| |
| /*--------------------------------------------------------------------*/ |
| /*--- Wrappers for generic Unix system calls syswrap-generic.c ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2008 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 "pub_core_basics.h" |
| #include "pub_core_vki.h" |
| #include "pub_core_vkiscnums.h" |
| #include "pub_core_threadstate.h" |
| #include "pub_core_debuginfo.h" // VG_(di_notify_*) |
| #include "pub_core_aspacemgr.h" |
| #include "pub_core_transtab.h" // VG_(discard_translations) |
| #include "pub_core_xarray.h" |
| #include "pub_core_clientstate.h" // VG_(brk_base), VG_(brk_limit) |
| #include "pub_core_debuglog.h" |
| #include "pub_core_errormgr.h" |
| #include "pub_core_libcbase.h" |
| #include "pub_core_libcassert.h" |
| #include "pub_core_libcfile.h" |
| #include "pub_core_libcprint.h" |
| #include "pub_core_libcproc.h" |
| #include "pub_core_libcsignal.h" |
| #include "pub_core_mallocfree.h" |
| #include "pub_core_options.h" |
| #include "pub_core_scheduler.h" |
| #include "pub_core_signals.h" |
| #include "pub_core_stacktrace.h" // For VG_(get_and_pp_StackTrace)() |
| #include "pub_core_syscall.h" |
| #include "pub_core_syswrap.h" |
| #include "pub_core_tooliface.h" |
| #include "pub_core_ume.h" |
| |
| #include "priv_types_n_macros.h" |
| #include "priv_syswrap-generic.h" |
| |
| |
| /* Returns True iff address range is something the client can |
| plausibly mess with: all of it is either already belongs to the |
| client or is free or a reservation. */ |
| |
| Bool ML_(valid_client_addr)(Addr start, SizeT size, ThreadId tid, |
| const Char *syscallname) |
| { |
| Bool ret; |
| |
| if (size == 0) |
| return True; |
| |
| ret = VG_(am_is_valid_for_client_or_free_or_resvn) |
| (start,size,VKI_PROT_NONE); |
| |
| if (0) |
| VG_(printf)("%s: test=%p-%p ret=%d\n", |
| syscallname, start, start+size-1, (Int)ret); |
| |
| if (!ret && syscallname != NULL) { |
| VG_(message)(Vg_UserMsg, "Warning: client syscall %s tried " |
| "to modify addresses %p-%p", |
| syscallname, (void*)start, (void*)(start+size-1)); |
| if (VG_(clo_verbosity) > 1) { |
| VG_(get_and_pp_StackTrace)(tid, VG_(clo_backtrace_size)); |
| } |
| } |
| |
| return ret; |
| } |
| |
| |
| Bool ML_(client_signal_OK)(Int sigNo) |
| { |
| /* signal 0 is OK for kill */ |
| Bool ret = sigNo >= 0 && sigNo <= VG_SIGVGRTUSERMAX; |
| |
| //VG_(printf)("client_signal_OK(%d) -> %d\n", sigNo, ret); |
| |
| return ret; |
| } |
| |
| |
| /* Handy small function to help stop wrappers from segfaulting when |
| presented with bogus client addresses. Is not used for generating |
| user-visible errors. */ |
| |
| Bool ML_(safe_to_deref) ( void* start, SizeT size ) |
| { |
| return VG_(am_is_valid_for_client)( (Addr)start, size, VKI_PROT_NONE ); |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| 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 page_align_addr_and_len( Addr* a, SizeT* len) |
| { |
| Addr ra; |
| |
| ra = VG_PGROUNDDN(*a); |
| *len = VG_PGROUNDUP(*a + *len) - ra; |
| *a = ra; |
| } |
| |
| /* When a client mmap has been successfully done, this function must |
| be called. It notifies both aspacem and the tool of the new |
| mapping. |
| */ |
| void |
| ML_(notify_aspacem_and_tool_of_mmap) ( Addr a, SizeT len, UInt prot, |
| UInt flags, Int fd, Off64T offset ) |
| { |
| Bool rr, ww, xx, d; |
| |
| /* 'a' is the return value from a real kernel mmap, hence: */ |
| vg_assert(VG_IS_PAGE_ALIGNED(a)); |
| /* whereas len is whatever the syscall supplied. So: */ |
| len = VG_PGROUNDUP(len); |
| |
| d = VG_(am_notify_client_mmap)( a, len, prot, flags, fd, offset ); |
| |
| rr = toBool(prot & VKI_PROT_READ); |
| ww = toBool(prot & VKI_PROT_WRITE); |
| xx = toBool(prot & VKI_PROT_EXEC); |
| |
| VG_TRACK( new_mem_mmap, a, len, rr, ww, xx ); |
| |
| if (d) |
| VG_(discard_translations)( (Addr64)a, (ULong)len, |
| "ML_(notify_aspacem_and_tool_of_mmap)" ); |
| } |
| |
| /* Expand (or shrink) an existing mapping, potentially moving it at |
| the same time (controlled by the MREMAP_MAYMOVE flag). Nightmare. |
| */ |
| static |
| SysRes do_mremap( Addr old_addr, SizeT old_len, |
| Addr new_addr, SizeT new_len, |
| UWord flags, ThreadId tid ) |
| { |
| # define MIN_SIZET(_aa,_bb) (_aa) < (_bb) ? (_aa) : (_bb) |
| |
| Bool ok, d; |
| NSegment const* old_seg; |
| Addr advised; |
| Bool f_fixed = toBool(flags & VKI_MREMAP_FIXED); |
| Bool f_maymove = toBool(flags & VKI_MREMAP_MAYMOVE); |
| |
| if (0) |
| VG_(printf)("do_remap (old %p %d) (new %p %d) %s %s\n", |
| old_addr,old_len,new_addr,new_len, |
| flags & VKI_MREMAP_MAYMOVE ? "MAYMOVE" : "", |
| flags & VKI_MREMAP_FIXED ? "FIXED" : ""); |
| if (0) |
| VG_(am_show_nsegments)(0, "do_remap: before"); |
| |
| if (flags & ~(VKI_MREMAP_FIXED | VKI_MREMAP_MAYMOVE)) |
| goto eINVAL; |
| |
| if (!VG_IS_PAGE_ALIGNED(old_addr)) |
| goto eINVAL; |
| |
| old_len = VG_PGROUNDUP(old_len); |
| new_len = VG_PGROUNDUP(new_len); |
| |
| if (new_len == 0) |
| goto eINVAL; |
| |
| /* kernel doesn't reject this, but we do. */ |
| if (old_len == 0) |
| goto eINVAL; |
| |
| /* reject wraparounds */ |
| if (old_addr + old_len < old_addr |
| || new_addr + new_len < new_len) |
| goto eINVAL; |
| |
| /* kernel rejects all fixed, no-move requests (which are |
| meaningless). */ |
| if (f_fixed == True && f_maymove == False) |
| goto eINVAL; |
| |
| /* Stay away from non-client areas. */ |
| if (!ML_(valid_client_addr)(old_addr, old_len, tid, "mremap(old_addr)")) |
| goto eINVAL; |
| |
| /* In all remaining cases, if the old range does not fall within a |
| single segment, fail. */ |
| old_seg = VG_(am_find_nsegment)( old_addr ); |
| if (old_addr < old_seg->start || old_addr+old_len-1 > old_seg->end) |
| goto eINVAL; |
| if (old_seg->kind != SkAnonC && old_seg->kind != SkFileC) |
| goto eINVAL; |
| |
| vg_assert(old_len > 0); |
| vg_assert(new_len > 0); |
| vg_assert(VG_IS_PAGE_ALIGNED(old_len)); |
| vg_assert(VG_IS_PAGE_ALIGNED(new_len)); |
| vg_assert(VG_IS_PAGE_ALIGNED(old_addr)); |
| |
| /* There are 3 remaining cases: |
| |
| * maymove == False |
| |
| new space has to be at old address, so: |
| - shrink -> unmap end |
| - same size -> do nothing |
| - grow -> if can grow in-place, do so, else fail |
| |
| * maymove == True, fixed == False |
| |
| new space can be anywhere, so: |
| - shrink -> unmap end |
| - same size -> do nothing |
| - grow -> if can grow in-place, do so, else |
| move to anywhere large enough, else fail |
| |
| * maymove == True, fixed == True |
| |
| new space must be at new address, so: |
| |
| - if new address is not page aligned, fail |
| - if new address range overlaps old one, fail |
| - if new address range cannot be allocated, fail |
| - else move to new address range with new size |
| - else fail |
| */ |
| |
| if (f_maymove == False) { |
| /* new space has to be at old address */ |
| if (new_len < old_len) |
| goto shrink_in_place; |
| if (new_len > old_len) |
| goto grow_in_place_or_fail; |
| goto same_in_place; |
| } |
| |
| if (f_maymove == True && f_fixed == False) { |
| /* new space can be anywhere */ |
| if (new_len < old_len) |
| goto shrink_in_place; |
| if (new_len > old_len) |
| goto grow_in_place_or_move_anywhere_or_fail; |
| goto same_in_place; |
| } |
| |
| if (f_maymove == True && f_fixed == True) { |
| /* new space can only be at the new address */ |
| if (!VG_IS_PAGE_ALIGNED(new_addr)) |
| goto eINVAL; |
| if (new_addr+new_len-1 < old_addr || new_addr > old_addr+old_len-1) { |
| /* no overlap */ |
| } else { |
| goto eINVAL; |
| } |
| if (new_addr == 0) |
| goto eINVAL; |
| /* VG_(am_get_advisory_client_simple) interprets zero to mean |
| non-fixed, which is not what we want */ |
| advised = VG_(am_get_advisory_client_simple)(new_addr, new_len, &ok); |
| if (!ok || advised != new_addr) |
| goto eNOMEM; |
| ok = VG_(am_relocate_nooverlap_client) |
| ( &d, old_addr, old_len, new_addr, new_len ); |
| if (ok) { |
| VG_TRACK( copy_mem_remap, old_addr, new_addr, |
| MIN_SIZET(old_len,new_len) ); |
| if (new_len > old_len) |
| VG_TRACK( new_mem_mmap, new_addr+old_len, new_len-old_len, |
| old_seg->hasR, old_seg->hasW, old_seg->hasX ); |
| VG_TRACK(die_mem_munmap, old_addr, old_len); |
| if (d) { |
| VG_(discard_translations)( old_addr, old_len, "do_remap(1)" ); |
| VG_(discard_translations)( new_addr, new_len, "do_remap(2)" ); |
| } |
| return VG_(mk_SysRes_Success)( new_addr ); |
| } |
| goto eNOMEM; |
| } |
| |
| /* end of the 3 cases */ |
| /*NOTREACHED*/ vg_assert(0); |
| |
| grow_in_place_or_move_anywhere_or_fail: |
| { |
| /* try growing it in-place */ |
| Addr needA = old_addr + old_len; |
| SSizeT needL = new_len - old_len; |
| |
| vg_assert(needL > 0); |
| if (needA == 0) |
| goto eINVAL; |
| /* VG_(am_get_advisory_client_simple) interprets zero to mean |
| non-fixed, which is not what we want */ |
| advised = VG_(am_get_advisory_client_simple)( needA, needL, &ok ); |
| if (ok) { |
| /* VG_(am_get_advisory_client_simple) (first arg == 0, meaning |
| this-or-nothing) is too lenient, and may allow us to trash |
| the next segment along. So make very sure that the proposed |
| new area really is free. This is perhaps overly |
| conservative, but it fixes #129866. */ |
| NSegment const* segLo = VG_(am_find_nsegment)( needA ); |
| NSegment const* segHi = VG_(am_find_nsegment)( needA + needL - 1 ); |
| if (segLo == NULL || segHi == NULL |
| || segLo != segHi || segLo->kind != SkFree) |
| ok = False; |
| } |
| if (ok && advised == needA) { |
| ok = VG_(am_extend_map_client)( &d, (NSegment*)old_seg, needL ); |
| if (ok) { |
| VG_TRACK( new_mem_mmap, needA, needL, |
| old_seg->hasR, |
| old_seg->hasW, old_seg->hasX ); |
| if (d) |
| VG_(discard_translations)( needA, needL, "do_remap(3)" ); |
| return VG_(mk_SysRes_Success)( old_addr ); |
| } |
| } |
| |
| /* that failed. Look elsewhere. */ |
| advised = VG_(am_get_advisory_client_simple)( 0, new_len, &ok ); |
| if (ok) { |
| /* assert new area does not overlap old */ |
| vg_assert(advised+new_len-1 < old_addr |
| || advised > old_addr+old_len-1); |
| ok = VG_(am_relocate_nooverlap_client) |
| ( &d, old_addr, old_len, advised, new_len ); |
| if (ok) { |
| VG_TRACK( copy_mem_remap, old_addr, advised, |
| MIN_SIZET(old_len,new_len) ); |
| if (new_len > old_len) |
| VG_TRACK( new_mem_mmap, advised+old_len, new_len-old_len, |
| old_seg->hasR, old_seg->hasW, old_seg->hasX ); |
| VG_TRACK(die_mem_munmap, old_addr, old_len); |
| if (d) { |
| VG_(discard_translations)( old_addr, old_len, "do_remap(4)" ); |
| VG_(discard_translations)( advised, new_len, "do_remap(5)" ); |
| } |
| return VG_(mk_SysRes_Success)( advised ); |
| } |
| } |
| goto eNOMEM; |
| } |
| /*NOTREACHED*/ vg_assert(0); |
| |
| grow_in_place_or_fail: |
| { |
| Addr needA = old_addr + old_len; |
| SizeT needL = new_len - old_len; |
| if (needA == 0) |
| goto eINVAL; |
| /* VG_(am_get_advisory_client_simple) interprets zero to mean |
| non-fixed, which is not what we want */ |
| advised = VG_(am_get_advisory_client_simple)( needA, needL, &ok ); |
| if (ok) { |
