT, (UWord)&buf); |
| #else |
| struct vki_shmid_ds buf; |
| long __res = VG_(do_syscall5)(__NR_ipc, 24 /* IPCOP_shmctl */, shmid, |
| VKI_IPC_STAT, 0, (UWord)&buf); |
| #endif |
| if ( VG_(is_kerror) ( __res ) ) |
| return 0; |
| |
| return buf.shm_segsz; |
| } |
| |
| UWord |
| VG_(generic_PRE_sys_shmat) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* void *shmat(int shmid, const void *shmaddr, int shmflg); */ |
| UInt segmentSize = get_shm_size ( arg0 ); |
| if (arg1 == 0) |
| arg1 = VG_(find_map_space)(0, segmentSize, True); |
| else if (!VG_(valid_client_addr)(arg1, segmentSize, tid, "shmat")) |
| arg1 = 0; |
| return arg1; |
| } |
| |
| void |
| VG_(generic_POST_sys_shmat) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| UInt segmentSize = get_shm_size ( arg0 ); |
| if ( segmentSize > 0 ) { |
| UInt prot = VKI_PROT_READ|VKI_PROT_WRITE; |
| /* we don't distinguish whether it's read-only or |
| * read-write -- it doesn't matter really. */ |
| VG_TRACK( new_mem_mmap, res, segmentSize, True, True, False ); |
| |
| if (!(arg2 & 010000)) /* = SHM_RDONLY */ |
| prot &= ~VKI_PROT_WRITE; |
| VG_(map_segment)(res, segmentSize, prot, SF_SHARED|SF_SHM); |
| } |
| } |
| |
| /* ------ */ |
| |
| Bool |
| VG_(generic_PRE_sys_shmdt) ( ThreadId tid, UWord arg0 ) |
| { |
| /* int shmdt(const void *shmaddr); */ |
| return VG_(valid_client_addr)(arg0, 1, tid, "shmdt"); |
| } |
| |
| void |
| VG_(generic_POST_sys_shmdt) ( ThreadId tid, UWord res, UWord arg0 ) |
| { |
| Segment *s = VG_(find_segment)(arg0); |
| |
| if (s != NULL && (s->flags & SF_SHM) && VG_(seg_contains)(s, arg0, 1)) { |
| VG_TRACK( die_mem_munmap, s->addr, s->len ); |
| VG_(unmap_range)(s->addr, s->len); |
| } |
| } |
| /* ------ */ |
| |
| void |
| VG_(generic_PRE_sys_shmctl) ( ThreadId tid, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| /* int shmctl(int shmid, int cmd, struct shmid_ds *buf); */ |
| switch (arg1 /* cmd */) { |
| case VKI_IPC_INFO: |
| PRE_MEM_WRITE( "shmctl(IPC_INFO, buf)", |
| arg2, sizeof(struct vki_shminfo) ); |
| break; |
| case VKI_IPC_INFO|VKI_IPC_64: |
| PRE_MEM_WRITE( "shmctl(IPC_INFO, buf)", |
| arg2, sizeof(struct vki_shminfo64) ); |
| break; |
| case VKI_SHM_INFO: |
| case VKI_SHM_INFO|VKI_IPC_64: |
| PRE_MEM_WRITE( "shmctl(SHM_INFO, buf)", |
| arg2, sizeof(struct vki_shm_info) ); |
| break; |
| case VKI_IPC_STAT: |
| case VKI_SHM_STAT: |
| PRE_MEM_WRITE( "shmctl(IPC_STAT, buf)", |
| arg2, sizeof(struct vki_shmid_ds) ); |
| break; |
| case VKI_IPC_STAT|VKI_IPC_64: |
| case VKI_SHM_STAT|VKI_IPC_64: |
| PRE_MEM_WRITE( "shmctl(IPC_STAT, arg.buf)", |
| arg2, sizeof(struct vki_shmid64_ds) ); |
| break; |
| case VKI_IPC_SET: |
| PRE_MEM_READ( "shmctl(IPC_SET, arg.buf)", |
| arg2, sizeof(struct vki_shmid_ds) ); |
| break; |
| case VKI_IPC_SET|VKI_IPC_64: |
| PRE_MEM_READ( "shmctl(IPC_SET, arg.buf)", |
| arg2, sizeof(struct vki_shmid64_ds) ); |
| break; |
| } |
| } |
| |
| void |
| VG_(generic_POST_sys_shmctl) ( ThreadId tid, |
| UWord res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| switch (arg1 /* cmd */) { |
| case VKI_IPC_INFO: |
| POST_MEM_WRITE( arg2, sizeof(struct vki_shminfo) ); |
| break; |
| case VKI_IPC_INFO|VKI_IPC_64: |
| POST_MEM_WRITE( arg2, sizeof(struct vki_shminfo64) ); |
| break; |
| case VKI_SHM_INFO: |
| case VKI_SHM_INFO|VKI_IPC_64: |
| POST_MEM_WRITE( arg2, sizeof(struct vki_shm_info) ); |
| break; |
| case VKI_IPC_STAT: |
| case VKI_SHM_STAT: |
| POST_MEM_WRITE( arg2, sizeof(struct vki_shmid_ds) ); |
| break; |
| case VKI_IPC_STAT|VKI_IPC_64: |
| case VKI_SHM_STAT|VKI_IPC_64: |
| POST_MEM_WRITE( arg2, sizeof(struct vki_shmid64_ds) ); |
| break; |
| } |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| The Main Entertainment ... syscall wrappers |
| ------------------------------------------------------------------ */ |
| |
| /* Note: the PRE() and POST() wrappers are for the actual functions |
| implementing the system calls in the OS kernel. These mostly have |
| names like sys_write(); a few have names like old_mmap(). See the |
| comment for VGA_(syscall_table)[] for important info about the __NR_foo |
| constants and their relationship to the sys_foo() functions. |
| |
| Some notes about names used for syscalls and args: |
| - For the --trace-syscalls=yes output, we use the sys_foo() name to avoid |
| ambiguity. |
| |
| - For error messages, we generally use a somewhat generic name |
| for the syscall (eg. "write" rather than "sys_write"). This should be |
| good enough for the average user to understand what is happening, |
| without confusing them with names like "sys_write". |
| |
| - Also, for error messages the arg names are mostly taken from the man |
| pages (even though many of those man pages are really for glibc |
| functions of the same name), rather than from the OS kernel source, |
| for the same reason -- a user presented with a "bogus foo(bar)" arg |
| will most likely look at the "foo" man page to see which is the "bar" |
| arg. |
| |
| Note that we use our own vki_* types. The one exception is in |
| PRE_REG_READn calls, where pointer types haven't been changed, because |
| they don't need to be -- eg. for "foo*" to be used, the type foo need not |
| be visible. |
| |
| XXX: some of these are arch-specific, and should be factored out. |
| */ |
| |
| #define PRE(name, f) PRE_TEMPLATE( , vgArch_gen, name, f) |
| #define POST(name) POST_TEMPLATE( , vgArch_gen, name) |
| |
| // Combine two 32-bit values into a 64-bit value |
| #define LOHI64(lo,hi) ( (lo) | ((ULong)(hi) << 32) ) |
| |
| //PRE(sys_exit_group, Special) |
| //{ |
| // VG_(core_panic)("syscall exit_group() not caught by the scheduler?!"); |
| //} |
| |
| PRE(sys_exit, Special) |
| { |
| /* simple; just make this thread exit */ |
| PRINT("exit( %d )", ARG1); |
| PRE_REG_READ1(void, "exit", int, exitcode); |
| tst->exitreason = VgSrc_ExitSyscall; |
| tst->os_state.exitcode = ARG1; |
| /* exit doesn't return anything (it doesn't return.) |
| Nevertheless, if we don't do this, the result-not-assigned- |
| yet-you-said-you-were-Special assertion in the main syscall |
| handling logic will fire. Hence .. |
| */ |
| SET_RESULT(0); |
| } |
| |
| PRE(sys_sched_yield, MayBlock) |
| { |
| PRINT("sched_yield()"); |
| PRE_REG_READ0(long, "sys_sched_yield"); |
| } |
| |
| PRE(sys_ni_syscall, Special) |
| { |
| PRINT("non-existent syscall! (ni_syscall)"); |
| PRE_REG_READ0(long, "ni_syscall"); |
| SET_RESULT( -VKI_ENOSYS ); |
| } |
| |
| PRE(sys_set_tid_address, 0) |
| { |
| PRINT("sys_set_tid_address ( %p )", ARG1); |
| PRE_REG_READ1(long, "set_tid_address", int *, tidptr); |
| } |
| |
| PRE(sys_iopl, 0) |
| { |
| PRINT("sys_iopl ( %d )", ARG1); |
| PRE_REG_READ1(long, "iopl", unsigned long, level); |
| } |
| |
| PRE(sys_setxattr, MayBlock) |
| { |
| PRINT("sys_setxattr ( %p, %p, %p, %llu, %d )", |
| ARG1, ARG2, ARG3, (ULong)ARG4, ARG5); |
| PRE_REG_READ5(long, "setxattr", |
| char *, path, char *, name, |
| void *, value, vki_size_t, size, int, flags); |
| PRE_MEM_RASCIIZ( "setxattr(path)", ARG1 ); |
| PRE_MEM_RASCIIZ( "setxattr(name)", ARG2 ); |
| PRE_MEM_READ( "setxattr(value)", ARG3, ARG4 ); |
| } |
| |
| PRE(sys_lsetxattr, MayBlock) |
| { |
| PRINT("sys_lsetxattr ( %p, %p, %p, %llu, %d )", |
| ARG1, ARG2, ARG3, (ULong)ARG4, ARG5); |
| PRE_REG_READ5(long, "lsetxattr", |
| char *, path, char *, name, |
| void *, value, vki_size_t, size, int, flags); |
| PRE_MEM_RASCIIZ( "lsetxattr(path)", ARG1 ); |
| PRE_MEM_RASCIIZ( "lsetxattr(name)", ARG2 ); |
| PRE_MEM_READ( "lsetxattr(value)", ARG3, ARG4 ); |
| } |
| |
| PRE(sys_fsetxattr, MayBlock) |
| { |
| PRINT("sys_fsetxattr ( %d, %p, %p, %llu, %d )", |
| ARG1, ARG2, ARG3, (ULong)ARG4, ARG5); |
| PRE_REG_READ5(long, "fsetxattr", |
| int, fd, char *, name, void *, value, |
| vki_size_t, size, int, flags); |
| PRE_MEM_RASCIIZ( "fsetxattr(name)", ARG2 ); |
| PRE_MEM_READ( "fsetxattr(value)", ARG3, ARG4 ); |
| } |
| |
| PRE(sys_getxattr, MayBlock) |
| { |
| PRINT("sys_getxattr ( %p, %p, %p, %llu )", ARG1,ARG2,ARG3, (ULong)ARG4); |
| PRE_REG_READ4(ssize_t, "getxattr", |
| char *, path, char *, name, void *, value, vki_size_t, size); |
| PRE_MEM_RASCIIZ( "getxattr(path)", ARG1 ); |
| PRE_MEM_RASCIIZ( "getxattr(name)", ARG2 ); |
| PRE_MEM_WRITE( "getxattr(value)", ARG3, ARG4 ); |
| } |
| |
| POST(sys_getxattr) |
| { |
| if (RES > 0 && ARG3 != (Addr)NULL) { |
| POST_MEM_WRITE( ARG3, RES ); |
| } |
| } |
| |
| PRE(sys_lgetxattr, MayBlock) |
| { |
| PRINT("sys_lgetxattr ( %p, %p, %p, %llu )", ARG1,ARG2,ARG3, (ULong)ARG4); |
| PRE_REG_READ4(ssize_t, "lgetxattr", |
| char *, path, char *, name, void *, value, vki_size_t, size); |
| PRE_MEM_RASCIIZ( "lgetxattr(path)", ARG1 ); |
| PRE_MEM_RASCIIZ( "lgetxattr(name)", ARG2 ); |
| PRE_MEM_WRITE( "lgetxattr(value)", ARG3, ARG4 ); |
| } |
| |
| POST(sys_lgetxattr) |
| { |
| if (RES > 0 && ARG3 != (Addr)NULL) { |
| POST_MEM_WRITE( ARG3, RES ); |
| } |
| } |
| |
| PRE(sys_fgetxattr, MayBlock) |
| { |
| PRINT("sys_fgetxattr ( %d, %p, %p, %llu )", ARG1, ARG2, ARG3, (ULong)ARG4); |
| PRE_REG_READ4(ssize_t, "fgetxattr", |
| int, fd, char *, name, void *, value, vki_size_t, size); |
| PRE_MEM_RASCIIZ( "fgetxattr(name)", ARG2 ); |
| PRE_MEM_WRITE( "fgetxattr(value)", ARG3, ARG4 ); |
| } |
| |
| POST(sys_fgetxattr) |
| { |
| if (RES > 0 && ARG3 != (Addr)NULL) |
| POST_MEM_WRITE( ARG3, RES ); |
| } |
| |
| PRE(sys_listxattr, MayBlock) |
| { |
| PRINT("sys_listxattr ( %p, %p, %llu )", ARG1, ARG2, (ULong)ARG3); |
| PRE_REG_READ3(ssize_t, "listxattr", |
| char *, path, char *, list, vki_size_t, size); |
| PRE_MEM_RASCIIZ( "listxattr(path)", ARG1 ); |
| PRE_MEM_WRITE( "listxattr(list)", ARG2, ARG3 ); |
| } |
| |
| POST(sys_listxattr) |
| { |
| if (RES > 0 && ARG2 != (Addr)NULL) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_llistxattr, MayBlock) |
| { |
| PRINT("sys_llistxattr ( %p, %p, %llu )", ARG1, ARG2, (ULong)ARG3); |
| PRE_REG_READ3(ssize_t, "llistxattr", |
| char *, path, char *, list, vki_size_t, size); |
| PRE_MEM_RASCIIZ( "llistxattr(path)", ARG1 ); |
| PRE_MEM_WRITE( "llistxattr(list)", ARG2, ARG3 ); |
| } |
| |
| POST(sys_llistxattr) |
| { |
| if (RES > 0 && ARG2 != (Addr)NULL) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_flistxattr, MayBlock) |
| { |
| PRINT("sys_flistxattr ( %d, %p, %llu )", ARG1, ARG2, (ULong)ARG3); |
| PRE_REG_READ3(ssize_t, "flistxattr", |
| int, fd, char *, list, vki_size_t, size); |
| PRE_MEM_WRITE( "flistxattr(list)", ARG2, ARG3 ); |
| } |
| |
| POST(sys_flistxattr) |
| { |
| if (RES > 0 && ARG2 != (Addr)NULL) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_removexattr, MayBlock) |
| { |
| PRINT("sys_removexattr ( %p, %p )", ARG1, ARG2); |
| PRE_REG_READ2(long, "removexattr", char *, path, char *, name); |
| PRE_MEM_RASCIIZ( "removexattr(path)", ARG1 ); |
| PRE_MEM_RASCIIZ( "removexattr(name)", ARG2 ); |
| } |
| |
| PRE(sys_lremovexattr, MayBlock) |
| { |
| PRINT("sys_lremovexattr ( %p, %p )", ARG1, ARG2); |
| PRE_REG_READ2(long, "lremovexattr", char *, path, char *, name); |
| PRE_MEM_RASCIIZ( "lremovexattr(path)", ARG1 ); |
| PRE_MEM_RASCIIZ( "lremovexattr(name)", ARG2 ); |
| } |
| |
| PRE(sys_fremovexattr, MayBlock) |
| { |
| PRINT("sys_fremovexattr ( %d, %p )", ARG1, ARG2); |
| PRE_REG_READ2(long, "fremovexattr", int, fd, char *, name); |
| PRE_MEM_RASCIIZ( "fremovexattr(name)", ARG2 ); |
| } |
| |
| PRE(sys_quotactl, 0) |
| { |
| PRINT("sys_quotactl (0x%x, %p, 0x%x, 0x%x )", ARG1,ARG2,ARG3, ARG4); |
| PRE_REG_READ4(long, "quotactl", |
| unsigned int, cmd, const char *, special, vki_qid_t, id, |
| void *, addr); |
| PRE_MEM_RASCIIZ( "quotactl(special)", ARG2 ); |
| } |
| |
| // XXX: this wrapper is only suitable for 32-bit platforms |
| PRE(sys_lookup_dcookie, 0) |
| { |
| PRINT("sys_lookup_dcookie (0x%llx, %p, %d)", LOHI64(ARG1,ARG2), ARG3, ARG4); |
| PRE_REG_READ4(long, "lookup_dcookie", |
| vki_u32, cookie_low32, vki_u32, cookie_high32, |
| char *, buf, vki_size_t, len); |
| PRE_MEM_WRITE( "lookup_dcookie(buf)", ARG3, ARG4); |
| } |
| |
| POST(sys_lookup_dcookie) |
| { |
| if (ARG3 != (Addr)NULL) |
| POST_MEM_WRITE( ARG3, RES); |
| } |
| |
| PRE(sys_fsync, MayBlock) |
| { |
| PRINT("sys_fsync ( %d )", ARG1); |
| PRE_REG_READ1(long, "fsync", unsigned int, fd); |
| } |
| |
| PRE(sys_fdatasync, MayBlock) |
| { |
| PRINT("sys_fdatasync ( %d )", ARG1); |
| PRE_REG_READ1(long, "fdatasync", unsigned int, fd); |
| } |
| |
| PRE(sys_msync, MayBlock) |
| { |
| PRINT("sys_msync ( %p, %llu, %d )", ARG1,(ULong)ARG2,ARG3); |
| PRE_REG_READ3(long, "msync", |
| unsigned long, start, vki_size_t, length, int, flags); |
| PRE_MEM_READ( "msync(start)", ARG1, ARG2 ); |
| } |
| |
| // Nb: getpmsg() and putpmsg() are special additional syscalls used in early |
| // versions of LiS (Linux Streams). They are not part of the kernel. |
| // Therefore, we have to provide this type ourself, rather than getting it |
| // from the kernel sources. |
| struct vki_pmsg_strbuf { |
| int maxlen; /* no. of bytes in buffer */ |
| int len; /* no. of bytes returned */ |
| vki_caddr_t buf; /* pointer to data */ |
| }; |
| |
| PRE(sys_getpmsg, MayBlock) |
| { |
| /* LiS getpmsg from http://www.gcom.com/home/linux/lis/ */ |
| struct vki_pmsg_strbuf *ctrl; |
| struct vki_pmsg_strbuf *data; |
| PRINT("sys_getpmsg ( %d, %p, %p, %p, %p )", ARG1,ARG2,ARG3,ARG4,ARG5); |
| PRE_REG_READ5(int, "getpmsg", |
| int, fd, struct strbuf *, ctrl, struct strbuf *, data, |
| int *, bandp, int *, flagsp); |
| ctrl = (struct vki_pmsg_strbuf *)ARG2; |
| data = (struct vki_pmsg_strbuf *)ARG3; |
| if (ctrl && ctrl->maxlen > 0) |
| PRE_MEM_WRITE( "getpmsg(ctrl)", (Addr)ctrl->buf, ctrl->maxlen); |
| if (data && data->maxlen > 0) |
| PRE_MEM_WRITE( "getpmsg(data)", (Addr)data->buf, data->maxlen); |
| if (ARG4) |
| PRE_MEM_WRITE( "getpmsg(bandp)", (Addr)ARG4, sizeof(int)); |
| if (ARG5) |
| PRE_MEM_WRITE( "getpmsg(flagsp)", (Addr)ARG5, sizeof(int)); |
| } |
| |
| POST(sys_getpmsg) |
| { |
| struct vki_pmsg_strbuf *ctrl; |
| struct vki_pmsg_strbuf *data; |
| |
| ctrl = (struct vki_pmsg_strbuf *)ARG2; |
| data = (struct vki_pmsg_strbuf *)ARG3; |
| if (RES == 0 && ctrl && ctrl->len > 0) { |
| POST_MEM_WRITE( (Addr)ctrl->buf, ctrl->len); |
| } |
| if (RES == 0 && data && data->len > 0) { |
| POST_MEM_WRITE( (Addr)data->buf, data->len); |
| } |
| } |
| |
| PRE(sys_putpmsg, MayBlock) |
| { |
| /* LiS putpmsg from http://www.gcom.com/home/linux/lis/ */ |
| struct vki_pmsg_strbuf *ctrl; |
| struct vki_pmsg_strbuf *data; |
| PRINT("sys_putpmsg ( %d, %p, %p, %d, %d )", ARG1,ARG2,ARG3,ARG4,ARG5); |
| PRE_REG_READ5(int, "putpmsg", |
| int, fd, struct strbuf *, ctrl, struct strbuf *, data, |
| int, band, int, flags); |
| ctrl = (struct vki_pmsg_strbuf *)ARG2; |
| data = (struct vki_pmsg_strbuf *)ARG3; |
| if (ctrl && ctrl->len > 0) |
| PRE_MEM_READ( "putpmsg(ctrl)", (Addr)ctrl->buf, ctrl->len); |
| if (data && data->len > 0) |
| PRE_MEM_READ( "putpmsg(data)", (Addr)data->buf, data->len); |
| } |
| |
| PRE(sys_getitimer, 0) |
| { |
| PRINT("sys_getitimer ( %d, %p )", ARG1, ARG2); |
| PRE_REG_READ2(long, "getitimer", int, which, struct itimerval *, value); |
| PRE_MEM_WRITE( "getitimer(value)", ARG2, sizeof(struct vki_itimerval) ); |
| } |
| |
| POST(sys_getitimer) |
| { |
| if (ARG2 != (Addr)NULL) { |
| POST_MEM_WRITE(ARG2, sizeof(struct vki_itimerval)); |
| } |
| } |
| |
| PRE(sys_setitimer, 0) |
| { |
| PRINT("sys_setitimer ( %d, %p, %p )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "setitimer", |
| int, which, |
| struct itimerval *, value, struct itimerval *, ovalue); |
| if (ARG2 != (Addr)NULL) |
| PRE_MEM_READ( "setitimer(value)", ARG2, sizeof(struct vki_itimerval) ); |
| if (ARG3 != (Addr)NULL) |
| PRE_MEM_WRITE( "setitimer(ovalue)", ARG3, sizeof(struct vki_itimerval)); |
| } |
| |
| POST(sys_setitimer) |
| { |
| if (ARG3 != (Addr)NULL) { |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_itimerval)); |
| } |
| } |
| |
| PRE(sys_chroot, 0) |
| { |
| PRINT("sys_chroot ( %p )", ARG1); |
| PRE_REG_READ1(long, "chroot", const char *, path); |
| PRE_MEM_RASCIIZ( "chroot(path)", ARG1 ); |
| } |
| |
| PRE(sys_madvise, MayBlock) |
| { |
| PRINT("sys_madvise ( %p, %llu, %d )", ARG1,(ULong)ARG2,ARG3); |
| PRE_REG_READ3(long, "madvise", |
| unsigned long, start, vki_size_t, length, int, advice); |
| } |
| |
| PRE(sys_mremap, Special) |
| { |
| // Nb: this is different to the glibc version described in the man pages, |
| // which lacks the fifth 'new_address' argument. |
| PRINT("sys_mremap ( %p, %llu, %d, 0x%x, %p )", |
| ARG1, (ULong)ARG2, ARG3, ARG4, ARG5); |
| PRE_REG_READ5(unsigned long, "mremap", |
| unsigned long, old_addr, unsigned long, old_size, |
| unsigned long, new_size, unsigned long, flags, |
| unsigned long, new_addr); |
| SET_RESULT( mremap_segment((Addr)ARG1, ARG2, (Addr)ARG5, ARG3, ARG4, tid) ); |
| } |
| |
| PRE(sys_nice, 0) |
| { |
| PRINT("sys_nice ( %d )", ARG1); |
| PRE_REG_READ1(long, "nice", int, inc); |
| } |
| |
| PRE(sys_sched_getscheduler, 0) |
| { |
| PRINT("sys_sched_getscheduler ( %d )", ARG1); |
| PRE_REG_READ1(long, "sched_getscheduler", vki_pid_t, pid); |
| } |
| |
| PRE(sys_sched_setscheduler, 0) |
| { |
| PRINT("sys_sched_setscheduler ( %d, %d, %p )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "sched_setscheduler", |
| vki_pid_t, pid, int, policy, struct sched_param *, p); |
| if (ARG3 != 0) |
| PRE_MEM_READ( "sched_setscheduler(p)", |
| ARG3, sizeof(struct vki_sched_param)); |
| } |
| |
| PRE(sys_mlock, MayBlock) |
| { |
| PRINT("sys_mlock ( %p, %llu )", ARG1, (ULong)ARG2); |
| PRE_REG_READ2(long, "mlock", unsigned long, addr, vki_size_t, len); |
| } |
| |
| PRE(sys_munlock, MayBlock) |
| { |
| PRINT("sys_munlock ( %p, %llu )", ARG1, (ULong)ARG2); |
