sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
njn | 87ef6a6 | 2003-08-14 15:23:55 +0000 | [diff] [blame] | 3 | /*--- Handle system calls. vg_syscalls.c ---*/ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4 | /*--------------------------------------------------------------------*/ |
| 5 | |
| 6 | /* |
njn | c953984 | 2002-10-02 13:26:35 +0000 | [diff] [blame] | 7 | This file is part of Valgrind, an extensible x86 protected-mode |
| 8 | emulator for monitoring program execution on x86-Unixes. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 9 | |
njn | 0e1b514 | 2003-04-15 14:58:06 +0000 | [diff] [blame] | 10 | Copyright (C) 2000-2003 Julian Seward |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 11 | jseward@acm.org |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 12 | |
| 13 | This program is free software; you can redistribute it and/or |
| 14 | modify it under the terms of the GNU General Public License as |
| 15 | published by the Free Software Foundation; either version 2 of the |
| 16 | License, or (at your option) any later version. |
| 17 | |
| 18 | This program is distributed in the hope that it will be useful, but |
| 19 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 21 | General Public License for more details. |
| 22 | |
| 23 | You should have received a copy of the GNU General Public License |
| 24 | along with this program; if not, write to the Free Software |
| 25 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 26 | 02111-1307, USA. |
| 27 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 28 | The GNU General Public License is contained in the file COPYING. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 29 | */ |
| 30 | |
| 31 | #include "vg_include.h" |
| 32 | |
| 33 | /* vg_unsafe.h should NOT be included into any file except this |
| 34 | one. */ |
| 35 | #include "vg_unsafe.h" |
| 36 | |
| 37 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 38 | /* All system calls are channelled through here, doing two things: |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 39 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 40 | * notify the skin of the memory events (reads, writes) happening |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 41 | |
| 42 | * perform the syscall, usually by passing it along to the kernel |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 43 | unmodified. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 44 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 45 | A magical piece of assembly code, VG_(do_syscall)(), in vg_syscall.S |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 46 | does the tricky bit of passing a syscall to the kernel, whilst |
| 47 | having the simulator retain control. |
| 48 | */ |
| 49 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 50 | #define SYSCALL_TRACK(fn, args...) VG_TRACK(fn, Vg_CoreSysCall, ## args) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 51 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 52 | #define MAYBE_PRINTF(format, args...) \ |
| 53 | if (VG_(clo_trace_syscalls)) \ |
| 54 | VG_(printf)(format, ## args) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 55 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 56 | |
| 57 | /* --------------------------------------------------------------------- |
| 58 | A simple atfork() facility for Valgrind's internal use |
| 59 | ------------------------------------------------------------------ */ |
| 60 | |
| 61 | struct atfork { |
| 62 | vg_atfork_t pre; |
| 63 | vg_atfork_t parent; |
| 64 | vg_atfork_t child; |
| 65 | }; |
| 66 | |
| 67 | #define VG_MAX_ATFORK 10 |
| 68 | |
| 69 | static struct atfork atforks[VG_MAX_ATFORK]; |
| 70 | static Int n_atfork; |
| 71 | |
| 72 | void VG_(atfork)(vg_atfork_t pre, vg_atfork_t parent, vg_atfork_t child) |
| 73 | { |
| 74 | Int i; |
| 75 | |
| 76 | for(i = 0; i < n_atfork; i++) { |
| 77 | if (atforks[i].pre == pre && |
| 78 | atforks[i].parent == parent && |
| 79 | atforks[i].child == child) |
| 80 | return; |
| 81 | } |
| 82 | |
| 83 | if (n_atfork >= VG_MAX_ATFORK) |
| 84 | VG_(core_panic)("Too many VG_(atfork) handlers requested: raise VG_MAX_ATFORK"); |
| 85 | |
| 86 | atforks[n_atfork].pre = pre; |
| 87 | atforks[n_atfork].parent = parent; |
| 88 | atforks[n_atfork].child = child; |
| 89 | |
| 90 | n_atfork++; |
| 91 | } |
| 92 | |
| 93 | static void do_atfork_pre(ThreadId tid) |
| 94 | { |
| 95 | Int i; |
| 96 | |
| 97 | for(i = 0; i < n_atfork; i++) |
| 98 | if (atforks[i].pre != NULL) |
| 99 | (*atforks[i].pre)(tid); |
| 100 | } |
| 101 | |
| 102 | static void do_atfork_parent(ThreadId tid) |
| 103 | { |
| 104 | Int i; |
| 105 | |
| 106 | for(i = 0; i < n_atfork; i++) |
| 107 | if (atforks[i].parent != NULL) |
| 108 | (*atforks[i].parent)(tid); |
| 109 | } |
| 110 | |
| 111 | static void do_atfork_child(ThreadId tid) |
| 112 | { |
| 113 | Int i; |
| 114 | |
| 115 | for(i = 0; i < n_atfork; i++) |
| 116 | if (atforks[i].child != NULL) |
| 117 | (*atforks[i].child)(tid); |
| 118 | } |
| 119 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 120 | /* --------------------------------------------------------------------- |
| 121 | Doing mmap, munmap, mremap, mprotect |
| 122 | ------------------------------------------------------------------ */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 123 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 124 | // Nb: this isn't done as precisely as possible, but it seems that programs |
| 125 | // are usually sufficiently well-behaved that the more obscure corner cases |
| 126 | // aren't important. Various comments in the few functions below give more |
| 127 | // details... njn 2002-Sep-17 |
| 128 | |
| 129 | /* AFAICT from kernel sources (mm/mprotect.c) and general experimentation, |
| 130 | munmap, mprotect (and mremap??) work at the page level. So addresses |
| 131 | and lengths must be adjusted for this. */ |
| 132 | |
| 133 | /* Mash around start and length so that the area exactly covers |
| 134 | an integral number of pages. If we don't do that, memcheck's |
| 135 | idea of addressible memory diverges from that of the |
| 136 | kernel's, which causes the leak detector to crash. */ |
| 137 | static |
| 138 | void mash_addr_and_len( Addr* a, UInt* len) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 139 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 140 | while (( *a % VKI_BYTES_PER_PAGE) > 0) { (*a)--; (*len)++; } |
| 141 | while (((*a + *len) % VKI_BYTES_PER_PAGE) > 0) { (*len)++; } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 142 | } |
| 143 | |
| 144 | static |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 145 | void mmap_segment ( Addr a, UInt len, UInt prot, Int fd ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 146 | { |
sewardj | 40f8ebe | 2002-10-23 21:46:13 +0000 | [diff] [blame] | 147 | Bool rr, ww, xx; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 148 | |
| 149 | /* Records segment, reads debug symbols if necessary */ |
sewardj | 1806d7f | 2002-10-22 05:05:49 +0000 | [diff] [blame] | 150 | if ((prot & PROT_EXEC) && fd != -1) |
njn | fa1016e | 2003-09-25 17:54:11 +0000 | [diff] [blame] | 151 | VG_(new_exeseg_mmap) ( a, len ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 152 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 153 | rr = prot & PROT_READ; |
| 154 | ww = prot & PROT_WRITE; |
| 155 | xx = prot & PROT_EXEC; |
| 156 | |
sewardj | 40f8ebe | 2002-10-23 21:46:13 +0000 | [diff] [blame] | 157 | VG_TRACK( new_mem_mmap, a, len, rr, ww, xx ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | static |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 161 | void munmap_segment ( Addr a, UInt len ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 162 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 163 | /* Addr orig_a = a; |