| /* VG_(am_get_advisory_client_simple) (first arg == 0, meaning |
| this-or-nothing) is too lenient, and may allow us to trash |
| the next segment along. So make very sure that the proposed |
| new area really is free. */ |
| NSegment const* segLo = VG_(am_find_nsegment)( needA ); |
| NSegment const* segHi = VG_(am_find_nsegment)( needA + needL - 1 ); |
| if (segLo == NULL || segHi == NULL |
| || segLo != segHi || segLo->kind != SkFree) |
| ok = False; |
| } |
| if (!ok || advised != needA) |
| goto eNOMEM; |
| ok = VG_(am_extend_map_client)( &d, (NSegment*)old_seg, needL ); |
| if (!ok) |
| goto eNOMEM; |
| VG_TRACK( new_mem_mmap, needA, needL, |
| old_seg->hasR, old_seg->hasW, old_seg->hasX ); |
| if (d) |
| VG_(discard_translations)( needA, needL, "do_remap(6)" ); |
| return VG_(mk_SysRes_Success)( old_addr ); |
| } |
| /*NOTREACHED*/ vg_assert(0); |
| |
| shrink_in_place: |
| { |
| SysRes sres = VG_(am_munmap_client)( &d, old_addr+new_len, old_len-new_len ); |
| if (sres.isError) |
| return sres; |
| VG_TRACK( die_mem_munmap, old_addr+new_len, old_len-new_len ); |
| if (d) |
| VG_(discard_translations)( old_addr+new_len, old_len-new_len, |
| "do_remap(7)" ); |
| return VG_(mk_SysRes_Success)( old_addr ); |
| } |
| /*NOTREACHED*/ vg_assert(0); |
| |
| same_in_place: |
| return VG_(mk_SysRes_Success)( old_addr ); |
| /*NOTREACHED*/ vg_assert(0); |
| |
| eINVAL: |
| return VG_(mk_SysRes_Error)( VKI_EINVAL ); |
| eNOMEM: |
| return VG_(mk_SysRes_Error)( VKI_ENOMEM ); |
| |
| # undef MIN_SIZET |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| File-descriptor tracking |
| ------------------------------------------------------------------ */ |
| |
| /* 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 = NULL; |
| |
| /* Count of open file descriptors. */ |
| static Int fd_count = 0; |
| |
| |
| /* 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 ML_(record_fd_open_with_given_name)(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 = VG_(arena_strdup)(VG_AR_CORE, pathname); |
| i->where = (tid == -1) ? NULL : VG_(record_ExeContext)(tid, 0/*first_ip_delta*/); |
| } |
| |
| // Record opening of an fd, and find its name. |
| static void record_fd_open_named(ThreadId tid, Int fd) |
| { |
| static HChar buf[VKI_PATH_MAX]; |
| Char* name; |
| if (VG_(resolve_filename)(fd, buf, VKI_PATH_MAX)) |
| name = buf; |
| else |
| name = NULL; |
| |
| ML_(record_fd_open_with_given_name)(tid, fd, name); |
| } |
| |
| // Record opening of a nameless fd. |
| void ML_(record_fd_open_nameless)(ThreadId tid, Int fd) |
| { |
| ML_(record_fd_open_with_given_name)(tid, fd, NULL); |
| } |
| |
| 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 = VG_(ntohl)(sa->sin_addr.s_addr); |
| if (addr == 0) { |
| VG_(sprintf)(name, "<unbound>"); |
| } else { |
| VG_(sprintf)(name, "%u.%u.%u.%u:%u", |
| (addr>>24) & 0xFF, (addr>>16) & 0xFF, |
| (addr>>8) & 0xFF, addr & 0xFF, |
| VG_(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) (void) |
| { |
| 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(void) |
| { |
| struct vki_rlimit lim; |
| UInt 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) |
| ML_(record_fd_open_nameless)(-1, i); |
| } |
| |
| /* Initialize the list of open file descriptors with the file descriptors |
| we inherited from out parent process. */ |
| |
| void VG_(init_preopened_fds)(void) |
| { |
| Int ret; |
| struct vki_dirent d; |
| SysRes f; |
| |
| f = VG_(open)("/proc/self/fd", VKI_O_RDONLY, 0); |
| if (f.isError) { |
| do_hacky_preopened(); |
| return; |
| } |
| |
| while ((ret = VG_(getdents)(f.res, &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.res) |
| if (VG_(clo_track_fds)) |
| record_fd_open_named(-1, fno); |
| } |
| |
| VG_(lseek)(f.res, d.d_off, VKI_SEEK_SET); |
| } |
| |
| out: |
| VG_(close)(f.res); |
| } |
| |
| 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, Bool read, |
| 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, Bool read, |
| Char *msg, Addr base, SizeT size ) |
| { |
| Char *outmsg = strdupcat ( "socketcall.recvmsg", msg, VG_AR_CORE ); |
| if ( read ) |
| PRE_MEM_READ( outmsg, base, size ); |
| else |
| PRE_MEM_WRITE( outmsg, base, size ); |
| VG_(arena_free) ( VG_AR_CORE, outmsg ); |
| } |
| |
| static |
| void post_mem_write_recvmsg ( ThreadId tid, Bool read, |
| Char *fieldName, Addr base, SizeT size ) |
| { |
| if ( !read ) |
| POST_MEM_WRITE( base, size ); |
| } |
| |
| static |
| void msghdr_foreachfield ( |
| ThreadId tid, |
| struct vki_msghdr *msg, |
| void (*foreach_func)( ThreadId, Bool, Char *, Addr, SizeT ) |
| ) |
| { |
| if ( !msg ) |
| return; |
| |
| foreach_func ( tid, True, "(msg)", (Addr)&msg->msg_name, sizeof( msg->msg_name ) ); |
| foreach_func ( tid, True, "(msg)", (Addr)&msg->msg_namelen, sizeof( msg->msg_namelen ) ); |
| foreach_func ( tid, True, "(msg)", (Addr)&msg->msg_iov, sizeof( msg->msg_iov ) ); |
| foreach_func ( tid, True, "(msg)", (Addr)&msg->msg_iovlen, sizeof( msg->msg_iovlen ) ); |
| foreach_func ( tid, True, "(msg)", (Addr)&msg->msg_control, sizeof( msg->msg_control ) ); |
| foreach_func ( tid, True, "(msg)", (Addr)&msg->msg_controllen, sizeof( msg->msg_controllen ) ); |
| foreach_func ( tid, False, "(msg)", (Addr)&msg->msg_flags, sizeof( msg->msg_flags ) ); |
| |
| if ( msg->msg_name ) |
| foreach_func ( tid, False, |
| "(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, True, |
| "(msg.msg_iov)", |
| (Addr)iov, msg->msg_iovlen * sizeof( struct vki_iovec ) ); |
| |
| for ( i = 0; i < msg->msg_iovlen; ++i, ++iov ) |
| foreach_func ( tid, False, |
| "(msg.msg_iov[i])", |
| (Addr)iov->iov_base, iov->iov_len ); |
| } |
| |
| if ( msg->msg_control ) |
| foreach_func ( tid, False, |
| "(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 |
| // ML_(fd_allowed)()? |
| record_fd_open_named(tid, 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_(tdict).track_pre_mem_write) { |
| UInt buflen_in = deref_UInt( tid, buflen_p, buflen_s); |
| if (buflen_in > 0) { |
| VG_(tdict).track_pre_mem_write( Vg_CoreSysCall, tid, buf_s, buf_p, buflen_in ); |
| } |
| } |
| } |
| |
| static |
| void buf_and_len_post_check( ThreadId tid, SysRes res, |
| Addr buf_p, Addr buflen_p, Char* s ) |
| { |
| if (!res.isError && VG_(tdict).track_post_mem_write) { |
| UInt buflen_out = deref_UInt( tid, buflen_p, s); |
| if (buflen_out > 0 && buf_p != (Addr)NULL) { |
| VG_(tdict).track_post_mem_write( Vg_CoreSysCall, tid, buf_p, buflen_out ); |
| } |
| } |
| } |
| |
| /* --------------------------------------------------------------------- |
| Data seg end, for brk() |
| ------------------------------------------------------------------ */ |
| |
| /* +--------+------------+ |
| | anon | resvn | |
| +--------+------------+ |
| |
| ^ ^ ^ |
| | | boundary is page aligned |
| | VG_(brk_limit) -- no alignment constraint |
| VG_(brk_base) -- page aligned -- does not move |
| |
| Both the anon part and the reservation part are always at least |
| one page. |
| */ |
| |
| /* Set the new data segment end to NEWBRK. If this succeeds, return |
| NEWBRK, else return the current data segment end. */ |
| |
| static Addr do_brk ( Addr newbrk ) |
| { |
| NSegment const* aseg; |
| NSegment const* rseg; |
| Addr newbrkP; |
| SizeT delta; |
| Bool ok; |
| Bool debug = False; |
| |
| 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)) |
| /* Clearly impossible. */ |
| goto bad; |
| |
| if (newbrk >= VG_(brk_base) && newbrk < VG_(brk_limit)) { |
| /* shrinking the data segment. Be lazy and don't munmap the |
| excess area. */ |
| NSegment const * seg = VG_(am_find_nsegment)(newbrk); |
| if (seg && seg->hasT) |
| VG_(discard_translations)( newbrk, VG_(brk_limit) - newbrk, |
| "do_brk(shrink)" ); |
| /* Since we're being lazy and not unmapping pages, we have to |
| zero out the area, so that if the area later comes back into |
| circulation, it will be filled with zeroes, as if it really |
| had been unmapped and later remapped. Be a bit paranoid and |
| try hard to ensure we're not going to segfault by doing the |
| write - check both ends of the range are in the same segment |
| and that segment is writable. */ |
| if (seg) { |
| /* pre: newbrk < VG_(brk_limit) |
| => newbrk <= VG_(brk_limit)-1 */ |
| NSegment const * seg2; |
| vg_assert(newbrk < VG_(brk_limit)); |
| seg2 = VG_(am_find_nsegment)( VG_(brk_limit)-1 ); |
| if (seg2 && seg == seg2 && seg->hasW) |
| VG_(memset)( (void*)newbrk, 0, VG_(brk_limit) - newbrk ); |
| } |
| |
| VG_(brk_limit) = newbrk; |
| return newbrk; |
| } |
| |
| /* otherwise we're expanding the brk segment. */ |
| if (VG_(brk_limit) > VG_(brk_base)) |
| aseg = VG_(am_find_nsegment)( VG_(brk_limit)-1 ); |
| else |
| aseg = VG_(am_find_nsegment)( VG_(brk_limit) ); |
| rseg = VG_(am_next_nsegment)( (NSegment*)aseg, True/*forwards*/ ); |
| |
| /* These should be assured by setup_client_dataseg in m_main. */ |
| vg_assert(aseg); |
| vg_assert(rseg); |
| vg_assert(aseg->kind == SkAnonC); |
| vg_assert(rseg->kind == SkResvn); |
| vg_assert(aseg->end+1 == rseg->start); |
| |
| vg_assert(newbrk >= VG_(brk_base)); |
| if (newbrk <= rseg->start) { |
| /* still fits within the anon segment. */ |
| VG_(brk_limit) = newbrk; |
| return newbrk; |
| } |
| |
| if (newbrk > rseg->end+1 - VKI_PAGE_SIZE) { |
| /* request is too large -- the resvn would fall below 1 page, |
| which isn't allowed. */ |
| goto bad; |
| } |
| |
| newbrkP = VG_PGROUNDUP(newbrk); |
| vg_assert(newbrkP > rseg->start && newbrkP <= rseg->end+1 - VKI_PAGE_SIZE); |
| delta = newbrkP - rseg->start; |
| vg_assert(delta > 0); |
| vg_assert(VG_IS_PAGE_ALIGNED(delta)); |
| |
| ok = VG_(am_extend_into_adjacent_reservation_client)( (NSegment*)aseg, delta ); |
| if (!ok) goto bad; |
| |
| VG_(brk_limit) = newbrk; |
| return newbrk; |
| |
| bad: |
| return VG_(brk_limit); |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Vet file descriptors for sanity |
| ------------------------------------------------------------------ */ |
| /* |
| > - what does the "Bool soft" parameter mean? |
| |
| (Tom Hughes, 3 Oct 05): |
| |
| Whether or not to consider a file descriptor invalid if it is above |
| the current soft limit. |
| |
| Basically if we are testing whether a newly created file descriptor is |
| valid (in a post handler) then we set soft to true, and if we are |
| testing whether a file descriptor that is about to be used (in a pre |
| handler) is valid [viz, an already-existing fd] then we set it to false. |
| |
| The point is that if the (virtual) soft limit is lowered then any |
| existing descriptors can still be read/written/closed etc (so long as |
| they are below the valgrind reserved descriptors) but no new |
| descriptors can be created above the new soft limit. |
| |
| (jrs 4 Oct 05: in which case, I've renamed it "isNewFd") |
| */ |
| |
| /* Return true if we're allowed to use or create this fd */ |
| Bool ML_(fd_allowed)(Int fd, const Char *syscallname, ThreadId tid, Bool isNewFd) |
| { |
| Bool allowed = True; |
| |
| /* hard limits always apply */ |
| if (fd < 0 || fd >= VG_(fd_hard_limit)) |
| allowed = False; |
| |
| /* hijacking the logging fd is never allowed */ |