| PRE_REG_READ2(long, "munlock", unsigned long, addr, vki_size_t, len); |
| } |
| |
| PRE(sys_mlockall, MayBlock) |
| { |
| PRINT("sys_mlockall ( %x )", ARG1); |
| PRE_REG_READ1(long, "mlockall", int, flags); |
| } |
| |
| PRE(sys_munlockall, MayBlock) |
| { |
| PRINT("sys_munlockall ( )"); |
| PRE_REG_READ0(long, "munlockall"); |
| } |
| |
| PRE(sys_sched_get_priority_max, 0) |
| { |
| PRINT("sched_get_priority_max ( %d )", ARG1); |
| PRE_REG_READ1(long, "sched_get_priority_max", int, policy); |
| } |
| |
| PRE(sys_sched_get_priority_min, 0) |
| { |
| PRINT("sched_get_priority_min ( %d )", ARG1); |
| PRE_REG_READ1(long, "sched_get_priority_min", int, policy); |
| } |
| |
| PRE(sys_setpriority, 0) |
| { |
| PRINT("sys_setpriority ( %d, %d, %d )", ARG1, ARG2, ARG3); |
| PRE_REG_READ3(long, "setpriority", int, which, int, who, int, prio); |
| } |
| |
| PRE(sys_getpriority, 0) |
| { |
| PRINT("sys_getpriority ( %d, %d )", ARG1, ARG2); |
| PRE_REG_READ2(long, "getpriority", int, which, int, who); |
| } |
| |
| PRE(sys_setregid16, 0) |
| { |
| PRINT("sys_setregid16 ( %d, %d )", ARG1, ARG2); |
| PRE_REG_READ2(long, "setregid16", vki_old_gid_t, rgid, vki_old_gid_t, egid); |
| } |
| |
| // XXX: only for 32-bit archs |
| PRE(sys_pwrite64, MayBlock) |
| { |
| PRINT("sys_pwrite64 ( %d, %p, %llu, %lld )", |
| ARG1, ARG2, (ULong)ARG3, LOHI64(ARG4,ARG5)); |
| PRE_REG_READ5(ssize_t, "pwrite64", |
| unsigned int, fd, const char *, buf, vki_size_t, count, |
| vki_u32, offset_low32, vki_u32, offset_high32); |
| PRE_MEM_READ( "pwrite64(buf)", ARG2, ARG3 ); |
| } |
| |
| PRE(sys_sync, MayBlock) |
| { |
| PRINT("sys_sync ( )"); |
| PRE_REG_READ0(long, "sync"); |
| } |
| |
| PRE(sys_fstatfs, 0) |
| { |
| PRINT("sys_fstatfs ( %d, %p )",ARG1,ARG2); |
| PRE_REG_READ2(long, "fstatfs", |
| unsigned int, fd, struct statfs *, buf); |
| PRE_MEM_WRITE( "fstatfs(buf)", ARG2, sizeof(struct vki_statfs) ); |
| } |
| |
| POST(sys_fstatfs) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_statfs) ); |
| } |
| |
| PRE(sys_fstatfs64, 0) |
| { |
| PRINT("sys_fstatfs64 ( %d, %llu, %p )",ARG1,(ULong)ARG2,ARG3); |
| PRE_REG_READ3(long, "fstatfs64", |
| unsigned int, fd, vki_size_t, size, struct statfs64 *, buf); |
| PRE_MEM_WRITE( "fstatfs64(buf)", ARG3, ARG2 ); |
| } |
| |
| POST(sys_fstatfs64) |
| { |
| POST_MEM_WRITE( ARG3, ARG2 ); |
| } |
| |
| PRE(sys_getsid, 0) |
| { |
| PRINT("sys_getsid ( %d )", ARG1); |
| PRE_REG_READ1(long, "getsid", vki_pid_t, pid); |
| } |
| |
| // XXX: only for 32-bit archs |
| PRE(sys_pread64, MayBlock) |
| { |
| PRINT("sys_pread64 ( %d, %p, %llu, %lld )", |
| ARG1, ARG2, (ULong)ARG3, LOHI64(ARG4,ARG5)); |
| PRE_REG_READ5(ssize_t, "pread64", |
| unsigned int, fd, char *, buf, vki_size_t, count, |
| vki_u32, offset_low32, vki_u32, offset_high32); |
| PRE_MEM_WRITE( "pread64(buf)", ARG2, ARG3 ); |
| } |
| |
| POST(sys_pread64) |
| { |
| if (RES > 0) { |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| } |
| |
| PRE(sys_mknod, 0) |
| { |
| PRINT("sys_mknod ( %p, 0x%x, 0x%x )", ARG1, ARG2, ARG3 ); |
| PRE_REG_READ3(long, "mknod", |
| const char *, pathname, int, mode, unsigned, dev); |
| PRE_MEM_RASCIIZ( "mknod(pathname)", ARG1 ); |
| } |
| |
| PRE(sys_flock, MayBlock) |
| { |
| PRINT("sys_flock ( %d, %d )", ARG1, ARG2 ); |
| PRE_REG_READ2(long, "flock", unsigned int, fd, unsigned int, operation); |
| } |
| |
| PRE(sys_init_module, MayBlock) |
| { |
| PRINT("sys_init_module ( %p, %llu, %p )", ARG1, (ULong)ARG2, ARG3 ); |
| PRE_REG_READ3(long, "init_module", |
| void *, umod, unsigned long, len, const char *, uargs); |
| PRE_MEM_READ( "init_module(umod)", ARG1, ARG2 ); |
| PRE_MEM_RASCIIZ( "init_module(uargs)", ARG3 ); |
| } |
| |
| PRE(sys_capget, 0) |
| { |
| PRINT("sys_capget ( %p, %p )", ARG1, ARG2 ); |
| PRE_REG_READ2(long, "capget", |
| vki_cap_user_header_t, header, vki_cap_user_data_t, data); |
| PRE_MEM_READ( "capget(header)", ARG1, |
| sizeof(struct __vki_user_cap_header_struct) ); |
| PRE_MEM_WRITE( "capget(data)", ARG2, |
| sizeof(struct __vki_user_cap_data_struct) ); |
| } |
| |
| POST(sys_capget) |
| { |
| if (ARG2 != (Addr)NULL) |
| POST_MEM_WRITE( ARG2, sizeof(struct __vki_user_cap_data_struct) ); |
| } |
| |
| PRE(sys_capset, 0) |
| { |
| PRINT("sys_capset ( %p, %p )", ARG1, ARG2 ); |
| PRE_REG_READ2(long, "capset", |
| vki_cap_user_header_t, header, |
| const vki_cap_user_data_t, data); |
| PRE_MEM_READ( "capset(header)", |
| ARG1, sizeof(struct __vki_user_cap_header_struct) ); |
| PRE_MEM_READ( "capset(data)", |
| ARG2, sizeof(struct __vki_user_cap_data_struct) ); |
| } |
| |
| // Pre_read a char** argument. |
| static void pre_argv_envp(Addr a, ThreadId tid, Char* s1, Char* s2) |
| { |
| while (True) { |
| Addr a_deref; |
| Addr* a_p = (Addr*)a; |
| PRE_MEM_READ( s1, (Addr)a_p, sizeof(Addr) ); |
| a_deref = *a_p; |
| if (0 == a_deref) |
| break; |
| PRE_MEM_RASCIIZ( s2, a_deref ); |
| a += sizeof(char*); |
| } |
| } |
| |
| // XXX: prototype here seemingly doesn't match the prototype for i386-linux, |
| // but it seems to work nonetheless... |
| PRE(sys_execve, Special) |
| { |
| Char *path; /* path to executable */ |
| |
| PRINT("sys_execve ( %p(%s), %p, %p )", ARG1, ARG1, ARG2, ARG3); |
| PRE_REG_READ3(vki_off_t, "execve", |
| char *, filename, char **, argv, char **, envp); |
| PRE_MEM_RASCIIZ( "execve(filename)", ARG1 ); |
| if (ARG2 != 0) |
| pre_argv_envp( ARG2, tid, "execve(argv)", "execve(argv[i])" ); |
| if (ARG3 != 0) |
| pre_argv_envp( ARG3, tid, "execve(envp)", "execve(envp[i])" ); |
| |
| path = (Char *)ARG1; |
| |
| /* Erk. If the exec fails, then the following will have made a |
| mess of things which makes it hard for us to continue. The |
| right thing to do is piece everything together again in |
| POST(execve), but that's hard work. Instead, we make an effort |
| to check that the execve will work before actually calling |
| exec. */ |
| { |
| struct vki_stat st; |
| Int ret = VG_(stat)((Char *)ARG1, &st); |
| |
| if (ret < 0) { |
| SET_RESULT( ret ); |
| return; |
| } |
| /* just look for regular file with any X bit set |
| XXX do proper permissions check? |
| */ |
| if ((st.st_mode & 0100111) == 0100000) { |
| SET_RESULT( -VKI_EACCES ); |
| return; |
| } |
| } |
| |
| /* Resistance is futile. Nuke all other threads. POSIX mandates |
| this. (Really, nuke them all, since the new process will make |
| its own new thread.) */ |
| VG_(master_tid) = tid; /* become the master */ |
| VG_(nuke_all_threads_except)( tid, VgSrc_ExitSyscall ); |
| VGA_(reap_threads)(tid); |
| |
| if (0) { |
| /* Shut down cleanly and report final state |
| XXX Is this reasonable? */ |
| tst->exitreason = VgSrc_ExitSyscall; |
| VG_(shutdown_actions)(tid); |
| } |
| |
| { |
| // Remove the valgrind-specific stuff from the environment so the |
| // child doesn't get vg_inject.so, vgpreload.so, etc. This is |
| // done unconditionally, since if we are tracing the child, |
| // stage1/2 will set up the appropriate client environment. |
| Char** envp = (Char**)ARG3; |
| |
| if (envp != NULL) { |
| VG_(env_remove_valgrind_env_stuff)( envp ); |
| } |
| } |
| |
| if (VG_(clo_trace_children)) { |
| Char* optvar = VG_(build_child_VALGRINDCLO)( (Char*)ARG1 ); |
| |
| // Set VALGRINDCLO and VALGRINDLIB in ARG3 (the environment) |
| VG_(env_setenv)( (Char***)&ARG3, VALGRINDCLO, optvar); |
| VG_(env_setenv)( (Char***)&ARG3, VALGRINDLIB, VG_(libdir)); |
| |
| // Create executable name: "/proc/self/fd/<vgexecfd>", update ARG1 |
| path = VG_(build_child_exename)(); |
| } |
| |
| if (0) { |
| Char **cpp; |
| |
| VG_(printf)("exec: %s\n", (Char *)ARG1); |
| for(cpp = (Char **)ARG2; cpp && *cpp; cpp++) |
| VG_(printf)("argv: %s\n", *cpp); |
| for(cpp = (Char **)ARG3; cpp && *cpp; cpp++) |
| VG_(printf)("env: %s\n", *cpp); |
| } |
| |
| /* restore the DATA rlimit for the child */ |
| VG_(setrlimit)(VKI_RLIMIT_DATA, &VG_(client_rlimit_data)); |
| |
| /* |
| Set the signal state up for exec. |
| |
| We need to set the real signal state to make sure the exec'd |
| process gets SIG_IGN properly. |
| |
| Also set our real sigmask to match the client's sigmask so that |
| the exec'd child will get the right mask. First we need to |
| clear out any pending signals so they they don't get delivered, |
| which would confuse things. |
| |
| XXX This is a bug - the signals should remain pending, and be |
| delivered to the new process after exec. There's also a |
| race-condition, since if someone delivers us a signal between |
| the sigprocmask and the execve, we'll still get the signal. Oh |
| well. |
| */ |
| { |
| vki_sigset_t allsigs; |
| vki_siginfo_t info; |
| static const struct vki_timespec zero = { 0, 0 }; |
| Int i; |
| |
| for(i = 1; i < VG_(max_signal); i++) { |
| struct vki_sigaction sa; |
| VG_(do_sys_sigaction)(i, NULL, &sa); |
| if (sa.ksa_handler == VKI_SIG_IGN) |
| VG_(sigaction)(i, &sa, NULL); |
| else { |
| sa.ksa_handler = VKI_SIG_DFL; |
| VG_(sigaction)(i, &sa, NULL); |
| } |
| } |
| |
| VG_(sigfillset)(&allsigs); |
| while(VG_(sigtimedwait)(&allsigs, &info, &zero) > 0) |
| ; |
| |
| VG_(sigprocmask)(VKI_SIG_SETMASK, &tst->sig_mask, NULL); |
| } |
| |
| SET_RESULT( VG_(do_syscall3)(__NR_execve, (UWord)path, ARG2, ARG3) ); |
| |
| /* If we got here, then the execve failed. We've already made too |
| much of a mess of ourselves to continue, so we have to abort. */ |
| VG_(message)(Vg_UserMsg, "execve(%p(%s), %p, %p) failed, errno %d", |
| ARG1, ARG1, ARG2, ARG3, -RES); |
| VG_(message)(Vg_UserMsg, "EXEC FAILED: I can't recover from " |
| "execve() failing, so I'm dying."); |
| VG_(message)(Vg_UserMsg, "Add more stringent tests in PRE(execve), " |
| "or work out how to recover."); |
| VG_(exit)(101); |
| } |
| |
| PRE(sys_access, 0) |
| { |
| PRINT("sys_access ( %p(%s), %d )", ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "access", const char *, pathname, int, mode); |
| PRE_MEM_RASCIIZ( "access(pathname)", ARG1 ); |
| } |
| |
| PRE(sys_alarm, 0) |
| { |
| PRINT("sys_alarm ( %d )", ARG1); |
| PRE_REG_READ1(unsigned long, "alarm", unsigned int, seconds); |
| } |
| |
| PRE(sys_brk, Special) |
| { |
| Addr brk_limit = VG_(brk_limit); |
| |
| /* libc says: int brk(void *end_data_segment); |
| kernel says: void* brk(void* end_data_segment); (more or less) |
| |
| libc returns 0 on success, and -1 (and sets errno) on failure. |
| Nb: if you ask to shrink the dataseg end below what it |
| currently is, that always succeeds, even if the dataseg end |
| doesn't actually change (eg. brk(0)). Unless it seg faults. |
| |
| Kernel returns the new dataseg end. If the brk() failed, this |
| will be unchanged from the old one. That's why calling (kernel) |
| brk(0) gives the current dataseg end (libc brk() just returns |
| zero in that case). |
| |
| Both will seg fault if you shrink it back into a text segment. |
| */ |
| PRINT("sys_brk ( %p )", ARG1); |
| PRE_REG_READ1(unsigned long, "brk", unsigned long, end_data_segment); |
| |
| SET_RESULT( do_brk(ARG1) ); |
| |
| if (RES == ARG1) { |
| /* brk() succeeded */ |
| if (RES < brk_limit) { |
| /* successfully shrunk the data segment. */ |
| VG_TRACK( die_mem_brk, (Addr)ARG1, |
| brk_limit-ARG1 ); |
| } else |
| if (RES > brk_limit) { |
| /* successfully grew the data segment */ |
| VG_TRACK( new_mem_brk, brk_limit, |
| ARG1-brk_limit ); |
| } |
| } else { |
| /* brk() failed */ |
| vg_assert(brk_limit == RES); |
| } |
| } |
| |
| PRE(sys_chdir, 0) |
| { |
| PRINT("sys_chdir ( %p )", ARG1); |
| PRE_REG_READ1(long, "chdir", const char *, path); |
| PRE_MEM_RASCIIZ( "chdir(path)", ARG1 ); |
| } |
| |
| PRE(sys_chmod, 0) |
| { |
| PRINT("sys_chmod ( %p, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "chmod", const char *, path, vki_mode_t, mode); |
| PRE_MEM_RASCIIZ( "chmod(path)", ARG1 ); |
| } |
| |
| PRE(sys_chown16, 0) |
| { |
| PRINT("sys_chown16 ( %p, 0x%x, 0x%x )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "chown16", |
| const char *, path, |
| vki_old_uid_t, owner, vki_old_gid_t, group); |
| PRE_MEM_RASCIIZ( "chown16(path)", ARG1 ); |
| } |
| |
| PRE(sys_chown, 0) |
| { |
| /* int chown(const char *path, uid_t owner, gid_t group); */ |
| PRINT("sys_chown ( %p, 0x%x, 0x%x )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "chown", |
| const char *, path, vki_uid_t, owner, vki_gid_t, group); |
| PRE_MEM_RASCIIZ( "chown(path)", ARG1 ); |
| } |
| |
| PRE(sys_lchown, 0) |
| { |
| PRINT("sys_lchown ( %p, 0x%x, 0x%x )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "lchown", |
| const char *, path, vki_uid_t, owner, vki_gid_t, group); |
| PRE_MEM_RASCIIZ( "lchown(path)", ARG1 ); |
| } |
| |
| PRE(sys_close, 0) |
| { |
| PRINT("sys_close ( %d )", ARG1); |
| PRE_REG_READ1(long, "close", unsigned int, fd); |
| |
| /* Detect and negate attempts by the client to close Valgrind's log fd */ |
| if (!VG_(fd_allowed)(ARG1, "close", tid, False)) |
| SET_RESULT( -VKI_EBADF ); |
| } |
| |
| POST(sys_close) |
| { |
| if (VG_(clo_track_fds)) record_fd_close(tid, ARG1); |
| } |
| |
| PRE(sys_dup, 0) |
| { |
| PRINT("sys_dup ( %d )", ARG1); |
| PRE_REG_READ1(long, "dup", unsigned int, oldfd); |
| } |
| |
| POST(sys_dup) |
| { |
| if (!VG_(fd_allowed)(RES, "dup", tid, True)) { |
| VG_(close)(RES); |
| SET_RESULT( -VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, RES, VG_(resolve_filename)(RES)); |
| } |
| } |
| |
| PRE(sys_dup2, 0) |
| { |
| PRINT("sys_dup2 ( %d, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "dup2", unsigned int, oldfd, unsigned int, newfd); |
| if (!VG_(fd_allowed)(ARG2, "dup2", tid, True)) |
| SET_RESULT( -VKI_EBADF ); |
| } |
| |
| POST(sys_dup2) |
| { |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, RES, VG_(resolve_filename)(RES)); |
| } |
| |
| PRE(sys_fchdir, 0) |
| { |
| PRINT("sys_fchdir ( %d )", ARG1); |
| PRE_REG_READ1(long, "fchdir", unsigned int, fd); |
| } |
| |
| PRE(sys_fchown16, 0) |
| { |
| PRINT("sys_fchown16 ( %d, %d, %d )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "fchown16", |
| unsigned int, fd, vki_old_uid_t, owner, vki_old_gid_t, group); |
| } |
| |
| PRE(sys_fchown, 0) |
| { |
| PRINT("sys_fchown ( %d, %d, %d )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "fchown", |
| unsigned int, fd, vki_uid_t, owner, vki_gid_t, group); |
| } |
| |
| PRE(sys_fchmod, 0) |
| { |
| PRINT("sys_fchmod ( %d, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "fchmod", unsigned int, fildes, vki_mode_t, mode); |
| } |
| |
| PRE(sys_fcntl, 0) |
| { |
| switch (ARG2) { |
| // These ones ignore ARG3. |
| case VKI_F_GETFD: |
| case VKI_F_GETFL: |
| case VKI_F_GETOWN: |
| case VKI_F_SETOWN: |
| case VKI_F_GETSIG: |
| case VKI_F_SETSIG: |
| case VKI_F_GETLEASE: |
| PRINT("sys_fcntl ( %d, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "fcntl", unsigned int, fd, unsigned int, cmd); |
| break; |
| |
| // These ones use ARG3 as "arg". |
| case VKI_F_DUPFD: |
| case VKI_F_SETFD: |
| case VKI_F_SETFL: |
| case VKI_F_SETLEASE: |
| case VKI_F_NOTIFY: |
| PRINT("sys_fcntl[ARG3=='arg'] ( %d, %d, %d )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "fcntl", |
| unsigned int, fd, unsigned int, cmd, unsigned long, arg); |
| break; |
| |
| // These ones use ARG3 as "lock". |
| case VKI_F_GETLK: |
| case VKI_F_SETLK: |
| case VKI_F_SETLKW: |
| #ifndef __amd64__ |
| case VKI_F_GETLK64: |
| case VKI_F_SETLK64: |
| case VKI_F_SETLKW64: |
| #else |
| #endif |
| PRINT("sys_fcntl[ARG3=='lock'] ( %d, %d, %p )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "fcntl", |
| unsigned int, fd, unsigned int, cmd, |
| struct flock64 *, lock); |
| break; |
| } |
| |
| //if (ARG2 == VKI_F_SETLKW) |
| // tst->sys_flags |= MayBlock; |
| } |
| |
| POST(sys_fcntl) |
| { |
| if (ARG2 == VKI_F_DUPFD) { |
| if (!VG_(fd_allowed)(RES, "fcntl(DUPFD)", tid, True)) { |
| VG_(close)(RES); |
| SET_RESULT( -VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, RES, VG_(resolve_filename)(RES)); |
| } |
| } |
| } |
| |
| // XXX: wrapper only suitable for 32-bit systems |
| PRE(sys_fcntl64, 0) |
| { |
| switch (ARG2) { |
| // These ones ignore ARG3. |
| case VKI_F_GETFD: |
| case VKI_F_GETFL: |
| case VKI_F_GETOWN: |
| case VKI_F_SETOWN: |
| case VKI_F_GETSIG: |
| case VKI_F_SETSIG: |
| case VKI_F_GETLEASE: |
| PRINT("sys_fcntl64 ( %d, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "fcntl64", unsigned int, fd, unsigned int, cmd); |
| break; |
| |
| // These ones use ARG3 as "arg". |
| case VKI_F_DUPFD: |
| case VKI_F_SETFD: |
| case VKI_F_SETFL: |
| case VKI_F_SETLEASE: |
| case VKI_F_NOTIFY: |
| PRINT("sys_fcntl64[ARG3=='arg'] ( %d, %d, %d )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "fcntl64", |
| unsigned int, fd, unsigned int, cmd, unsigned long, arg); |
| break; |
| |
| // These ones use ARG3 as "lock". |
| case VKI_F_GETLK: |
| case VKI_F_SETLK: |
| case VKI_F_SETLKW: |
| #ifndef __amd64__ |
| case VKI_F_GETLK64: |
| case VKI_F_SETLK64: |
| case VKI_F_SETLKW64: |
| #endif |
| PRINT("sys_fcntl64[ARG3=='lock'] ( %d, %d, %p )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "fcntl64", |
| unsigned int, fd, unsigned int, cmd, |
| struct flock64 *, lock); |
| break; |
| } |
| |
| #ifndef __amd64__ |
| //if (ARG2 == VKI_F_SETLKW || ARG2 == VKI_F_SETLKW64) |
| // tst->sys_flags |= MayBlock; |
| #else |
| //if (ARG2 == VKI_F_SETLKW) |
| // tst->sys_flags |= MayBlock; |
| #endif |
| } |
| |
| POST(sys_fcntl64) |
| { |
| if (ARG2 == VKI_F_DUPFD) { |
| if (!VG_(fd_allowed)(RES, "fcntl64(DUPFD)", tid, True)) { |
| VG_(close)(RES); |
| SET_RESULT( -VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, RES, VG_(resolve_filename)(RES)); |
| } |
| } |
| } |
| |
| PRE(sys_newfstat, 0) |
| { |
| PRINT("sys_newfstat ( %d, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "fstat", unsigned int, fd, struct stat *, buf); |