| 164 | Addr orig_len = len; */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 165 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 166 | mash_addr_and_len(&a, &len); |
| 167 | /* |
| 168 | VG_(printf)("MUNMAP: correct (%p for %d) to (%p for %d) %s\n", |
| 169 | orig_a, orig_len, a, len, (orig_a!=start || orig_len!=length) |
| 170 | ? "CHANGE" : ""); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 171 | */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 172 | |
| 173 | /* Invalidate translations as necessary (also discarding any basic |
| 174 | block-specific info retained by the skin) and unload any debug |
| 175 | symbols. */ |
| 176 | // This doesn't handle partial unmapping of exe segs correctly, if that |
| 177 | // ever happens... |
njn | fa1016e | 2003-09-25 17:54:11 +0000 | [diff] [blame] | 178 | VG_(remove_if_exeseg) ( a, len ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 179 | |
| 180 | VG_TRACK( die_mem_munmap, a, len ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 181 | } |
| 182 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 183 | static |
| 184 | void mprotect_segment ( Addr a, UInt len, Int prot ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 185 | { |
sewardj | 40f8ebe | 2002-10-23 21:46:13 +0000 | [diff] [blame] | 186 | Bool rr, ww, xx; |
| 187 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 188 | rr = prot & PROT_READ; |
| 189 | ww = prot & PROT_WRITE; |
| 190 | xx = prot & PROT_EXEC; |
| 191 | |
| 192 | // if removing exe permission, should check and remove from exe_seg list |
| 193 | // if adding, should check and add to exe_seg list |
| 194 | // easier to ignore both cases -- both v. unlikely? |
| 195 | mash_addr_and_len(&a, &len); |
sewardj | 40f8ebe | 2002-10-23 21:46:13 +0000 | [diff] [blame] | 196 | VG_TRACK( change_mem_mprotect, a, len, rr, ww, xx ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | static |
njn | 39209d4 | 2003-06-13 15:02:29 +0000 | [diff] [blame] | 200 | void mremap_segment ( Addr old_addr, UInt old_size, Addr new_addr, |
| 201 | UInt new_size ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 202 | { |
| 203 | /* If the block moves, assume new and old blocks can't overlap; seems to |
| 204 | * be valid judging from Linux kernel code in mm/mremap.c */ |
| 205 | vg_assert(old_addr == new_addr || |
| 206 | old_addr+old_size < new_addr || |
| 207 | new_addr+new_size < old_addr); |
| 208 | |
| 209 | if (new_size < old_size) { |
| 210 | // if exe_seg |
| 211 | // unmap old symbols from old_addr+new_size..old_addr+new_size |
| 212 | // update exe_seg size = new_size |
| 213 | // update exe_seg addr = new_addr... |
| 214 | VG_TRACK( copy_mem_remap, old_addr, new_addr, new_size ); |
| 215 | VG_TRACK( die_mem_munmap, old_addr+new_size, old_size-new_size ); |
| 216 | |
| 217 | } else { |
| 218 | // if exe_seg |
| 219 | // map new symbols from new_addr+old_size..new_addr+new_size |
| 220 | // update exe_seg size = new_size |
| 221 | // update exe_seg addr = new_addr... |
| 222 | VG_TRACK( copy_mem_remap, old_addr, new_addr, old_size ); |
| 223 | // what should the permissions on the new extended part be?? |
| 224 | // using 'rwx' |
| 225 | VG_TRACK( new_mem_mmap, new_addr+old_size, new_size-old_size, |
sewardj | 40f8ebe | 2002-10-23 21:46:13 +0000 | [diff] [blame] | 226 | True, True, True ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 227 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | |
| 231 | /* Is this a Linux kernel error return value? */ |
| 232 | /* From: |
| 233 | http://sources.redhat.com/cgi-bin/cvsweb.cgi/libc/sysdeps/unix/sysv/ |
| 234 | linux/i386/sysdep.h? |
| 235 | rev=1.28&content-type=text/x-cvsweb-markup&cvsroot=glibc |
| 236 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 237 | \begin{quote}: |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 238 | |
| 239 | Linux uses a negative return value to indicate syscall errors, |
| 240 | unlike most Unices, which use the condition codes' carry flag. |
| 241 | |
| 242 | Since version 2.1 the return value of a system call might be |
| 243 | negative even if the call succeeded. E.g., the `lseek' system call |
| 244 | might return a large offset. Therefore we must not anymore test |
| 245 | for < 0, but test for a real error by making sure the value in %eax |
| 246 | is a real error number. Linus said he will make sure the no syscall |
daywalker | 7e73e5f | 2003-07-04 16:18:15 +0000 | [diff] [blame] | 247 | returns a value in -1 .. -4095 as a valid result so we can safely |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 248 | test with -4095. |
| 249 | |
| 250 | END QUOTE |
| 251 | */ |
| 252 | Bool VG_(is_kerror) ( Int res ) |
| 253 | { |
| 254 | if (res >= -4095 && res <= -1) |
| 255 | return True; |
| 256 | else |
| 257 | return False; |
| 258 | } |
| 259 | |
| 260 | static |
| 261 | UInt get_shm_size ( Int shmid ) |
| 262 | { |
| 263 | struct shmid_ds buf; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 264 | long __res = VG_(do_syscall)(__NR_ipc, 24 /* IPCOP_shmctl */, shmid, IPC_STAT, 0, &buf); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 265 | if ( VG_(is_kerror) ( __res ) ) |
| 266 | return 0; |
| 267 | |
| 268 | return buf.shm_segsz; |
| 269 | } |
| 270 | |
| 271 | static |
sewardj | 8c82451 | 2002-04-14 04:16:48 +0000 | [diff] [blame] | 272 | Char *strdupcat ( const Char *s1, const Char *s2, ArenaId aid ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 273 | { |
| 274 | UInt len = VG_(strlen) ( s1 ) + VG_(strlen) ( s2 ) + 1; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 275 | Char *result = VG_(arena_malloc) ( aid, len ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 276 | VG_(strcpy) ( result, s1 ); |
| 277 | VG_(strcat) ( result, s2 ); |
| 278 | return result; |
| 279 | } |
| 280 | |
| 281 | static |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 282 | void pre_mem_read_sendmsg ( ThreadId tid, |
| 283 | Char *msg, UInt base, UInt size ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 284 | { |
| 285 | Char *outmsg = strdupcat ( "socketcall.sendmsg", msg, VG_AR_TRANSIENT ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 286 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, base, size ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 287 | |
| 288 | VG_(arena_free) ( VG_AR_TRANSIENT, outmsg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | static |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 292 | void pre_mem_write_recvmsg ( ThreadId tid, |
| 293 | Char *msg, UInt base, UInt size ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 294 | { |
| 295 | Char *outmsg = strdupcat ( "socketcall.recvmsg", msg, VG_AR_TRANSIENT ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 296 | SYSCALL_TRACK( pre_mem_write, tid, outmsg, base, size ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 297 | VG_(arena_free) ( VG_AR_TRANSIENT, outmsg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | static |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 301 | void post_mem_write_recvmsg ( ThreadId tid, |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 302 | Char *fieldName, UInt base, UInt size ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 303 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 304 | VG_TRACK( post_mem_write, base, size ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | static |
sewardj | 8c82451 | 2002-04-14 04:16:48 +0000 | [diff] [blame] | 308 | void msghdr_foreachfield ( |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 309 | ThreadId tid, |
sewardj | 8c82451 | 2002-04-14 04:16:48 +0000 | [diff] [blame] | 310 | struct msghdr *msg, |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 311 | void (*foreach_func)( ThreadId, Char *, UInt, UInt ) |