| if (fd == VG_(clo_log_fd)) |
| allowed = False; |
| |
| /* if creating a new fd (rather than using an existing one), the |
| soft limit must also be observed */ |
| if (isNewFd && fd >= VG_(fd_soft_limit)) |
| allowed = False; |
| |
| /* this looks like it ought to be included, but causes problems: */ |
| /* |
| if (fd == 2 && VG_(debugLog_getLevel)() > 0) |
| allowed = False; |
| */ |
| /* The difficulty is as follows: consider a program P which expects |
| to be able to mess with (redirect) its own stderr (fd 2). |
| Usually to deal with P we would issue command line flags to send |
| logging somewhere other than stderr, so as not to disrupt P. |
| The problem is that -d unilaterally hijacks stderr with no |
| consultation with P. And so, if this check is enabled, P will |
| work OK normally but fail if -d is issued. |
| |
| Basically -d is a hack and you take your chances when using it. |
| It's very useful for low level debugging -- particularly at |
| startup -- and having its presence change the behaviour of the |
| client is exactly what we don't want. */ |
| |
| /* croak? */ |
| if ((!allowed) && VG_(showing_core_errors)() ) { |
| 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 allowed; |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Deal with a bunch of socket-related syscalls |
| ------------------------------------------------------------------ */ |
| |
| /* ------ */ |
| |
| void |
| ML_(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) ); |
| } |
| |
| SysRes |
| ML_(generic_POST_sys_socketpair) ( ThreadId tid, |
| SysRes res, |
| UWord arg0, UWord arg1, |
| UWord arg2, UWord arg3 ) |
| { |
| SysRes r = res; |
| Int fd1 = ((Int*)arg3)[0]; |
| Int fd2 = ((Int*)arg3)[1]; |
| vg_assert(!res.isError); /* guaranteed by caller */ |
| POST_MEM_WRITE( arg3, 2*sizeof(int) ); |
| if (!ML_(fd_allowed)(fd1, "socketcall.socketpair", tid, True) || |
| !ML_(fd_allowed)(fd2, "socketcall.socketpair", tid, True)) { |
| VG_(close)(fd1); |
| VG_(close)(fd2); |
| r = VG_(mk_SysRes_Error)( VKI_EMFILE ); |
| } else { |
| POST_MEM_WRITE( arg3, 2*sizeof(int) ); |
| if (VG_(clo_track_fds)) { |
| ML_(record_fd_open_nameless)(tid, fd1); |
| ML_(record_fd_open_nameless)(tid, fd2); |
| } |
| } |
| return r; |
| } |
| |
| /* ------ */ |
| |
| SysRes |
| ML_(generic_POST_sys_socket) ( ThreadId tid, SysRes res ) |
| { |
| SysRes r = res; |
| vg_assert(!res.isError); /* guaranteed by caller */ |
| if (!ML_(fd_allowed)(res.res, "socket", tid, True)) { |
| VG_(close)(res.res); |
| r = VG_(mk_SysRes_Error)( VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| ML_(record_fd_open_nameless)(tid, res.res); |
| } |
| return r; |
| } |
| |
| /* ------ */ |
| |
| void |
| ML_(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 |
| ML_(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)" ); |
| } |
| |
| SysRes |
| ML_(generic_POST_sys_accept) ( ThreadId tid, |
| SysRes res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| SysRes r = res; |
| vg_assert(!res.isError); /* guaranteed by caller */ |
| if (!ML_(fd_allowed)(res.res, "accept", tid, True)) { |
| VG_(close)(res.res); |
| r = VG_(mk_SysRes_Error)( 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)) |
| ML_(record_fd_open_nameless)(tid, res.res); |
| } |
| return r; |
| } |
| |
| /* ------ */ |
| |
| void |
| ML_(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 |
| ML_(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 |
| ML_(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 |
| ML_(generic_POST_sys_recvfrom) ( ThreadId tid, |
| SysRes 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; |
| |
| vg_assert(!res.isError); /* guaranteed by caller */ |
| 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 |
| ML_(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 |
| ML_(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 |
| ML_(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 |
| ML_(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 |
| ML_(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)" ); |
| if (arg1 == VKI_SOL_SCTP && |
| (arg2 == VKI_SCTP_GET_PEER_ADDRS || arg2 == VKI_SCTP_GET_LOCAL_ADDRS)) { |
| struct vki_sctp_getaddrs *ga = (struct vki_sctp_getaddrs*)arg3; |
| int address_bytes = sizeof(struct vki_sockaddr_in6) * ga->addr_num; |
| PRE_MEM_WRITE( "socketcall.getsockopt(optval.addrs)", (Addr)ga->addrs, address_bytes ); |
| } |
| } |
| } |
| |
| void |
| ML_(generic_POST_sys_getsockopt) ( ThreadId tid, |
| SysRes res, |
| UWord arg0, UWord arg1, UWord arg2, |
| UWord arg3, UWord arg4 ) |
| { |
| Addr optval_p = arg3; |
| Addr optlen_p = arg4; |
| vg_assert(!res.isError); /* guaranteed by caller */ |
| if (optval_p != (Addr)NULL) { |
| buf_and_len_post_check ( tid, res, optval_p, optlen_p, |
| "socketcall.getsockopt(optlen_out)" ); |
| if (arg1 == VKI_SOL_SCTP && |
| (arg2 == VKI_SCTP_GET_PEER_ADDRS || arg2 == VKI_SCTP_GET_LOCAL_ADDRS)) { |
| struct vki_sctp_getaddrs *ga = (struct vki_sctp_getaddrs*)arg3; |
| struct vki_sockaddr *a = ga->addrs; |
| int i; |
| for (i = 0; i < ga->addr_num; i++) { |
| int sl = 0; |
| if (a->sa_family == VKI_AF_INET) |
| sl = sizeof(struct vki_sockaddr_in); |
| else if (a->sa_family == VKI_AF_INET6) |
| sl = sizeof(struct vki_sockaddr_in6); |
| else { |
| VG_(message)(Vg_UserMsg, "Warning: getsockopt: unhandled address type %d", a->sa_family); |
| } |
| a = (struct vki_sockaddr*)((char*)a + sl); |
| } |
| POST_MEM_WRITE( (Addr)ga->addrs, (char*)a - (char*)ga->addrs ); |
| } |
| } |
| } |
| |
| /* ------ */ |
| |
| void |
| ML_(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 |
| ML_(generic_POST_sys_getsockname) ( ThreadId tid, |
| SysRes res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| Addr name_p = arg1; |
| Addr namelen_p = arg2; |
| vg_assert(!res.isError); /* guaranteed by caller */ |
| buf_and_len_post_check ( tid, res, name_p, namelen_p, |
| "socketcall.getsockname(namelen_out)" ); |
| } |
| |
| /* ------ */ |
| |
| void |
| ML_(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 |
| ML_(generic_POST_sys_getpeername) ( ThreadId tid, |
| SysRes res, |
| UWord arg0, UWord arg1, UWord arg2 ) |
| { |
| Addr name_p = arg1; |
| Addr namelen_p = arg2; |
| vg_assert(!res.isError); /* guaranteed by caller */ |
| buf_and_len_post_check ( tid, res, name_p, namelen_p, |
| "socketcall.getpeername(namelen_out)" ); |
| } |
| |
| /* ------ */ |
| |
| void |
| ML_(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 |
| ML_(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 |
| ML_(generic_POST_sys_recvmsg) ( ThreadId tid, |
| 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 |
| ML_(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 |
| ML_(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; |
| SysRes 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 (res.isError) |
| return 0; |
| |
| return buf.sem_nsems; |
| } |
| |
| void |
| ML_(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 |
| ML_(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; |
| } |
| } |
| |
| /* ------ */ |
| |
| /* ------ */ |
| |
| static |
| UInt get_shm_size ( Int shmid ) |
| { |
| # ifdef __NR_shmctl |
| struct vki_shmid64_ds buf; |
| SysRes __res = VG_(do_syscall3)(__NR_shmctl, shmid, VKI_IPC_STAT, (UWord)&buf); |
| # else |
| struct vki_shmid_ds buf; |
| SysRes __res = VG_(do_syscall5)(__NR_ipc, 24 /* IPCOP_shmctl */, shmid, |
| VKI_IPC_STAT, 0, (UWord)&buf); |
| # endif |
| if (__res.isError) |
| return 0; |
| |
| return buf.shm_segsz; |
| } |
| |
| UWord |
| ML_(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 ); |
| UWord tmp; |
| Bool ok; |
| if (arg1 == 0) { |
| tmp = VG_(am_get_advisory_client_simple)(0, segmentSize, &ok); |
| if (ok) |
| arg1 = tmp; |
| } |
| else if (!ML_(valid_client_addr)(arg1, segmentSize, tid, "shmat")) |
| arg1 = 0; |
| return arg1; |
| } |
| |
| void |
| ML_(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; |
| Bool d; |
| |
| if (arg2 & VKI_SHM_RDONLY) |
| prot &= ~VKI_PROT_WRITE; |
| /* It isn't exactly correct to pass 0 for the fd and offset |
| here. The kernel seems to think the corresponding section |
| does have dev/ino numbers: |
| |
| 04e52000-04ec8000 rw-s 00000000 00:06 1966090 /SYSV00000000 (deleted) |
| |
| However there is no obvious way to find them. In order to |
| cope with the discrepancy, aspacem's sync checker omits the |
| dev/ino correspondence check in cases where V does not know |
| the dev/ino. */ |
| d = VG_(am_notify_client_shmat)( res, VG_PGROUNDUP(segmentSize), prot ); |
| |
| /* 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 (d) |
| VG_(discard_translations)( (Addr64)res, |
| (ULong)VG_PGROUNDUP(segmentSize), |
| "ML_(generic_POST_sys_shmat)" ); |
| } |
| } |
| |
| /* ------ */ |
| |
| Bool |
| ML_(generic_PRE_sys_shmdt) ( ThreadId tid, UWord arg0 ) |
| { |
| /* int shmdt(const void *shmaddr); */ |
| return ML_(valid_client_addr)(arg0, 1, tid, "shmdt"); |
| } |
| |
| void |
| ML_(generic_POST_sys_shmdt) ( ThreadId tid, UWord res, UWord arg0 ) |
| { |
| NSegment const* s = VG_(am_find_nsegment)(arg0); |
| |
| if (s != NULL) { |
| Addr s_start = s->start; |
| SizeT s_len = s->end+1 - s->start; |
| Bool d; |
| |
| vg_assert(s->kind == SkShmC); |
| vg_assert(s->start == arg0); |
| |
| d = VG_(am_notify_munmap)(s_start, s_len); |
| s = NULL; /* s is now invalid */ |
| VG_TRACK( die_mem_munmap, s_start, s_len ); |
| if (d) |
| VG_(discard_translations)( (Addr64)s_start, |
| (ULong)s_len, |
| "ML_(generic_POST_sys_shmdt)" ); |
| } |
| } |
| /* ------ */ |
| |
| void |
| ML_(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 |
| ML_(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; |
| } |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| Generic handler for mmap |
| ------------------------------------------------------------------ */ |
| |
| /* |
| * Although mmap is specified by POSIX and the argument are generally |
| * consistent across platforms the precise details of the low level |
| * argument passing conventions differ. For example: |
| * |
| * - On x86-linux there is mmap (aka old_mmap) which takes the |
| * arguments in a memory block and the offset in bytes; and |
| * mmap2 (aka sys_mmap2) which takes the arguments in the normal |
| * way and the offset in pages. |
| * |
| * - On ppc32-linux there is mmap (aka sys_mmap) which takes the |
| * arguments in the normal way and the offset in bytes; and |
| * mmap2 (aka sys_mmap2) which takes the arguments in the normal |
| * way and the offset in pages. |
| * |
| * - On amd64-linux everything is simple and there is just the one |
| * call, mmap (aka sys_mmap) which takes the arguments in the |
| * normal way and the offset in bytes. |
| * |
| * To cope with all this we provide a generic handler function here |
| * and then each platform implements one or more system call handlers |
| * which call this generic routine after extracting and normalising |
| * the arguments. |
| */ |
| |
| SysRes |
| ML_(generic_PRE_sys_mmap) ( ThreadId tid, |
| UWord arg1, UWord arg2, UWord arg3, |