| PRE_MEM_WRITE( "fstat(buf)", ARG2, sizeof(struct vki_stat) ); |
| } |
| |
| POST(sys_newfstat) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_stat) ); |
| } |
| |
| static vki_sigset_t fork_saved_mask; |
| |
| // In Linux, the sys_fork() function varies across architectures, but we |
| // ignore the various args it gets, and so it looks arch-neutral. Hmm. |
| PRE(sys_fork, 0) |
| { |
| vki_sigset_t mask; |
| |
| PRINT("sys_fork ( )"); |
| PRE_REG_READ0(long, "fork"); |
| |
| /* Block all signals during fork, so that we can fix things up in |
| the child without being interrupted. */ |
| VG_(sigfillset)(&mask); |
| VG_(sigprocmask)(VKI_SIG_SETMASK, &mask, &fork_saved_mask); |
| |
| VG_(do_atfork_pre)(tid); |
| |
| SET_RESULT(VG_(do_syscall0)(__NR_fork)); |
| |
| if (RES == 0) { |
| VG_(do_atfork_child)(tid); |
| |
| /* restore signal mask */ |
| VG_(sigprocmask)(VKI_SIG_SETMASK, &fork_saved_mask, NULL); |
| } else if (RES > 0) { |
| PRINT(" fork: process %d created child %d\n", VG_(getpid)(), RES); |
| |
| VG_(do_atfork_parent)(tid); |
| |
| /* restore signal mask */ |
| VG_(sigprocmask)(VKI_SIG_SETMASK, &fork_saved_mask, NULL); |
| } |
| } |
| |
| PRE(sys_ftruncate, MayBlock) |
| { |
| PRINT("sys_ftruncate ( %d, %lld )", ARG1,(ULong)ARG2); |
| PRE_REG_READ2(long, "ftruncate", unsigned int, fd, unsigned long, length); |
| } |
| |
| PRE(sys_truncate, MayBlock) |
| { |
| PRINT("sys_truncate ( %p(%s), %d )", ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "truncate", |
| const char *, path, unsigned long, length); |
| PRE_MEM_RASCIIZ( "truncate(path)", ARG1 ); |
| } |
| |
| // XXX: this wrapper is only suitable for 32-bit platforms |
| PRE(sys_ftruncate64, MayBlock) |
| { |
| PRINT("sys_ftruncate64 ( %d, %lld )", ARG1, LOHI64(ARG2,ARG3)); |
| PRE_REG_READ3(long, "ftruncate64", |
| unsigned int, fd, |
| vki_u32, length_low32, vki_u32, length_high32); |
| } |
| |
| // XXX: this wrapper is only suitable for 32-bit platforms |
| PRE(sys_truncate64, MayBlock) |
| { |
| PRINT("sys_truncate64 ( %p, %lld )", ARG1, LOHI64(ARG2, ARG3)); |
| PRE_REG_READ3(long, "truncate64", |
| const char *, path, |
| vki_u32, length_low32, vki_u32, length_high32); |
| PRE_MEM_RASCIIZ( "truncate64(path)", ARG1 ); |
| } |
| |
| |
| PRE(sys_getdents, MayBlock) |
| { |
| PRINT("sys_getdents ( %d, %p, %d )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "getdents", |
| unsigned int, fd, struct linux_dirent *, dirp, |
| unsigned int, count); |
| PRE_MEM_WRITE( "getdents(dirp)", ARG2, ARG3 ); |
| } |
| |
| POST(sys_getdents) |
| { |
| if (RES > 0) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_getdents64, MayBlock) |
| { |
| PRINT("sys_getdents64 ( %d, %p, %d )",ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "getdents64", |
| unsigned int, fd, struct linux_dirent64 *, dirp, |
| unsigned int, count); |
| PRE_MEM_WRITE( "getdents64(dirp)", ARG2, ARG3 ); |
| } |
| |
| POST(sys_getdents64) |
| { |
| if (RES > 0) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_getgroups16, 0) |
| { |
| PRINT("sys_getgroups16 ( %d, %p )", ARG1, ARG2); |
| PRE_REG_READ2(long, "getgroups16", int, size, vki_old_gid_t *, list); |
| if (ARG1 > 0) |
| PRE_MEM_WRITE( "getgroups16(list)", ARG2, ARG1 * sizeof(vki_old_gid_t) ); |
| } |
| |
| POST(sys_getgroups16) |
| { |
| if (ARG1 > 0 && RES > 0) |
| POST_MEM_WRITE( ARG2, RES * sizeof(vki_old_gid_t) ); |
| } |
| |
| PRE(sys_getgroups, 0) |
| { |
| PRINT("sys_getgroups ( %d, %p )", ARG1, ARG2); |
| PRE_REG_READ2(long, "getgroups", int, size, vki_gid_t *, list); |
| if (ARG1 > 0) |
| PRE_MEM_WRITE( "getgroups(list)", ARG2, ARG1 * sizeof(vki_gid_t) ); |
| } |
| |
| POST(sys_getgroups) |
| { |
| if (ARG1 > 0 && RES > 0) |
| POST_MEM_WRITE( ARG2, RES * sizeof(vki_gid_t) ); |
| } |
| |
| PRE(sys_getcwd, 0) |
| { |
| // Note that the kernel version of getcwd() behaves quite differently to |
| // the glibc one. |
| PRINT("sys_getcwd ( %p, %llu )", ARG1,(ULong)ARG2); |
| PRE_REG_READ2(long, "getcwd", char *, buf, unsigned long, size); |
| PRE_MEM_WRITE( "getcwd(buf)", ARG1, ARG2 ); |
| } |
| |
| POST(sys_getcwd) |
| { |
| if (RES != (Addr)NULL) |
| POST_MEM_WRITE( ARG1, RES ); |
| } |
| |
| PRE(sys_geteuid16, 0) |
| { |
| PRINT("sys_geteuid16 ( )"); |
| PRE_REG_READ0(long, "geteuid16"); |
| } |
| |
| PRE(sys_geteuid, 0) |
| { |
| PRINT("sys_geteuid ( )"); |
| PRE_REG_READ0(long, "geteuid"); |
| } |
| |
| PRE(sys_getegid16, 0) |
| { |
| PRINT("sys_getegid16 ( )"); |
| PRE_REG_READ0(long, "getegid16"); |
| } |
| |
| PRE(sys_getegid, 0) |
| { |
| PRINT("sys_getegid ( )"); |
| PRE_REG_READ0(long, "getegid"); |
| } |
| |
| PRE(sys_getgid16, 0) |
| { |
| PRINT("sys_getgid16 ( )"); |
| PRE_REG_READ0(long, "getgid16"); |
| } |
| |
| PRE(sys_getgid, 0) |
| { |
| PRINT("sys_getgid ( )"); |
| PRE_REG_READ0(long, "getgid"); |
| } |
| |
| PRE(sys_getpid, 0) |
| { |
| PRINT("sys_getpid ()"); |
| PRE_REG_READ0(long, "getpid"); |
| } |
| |
| PRE(sys_getpgid, 0) |
| { |
| PRINT("sys_getpgid ( %d )", ARG1); |
| PRE_REG_READ1(long, "getpgid", vki_pid_t, pid); |
| } |
| |
| PRE(sys_getpgrp, 0) |
| { |
| PRINT("sys_getpgrp ()"); |
| PRE_REG_READ0(long, "getpgrp"); |
| } |
| |
| PRE(sys_getppid, 0) |
| { |
| PRINT("sys_getppid ()"); |
| PRE_REG_READ0(long, "getppid"); |
| } |
| |
| POST(sys_getppid) |
| { |
| /* If the master thread has already exited, and it is this thread's |
| parent, then force getppid to return 1 (init) rather than the |
| real ppid, so that it thinks its parent has exited. */ |
| if (VG_(threads)[VG_(master_tid)].os_state.lwpid == RES && |
| VG_(is_exiting)(VG_(master_tid))) |
| RES = 1; |
| } |
| |
| static void common_post_getrlimit(ThreadId tid, UWord a1, UWord a2) |
| { |
| POST_MEM_WRITE( a2, sizeof(struct vki_rlimit) ); |
| |
| switch (a1) { |
| case VKI_RLIMIT_NOFILE: |
| ((struct vki_rlimit *)a2)->rlim_cur = VG_(fd_soft_limit); |
| ((struct vki_rlimit *)a2)->rlim_max = VG_(fd_hard_limit); |
| break; |
| |
| case VKI_RLIMIT_DATA: |
| *((struct vki_rlimit *)a2) = VG_(client_rlimit_data); |
| break; |
| |
| case VKI_RLIMIT_STACK: |
| *((struct vki_rlimit *)a2) = VG_(client_rlimit_stack); |
| break; |
| } |
| } |
| |
| PRE(sys_old_getrlimit, 0) |
| { |
| PRINT("sys_old_getrlimit ( %d, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "old_getrlimit", |
| unsigned int, resource, struct rlimit *, rlim); |
| PRE_MEM_WRITE( "old_getrlimit(rlim)", ARG2, sizeof(struct vki_rlimit) ); |
| } |
| |
| POST(sys_old_getrlimit) |
| { |
| common_post_getrlimit(tid, ARG1, ARG2); |
| } |
| |
| PRE(sys_getrlimit, 0) |
| { |
| PRINT("sys_getrlimit ( %d, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "getrlimit", |
| unsigned int, resource, struct rlimit *, rlim); |
| PRE_MEM_WRITE( "getrlimit(rlim)", ARG2, sizeof(struct vki_rlimit) ); |
| } |
| |
| POST(sys_getrlimit) |
| { |
| common_post_getrlimit(tid, ARG1, ARG2); |
| } |
| |
| PRE(sys_getrusage, 0) |
| { |
| /* int getrusage (int who, struct rusage *usage); */ |
| PRINT("sys_getrusage ( %d, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "getrusage", int, who, struct rusage *, usage); |
| PRE_MEM_WRITE( "getrusage(usage)", ARG2, sizeof(struct vki_rusage) ); |
| } |
| |
| POST(sys_getrusage) |
| { |
| if (RES == 0) |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_rusage) ); |
| } |
| |
| PRE(sys_gettimeofday, 0) |
| { |
| PRINT("sys_gettimeofday ( %p, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "gettimeofday", |
| struct timeval *, tv, struct timezone *, tz); |
| PRE_MEM_WRITE( "gettimeofday(tv)", ARG1, sizeof(struct vki_timeval) ); |
| if (ARG2 != 0) |
| PRE_MEM_WRITE( "gettimeofday(tz)", ARG2, sizeof(struct vki_timezone) ); |
| } |
| |
| POST(sys_gettimeofday) |
| { |
| if (RES == 0) { |
| POST_MEM_WRITE( ARG1, sizeof(struct vki_timeval) ); |
| if (ARG2 != 0) |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_timezone) ); |
| } |
| } |
| |
| PRE(sys_settimeofday, 0) |
| { |
| PRINT("sys_settimeofday ( %p, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "settimeofday", |
| struct timeval *, tv, struct timezone *, tz); |
| PRE_MEM_READ( "settimeofday(tv)", ARG1, sizeof(struct vki_timeval) ); |
| if (ARG2 != 0) { |
| PRE_MEM_READ( "settimeofday(tz)", ARG2, sizeof(struct vki_timezone) ); |
| /* maybe should warn if tz->tz_dsttime is non-zero? */ |
| } |
| } |
| |
| PRE(sys_getuid16, 0) |
| { |
| PRINT("sys_getuid16 ( )"); |
| PRE_REG_READ0(long, "getuid16"); |
| } |
| |
| PRE(sys_getuid, 0) |
| { |
| PRINT("sys_getuid ( )"); |
| PRE_REG_READ0(long, "getuid"); |
| } |
| |
| // XXX: I reckon some of these cases must be x86-specific |
| PRE(sys_ioctl, MayBlock) |
| { |
| PRINT("sys_ioctl ( %d, 0x%x, %p )",ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "ioctl", |
| unsigned int, fd, unsigned int, request, unsigned long, arg); |
| |
| switch (ARG2 /* request */) { |
| case VKI_TCSETS: |
| case VKI_TCSETSW: |
| case VKI_TCSETSF: |
| PRE_MEM_READ( "ioctl(TCSET{S,SW,SF})", ARG3, sizeof(struct vki_termios) ); |
| break; |
| case VKI_TCGETS: |
| PRE_MEM_WRITE( "ioctl(TCGETS)", ARG3, sizeof(struct vki_termios) ); |
| break; |
| case VKI_TCSETA: |
| case VKI_TCSETAW: |
| case VKI_TCSETAF: |
| PRE_MEM_READ( "ioctl(TCSET{A,AW,AF})", ARG3, sizeof(struct vki_termio) ); |
| break; |
| case VKI_TCGETA: |
| PRE_MEM_WRITE( "ioctl(TCGETA)", ARG3, sizeof(struct vki_termio) ); |
| break; |
| case VKI_TCSBRK: |
| case VKI_TCXONC: |
| case VKI_TCSBRKP: |
| case VKI_TCFLSH: |
| /* These just take an int by value */ |
| break; |
| case VKI_TIOCGWINSZ: |
| PRE_MEM_WRITE( "ioctl(TIOCGWINSZ)", ARG3, sizeof(struct vki_winsize) ); |
| break; |
| case VKI_TIOCSWINSZ: |
| PRE_MEM_READ( "ioctl(TIOCSWINSZ)", ARG3, sizeof(struct vki_winsize) ); |
| break; |
| case VKI_TIOCMBIS: |
| PRE_MEM_READ( "ioctl(TIOCMBIS)", ARG3, sizeof(unsigned int) ); |
| break; |
| case VKI_TIOCMBIC: |
| PRE_MEM_READ( "ioctl(TIOCMBIC)", ARG3, sizeof(unsigned int) ); |
| break; |
| case VKI_TIOCMSET: |
| PRE_MEM_READ( "ioctl(TIOCMSET)", ARG3, sizeof(unsigned int) ); |
| break; |
| case VKI_TIOCLINUX: |
| PRE_MEM_READ( "ioctl(TIOCLINUX)", ARG3, sizeof(char *) ); |
| if (*(char *)ARG3 == 11) { |
| PRE_MEM_READ( "ioctl(TIOCLINUX, 11)", ARG3, 2 * sizeof(char *) ); |
| } |
| break; |
| case VKI_TIOCGPGRP: |
| /* Get process group ID for foreground processing group. */ |
| PRE_MEM_WRITE( "ioctl(TIOCGPGRP)", ARG3, sizeof(vki_pid_t) ); |
| break; |
| case VKI_TIOCSPGRP: |
| /* Set a process group ID? */ |
| PRE_MEM_WRITE( "ioctl(TIOCGPGRP)", ARG3, sizeof(vki_pid_t) ); |
| break; |
| case VKI_TIOCGPTN: /* Get Pty Number (of pty-mux device) */ |
| PRE_MEM_WRITE( "ioctl(TIOCGPTN)", ARG3, sizeof(int) ); |
| break; |
| case VKI_TIOCSCTTY: |
| /* Just takes an int value. */ |
| break; |
| case VKI_TIOCSPTLCK: /* Lock/unlock Pty */ |
| PRE_MEM_READ( "ioctl(TIOCSPTLCK)", ARG3, sizeof(int) ); |
| break; |
| case VKI_FIONBIO: |
| PRE_MEM_READ( "ioctl(FIONBIO)", ARG3, sizeof(int) ); |
| break; |
| case VKI_FIOASYNC: |
| PRE_MEM_READ( "ioctl(FIOASYNC)", ARG3, sizeof(int) ); |
| break; |
| case VKI_FIONREAD: /* identical to SIOCINQ */ |
| PRE_MEM_WRITE( "ioctl(FIONREAD)", ARG3, sizeof(int) ); |
| break; |
| |
| case VKI_SG_SET_COMMAND_Q: |
| PRE_MEM_READ( "ioctl(SG_SET_COMMAND_Q)", ARG3, sizeof(int) ); |
| break; |
| case VKI_SG_IO: |
| PRE_MEM_WRITE( "ioctl(SG_IO)", ARG3, sizeof(vki_sg_io_hdr_t) ); |
| break; |
| case VKI_SG_GET_SCSI_ID: |
| PRE_MEM_WRITE( "ioctl(SG_GET_SCSI_ID)", ARG3, sizeof(vki_sg_scsi_id_t) ); |
| break; |
| case VKI_SG_SET_RESERVED_SIZE: |
| PRE_MEM_READ( "ioctl(SG_SET_RESERVED_SIZE)", ARG3, sizeof(int) ); |
| break; |
| case VKI_SG_SET_TIMEOUT: |
| PRE_MEM_READ( "ioctl(SG_SET_TIMEOUT)", ARG3, sizeof(int) ); |
| break; |
| case VKI_SG_GET_RESERVED_SIZE: |
| PRE_MEM_WRITE( "ioctl(SG_GET_RESERVED_SIZE)", ARG3, sizeof(int) ); |
| break; |
| case VKI_SG_GET_TIMEOUT: |
| PRE_MEM_WRITE( "ioctl(SG_GET_TIMEOUT)", ARG3, sizeof(int) ); |
| break; |
| case VKI_SG_GET_VERSION_NUM: |
| PRE_MEM_READ( "ioctl(SG_GET_VERSION_NUM)", ARG3, sizeof(int) ); |
| break; |
| case VKI_SG_EMULATED_HOST: /* 0x2203 */ |
| PRE_MEM_WRITE( "ioctl(SG_EMULATED_HOST)", ARG3, sizeof(int) ); |
| break; |
| case VKI_SG_GET_SG_TABLESIZE: /* 0x227f */ |
| PRE_MEM_WRITE( "ioctl(SG_GET_SG_TABLESIZE)", ARG3, sizeof(int) ); |
| break; |
| |
| case VKI_IIOCGETCPS: |
| PRE_MEM_WRITE( "ioctl(IIOCGETCPS)", ARG3, |
| VKI_ISDN_MAX_CHANNELS * 2 * sizeof(unsigned long) ); |
| break; |
| case VKI_IIOCNETGPN: |
| PRE_MEM_READ( "ioctl(IIOCNETGPN)", |
| (Addr)&((vki_isdn_net_ioctl_phone *)ARG3)->name, |
| sizeof(((vki_isdn_net_ioctl_phone *)ARG3)->name) ); |
| PRE_MEM_WRITE( "ioctl(IIOCNETGPN)", ARG3, |
| sizeof(vki_isdn_net_ioctl_phone) ); |
| break; |
| |
| /* These all use struct ifreq AFAIK */ |
| case VKI_SIOCGIFINDEX: /* get iface index */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFINDEX)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFINDEX)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFFLAGS: /* get flags */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFFLAGS)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFFLAGS)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFHWADDR: /* Get hardware address */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFHWADDR)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFHWADDR)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFMTU: /* get MTU size */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFMTU)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFMTU)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFADDR: /* get PA address */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFADDR)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFADDR)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFNETMASK: /* get network PA mask */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFNETMASK)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFNETMASK)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFMETRIC: /* get metric */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFMETRIC)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFMETRIC)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFMAP: /* Get device parameters */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFMAP)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFMAP)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFTXQLEN: /* Get the tx queue length */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFTXQLEN)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFTXQLEN)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFDSTADDR: /* get remote PA address */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFDSTADDR)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFDSTADDR)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFBRDADDR: /* get broadcast PA address */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFBRDADDR)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFBRDADDR)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFNAME: /* get iface name */ |
| PRE_MEM_READ( "ioctl(SIOCGIFNAME)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_ifindex, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_ifindex) ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFNAME)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGMIIPHY: /* get hardware entry */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFMIIPHY)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFMIIPHY)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGMIIREG: /* get hardware entry registers */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCGIFMIIREG)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCGIFMIIREG)", |
| (Addr)&((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->phy_id, |
| sizeof(((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->phy_id) ); |
| PRE_MEM_READ( "ioctl(SIOCGIFMIIREG)", |
| (Addr)&((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->reg_num, |
| sizeof(((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->reg_num) ); |
| PRE_MEM_WRITE( "ioctl(SIOCGIFMIIREG)", ARG3, |
| sizeof(struct vki_ifreq)); |
| break; |
| case VKI_SIOCGIFCONF: /* get iface list */ |
| /* WAS: |
| PRE_MEM_WRITE( "ioctl(SIOCGIFCONF)", ARG3, sizeof(struct ifconf)); |
| KERNEL_DO_SYSCALL(tid,RES); |
| if (!VG_(is_kerror)(RES) && RES == 0) |
| POST_MEM_WRITE(ARG3, sizeof(struct ifconf)); |
| */ |
| PRE_MEM_READ( "ioctl(SIOCGIFCONF)", ARG3, sizeof(struct vki_ifconf)); |
| if ( ARG3 ) { |
| // TODO len must be readable and writable |
| // buf pointer only needs to be readable |
| struct vki_ifconf *ifc = (struct vki_ifconf *) ARG3; |
| PRE_MEM_WRITE( "ioctl(SIOCGIFCONF).ifc_buf", |
| (Addr)(ifc->vki_ifc_buf), ifc->ifc_len ); |
| } |
| break; |
| case VKI_SIOCGSTAMP: |
| PRE_MEM_WRITE( "ioctl(SIOCGSTAMP)", ARG3, sizeof(struct vki_timeval)); |
| break; |
| /* SIOCOUTQ is an ioctl that, when called on a socket, returns |
| the number of bytes currently in that socket's send buffer. |
| It writes this value as an int to the memory location |
| indicated by the third argument of ioctl(2). */ |
| case VKI_SIOCOUTQ: |
| PRE_MEM_WRITE( "ioctl(SIOCOUTQ)", ARG3, sizeof(int)); |
| break; |
| case VKI_SIOCGRARP: /* get RARP table entry */ |
| case VKI_SIOCGARP: /* get ARP table entry */ |
| PRE_MEM_WRITE( "ioctl(SIOCGARP)", ARG3, sizeof(struct vki_arpreq)); |
| break; |
| |
| case VKI_SIOCSIFFLAGS: /* set flags */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCSIFFLAGS)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCSIFFLAGS)", |
| (Addr)&((struct vki_ifreq *)ARG3)->vki_ifr_flags, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_flags) ); |
| break; |