sewardj | 8c82451 | 2002-04-14 04:16:48 +0000 | [diff] [blame] | 312 | ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 313 | { |
| 314 | if ( !msg ) |
| 315 | return; |
| 316 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 317 | foreach_func ( tid, "(msg)", (Addr)msg, sizeof( struct msghdr ) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 318 | |
| 319 | if ( msg->msg_name ) |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 320 | foreach_func ( tid, |
sewardj | 8c82451 | 2002-04-14 04:16:48 +0000 | [diff] [blame] | 321 | "(msg.msg_name)", |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 322 | (Addr)msg->msg_name, msg->msg_namelen ); |
| 323 | |
| 324 | if ( msg->msg_iov ) { |
| 325 | struct iovec *iov = msg->msg_iov; |
| 326 | UInt i; |
| 327 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 328 | foreach_func ( tid, |
sewardj | 8c82451 | 2002-04-14 04:16:48 +0000 | [diff] [blame] | 329 | "(msg.msg_iov)", |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 330 | (Addr)iov, msg->msg_iovlen * sizeof( struct iovec ) ); |
| 331 | |
| 332 | for ( i = 0; i < msg->msg_iovlen; ++i, ++iov ) |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 333 | foreach_func ( tid, |
sewardj | 8c82451 | 2002-04-14 04:16:48 +0000 | [diff] [blame] | 334 | "(msg.msg_iov[i]", |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 335 | (Addr)iov->iov_base, iov->iov_len ); |
| 336 | } |
| 337 | |
| 338 | if ( msg->msg_control ) |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 339 | foreach_func ( tid, |
sewardj | 8c82451 | 2002-04-14 04:16:48 +0000 | [diff] [blame] | 340 | "(msg.msg_control)", |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 341 | (Addr)msg->msg_control, msg->msg_controllen ); |
| 342 | } |
| 343 | |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 344 | static |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 345 | void pre_mem_read_sockaddr ( ThreadId tid, |
| 346 | Char *description, |
| 347 | struct sockaddr *sa, UInt salen ) |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 348 | { |
sewardj | ff7c1ab | 2003-02-24 21:55:34 +0000 | [diff] [blame] | 349 | Char *outmsg; |
| 350 | |
| 351 | /* NULL/zero-length sockaddrs are legal */ |
| 352 | if ( sa == NULL || salen == 0 ) return; |
| 353 | |
| 354 | outmsg = VG_(arena_malloc) ( VG_AR_TRANSIENT, |
| 355 | strlen( description ) + 30 ); |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 356 | |
| 357 | VG_(sprintf) ( outmsg, description, ".sa_family" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 358 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, |
sewardj | 09cbb22 | 2002-11-17 02:46:19 +0000 | [diff] [blame] | 359 | (UInt) &sa->sa_family, sizeof (sa_family_t)); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 360 | |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 361 | switch (sa->sa_family) { |
| 362 | |
| 363 | case AF_UNIX: |
| 364 | VG_(sprintf) ( outmsg, description, ".sun_path" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 365 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, outmsg, |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 366 | (UInt) ((struct sockaddr_un *) sa)->sun_path); |
| 367 | break; |
| 368 | |
| 369 | case AF_INET: |
| 370 | VG_(sprintf) ( outmsg, description, ".sin_port" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 371 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 372 | (UInt) &((struct sockaddr_in *) sa)->sin_port, |
sewardj | 3210215 | 2002-05-04 10:28:17 +0000 | [diff] [blame] | 373 | sizeof (((struct sockaddr_in *) sa)->sin_port)); |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 374 | VG_(sprintf) ( outmsg, description, ".sin_addr" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 375 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 376 | (UInt) &((struct sockaddr_in *) sa)->sin_addr, |
| 377 | sizeof (struct in_addr)); |
| 378 | break; |
| 379 | |
| 380 | case AF_INET6: |
| 381 | VG_(sprintf) ( outmsg, description, ".sin6_port" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 382 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 383 | (UInt) &((struct sockaddr_in6 *) sa)->sin6_port, |
sewardj | 3210215 | 2002-05-04 10:28:17 +0000 | [diff] [blame] | 384 | sizeof (((struct sockaddr_in6 *) sa)->sin6_port)); |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 385 | VG_(sprintf) ( outmsg, description, ".sin6_flowinfo" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 386 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 387 | (UInt) &((struct sockaddr_in6 *) sa)->sin6_flowinfo, |
| 388 | sizeof (uint32_t)); |
| 389 | VG_(sprintf) ( outmsg, description, ".sin6_addr" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 390 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 391 | (UInt) &((struct sockaddr_in6 *) sa)->sin6_addr, |
| 392 | sizeof (struct in6_addr)); |
sewardj | 3210215 | 2002-05-04 10:28:17 +0000 | [diff] [blame] | 393 | # ifndef GLIBC_2_1 |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 394 | VG_(sprintf) ( outmsg, description, ".sin6_scope_id" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 395 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 396 | (UInt) &((struct sockaddr_in6 *) sa)->sin6_scope_id, |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 397 | sizeof (uint32_t)); |
sewardj | 3210215 | 2002-05-04 10:28:17 +0000 | [diff] [blame] | 398 | # endif |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 399 | break; |
| 400 | |
| 401 | default: |
| 402 | VG_(sprintf) ( outmsg, description, "" ); |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 403 | SYSCALL_TRACK( pre_mem_read, tid, outmsg, (UInt) sa, salen ); |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 404 | break; |
| 405 | } |
| 406 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 407 | VG_(arena_free) ( VG_AR_TRANSIENT, outmsg ); |
sewardj | c483e8f | 2002-05-03 21:01:35 +0000 | [diff] [blame] | 408 | } |
| 409 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 410 | /* Dereference a pointer to a UInt. */ |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 411 | static UInt deref_UInt ( ThreadId tid, Addr a, Char* s ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 412 | { |
| 413 | UInt* a_p = (UInt*)a; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 414 | SYSCALL_TRACK( pre_mem_read, tid, s, (Addr)a_p, sizeof(UInt) ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 415 | if (a_p == NULL) |
| 416 | return 0; |
| 417 | else |
| 418 | return *a_p; |
| 419 | } |
| 420 | |
| 421 | /* Dereference a pointer to a pointer. */ |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 422 | static Addr deref_Addr ( ThreadId tid, Addr a, Char* s ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 423 | { |
| 424 | Addr* a_p = (Addr*)a; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 425 | SYSCALL_TRACK( pre_mem_read, tid, s, (Addr)a_p, sizeof(Addr) ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 426 | return *a_p; |
| 427 | } |
| 428 | |
| 429 | static |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 430 | void buf_and_len_pre_check( ThreadId tid, Addr buf_p, Addr buflen_p, |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 431 | Char* buf_s, Char* buflen_s ) |
| 432 | { |
| 433 | if (VG_(track_events).pre_mem_write) { |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 434 | UInt buflen_in = deref_UInt( tid, buflen_p, buflen_s); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 435 | if (buflen_in > 0) { |
| 436 | VG_(track_events).pre_mem_write ( Vg_CoreSysCall, |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 437 | tid, buf_s, buf_p, buflen_in ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 438 | } |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | static |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 443 | void buf_and_len_post_check( ThreadId tid, Int res, |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 444 | Addr buf_p, Addr buflen_p, Char* s ) |