| UWord arg4, UWord arg5, Off64T arg6 ) |
| { |
| Addr advised; |
| SysRes sres; |
| MapRequest mreq; |
| Bool mreq_ok; |
| |
| if (arg2 == 0) { |
| /* SuSV3 says: If len is zero, mmap() shall fail and no mapping |
| shall be established. */ |
| return VG_(mk_SysRes_Error)( VKI_EINVAL ); |
| } |
| |
| if (!VG_IS_PAGE_ALIGNED(arg1)) { |
| /* zap any misaligned addresses. */ |
| /* SuSV3 says misaligned addresses only cause the MAP_FIXED case |
| to fail. Here, we catch them all. */ |
| return VG_(mk_SysRes_Error)( VKI_EINVAL ); |
| } |
| |
| if (!VG_IS_PAGE_ALIGNED(arg6)) { |
| /* zap any misaligned offsets. */ |
| /* SuSV3 says: The off argument is constrained to be aligned and |
| sized according to the value returned by sysconf() when |
| passed _SC_PAGESIZE or _SC_PAGE_SIZE. */ |
| return VG_(mk_SysRes_Error)( VKI_EINVAL ); |
| } |
| |
| /* Figure out what kind of allocation constraints there are |
| (fixed/hint/any), and ask aspacem what we should do. */ |
| mreq.start = arg1; |
| mreq.len = arg2; |
| if (arg4 & VKI_MAP_FIXED) { |
| mreq.rkind = MFixed; |
| } else |
| if (arg1 != 0) { |
| mreq.rkind = MHint; |
| } else { |
| mreq.rkind = MAny; |
| } |
| |
| /* Enquire ... */ |
| advised = VG_(am_get_advisory)( &mreq, True/*client*/, &mreq_ok ); |
| if (!mreq_ok) { |
| /* Our request was bounced, so we'd better fail. */ |
| return VG_(mk_SysRes_Error)( VKI_EINVAL ); |
| } |
| |
| /* Otherwise we're OK (so far). Install aspacem's choice of |
| address, and let the mmap go through. */ |
| sres = VG_(am_do_mmap_NO_NOTIFY)(advised, arg2, arg3, |
| arg4 | VKI_MAP_FIXED, |
| arg5, arg6); |
| |
| /* A refinement: it may be that the kernel refused aspacem's choice |
| of address. If we were originally asked for a hinted mapping, |
| there is still a last chance: try again at any address. |
| Hence: */ |
| if (mreq.rkind == MHint && sres.isError) { |
| mreq.start = 0; |
| mreq.len = arg2; |
| mreq.rkind = MAny; |
| advised = VG_(am_get_advisory)( &mreq, True/*client*/, &mreq_ok ); |
| if (!mreq_ok) { |
| /* Our request was bounced, so we'd better fail. */ |
| return VG_(mk_SysRes_Error)( VKI_EINVAL ); |
| } |
| /* and try again with the kernel */ |
| sres = VG_(am_do_mmap_NO_NOTIFY)(advised, arg2, arg3, |
| arg4 | VKI_MAP_FIXED, |
| arg5, arg6); |
| } |
| |
| if (!sres.isError) { |
| /* Notify aspacem and the tool. */ |
| ML_(notify_aspacem_and_tool_of_mmap)( |
| (Addr)sres.res, /* addr kernel actually assigned */ |
| arg2, arg3, |
| arg4, /* the original flags value */ |
| arg5, arg6 |
| ); |
| /* Load symbols? */ |
| VG_(di_notify_mmap)( (Addr)sres.res, False/*allow_SkFileV*/ ); |
| } |
| |
| /* Stay sane */ |
| if (!sres.isError && (arg4 & VKI_MAP_FIXED)) |
| vg_assert(sres.res == arg1); |
| |
| return sres; |
| } |
| |
| |
| /* --------------------------------------------------------------------- |
| 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 ML_(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) DEFN_PRE_TEMPLATE(generic, name) |
| #define POST(name) DEFN_POST_TEMPLATE(generic, name) |
| |
| // Combine two 32-bit values into a 64-bit value |
| #define LOHI64(lo,hi) ( (lo) | ((ULong)(hi) << 32) ) |
| |
| //zz //PRE(sys_exit_group, Special) |
| //zz //{ |
| //zz // VG_(core_panic)("syscall exit_group() not caught by the scheduler?!"); |
| //zz //} |
| |
| PRE(sys_exit) |
| { |
| ThreadState* tst; |
| /* simple; just make this thread exit */ |
| PRINT("exit( %d )", ARG1); |
| PRE_REG_READ1(void, "exit", int, exitcode); |
| tst = VG_(get_ThreadState)(tid); |
| /* Set the thread's status to be exiting, then claim that the |
| syscall succeeded. */ |
| tst->exitreason = VgSrc_ExitThread; |
| tst->os_state.exitcode = ARG1; |
| SET_STATUS_Success(0); |
| } |
| |
| PRE(sys_ni_syscall) |
| { |
| PRINT("non-existent syscall! (ni_syscall)"); |
| PRE_REG_READ0(long, "ni_syscall"); |
| SET_STATUS_Failure( VKI_ENOSYS ); |
| } |
| |
| PRE(sys_iopl) |
| { |
| PRINT("sys_iopl ( %d )", ARG1); |
| PRE_REG_READ1(long, "iopl", unsigned long, level); |
| } |
| |
| // XXX: this wrapper is only suitable for 32-bit platforms |
| #if defined(VGP_x86_linux) |
| PRE(sys_lookup_dcookie) |
| { |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (ARG3 != (Addr)NULL) |
| POST_MEM_WRITE( ARG3, RES); |
| } |
| #endif |
| |
| PRE(sys_fsync) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_fsync ( %d )", ARG1); |
| PRE_REG_READ1(long, "fsync", unsigned int, fd); |
| } |
| |
| PRE(sys_fdatasync) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_fdatasync ( %d )", ARG1); |
| PRE_REG_READ1(long, "fdatasync", unsigned int, fd); |
| } |
| |
| PRE(sys_msync) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| /* LiS getpmsg from http://www.gcom.com/home/linux/lis/ */ |
| struct vki_pmsg_strbuf *ctrl; |
| struct vki_pmsg_strbuf *data; |
| *flags |= SfMayBlock; |
| 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; |
| vg_assert(SUCCESS); |
| 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) |
| { |
| /* LiS putpmsg from http://www.gcom.com/home/linux/lis/ */ |
| struct vki_pmsg_strbuf *ctrl; |
| struct vki_pmsg_strbuf *data; |
| *flags |= SfMayBlock; |
| 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) |
| { |
| 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) |
| { |
| 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) |
| { |
| PRINT("sys_chroot ( %p )", ARG1); |
| PRE_REG_READ1(long, "chroot", const char *, path); |
| PRE_MEM_RASCIIZ( "chroot(path)", ARG1 ); |
| } |
| |
| PRE(sys_madvise) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| // Nb: this is different to the glibc version described in the man pages, |
| // which lacks the fifth 'new_address' argument. |
| if (ARG4 & VKI_MREMAP_FIXED) { |
| 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); |
| } else { |
| PRINT("sys_mremap ( %p, %llu, %d, 0x%x )", |
| ARG1, (ULong)ARG2, ARG3, ARG4); |
| PRE_REG_READ4(unsigned long, "mremap", |
| unsigned long, old_addr, unsigned long, old_size, |
| unsigned long, new_size, unsigned long, flags); |
| } |
| SET_STATUS_from_SysRes( |
| do_mremap((Addr)ARG1, ARG2, (Addr)ARG5, ARG3, ARG4, tid) |
| ); |
| } |
| |
| PRE(sys_nice) |
| { |
| PRINT("sys_nice ( %d )", ARG1); |
| PRE_REG_READ1(long, "nice", int, inc); |
| } |
| |
| PRE(sys_mlock) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_mlock ( %p, %llu )", ARG1, (ULong)ARG2); |
| PRE_REG_READ2(long, "mlock", unsigned long, addr, vki_size_t, len); |
| } |
| |
| PRE(sys_munlock) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_munlock ( %p, %llu )", ARG1, (ULong)ARG2); |
| PRE_REG_READ2(long, "munlock", unsigned long, addr, vki_size_t, len); |
| } |
| |
| PRE(sys_mlockall) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_mlockall ( %x )", ARG1); |
| PRE_REG_READ1(long, "mlockall", int, flags); |
| } |
| |
| PRE(sys_setpriority) |
| { |
| PRINT("sys_setpriority ( %d, %d, %d )", ARG1, ARG2, ARG3); |
| PRE_REG_READ3(long, "setpriority", int, which, int, who, int, prio); |
| } |
| |
| PRE(sys_getpriority) |
| { |
| PRINT("sys_getpriority ( %d, %d )", ARG1, ARG2); |
| PRE_REG_READ2(long, "getpriority", int, which, int, who); |
| } |
| |
| // The actual kernel definition of this routine takes a |
| // single 64 bit offset argument. This version is for 32 bit |
| // platforms only and treats the offset as two values - the |
| // kernel relies on stack based argument passing conventions |
| // to merge the two together. |
| PRE(sys_pwrite64) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_sync ( )"); |
| PRE_REG_READ0(long, "sync"); |
| } |
| |
| PRE(sys_fstatfs) |
| { |
| 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) |
| { |
| 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) |
| { |
| PRINT("sys_getsid ( %d )", ARG1); |
| PRE_REG_READ1(long, "getsid", vki_pid_t, pid); |
| } |
| |
| // The actual kernel definition of this routine takes a |
| // single 64 bit offset argument. This version is for 32 bit |
| // platforms only and treats the offset as two values - the |
| // kernel relies on stack based argument passing conventions |
| // to merge the two together. |
| PRE(sys_pread64) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (RES > 0) { |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| } |
| |
| PRE(sys_mknod) |
| { |
| PRINT("sys_mknod ( %p(%s), 0x%x, 0x%x )", ARG1, ARG1, ARG2, ARG3 ); |
| PRE_REG_READ3(long, "mknod", |
| const char *, pathname, int, mode, unsigned, dev); |
| PRE_MEM_RASCIIZ( "mknod(pathname)", ARG1 ); |
| } |
| |
| PRE(sys_flock) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_flock ( %d, %d )", ARG1, ARG2 ); |
| PRE_REG_READ2(long, "flock", unsigned int, fd, unsigned int, operation); |
| } |
| |
| /* This surely isn't remotely generic -- move to linux-specifics? */ |
| PRE(sys_init_module) |
| { |
| *flags |= SfMayBlock; |
| 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_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*); |
| } |
| } |
| |
| static Bool i_am_the_only_thread ( void ) |
| { |
| Int c = VG_(count_living_threads)(); |
| vg_assert(c >= 1); /* stay sane */ |
| return c == 1; |
| } |
| |
| /* Wait until all other threads disappear. */ |
| void VG_(reap_threads)(ThreadId self) |
| { |
| while (!i_am_the_only_thread()) { |
| /* Let other thread(s) run */ |
| VG_(vg_yield)(); |
| VG_(poll_signals)(self); |
| } |
| vg_assert(i_am_the_only_thread()); |
| } |
| |
| // XXX: prototype here seemingly doesn't match the prototype for i386-linux, |
| // but it seems to work nonetheless... |
| PRE(sys_execve) |
| { |
| Char* path = NULL; /* path to executable */ |
| Char** envp = NULL; |
| Char** argv = NULL; |
| Char** arg2copy; |
| Char* launcher_basename = NULL; |
| ThreadState* tst; |
| Int i, j, tot_args; |
| SysRes res; |
| Bool setuid_allowed; |
| |
| 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])" ); |
| |
| vg_assert(VG_(is_valid_tid)(tid)); |
| tst = VG_(get_ThreadState)(tid); |
| |
| /* 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 close to impossible. Instead, we make |
| an effort to check that the execve will work before actually |
| doing it. */ |
| |
| /* Check that the name at least begins in client-accessible storage. */ |
| if (!VG_(am_is_valid_for_client)( ARG1, 1, VKI_PROT_READ )) { |
| SET_STATUS_Failure( VKI_EFAULT ); |
| return; |
| } |
| |
| // Do the important checks: it is a file, is executable, permissions are |
| // ok, etc. We allow setuid executables to run only in the case when |
| // we are not simulating them, that is, they to be run natively. |
| setuid_allowed = VG_(clo_trace_children) ? False : True; |
| res = VG_(pre_exec_check)((const Char*)ARG1, NULL, setuid_allowed); |
| if (res.isError) { |
| SET_STATUS_Failure( res.err ); |
| return; |
| } |
| |
| /* If we're tracing the child, and the launcher name looks bogus |
| (possibly because launcher.c couldn't figure it out, see |
| comments therein) then we have no option but to fail. */ |
| if (VG_(clo_trace_children) |
| && (VG_(name_of_launcher) == NULL |
| || VG_(name_of_launcher)[0] != '/')) { |