| case VKI_SIOCSIFMAP: /* Set device parameters */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCSIFMAP)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCSIFMAP)", |
| (Addr)&((struct vki_ifreq *)ARG3)->ifr_map, |
| sizeof(((struct vki_ifreq *)ARG3)->ifr_map) ); |
| break; |
| case VKI_SIOCSIFTXQLEN: /* Set the tx queue length */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCSIFTXQLEN)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCSIFTXQLEN)", |
| (Addr)&((struct vki_ifreq *)ARG3)->ifr_qlen, |
| sizeof(((struct vki_ifreq *)ARG3)->ifr_qlen) ); |
| break; |
| case VKI_SIOCSIFADDR: /* set PA address */ |
| case VKI_SIOCSIFDSTADDR: /* set remote PA address */ |
| case VKI_SIOCSIFBRDADDR: /* set broadcast PA address */ |
| case VKI_SIOCSIFNETMASK: /* set network PA mask */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCSIF*ADDR)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCSIF*ADDR)", |
| (Addr)&((struct vki_ifreq *)ARG3)->ifr_addr, |
| sizeof(((struct vki_ifreq *)ARG3)->ifr_addr) ); |
| break; |
| case VKI_SIOCSIFMETRIC: /* set metric */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCSIFMETRIC)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCSIFMETRIC)", |
| (Addr)&((struct vki_ifreq *)ARG3)->vki_ifr_metric, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_metric) ); |
| break; |
| case VKI_SIOCSIFMTU: /* set MTU size */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCSIFMTU)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCSIFMTU)", |
| (Addr)&((struct vki_ifreq *)ARG3)->vki_ifr_mtu, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_mtu) ); |
| break; |
| case VKI_SIOCSIFHWADDR: /* set hardware address */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCSIFHWADDR)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCSIFHWADDR)", |
| (Addr)&((struct vki_ifreq *)ARG3)->ifr_hwaddr, |
| sizeof(((struct vki_ifreq *)ARG3)->ifr_hwaddr) ); |
| break; |
| case VKI_SIOCSMIIREG: /* set hardware entry registers */ |
| PRE_MEM_RASCIIZ( "ioctl(SIOCSMIIREG)", |
| (Addr)((struct vki_ifreq *)ARG3)->vki_ifr_name ); |
| PRE_MEM_READ( "ioctl(SIOCSMIIREG)", |
| (Addr)&((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->phy_id, |
| sizeof(((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->phy_id) ); |
| PRE_MEM_READ( "ioctl(SIOCSMIIREG)", |
| (Addr)&((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->reg_num, |
| sizeof(((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->reg_num) ); |
| PRE_MEM_READ( "ioctl(SIOCSMIIREG)", |
| (Addr)&((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->val_in, |
| sizeof(((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->val_in) ); |
| break; |
| /* Routing table calls. */ |
| case VKI_SIOCADDRT: /* add routing table entry */ |
| case VKI_SIOCDELRT: /* delete routing table entry */ |
| PRE_MEM_READ( "ioctl(SIOCADDRT/DELRT)", ARG3, |
| sizeof(struct vki_rtentry)); |
| break; |
| |
| /* RARP cache control calls. */ |
| case VKI_SIOCDRARP: /* delete RARP table entry */ |
| case VKI_SIOCSRARP: /* set RARP table entry */ |
| /* ARP cache control calls. */ |
| case VKI_SIOCSARP: /* set ARP table entry */ |
| case VKI_SIOCDARP: /* delete ARP table entry */ |
| PRE_MEM_READ( "ioctl(SIOCSIFFLAGS)", ARG3, sizeof(struct vki_ifreq)); |
| break; |
| |
| case VKI_SIOCGPGRP: |
| PRE_MEM_WRITE( "ioctl(SIOCGPGRP)", ARG3, sizeof(int) ); |
| break; |
| case VKI_SIOCSPGRP: |
| PRE_MEM_READ( "ioctl(SIOCSPGRP)", ARG3, sizeof(int) ); |
| //tst->sys_flags &= ~MayBlock; |
| break; |
| |
| /* linux/soundcard interface (OSS) */ |
| case VKI_SNDCTL_SEQ_GETOUTCOUNT: |
| case VKI_SNDCTL_SEQ_GETINCOUNT: |
| case VKI_SNDCTL_SEQ_PERCMODE: |
| case VKI_SNDCTL_SEQ_TESTMIDI: |
| case VKI_SNDCTL_SEQ_RESETSAMPLES: |
| case VKI_SNDCTL_SEQ_NRSYNTHS: |
| case VKI_SNDCTL_SEQ_NRMIDIS: |
| case VKI_SNDCTL_SEQ_GETTIME: |
| case VKI_SNDCTL_DSP_GETFMTS: |
| case VKI_SNDCTL_DSP_GETTRIGGER: |
| case VKI_SNDCTL_DSP_GETODELAY: |
| case VKI_SNDCTL_DSP_GETSPDIF: |
| case VKI_SNDCTL_DSP_GETCAPS: |
| case VKI_SOUND_PCM_READ_RATE: |
| case VKI_SOUND_PCM_READ_CHANNELS: |
| case VKI_SOUND_PCM_READ_BITS: |
| case (VKI_SOUND_PCM_READ_BITS|0x40000000): /* what the fuck ? */ |
| case VKI_SOUND_PCM_READ_FILTER: |
| PRE_MEM_WRITE( "ioctl(SNDCTL_XXX|SOUND_XXX (SIOR, int))", |
| ARG3, sizeof(int)); |
| break; |
| case VKI_SNDCTL_SEQ_CTRLRATE: |
| case VKI_SNDCTL_DSP_SPEED: |
| case VKI_SNDCTL_DSP_STEREO: |
| case VKI_SNDCTL_DSP_GETBLKSIZE: |
| case VKI_SNDCTL_DSP_CHANNELS: |
| case VKI_SOUND_PCM_WRITE_FILTER: |
| case VKI_SNDCTL_DSP_SUBDIVIDE: |
| case VKI_SNDCTL_DSP_SETFRAGMENT: |
| case VKI_SNDCTL_DSP_GETCHANNELMASK: |
| case VKI_SNDCTL_DSP_BIND_CHANNEL: |
| case VKI_SNDCTL_TMR_TIMEBASE: |
| case VKI_SNDCTL_TMR_TEMPO: |
| case VKI_SNDCTL_TMR_SOURCE: |
| case VKI_SNDCTL_MIDI_PRETIME: |
| case VKI_SNDCTL_MIDI_MPUMODE: |
| PRE_MEM_READ( "ioctl(SNDCTL_XXX|SOUND_XXX (SIOWR, int))", |
| ARG3, sizeof(int)); |
| PRE_MEM_WRITE( "ioctl(SNDCTL_XXX|SOUND_XXX (SIOWR, int))", |
| ARG3, sizeof(int)); |
| break; |
| case VKI_SNDCTL_DSP_GETOSPACE: |
| case VKI_SNDCTL_DSP_GETISPACE: |
| PRE_MEM_WRITE( "ioctl(SNDCTL_XXX|SOUND_XXX (SIOR, audio_buf_info))", |
| ARG3, sizeof(vki_audio_buf_info)); |
| break; |
| case VKI_SNDCTL_DSP_SETTRIGGER: |
| PRE_MEM_READ( "ioctl(SNDCTL_XXX|SOUND_XXX (SIOW, int))", |
| ARG3, sizeof(int)); |
| break; |
| |
| case VKI_SNDCTL_DSP_POST: |
| case VKI_SNDCTL_DSP_RESET: |
| case VKI_SNDCTL_DSP_SYNC: |
| case VKI_SNDCTL_DSP_SETSYNCRO: |
| case VKI_SNDCTL_DSP_SETDUPLEX: |
| break; |
| |
| /* Real Time Clock (/dev/rtc) ioctls */ |
| case VKI_RTC_UIE_ON: |
| case VKI_RTC_UIE_OFF: |
| case VKI_RTC_AIE_ON: |
| case VKI_RTC_AIE_OFF: |
| case VKI_RTC_PIE_ON: |
| case VKI_RTC_PIE_OFF: |
| case VKI_RTC_IRQP_SET: |
| break; |
| case VKI_RTC_RD_TIME: |
| case VKI_RTC_ALM_READ: |
| PRE_MEM_WRITE( "ioctl(RTC_RD_TIME/ALM_READ)", |
| ARG3, sizeof(struct vki_rtc_time)); |
| break; |
| case VKI_RTC_ALM_SET: |
| PRE_MEM_READ( "ioctl(RTC_ALM_SET)", ARG3, sizeof(struct vki_rtc_time)); |
| break; |
| case VKI_RTC_IRQP_READ: |
| PRE_MEM_WRITE( "ioctl(RTC_IRQP_READ)", ARG3, sizeof(unsigned long)); |
| break; |
| |
| case VKI_BLKGETSIZE: |
| PRE_MEM_WRITE( "ioctl(BLKGETSIZE)", ARG3, sizeof(unsigned long)); |
| break; |
| |
| /* Hard disks */ |
| case VKI_HDIO_GET_IDENTITY: /* 0x030d */ |
| PRE_MEM_WRITE( "ioctl(HDIO_GET_IDENTITY)", ARG3, |
| VKI_SIZEOF_STRUCT_HD_DRIVEID ); |
| break; |
| |
| /* CD ROM stuff (??) */ |
| case VKI_CDROM_GET_MCN: |
| PRE_MEM_READ( "ioctl(CDROM_GET_MCN)", ARG3, |
| sizeof(struct vki_cdrom_mcn) ); |
| break; |
| case VKI_CDROM_SEND_PACKET: |
| PRE_MEM_READ( "ioctl(CDROM_SEND_PACKET)", ARG3, |
| sizeof(struct vki_cdrom_generic_command)); |
| break; |
| case VKI_CDROMSUBCHNL: |
| PRE_MEM_READ( "ioctl(CDROMSUBCHNL (cdsc_format, char))", |
| (Addr) &(((struct vki_cdrom_subchnl*) ARG3)->cdsc_format), |
| sizeof(((struct vki_cdrom_subchnl*) ARG3)->cdsc_format)); |
| PRE_MEM_WRITE( "ioctl(CDROMSUBCHNL)", ARG3, |
| sizeof(struct vki_cdrom_subchnl)); |
| break; |
| case VKI_CDROMREADMODE2: |
| PRE_MEM_READ( "ioctl(CDROMREADMODE2)", ARG3, VKI_CD_FRAMESIZE_RAW0 ); |
| break; |
| case VKI_CDROMREADTOCHDR: |
| PRE_MEM_WRITE( "ioctl(CDROMREADTOCHDR)", ARG3, |
| sizeof(struct vki_cdrom_tochdr)); |
| break; |
| case VKI_CDROMREADTOCENTRY: |
| PRE_MEM_READ( "ioctl(CDROMREADTOCENTRY (cdte_format, char))", |
| (Addr) &(((struct vki_cdrom_tocentry*) ARG3)->cdte_format), |
| sizeof(((struct vki_cdrom_tocentry*) ARG3)->cdte_format)); |
| PRE_MEM_READ( "ioctl(CDROMREADTOCENTRY (cdte_track, char))", |
| (Addr) &(((struct vki_cdrom_tocentry*) ARG3)->cdte_track), |
| sizeof(((struct vki_cdrom_tocentry*) ARG3)->cdte_track)); |
| PRE_MEM_WRITE( "ioctl(CDROMREADTOCENTRY)", ARG3, |
| sizeof(struct vki_cdrom_tocentry)); |
| break; |
| case VKI_CDROMMULTISESSION: /* 0x5310 */ |
| PRE_MEM_WRITE( "ioctl(CDROMMULTISESSION)", ARG3, |
| sizeof(struct vki_cdrom_multisession)); |
| break; |
| case VKI_CDROMVOLREAD: /* 0x5313 */ |
| PRE_MEM_WRITE( "ioctl(CDROMVOLREAD)", ARG3, |
| sizeof(struct vki_cdrom_volctrl)); |
| break; |
| case VKI_CDROMREADAUDIO: /* 0x530e */ |
| PRE_MEM_READ( "ioctl(CDROMREADAUDIO)", ARG3, |
| sizeof (struct vki_cdrom_read_audio)); |
| if ( ARG3 ) { |
| /* ToDo: don't do any of the following if the structure is invalid */ |
| struct vki_cdrom_read_audio *cra = (struct vki_cdrom_read_audio *) ARG3; |
| PRE_MEM_WRITE( "ioctl(CDROMREADAUDIO).buf", |
| (Addr)(cra->buf), cra->nframes * VKI_CD_FRAMESIZE_RAW); |
| } |
| break; |
| case VKI_CDROMPLAYMSF: |
| PRE_MEM_READ( "ioctl(CDROMPLAYMSF)", ARG3, sizeof(struct vki_cdrom_msf)); |
| break; |
| /* The following two are probably bogus (should check args |
| for readability). JRS 20021117 */ |
| case VKI_CDROM_DRIVE_STATUS: /* 0x5326 */ |
| case VKI_CDROM_CLEAR_OPTIONS: /* 0x5321 */ |
| break; |
| |
| case VKI_FIGETBSZ: |
| PRE_MEM_WRITE( "ioctl(FIGETBSZ)", ARG3, sizeof(unsigned long)); |
| break; |
| case VKI_FIBMAP: |
| PRE_MEM_READ( "ioctl(FIBMAP)", ARG3, sizeof(unsigned long)); |
| break; |
| |
| case VKI_FBIOGET_VSCREENINFO: /* 0x4600 */ |
| PRE_MEM_WRITE( "ioctl(FBIOGET_VSCREENINFO)", ARG3, |
| sizeof(struct vki_fb_var_screeninfo)); |
| break; |
| case VKI_FBIOGET_FSCREENINFO: /* 0x4602 */ |
| PRE_MEM_WRITE( "ioctl(FBIOGET_FSCREENINFO)", ARG3, |
| sizeof(struct vki_fb_fix_screeninfo)); |
| break; |
| |
| case VKI_PPCLAIM: |
| case VKI_PPEXCL: |
| case VKI_PPYIELD: |
| case VKI_PPRELEASE: |
| break; |
| case VKI_PPSETMODE: |
| PRE_MEM_READ( "ioctl(PPSETMODE)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPGETMODE: |
| PRE_MEM_WRITE( "ioctl(PPGETMODE)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPSETPHASE: |
| PRE_MEM_READ( "ioctl(PPSETPHASE)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPGETPHASE: |
| PRE_MEM_WRITE( "ioctl(PPGETPHASE)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPGETMODES: |
| PRE_MEM_WRITE( "ioctl(PPGETMODES)", ARG3, sizeof(unsigned int) ); |
| break; |
| case VKI_PPSETFLAGS: |
| PRE_MEM_READ( "ioctl(PPSETFLAGS)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPGETFLAGS: |
| PRE_MEM_WRITE( "ioctl(PPGETFLAGS)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPRSTATUS: |
| PRE_MEM_WRITE( "ioctl(PPRSTATUS)", ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPRDATA: |
| PRE_MEM_WRITE( "ioctl(PPRDATA)", ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPRCONTROL: |
| PRE_MEM_WRITE( "ioctl(PPRCONTROL)", ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPWDATA: |
| PRE_MEM_READ( "ioctl(PPWDATA)", ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPWCONTROL: |
| PRE_MEM_READ( "ioctl(PPWCONTROL)", ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPFCONTROL: |
| PRE_MEM_READ( "ioctl(PPFCONTROL)", ARG3, 2 * sizeof(unsigned char) ); |
| break; |
| case VKI_PPDATADIR: |
| PRE_MEM_READ( "ioctl(PPDATADIR)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPNEGOT: |
| PRE_MEM_READ( "ioctl(PPNEGOT)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPWCTLONIRQ: |
| PRE_MEM_READ( "ioctl(PPWCTLONIRQ)",ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPCLRIRQ: |
| PRE_MEM_WRITE( "ioctl(PPCLRIRQ)", ARG3, sizeof(int) ); |
| break; |
| case VKI_PPSETTIME: |
| PRE_MEM_READ( "ioctl(PPSETTIME)", ARG3, sizeof(struct vki_timeval) ); |
| break; |
| case VKI_PPGETTIME: |
| PRE_MEM_WRITE( "ioctl(PPGETTIME)", ARG3, sizeof(struct vki_timeval) ); |
| break; |
| |
| case VKI_GIO_FONT: |
| PRE_MEM_WRITE( "ioctl(GIO_FONT)", ARG3, 32 * 256 ); |
| break; |
| case VKI_PIO_FONT: |
| PRE_MEM_READ( "ioctl(PIO_FONT)", ARG3, 32 * 256 ); |
| break; |
| |
| case VKI_GIO_FONTX: |
| PRE_MEM_READ( "ioctl(GIO_FONTX)", ARG3, sizeof(struct vki_consolefontdesc) ); |
| if ( ARG3 ) { |
| /* ToDo: don't do any of the following if the structure is invalid */ |
| struct vki_consolefontdesc *cfd = (struct vki_consolefontdesc *)ARG3; |
| PRE_MEM_WRITE( "ioctl(GIO_FONTX).chardata", (Addr)cfd->chardata, |
| 32 * cfd->charcount ); |
| } |
| break; |
| case VKI_PIO_FONTX: |
| PRE_MEM_READ( "ioctl(PIO_FONTX)", ARG3, sizeof(struct vki_consolefontdesc) ); |
| if ( ARG3 ) { |
| /* ToDo: don't do any of the following if the structure is invalid */ |
| struct vki_consolefontdesc *cfd = (struct vki_consolefontdesc *)ARG3; |
| PRE_MEM_READ( "ioctl(PIO_FONTX).chardata", (Addr)cfd->chardata, |
| 32 * cfd->charcount ); |
| } |
| break; |
| |
| case VKI_PIO_FONTRESET: |
| break; |
| |
| case VKI_GIO_CMAP: |
| PRE_MEM_WRITE( "ioctl(GIO_CMAP)", ARG3, 16 * 3 ); |
| break; |
| case VKI_PIO_CMAP: |
| PRE_MEM_READ( "ioctl(PIO_CMAP)", ARG3, 16 * 3 ); |
| break; |
| |
| case VKI_KIOCSOUND: |
| case VKI_KDMKTONE: |
| break; |
| |
| case VKI_KDGETLED: |
| PRE_MEM_WRITE( "ioctl(KDGETLED)", ARG3, sizeof(char) ); |
| break; |
| case VKI_KDSETLED: |
| break; |
| |
| case VKI_KDGKBTYPE: |
| PRE_MEM_WRITE( "ioctl(KDGKBTYPE)", ARG3, sizeof(char) ); |
| break; |
| |
| case VKI_KDADDIO: |
| case VKI_KDDELIO: |
| case VKI_KDENABIO: |
| case VKI_KDDISABIO: |
| break; |
| |
| case VKI_KDSETMODE: |
| break; |
| case VKI_KDGETMODE: |
| PRE_MEM_WRITE( "ioctl(KDGETMODE)", ARG3, sizeof(int) ); |
| break; |
| |
| case VKI_KDMAPDISP: |
| case VKI_KDUNMAPDISP: |
| break; |
| |
| case VKI_GIO_SCRNMAP: |
| PRE_MEM_WRITE( "ioctl(GIO_SCRNMAP)", ARG3, VKI_E_TABSZ ); |
| break; |
| case VKI_PIO_SCRNMAP: |
| PRE_MEM_READ( "ioctl(PIO_SCRNMAP)", ARG3, VKI_E_TABSZ ); |
| break; |
| case VKI_GIO_UNISCRNMAP: |
| PRE_MEM_WRITE( "ioctl(GIO_UNISCRNMAP)", ARG3, |
| VKI_E_TABSZ * sizeof(unsigned short) ); |
| break; |
| case VKI_PIO_UNISCRNMAP: |
| PRE_MEM_READ( "ioctl(PIO_UNISCRNMAP)", ARG3, |
| VKI_E_TABSZ * sizeof(unsigned short) ); |
| break; |
| |
| case VKI_KDGKBMODE: |
| PRE_MEM_WRITE( "ioctl(KDGKBMODE)", ARG3, sizeof(int) ); |
| break; |
| case VKI_KDSKBMODE: |
| break; |
| |
| case VKI_KDGKBMETA: |
| PRE_MEM_WRITE( "ioctl(KDGKBMETA)", ARG3, sizeof(int) ); |
| break; |
| case VKI_KDSKBMETA: |
| break; |
| |
| case VKI_KDGKBLED: |
| PRE_MEM_WRITE( "ioctl(KDGKBLED)", ARG3, sizeof(char) ); |
| break; |
| case VKI_KDSKBLED: |
| break; |
| |
| case VKI_KDGKBENT: |
| PRE_MEM_READ( "ioctl(KDGKBENT).kb_table", |
| (Addr)&((struct vki_kbentry *)ARG3)->kb_table, |
| sizeof(((struct vki_kbentry *)ARG3)->kb_table) ); |
| PRE_MEM_READ( "ioctl(KDGKBENT).kb_index", |
| (Addr)&((struct vki_kbentry *)ARG3)->kb_index, |
| sizeof(((struct vki_kbentry *)ARG3)->kb_index) ); |
| PRE_MEM_WRITE( "ioctl(KDGKBENT).kb_value", |
| (Addr)&((struct vki_kbentry *)ARG3)->kb_value, |
| sizeof(((struct vki_kbentry *)ARG3)->kb_value) ); |
| break; |
| case VKI_KDSKBENT: |
| PRE_MEM_READ( "ioctl(KDSKBENT).kb_table", |
| (Addr)&((struct vki_kbentry *)ARG3)->kb_table, |
| sizeof(((struct vki_kbentry *)ARG3)->kb_table) ); |
| PRE_MEM_READ( "ioctl(KDSKBENT).kb_index", |
| (Addr)&((struct vki_kbentry *)ARG3)->kb_index, |
| sizeof(((struct vki_kbentry *)ARG3)->kb_index) ); |
| PRE_MEM_READ( "ioctl(KDSKBENT).kb_value", |
| (Addr)&((struct vki_kbentry *)ARG3)->kb_value, |
| sizeof(((struct vki_kbentry *)ARG3)->kb_value) ); |
| break; |
| |
| case VKI_KDGKBSENT: |
| PRE_MEM_READ( "ioctl(KDGKBSENT).kb_func", |
| (Addr)&((struct vki_kbsentry *)ARG3)->kb_func, |
| sizeof(((struct vki_kbsentry *)ARG3)->kb_func) ); |
| PRE_MEM_WRITE( "ioctl(KDGKSENT).kb_string", |
| (Addr)((struct vki_kbsentry *)ARG3)->kb_string, |
| sizeof(((struct vki_kbsentry *)ARG3)->kb_string) ); |
| break; |
| case VKI_KDSKBSENT: |
| PRE_MEM_READ( "ioctl(KDSKBSENT).kb_func", |
| (Addr)&((struct vki_kbsentry *)ARG3)->kb_func, |
| sizeof(((struct vki_kbsentry *)ARG3)->kb_func) ); |
| PRE_MEM_RASCIIZ( "ioctl(KDSKBSENT).kb_string", |
| (Addr)((struct vki_kbsentry *)ARG3)->kb_string ); |
| break; |
| |
| case VKI_KDGKBDIACR: |
| PRE_MEM_WRITE( "ioctl(KDGKBDIACR)", ARG3, sizeof(struct vki_kbdiacrs) ); |
| break; |
| case VKI_KDSKBDIACR: |
| PRE_MEM_READ( "ioctl(KDSKBDIACR)", ARG3, sizeof(struct vki_kbdiacrs) ); |
| break; |
| |
| case VKI_KDGETKEYCODE: |
| PRE_MEM_READ( "ioctl(KDGETKEYCODE).scancode", |
| (Addr)&((struct vki_kbkeycode *)ARG3)->scancode, |
| sizeof(((struct vki_kbkeycode *)ARG3)->scancode) ); |
| PRE_MEM_WRITE( "ioctl(KDGETKEYCODE).keycode", |
| (Addr)((struct vki_kbkeycode *)ARG3)->keycode, |
| sizeof(((struct vki_kbkeycode *)ARG3)->keycode) ); |
| break; |
| case VKI_KDSETKEYCODE: |
| PRE_MEM_READ( "ioctl(KDSETKEYCODE).scancode", |
| (Addr)&((struct vki_kbkeycode *)ARG3)->scancode, |
| sizeof(((struct vki_kbkeycode *)ARG3)->scancode) ); |
| PRE_MEM_READ( "ioctl(KDSETKEYCODE).keycode", |
| (Addr)((struct vki_kbkeycode *)ARG3)->keycode, |
| sizeof(((struct vki_kbkeycode *)ARG3)->keycode) ); |
| break; |
| |
| case VKI_KDSIGACCEPT: |
| break; |
| |
| case VKI_KDKBDREP: |
| PRE_MEM_READ( "ioctl(KBKBDREP)", ARG3, sizeof(struct vki_kbd_repeat) ); |
| break; |
| |
| /* We don't have any specific information on it, so |
| try to do something reasonable based on direction and |
| size bits. The encoding scheme is described in |
| /usr/include/asm/ioctl.h. |
| |
| According to Simon Hausmann, _IOC_READ means the kernel |
| writes a value to the ioctl value passed from the user |
| space and the other way around with _IOC_WRITE. */ |
| default: { |
| UInt dir = _VKI_IOC_DIR(ARG2); |
| UInt size = _VKI_IOC_SIZE(ARG2); |
| if (VG_(strstr)(VG_(clo_weird_hacks), "lax-ioctls") != NULL) { |
| /* |
| * Be very lax about ioctl handling; the only |
| * assumption is that the size is correct. Doesn't |
| * require the full buffer to be initialized when |
| * writing. Without this, using some device |
| * drivers with a large number of strange ioctl |
| * commands becomes very tiresome. |
| */ |
| } else if (/* size == 0 || */ dir == _VKI_IOC_NONE) { |
| static Int moans = 3; |
| if (moans > 0) { |
| moans--; |
| VG_(message)(Vg_UserMsg, |