| 445 | { |
| 446 | if (!VG_(is_kerror)(res) && VG_(track_events).post_mem_write) { |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 447 | UInt buflen_out = deref_UInt( tid, buflen_p, s); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 448 | if (buflen_out > 0 && buf_p != (Addr)NULL) { |
| 449 | VG_(track_events).post_mem_write ( buf_p, buflen_out ); |
| 450 | } |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | /* --------------------------------------------------------------------- |
| 455 | Data seg end, for brk() |
| 456 | ------------------------------------------------------------------ */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 457 | |
| 458 | /* Records the current end of the data segment so we can make sense of |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 459 | calls to brk(). */ |
sewardj | a38e092 | 2002-10-01 00:50:47 +0000 | [diff] [blame] | 460 | static |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 461 | Addr curr_dataseg_end; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 462 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 463 | void VG_(init_dataseg_end_for_brk) ( void ) |
| 464 | { |
| 465 | curr_dataseg_end = (Addr)VG_(brk)(0); |
| 466 | if (curr_dataseg_end == (Addr)(-1)) |
njn | e427a66 | 2002-10-02 11:08:25 +0000 | [diff] [blame] | 467 | VG_(core_panic)("can't determine data-seg end for brk()"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 468 | if (0) |
| 469 | VG_(printf)("DS END is %p\n", (void*)curr_dataseg_end); |
| 470 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 471 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 472 | /* --------------------------------------------------------------------- |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 473 | Vet file descriptors for sanity |
| 474 | ------------------------------------------------------------------ */ |
| 475 | |
| 476 | /* Return true if we're allowed to use or create this fd */ |
| 477 | static Bool fd_allowed(Int fd, const Char *syscall, ThreadId tid) |
| 478 | { |
| 479 | if (fd < 0 || fd > VG_MAX_FD || fd == VG_(clo_logfile_fd)) { |
| 480 | VG_(message)(Vg_UserMsg, "Warning: bad use of file descriptor %d in syscall %s()", |
| 481 | fd, syscall); |
| 482 | if (fd == VG_(clo_logfile_fd)) |
| 483 | VG_(message)(Vg_UserMsg, " Use --logfile-fd=<number> to select an alternative " |
| 484 | "logfile fd."); |
| 485 | if (VG_(clo_verbosity) > 1) { |
| 486 | ExeContext *ec = VG_(get_ExeContext)(tid); |
| 487 | VG_(pp_ExeContext)(ec); |
| 488 | } |
| 489 | return False; |
| 490 | } |
| 491 | return True; |
| 492 | } |
| 493 | |
| 494 | |
| 495 | /* --------------------------------------------------------------------- |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 496 | The Main Entertainment ... |
| 497 | ------------------------------------------------------------------ */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 498 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 499 | |
| 500 | #define PRE(x) \ |
| 501 | static void before_##x(ThreadId tid, ThreadState *tst) |
| 502 | #define POST(x) \ |
| 503 | static void after_##x(ThreadId tid, ThreadState *tst) |
| 504 | |
| 505 | #define STR(x) #x |
| 506 | #define PREALIAS(new, old) \ |
| 507 | PRE(new) __attribute__((alias(STR(before_##old)))) |
| 508 | #define POSTALIAS(new, old) \ |
| 509 | POST(new) __attribute__((alias(STR(after_##old)))) |
| 510 | |
| 511 | #define SYSNO (tst->m_eax) /* in PRE(x) */ |
| 512 | #define res ((Int)tst->m_eax) /* in POST(x) */ |
| 513 | #define arg1 (tst->m_ebx) |
| 514 | #define arg2 (tst->m_ecx) |
| 515 | #define arg3 (tst->m_edx) |
| 516 | #define arg4 (tst->m_esi) |
| 517 | #define arg5 (tst->m_edi) |
| 518 | #define arg6 (tst->m_ebp) |
| 519 | |
| 520 | PRE(exit_group) |
| 521 | { |
| 522 | VG_(core_panic)("syscall exit_group() not caught by the scheduler?!"); |
| 523 | } |
| 524 | |
| 525 | PRE(exit) |
| 526 | { |
| 527 | VG_(core_panic)("syscall exit() not caught by the scheduler?!"); |
| 528 | } |
| 529 | |
| 530 | PRE(clone) |
| 531 | { |
| 532 | VG_(unimplemented) |
| 533 | ("clone(): not supported by Valgrind.\n " |
| 534 | "We do now support programs linked against\n " |
| 535 | "libpthread.so, though. Re-run with -v and ensure that\n " |
| 536 | "you are picking up Valgrind's implementation of libpthread.so."); |
| 537 | } |
| 538 | |
| 539 | PRE(ptrace) |
| 540 | { |
| 541 | /* long ptrace (enum __ptrace_request request, pid_t pid, |
| 542 | void *addr, void *data); ... sort of. */ |
| 543 | /* Sigh ... the /usr/include/sys/user.h on R H 6.2 doesn't |
| 544 | define struct user_fpxregs_struct. On the basis that it |
| 545 | is defined as follows on my R H 7.2 (glibc-2.2.4) box, |
| 546 | I kludge it. |
| 547 | |
| 548 | struct user_fpxregs_struct |
| 549 | { |
| 550 | unsigned short int cwd; |
| 551 | unsigned short int swd; |
| 552 | unsigned short int twd; |
| 553 | unsigned short int fop; |
| 554 | long int fip; |
| 555 | long int fcs; |
| 556 | long int foo; |
| 557 | long int fos; |
| 558 | long int mxcsr; |
| 559 | long int reserved; |
| 560 | long int st_space[32]; 8*16 bytes for each FP-reg = 128 bytes |
| 561 | long int xmm_space[32]; 8*16 bytes for each XMM-reg = 128 bytes |
| 562 | long int padding[56]; |
| 563 | }; |
| 564 | */ |
| 565 | const Int sizeof_struct_user_fpxregs_struct |
| 566 | = sizeof(unsigned short) * (1 + 1 + 1 + 1) |
| 567 | + sizeof(long int) * (1 + 1 + 1 + 1 + 1 + 1 + 32 + 32 + 56); |
| 568 | |
| 569 | MAYBE_PRINTF("ptrace ( %d, %d, %p, %p )\n", arg1,arg2,arg3,arg4); |
| 570 | switch (arg1) { |
| 571 | case 12: /* PTRACE_GETREGS */ |
| 572 | SYSCALL_TRACK( pre_mem_write, tid, "ptrace(getregs)", arg4, |
| 573 | sizeof (struct user_regs_struct)); |
| 574 | break; |
| 575 | case 14: /* PTRACE_GETFPREGS */ |
| 576 | SYSCALL_TRACK( pre_mem_write, tid, "ptrace(getfpregs)", arg4, |
| 577 | sizeof (struct user_fpregs_struct)); |
| 578 | break; |
| 579 | case 18: /* PTRACE_GETFPXREGS */ |
| 580 | SYSCALL_TRACK( pre_mem_write, tid, "ptrace(getfpxregs)", arg4, |
| 581 | sizeof_struct_user_fpxregs_struct); |
| 582 | break; |
| 583 | case 1: case 2: case 3: /* PTRACE_PEEK{TEXT,DATA,USER} */ |
| 584 | SYSCALL_TRACK( pre_mem_write, tid, "ptrace(peek)", arg4, |
| 585 | sizeof (long)); |
| 586 | break; |
| 587 | case 13: /* PTRACE_SETREGS */ |
| 588 | SYSCALL_TRACK( pre_mem_read, tid, "ptrace(setregs)", arg4, |
| 589 | sizeof (struct user_regs_struct)); |
| 590 | break; |
| 591 | case 15: /* PTRACE_SETFPREGS */ |
| 592 | SYSCALL_TRACK( pre_mem_read, tid, "ptrace(setfpregs)", arg4, |
| 593 | sizeof (struct user_fpregs_struct)); |
| 594 | break; |
| 595 | case 19: /* PTRACE_SETFPXREGS */ |
| 596 | SYSCALL_TRACK( pre_mem_read, tid, "ptrace(setfpxregs)", arg4, |
| 597 | sizeof_struct_user_fpxregs_struct); |
| 598 | break; |
| 599 | default: |
| 600 | break; |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | POST(ptrace) |
| 605 | { |
| 606 | const Int sizeof_struct_user_fpxregs_struct |
| 607 | = sizeof(unsigned short) * (1 + 1 + 1 + 1) |
| 608 | + sizeof(long int) * (1 + 1 + 1 + 1 + 1 + 1 + 32 + 32 + 56); |
| 609 | |
| 610 | switch (arg1) { |
| 611 | case 12: /* PTRACE_GETREGS */ |
| 612 | VG_TRACK( post_mem_write, arg4, |
| 613 | sizeof (struct user_regs_struct)); |
| 614 | break; |
| 615 | case 14: /* PTRACE_GETFPREGS */ |
| 616 | VG_TRACK( post_mem_write, arg4, |
| 617 | sizeof (struct user_fpregs_struct)); |
| 618 | break; |
| 619 | case 18: /* PTRACE_GETFPXREGS */ |
| 620 | VG_TRACK( post_mem_write, arg4, |
| 621 | sizeof_struct_user_fpxregs_struct); |