| SET_STATUS_Failure( VKI_ECHILD ); /* "No child processes" */ |
| return; |
| } |
| |
| /* After this point, we can't recover if the execve fails. */ |
| VG_(debugLog)(1, "syswrap", "Exec of %s\n", (Char*)ARG1); |
| |
| /* 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_(nuke_all_threads_except)( tid, VgSrc_ExitThread ); |
| VG_(reap_threads)(tid); |
| |
| // Set up the child's exe path. |
| // |
| if (VG_(clo_trace_children)) { |
| |
| // We want to exec the launcher. Get its pre-remembered path. |
| path = VG_(name_of_launcher); |
| // VG_(name_of_launcher) should have been acquired by m_main at |
| // startup. |
| vg_assert(path); |
| |
| launcher_basename = VG_(strrchr)(path, '/'); |
| if (launcher_basename == NULL || launcher_basename[1] == 0) { |
| launcher_basename = path; // hmm, tres dubious |
| } else { |
| launcher_basename++; |
| } |
| |
| } else { |
| path = (Char*)ARG1; |
| } |
| |
| // Set up the child's environment. |
| // |
| // Remove the valgrind-specific stuff from the environment so the |
| // child doesn't get vgpreload_core.so, vgpreload_<tool>.so, etc. |
| // This is done unconditionally, since if we are tracing the child, |
| // the child valgrind will set up the appropriate client environment. |
| // Nb: we make a copy of the environment before trying to mangle it |
| // as it might be in read-only memory (this was bug #101881). |
| // |
| // Then, if tracing the child, set VALGRIND_LIB for it. |
| // |
| if (ARG3 == 0) { |
| envp = NULL; |
| } else { |
| envp = VG_(env_clone)( (Char**)ARG3 ); |
| if (envp == NULL) goto hosed; |
| VG_(env_remove_valgrind_env_stuff)( envp ); |
| } |
| |
| if (VG_(clo_trace_children)) { |
| // Set VALGRIND_LIB in ARG3 (the environment) |
| VG_(env_setenv)( &envp, VALGRIND_LIB, VG_(libdir)); |
| } |
| |
| // Set up the child's args. If not tracing it, they are |
| // simply ARG2. Otherwise, they are |
| // |
| // [launcher_basename] ++ VG_(args_for_valgrind) ++ [ARG1] ++ ARG2[1..] |
| // |
| // except that the first VG_(args_for_valgrind_noexecpass) args |
| // are omitted. |
| // |
| if (!VG_(clo_trace_children)) { |
| argv = (Char**)ARG2; |
| } else { |
| vg_assert( VG_(args_for_valgrind) ); |
| vg_assert( VG_(args_for_valgrind_noexecpass) >= 0 ); |
| vg_assert( VG_(args_for_valgrind_noexecpass) |
| <= VG_(sizeXA)( VG_(args_for_valgrind) ) ); |
| /* how many args in total will there be? */ |
| // launcher basename |
| tot_args = 1; |
| // V's args |
| tot_args += VG_(sizeXA)( VG_(args_for_valgrind) ); |
| tot_args -= VG_(args_for_valgrind_noexecpass); |
| // name of client exe |
| tot_args++; |
| // args for client exe, skipping [0] |
| arg2copy = (Char**)ARG2; |
| if (arg2copy && arg2copy[0]) { |
| for (i = 1; arg2copy[i]; i++) |
| tot_args++; |
| } |
| // allocate |
| argv = VG_(malloc)( (tot_args+1) * sizeof(HChar*) ); |
| if (argv == 0) goto hosed; |
| // copy |
| j = 0; |
| argv[j++] = launcher_basename; |
| for (i = 0; i < VG_(sizeXA)( VG_(args_for_valgrind) ); i++) { |
| if (i < VG_(args_for_valgrind_noexecpass)) |
| continue; |
| argv[j++] = * (HChar**) VG_(indexXA)( VG_(args_for_valgrind), i ); |
| } |
| argv[j++] = (Char*)ARG1; |
| if (arg2copy && arg2copy[0]) |
| for (i = 1; arg2copy[i]; i++) |
| argv[j++] = arg2copy[i]; |
| argv[j++] = NULL; |
| // check |
| vg_assert(j == tot_args+1); |
| } |
| |
| /* 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; |
| |
| 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_zero)(&allsigs, &info) > 0) |
| ; |
| |
| VG_(sigprocmask)(VKI_SIG_SETMASK, &tst->sig_mask, NULL); |
| } |
| |
| if (0) { |
| Char **cpp; |
| VG_(printf)("exec: %s\n", path); |
| for (cpp = argv; cpp && *cpp; cpp++) |
| VG_(printf)("argv: %s\n", *cpp); |
| if (0) |
| for (cpp = envp; cpp && *cpp; cpp++) |
| VG_(printf)("env: %s\n", *cpp); |
| } |
| |
| SET_STATUS_from_SysRes( |
| VG_(do_syscall3)(__NR_execve, (UWord)path, (UWord)argv, (UWord)envp) |
| ); |
| |
| /* If we got here, then the execve failed. We've already made way |
| too much of a mess to continue, so we have to abort. */ |
| hosed: |
| vg_assert(FAILURE); |
| VG_(message)(Vg_UserMsg, "execve(%p(%s), %p, %p) failed, errno %d", |
| ARG1, ARG1, ARG2, ARG3, ERR); |
| 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(sys_execve), " |
| "or work out how to recover."); |
| VG_(exit)(101); |
| } |
| |
| PRE(sys_access) |
| { |
| 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) |
| { |
| PRINT("sys_alarm ( %d )", ARG1); |
| PRE_REG_READ1(unsigned long, "alarm", unsigned int, seconds); |
| } |
| |
| PRE(sys_brk) |
| { |
| Addr brk_limit = VG_(brk_limit); |
| Addr brk_new; |
| |
| /* 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); |
| |
| brk_new = do_brk(ARG1); |
| SET_STATUS_Success( brk_new ); |
| |
| if (brk_new == ARG1) { |
| /* brk() succeeded */ |
| if (brk_new < brk_limit) { |
| /* successfully shrunk the data segment. */ |
| VG_TRACK( die_mem_brk, (Addr)ARG1, |
| brk_limit-ARG1 ); |
| } else |
| if (brk_new > brk_limit) { |
| /* successfully grew the data segment */ |
| VG_TRACK( new_mem_brk, brk_limit, |
| ARG1-brk_limit ); |
| } |
| } else { |
| /* brk() failed */ |
| vg_assert(brk_limit == brk_new); |
| } |
| } |
| |
| PRE(sys_chdir) |
| { |
| PRINT("sys_chdir ( %p(%s) )", ARG1,ARG1); |
| PRE_REG_READ1(long, "chdir", const char *, path); |
| PRE_MEM_RASCIIZ( "chdir(path)", ARG1 ); |
| } |
| |
| PRE(sys_chmod) |
| { |
| PRINT("sys_chmod ( %p(%s), %d )", ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "chmod", const char *, path, vki_mode_t, mode); |
| PRE_MEM_RASCIIZ( "chmod(path)", ARG1 ); |
| } |
| |
| PRE(sys_chown) |
| { |
| PRINT("sys_chown ( %p(%s), 0x%x, 0x%x )", ARG1,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) |
| { |
| PRINT("sys_lchown ( %p(%s), 0x%x, 0x%x )", ARG1,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) |
| { |
| 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 ( (!ML_(fd_allowed)(ARG1, "close", tid, False)) |
| /* If doing -d style logging (which is to fd=2), don't |
| allow that to be closed either. */ |
| || (ARG1 == 2/*stderr*/ && VG_(debugLog_getLevel)() > 0) ) |
| SET_STATUS_Failure( VKI_EBADF ); |
| } |
| |
| POST(sys_close) |
| { |
| if (VG_(clo_track_fds)) record_fd_close(tid, ARG1); |
| } |
| |
| PRE(sys_dup) |
| { |
| PRINT("sys_dup ( %d )", ARG1); |
| PRE_REG_READ1(long, "dup", unsigned int, oldfd); |
| } |
| |
| POST(sys_dup) |
| { |
| vg_assert(SUCCESS); |
| if (!ML_(fd_allowed)(RES, "dup", tid, True)) { |
| VG_(close)(RES); |
| SET_STATUS_Failure( VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| record_fd_open_named(tid, RES); |
| } |
| } |
| |
| PRE(sys_dup2) |
| { |
| PRINT("sys_dup2 ( %d, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "dup2", unsigned int, oldfd, unsigned int, newfd); |
| if (!ML_(fd_allowed)(ARG2, "dup2", tid, True)) |
| SET_STATUS_Failure( VKI_EBADF ); |
| } |
| |
| POST(sys_dup2) |
| { |
| vg_assert(SUCCESS); |
| if (VG_(clo_track_fds)) |
| record_fd_open_named(tid, RES); |
| } |
| |
| PRE(sys_fchdir) |
| { |
| PRINT("sys_fchdir ( %d )", ARG1); |
| PRE_REG_READ1(long, "fchdir", unsigned int, fd); |
| } |
| |
| PRE(sys_fchown) |
| { |
| 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) |
| { |
| PRINT("sys_fchmod ( %d, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "fchmod", unsigned int, fildes, vki_mode_t, mode); |
| } |
| |
| PRE(sys_fcntl) |
| { |
| switch (ARG2) { |
| // These ones ignore ARG3. |
| case VKI_F_GETFD: |
| case VKI_F_GETFL: |
| case VKI_F_GETOWN: |
| case VKI_F_GETSIG: |
| 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: |
| case VKI_F_SETOWN: |
| case VKI_F_SETSIG: |
| 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: |
| # if defined(VGP_x86_linux) |
| 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) |
| *flags |= SfMayBlock; |
| } |
| |
| POST(sys_fcntl) |
| { |
| vg_assert(SUCCESS); |
| if (ARG2 == VKI_F_DUPFD) { |
| if (!ML_(fd_allowed)(RES, "fcntl(DUPFD)", tid, True)) { |
| VG_(close)(RES); |
| SET_STATUS_Failure( VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| record_fd_open_named(tid, RES); |
| } |
| } |
| } |
| |
| // XXX: wrapper only suitable for 32-bit systems |
| PRE(sys_fcntl64) |
| { |
| 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: |
| # if defined(VGP_x86_linux) |
| 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; |
| } |
| |
| # if defined(VGP_x86_linux) |
| if (ARG2 == VKI_F_SETLKW || ARG2 == VKI_F_SETLKW64) |
| *flags |= SfMayBlock; |
| # else |
| if (ARG2 == VKI_F_SETLKW) |
| *flags |= SfMayBlock; |
| # endif |
| } |
| |
| POST(sys_fcntl64) |
| { |
| vg_assert(SUCCESS); |
| if (ARG2 == VKI_F_DUPFD) { |
| if (!ML_(fd_allowed)(RES, "fcntl64(DUPFD)", tid, True)) { |
| VG_(close)(RES); |
| SET_STATUS_Failure( VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| record_fd_open_named(tid, RES); |
| } |
| } |
| } |
| |
| PRE(sys_newfstat) |
| { |
| 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) |
| { |
| 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); |
| |
| SET_STATUS_from_SysRes( VG_(do_syscall0)(__NR_fork) ); |
| |
| if (SUCCESS && RES == 0) { |
| /* child */ |
| VG_(do_atfork_child)(tid); |
| |
| /* restore signal mask */ |
| VG_(sigprocmask)(VKI_SIG_SETMASK, &fork_saved_mask, NULL); |
| |
| /* If --child-silent-after-fork=yes was specified, set the |
| logging file descriptor to an 'impossible' value. This is |
| noticed by send_bytes_to_logging_sink in m_libcprint.c, which |
| duly stops writing any further logging output. */ |
| if (!VG_(logging_to_socket) && VG_(clo_child_silent_after_fork)) |
| VG_(clo_log_fd) = -1; |
| } |
| else |
| if (SUCCESS && RES > 0) { |
| /* parent */ |
| PRINT(" fork: process %d created child %d\n", VG_(getpid)(), RES); |
| |
| /* restore signal mask */ |
| VG_(sigprocmask)(VKI_SIG_SETMASK, &fork_saved_mask, NULL); |
| } |
| } |
| |
| PRE(sys_ftruncate) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_ftruncate ( %d, %ld )", ARG1,ARG2); |
| PRE_REG_READ2(long, "ftruncate", unsigned int, fd, unsigned long, length); |
| } |
| |
| PRE(sys_truncate) |
| { |
| *flags |= SfMayBlock; |
| 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 |
| #if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) |
| PRE(sys_ftruncate64) |
| { |
| *flags |= SfMayBlock; |
| 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); |
| } |
| #endif |
| |
| // XXX: this wrapper is only suitable for 32-bit platforms |
| #if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) |
| PRE(sys_truncate64) |
| { |
| *flags |= SfMayBlock; |
| 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 ); |
| } |
| #endif |
| |
| PRE(sys_getdents) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (RES > 0) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_getdents64) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (RES > 0) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_getgroups) |
| { |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (ARG1 > 0 && RES > 0) |
| POST_MEM_WRITE( ARG2, RES * sizeof(vki_gid_t) ); |
| } |
| |
| PRE(sys_getcwd) |
| { |
| // Comment from linux/fs/dcache.c: |