| "Warning: noted but unhandled ioctl 0x%x" |
| " with no size/direction hints", |
| ARG2); |
| VG_(message)(Vg_UserMsg, |
| " This could cause spurious value errors" |
| " to appear."); |
| VG_(message)(Vg_UserMsg, |
| " See README_MISSING_SYSCALL_OR_IOCTL for " |
| "guidance on writing a proper wrapper." ); |
| } |
| } else { |
| if ((dir & _VKI_IOC_WRITE) && size > 0) |
| PRE_MEM_READ( "ioctl(generic)", ARG3, size); |
| if ((dir & _VKI_IOC_READ) && size > 0) |
| PRE_MEM_WRITE( "ioctl(generic)", ARG3, size); |
| } |
| break; |
| } |
| } |
| } |
| |
| POST(sys_ioctl) |
| { |
| switch (ARG2 /* request */) { |
| case VKI_TCSETS: |
| case VKI_TCSETSW: |
| case VKI_TCSETSF: |
| break; |
| case VKI_TCGETS: |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_termios) ); |
| break; |
| case VKI_TCSETA: |
| case VKI_TCSETAW: |
| case VKI_TCSETAF: |
| break; |
| case VKI_TCGETA: |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_termio) ); |
| break; |
| case VKI_TCSBRK: |
| case VKI_TCXONC: |
| case VKI_TCSBRKP: |
| case VKI_TCFLSH: |
| break; |
| case VKI_TIOCGWINSZ: |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_winsize) ); |
| break; |
| case VKI_TIOCSWINSZ: |
| case VKI_TIOCMBIS: |
| case VKI_TIOCMBIC: |
| case VKI_TIOCMSET: |
| break; |
| case VKI_TIOCLINUX: |
| POST_MEM_WRITE( ARG3, sizeof(char *) ); |
| break; |
| case VKI_TIOCGPGRP: |
| /* Get process group ID for foreground processing group. */ |
| POST_MEM_WRITE( ARG3, sizeof(vki_pid_t) ); |
| break; |
| case VKI_TIOCSPGRP: |
| /* Set a process group ID? */ |
| POST_MEM_WRITE( ARG3, sizeof(vki_pid_t) ); |
| break; |
| case VKI_TIOCGPTN: /* Get Pty Number (of pty-mux device) */ |
| POST_MEM_WRITE( ARG3, sizeof(int)); |
| break; |
| case VKI_TIOCSCTTY: |
| break; |
| case VKI_TIOCSPTLCK: /* Lock/unlock Pty */ |
| break; |
| case VKI_FIONBIO: |
| break; |
| case VKI_FIOASYNC: |
| break; |
| case VKI_FIONREAD: /* identical to SIOCINQ */ |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| |
| case VKI_SG_SET_COMMAND_Q: |
| break; |
| case VKI_SG_IO: |
| POST_MEM_WRITE(ARG3, sizeof(vki_sg_io_hdr_t)); |
| break; |
| case VKI_SG_GET_SCSI_ID: |
| POST_MEM_WRITE(ARG3, sizeof(vki_sg_scsi_id_t)); |
| break; |
| case VKI_SG_SET_RESERVED_SIZE: |
| break; |
| case VKI_SG_SET_TIMEOUT: |
| break; |
| case VKI_SG_GET_RESERVED_SIZE: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_SG_GET_TIMEOUT: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_SG_GET_VERSION_NUM: |
| break; |
| case VKI_SG_EMULATED_HOST: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_SG_GET_SG_TABLESIZE: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| |
| case VKI_IIOCGETCPS: |
| POST_MEM_WRITE( ARG3, VKI_ISDN_MAX_CHANNELS * 2 * sizeof(unsigned long) ); |
| break; |
| case VKI_IIOCNETGPN: |
| POST_MEM_WRITE( ARG3, sizeof(vki_isdn_net_ioctl_phone) ); |
| break; |
| |
| /* These all use struct ifreq AFAIK */ |
| case VKI_SIOCGIFINDEX: /* get iface index */ |
| POST_MEM_WRITE( (Addr)&((struct vki_ifreq *)ARG3)->vki_ifr_ifindex, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_ifindex) ); |
| break; |
| case VKI_SIOCGIFFLAGS: /* get flags */ |
| POST_MEM_WRITE( (Addr)&((struct vki_ifreq *)ARG3)->vki_ifr_flags, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_flags) ); |
| break; |
| case VKI_SIOCGIFHWADDR: /* Get hardware address */ |
| POST_MEM_WRITE( (Addr)&((struct vki_ifreq *)ARG3)->ifr_hwaddr, |
| sizeof(((struct vki_ifreq *)ARG3)->ifr_hwaddr) ); |
| break; |
| case VKI_SIOCGIFMTU: /* get MTU size */ |
| POST_MEM_WRITE( (Addr)&((struct vki_ifreq *)ARG3)->vki_ifr_mtu, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_mtu) ); |
| break; |
| case VKI_SIOCGIFADDR: /* get PA address */ |
| case VKI_SIOCGIFDSTADDR: /* get remote PA address */ |
| case VKI_SIOCGIFBRDADDR: /* get broadcast PA address */ |
| case VKI_SIOCGIFNETMASK: /* get network PA mask */ |
| POST_MEM_WRITE( |
| (Addr)&((struct vki_ifreq *)ARG3)->ifr_addr, |
| sizeof(((struct vki_ifreq *)ARG3)->ifr_addr) ); |
| break; |
| case VKI_SIOCGIFMETRIC: /* get metric */ |
| POST_MEM_WRITE( |
| (Addr)&((struct vki_ifreq *)ARG3)->vki_ifr_metric, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_metric) ); |
| break; |
| case VKI_SIOCGIFMAP: /* Get device parameters */ |
| POST_MEM_WRITE( |
| (Addr)&((struct vki_ifreq *)ARG3)->ifr_map, |
| sizeof(((struct vki_ifreq *)ARG3)->ifr_map) ); |
| break; |
| break; |
| case VKI_SIOCGIFTXQLEN: /* Get the tx queue length */ |
| POST_MEM_WRITE( |
| (Addr)&((struct vki_ifreq *)ARG3)->ifr_qlen, |
| sizeof(((struct vki_ifreq *)ARG3)->ifr_qlen) ); |
| break; |
| case VKI_SIOCGIFNAME: /* get iface name */ |
| POST_MEM_WRITE( |
| (Addr)&((struct vki_ifreq *)ARG3)->vki_ifr_name, |
| sizeof(((struct vki_ifreq *)ARG3)->vki_ifr_name) ); |
| break; |
| case VKI_SIOCGMIIPHY: /* get hardware entry */ |
| POST_MEM_WRITE( |
| (Addr)&((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->phy_id, |
| sizeof(((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->phy_id) ); |
| break; |
| case VKI_SIOCGMIIREG: /* get hardware entry registers */ |
| POST_MEM_WRITE( |
| (Addr)&((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->val_out, |
| sizeof(((struct vki_mii_ioctl_data *)&((struct vki_ifreq *)ARG3)->vki_ifr_data)->val_out) ); |
| break; |
| case VKI_SIOCGIFCONF: /* get iface list */ |
| /* WAS: |
| PRE_MEM_WRITE("ioctl(SIOCGIFCONF)", ARG3, sizeof(struct ifconf)); |
| KERNEL_DO_SYSCALL(tid,RES); |
| if (!VG_(is_kerror)(RES) && RES == 0) |
| POST_MEM_WRITE(ARG3, sizeof(struct ifconf)); |
| */ |
| if (RES == 0 && ARG3 ) { |
| struct vki_ifconf *ifc = (struct vki_ifconf *) ARG3; |
| if (ifc->vki_ifc_buf != NULL) |
| POST_MEM_WRITE( (Addr)(ifc->vki_ifc_buf), ifc->ifc_len ); |
| } |
| break; |
| case VKI_SIOCGSTAMP: |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_timeval) ); |
| break; |
| /* SIOCOUTQ is an ioctl that, when called on a socket, returns |
| the number of bytes currently in that socket's send buffer. |
| It writes this value as an int to the memory location |
| indicated by the third argument of ioctl(2). */ |
| case VKI_SIOCOUTQ: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_SIOCGRARP: /* get RARP table entry */ |
| case VKI_SIOCGARP: /* get ARP table entry */ |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_arpreq)); |
| break; |
| |
| case VKI_SIOCSIFFLAGS: /* set flags */ |
| case VKI_SIOCSIFMAP: /* Set device parameters */ |
| case VKI_SIOCSIFTXQLEN: /* Set the tx queue length */ |
| case VKI_SIOCSIFDSTADDR: /* set remote PA address */ |
| case VKI_SIOCSIFBRDADDR: /* set broadcast PA address */ |
| case VKI_SIOCSIFNETMASK: /* set network PA mask */ |
| case VKI_SIOCSIFMETRIC: /* set metric */ |
| case VKI_SIOCSIFADDR: /* set PA address */ |
| case VKI_SIOCSIFMTU: /* set MTU size */ |
| case VKI_SIOCSIFHWADDR: /* set hardware address */ |
| case VKI_SIOCSMIIREG: /* set hardware entry registers */ |
| break; |
| /* Routing table calls. */ |
| case VKI_SIOCADDRT: /* add routing table entry */ |
| case VKI_SIOCDELRT: /* delete routing table entry */ |
| break; |
| |
| /* RARP cache control calls. */ |
| case VKI_SIOCDRARP: /* delete RARP table entry */ |
| case VKI_SIOCSRARP: /* set RARP table entry */ |
| /* ARP cache control calls. */ |
| case VKI_SIOCSARP: /* set ARP table entry */ |
| case VKI_SIOCDARP: /* delete ARP table entry */ |
| break; |
| |
| case VKI_SIOCGPGRP: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_SIOCSPGRP: |
| break; |
| |
| /* linux/soundcard interface (OSS) */ |
| case VKI_SNDCTL_SEQ_GETOUTCOUNT: |
| case VKI_SNDCTL_SEQ_GETINCOUNT: |
| case VKI_SNDCTL_SEQ_PERCMODE: |
| case VKI_SNDCTL_SEQ_TESTMIDI: |
| case VKI_SNDCTL_SEQ_RESETSAMPLES: |
| case VKI_SNDCTL_SEQ_NRSYNTHS: |
| case VKI_SNDCTL_SEQ_NRMIDIS: |
| case VKI_SNDCTL_SEQ_GETTIME: |
| case VKI_SNDCTL_DSP_GETFMTS: |
| case VKI_SNDCTL_DSP_GETTRIGGER: |
| case VKI_SNDCTL_DSP_GETODELAY: |
| case VKI_SNDCTL_DSP_GETSPDIF: |
| case VKI_SNDCTL_DSP_GETCAPS: |
| case VKI_SOUND_PCM_READ_RATE: |
| case VKI_SOUND_PCM_READ_CHANNELS: |
| case VKI_SOUND_PCM_READ_BITS: |
| case (VKI_SOUND_PCM_READ_BITS|0x40000000): /* what the fuck ? */ |
| case VKI_SOUND_PCM_READ_FILTER: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_SNDCTL_SEQ_CTRLRATE: |
| case VKI_SNDCTL_DSP_SPEED: |
| case VKI_SNDCTL_DSP_STEREO: |
| case VKI_SNDCTL_DSP_GETBLKSIZE: |
| case VKI_SNDCTL_DSP_CHANNELS: |
| case VKI_SOUND_PCM_WRITE_FILTER: |
| case VKI_SNDCTL_DSP_SUBDIVIDE: |
| case VKI_SNDCTL_DSP_SETFRAGMENT: |
| case VKI_SNDCTL_DSP_GETCHANNELMASK: |
| case VKI_SNDCTL_DSP_BIND_CHANNEL: |
| case VKI_SNDCTL_TMR_TIMEBASE: |
| case VKI_SNDCTL_TMR_TEMPO: |
| case VKI_SNDCTL_TMR_SOURCE: |
| case VKI_SNDCTL_MIDI_PRETIME: |
| case VKI_SNDCTL_MIDI_MPUMODE: |
| break; |
| case VKI_SNDCTL_DSP_GETOSPACE: |
| case VKI_SNDCTL_DSP_GETISPACE: |
| POST_MEM_WRITE(ARG3, sizeof(vki_audio_buf_info)); |
| break; |
| case VKI_SNDCTL_DSP_SETTRIGGER: |
| break; |
| |
| case VKI_SNDCTL_DSP_POST: |
| case VKI_SNDCTL_DSP_RESET: |
| case VKI_SNDCTL_DSP_SYNC: |
| case VKI_SNDCTL_DSP_SETSYNCRO: |
| case VKI_SNDCTL_DSP_SETDUPLEX: |
| break; |
| |
| /* Real Time Clock (/dev/rtc) ioctls */ |
| case VKI_RTC_UIE_ON: |
| case VKI_RTC_UIE_OFF: |
| case VKI_RTC_AIE_ON: |
| case VKI_RTC_AIE_OFF: |
| case VKI_RTC_PIE_ON: |
| case VKI_RTC_PIE_OFF: |
| case VKI_RTC_IRQP_SET: |
| break; |
| case VKI_RTC_RD_TIME: |
| case VKI_RTC_ALM_READ: |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_rtc_time)); |
| break; |
| case VKI_RTC_ALM_SET: |
| break; |
| case VKI_RTC_IRQP_READ: |
| POST_MEM_WRITE(ARG3, sizeof(unsigned long)); |
| break; |
| |
| case VKI_BLKGETSIZE: |
| POST_MEM_WRITE(ARG3, sizeof(unsigned long)); |
| break; |
| |
| /* Hard disks */ |
| case VKI_HDIO_GET_IDENTITY: /* 0x030d */ |
| POST_MEM_WRITE(ARG3, VKI_SIZEOF_STRUCT_HD_DRIVEID ); |
| break; |
| |
| /* CD ROM stuff (??) */ |
| case VKI_CDROMSUBCHNL: |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_cdrom_subchnl)); |
| break; |
| case VKI_CDROMREADTOCHDR: |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_cdrom_tochdr)); |
| break; |
| case VKI_CDROMREADTOCENTRY: |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_cdrom_tochdr)); |
| break; |
| case VKI_CDROMMULTISESSION: |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_cdrom_multisession)); |
| break; |
| case VKI_CDROMVOLREAD: |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_cdrom_volctrl)); |
| break; |
| case VKI_CDROMREADAUDIO: |
| { |
| struct vki_cdrom_read_audio *cra = (struct vki_cdrom_read_audio *) ARG3; |
| POST_MEM_WRITE( (Addr)(cra->buf), cra->nframes * VKI_CD_FRAMESIZE_RAW); |
| break; |
| } |
| |
| case VKI_CDROMPLAYMSF: |
| break; |
| /* The following two are probably bogus (should check args |
| for readability). JRS 20021117 */ |
| case VKI_CDROM_DRIVE_STATUS: /* 0x5326 */ |
| case VKI_CDROM_CLEAR_OPTIONS: /* 0x5321 */ |
| break; |
| |
| case VKI_FIGETBSZ: |
| POST_MEM_WRITE(ARG3, sizeof(unsigned long)); |
| break; |
| case VKI_FIBMAP: |
| POST_MEM_WRITE(ARG3, sizeof(unsigned long)); |
| break; |
| |
| case VKI_FBIOGET_VSCREENINFO: //0x4600 |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_fb_var_screeninfo)); |
| break; |
| case VKI_FBIOGET_FSCREENINFO: //0x4602 |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_fb_fix_screeninfo)); |
| break; |
| |
| case VKI_PPCLAIM: |
| case VKI_PPEXCL: |
| case VKI_PPYIELD: |
| case VKI_PPRELEASE: |
| case VKI_PPSETMODE: |
| case VKI_PPSETPHASE: |
| case VKI_PPSETFLAGS: |
| case VKI_PPWDATA: |
| case VKI_PPWCONTROL: |
| case VKI_PPFCONTROL: |
| case VKI_PPDATADIR: |
| case VKI_PPNEGOT: |
| case VKI_PPWCTLONIRQ: |
| case VKI_PPSETTIME: |
| break; |
| case VKI_PPGETMODE: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| case VKI_PPGETPHASE: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| case VKI_PPGETMODES: |
| POST_MEM_WRITE( ARG3, sizeof(unsigned int) ); |
| break; |
| case VKI_PPGETFLAGS: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| case VKI_PPRSTATUS: |
| POST_MEM_WRITE( ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPRDATA: |
| POST_MEM_WRITE( ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPRCONTROL: |
| POST_MEM_WRITE( ARG3, sizeof(unsigned char) ); |
| break; |
| case VKI_PPCLRIRQ: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| case VKI_PPGETTIME: |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_timeval) ); |
| break; |
| |
| case VKI_GIO_FONT: |
| POST_MEM_WRITE( ARG3, 32 * 256 ); |
| break; |
| case VKI_PIO_FONT: |
| break; |
| |
| case VKI_GIO_FONTX: |
| POST_MEM_WRITE( (Addr)((struct vki_consolefontdesc *)ARG3)->chardata, |
| 32 * ((struct vki_consolefontdesc *)ARG3)->charcount ); |
| break; |
| case VKI_PIO_FONTX: |
| break; |
| |
| case VKI_PIO_FONTRESET: |
| break; |
| |
| case VKI_GIO_CMAP: |
| POST_MEM_WRITE( ARG3, 16 * 3 ); |
| break; |
| case VKI_PIO_CMAP: |
| break; |
| |
| case VKI_KIOCSOUND: |
| case VKI_KDMKTONE: |
| break; |
| |
| case VKI_KDGETLED: |
| POST_MEM_WRITE( ARG3, sizeof(char) ); |
| break; |
| case VKI_KDSETLED: |
| break; |
| |
| case VKI_KDGKBTYPE: |
| POST_MEM_WRITE( ARG3, sizeof(char) ); |
| break; |
| |
| case VKI_KDADDIO: |
| case VKI_KDDELIO: |
| case VKI_KDENABIO: |
| case VKI_KDDISABIO: |
| break; |
| |
| case VKI_KDSETMODE: |
| break; |
| case VKI_KDGETMODE: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| |
| case VKI_KDMAPDISP: |
| case VKI_KDUNMAPDISP: |
| break; |
| |
| case VKI_GIO_SCRNMAP: |
| POST_MEM_WRITE( ARG3, VKI_E_TABSZ ); |
| break; |
| case VKI_PIO_SCRNMAP: |
| break; |
| case VKI_GIO_UNISCRNMAP: |
| POST_MEM_WRITE( ARG3, VKI_E_TABSZ * sizeof(unsigned short) ); |
| break; |
| case VKI_PIO_UNISCRNMAP: |
| break; |
| |
| case VKI_KDGKBMODE: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| case VKI_KDSKBMODE: |
| break; |
| |
| case VKI_KDGKBMETA: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| case VKI_KDSKBMETA: |
| break; |
| |
| case VKI_KDGKBLED: |
| POST_MEM_WRITE( ARG3, sizeof(char) ); |
| break; |
| case VKI_KDSKBLED: |
| break; |
| |
| case VKI_KDGKBENT: |
| POST_MEM_WRITE( (Addr)&((struct vki_kbentry *)ARG3)->kb_value, |
| sizeof(((struct vki_kbentry *)ARG3)->kb_value) ); |
| break; |
| case VKI_KDSKBENT: |
| break; |
| |
| case VKI_KDGKBSENT: |
| POST_MEM_WRITE( (Addr)((struct vki_kbsentry *)ARG3)->kb_string, |
| sizeof(((struct vki_kbsentry *)ARG3)->kb_string) ); |
| break; |
| case VKI_KDSKBSENT: |
| break; |
| |
| case VKI_KDGKBDIACR: |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_kbdiacrs) ); |
| break; |
| case VKI_KDSKBDIACR: |
| break; |
| |
| case VKI_KDGETKEYCODE: |
| POST_MEM_WRITE( (Addr)((struct vki_kbkeycode *)ARG3)->keycode, |
| sizeof(((struct vki_kbkeycode *)ARG3)->keycode) ); |
| break; |
| case VKI_KDSETKEYCODE: |
| break; |
| |
| case VKI_KDSIGACCEPT: |
| break; |
| |
| case VKI_KDKBDREP: |
| break; |
| |
| /* We don't have any specific information on it, so |
| try to do something reasonable based on direction and |
| size bits. The encoding scheme is described in |
| /usr/include/asm/ioctl.h. |
| |
| According to Simon Hausmann, _IOC_READ means the kernel |
| writes a value to the ioctl value passed from the user |
| space and the other way around with _IOC_WRITE. */ |
| default: { |
| UInt dir = _VKI_IOC_DIR(ARG2); |
| UInt size = _VKI_IOC_SIZE(ARG2); |
| if (size > 0 && (dir & _VKI_IOC_READ) |
| && RES == 0 |
| && ARG3 != (Addr)NULL) |
| POST_MEM_WRITE(ARG3, size); |
| break; |
| } |
| } |
| } |
| |
| /* |
| If we're sending a SIGKILL to one of our own threads, then simulate |
| it rather than really sending the signal, so that the target thread |
| gets a chance to clean up. Returns True if we did the killing (or |
| no killing is necessary), and False if the caller should use the |
| normal kill syscall. |
| |
| "pid" is any pid argument which can be passed to kill; group kills |
| (< -1, 0), and owner kills (-1) are ignored, on the grounds that |
| they'll most likely hit all the threads and we won't need to worry |
| about cleanup. In truth, we can't fully emulate these multicast |
| kills. |
| |
| "tgid" is a thread group id. If it is not -1, then the target |
| thread must be in that thread group. |
| */ |
| Bool VG_(do_sigkill)(Int pid, Int tgid) |
| { |
| ThreadState *tst; |
| ThreadId tid; |
| |
| if (pid <= 0) |
| return False; |
| |
| tid = VG_(get_lwp_tid)(pid); |
| if (tid == VG_INVALID_THREADID) |
| return False; /* none of our threads */ |
| |
| tst = VG_(get_ThreadState)(tid); |
| if (tst == NULL || tst->status == VgTs_Empty) |
| return False; /* hm, shouldn't happen */ |
| |
| if (tgid != -1 && tst->os_state.threadgroup != tgid) |
| return False; /* not the right thread group */ |
| |
| /* Check to see that the target isn't already exiting. */ |
| if (!VG_(is_exiting)(tid)) { |
| if (VG_(clo_trace_signals)) |
| VG_(message)(Vg_DebugMsg, "Thread %d being killed with SIGKILL", tst->tid); |
| |
| tst->exitreason = VgSrc_FatalSig; |
| tst->os_state.fatalsig = VKI_SIGKILL; |
| |
| if (!VG_(is_running_thread)(tid)) |
| VG_(kill_thread)(tid); |
| } |
| |
| return True; |
| } |
| |
| PRE(sys_kill, Special) |
| { |
| /* int kill(pid_t pid, int sig); */ |
| PRINT("sys_kill ( %d, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "kill", int, pid, int, sig); |
| if (!VG_(client_signal_OK)(ARG2)) { |
| SET_RESULT( -VKI_EINVAL ); |
| return; |
| } |
| |
| /* If we're sending SIGKILL, check to see if the target is one of |
| our threads and handle it specially. */ |
| if (ARG2 == VKI_SIGKILL && VG_(do_sigkill)(ARG1, -1)) |
| SET_RESULT(0); |
| else |
| SET_RESULT(VG_(do_syscall2)(SYSNO, ARG1, ARG2)); |
| |
| if (VG_(clo_trace_signals)) |
| VG_(message)(Vg_DebugMsg, "kill: sent signal %d to pid %d", |
| ARG2, ARG1); |