| 622 | break; |
| 623 | case 1: case 2: case 3: /* PTRACE_PEEK{TEXT,DATA,USER} */ |
| 624 | VG_TRACK( post_mem_write, arg4, sizeof (long)); |
| 625 | break; |
| 626 | default: |
| 627 | break; |
| 628 | } |
| 629 | } |
| 630 | |
| 631 | PRE(mount) |
| 632 | { |
| 633 | MAYBE_PRINTF( "mount( %p, %p, %p )\n" ,arg1,arg2,arg3); |
| 634 | SYSCALL_TRACK( pre_mem_read_asciiz, tid,"mount(specialfile)",arg1); |
| 635 | SYSCALL_TRACK( pre_mem_read_asciiz, tid,"mount(dir)",arg2); |
| 636 | SYSCALL_TRACK( pre_mem_read_asciiz, tid,"mount(filesystemtype)",arg3); |
| 637 | } |
| 638 | |
| 639 | PRE(umount) |
| 640 | { |
| 641 | /* int umount(const char *path) */ |
| 642 | MAYBE_PRINTF("umount( %p )\n", arg1); |
| 643 | SYSCALL_TRACK( pre_mem_read_asciiz, tid,"umount(path)",arg1); |
| 644 | } |
| 645 | |
| 646 | PRE(modify_ldt) |
| 647 | { |
| 648 | MAYBE_PRINTF("modify_ldt ( %d, %p, %d )\n", arg1,arg2,arg3); |
| 649 | if (arg1 == 0) { |
| 650 | /* read the LDT into ptr */ |
| 651 | SYSCALL_TRACK( pre_mem_write, tid, |
| 652 | "modify_ldt(ptr)(func=0)", arg2, arg3 ); |
| 653 | } |
| 654 | if (arg1 == 1 || arg1 == 0x11) { |
| 655 | /* write the LDT with the entry pointed at by ptr */ |
| 656 | SYSCALL_TRACK( pre_mem_read, tid, |
| 657 | "modify_ldt(ptr)(func=1 or 0x11)", arg2, |
| 658 | sizeof(struct vki_modify_ldt_ldt_s) ); |
| 659 | } |
| 660 | /* "do" the syscall ourselves; the kernel never sees it */ |
| 661 | res = VG_(sys_modify_ldt)( tid, arg1, (void*)arg2, arg3 ); |
| 662 | |
| 663 | if (arg1 == 0 && !VG_(is_kerror)(res) && res > 0) { |
| 664 | VG_TRACK( post_mem_write, arg2, res ); |
| 665 | } |
| 666 | } |
| 667 | |
| 668 | PRE(setresgid) |
| 669 | { |
| 670 | /* int setresgid(gid_t rgid, gid_t egid, gid_t sgid); */ |
| 671 | MAYBE_PRINTF("setresgid ( %d, %d, %d )\n", arg1, arg2, arg3); |
| 672 | } |
| 673 | |
| 674 | PRE(vhangup) |
| 675 | { |
| 676 | MAYBE_PRINTF("vhangup()\n"); |
| 677 | } |
| 678 | |
| 679 | PRE(iopl) |
| 680 | { |
| 681 | MAYBE_PRINTF("iopl ( %d )\n", arg1); |
| 682 | } |
| 683 | |
| 684 | PRE(setxattr) |
| 685 | { |
| 686 | MAYBE_PRINTF("setxattr ( %p, %p, %p, %d, %d )\n", |
| 687 | arg1, arg2, arg3, arg4, arg5); |
| 688 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "setxattr(path)", arg1 ); |
| 689 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "setxattr(name)", arg2 ); |
| 690 | SYSCALL_TRACK( pre_mem_read, tid, "setxattr(value)", arg3, arg4 ); |
| 691 | } |
| 692 | |
| 693 | PREALIAS(lsetxattr, setxattr); |
| 694 | |
| 695 | PRE(fsetxattr) |
| 696 | { |
| 697 | /* int fsetxattr (int filedes, const char *name, |
| 698 | const void *value, size_t size, int flags); */ |
| 699 | MAYBE_PRINTF("fsetxattr ( %d, %p, %p, %d, %d )\n", |
| 700 | arg1, arg2, arg3, arg4, arg5); |
| 701 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "fsetxattr(name)", arg2 ); |
| 702 | SYSCALL_TRACK( pre_mem_read, tid, "fsetxattr(value)", arg3, arg4 ); |
| 703 | } |
| 704 | |
| 705 | PRE(getxattr) |
| 706 | { |
| 707 | MAYBE_PRINTF("getxattr ( %p, %p, %p, %d )\n", |
| 708 | arg1,arg2,arg3, arg4); |
| 709 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "getxattr(path)", arg1 ); |
| 710 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "getxattr(name)", arg2 ); |
| 711 | SYSCALL_TRACK( pre_mem_write, tid, "getxattr(value)", arg3, arg4 ); |
| 712 | } |
| 713 | |
| 714 | POST(getxattr) |
| 715 | { |
| 716 | if (res > 0 && arg3 != (Addr)NULL) { |
| 717 | VG_TRACK( post_mem_write, arg3, res ); |
| 718 | } |
| 719 | } |
| 720 | |
| 721 | PREALIAS(lgetxattr, getxattr); |
| 722 | POSTALIAS(lgetxattr, getxattr); |
| 723 | |
| 724 | PRE(fgetxattr) |
| 725 | { |
| 726 | MAYBE_PRINTF("fgetxattr ( %d, %p, %p, %d )\n", |
| 727 | arg1, arg2, arg3, arg4); |
| 728 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "fgetxattr(name)", arg2 ); |
| 729 | SYSCALL_TRACK( pre_mem_write, tid, "fgetxattr(value)", arg3, arg4 ); |
| 730 | } |
| 731 | |
| 732 | POST(fgetxattr) |
| 733 | { |
| 734 | if (res > 0 && arg3 != (Addr)NULL) |
| 735 | VG_TRACK( post_mem_write, arg3, res ); |
| 736 | } |
| 737 | |
| 738 | PRE(listxattr) |
| 739 | { |
| 740 | MAYBE_PRINTF("listxattr ( %p, %p, %d )\n", arg1, arg2, arg3); |
| 741 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "listxattr(path)", arg1 ); |
| 742 | SYSCALL_TRACK( pre_mem_write, tid, "listxattr(list)", arg2, arg3 ); |
| 743 | } |
| 744 | |
| 745 | POST(listxattr) |
| 746 | { |
| 747 | if (res > 0 && arg2 != (Addr)NULL) |
| 748 | VG_TRACK( post_mem_write, arg2, res ); |
| 749 | } |
| 750 | |
| 751 | PREALIAS(llistxattr, listxattr); |
| 752 | POSTALIAS(llistxattr, listxattr); |
| 753 | |
| 754 | PRE(flistxattr) |
| 755 | { |
| 756 | /* ssize_t flistxattr (int filedes, char *list, size_t size); */ |
| 757 | MAYBE_PRINTF("flistxattr ( %d, %p, %d )\n", arg1, arg2, arg3); |
| 758 | SYSCALL_TRACK( pre_mem_write, tid, "listxattr(list)", arg2, arg3 ); |
| 759 | } |
| 760 | |
| 761 | POST(flistxattr) |
| 762 | { |
| 763 | if (res > 0 && arg2 != (Addr)NULL) |
| 764 | VG_TRACK( post_mem_write, arg2, res ); |
| 765 | } |
| 766 | |
| 767 | PRE(removexattr) |
| 768 | { |
| 769 | MAYBE_PRINTF("removexattr ( %p, %p )\n", arg1, arg2); |
| 770 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "listxattr(path)", arg1 ); |
| 771 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "listxattr(name)", arg2 ); |
| 772 | } |
| 773 | |
| 774 | PREALIAS(lremovexattr, removexattr); |
| 775 | |
| 776 | PRE(fremovexattr) |
| 777 | { |
| 778 | MAYBE_PRINTF("removexattr ( %d, %p )\n", arg1, arg2); |
| 779 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "listxattr(name)", arg2 ); |
| 780 | } |
| 781 | |
| 782 | PRE(quotactl) |
| 783 | { |
| 784 | MAYBE_PRINTF("quotactl (0x%x, %p, 0x%x, 0x%x )\n", |
| 785 | arg1,arg2,arg3, arg4); |
| 786 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "quotactl(special)", arg2 ); |
| 787 | } |
| 788 | |
| 789 | PRE(lookup_dcookie) |
| 790 | { |
| 791 | MAYBE_PRINTF("lookup_dcookie (0x%llx, %p, %d)\n", |
| 792 | arg1 | ((long long) arg2 << 32), arg3, arg4); |
| 793 | SYSCALL_TRACK( pre_mem_write, tid, "lookup_dcookie(buf)", arg3, arg4); |
| 794 | } |
| 795 | |
| 796 | POST(lookup_dcookie) |
| 797 | { |
| 798 | if (arg3 != (Addr)NULL) |
| 799 | VG_TRACK( post_mem_write, arg3, res); |
| 800 | } |
| 801 | |
| 802 | PRE(truncate64) |
| 803 | { |
| 804 | MAYBE_PRINTF("truncate64 ( %p, %lld )\n", |
| 805 | arg1, ((ULong)arg2) | (((ULong) arg3) << 32)); |
| 806 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "truncate64(path)", arg1 ); |
| 807 | } |
| 808 | |
| 809 | PRE(fdatasync) |
| 810 | { |
| 811 | /* int fdatasync(int fd); */ |
| 812 | MAYBE_PRINTF("fdatasync ( %d )\n", arg1); |
| 813 | } |
| 814 | |
| 815 | PRE(msync) |
| 816 | { |
| 817 | /* int msync(const void *start, size_t length, int flags); */ |
| 818 | MAYBE_PRINTF("msync ( %p, %d, %d )\n", arg1,arg2,arg3); |
| 819 | SYSCALL_TRACK( pre_mem_read, tid, "msync(start)", arg1, arg2 ); |
| 820 | } |
| 821 | |
| 822 | struct getpmsg_strbuf { |
| 823 | int maxlen; /* no. of bytes in buffer */ |
| 824 | int len; /* no. of bytes returned */ |
| 825 | caddr_t buf; /* pointer to data */ |
| 826 | }; |
| 827 | |
| 828 | PRE(getpmsg) |
| 829 | { |
| 830 | /* LiS getpmsg from http://www.gcom.com/home/linux/lis/ */ |
| 831 | /* int getpmsg(int fd, struct strbuf *ctrl, struct strbuf *data, |
| 832 | int *bandp, int *flagsp); */ |
| 833 | struct getpmsg_strbuf *ctrl; |
| 834 | struct getpmsg_strbuf *data; |
| 835 | MAYBE_PRINTF("getpmsg ( %d, %p, %p, %p, %p )\n", |
| 836 | arg1,arg2,arg3,arg4,arg5); |
| 837 | ctrl = (struct getpmsg_strbuf *)arg2; |
| 838 | data = (struct getpmsg_strbuf *)arg3; |
| 839 | if (ctrl && ctrl->maxlen > 0) |
| 840 | SYSCALL_TRACK( pre_mem_write,tid, "getpmsg(ctrl)", |
| 841 | (UInt)ctrl->buf, ctrl->maxlen); |