| // NOTE! The user-level library version returns a character pointer. |
| // The kernel system call just returns the length of the buffer filled |
| // (which includes the ending '\0' character), or a negative error |
| // value. |
| // Is this Linux-specific? If so it should be moved to syswrap-linux.c. |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (RES != (Addr)NULL) |
| POST_MEM_WRITE( ARG1, RES ); |
| } |
| |
| PRE(sys_geteuid) |
| { |
| PRINT("sys_geteuid ( )"); |
| PRE_REG_READ0(long, "geteuid"); |
| } |
| |
| PRE(sys_getegid) |
| { |
| PRINT("sys_getegid ( )"); |
| PRE_REG_READ0(long, "getegid"); |
| } |
| |
| PRE(sys_getgid) |
| { |
| PRINT("sys_getgid ( )"); |
| PRE_REG_READ0(long, "getgid"); |
| } |
| |
| PRE(sys_getpid) |
| { |
| PRINT("sys_getpid ()"); |
| PRE_REG_READ0(long, "getpid"); |
| } |
| |
| PRE(sys_getpgid) |
| { |
| PRINT("sys_getpgid ( %d )", ARG1); |
| PRE_REG_READ1(long, "getpgid", vki_pid_t, pid); |
| } |
| |
| PRE(sys_getpgrp) |
| { |
| PRINT("sys_getpgrp ()"); |
| PRE_REG_READ0(long, "getpgrp"); |
| } |
| |
| PRE(sys_getppid) |
| { |
| PRINT("sys_getppid ()"); |
| PRE_REG_READ0(long, "getppid"); |
| } |
| |
| 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) |
| { |
| 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) |
| { |
| 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) |
| { |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (RES == 0) |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_rusage) ); |
| } |
| |
| PRE(sys_gettimeofday) |
| { |
| 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) |
| { |
| vg_assert(SUCCESS); |
| 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) |
| { |
| 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_getuid) |
| { |
| PRINT("sys_getuid ( )"); |
| PRE_REG_READ0(long, "getuid"); |
| } |
| |
| // XXX: I reckon some of these cases must be x86-specific |
| PRE(sys_ioctl) |
| { |
| *flags |= SfMayBlock; |
| 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_TIOCMGET: |
| PRE_MEM_WRITE( "ioctl(TIOCMGET)", 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_TIOCSERGETLSR: |
| PRE_MEM_WRITE( "ioctl(TIOCSERGETLSR)", ARG3, sizeof(int) ); |
| break; |
| case VKI_TIOCGICOUNT: |
| PRE_MEM_WRITE( "ioctl(TIOCGICOUNT)", ARG3, |
| sizeof(struct vki_serial_icounter_struct) ); |
| 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)", |
| (Addr)&((struct vki_ifconf *)ARG3)->ifc_len, |
| sizeof(((struct vki_ifconf *)ARG3)->ifc_len)); |
| PRE_MEM_READ( "ioctl(SIOCGIFCONF)", |
| (Addr)&((struct vki_ifconf *)ARG3)->vki_ifc_buf, |
| sizeof(((struct vki_ifconf *)ARG3)->vki_ifc_buf)); |
| 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 &= ~SfMayBlock; |
| 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: |
| #if !defined(VGA_ppc32) && !defined(VGA_ppc64) |
| case (VKI_SOUND_PCM_READ_BITS|0x40000000): /* what the fuck ? */ |
| #endif |
| 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; |
| |
| /* linux/soundcard interface (ALSA) */ |
| case VKI_SNDRV_PCM_IOCTL_HW_FREE: |
| case VKI_SNDRV_PCM_IOCTL_HWSYNC: |
| case VKI_SNDRV_PCM_IOCTL_PREPARE: |
| case VKI_SNDRV_PCM_IOCTL_RESET: |
| case VKI_SNDRV_PCM_IOCTL_START: |
| case VKI_SNDRV_PCM_IOCTL_DROP: |
| case VKI_SNDRV_PCM_IOCTL_DRAIN: |
| case VKI_SNDRV_PCM_IOCTL_RESUME: |
| case VKI_SNDRV_PCM_IOCTL_XRUN: |
| case VKI_SNDRV_PCM_IOCTL_UNLINK: |
| case VKI_SNDRV_TIMER_IOCTL_START: |
| case VKI_SNDRV_TIMER_IOCTL_STOP: |
| case VKI_SNDRV_TIMER_IOCTL_CONTINUE: |
| case VKI_SNDRV_TIMER_IOCTL_PAUSE: |
| 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; |
| |
| /* Block devices */ |
| case VKI_BLKROSET: |
| PRE_MEM_READ( "ioctl(BLKROSET)", ARG3, sizeof(int)); |
| break; |
| case VKI_BLKROGET: |
| PRE_MEM_WRITE( "ioctl(BLKROGET)", ARG3, sizeof(int)); |
| break; |
| case VKI_BLKGETSIZE: |
| PRE_MEM_WRITE( "ioctl(BLKGETSIZE)", ARG3, sizeof(unsigned long)); |
| break; |
| case VKI_BLKRASET: |
| break; |
| case VKI_BLKRAGET: |
| PRE_MEM_WRITE( "ioctl(BLKRAGET)", ARG3, sizeof(long)); |
| break; |
| case VKI_BLKFRASET: |
| break; |
| case VKI_BLKFRAGET: |
| PRE_MEM_WRITE( "ioctl(BLKFRAGET)", ARG3, sizeof(long)); |
| break; |
| case VKI_BLKSECTGET: |
| PRE_MEM_WRITE( "ioctl(BLKSECTGET)", ARG3, sizeof(unsigned short)); |
| break; |
| case VKI_BLKSSZGET: |
| PRE_MEM_WRITE( "ioctl(BLKSSZGET)", ARG3, sizeof(int)); |
| break; |
| case VKI_BLKBSZGET: |
| PRE_MEM_WRITE( "ioctl(BLKBSZGET)", ARG3, sizeof(int)); |
| break; |
| case VKI_BLKBSZSET: |
| PRE_MEM_READ( "ioctl(BLKBSZSET)", ARG3, sizeof(int)); |
| break; |
| case VKI_BLKGETSIZE64: |
| PRE_MEM_WRITE( "ioctl(BLKGETSIZE64)", ARG3, sizeof(unsigned long long)); |
| break; |
| |
| /* Hard disks */ |
| case VKI_HDIO_GETGEO: /* 0x0301 */ |
| PRE_MEM_WRITE( "ioctl(HDIO_GETGEO)", ARG3, sizeof(struct vki_hd_geometry)); |
| break; |
| case VKI_HDIO_GET_DMA: /* 0x030b */ |
| PRE_MEM_WRITE( "ioctl(HDIO_GET_DMA)", ARG3, sizeof(long)); |
| break; |
| 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_CDROMREADRAW: /* 0x5314 */ |
| PRE_MEM_READ( "ioctl(CDROMREADRAW)", ARG3, sizeof(struct vki_cdrom_msf)); |
| PRE_MEM_WRITE( "ioctl(CDROMREADRAW)", ARG3, VKI_CD_FRAMESIZE_RAW); |
| 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_GIO_UNIMAP: |
| if ( ARG3 ) { |
| struct vki_unimapdesc *desc = (struct vki_unimapdesc *) ARG3; |
| PRE_MEM_READ( "ioctl(GIO_UNIMAP)", (Addr)&desc->entry_ct, |
| sizeof(unsigned short)); |
| PRE_MEM_READ( "ioctl(GIO_UNIMAP)", (Addr)&desc->entries, |
| sizeof(struct vki_unipair *)); |
| PRE_MEM_WRITE( "ioctl(GIO_UNIMAP).entries", (Addr)desc->entries, |
| desc->entry_ct * sizeof(struct vki_unipair)); |
| } |
| break; |
| case VKI_PIO_UNIMAP: |
| if ( ARG3 ) { |
| struct vki_unimapdesc *desc = (struct vki_unimapdesc *) ARG3; |
| PRE_MEM_READ( "ioctl(GIO_UNIMAP)", (Addr)&desc->entry_ct, |
| sizeof(unsigned short) ); |
| PRE_MEM_READ( "ioctl(GIO_UNIMAP)", (Addr)&desc->entries, |
| sizeof(struct vki_unipair *) ); |
| PRE_MEM_READ( "ioctl(PIO_UNIMAP).entries", (Addr)desc->entries, |
| desc->entry_ct * sizeof(struct vki_unipair) ); |
| } |
| break; |
| case VKI_PIO_UNIMAPCLR: |
| PRE_MEM_READ( "ioctl(GIO_UNIMAP)", ARG3, sizeof(struct vki_unimapinit)); |
| 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; |
| |
| case VKI_KDFONTOP: |
| if ( ARG3 ) { |
| struct vki_console_font_op *op = (struct vki_console_font_op *) ARG3; |
| PRE_MEM_READ( "ioctl(KDFONTOP)", (Addr)op, |
| sizeof(struct vki_console_font_op) ); |
| switch ( op->op ) { |
| case VKI_KD_FONT_OP_SET: |
| PRE_MEM_READ( "ioctl(KDFONTOP,KD_FONT_OP_SET).data", |
| (Addr)op->data, |
| (op->width + 7) / 8 * 32 * op->charcount ); |
| break; |
| case VKI_KD_FONT_OP_GET: |
| if ( op->data ) |
| PRE_MEM_WRITE( "ioctl(KDFONTOP,KD_FONT_OP_GET).data", |
| (Addr)op->data, |
| (op->width + 7) / 8 * 32 * op->charcount ); |
| break; |
| case VKI_KD_FONT_OP_SET_DEFAULT: |
| if ( op->data ) |
| PRE_MEM_RASCIIZ( "ioctl(KDFONTOP,KD_FONT_OP_SET_DEFAULT).data", |
| (Addr)op->data ); |
| break; |
| case VKI_KD_FONT_OP_COPY: |
| break; |
| } |
| } |
| break; |
| |
| case VKI_VT_OPENQRY: |
| PRE_MEM_WRITE( "ioctl(VT_OPENQRY)", ARG3, sizeof(int) ); |
| break; |
| case VKI_VT_GETMODE: |
| PRE_MEM_WRITE( "ioctl(VT_GETMODE)", ARG3, sizeof(struct vki_vt_mode) ); |
| break; |
| case VKI_VT_SETMODE: |
| PRE_MEM_READ( "ioctl(VT_SETMODE)", ARG3, sizeof(struct vki_vt_mode) ); |
| break; |
| case VKI_VT_GETSTATE: |
| PRE_MEM_READ( "ioctl(VT_GETSTATE)", ARG3, sizeof(struct vki_vt_stat) ); |
| PRE_MEM_WRITE( "ioctl(VT_GETSTATE).v_active", |
| (Addr) &(((struct vki_vt_stat*) ARG3)->v_active), |
| sizeof(((struct vki_vt_stat*) ARG3)->v_active)); |
| PRE_MEM_WRITE( "ioctl(VT_GETSTATE).v_state", |
| (Addr) &(((struct vki_vt_stat*) ARG3)->v_state), |
| sizeof(((struct vki_vt_stat*) ARG3)->v_state)); |
| break; |
| case VKI_VT_RELDISP: |
| case VKI_VT_ACTIVATE: |
| case VKI_VT_WAITACTIVE: |
| case VKI_VT_DISALLOCATE: |
| break; |
| case VKI_VT_RESIZE: |
| PRE_MEM_READ( "ioctl(VT_RESIZE)", ARG3, sizeof(struct vki_vt_sizes) ); |
| break; |
| case VKI_VT_RESIZEX: |
| PRE_MEM_READ( "ioctl(VT_RESIZEX)", ARG3, sizeof(struct vki_vt_consize) ); |
| break; |
| case VKI_VT_LOCKSWITCH: |
| case VKI_VT_UNLOCKSWITCH: |
| break; |
| |
| case VKI_USBDEVFS_CONTROL: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_ctrltransfer *vkuc = (struct vki_usbdevfs_ctrltransfer *)ARG3; |
| PRE_MEM_READ( "ioctl(USBDEVFS_CONTROL).bRequestType", (Addr)&vkuc->bRequestType, sizeof(vkuc->bRequestType)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_CONTROL).bRequest", (Addr)&vkuc->bRequest, sizeof(vkuc->bRequest)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_CONTROL).wValue", (Addr)&vkuc->wValue, sizeof(vkuc->wValue)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_CONTROL).wIndex", (Addr)&vkuc->wIndex, sizeof(vkuc->wIndex)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_CONTROL).wLength", (Addr)&vkuc->wLength, sizeof(vkuc->wLength)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_CONTROL).timeout", (Addr)&vkuc->timeout, sizeof(vkuc->timeout)); |
| if (vkuc->bRequestType & 0x80) |
| PRE_MEM_WRITE( "ioctl(USBDEVFS_CONTROL).data", (Addr)vkuc->data, vkuc->wLength); |
| else |
| PRE_MEM_READ( "ioctl(USBDEVFS_CONTROL).data", (Addr)vkuc->data, vkuc->wLength); |
| } |
| break; |
| case VKI_USBDEVFS_BULK: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_bulktransfer *vkub = (struct vki_usbdevfs_bulktransfer *)ARG3; |
| PRE_MEM_READ( "ioctl(USBDEVFS_BULK)", ARG3, sizeof(struct vki_usbdevfs_bulktransfer)); |
| if (vkub->ep & 0x80) |
| PRE_MEM_WRITE( "ioctl(USBDEVFS_BULK).data", (Addr)vkub->data, vkub->len); |
| else |
| PRE_MEM_READ( "ioctl(USBDEVFS_BULK).data", (Addr)vkub->data, vkub->len); |
| break; |
| } |
| case VKI_USBDEVFS_GETDRIVER: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_getdriver *vkugd = (struct vki_usbdevfs_getdriver *) ARG3; |
| PRE_MEM_WRITE( "ioctl(USBDEVFS_GETDRIVER)", (Addr)&vkugd->driver, sizeof(vkugd->driver)); |
| break; |
| } |
| case VKI_USBDEVFS_SUBMITURB: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_urb *vkuu = (struct vki_usbdevfs_urb *)ARG3; |
| |
| /* Not the whole struct needs to be initialized */ |
| PRE_MEM_READ( "ioctl(USBDEVFS_SUBMITURB).ep", (Addr)&vkuu->endpoint, sizeof(vkuu->endpoint)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_SUBMITURB).type", (Addr)&vkuu->type, sizeof(vkuu->type)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_SUBMITURB).flags", (Addr)&vkuu->flags, sizeof(vkuu->flags)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_SUBMITURB).buffer", (Addr)&vkuu->buffer, sizeof(vkuu->buffer)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_SUBMITURB).buffer_length", (Addr)&vkuu->buffer_length, sizeof(vkuu->buffer_length)); |
| PRE_MEM_READ( "ioctl(USBDEVFS_SUBMITURB).usercontext", (Addr)&vkuu->usercontext, sizeof(vkuu->usercontext)); |
| if (vkuu->endpoint & 0x80) |
| PRE_MEM_WRITE( "ioctl(USBDEVFS_URB).buffer", (Addr)vkuu->buffer, vkuu->buffer_length); |
| else |
| PRE_MEM_READ( "ioctl(USBDEVFS_URB).buffer", (Addr)vkuu->buffer, vkuu->buffer_length); |