| // Check to see if this kill gave us a pending signal |
| VG_(poll_signals)(tid); |
| } |
| |
| PRE(sys_link, MayBlock) |
| { |
| PRINT("sys_link ( %p, %p)", ARG1, ARG2); |
| PRE_REG_READ2(long, "link", const char *, oldpath, const char *, newpath); |
| PRE_MEM_RASCIIZ( "link(oldpath)", ARG1); |
| PRE_MEM_RASCIIZ( "link(newpath)", ARG2); |
| } |
| |
| PRE(sys_lseek, 0) |
| { |
| PRINT("sys_lseek ( %d, %d, %d )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(vki_off_t, "lseek", |
| unsigned int, fd, vki_off_t, offset, unsigned int, whence); |
| } |
| |
| PRE(sys_newlstat, 0) |
| { |
| PRINT("sys_newlstat ( %p(%s), %p )", ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "lstat", char *, file_name, struct stat *, buf); |
| PRE_MEM_RASCIIZ( "lstat(file_name)", ARG1 ); |
| PRE_MEM_WRITE( "lstat(buf)", ARG2, sizeof(struct vki_stat) ); |
| } |
| |
| POST(sys_newlstat) |
| { |
| if (RES == 0) { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_stat) ); |
| } |
| } |
| |
| // XXX: this syscall is generic, but not necessarily applicable to every |
| // architecture -- I think only to 32-bit archs. We're going to need |
| // something like linux/core_os32.h for such things, eventually, I think. |
| // --njn |
| #ifndef __amd64__ |
| PRE(sys_lstat64, 0) |
| { |
| PRINT("sys_lstat64 ( %p(%s), %p )",ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "lstat64", char *, file_name, struct stat64 *, buf); |
| PRE_MEM_RASCIIZ( "lstat64(file_name)", ARG1 ); |
| PRE_MEM_WRITE( "lstat64(buf)", ARG2, sizeof(struct vki_stat64) ); |
| } |
| |
| POST(sys_lstat64) |
| { |
| if (RES == 0) { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) ); |
| } |
| } |
| #endif |
| |
| PRE(sys_mkdir, MayBlock) |
| { |
| PRINT("sys_mkdir ( %p, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "mkdir", const char *, pathname, int, mode); |
| PRE_MEM_RASCIIZ( "mkdir(pathname)", ARG1 ); |
| } |
| |
| PRE(old_mmap, Special) |
| { |
| /* struct mmap_arg_struct { |
| unsigned long addr; |
| unsigned long len; |
| unsigned long prot; |
| unsigned long flags; |
| unsigned long fd; |
| unsigned long offset; |
| }; */ |
| UInt a1, a2, a3, a4, a5, a6; |
| |
| PRE_REG_READ1(long, "old_mmap", struct mmap_arg_struct *, args); |
| VGP_GET_MMAP_ARGS(tst, a1, a2, a3, a4, a5, a6); |
| |
| PRINT("old_mmap ( %p, %llu, %d, %d, %d, %d )", |
| a1, (ULong)a2, a3, a4, a5, a6 ); |
| |
| if (a2 == 0) { |
| /* SuSV3 says: If len is zero, mmap() shall fail and no mapping |
| shall be established. */ |
| SET_RESULT( -VKI_EINVAL ); |
| return; |
| } |
| |
| if (/*(a4 & VKI_MAP_FIXED) &&*/ (0 != (a1 & (VKI_PAGE_SIZE-1)))) { |
| /* zap any misaligned addresses. */ |
| SET_RESULT( -VKI_EINVAL ); |
| return; |
| } |
| |
| if (a4 & VKI_MAP_FIXED) { |
| if (!VG_(valid_client_addr)(a1, a2, tid, "old_mmap")) { |
| PRINT("old_mmap failing: %p-%p\n", a1, a1+a2); |
| SET_RESULT( -VKI_ENOMEM ); |
| } |
| } else { |
| Addr a = VG_(find_map_space)(a1, a2, True); |
| if (a == 0 && a1 != 0) |
| a1 = VG_(find_map_space)(0, a2, True); |
| else |
| a1 = a; |
| if (a1 == 0) |
| SET_RESULT( -VKI_ENOMEM ); |
| else |
| a4 |= VKI_MAP_FIXED; |
| } |
| |
| if (RES != -VKI_ENOMEM) { |
| int res; |
| VGP_DO_MMAP(res, a1, a2, a3, a4, a5, a6); |
| SET_RESULT(res); |
| |
| if (!VG_(is_kerror)(RES)) { |
| vg_assert(VG_(valid_client_addr)(RES, a2, tid, "old_mmap")); |
| mmap_segment( (Addr)RES, a2, a3, a4, a5, a6 ); |
| } |
| } |
| } |
| |
| PRE(sys_mmap2, 0) |
| { |
| // Exactly like old_mmap() except: |
| // - all 6 args are passed in regs, rather than in a memory-block. |
| // - the file offset is specified in pagesize units rather than bytes, |
| // so that it can be used for files bigger than 2^32 bytes. |
| PRINT("sys_mmap2 ( %p, %llu, %d, %d, %d, %d )", |
| ARG1, (ULong)ARG2, ARG3, ARG4, ARG5, ARG6 ); |
| PRE_REG_READ6(long, "mmap2", |
| unsigned long, start, unsigned long, length, |
| unsigned long, prot, unsigned long, flags, |
| unsigned long, fd, unsigned long, offset); |
| |
| if (ARG2 == 0) { |
| /* SuSV3 says: If len is zero, mmap() shall fail and no mapping |
| shall be established. */ |
| SET_RESULT( -VKI_EINVAL ); |
| return; |
| } |
| |
| if (/*(ARG4 & VKI_MAP_FIXED) && */ (0 != (ARG1 & (VKI_PAGE_SIZE-1)))) { |
| /* zap any misaligned addresses. */ |
| /* SuSV3 says misaligned addresses only cause the MAP_FIXED case |
| to fail. Here, we catch them all. */ |
| SET_RESULT( -VKI_EINVAL ); |
| return; |
| } |
| |
| if (ARG4 & VKI_MAP_FIXED) { |
| if (!VG_(valid_client_addr)(ARG1, ARG2, tid, "mmap2")) |
| SET_RESULT( -VKI_ENOMEM ); |
| } else { |
| Addr a = VG_(find_map_space)(ARG1, ARG2, True); |
| if (a == 0 && ARG1 != 0) |
| ARG1 = VG_(find_map_space)(0, ARG2, True); |
| else |
| ARG1 = a; |
| if (ARG1 == 0) |
| SET_RESULT( -VKI_ENOMEM ); |
| else |
| ARG4 |= VKI_MAP_FIXED; |
| } |
| } |
| |
| POST(sys_mmap2) |
| { |
| vg_assert(VG_(valid_client_addr)(RES, ARG2, tid, "mmap2")); |
| mmap_segment( (Addr)RES, ARG2, ARG3, ARG4, ARG5, |
| ARG6 * (ULong)VKI_PAGE_SIZE ); |
| } |
| |
| PRE(sys_mprotect, 0) |
| { |
| PRINT("sys_mprotect ( %p, %llu, %d )", ARG1,(ULong)ARG2,ARG3); |
| PRE_REG_READ3(long, "mprotect", |
| unsigned long, addr, vki_size_t, len, unsigned long, prot); |
| |
| if (!VG_(valid_client_addr)(ARG1, ARG2, tid, "mprotect")) |
| SET_RESULT( -VKI_ENOMEM ); |
| } |
| |
| POST(sys_mprotect) |
| { |
| Addr a = ARG1; |
| SizeT len = ARG2; |
| Int prot = ARG3; |
| Bool rr = prot & VKI_PROT_READ; |
| Bool ww = prot & VKI_PROT_WRITE; |
| Bool xx = prot & VKI_PROT_EXEC; |
| |
| mash_addr_and_len(&a, &len); |
| VG_(mprotect_range)(a, len, prot); |
| VG_TRACK( change_mem_mprotect, a, len, rr, ww, xx ); |
| } |
| |
| PRE(sys_munmap, 0) |
| { |
| PRINT("sys_munmap ( %p, %llu )", ARG1,(ULong)ARG2); |
| PRE_REG_READ2(long, "munmap", unsigned long, start, vki_size_t, length); |
| |
| if (!VG_(valid_client_addr)(ARG1, ARG2, tid, "munmap")) |
| SET_RESULT( -VKI_EINVAL ); |
| } |
| |
| POST(sys_munmap) |
| { |
| Addr a = ARG1; |
| SizeT len = ARG2; |
| |
| mash_addr_and_len(&a, &len); |
| VG_(unmap_range)(a, len); |
| VG_TRACK( die_mem_munmap, a, len ); |
| } |
| |
| PRE(sys_mincore, 0) |
| { |
| PRINT("sys_mincore ( %p, %llu, %p )", ARG1,(ULong)ARG2,ARG3); |
| PRE_REG_READ3(long, "mincore", |
| unsigned long, start, vki_size_t, length, |
| unsigned char *, vec); |
| PRE_MEM_WRITE( "mincore(vec)", ARG3, (ARG2 + 4096 - 1) / 4096); |
| } |
| |
| POST(sys_mincore) |
| { |
| POST_MEM_WRITE( ARG3, (ARG2 + 4096 - 1) / 4096 ); |
| } |
| |
| PRE(sys_nanosleep, MayBlock|PostOnFail) |
| { |
| PRINT("sys_nanosleep ( %p, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "nanosleep", |
| struct timespec *, req, struct timespec *, rem); |
| PRE_MEM_READ( "nanosleep(req)", ARG1, sizeof(struct vki_timespec) ); |
| if (ARG2 != 0) |
| PRE_MEM_WRITE( "nanosleep(rem)", ARG2, sizeof(struct vki_timespec) ); |
| } |
| |
| POST(sys_nanosleep) |
| { |
| if (ARG2 != 0 && RES == -VKI_EINTR) |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_timespec) ); |
| } |
| |
| PRE(sys_open, MayBlock) |
| { |
| if (ARG2 & VKI_O_CREAT) { |
| // 3-arg version |
| PRINT("sys_open ( %p(%s), %d, %d )",ARG1,ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "open", |
| const char *, filename, int, flags, int, mode); |
| } else { |
| // 2-arg version |
| PRINT("sys_open ( %p(%s), %d )",ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "open", |
| const char *, filename, int, flags); |
| } |
| PRE_MEM_RASCIIZ( "open(filename)", ARG1 ); |
| } |
| |
| POST(sys_open) |
| { |
| if (!VG_(fd_allowed)(RES, "open", tid, True)) { |
| VG_(close)(RES); |
| SET_RESULT( -VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, RES, VG_(arena_strdup)(VG_AR_CORE, (Char*)ARG1)); |
| } |
| } |
| |
| PRE(sys_read, MayBlock) |
| { |
| PRINT("sys_read ( %d, %p, %llu )", ARG1, ARG2, (ULong)ARG3); |
| PRE_REG_READ3(ssize_t, "read", |
| unsigned int, fd, char *, buf, vki_size_t, count); |
| |
| if (!VG_(fd_allowed)(ARG1, "read", tid, False)) |
| SET_RESULT( -VKI_EBADF ); |
| else |
| PRE_MEM_WRITE( "read(buf)", ARG2, ARG3 ); |
| } |
| |
| POST(sys_read) |
| { |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_write, MayBlock) |
| { |
| PRINT("sys_write ( %d, %p, %llu )", ARG1, ARG2, (ULong)ARG3); |
| PRE_REG_READ3(ssize_t, "write", |
| unsigned int, fd, const char *, buf, vki_size_t, count); |
| if (!VG_(fd_allowed)(ARG1, "write", tid, False)) |
| SET_RESULT( -VKI_EBADF ); |
| else |
| PRE_MEM_READ( "write(buf)", ARG2, ARG3 ); |
| } |
| |
| PRE(sys_creat, MayBlock) |
| { |
| PRINT("sys_creat ( %p(%s), %d )", ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "creat", const char *, pathname, int, mode); |
| PRE_MEM_RASCIIZ( "creat(pathname)", ARG1 ); |
| } |
| |
| POST(sys_creat) |
| { |
| if (!VG_(fd_allowed)(RES, "creat", tid, True)) { |
| VG_(close)(RES); |
| SET_RESULT( -VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, RES, VG_(arena_strdup)(VG_AR_CORE, (Char*)ARG1)); |
| } |
| } |
| |
| // XXX: sort of x86-specific |
| PRE(sys_pipe, 0) |
| { |
| PRINT("sys_pipe ( %p )", ARG1); |
| PRE_REG_READ1(int, "pipe", unsigned long *, filedes); |
| PRE_MEM_WRITE( "pipe(filedes)", ARG1, 2*sizeof(long) ); |
| } |
| |
| POST(sys_pipe) |
| { |
| Int *p = (Int *)ARG1; |
| |
| if (!VG_(fd_allowed)(p[0], "pipe", tid, True) || |
| !VG_(fd_allowed)(p[1], "pipe", tid, True)) { |
| VG_(close)(p[0]); |
| VG_(close)(p[1]); |
| SET_RESULT( -VKI_EMFILE ); |
| } else { |
| POST_MEM_WRITE( ARG1, 2*sizeof(int) ); |
| if (VG_(clo_track_fds)) { |
| VG_(record_fd_open)(tid, p[0], NULL); |
| VG_(record_fd_open)(tid, p[1], NULL); |
| } |
| } |
| } |
| |
| // XXX: x86-specific, due to pollfd struct |
| PRE(sys_poll, MayBlock) |
| { |
| /* struct pollfd { |
| int fd; -- file descriptor |
| short events; -- requested events |
| short revents; -- returned events |
| }; |
| int poll(struct pollfd *ufds, unsigned int nfds, int timeout) |
| */ |
| UInt i; |
| struct vki_pollfd* ufds = (struct vki_pollfd *)ARG1; |
| PRINT("sys_poll ( %p, %d, %d )\n", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "poll", |
| struct pollfd *, ufds, unsigned int, nfds, long, timeout); |
| |
| for (i = 0; i < ARG2; i++) { |
| // 'fd' and 'events' field are inputs; 'revents' is output. |
| // XXX: this is x86 specific -- the pollfd struct varies across |
| // different architectures. |
| PRE_MEM_READ( "poll(ufds)", |
| (Addr)(&ufds[i]), sizeof(int) + sizeof(short) ); |
| PRE_MEM_WRITE( "poll(ufds)", (Addr)(&ufds[i].revents), sizeof(short) ); |
| } |
| } |
| |
| POST(sys_poll) |
| { |
| if (RES > 0) { |
| UInt i; |
| struct vki_pollfd* ufds = (struct vki_pollfd *)ARG1; |
| // XXX: again, this is x86-specific |
| for (i = 0; i < ARG2; i++) |
| POST_MEM_WRITE( (Addr)(&ufds[i].revents), sizeof(Short) ); |
| } |
| } |
| |
| PRE(sys_readlink, Special) |
| { |
| int saved = SYSNO; |
| PRINT("sys_readlink ( %p, %p, %llu )", ARG1,ARG2,(ULong)ARG3); |
| PRE_REG_READ3(long, "readlink", |
| const char *, path, char *, buf, int, bufsiz); |
| PRE_MEM_RASCIIZ( "readlink(path)", ARG1 ); |
| PRE_MEM_WRITE( "readlink(buf)", ARG2,ARG3 ); |
| |
| /* |
| * Handle the case where readlink is looking at /proc/self/exe or |
| * /proc/<pid>/exe. |
| */ |
| |
| SET_RESULT( VG_(do_syscall3)(saved, ARG1, ARG2, ARG3)); |
| if ((Int)RES == -2) { |
| char name[25]; |
| |
| VG_(sprintf)(name, "/proc/%d/exe", VG_(getpid)()); |
| |
| if (VG_(strcmp)((Char *)ARG1, name) == 0 || |
| VG_(strcmp)((Char *)ARG1, "/proc/self/exe") == 0) { |
| VG_(sprintf)(name, "/proc/self/fd/%d", VG_(clexecfd)); |
| SET_RESULT( VG_(do_syscall3)(saved, (UWord)name, ARG2, ARG3)); |
| } |
| } |
| |
| if ((Int)RES > 0) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_readv, MayBlock) |
| { |
| Int i; |
| struct vki_iovec * vec; |
| PRINT("sys_readv ( %d, %p, %llu )",ARG1,ARG2,(ULong)ARG3); |
| PRE_REG_READ3(ssize_t, "readv", |
| unsigned long, fd, const struct iovec *, vector, |
| unsigned long, count); |
| if (!VG_(fd_allowed)(ARG1, "readv", tid, False)) { |
| SET_RESULT( -VKI_EBADF ); |
| } else { |
| PRE_MEM_READ( "readv(vector)", ARG2, ARG3 * sizeof(struct vki_iovec) ); |
| |
| if (ARG2 != 0) { |
| /* ToDo: don't do any of the following if the vector is invalid */ |
| vec = (struct vki_iovec *)ARG2; |
| for (i = 0; i < (Int)ARG3; i++) |
| PRE_MEM_WRITE( "readv(vector[...])", |
| (Addr)vec[i].iov_base, vec[i].iov_len ); |
| } |
| } |
| } |
| |
| POST(sys_readv) |
| { |
| if (RES > 0) { |
| Int i; |
| struct vki_iovec * vec = (struct vki_iovec *)ARG2; |
| Int remains = RES; |
| |
| /* RES holds the number of bytes read. */ |
| for (i = 0; i < (Int)ARG3; i++) { |
| Int nReadThisBuf = vec[i].iov_len; |
| if (nReadThisBuf > remains) nReadThisBuf = remains; |
| POST_MEM_WRITE( (Addr)vec[i].iov_base, nReadThisBuf ); |
| remains -= nReadThisBuf; |
| if (remains < 0) VG_(core_panic)("readv: remains < 0"); |
| } |
| } |
| } |
| |
| PRE(sys_rename, 0) |
| { |
| PRINT("sys_rename ( %p, %p )", ARG1, ARG2 ); |
| PRE_REG_READ2(long, "rename", const char *, oldpath, const char *, newpath); |
| PRE_MEM_RASCIIZ( "rename(oldpath)", ARG1 ); |
| PRE_MEM_RASCIIZ( "rename(newpath)", ARG2 ); |
| } |
| |
| PRE(sys_rmdir, MayBlock) |
| { |
| PRINT("sys_rmdir ( %p )", ARG1); |
| PRE_REG_READ1(long, "rmdir", const char *, pathname); |
| PRE_MEM_RASCIIZ( "rmdir(pathname)", ARG1 ); |
| } |
| |
| PRE(sys_sched_setparam, 0) |
| { |
| PRINT("sched_setparam ( %d, %p )", ARG1, ARG2 ); |
| PRE_REG_READ2(long, "sched_setparam", |
| vki_pid_t, pid, struct sched_param *, p); |
| PRE_MEM_READ( "sched_setparam(p)", ARG2, sizeof(struct vki_sched_param) ); |
| } |
| |
| POST(sys_sched_setparam) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_sched_param) ); |
| } |
| |
| PRE(sys_sched_getparam, 0) |
| { |
| PRINT("sched_getparam ( %d, %p )", ARG1, ARG2 ); |
| PRE_REG_READ2(long, "sched_getparam", |
| vki_pid_t, pid, struct sched_param *, p); |
| PRE_MEM_WRITE( "sched_getparam(p)", ARG2, sizeof(struct vki_sched_param) ); |
| } |
| |
| POST(sys_sched_getparam) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_sched_param) ); |
| } |
| |
| PRE(sys_select, MayBlock) |
| { |
| PRINT("sys_select ( %d, %p, %p, %p, %p )", ARG1,ARG2,ARG3,ARG4,ARG5); |
| PRE_REG_READ5(long, "select", |
| int, n, vki_fd_set *, readfds, vki_fd_set *, writefds, |
| vki_fd_set *, exceptfds, struct timeval *, timeout); |
| // XXX: this possibly understates how much memory is read. |
| if (ARG2 != 0) |
| PRE_MEM_READ( "select(readfds)", |
| ARG2, ARG1/8 /* __FD_SETSIZE/8 */ ); |
| if (ARG3 != 0) |
| PRE_MEM_READ( "select(writefds)", |
| ARG3, ARG1/8 /* __FD_SETSIZE/8 */ ); |
| if (ARG4 != 0) |
| PRE_MEM_READ( "select(exceptfds)", |
| ARG4, ARG1/8 /* __FD_SETSIZE/8 */ ); |
| if (ARG5 != 0) |
| PRE_MEM_READ( "select(timeout)", ARG5, sizeof(struct vki_timeval) ); |
| } |
| |
| PRE(sys_setgid16, 0) |
| { |
| PRINT("sys_setgid16 ( %d )", ARG1); |
| PRE_REG_READ1(long, "setgid16", vki_old_gid_t, gid); |
| } |
| |
| PRE(sys_setgid, 0) |
| { |
| PRINT("sys_setgid ( %d )", ARG1); |
| PRE_REG_READ1(long, "setgid", vki_gid_t, gid); |
| } |
| |
| PRE(sys_setsid, 0) |
| { |
| PRINT("sys_setsid ( )"); |
| PRE_REG_READ0(long, "setsid"); |
| } |
| |
| PRE(sys_setgroups16, 0) |
| { |
| PRINT("sys_setgroups16 ( %llu, %p )", (ULong)ARG1, ARG2); |
| PRE_REG_READ2(long, "setgroups16", int, size, vki_old_gid_t *, list); |
| if (ARG1 > 0) |
| PRE_MEM_READ( "setgroups16(list)", ARG2, ARG1 * sizeof(vki_old_gid_t) ); |
| } |
| |
| PRE(sys_setgroups, 0) |
| { |
| PRINT("setgroups ( %llu, %p )", (ULong)ARG1, ARG2); |
| PRE_REG_READ2(long, "setgroups", int, size, vki_gid_t *, list); |
| if (ARG1 > 0) |
| PRE_MEM_READ( "setgroups(list)", ARG2, ARG1 * sizeof(vki_gid_t) ); |
| } |
| |
| PRE(sys_setpgid, 0) |
| { |
| PRINT("setpgid ( %d, %d )", ARG1, ARG2); |
| PRE_REG_READ2(long, "setpgid", vki_pid_t, pid, vki_pid_t, pgid); |
| } |
| |
| PRE(sys_setregid, 0) |
| { |
| PRINT("sys_setregid ( %d, %d )", ARG1, ARG2); |
| PRE_REG_READ2(long, "setregid", vki_gid_t, rgid, vki_gid_t, egid); |
| } |
| |
| PRE(sys_setreuid16, 0) |
| { |
| PRINT("setreuid16 ( 0x%x, 0x%x )", ARG1, ARG2); |
| PRE_REG_READ2(long, "setreuid16", vki_old_uid_t, ruid, vki_old_uid_t, euid); |
| } |
| |
| PRE(sys_setreuid, 0) |
| { |
| PRINT("sys_setreuid ( 0x%x, 0x%x )", ARG1, ARG2); |
| PRE_REG_READ2(long, "setreuid", vki_uid_t, ruid, vki_uid_t, euid); |
| } |
| |
| PRE(sys_setrlimit, 0) |
| { |
| PRINT("sys_setrlimit ( %d, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "setrlimit", |
| unsigned int, resource, struct rlimit *, rlim); |
| PRE_MEM_READ( "setrlimit(rlim)", ARG2, sizeof(struct vki_rlimit) ); |
| |
| if (ARG1 == VKI_RLIMIT_NOFILE) { |
| if (((struct vki_rlimit *)ARG2)->rlim_cur > VG_(fd_hard_limit) || |
| ((struct vki_rlimit *)ARG2)->rlim_max != VG_(fd_hard_limit)) { |
| SET_RESULT( -VKI_EPERM ); |
| } |
| else { |
| VG_(fd_soft_limit) = ((struct vki_rlimit *)ARG2)->rlim_cur; |
| SET_RESULT( 0 ); |
| } |
| } |
| else if (ARG1 == VKI_RLIMIT_DATA) { |
| if (((struct vki_rlimit *)ARG2)->rlim_cur > ((struct vki_rlimit *)ARG2)->rlim_max || |
| ((struct vki_rlimit *)ARG2)->rlim_max > ((struct vki_rlimit *)ARG2)->rlim_max) { |
| SET_RESULT( -VKI_EPERM ); |
| } |
| else { |
| VG_(client_rlimit_data) = *(struct vki_rlimit *)ARG2; |
| SET_RESULT( 0 ); |
| } |
| } |
| else if (ARG1 == VKI_RLIMIT_STACK && tid == 1) { |
| if (((struct vki_rlimit *)ARG2)->rlim_cur > ((struct vki_rlimit *)ARG2)->rlim_max || |
| ((struct vki_rlimit *)ARG2)->rlim_max > ((struct vki_rlimit *)ARG2)->rlim_max) { |
| SET_RESULT( -VKI_EPERM ); |
| } |
| else { |
| VG_(threads)[tid].client_stack_szB = ((struct vki_rlimit *)ARG2)->rlim_cur; |
| VG_(client_rlimit_stack) = *(struct vki_rlimit *)ARG2; |
| SET_RESULT( 0 ); |
| } |