| 842 | if (data && data->maxlen > 0) |
| 843 | SYSCALL_TRACK( pre_mem_write,tid, "getpmsg(data)", |
| 844 | (UInt)data->buf, data->maxlen); |
| 845 | if (arg4) |
| 846 | SYSCALL_TRACK( pre_mem_write,tid, "getpmsg(bandp)", |
| 847 | (UInt)arg4, sizeof(int)); |
| 848 | if (arg5) |
| 849 | SYSCALL_TRACK( pre_mem_write,tid, "getpmsg(flagsp)", |
| 850 | (UInt)arg5, sizeof(int)); |
| 851 | } |
| 852 | |
| 853 | POST(getpmsg) |
| 854 | { |
| 855 | struct getpmsg_strbuf *ctrl; |
| 856 | struct getpmsg_strbuf *data; |
| 857 | |
| 858 | ctrl = (struct getpmsg_strbuf *)arg2; |
| 859 | data = (struct getpmsg_strbuf *)arg3; |
| 860 | if (res == 0 && ctrl && ctrl->len > 0) { |
| 861 | VG_TRACK( post_mem_write, (UInt)ctrl->buf, ctrl->len); |
| 862 | } |
| 863 | if (res == 0 && data && data->len > 0) { |
| 864 | VG_TRACK( post_mem_write, (UInt)data->buf, data->len); |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | PRE(putpmsg) |
| 869 | { |
| 870 | /* LiS putpmsg from http://www.gcom.com/home/linux/lis/ */ |
| 871 | /* int putpmsg(int fd, struct strbuf *ctrl, struct strbuf *data, |
| 872 | int band, int flags); */ |
| 873 | struct strbuf { |
| 874 | int maxlen; /* no. of bytes in buffer */ |
| 875 | int len; /* no. of bytes returned */ |
| 876 | caddr_t buf; /* pointer to data */ |
| 877 | }; |
| 878 | struct strbuf *ctrl; |
| 879 | struct strbuf *data; |
| 880 | MAYBE_PRINTF("putpmsg ( %d, %p, %p, %d, %d )\n", |
| 881 | arg1,arg2,arg3,arg4,arg5); |
| 882 | ctrl = (struct strbuf *)arg2; |
| 883 | data = (struct strbuf *)arg3; |
| 884 | if (ctrl && ctrl->len > 0) |
| 885 | SYSCALL_TRACK( pre_mem_read,tid, "putpmsg(ctrl)", |
| 886 | (UInt)ctrl->buf, ctrl->len); |
| 887 | if (data && data->len > 0) |
| 888 | SYSCALL_TRACK( pre_mem_read,tid, "putpmsg(data)", |
| 889 | (UInt)data->buf, data->len); |
| 890 | } |
| 891 | |
| 892 | PRE(getitimer) |
| 893 | { |
| 894 | /* int getitimer(int which, struct itimerval *value); */ |
| 895 | MAYBE_PRINTF("getitimer ( %d, %p )\n", arg1, arg2); |
| 896 | SYSCALL_TRACK( pre_mem_write, tid, "getitimer(timer)", arg2, |
| 897 | sizeof(struct itimerval) ); |
| 898 | } |
| 899 | |
| 900 | POST(getitimer) |
| 901 | { |
| 902 | if (arg2 != (Addr)NULL) { |
| 903 | VG_TRACK( post_mem_write,arg2, sizeof(struct itimerval)); |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | PRE(syslog) |
| 908 | { |
| 909 | /* int syslog(int type, char *bufp, int len); */ |
| 910 | MAYBE_PRINTF("syslog (%d, %p, %d)\n",arg1,arg2,arg3); |
| 911 | switch(arg1) { |
| 912 | case 2: case 3: case 4: |
| 913 | SYSCALL_TRACK( pre_mem_write, tid, "syslog(buf)", arg2, arg3); |
| 914 | break; |
| 915 | default: |
| 916 | break; |
| 917 | } |
| 918 | } |
| 919 | |
| 920 | POST(syslog) |
| 921 | { |
| 922 | switch (arg1) { |
| 923 | case 2: case 3: case 4: |
| 924 | VG_TRACK( post_mem_write, arg2, arg3 ); |
| 925 | break; |
| 926 | default: |
| 927 | break; |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | PRE(personality) |
| 932 | { |
| 933 | /* int personality(unsigned long persona); */ |
| 934 | MAYBE_PRINTF("personality ( %d )\n", arg1); |
| 935 | } |
| 936 | |
| 937 | PRE(chroot) |
| 938 | { |
| 939 | /* int chroot(const char *path); */ |
| 940 | MAYBE_PRINTF("chroot ( %p )\n", arg1); |
| 941 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "chroot(path)", arg1 ); |
| 942 | } |
| 943 | |
| 944 | PRE(madvise) |
| 945 | { |
| 946 | /* int madvise(void *start, size_t length, int advice ); */ |
| 947 | MAYBE_PRINTF("madvise ( %p, %d, %d )\n", arg1,arg2,arg3); |
| 948 | } |
| 949 | |
| 950 | PRE(mremap) |
| 951 | { |
| 952 | /* void* mremap(void * old_address, size_t old_size, |
| 953 | size_t new_size, unsigned long flags); */ |
| 954 | MAYBE_PRINTF("mremap ( %p, %d, %d, 0x%x )\n", |
| 955 | arg1, arg2, arg3, arg4); |
| 956 | SYSCALL_TRACK( pre_mem_write, tid, "mremap(old_address)", arg1, arg2 ); |
| 957 | } |
| 958 | |
| 959 | POST(mremap) |
| 960 | { |
| 961 | mremap_segment( arg1, arg2, (Addr)res, arg3 ); |
| 962 | } |
| 963 | |
| 964 | PRE(nice) |
| 965 | { |
| 966 | /* int nice(int inc); */ |
| 967 | MAYBE_PRINTF("nice ( %d )\n", arg1); |
| 968 | } |
| 969 | |
| 970 | PRE(setresgid32) |
| 971 | { |
| 972 | /* int setresgid(gid_t rgid, gid_t egid, gid_t sgid); */ |
| 973 | MAYBE_PRINTF("setresgid32 ( %d, %d, %d )\n", arg1, arg2, arg3); |
| 974 | } |
| 975 | |
| 976 | PRE(setfsuid32) |
| 977 | { |
| 978 | /* int setfsuid(uid_t fsuid); */ |
| 979 | MAYBE_PRINTF("setfsuid ( %d )\n", arg1); |
| 980 | } |
| 981 | |
| 982 | PRE(_sysctl) |
| 983 | { |
| 984 | /* int _sysctl(struct __sysctl_args *args); */ |
| 985 | MAYBE_PRINTF("_sysctl ( %p )\n", arg1 ); |
| 986 | SYSCALL_TRACK( pre_mem_write, tid, "_sysctl(args)", arg1, |
| 987 | sizeof(struct __sysctl_args) ); |
| 988 | } |
| 989 | |
| 990 | POST(_sysctl) |
| 991 | { |
| 992 | VG_TRACK( post_mem_write, arg1, sizeof(struct __sysctl_args) ); |
| 993 | |
| 994 | } |
| 995 | |
| 996 | PRE(sched_getscheduler) |
| 997 | { |
| 998 | /* int sched_getscheduler(pid_t pid); */ |
| 999 | MAYBE_PRINTF("sched_getscheduler ( %d )\n", arg1); |
| 1000 | } |
| 1001 | |
| 1002 | PRE(sched_setscheduler) |
| 1003 | { |
| 1004 | /* int sched_setscheduler(pid_t pid, int policy, |
| 1005 | const struct sched_param *p); */ |
| 1006 | MAYBE_PRINTF("sched_setscheduler ( %d, %d, %p )\n",arg1,arg2,arg3); |
| 1007 | if (arg3 != (UInt)NULL) |
| 1008 | SYSCALL_TRACK( pre_mem_read, tid, |
| 1009 | "sched_setscheduler(struct sched_param *p)", |
| 1010 | arg3, sizeof(struct sched_param)); |
| 1011 | } |
| 1012 | |
| 1013 | PRE(mlock) |
| 1014 | { |
| 1015 | /* int mlock(const void * addr, size_t len) */ |
| 1016 | MAYBE_PRINTF("mlock ( %p, %d )\n", arg1, arg2); |
| 1017 | } |
| 1018 | |
| 1019 | PRE(munlock) |
| 1020 | { |
| 1021 | /* int munlock(const void * addr, size_t len) */ |
| 1022 | MAYBE_PRINTF("munlock ( %p, %d )\n", arg1, arg2); |
| 1023 | } |
| 1024 | |
| 1025 | PRE(mlockall) |
| 1026 | { |
| 1027 | /* int mlockall(int flags); */ |
| 1028 | MAYBE_PRINTF("mlockall ( %x )\n", arg1); |
| 1029 | } |
| 1030 | |
| 1031 | PRE(munlockall) |
| 1032 | { |
| 1033 | /* int munlock(const void * addr, size_t len) */ |
| 1034 | MAYBE_PRINTF("munlock ( %p, %d )\n", arg1, arg2); |
| 1035 | } |
| 1036 | |
| 1037 | PRE(sched_get_priority_max) |
| 1038 | { |
| 1039 | /* int sched_get_priority_max(int policy); */ |
| 1040 | MAYBE_PRINTF("sched_get_priority_max ( %d )\n", arg1); |
| 1041 | } |
| 1042 | |
| 1043 | PRE(sched_get_priority_min) |
| 1044 | { |
| 1045 | /* int sched_get_priority_min(int policy); */ |
| 1046 | MAYBE_PRINTF("sched_get_priority_min ( %d )\n", arg1); |
| 1047 | } |
| 1048 | |
| 1049 | PRE(setpriority) |
| 1050 | { |
| 1051 | /* int setpriority(int which, int who, int prio); */ |
| 1052 | MAYBE_PRINTF("setpriority ( %d, %d, %d )\n", arg1, arg2, arg3); |
| 1053 | } |
| 1054 | |
| 1055 | PRE(getpriority) |
| 1056 | { |
| 1057 | /* int getpriority(int which, int who); */ |
| 1058 | MAYBE_PRINTF("getpriority ( %d, %d )\n", arg1, arg2); |
| 1059 | } |
| 1060 | |
| 1061 | PRE(setfsgid) |
| 1062 | { |
| 1063 | /* int setfsgid(gid_t gid); */ |
| 1064 | MAYBE_PRINTF("setfsgid ( %d )\n", arg1); |
| 1065 | } |
| 1066 | |
| 1067 | PRE(setregid) |
| 1068 | { |
| 1069 | /* int setregid(gid_t rgid, gid_t egid); */ |
| 1070 | MAYBE_PRINTF("setregid ( %d, %d )\n", arg1, arg2); |
| 1071 | } |
| 1072 | |
| 1073 | PRE(setresuid) |
| 1074 | { |
| 1075 | /* int setresuid(uid_t ruid, uid_t euid, uid_t suid); */ |
| 1076 | MAYBE_PRINTF("setresuid ( %d, %d, %d )\n", arg1, arg2, arg3); |
| 1077 | } |
| 1078 | |
| 1079 | PRE(setfsuid) |
| 1080 | { |
| 1081 | /* int setfsuid(uid_t uid); */ |
| 1082 | MAYBE_PRINTF("setfsuid ( %d )\n", arg1); |
| 1083 | } |
| 1084 | |
| 1085 | PRE(sendfile) |
| 1086 | { |
| 1087 | /* ssize_t sendfile(int out_fd, int in_fd, off_t *offset, |