| /* FIXME: Does not handle all cases this ioctl can do, ISOs are missing. */ |
| break; |
| } |
| case VKI_USBDEVFS_REAPURB: |
| case VKI_USBDEVFS_REAPURBNDELAY: |
| if ( ARG3 ) { |
| PRE_MEM_READ( "ioctl(USBDEVFS_SUBMITURB)", ARG3, sizeof(struct vki_usbdevfs_urb *)); |
| break; |
| } |
| case VKI_USBDEVFS_CONNECTINFO: |
| PRE_MEM_WRITE( "ioctl(USBDEVFS_CONNECTINFO)", ARG3, sizeof(struct vki_usbdevfs_connectinfo)); |
| break; |
| case VKI_USBDEVFS_IOCTL: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_ioctl *vkui = (struct vki_usbdevfs_ioctl *)ARG3; |
| UInt dir2, size2; |
| PRE_MEM_READ("ioctl(USBDEVFS_IOCTL)", (Addr)vkui, sizeof(struct vki_usbdevfs_ioctl)); |
| dir2 = _VKI_IOC_DIR(vkui->ioctl_code); |
| size2 = _VKI_IOC_SIZE(vkui->ioctl_code); |
| if (size2 > 0) { |
| if (dir2 & _VKI_IOC_WRITE) |
| PRE_MEM_READ("ioctl(USBDEVFS_IOCTL).dataWrite", (Addr)vkui->data, size2); |
| else if (dir2 & _VKI_IOC_READ) |
| PRE_MEM_WRITE("ioctl(USBDEVFS_IOCTL).dataRead", (Addr)vkui->data, size2); |
| } |
| } |
| break; |
| |
| /* I2C (/dev/i2c-*) ioctls */ |
| case VKI_I2C_SLAVE: |
| case VKI_I2C_SLAVE_FORCE: |
| case VKI_I2C_TENBIT: |
| case VKI_I2C_PEC: |
| break; |
| case VKI_I2C_FUNCS: |
| PRE_MEM_WRITE( "ioctl(I2C_FUNCS)", ARG3, sizeof(unsigned long) ); |
| 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_sim_hints), "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 && !VG_(clo_xml)) { |
| 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) |
| { |
| vg_assert(SUCCESS); |
| 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_TIOCMGET: |
| POST_MEM_WRITE( ARG3, sizeof(unsigned int) ); |
| 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_TIOCSERGETLSR: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| case VKI_TIOCGICOUNT: |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_serial_icounter_struct) ); |
| 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: |
| #if !defined(VGA_ppc32) && !defined(VGA_ppc64) |
| case (VKI_SOUND_PCM_READ_BITS|0x40000000): /* what the fuck ? */ |
| #endif |
| 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; |
| |
| /* linux/soundcard interface (ALSA) */ |
| case VKI_SNDRV_PCM_IOCTL_HW_FREE: |
| case VKI_SNDRV_PCM_IOCTL_HWSYNC: |
| case VKI_SNDRV_PCM_IOCTL_PREPARE: |
| case VKI_SNDRV_PCM_IOCTL_RESET: |
| case VKI_SNDRV_PCM_IOCTL_START: |
| case VKI_SNDRV_PCM_IOCTL_DROP: |
| case VKI_SNDRV_PCM_IOCTL_DRAIN: |
| case VKI_SNDRV_PCM_IOCTL_RESUME: |
| case VKI_SNDRV_PCM_IOCTL_XRUN: |
| case VKI_SNDRV_PCM_IOCTL_UNLINK: |
| case VKI_SNDRV_TIMER_IOCTL_START: |
| case VKI_SNDRV_TIMER_IOCTL_STOP: |
| case VKI_SNDRV_TIMER_IOCTL_CONTINUE: |
| case VKI_SNDRV_TIMER_IOCTL_PAUSE: |
| 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; |
| |
| /* Block devices */ |
| case VKI_BLKROSET: |
| break; |
| case VKI_BLKROGET: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_BLKGETSIZE: |
| POST_MEM_WRITE(ARG3, sizeof(unsigned long)); |
| break; |
| case VKI_BLKRASET: |
| break; |
| case VKI_BLKRAGET: |
| POST_MEM_WRITE(ARG3, sizeof(long)); |
| break; |
| case VKI_BLKFRASET: |
| break; |
| case VKI_BLKFRAGET: |
| POST_MEM_WRITE(ARG3, sizeof(long)); |
| break; |
| case VKI_BLKSECTGET: |
| POST_MEM_WRITE(ARG3, sizeof(unsigned short)); |
| break; |
| case VKI_BLKSSZGET: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_BLKBSZGET: |
| POST_MEM_WRITE(ARG3, sizeof(int)); |
| break; |
| case VKI_BLKBSZSET: |
| break; |
| case VKI_BLKGETSIZE64: |
| POST_MEM_WRITE(ARG3, sizeof(unsigned long long)); |
| break; |
| |
| /* Hard disks */ |
| case VKI_HDIO_GETGEO: /* 0x0301 */ |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_hd_geometry)); |
| break; |
| case VKI_HDIO_GET_DMA: /* 0x030b */ |
| POST_MEM_WRITE(ARG3, sizeof(long)); |
| break; |
| 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_tocentry)); |
| 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_CDROMREADRAW: |
| POST_MEM_WRITE(ARG3, VKI_CD_FRAMESIZE_RAW); |
| 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_GIO_UNIMAP: |
| if ( ARG3 ) { |
| struct vki_unimapdesc *desc = (struct vki_unimapdesc *) ARG3; |
| POST_MEM_WRITE( (Addr)&desc->entry_ct, sizeof(desc->entry_ct)); |
| POST_MEM_WRITE( (Addr)desc->entries, |
| desc->entry_ct * sizeof(struct vki_unipair) ); |
| } |
| break; |
| case VKI_PIO_UNIMAP: |
| break; |
| case VKI_PIO_UNIMAPCLR: |
| 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; |
| |
| case VKI_KDFONTOP: |
| if ( ARG3 ) { |
| struct vki_console_font_op *op = (struct vki_console_font_op *) ARG3; |
| switch ( op->op ) { |
| case VKI_KD_FONT_OP_SET: |
| break; |
| case VKI_KD_FONT_OP_GET: |
| if ( op->data ) |
| POST_MEM_WRITE( (Addr) op->data, |
| (op->width + 7) / 8 * 32 * op->charcount ); |
| break; |
| case VKI_KD_FONT_OP_SET_DEFAULT: |
| break; |
| case VKI_KD_FONT_OP_COPY: |
| break; |
| } |
| POST_MEM_WRITE( (Addr) op, sizeof(*op)); |
| } |
| break; |
| |
| case VKI_VT_OPENQRY: |
| POST_MEM_WRITE( ARG3, sizeof(int) ); |
| break; |
| case VKI_VT_GETMODE: |
| POST_MEM_WRITE( ARG3, sizeof(struct vki_vt_mode) ); |
| break; |
| case VKI_VT_SETMODE: |
| break; |
| case VKI_VT_GETSTATE: |
| POST_MEM_WRITE( (Addr) &(((struct vki_vt_stat*) ARG3)->v_active), |
| sizeof(((struct vki_vt_stat*) ARG3)->v_active) ); |
| POST_MEM_WRITE( (Addr) &(((struct vki_vt_stat*) ARG3)->v_state), |
| sizeof(((struct vki_vt_stat*) ARG3)->v_state) ); |
| break; |
| case VKI_VT_RELDISP: |
| case VKI_VT_ACTIVATE: |
| case VKI_VT_WAITACTIVE: |
| case VKI_VT_DISALLOCATE: |
| break; |
| case VKI_VT_RESIZE: |
| break; |
| case VKI_VT_RESIZEX: |
| break; |
| case VKI_VT_LOCKSWITCH: |
| case VKI_VT_UNLOCKSWITCH: |
| break; |
| |
| case VKI_USBDEVFS_CONTROL: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_ctrltransfer *vkuc = (struct vki_usbdevfs_ctrltransfer *)ARG3; |
| if (vkuc->bRequestType & 0x80) |
| POST_MEM_WRITE((Addr)vkuc->data, RES); |
| break; |
| } |
| case VKI_USBDEVFS_BULK: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_bulktransfer *vkub = (struct vki_usbdevfs_bulktransfer *)ARG3; |
| if (vkub->ep & 0x80) |
| POST_MEM_WRITE((Addr)vkub->data, RES); |
| break; |
| } |
| case VKI_USBDEVFS_GETDRIVER: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_getdriver *vkugd = (struct vki_usbdevfs_getdriver *)ARG3; |
| POST_MEM_WRITE((Addr)&vkugd->driver, sizeof(vkugd->driver)); |
| break; |
| } |
| case VKI_USBDEVFS_REAPURB: |
| case VKI_USBDEVFS_REAPURBNDELAY: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_urb **vkuu = (struct vki_usbdevfs_urb**)ARG3; |
| if (!*vkuu) |
| break; |
| POST_MEM_WRITE((Addr) &((*vkuu)->status),sizeof((*vkuu)->status)); |
| if ((*vkuu)->endpoint & 0x80) |
| POST_MEM_WRITE((Addr)(*vkuu)->buffer, (*vkuu)->actual_length); |
| break; |
| } |
| case VKI_USBDEVFS_CONNECTINFO: |
| POST_MEM_WRITE(ARG3, sizeof(struct vki_usbdevfs_connectinfo)); |
| break; |
| case VKI_USBDEVFS_IOCTL: |
| if ( ARG3 ) { |
| struct vki_usbdevfs_ioctl *vkui = (struct vki_usbdevfs_ioctl *)ARG3; |
| UInt dir2, size2; |
| dir2 = _VKI_IOC_DIR(vkui->ioctl_code); |
| size2 = _VKI_IOC_SIZE(vkui->ioctl_code); |
| if (size2 > 0) { |
| if (dir2 & _VKI_IOC_READ) |
| POST_MEM_WRITE((Addr)vkui->data, size2); |
| } |
| } |
| break; |
| |
| /* I2C (/dev/i2c-*) ioctls */ |
| case VKI_I2C_SLAVE: |
| case VKI_I2C_SLAVE_FORCE: |
| case VKI_I2C_TENBIT: |
| case VKI_I2C_PEC: |
| break; |
| case VKI_I2C_FUNCS: |
| POST_MEM_WRITE( ARG3, sizeof(unsigned long) ); |
| 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 ML_(do_sigkill)(Int pid, Int tgid) |
| { |
| ThreadState *tst; |
| ThreadId tid; |
| |
| if (pid <= 0) |
| return False; |
| |
| tid = VG_(lwpid_to_vgtid)(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_(get_thread_out_of_syscall)(tid); |
| } |
| |
| return True; |
| } |
| |
| PRE(sys_kill) |
| { |
| PRINT("sys_kill ( %d, %d )", ARG1,ARG2); |
| PRE_REG_READ2(long, "kill", int, pid, int, sig); |
| if (!ML_(client_signal_OK)(ARG2)) { |
| SET_STATUS_Failure( 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 && ML_(do_sigkill)(ARG1, -1)) |
| SET_STATUS_Success(0); |
| else |
| SET_STATUS_from_SysRes( VG_(do_syscall2)(SYSNO, ARG1, ARG2) ); |
| |
| if (VG_(clo_trace_signals)) |
| VG_(message)(Vg_DebugMsg, "kill: sent signal %d to pid %d", |
| ARG2, ARG1); |
| |
| /* This kill might have given us a pending signal. Ask for a check once |
| the syscall is done. */ |
| *flags |= SfPollAfter; |
| } |
| |
| PRE(sys_link) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_link ( %p(%s), %p(%s) )", ARG1,ARG1,ARG2,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_newlstat) |
| { |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (RES == 0) { |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_stat) ); |
| } |
| } |
| |
| PRE(sys_mkdir) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_mkdir ( %p(%s), %d )", ARG1,ARG1,ARG2); |
| PRE_REG_READ2(long, "mkdir", const char *, pathname, int, mode); |
| PRE_MEM_RASCIIZ( "mkdir(pathname)", ARG1 ); |
| } |
| |
| PRE(sys_mprotect) |
| { |
| 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 (!ML_(valid_client_addr)(ARG1, ARG2, tid, "mprotect")) { |
| SET_STATUS_Failure( VKI_ENOMEM ); |
| } |
| else |
| if (ARG3 & (VKI_PROT_GROWSDOWN|VKI_PROT_GROWSUP)) { |
| /* Deal with mprotects on growable stack areas. |
| |
| The critical files to understand all this are mm/mprotect.c |
| in the kernel and sysdeps/unix/sysv/linux/dl-execstack.c in |
| glibc. |
| |
| The kernel provides PROT_GROWSDOWN and PROT_GROWSUP which |
| round the start/end address of mprotect to the start/end of |
| the underlying vma and glibc uses that as an easy way to |
| change the protection of the stack by calling mprotect on the |
| last page of the stack with PROT_GROWSDOWN set. |
| |
| The sanity check provided by the kernel is that the vma must |
| have the VM_GROWSDOWN/VM_GROWSUP flag set as appropriate. */ |
| UInt grows = ARG3 & (VKI_PROT_GROWSDOWN|VKI_PROT_GROWSUP); |
| NSegment const *aseg = VG_(am_find_nsegment)(ARG1); |
| NSegment const *rseg; |
| |
| vg_assert(aseg); |
| |
| if (grows == VKI_PROT_GROWSDOWN) { |
| rseg = VG_(am_next_nsegment)( (NSegment*)aseg, False/*backwards*/ ); |
| if (rseg && |
| rseg->kind == SkResvn && |
| rseg->smode == SmUpper && |
| rseg->end+1 == aseg->start) { |
| Addr end = ARG1 + ARG2; |
| ARG1 = aseg->start; |
| ARG2 = end - aseg->start; |
| ARG3 &= ~VKI_PROT_GROWSDOWN; |
| } else { |
| SET_STATUS_Failure( VKI_EINVAL ); |
| } |
| } else if (grows == VKI_PROT_GROWSUP) { |
| rseg = VG_(am_next_nsegment)( (NSegment*)aseg, True/*forwards*/ ); |
| if (rseg && |
| rseg->kind == SkResvn && |
| rseg->smode == SmLower && |
| aseg->end+1 == rseg->start) { |
| ARG2 = aseg->end - ARG1 + 1; |
| ARG3 &= ~VKI_PROT_GROWSUP; |
| } else { |
| SET_STATUS_Failure( VKI_EINVAL ); |
| } |
| } else { |
| /* both GROWSUP and GROWSDOWN */ |
| SET_STATUS_Failure( VKI_EINVAL ); |
| } |
| } |
| } |
| |
| POST(sys_mprotect) |
| { |
| Addr a = ARG1; |
| SizeT len = ARG2; |
| Int prot = ARG3; |
| Bool rr = toBool(prot & VKI_PROT_READ); |
| Bool ww = toBool(prot & VKI_PROT_WRITE); |
| Bool xx = toBool(prot & VKI_PROT_EXEC); |
| Bool d; |
| |
| page_align_addr_and_len(&a, &len); |