| } |
| } |
| |
| PRE(sys_setuid16, 0) |
| { |
| PRINT("sys_setuid16 ( %d )", ARG1); |
| PRE_REG_READ1(long, "setuid16", vki_old_uid_t, uid); |
| } |
| |
| PRE(sys_setuid, 0) |
| { |
| PRINT("sys_setuid ( %d )", ARG1); |
| PRE_REG_READ1(long, "setuid", vki_uid_t, uid); |
| } |
| |
| PRE(sys_socketcall, MayBlock) |
| { |
| # define ARG2_0 (((UWord*)ARG2)[0]) |
| # define ARG2_1 (((UWord*)ARG2)[1]) |
| # define ARG2_2 (((UWord*)ARG2)[2]) |
| # define ARG2_3 (((UWord*)ARG2)[3]) |
| # define ARG2_4 (((UWord*)ARG2)[4]) |
| # define ARG2_5 (((UWord*)ARG2)[5]) |
| |
| PRINT("sys_socketcall ( %d, %p )",ARG1,ARG2); |
| PRE_REG_READ2(long, "socketcall", int, call, unsigned long *, args); |
| |
| switch (ARG1 /* request */) { |
| |
| case VKI_SYS_SOCKETPAIR: |
| /* int socketpair(int d, int type, int protocol, int sv[2]); */ |
| PRE_MEM_READ( "socketcall.socketpair(args)", ARG2, 4*sizeof(Addr) ); |
| VG_(generic_PRE_sys_socketpair)( tid, ARG2_0, ARG2_1, ARG2_2, ARG2_3 ); |
| break; |
| |
| case VKI_SYS_SOCKET: |
| /* int socket(int domain, int type, int protocol); */ |
| PRE_MEM_READ( "socketcall.socket(args)", ARG2, 3*sizeof(Addr) ); |
| break; |
| |
| case VKI_SYS_BIND: |
| /* int bind(int sockfd, struct sockaddr *my_addr, |
| int addrlen); */ |
| PRE_MEM_READ( "socketcall.bind(args)", ARG2, 3*sizeof(Addr) ); |
| VG_(generic_PRE_sys_bind)( tid, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_LISTEN: |
| /* int listen(int s, int backlog); */ |
| PRE_MEM_READ( "socketcall.listen(args)", ARG2, 2*sizeof(Addr) ); |
| break; |
| |
| case VKI_SYS_ACCEPT: { |
| /* int accept(int s, struct sockaddr *addr, int *addrlen); */ |
| PRE_MEM_READ( "socketcall.accept(args)", ARG2, 3*sizeof(Addr) ); |
| VG_(generic_PRE_sys_accept)( tid, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| } |
| |
| case VKI_SYS_SENDTO: |
| /* int sendto(int s, const void *msg, int len, |
| unsigned int flags, |
| const struct sockaddr *to, int tolen); */ |
| PRE_MEM_READ( "socketcall.sendto(args)", ARG2, 6*sizeof(Addr) ); |
| VG_(generic_PRE_sys_sendto)( tid, ARG2_0, ARG2_1, ARG2_2, |
| ARG2_3, ARG2_4, ARG2_5 ); |
| break; |
| |
| case VKI_SYS_SEND: |
| /* int send(int s, const void *msg, size_t len, int flags); */ |
| PRE_MEM_READ( "socketcall.send(args)", ARG2, 4*sizeof(Addr) ); |
| VG_(generic_PRE_sys_send)( tid, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_RECVFROM: |
| /* int recvfrom(int s, void *buf, int len, unsigned int flags, |
| struct sockaddr *from, int *fromlen); */ |
| PRE_MEM_READ( "socketcall.recvfrom(args)", ARG2, 6*sizeof(Addr) ); |
| VG_(generic_PRE_sys_recvfrom)( tid, ARG2_0, ARG2_1, ARG2_2, |
| ARG2_3, ARG2_4, ARG2_5 ); |
| break; |
| |
| case VKI_SYS_RECV: |
| /* int recv(int s, void *buf, int len, unsigned int flags); */ |
| /* man 2 recv says: |
| The recv call is normally used only on a connected socket |
| (see connect(2)) and is identical to recvfrom with a NULL |
| from parameter. |
| */ |
| PRE_MEM_READ( "socketcall.recv(args)", ARG2, 4*sizeof(Addr) ); |
| VG_(generic_PRE_sys_recv)( tid, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_CONNECT: |
| /* int connect(int sockfd, |
| struct sockaddr *serv_addr, int addrlen ); */ |
| PRE_MEM_READ( "socketcall.connect(args)", ARG2, 3*sizeof(Addr) ); |
| VG_(generic_PRE_sys_connect)( tid, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_SETSOCKOPT: |
| /* int setsockopt(int s, int level, int optname, |
| const void *optval, int optlen); */ |
| PRE_MEM_READ( "socketcall.setsockopt(args)", ARG2, 5*sizeof(Addr) ); |
| VG_(generic_PRE_sys_setsockopt)( tid, ARG2_0, ARG2_1, ARG2_2, |
| ARG2_3, ARG2_4 ); |
| break; |
| |
| case VKI_SYS_GETSOCKOPT: |
| /* int getsockopt(int s, int level, int optname, |
| void *optval, socklen_t *optlen); */ |
| PRE_MEM_READ( "socketcall.getsockopt(args)", ARG2, 5*sizeof(Addr) ); |
| VG_(generic_PRE_sys_getsockopt)( tid, ARG2_0, ARG2_1, ARG2_2, |
| ARG2_3, ARG2_4 ); |
| break; |
| |
| case VKI_SYS_GETSOCKNAME: |
| /* int getsockname(int s, struct sockaddr* name, int* namelen) */ |
| PRE_MEM_READ( "socketcall.getsockname(args)", ARG2, 3*sizeof(Addr) ); |
| VG_(generic_PRE_sys_getsockname)( tid, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_GETPEERNAME: |
| /* int getpeername(int s, struct sockaddr* name, int* namelen) */ |
| PRE_MEM_READ( "socketcall.getpeername(args)", ARG2, 3*sizeof(Addr) ); |
| VG_(generic_PRE_sys_getpeername)( tid, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_SHUTDOWN: |
| /* int shutdown(int s, int how); */ |
| PRE_MEM_READ( "socketcall.shutdown(args)", ARG2, 2*sizeof(Addr) ); |
| break; |
| |
| case VKI_SYS_SENDMSG: { |
| /* int sendmsg(int s, const struct msghdr *msg, int flags); */ |
| |
| /* this causes warnings, and I don't get why. glibc bug? |
| * (after all it's glibc providing the arguments array) |
| PRE_MEM_READ( "socketcall.sendmsg(args)", ARG2, 3*sizeof(Addr) ); |
| */ |
| VG_(generic_PRE_sys_sendmsg)( tid, ARG2_0, ARG2_1 ); |
| break; |
| } |
| |
| case VKI_SYS_RECVMSG: { |
| /* int recvmsg(int s, struct msghdr *msg, int flags); */ |
| |
| /* this causes warnings, and I don't get why. glibc bug? |
| * (after all it's glibc providing the arguments array) |
| PRE_MEM_READ("socketcall.recvmsg(args)", ARG2, 3*sizeof(Addr) ); |
| */ |
| VG_(generic_PRE_sys_recvmsg)( tid, ARG2_0, ARG2_1 ); |
| break; |
| } |
| |
| default: |
| VG_(message)(Vg_DebugMsg,"Warning: unhandled socketcall 0x%x",ARG1); |
| SET_RESULT( -VKI_EINVAL ); |
| break; |
| } |
| # undef ARG2_0 |
| # undef ARG2_1 |
| # undef ARG2_2 |
| # undef ARG2_3 |
| # undef ARG2_4 |
| # undef ARG2_5 |
| } |
| |
| POST(sys_socketcall) |
| { |
| # define ARG2_0 (((UWord*)ARG2)[0]) |
| # define ARG2_1 (((UWord*)ARG2)[1]) |
| # define ARG2_2 (((UWord*)ARG2)[2]) |
| # define ARG2_3 (((UWord*)ARG2)[3]) |
| # define ARG2_4 (((UWord*)ARG2)[4]) |
| # define ARG2_5 (((UWord*)ARG2)[5]) |
| |
| UWord r; |
| switch (ARG1 /* request */) { |
| |
| case VKI_SYS_SOCKETPAIR: |
| VG_(generic_POST_sys_socketpair)( tid, RES, ARG2_0, |
| ARG2_1, ARG2_2, ARG2_3 ); |
| break; |
| |
| case VKI_SYS_SOCKET: |
| r = VG_(generic_POST_sys_socket)( tid, RES ); |
| SET_RESULT(r); |
| break; |
| |
| case VKI_SYS_BIND: |
| /* int bind(int sockfd, struct sockaddr *my_addr, |
| int addrlen); */ |
| break; |
| |
| case VKI_SYS_LISTEN: |
| /* int listen(int s, int backlog); */ |
| break; |
| |
| case VKI_SYS_ACCEPT: |
| /* int accept(int s, struct sockaddr *addr, int *addrlen); */ |
| r = VG_(generic_POST_sys_accept)( tid, RES, ARG2_0, ARG2_1, ARG2_2 ); |
| SET_RESULT(r); |
| break; |
| |
| case VKI_SYS_SENDTO: |
| break; |
| |
| case VKI_SYS_SEND: |
| break; |
| |
| case VKI_SYS_RECVFROM: |
| VG_(generic_POST_sys_recvfrom)( tid, RES, ARG2_0, ARG2_1, ARG2_2, |
| ARG2_3, ARG2_4, ARG2_5 ); |
| break; |
| |
| case VKI_SYS_RECV: |
| VG_(generic_POST_sys_recv)( tid, RES, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_CONNECT: |
| break; |
| |
| case VKI_SYS_SETSOCKOPT: |
| break; |
| |
| case VKI_SYS_GETSOCKOPT: |
| VG_(generic_POST_sys_getsockopt)( tid, RES, ARG2_0, ARG2_1, |
| ARG2_2, ARG2_3, ARG2_4 ); |
| break; |
| |
| case VKI_SYS_GETSOCKNAME: |
| VG_(generic_POST_sys_getsockname)( tid, RES, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_GETPEERNAME: |
| VG_(generic_POST_sys_getpeername)( tid, RES, ARG2_0, ARG2_1, ARG2_2 ); |
| break; |
| |
| case VKI_SYS_SHUTDOWN: |
| break; |
| |
| case VKI_SYS_SENDMSG: |
| break; |
| |
| case VKI_SYS_RECVMSG: |
| VG_(generic_POST_sys_recvmsg)( tid, RES, ARG2_0, ARG2_1 ); |
| break; |
| |
| default: |
| VG_(message)(Vg_DebugMsg,"FATAL: unhandled socketcall 0x%x",ARG1); |
| VG_(core_panic)("... bye!\n"); |
| break; /*NOTREACHED*/ |
| } |
| # undef ARG2_0 |
| # undef ARG2_1 |
| # undef ARG2_2 |
| # undef ARG2_3 |
| # undef ARG2_4 |
| # undef ARG2_5 |
| } |
| |
| PRE(sys_newstat, 0) |
| { |
| PRINT("sys_newstat ( %p(%s), %p )", ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "stat", char *, file_name, struct stat *, buf); |
| PRE_MEM_RASCIIZ( "stat(file_name)", ARG1 ); |
| PRE_MEM_WRITE( "stat(buf)", ARG2, sizeof(struct vki_stat) ); |
| } |
| |
| POST(sys_newstat) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_stat) ); |
| } |
| |
| PRE(sys_statfs, 0) |
| { |
| PRINT("sys_statfs ( %p, %p )",ARG1,ARG2); |
| PRE_REG_READ2(long, "statfs", const char *, path, struct statfs *, buf); |
| PRE_MEM_RASCIIZ( "statfs(path)", ARG1 ); |
| PRE_MEM_WRITE( "statfs(buf)", ARG2, sizeof(struct vki_statfs) ); |
| } |
| |
| POST(sys_statfs) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_statfs) ); |
| } |
| |
| PRE(sys_statfs64, 0) |
| { |
| PRINT("sys_statfs64 ( %p, %llu, %p )",ARG1,(ULong)ARG2,ARG3); |
| PRE_REG_READ3(long, "statfs64", |
| const char *, path, vki_size_t, size, struct statfs64 *, buf); |
| PRE_MEM_RASCIIZ( "statfs64(path)", ARG1 ); |
| PRE_MEM_WRITE( "statfs64(buf)", ARG3, ARG2 ); |
| } |
| |
| POST(sys_statfs64) |
| { |
| POST_MEM_WRITE( ARG3, ARG2 ); |
| } |
| |
| PRE(sys_symlink, MayBlock) |
| { |
| PRINT("sys_symlink ( %p, %p )",ARG1,ARG2); |
| PRE_REG_READ2(long, "symlink", const char *, oldpath, const char *, newpath); |
| PRE_MEM_RASCIIZ( "symlink(oldpath)", ARG1 ); |
| PRE_MEM_RASCIIZ( "symlink(newpath)", ARG2 ); |
| } |
| |
| // See comment above PRE(sys_lstat64) for an explanation of this #ifdef. |
| #ifndef __amd64__ |
| PRE(sys_stat64, 0) |
| { |
| PRINT("sys_stat64 ( %p, %p )",ARG1,ARG2); |
| PRE_REG_READ2(long, "stat64", char *, file_name, struct stat64 *, buf); |
| PRE_MEM_RASCIIZ( "stat64(file_name)", ARG1 ); |
| PRE_MEM_WRITE( "stat64(buf)", ARG2, sizeof(struct vki_stat64) ); |
| } |
| |
| POST(sys_stat64) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) ); |
| } |
| |
| PRE(sys_fstat64, 0) |
| { |
| PRINT("sys_fstat64 ( %d, %p )",ARG1,ARG2); |
| PRE_REG_READ2(long, "fstat64", unsigned long, fd, struct stat64 *, buf); |
| PRE_MEM_WRITE( "fstat64(buf)", ARG2, sizeof(struct vki_stat64) ); |
| } |
| |
| POST(sys_fstat64) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_stat64) ); |
| } |
| #endif |
| |
| PRE(sys_time, 0) |
| { |
| /* time_t time(time_t *t); */ |
| PRINT("sys_time ( %p )",ARG1); |
| PRE_REG_READ1(long, "time", int *, t); |
| if (ARG1 != 0) { |
| PRE_MEM_WRITE( "time(t)", ARG1, sizeof(vki_time_t) ); |
| } |
| } |
| |
| POST(sys_time) |
| { |
| if (ARG1 != 0) { |
| POST_MEM_WRITE( ARG1, sizeof(vki_time_t) ); |
| } |
| } |
| |
| PRE(sys_times, 0) |
| { |
| PRINT("sys_times ( %p )", ARG1); |
| PRE_REG_READ1(long, "times", struct tms *, buf); |
| PRE_MEM_WRITE( "times(buf)", ARG1, sizeof(struct vki_tms) ); |
| } |
| |
| POST(sys_times) |
| { |
| if (ARG1 != 0) { |
| POST_MEM_WRITE( ARG1, sizeof(struct vki_tms) ); |
| } |
| } |
| |
| PRE(sys_umask, 0) |
| { |
| PRINT("sys_umask ( %d )", ARG1); |
| PRE_REG_READ1(long, "umask", int, mask); |
| } |
| |
| PRE(sys_unlink, MayBlock) |
| { |
| PRINT("sys_unlink ( %p(%s) )", ARG1,ARG1); |
| PRE_REG_READ1(long, "unlink", const char *, pathname); |
| PRE_MEM_RASCIIZ( "unlink(pathname)", ARG1 ); |
| } |
| |
| PRE(sys_newuname, 0) |
| { |
| PRINT("sys_newuname ( %p )", ARG1); |
| PRE_REG_READ1(long, "uname", struct new_utsname *, buf); |
| PRE_MEM_WRITE( "uname(buf)", ARG1, sizeof(struct vki_new_utsname) ); |
| } |
| |
| POST(sys_newuname) |
| { |
| if (ARG1 != 0) { |
| POST_MEM_WRITE( ARG1, sizeof(struct vki_new_utsname) ); |
| } |
| } |
| |
| PRE(sys_utime, MayBlock) |
| { |
| PRINT("sys_utime ( %p, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "utime", char *, filename, struct utimbuf *, buf); |
| PRE_MEM_RASCIIZ( "utime(filename)", ARG1 ); |
| if (ARG2 != 0) |
| PRE_MEM_READ( "utime(buf)", ARG2, sizeof(struct vki_utimbuf) ); |
| } |
| |
| PRE(sys_waitpid, MayBlock) |
| { |
| PRINT("sys_waitpid ( %d, %p, %d )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "waitpid", |
| vki_pid_t, pid, unsigned int *, status, int, options); |
| |
| if (ARG2 != (Addr)NULL) |
| PRE_MEM_WRITE( "waitpid(status)", ARG2, sizeof(int) ); |
| } |
| |
| POST(sys_waitpid) |
| { |
| if (ARG2 != (Addr)NULL) |
| POST_MEM_WRITE( ARG2, sizeof(int) ); |
| } |
| |
| PRE(sys_wait4, MayBlock) |
| { |
| PRINT("sys_wait4 ( %d, %p, %d, %p )", ARG1,ARG2,ARG3,ARG4); |
| |
| PRE_REG_READ4(long, "wait4", |
| vki_pid_t, pid, unsigned int *, status, int, options, |
| struct rusage *, rusage); |
| if (ARG2 != (Addr)NULL) |
| PRE_MEM_WRITE( "wait4(status)", ARG2, sizeof(int) ); |
| if (ARG4 != (Addr)NULL) |
| PRE_MEM_WRITE( "wait4(rusage)", ARG4, sizeof(struct vki_rusage) ); |
| } |
| |
| POST(sys_wait4) |
| { |
| if (ARG2 != (Addr)NULL) |
| POST_MEM_WRITE( ARG2, sizeof(int) ); |
| if (ARG4 != (Addr)NULL) |
| POST_MEM_WRITE( ARG4, sizeof(struct vki_rusage) ); |
| } |
| |
| PRE(sys_writev, MayBlock) |
| { |
| Int i; |
| struct vki_iovec * vec; |
| PRINT("sys_writev ( %d, %p, %llu )",ARG1,ARG2,(ULong)ARG3); |
| PRE_REG_READ3(ssize_t, "writev", |
| unsigned long, fd, const struct iovec *, vector, |
| unsigned long, count); |
| if (!VG_(fd_allowed)(ARG1, "writev", tid, False)) { |
| SET_RESULT( -VKI_EBADF ); |
| } else { |
| PRE_MEM_READ( "writev(vector)", |
| ARG2, ARG3 * sizeof(struct vki_iovec) ); |
| if (ARG2 != 0) { |
| /* ToDo: don't do any of the following if the vector is invalid */ |
| vec = (struct vki_iovec *)ARG2; |
| for (i = 0; i < (Int)ARG3; i++) |
| PRE_MEM_READ( "writev(vector[...])", |
| (Addr)vec[i].iov_base, vec[i].iov_len ); |
| } |
| } |
| } |
| |
| PRE(sys_utimes, 0) |
| { |
| PRINT("sys_utimes ( %p, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "utimes", char *, filename, struct timeval *, tvp); |
| PRE_MEM_RASCIIZ( "utimes(filename)", ARG1 ); |
| if (ARG2 != 0) |
| PRE_MEM_READ( "utimes(tvp)", ARG2, sizeof(struct vki_timeval) ); |
| } |
| |
| PRE(sys_sched_setaffinity, 0) |
| { |
| PRINT("sched_setaffinity ( %d, %d, %p )", ARG1, ARG2, ARG3); |
| PRE_REG_READ3(long, "sched_setaffinity", |
| vki_pid_t, pid, unsigned int, len, unsigned long *, mask); |
| PRE_MEM_READ( "sched_setaffinity(mask)", ARG3, ARG2); |
| } |
| |
| PRE(sys_sched_getaffinity, 0) |
| { |
| PRINT("sched_getaffinity ( %d, %d, %p )", ARG1, ARG2, ARG3); |
| PRE_REG_READ3(long, "sched_getaffinity", |
| vki_pid_t, pid, unsigned int, len, unsigned long *, mask); |
| PRE_MEM_WRITE( "sched_getaffinity(mask)", ARG3, ARG2); |
| } |
| |
| POST(sys_sched_getaffinity) |
| { |
| POST_MEM_WRITE(ARG3, ARG2); |
| } |
| |
| PRE(sys_acct, 0) |
| { |
| PRINT("sys_acct ( %p )", ARG1); |
| PRE_REG_READ1(long, "acct", const char *, filename); |
| PRE_MEM_RASCIIZ( "acct(filename)", ARG1 ); |
| } |
| |
| PRE(sys_pause, MayBlock) |
| { |
| PRINT("sys_pause ( )"); |
| PRE_REG_READ0(long, "pause"); |
| } |
| |
| // XXX: x86-specific |
| PRE(sys_sigsuspend, MayBlock) |
| { |
| /* The C library interface to sigsuspend just takes a pointer to |
| a signal mask but this system call has three arguments - the first |
| two don't appear to be used by the kernel and are always passed as |
| zero by glibc and the third is the first word of the signal mask |
| so only 32 signals are supported. |
| |
| In fact glibc normally uses rt_sigsuspend if it is available as |
| that takes a pointer to the signal mask so supports more signals. |
| */ |
| PRINT("sys_sigsuspend ( %d, %d, %d )", ARG1,ARG2,ARG3 ); |
| PRE_REG_READ3(int, "sigsuspend", |
| int, history0, int, history1, |
| vki_old_sigset_t, mask); |
| } |
| |
| // XXX: x86-specific |
| PRE(sys_rt_sigsuspend, MayBlock) |
| { |
| /* The C library interface to sigsuspend just takes a pointer to |
| a signal mask but this system call has two arguments - a pointer |
| to the mask and the number of bytes used by it. The kernel insists |
| on the size being equal to sizeof(sigset_t) however and will just |
| return EINVAL if it isn't. |
| */ |
| PRINT("sys_rt_sigsuspend ( %p, %d )", ARG1,ARG2 ); |
| PRE_REG_READ2(int, "rt_sigsuspend", vki_sigset_t *, mask, vki_size_t, size) |
| if (ARG1 != (Addr)NULL) { |
| PRE_MEM_READ( "rt_sigsuspend(mask)", ARG1, sizeof(vki_sigset_t) ); |
| } |
| } |
| |
| PRE(sys_rt_sigtimedwait, MayBlock) |
| { |
| PRINT("sys_rt_sigtimedwait ( %p, %p, %p, %lld )", |
| ARG1,ARG2,ARG3,(ULong)ARG4); |
| PRE_REG_READ4(long, "rt_sigtimedwait", |
| const vki_sigset_t *, set, vki_siginfo_t *, info, |
| const struct timespec *, timeout, vki_size_t, sigsetsize); |
| if (ARG1 != 0) |
| PRE_MEM_READ( "rt_sigtimedwait(set)", ARG1, sizeof(vki_sigset_t)); |
| if (ARG2 != 0) |
| PRE_MEM_WRITE( "rt_sigtimedwait(info)", ARG2, sizeof(vki_siginfo_t) ); |
| PRE_MEM_READ( "rt_sigtimedwait(timeout)", |
| ARG4, sizeof(struct vki_timespec) ); |
| } |
| |
| POST(sys_rt_sigtimedwait) |
| { |
| if (ARG2 != 0) |
| POST_MEM_WRITE( ARG2, sizeof(vki_siginfo_t) ); |
| } |
| |
| PRE(sys_rt_sigqueueinfo, 0) |
| { |
| PRINT("sys_rt_sigqueueinfo(%d, %d, %p)", ARG1, ARG2, ARG3); |
| PRE_REG_READ3(long, "rt_sigqueueinfo", |
| int, pid, int, sig, vki_siginfo_t *, uinfo); |
| if (ARG2 != 0) |
| PRE_MEM_READ( "rt_sigqueueinfo(uinfo)", ARG3, sizeof(vki_siginfo_t) ); |
| } |
| |
| POST(sys_rt_sigqueueinfo) |
| { |
| PRINT("sys_rt_sigqueueinfo(%d, %d, %p)", ARG1, ARG2, ARG3); |
| PRE_REG_READ3(long, "rt_sigqueueinfo", |
| int, pid, int, sig, vki_siginfo_t *, uinfo); |
| if (ARG2 != 0) |
| PRE_MEM_READ( "rt_sigqueueinfo(uinfo)", ARG3, sizeof(vki_siginfo_t) ); |
| if (!VG_(client_signal_OK)(ARG2)) |
| SET_RESULT( -VKI_EINVAL ); |
| } |
| |
| // XXX: x86-specific |
| PRE(sys_sigaltstack, Special) |
| { |
| /* int sigaltstack(const stack_t *ss, stack_t *oss); */ |
| PRINT("sigaltstack ( %p, %p )",ARG1,ARG2); |
| PRE_REG_READ2(int, "sigaltstack", |
| const vki_stack_t *, ss, vki_stack_t *, oss); |
| if (ARG1 != 0) { |
| PRE_MEM_READ( "sigaltstack(ss)", ARG1, sizeof(vki_stack_t) ); |
| } |
| if (ARG2 != 0) { |
| PRE_MEM_WRITE( "sigaltstack(oss)", ARG2, sizeof(vki_stack_t) ); |