| 1088 | size_t count) */ |
| 1089 | MAYBE_PRINTF("sendfile ( %d, %d, %p, %d )\n",arg1,arg2,arg3,arg4); |
| 1090 | if (arg3 != (UInt)NULL) |
| 1091 | SYSCALL_TRACK( pre_mem_write, tid, "sendfile(offset)", |
| 1092 | arg3, sizeof(off_t) ); |
| 1093 | } |
| 1094 | |
| 1095 | POST(sendfile) |
| 1096 | { |
| 1097 | VG_TRACK( post_mem_write, arg3, sizeof( off_t ) ); |
| 1098 | } |
| 1099 | |
| 1100 | PRE(sendfile64) |
| 1101 | { |
| 1102 | /* ssize_t sendfile64(int out_df, int in_fd, loff_t *offset, |
| 1103 | size_t count); */ |
| 1104 | MAYBE_PRINTF("sendfile64 ( %d, %d, %p, %d )\n",arg1,arg2,arg3,arg4); |
| 1105 | if (arg3 != (UInt)NULL) |
| 1106 | SYSCALL_TRACK( pre_mem_write, tid, "sendfile64(offset)", |
| 1107 | arg3, sizeof(loff_t) ); |
| 1108 | } |
| 1109 | |
| 1110 | POST(sendfile64) |
| 1111 | { |
| 1112 | if (arg3 != (UInt)NULL ) { |
| 1113 | VG_TRACK( post_mem_write, arg3, sizeof(loff_t) ); |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | PRE(pwrite64) |
| 1118 | { |
| 1119 | /* ssize_t pwrite (int fd, const void *buf, size_t nbytes, |
| 1120 | off_t offset); */ |
| 1121 | MAYBE_PRINTF("pwrite64 ( %d, %p, %d, %d )\n", arg1, arg2, arg3, arg4); |
| 1122 | SYSCALL_TRACK( pre_mem_read, tid, "pwrite(buf)", arg2, arg3 ); |
| 1123 | } |
| 1124 | |
| 1125 | PRE(sync) |
| 1126 | { |
| 1127 | /* int sync(); */ |
| 1128 | MAYBE_PRINTF("sync ( )\n"); |
| 1129 | } |
| 1130 | |
| 1131 | PRE(fstatfs) |
| 1132 | { |
| 1133 | /* int fstatfs(int fd, struct statfs *buf); */ |
| 1134 | MAYBE_PRINTF("fstatfs ( %d, %p )\n",arg1,arg2); |
| 1135 | SYSCALL_TRACK( pre_mem_write, tid, "stat(buf)", |
| 1136 | arg2, sizeof(struct statfs) ); |
| 1137 | } |
| 1138 | |
| 1139 | POST(fstatfs) |
| 1140 | { |
| 1141 | VG_TRACK( post_mem_write, arg2, sizeof(struct statfs) ); |
| 1142 | } |
| 1143 | |
| 1144 | PRE(getsid) |
| 1145 | { |
| 1146 | /* pid_t getsid(pid_t pid); */ |
| 1147 | MAYBE_PRINTF("getsid ( %d )\n", arg1); |
| 1148 | } |
| 1149 | |
| 1150 | PRE(pread64) |
| 1151 | { |
| 1152 | /* ssize_t pread64(int fd, void *buf, size_t count, off_t offset); */ |
| 1153 | MAYBE_PRINTF("pread ( %d, %p, %d, %d ) ...\n",arg1,arg2,arg3,arg4); |
| 1154 | SYSCALL_TRACK( pre_mem_write, tid, "pread(buf)", arg2, arg3 ); |
| 1155 | } |
| 1156 | |
| 1157 | POST(pread64) |
| 1158 | { |
| 1159 | MAYBE_PRINTF("SYSCALL[%d] pread ( %d, %p, %d, %d ) --> %d\n", |
| 1160 | VG_(getpid)(), |
| 1161 | arg1, arg2, arg3, arg4, res); |
| 1162 | if (res > 0) { |
| 1163 | VG_TRACK( post_mem_write, arg2, res ); |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | PRE(mknod) |
| 1168 | { |
| 1169 | /* int mknod(const char *pathname, mode_t mode, dev_t dev); */ |
| 1170 | MAYBE_PRINTF("mknod ( %p, 0x%x, 0x%x )\n", arg1, arg2, arg3 ); |
| 1171 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "mknod(pathname)", arg1 ); |
| 1172 | } |
| 1173 | |
| 1174 | PRE(flock) |
| 1175 | { |
| 1176 | /* int flock(int fd, int operation); */ |
| 1177 | MAYBE_PRINTF("flock ( %d, %d )\n", arg1, arg2 ); |
| 1178 | } |
| 1179 | |
| 1180 | PRE(init_module) |
| 1181 | { |
| 1182 | /* int init_module(const char *name, struct module *image); */ |
| 1183 | MAYBE_PRINTF("init_module ( %p, %p )\n", arg1, arg2 ); |
| 1184 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "init_module(name)", arg1 ); |
| 1185 | SYSCALL_TRACK( pre_mem_read, tid, "init_module(image)", arg2, |
| 1186 | VKI_SIZEOF_STRUCT_MODULE ); |
| 1187 | } |
| 1188 | |
| 1189 | PRE(ioperm) |
| 1190 | { |
| 1191 | /* int ioperm(unsigned long from, unsigned long num, int turn_on); */ |
| 1192 | MAYBE_PRINTF("ioperm ( %d, %d, %d )\n", arg1, arg2, arg3 ); |
| 1193 | } |
| 1194 | |
| 1195 | PRE(capget) |
| 1196 | { |
| 1197 | /* int capget(cap_user_header_t header, cap_user_data_t data); */ |
| 1198 | MAYBE_PRINTF("capget ( %p, %p )\n", arg1, arg2 ); |
| 1199 | SYSCALL_TRACK( pre_mem_read, tid, "capget(header)", arg1, |
| 1200 | sizeof(vki_cap_user_header_t) ); |
| 1201 | SYSCALL_TRACK( pre_mem_write, tid, "capget(data)", arg2, |
| 1202 | sizeof( vki_cap_user_data_t) ); |
| 1203 | } |
| 1204 | |
| 1205 | POST(capget) |
| 1206 | { |
| 1207 | if (arg2 != (Addr)NULL) |
| 1208 | VG_TRACK( post_mem_write, arg2, sizeof( vki_cap_user_data_t) ); |
| 1209 | } |
| 1210 | |
| 1211 | PRE(capset) |
| 1212 | { |
| 1213 | SYSCALL_TRACK( pre_mem_read, tid, "capset(header)", |
| 1214 | arg1, sizeof(vki_cap_user_header_t) ); |
| 1215 | SYSCALL_TRACK( pre_mem_read, tid, "capset(data)", |
| 1216 | arg2, sizeof( vki_cap_user_data_t) ); |
| 1217 | } |
| 1218 | |
| 1219 | PRE(execve) |
| 1220 | { |
| 1221 | /* int execve (const char *filename, |
| 1222 | char *const argv [], |
| 1223 | char *const envp[]); */ |
| 1224 | MAYBE_PRINTF("execve ( %p(%s), %p, %p ) --- NOT CHECKED\n", |
| 1225 | arg1, arg1, arg2, arg3); |
fitzhardinge | e1c06d8 | 2003-10-30 07:21:44 +0000 | [diff] [blame] | 1226 | |
| 1227 | /* Erk. If the exec fails, then the following will have made a |
| 1228 | mess of things which makes it hard for us to continue. The |
| 1229 | right thing to do is piece everything together again in |
| 1230 | POST(execve), but that's hard work. Instead, we make an effort |
| 1231 | to check that the execve will work before actually calling |
| 1232 | exec. */ |
| 1233 | { |
| 1234 | struct vki_stat st; |
| 1235 | Int ret = VG_(stat)((Char *)arg1, &st); |
| 1236 | |
| 1237 | if (ret < 0) { |
| 1238 | res = ret; |
| 1239 | return; |
| 1240 | } |
| 1241 | /* just look for any X bit set |
| 1242 | XXX do proper permissions check? |
| 1243 | */ |
| 1244 | if ((st.st_mode & 0111) == 0) { |
| 1245 | res = -VKI_EACCES; |
| 1246 | return; |
| 1247 | } |
| 1248 | } |
| 1249 | |
| 1250 | /* Resistance is futile. Nuke all other threads. POSIX mandates |
| 1251 | this. (Really, nuke them all, since the new process will make |
| 1252 | its own new thread.) */ |
| 1253 | VG_(nuke_all_threads_except)( VG_INVALID_THREADID ); |
| 1254 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1255 | /* Make any binding for LD_PRELOAD disappear, so that child |
| 1256 | processes don't get traced into. */ |
| 1257 | if (!VG_(clo_trace_children)) { |
| 1258 | Int i; |
| 1259 | Char** envp = (Char**)arg3; |
| 1260 | Char* ld_preload_str = NULL; |
| 1261 | Char* ld_library_path_str = NULL; |
| 1262 | for (i = 0; envp[i] != NULL; i++) { |
| 1263 | if (VG_(strncmp)(envp[i], "LD_PRELOAD=", 11) == 0) |
| 1264 | ld_preload_str = &envp[i][11]; |
| 1265 | if (VG_(strncmp)(envp[i], "LD_LIBRARY_PATH=", 16) == 0) |
| 1266 | ld_library_path_str = &envp[i][16]; |
| 1267 | } |
| 1268 | VG_(mash_LD_PRELOAD_and_LD_LIBRARY_PATH)( |
| 1269 | ld_preload_str, ld_library_path_str ); |
| 1270 | } |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1271 | |
fitzhardinge | e1c06d8 | 2003-10-30 07:21:44 +0000 | [diff] [blame] | 1272 | res = VG_(do_syscall)(__NR_execve, arg1, arg2, arg3); |
| 1273 | |
| 1274 | /* If we got here, then the execve failed. We've already made too much of a mess |
| 1275 | of ourselves to continue, so we have to abort. */ |
| 1276 | VG_(message)(Vg_UserMsg, "execve(%p \"%s\", %p, %p) failed, errno %d", |
| 1277 | arg1, arg1, arg2, arg3, -res); |
| 1278 | VG_(core_panic)("EXEC FAILED: I can't recover from execve() failing, so I'm dying.\n" |
| 1279 | "Add more stringent tests in PRE(execve), or work out how to recover."); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 1280 | } |
| 1281 | |
| 1282 | PRE(access) |
| 1283 | { |
| 1284 | /* int access(const char *pathname, int mode); */ |
| 1285 | MAYBE_PRINTF("access ( %p, %d )\n", arg1,arg2); |
| 1286 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "access(pathname)", arg1 ); |
| 1287 | } |
| 1288 | |
| 1289 | PRE(alarm) |
| 1290 | { |
| 1291 | /* unsigned int alarm(unsigned int seconds); */ |
| 1292 | MAYBE_PRINTF("alarm ( %d )\n", arg1); |
| 1293 | } |
| 1294 | |