| d = VG_(am_notify_mprotect)(a, len, prot); |
| VG_TRACK( change_mem_mprotect, a, len, rr, ww, xx ); |
| VG_(di_notify_mprotect)( a, len, prot ); |
| if (d) |
| VG_(discard_translations)( (Addr64)a, (ULong)len, |
| "POST(sys_mprotect)" ); |
| } |
| |
| PRE(sys_munmap) |
| { |
| if (0) VG_(printf)(" munmap( %p )\n", ARG1); |
| PRINT("sys_munmap ( %p, %llu )", ARG1,(ULong)ARG2); |
| PRE_REG_READ2(long, "munmap", unsigned long, start, vki_size_t, length); |
| |
| if (!ML_(valid_client_addr)(ARG1, ARG2, tid, "munmap")) |
| SET_STATUS_Failure( VKI_EINVAL ); |
| } |
| |
| POST(sys_munmap) |
| { |
| Addr a = ARG1; |
| SizeT len = ARG2; |
| Bool d; |
| |
| page_align_addr_and_len(&a, &len); |
| d = VG_(am_notify_munmap)(a, len); |
| VG_TRACK( die_mem_munmap, a, len ); |
| VG_(di_notify_munmap)( a, len ); |
| if (d) |
| VG_(discard_translations)( (Addr64)a, (ULong)len, |
| "POST(sys_munmap)" ); |
| } |
| |
| PRE(sys_mincore) |
| { |
| 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, VG_PGROUNDUP(ARG2) / VKI_PAGE_SIZE ); |
| } |
| POST(sys_mincore) |
| { |
| POST_MEM_WRITE( ARG3, VG_PGROUNDUP(ARG2) / VKI_PAGE_SIZE ); |
| } |
| |
| PRE(sys_nanosleep) |
| { |
| *flags |= SfMayBlock|SfPostOnFail; |
| 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) |
| { |
| vg_assert(SUCCESS || FAILURE); |
| if (ARG2 != 0 && FAILURE && ERR == VKI_EINTR) |
| POST_MEM_WRITE( ARG2, sizeof(struct vki_timespec) ); |
| } |
| |
| PRE(sys_open) |
| { |
| HChar name[30]; |
| SysRes sres; |
| |
| 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 ); |
| |
| /* Handle the case where the open is of /proc/self/cmdline or |
| /proc/<pid>/cmdline, and just give it a copy of the fd for the |
| fake file we cooked up at startup (in m_main). Also, seek the |
| cloned fd back to the start. */ |
| |
| VG_(sprintf)(name, "/proc/%d/cmdline", VG_(getpid)()); |
| if (ML_(safe_to_deref)( (void*)ARG1, 1 ) |
| && (VG_(strcmp)((Char *)ARG1, name) == 0 |
| || VG_(strcmp)((Char *)ARG1, "/proc/self/cmdline") == 0)) { |
| sres = VG_(dup)( VG_(cl_cmdline_fd) ); |
| SET_STATUS_from_SysRes( sres ); |
| if (!sres.isError) { |
| OffT off = VG_(lseek)( sres.res, 0, VKI_SEEK_SET ); |
| if (off < 0) |
| SET_STATUS_Failure( VKI_EMFILE ); |
| } |
| return; |
| } |
| |
| /* Otherwise handle normally */ |
| *flags |= SfMayBlock; |
| } |
| |
| POST(sys_open) |
| { |
| vg_assert(SUCCESS); |
| if (!ML_(fd_allowed)(RES, "open", tid, True)) { |
| VG_(close)(RES); |
| SET_STATUS_Failure( VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| ML_(record_fd_open_with_given_name)(tid, RES, (Char*)ARG1); |
| } |
| } |
| |
| PRE(sys_read) |
| { |
| *flags |= SfMayBlock; |
| 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 (!ML_(fd_allowed)(ARG1, "read", tid, False)) |
| SET_STATUS_Failure( VKI_EBADF ); |
| else |
| PRE_MEM_WRITE( "read(buf)", ARG2, ARG3 ); |
| } |
| |
| POST(sys_read) |
| { |
| vg_assert(SUCCESS); |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_write) |
| { |
| Bool ok; |
| *flags |= SfMayBlock; |
| 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); |
| /* check to see if it is allowed. If not, try for an exemption from |
| --sim-hints=enable-outer (used for self hosting). */ |
| ok = ML_(fd_allowed)(ARG1, "write", tid, False); |
| if (!ok && ARG1 == 2/*stderr*/ |
| && VG_(strstr)(VG_(clo_sim_hints),"enable-outer")) |
| ok = True; |
| if (!ok) |
| SET_STATUS_Failure( VKI_EBADF ); |
| else |
| PRE_MEM_READ( "write(buf)", ARG2, ARG3 ); |
| } |
| |
| PRE(sys_creat) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| vg_assert(SUCCESS); |
| if (!ML_(fd_allowed)(RES, "creat", tid, True)) { |
| VG_(close)(RES); |
| SET_STATUS_Failure( VKI_EMFILE ); |
| } else { |
| if (VG_(clo_track_fds)) |
| ML_(record_fd_open_with_given_name)(tid, RES, (Char*)ARG1); |
| } |
| } |
| |
| PRE(sys_poll) |
| { |
| /* 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; |
| *flags |= SfMayBlock; |
| PRINT("sys_poll ( %p, %d, %d )\n", ARG1,ARG2,ARG3); |
| PRE_REG_READ3(long, "poll", |
| struct vki_pollfd *, ufds, unsigned int, nfds, long, timeout); |
| |
| for (i = 0; i < ARG2; i++) { |
| PRE_MEM_READ( "poll(ufds.fd)", |
| (Addr)(&ufds[i].fd), sizeof(ufds[i].fd) ); |
| PRE_MEM_READ( "poll(ufds.events)", |
| (Addr)(&ufds[i].events), sizeof(ufds[i].events) ); |
| PRE_MEM_WRITE( "poll(ufds.reventss)", |
| (Addr)(&ufds[i].revents), sizeof(ufds[i].revents) ); |
| } |
| } |
| |
| POST(sys_poll) |
| { |
| if (RES > 0) { |
| UInt i; |
| struct vki_pollfd* ufds = (struct vki_pollfd *)ARG1; |
| for (i = 0; i < ARG2; i++) |
| POST_MEM_WRITE( (Addr)(&ufds[i].revents), sizeof(ufds[i].revents) ); |
| } |
| } |
| |
| PRE(sys_readlink) |
| { |
| HChar name[25]; |
| Word saved = SYSNO; |
| |
| PRINT("sys_readlink ( %p(%s), %p, %llu )", ARG1,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. |
| */ |
| VG_(sprintf)(name, "/proc/%d/exe", VG_(getpid)()); |
| if (ML_(safe_to_deref)((void*)ARG1, 1) |
| && (VG_(strcmp)((Char *)ARG1, name) == 0 |
| || VG_(strcmp)((Char *)ARG1, "/proc/self/exe") == 0)) { |
| VG_(sprintf)(name, "/proc/self/fd/%d", VG_(cl_exec_fd)); |
| SET_STATUS_from_SysRes( VG_(do_syscall3)(saved, (UWord)name, |
| ARG2, ARG3)); |
| } else { |
| /* Normal case */ |
| SET_STATUS_from_SysRes( VG_(do_syscall3)(saved, ARG1, ARG2, ARG3)); |
| } |
| |
| if (SUCCESS && RES > 0) |
| POST_MEM_WRITE( ARG2, RES ); |
| } |
| |
| PRE(sys_readv) |
| { |
| Int i; |
| struct vki_iovec * vec; |
| *flags |= SfMayBlock; |
| 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 (!ML_(fd_allowed)(ARG1, "readv", tid, False)) { |
| SET_STATUS_Failure( 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) |
| { |
| vg_assert(SUCCESS); |
| 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) |
| { |
| PRINT("sys_rename ( %p(%s), %p(%s) )", ARG1,ARG1,ARG2,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) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_rmdir ( %p(%s) )", ARG1,ARG1); |
| PRE_REG_READ1(long, "rmdir", const char *, pathname); |
| PRE_MEM_RASCIIZ( "rmdir(pathname)", ARG1 ); |
| } |
| |
| PRE(sys_select) |
| { |
| *flags |= SfMayBlock; |
| 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 vki_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_setgid) |
| { |
| PRINT("sys_setgid ( %d )", ARG1); |
| PRE_REG_READ1(long, "setgid", vki_gid_t, gid); |
| } |
| |
| PRE(sys_setsid) |
| { |
| PRINT("sys_setsid ( )"); |
| PRE_REG_READ0(long, "setsid"); |
| } |
| |
| PRE(sys_setgroups) |
| { |
| 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) |
| { |
| PRINT("setpgid ( %d, %d )", ARG1, ARG2); |
| PRE_REG_READ2(long, "setpgid", vki_pid_t, pid, vki_pid_t, pgid); |
| } |
| |
| PRE(sys_setregid) |
| { |
| PRINT("sys_setregid ( %d, %d )", ARG1, ARG2); |
| PRE_REG_READ2(long, "setregid", vki_gid_t, rgid, vki_gid_t, egid); |
| } |
| |
| PRE(sys_setreuid) |
| { |
| 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) |
| { |
| 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_STATUS_Failure( VKI_EPERM ); |
| } |
| else { |
| VG_(fd_soft_limit) = ((struct vki_rlimit *)ARG2)->rlim_cur; |
| SET_STATUS_Success( 0 ); |
| } |
| } |
| else if (ARG1 == VKI_RLIMIT_DATA) { |
| if (((struct vki_rlimit *)ARG2)->rlim_cur > VG_(client_rlimit_data).rlim_max || |
| ((struct vki_rlimit *)ARG2)->rlim_max > VG_(client_rlimit_data).rlim_max) { |
| SET_STATUS_Failure( VKI_EPERM ); |
| } |
| else { |
| VG_(client_rlimit_data) = *(struct vki_rlimit *)ARG2; |
| SET_STATUS_Success( 0 ); |
| } |
| } |
| else if (ARG1 == VKI_RLIMIT_STACK && tid == 1) { |
| if (((struct vki_rlimit *)ARG2)->rlim_cur > VG_(client_rlimit_stack).rlim_max || |
| ((struct vki_rlimit *)ARG2)->rlim_max > VG_(client_rlimit_stack).rlim_max) { |
| SET_STATUS_Failure( VKI_EPERM ); |
| } |
| else { |
| VG_(threads)[tid].client_stack_szB = ((struct vki_rlimit *)ARG2)->rlim_cur; |
| VG_(client_rlimit_stack) = *(struct vki_rlimit *)ARG2; |
| SET_STATUS_Success( 0 ); |
| } |
| } |
| } |
| |
| PRE(sys_setuid) |
| { |
| PRINT("sys_setuid ( %d )", ARG1); |
| PRE_REG_READ1(long, "setuid", vki_uid_t, uid); |
| } |
| |
| PRE(sys_newstat) |
| { |
| 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) |
| { |
| PRINT("sys_statfs ( %p(%s), %p )",ARG1,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) |
| { |
| PRINT("sys_statfs64 ( %p(%s), %llu, %p )",ARG1,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) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_symlink ( %p(%s), %p(%s) )",ARG1,ARG1,ARG2,ARG2); |
| PRE_REG_READ2(long, "symlink", const char *, oldpath, const char *, newpath); |
| PRE_MEM_RASCIIZ( "symlink(oldpath)", ARG1 ); |
| PRE_MEM_RASCIIZ( "symlink(newpath)", ARG2 ); |
| } |
| |
| PRE(sys_time) |
| { |
| /* 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) |
| { |
| PRINT("sys_times ( %p )", ARG1); |
| PRE_REG_READ1(long, "times", struct tms *, buf); |
| if (ARG1 != 0) { |
| 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) |
| { |
| PRINT("sys_umask ( %d )", ARG1); |
| PRE_REG_READ1(long, "umask", int, mask); |
| } |
| |
| PRE(sys_unlink) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_unlink ( %p(%s) )", ARG1,ARG1); |
| PRE_REG_READ1(long, "unlink", const char *, pathname); |
| PRE_MEM_RASCIIZ( "unlink(pathname)", ARG1 ); |
| } |
| |
| PRE(sys_newuname) |
| { |
| 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_waitpid) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| *flags |= SfMayBlock; |
| 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) |
| { |
| Int i; |
| struct vki_iovec * vec; |
| *flags |= SfMayBlock; |
| 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 (!ML_(fd_allowed)(ARG1, "writev", tid, False)) { |
| SET_STATUS_Failure( 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) |
| { |
| PRINT("sys_utimes ( %p(%s), %p )", ARG1,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_acct) |
| { |
| PRINT("sys_acct ( %p(%s) )", ARG1,ARG1); |
| PRE_REG_READ1(long, "acct", const char *, filename); |
| PRE_MEM_RASCIIZ( "acct(filename)", ARG1 ); |
| } |
| |
| PRE(sys_pause) |
| { |
| *flags |= SfMayBlock; |
| PRINT("sys_pause ( )"); |
| PRE_REG_READ0(long, "pause"); |
| } |
| |
| // XXX: x86-specific |
| PRE(sys_sigaltstack) |
| { |
| PRINT("sigaltstack ( %p, %p )",ARG1,ARG2); |
| PRE_REG_READ2(int, "sigaltstack", |
| const vki_stack_t *, ss, vki_stack_t *, oss); |
| if (ARG1 != 0) { |
| const vki_stack_t *ss = (vki_stack_t *)ARG1; |
| PRE_MEM_READ( "sigaltstack(ss)", (Addr)&ss->ss_sp, sizeof(ss->ss_sp) ); |
| PRE_MEM_READ( "sigaltstack(ss)", (Addr)&ss->ss_flags, sizeof(ss->ss_flags) ); |
| PRE_MEM_READ( "sigaltstack(ss)", (Addr)&ss->ss_size, sizeof(ss->ss_size) ); |
| } |
| if (ARG2 != 0) { |
| PRE_MEM_WRITE( "sigaltstack(oss)", ARG2, sizeof(vki_stack_t) ); |
| } |
| |
| SET_STATUS_from_SysRes( |
| VG_(do_sys_sigaltstack) (tid, (vki_stack_t*)ARG1, |
| (vki_stack_t*)ARG2) |
| ); |
| } |
| POST(sys_sigaltstack) |
| { |
| vg_assert(SUCCESS); |
| if (RES == 0 && ARG2 != 0) |
| POST_MEM_WRITE( ARG2, sizeof(vki_stack_t)); |
| } |
| |
| #undef PRE |
| #undef POST |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |
| |