| } |
| |
| SET_RESULT( VG_(do_sys_sigaltstack) (tid, (vki_stack_t*)ARG1, |
| (vki_stack_t*)ARG2) ); |
| } |
| |
| POST(sys_sigaltstack) |
| { |
| if (RES == 0 && ARG2 != 0) |
| POST_MEM_WRITE( ARG2, sizeof(vki_stack_t)); |
| } |
| |
| // XXX: x86-specific |
| PRE(sys_rt_sigaction, Special) |
| { |
| PRINT("sys_rt_sigaction ( %d, %p, %p, %d )", ARG1,ARG2,ARG3,ARG4); |
| PRE_REG_READ4(long, "rt_sigaction", |
| int, signum, const struct sigaction *, act, |
| struct sigaction *, oldact, vki_size_t, sigsetsize); |
| |
| if (ARG2 != 0) |
| PRE_MEM_READ( "rt_sigaction(act)", ARG2, sizeof(struct vki_sigaction)); |
| if (ARG3 != 0) |
| PRE_MEM_WRITE( "rt_sigaction(oldact)", ARG3, sizeof(struct vki_sigaction)); |
| |
| // XXX: doesn't seem right to be calling do_sys_sigaction for |
| // sys_rt_sigaction... perhaps this function should be renamed |
| // VG_(do_sys_rt_sigaction)() --njn |
| |
| SET_RESULT( |
| VG_(do_sys_sigaction)(ARG1, (const struct vki_sigaction *)ARG2, |
| (struct vki_sigaction *)ARG3) |
| ); |
| } |
| |
| POST(sys_rt_sigaction) |
| { |
| if (RES == 0 && ARG3 != 0) |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_sigaction)); |
| } |
| |
| // XXX: This syscall is not used on amd64 -- it only provides |
| // sys_rt_sigprocmask, which uses sigset_t rather than old_sigset_t. |
| // This wrapper is only suitable for 32-bit architectures. |
| #ifndef __amd64__ |
| PRE(sys_sigprocmask, Special) |
| { |
| vki_old_sigset_t* set; |
| vki_old_sigset_t* oldset; |
| vki_sigset_t bigger_set; |
| vki_sigset_t bigger_oldset; |
| |
| PRINT("sys_sigprocmask ( %d, %p, %p )",ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "sigprocmask", |
| int, how, vki_old_sigset_t *, set, vki_old_sigset_t *, oldset); |
| if (ARG2 != 0) |
| PRE_MEM_READ( "sigprocmask(set)", ARG2, sizeof(vki_old_sigset_t)); |
| if (ARG3 != 0) |
| PRE_MEM_WRITE( "sigprocmask(oldset)", ARG3, sizeof(vki_old_sigset_t)); |
| |
| // Nb: We must convert the smaller vki_old_sigset_t params into bigger |
| // vki_sigset_t params. |
| set = (vki_old_sigset_t*)ARG2; |
| oldset = (vki_old_sigset_t*)ARG3; |
| |
| VG_(memset)(&bigger_set, 0, sizeof(vki_sigset_t)); |
| VG_(memset)(&bigger_oldset, 0, sizeof(vki_sigset_t)); |
| if (set) |
| bigger_set.sig[0] = *(vki_old_sigset_t*)set; |
| |
| SET_RESULT( |
| VG_(do_sys_sigprocmask) ( tid, ARG1 /*how*/, |
| set ? &bigger_set : NULL, |
| oldset ? &bigger_oldset : NULL) |
| ); |
| |
| if (oldset) |
| *oldset = bigger_oldset.sig[0]; |
| } |
| |
| POST(sys_sigprocmask) |
| { |
| if (RES == 0 && ARG3 != 0) |
| POST_MEM_WRITE( ARG3, sizeof(vki_old_sigset_t)); |
| } |
| #endif |
| |
| PRE(sys_rt_sigprocmask, Special) |
| { |
| PRINT("sys_rt_sigprocmask ( %d, %p, %p, %llu )",ARG1,ARG2,ARG3,(ULong)ARG4); |
| PRE_REG_READ4(long, "rt_sigprocmask", |
| int, how, vki_sigset_t *, set, vki_sigset_t *, oldset, |
| vki_size_t, sigsetsize); |
| if (ARG2 != 0) |
| PRE_MEM_READ( "rt_sigprocmask(set)", ARG2, sizeof(vki_sigset_t)); |
| if (ARG3 != 0) |
| PRE_MEM_WRITE( "rt_sigprocmask(oldset)", ARG3, sizeof(vki_sigset_t)); |
| |
| // Like the kernel, we fail if the sigsetsize is not exactly what we expect. |
| if (sizeof(vki_sigset_t) != ARG4) |
| SET_RESULT( -VKI_EMFILE ); |
| else { |
| SET_RESULT( VG_(do_sys_sigprocmask) ( tid, ARG1 /*how*/, |
| (vki_sigset_t*) ARG2, |
| (vki_sigset_t*) ARG3 ) |
| ); |
| } |
| } |
| |
| POST(sys_rt_sigprocmask) |
| { |
| if (RES == 0 && ARG3 != 0) |
| POST_MEM_WRITE( ARG3, sizeof(vki_sigset_t)); |
| } |
| |
| PRE(sys_sigpending, 0) |
| { |
| PRINT( "sys_sigpending ( %p )", ARG1 ); |
| PRE_REG_READ1(long, "sigpending", vki_old_sigset_t *, set); |
| PRE_MEM_WRITE( "sigpending(set)", ARG1, sizeof(vki_old_sigset_t)); |
| } |
| |
| POST(sys_sigpending) |
| { |
| POST_MEM_WRITE( ARG1, sizeof(vki_old_sigset_t) ) ; |
| } |
| |
| PRE(sys_rt_sigpending, 0) |
| { |
| PRINT( "sys_rt_sigpending ( %p )", ARG1 ); |
| PRE_REG_READ2(long, "rt_sigpending", |
| vki_sigset_t *, set, vki_size_t, sigsetsize); |
| PRE_MEM_WRITE( "rt_sigpending(set)", ARG1, sizeof(vki_sigset_t)); |
| } |
| |
| POST(sys_rt_sigpending) |
| { |
| POST_MEM_WRITE( ARG1, sizeof(vki_sigset_t) ) ; |
| } |
| |
| PRE(sys_mq_open, 0) |
| { |
| PRINT("sys_mq_open( %p(%s), %d, %lld, %p )", |
| ARG1,ARG1,ARG2,(ULong)ARG3,ARG4); |
| PRE_REG_READ4(long, "mq_open", |
| const char *, name, int, oflag, vki_mode_t, mode, |
| struct mq_attr *, attr); |
| PRE_MEM_RASCIIZ( "mq_open(name)", ARG1 ); |
| if ((ARG2 & VKI_O_CREAT) != 0 && ARG4 != 0) { |
| const struct vki_mq_attr *attr = (struct vki_mq_attr *)ARG4; |
| PRE_MEM_READ( "mq_open(attr->mq_maxmsg)", |
| (Addr)&attr->mq_maxmsg, sizeof(attr->mq_maxmsg) ); |
| PRE_MEM_READ( "mq_open(attr->mq_msgsize)", |
| (Addr)&attr->mq_msgsize, sizeof(attr->mq_msgsize) ); |
| } |
| } |
| |
| POST(sys_mq_open) |
| { |
| if (!VG_(fd_allowed)(RES, "mq_open", tid, True)) { |
| VG_(close)(RES); |
| SET_RESULT( -VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| VG_(record_fd_open)(tid, RES, VG_(arena_strdup)(VG_AR_CORE, (Char*)ARG1)); |
| } |
| } |
| |
| PRE(sys_mq_unlink, 0) |
| { |
| PRINT("sys_mq_unlink ( %p(%s) )", ARG1,ARG1); |
| PRE_REG_READ1(long, "mq_unlink", const char *, name); |
| PRE_MEM_RASCIIZ( "mq_unlink(name)", ARG1 ); |
| } |
| |
| PRE(sys_mq_timedsend, MayBlock) |
| { |
| PRINT("sys_mq_timedsend ( %d, %p, %llu, %d, %p )", |
| ARG1,ARG2,(ULong)ARG3,ARG4,ARG5); |
| PRE_REG_READ5(long, "mq_timedsend", |
| vki_mqd_t, mqdes, const char *, msg_ptr, vki_size_t, msg_len, |
| unsigned int, msg_prio, const struct timespec *, abs_timeout); |
| if (!VG_(fd_allowed)(ARG1, "mq_timedsend", tid, False)) { |
| SET_RESULT( -VKI_EBADF ); |
| } else { |
| PRE_MEM_READ( "mq_timedsend(msg_ptr)", ARG2, ARG3 ); |
| if (ARG5 != 0) |
| PRE_MEM_READ( "mq_timedsend(abs_timeout)", ARG5, |
| sizeof(struct vki_timespec) ); |
| } |
| } |
| |
| PRE(sys_mq_timedreceive, MayBlock) |
| { |
| PRINT("sys_mq_timedreceive( %d, %p, %llu, %p, %p )", |
| ARG1,ARG2,(ULong)ARG3,ARG4,ARG5); |
| PRE_REG_READ5(ssize_t, "mq_timedreceive", |
| vki_mqd_t, mqdes, char *, msg_ptr, vki_size_t, msg_len, |
| unsigned int *, msg_prio, |
| const struct timespec *, abs_timeout); |
| if (!VG_(fd_allowed)(ARG1, "mq_timedreceive", tid, False)) { |
| SET_RESULT( -VKI_EBADF ); |
| } else { |
| PRE_MEM_WRITE( "mq_timedreceive(msg_ptr)", ARG2, ARG3 ); |
| if (ARG4 != 0) |
| PRE_MEM_WRITE( "mq_timedreceive(msg_prio)", |
| ARG4, sizeof(unsigned int) ); |
| if (ARG5 != 0) |
| PRE_MEM_READ( "mq_timedreceive(abs_timeout)", |
| ARG5, sizeof(struct vki_timespec) ); |
| } |
| } |
| |
| POST(sys_mq_timedreceive) |
| { |
| POST_MEM_WRITE( ARG2, ARG3 ); |
| if (ARG4 != 0) |
| POST_MEM_WRITE( ARG4, sizeof(unsigned int) ); |
| } |
| |
| PRE(sys_mq_notify, 0) |
| { |
| PRINT("sys_mq_notify( %d, %p )", ARG1,ARG2 ); |
| PRE_REG_READ2(long, "mq_notify", |
| vki_mqd_t, mqdes, const struct sigevent *, notification); |
| if (!VG_(fd_allowed)(ARG1, "mq_notify", tid, False)) |
| SET_RESULT( -VKI_EBADF ); |
| else if (ARG2 != 0) |
| PRE_MEM_READ( "mq_notify(notification)", |
| ARG2, sizeof(struct vki_sigevent) ); |
| } |
| |
| PRE(sys_mq_getsetattr, 0) |
| { |
| PRINT("sys_mq_getsetattr( %d, %p, %p )", ARG1,ARG2,ARG3 ); |
| PRE_REG_READ3(long, "mq_getsetattr", |
| vki_mqd_t, mqdes, const struct mq_attr *, mqstat, |
| struct mq_attr *, omqstat); |
| if (!VG_(fd_allowed)(ARG1, "mq_getsetattr", tid, False)) { |
| SET_RESULT( -VKI_EBADF ); |
| } else { |
| if (ARG2 != 0) { |
| const struct vki_mq_attr *attr = (struct vki_mq_attr *)ARG2; |
| PRE_MEM_READ( "mq_getsetattr(mqstat->mq_flags)", |
| (Addr)&attr->mq_flags, sizeof(attr->mq_flags) ); |
| } |
| if (ARG3 != 0) |
| PRE_MEM_WRITE( "mq_getsetattr(omqstat)", ARG3, |
| sizeof(struct vki_mq_attr) ); |
| } |
| } |
| |
| POST(sys_mq_getsetattr) |
| { |
| if (ARG3 != 0) |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_mq_attr) ); |
| } |
| |
| PRE(sys_timer_create, 0) |
| { |
| PRINT("sys_timer_create( %d, %p, %p )", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "timer_create", |
| vki_clockid_t, clockid, struct sigevent *, evp, |
| vki_timer_t *, timerid); |
| if (ARG2 != 0) |
| PRE_MEM_READ( "timer_create(evp)", ARG2, sizeof(struct vki_sigevent) ); |
| PRE_MEM_WRITE( "timer_create(timerid)", ARG3, sizeof(vki_timer_t) ); |
| } |
| |
| POST(sys_timer_create) |
| { |
| POST_MEM_WRITE( ARG3, sizeof(vki_timer_t) ); |
| } |
| |
| PRE(sys_timer_settime, 0) |
| { |
| PRINT("sys_timer_settime( %lld, %d, %p, %p )", (ULong)ARG1,ARG2,ARG3,ARG4); |
| PRE_REG_READ4(long, "timer_settime", |
| vki_timer_t, timerid, int, flags, |
| const struct itimerspec *, value, |
| struct itimerspec *, ovalue); |
| PRE_MEM_READ( "timer_settime(value)", ARG3, |
| sizeof(struct vki_itimerspec) ); |
| if (ARG4 != 0) |
| PRE_MEM_WRITE( "timer_settime(ovalue)", ARG4, |
| sizeof(struct vki_itimerspec) ); |
| } |
| |
| POST(sys_timer_settime) |
| { |
| if (ARG4 != 0) |
| POST_MEM_WRITE( ARG4, sizeof(struct vki_itimerspec) ); |
| } |
| |
| PRE(sys_timer_gettime, 0) |
| { |
| PRINT("sys_timer_gettime( %lld, %p )", (ULong)ARG1,ARG2); |
| PRE_REG_READ2(long, "timer_gettime", |
| vki_timer_t, timerid, struct itimerspec *, value); |
| PRE_MEM_WRITE( "timer_gettime(value)", ARG2, |
| sizeof(struct vki_itimerspec)); |
| } |
| |
| POST(sys_timer_gettime) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_itimerspec) ); |
| } |
| |
| PRE(sys_timer_getoverrun, 0) |
| { |
| PRINT("sys_timer_getoverrun( %p )", ARG1); |
| PRE_REG_READ1(long, "timer_getoverrun", vki_timer_t, timerid); |
| } |
| |
| PRE(sys_timer_delete, 0) |
| { |
| PRINT("sys_timer_delete( %p )", ARG1); |
| PRE_REG_READ1(long, "timer_delete", vki_timer_t, timerid); |
| } |
| |
| PRE(sys_clock_settime, 0) |
| { |
| PRINT("sys_clock_settime( %d, %p )", ARG1,ARG2); |
| PRE_REG_READ2(long, "clock_settime", |
| vki_clockid_t, clk_id, const struct timespec *, tp); |
| PRE_MEM_READ( "clock_settime(tp)", ARG2, sizeof(struct vki_timespec) ); |
| } |
| |
| PRE(sys_clock_gettime, 0) |
| { |
| PRINT("sys_clock_gettime( %d, %p )" , ARG1,ARG2); |
| PRE_REG_READ2(long, "clock_gettime", |
| vki_clockid_t, clk_id, struct timespec *, tp); |
| PRE_MEM_WRITE( "clock_gettime(tp)", ARG2, sizeof(struct vki_timespec) ); |
| } |
| |
| POST(sys_clock_gettime) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_timespec) ); |
| } |
| |
| PRE(sys_clock_getres, 0) |
| { |
| PRINT("sys_clock_getres( %d, %p )" , ARG1,ARG2); |
| // Nb: we can't use "RES" as the param name because that's a macro |
| // defined above! |
| PRE_REG_READ2(long, "clock_getres", |
| vki_clockid_t, clk_id, struct timespec *, res); |
| PRE_MEM_WRITE( "clock_getres(res)", ARG2, sizeof(struct vki_timespec) ); |
| } |
| |
| POST(sys_clock_getres) |
| { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_timespec) ); |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Executing the syscalls |
| ------------------------------------------------------------------ */ |
| |
| static UInt bad_flags = Special; |
| static void bad_before(ThreadId tid, ThreadState *tst) |
| { |
| VG_(message) |
| (Vg_DebugMsg,"WARNING: unhandled syscall: %u", (UInt)SYSNO); |
| if (VG_(clo_verbosity) > 1) { |
| VG_(get_and_pp_StackTrace)(tid, VG_(clo_backtrace_size)); |
| } |
| VG_(message) |
| (Vg_DebugMsg,"Do not panic. You may be able to fix this easily."); |
| VG_(message) |
| (Vg_DebugMsg,"Read the file README_MISSING_SYSCALL_OR_IOCTL."); |
| |
| SET_RESULT( -VKI_ENOSYS ); |
| } |
| |
| static const struct SyscallTableEntry bad_sys = |
| { &bad_flags, bad_before, NULL }; |
| |
| static const struct SyscallTableEntry *get_syscall_entry(UInt syscallno) |
| { |
| const struct SyscallTableEntry *sys; |
| |
| if (syscallno < VGA_(syscall_table_size) && |
| VGA_(syscall_table)[syscallno].before != NULL) |
| sys = &VGA_(syscall_table)[syscallno]; |
| else |
| sys = &bad_sys; |
| |
| return sys; |
| } |
| |
| /* Perform post-syscall actions */ |
| void VG_(post_syscall) (ThreadId tid) |
| { |
| const struct SyscallTableEntry *sys; |
| UInt flags; |
| Bool mayBlock; |
| ThreadState *tst = VG_(get_ThreadState)(tid); |
| Int syscallno; |
| |
| vg_assert(VG_(is_running_thread)(tid)); |
| |
| syscallno = tst->syscallno; |
| tst->syscallno = -1; |
| |
| vg_assert(syscallno != -1); |
| |
| sys = get_syscall_entry(syscallno); |
| flags = *(sys->flags_ptr); |
| |
| mayBlock = !!( flags & MayBlock ); |
| |
| if (sys->after != NULL && |
| ((flags & PostOnFail) != 0 || !VG_(is_kerror)(RES))) { |
| if (0) |
| VG_(printf)("post_syscall: calling sys_after tid=%d syscallno=%d\n", |
| tid, syscallno); |
| (sys->after)(tid, tst); |
| } |
| |
| /* Do any post-syscall actions |
| |
| NOTE: this is only called if the syscall completed. If the |
| syscall was restarted, then it will call the Tool's |
| pre_syscall again, without calling post_syscall (ie, more |
| pre's than post's) */ |
| if (VG_(needs).syscall_wrapper) { |
| //VGP_PUSHCC(VgpSkinSysWrap); |
| TL_(post_syscall)(tid, syscallno, RES); |
| //VGP_POPCC(VgpSkinSysWrap); |
| } |
| } |
| |
| |
| void VG_(client_syscall) ( ThreadId tid ) |
| { |
| ThreadState* tst; |
| UInt syscallno, flags; |
| const struct SyscallTableEntry *sys; |
| Bool isSpecial = False; |
| Bool mayBlock = False; |
| Bool runInLWP = False; |
| Bool syscall_done = False; /* we actually ran the syscall */ |
| |
| VGP_PUSHCC(VgpCoreSysWrap); |
| |
| tst = VG_(get_ThreadState)(tid); |
| |
| syscallno = (UInt)SYSNO; |
| |
| /* the syscall no is in %eax. For syscalls with <= 6 args, |
| args 1 .. 6 to the syscall are in %ebx %ecx %edx %esi %edi %ebp. |
| For calls with > 6 args, %ebx points to a lump of memory |
| containing the args. |
| |
| The result is returned in %eax. If this value >= 0, the call |
| succeeded, and this is the return value. If < 0, it failed, and |
| the negation of this value is errno. To be more specific, |
| if RES is in the range -EMEDIUMTYPE (-124) .. -EPERM (-1) |
| (kernel 2.4.9 sources, include/asm-i386/errno.h) |
| then it indicates an error. Otherwise it doesn't. |
| |
| Dirk Mueller (mueller@kde.org) says that values -4095 .. -1 |
| (inclusive?) indicate error returns. Not sure where the -4095 |
| comes from. |
| */ |
| |
| vg_assert(VG_(is_running_thread)(tid)); |
| vg_assert(tst->syscallno == -1); |
| tst->syscallno = syscallno; |
| |
| /* Make sure the tmp signal mask matches the real signal |
| mask; sigsuspend may change this. */ |
| vg_assert(VG_(iseqsigset)(&tst->sig_mask, &tst->tmp_sig_mask)); |
| |
| sys = get_syscall_entry(syscallno); |
| flags = *(sys->flags_ptr); |
| |
| /* !! is standard idiom to turn an int->bool */ |
| isSpecial = !!( flags & Special ); |
| mayBlock = !!( flags & MayBlock ); |
| // At most one of these should be true |
| vg_assert( isSpecial + mayBlock <= 1 ); |
| |
| /* Do any pre-syscall actions */ |
| if (VG_(needs).syscall_wrapper) { |
| VGP_PUSHCC(VgpToolSysWrap); |
| TL_(pre_syscall)(tid, syscallno); |
| VGP_POPCC(VgpToolSysWrap); |
| } |
| |
| PRINT("SYSCALL[%d,%d](%3d)%s%s:", |
| VG_(getpid)(), tid, syscallno, |
| isSpecial ? " special" : "", |
| runInLWP ? " runInLWP" : ""); |
| |
| tst->syscall_result_set = False; |
| |
| if (isSpecial) { |
| /* "Special" syscalls are implemented by Valgrind internally, |
| and do not generate real kernel calls. The expectation, |
| therefore, is that the "before" function not only does the |
| appropriate tests, but also performs the syscall itself and |
| sets the result. Special syscalls cannot block. */ |
| vg_assert(!mayBlock && !runInLWP); |
| |
| (sys->before)(tst->tid, tst); |
| /* This *must* result in tst->syscall_result_set becoming |
| True. */ |
| |
| // vg_assert(tst->sys_flags == flags); |
| vg_assert(tst->syscall_result_set == True); |
| |
| PRINT(" --> %lld (0x%llx)\n", (Long)(Word)RES, (ULong)RES); |
| syscall_done = True; |
| } else { |
| (sys->before)(tst->tid, tst); |
| /* This *may* result in tst->syscall_result_set becoming |
| True. */ |
| |
| if (tst->syscall_result_set) { |
| /* "before" decided to provide a syscall result itself, so |
| don't do anything - just pretend the syscall happened. */ |
| PRINT(" ==> %lld (0x%llx)\n", (Long)RES, (ULong)RES); |
| syscall_done = True; |
| } else if (mayBlock) { |
| vki_sigset_t mask; |
| |
| vg_assert(!(flags & PadAddr)); |
| |
| /* Syscall may block, so run it asynchronously */ |
| PRINT(" --> ...\n"); |
| |
| mask = tst->sig_mask; |
| VG_(sanitize_client_sigmask)(tid, &mask); |
| |
| VG_(set_sleeping)(tid, VgTs_WaitSys); |
| VGA_(client_syscall)(syscallno, tst, &mask); |
| /* VGA_(client_syscall) may not return if the syscall was |
| interrupted by a signal. In that case, flow of control |
| will end up back in the scheduler via the signal |
| machinery. */ |
| VG_(set_running)(tid); |
| PRINT("SYSCALL[%d,%d](%3d) --> %lld (0x%llx)\n", |
| VG_(getpid)(), tid, syscallno, (Long)(Word)RES, (ULong)RES); |
| } else { |
| /* run the syscall directly */ |
| if (flags & PadAddr) |
| VG_(pad_address_space)(VG_(client_end)); |
| |
| RES = VG_(do_syscall6)(syscallno, ARG1, ARG2, ARG3, ARG4, ARG5, ARG6); |
| PRINT(" --> %lld (0x%llx)\n", (Long)(Word)RES, (ULong)RES); |
| syscall_done = True; |
| } |
| } |
| |
| vg_assert(VG_(is_running_thread)(tid)); |
| |
| // Tell the tool that the assignment has occurred, so it can update |
| // shadow regs as necessary. |
| VGP_TRACK_SYSCALL_RETVAL(tid); |
| |
| VG_(post_syscall)(tid); |
| |
| if (flags & PadAddr) { |
| vg_assert(!mayBlock); |
| VG_(unpad_address_space)(VG_(client_end)); |
| //VG_(sanity_check_memory)(); |
| } |
| |
| /* VG_(post_syscall) should set this */ |
| vg_assert(tst->syscallno == -1); |
| |
| VGP_POPCC(VgpCoreSysWrap); |
| } |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |
| |