| 1295 | PRE(brk) |
| 1296 | { |
| 1297 | /* libc says: int brk(void *end_data_segment); |
| 1298 | kernel says: void* brk(void* end_data_segment); (more or less) |
| 1299 | |
| 1300 | libc returns 0 on success, and -1 (and sets errno) on failure. |
| 1301 | Nb: if you ask to shrink the dataseg end below what it |
| 1302 | currently is, that always succeeds, even if the dataseg end |
| 1303 | doesn't actually change (eg. brk(0)). Unless it seg faults. |
| 1304 | |
| 1305 | Kernel returns the new dataseg end. If the brk() failed, this |
| 1306 | will be unchanged from the old one. That's why calling (kernel) |
| 1307 | brk(0) gives the current dataseg end (libc brk() just returns |
| 1308 | zero in that case). |
| 1309 | |
| 1310 | Both will seg fault if you shrink it back into a text segment. |
| 1311 | */ |
| 1312 | MAYBE_PRINTF("brk ( %p ) --> ",arg1); |
| 1313 | } |
| 1314 | |
| 1315 | POST(brk) |
| 1316 | { |
| 1317 | MAYBE_PRINTF("0x%x\n", res); |
| 1318 | |
| 1319 | if (res == arg1) { |
| 1320 | /* brk() succeeded */ |
| 1321 | if (res < curr_dataseg_end) { |
| 1322 | /* successfully shrunk the data segment. */ |
| 1323 | VG_TRACK( die_mem_brk, (Addr)arg1, |
| 1324 | curr_dataseg_end-arg1 ); |
| 1325 | } else |
| 1326 | if (res > curr_dataseg_end && res != 0) { |
| 1327 | /* successfully grew the data segment */ |
| 1328 | VG_TRACK( new_mem_brk, curr_dataseg_end, |
| 1329 | arg1-curr_dataseg_end ); |
| 1330 | } |
| 1331 | curr_dataseg_end = res; |
| 1332 | } else { |
| 1333 | /* brk() failed */ |
| 1334 | vg_assert(curr_dataseg_end == res); |
| 1335 | } |
| 1336 | } |
| 1337 | |
| 1338 | PRE(chdir) |
| 1339 | { |
| 1340 | /* int chdir(const char *path); */ |
| 1341 | MAYBE_PRINTF("chdir ( %p )\n", arg1); |
| 1342 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "chdir(path)", arg1 ); |
| 1343 | } |
| 1344 | |
| 1345 | PRE(chmod) |
| 1346 | { |
| 1347 | /* int chmod(const char *path, mode_t mode); */ |
| 1348 | MAYBE_PRINTF("chmod ( %p, %d )\n", arg1,arg2); |
| 1349 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "chmod(path)", arg1 ); |
| 1350 | } |
| 1351 | |
| 1352 | PRE(chown) |
| 1353 | { |
| 1354 | /* int chown(const char *path, uid_t owner, gid_t group); */ |
| 1355 | MAYBE_PRINTF("chown ( %p, 0x%x, 0x%x )\n", arg1,arg2,arg3); |
| 1356 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "chown(path)", arg1 ); |
| 1357 | } |
| 1358 | |
| 1359 | PREALIAS(chown32, chown); |
| 1360 | PREALIAS(lchown32, chown); |
| 1361 | |
| 1362 | PRE(close) |
| 1363 | { |
| 1364 | /* int close(int fd); */ |
| 1365 | MAYBE_PRINTF("close ( %d )\n",arg1); |
| 1366 | /* Detect and negate attempts by the client to close Valgrind's |
| 1367 | logfile fd ... */ |
| 1368 | if (!fd_allowed(arg1, "close", tid)) |
| 1369 | res = -VKI_EBADF; |
| 1370 | } |
| 1371 | |
| 1372 | |
| 1373 | PRE(dup) |
| 1374 | { |
| 1375 | /* int dup(int oldfd); */ |
| 1376 | MAYBE_PRINTF("dup ( %d ) --> ", arg1); |
| 1377 | } |
| 1378 | |
| 1379 | POST(dup) |
| 1380 | { |
| 1381 | MAYBE_PRINTF("%d\n", res); |
| 1382 | if (!fd_allowed(res, "dup", tid)) { |
| 1383 | VG_(close)(res); |
| 1384 | res = -VKI_EMFILE; |
| 1385 | } |
| 1386 | } |
| 1387 | |
| 1388 | PRE(dup2) |
| 1389 | { |
| 1390 | /* int dup2(int oldfd, int newfd); */ |
| 1391 | MAYBE_PRINTF("dup2 ( %d, %d ) ...\n", arg1,arg2); |
| 1392 | if (!fd_allowed(arg2, "dup2", tid)) |
| 1393 | res = -VKI_EBADF; |
| 1394 | } |
| 1395 | |
| 1396 | POST(dup2) |
| 1397 | { |
| 1398 | MAYBE_PRINTF("SYSCALL[%d] dup2 ( %d, %d ) = %d\n", |
| 1399 | VG_(getpid)(), |
| 1400 | arg1, arg2, res); |
| 1401 | } |
| 1402 | |
| 1403 | PRE(fcntl) |
| 1404 | { |
| 1405 | /* int fcntl(int fd, int cmd, int arg); */ |
| 1406 | MAYBE_PRINTF("fcntl ( %d, %d, %d )\n",arg1,arg2,arg3); |
| 1407 | } |
| 1408 | |
| 1409 | PRE(fchdir) |
| 1410 | { |
| 1411 | /* int fchdir(int fd); */ |
| 1412 | MAYBE_PRINTF("fchdir ( %d )\n", arg1); |
| 1413 | } |
| 1414 | |
| 1415 | PRE(fchown) |
| 1416 | { |
| 1417 | /* int fchown(int filedes, uid_t owner, gid_t group); */ |
| 1418 | MAYBE_PRINTF("fchown ( %d, %d, %d )\n", arg1,arg2,arg3); |
| 1419 | } |
| 1420 | |
| 1421 | PREALIAS(fchown32, fchown); |
| 1422 | |
| 1423 | PRE(fchmod) |
| 1424 | { |
| 1425 | /* int fchmod(int fildes, mode_t mode); */ |
| 1426 | MAYBE_PRINTF("fchmod ( %d, %d )\n", arg1,arg2); |
| 1427 | } |
| 1428 | |
| 1429 | PRE(fcntl64) |
| 1430 | { |
| 1431 | /* I don't know what the prototype for this is supposed to be. */ |
| 1432 | /* ??? int fcntl(int fd, int cmd); */ |
| 1433 | MAYBE_PRINTF("fcntl64 (?!) ( %d, %d )\n", arg1,arg2); |
| 1434 | } |
| 1435 | |
| 1436 | PRE(fstat) |
| 1437 | { |
| 1438 | /* int fstat(int filedes, struct stat *buf); */ |
| 1439 | MAYBE_PRINTF("fstat ( %d, %p )\n",arg1,arg2); |
| 1440 | SYSCALL_TRACK( pre_mem_write, tid, "fstat", arg2, sizeof(struct stat) ); |
| 1441 | } |
| 1442 | |
| 1443 | POST(fstat) |
| 1444 | { |
| 1445 | VG_TRACK( post_mem_write, arg2, sizeof(struct stat) ); |
| 1446 | } |
| 1447 | |
| 1448 | static vki_ksigset_t fork_saved_mask; |
| 1449 | |
| 1450 | PRE(fork) |
| 1451 | { |
| 1452 | vki_ksigset_t mask; |
| 1453 | |
| 1454 | vg_assert(VG_(gettid)() == VG_(main_pid)); |
| 1455 | |
| 1456 | /* Block all signals during fork, so that we can fix things up in |
| 1457 | the child without being interrupted. */ |
| 1458 | VG_(ksigfillset)(&mask); |
| 1459 | VG_(ksigprocmask)(VKI_SIG_SETMASK, &mask, &fork_saved_mask); |
| 1460 | |
| 1461 | /* pid_t fork(void); */ |
| 1462 | MAYBE_PRINTF("fork ()\n"); |
| 1463 | |
| 1464 | do_atfork_pre(tid); |
| 1465 | } |
| 1466 | |
| 1467 | POST(fork) |
| 1468 | { |
| 1469 | if (res == 0) { |
| 1470 | do_atfork_child(tid); |
| 1471 | |
| 1472 | /* I am the child. Nuke all other threads which I might |
| 1473 | have inherited from my parent. POSIX mandates this. */ |
| 1474 | VG_(nuke_all_threads_except)( tid ); |
| 1475 | |
| 1476 | /* XXX TODO: tid 1 is special, and is presumed to be present. |
| 1477 | We should move this TID to 1 in the child. */ |
| 1478 | |
| 1479 | /* restore signal mask */ |
| 1480 | VG_(ksigprocmask)(VKI_SIG_SETMASK, &fork_saved_mask, NULL); |
| 1481 | } else { |
| 1482 | MAYBE_PRINTF(" fork: process %d created child %d\n", VG_(main_pid), res); |
| 1483 | |
| 1484 | do_atfork_parent(tid); |
| 1485 | |
| 1486 | /* restore signal mask */ |
| 1487 | VG_(ksigprocmask)(VKI_SIG_SETMASK, &fork_saved_mask, NULL); |
| 1488 | } |
| 1489 | } |
| 1490 | |
| 1491 | PRE(fsync) |
| 1492 | { |
| 1493 | /* int fsync(int fd); */ |
| 1494 | MAYBE_PRINTF("fsync ( %d )\n", arg1); |
| 1495 | } |
| 1496 | |
| 1497 | PRE(ftruncate) |
| 1498 | { |
| 1499 | /* int ftruncate(int fd, size_t length); */ |
| 1500 | MAYBE_PRINTF("ftruncate ( %d, %d )\n", arg1,arg2); |
| 1501 | } |
| 1502 | |
| 1503 | PRE(ftruncate64) |
| 1504 | { |
| 1505 | /* int ftruncate64(int fd, off64_t length); */ |
| 1506 | MAYBE_PRINTF("ftruncate64 ( %d, %lld )\n", |
| 1507 | arg1,arg2|((long long) arg3 << 32)); |
| 1508 | } |
| 1509 | |
| 1510 | PRE(getdents) |
| 1511 | { |
| 1512 | /* int getdents(unsigned int fd, struct dirent *dirp, |
| 1513 | unsigned int count); */ |
| 1514 | MAYBE_PRINTF("getdents ( %d, %p, %d )\n",arg1,arg2,arg3); |
| 1515 | SYSCALL_TRACK( pre_mem_write, tid, "getdents(dirp)", arg2, arg3 ); |
| 1516 | } |
| 1517 | |
| 1518 | POST(getdents) |
| 1519 | { |
| 1520 | if (res > 0) |
| 1521 | VG_TRACK( post_mem_write, arg2, res ); |
| 1522 | } |
| 1523 | |
| 1524 | PRE(getdents64) |
| 1525 | { |
| 1526 | /* int getdents(unsigned int fd, struct dirent64 *dirp, |
| 1527 | unsigned int count); */ |
| 1528 | MAYBE_PRINTF("getdents64 ( %d, %p, %d )\n",arg1,arg2,arg3); |
| 1529 | SYSCALL_TRACK( pre_mem_write, tid, "getdents64(dirp)", arg2, arg3 ); |
| 1530 | } |
| 1531 | |
| 1532 | POST(getdents64) |
| 1533 | { |
| 1534 | if (res > 0) |
| 1535 | VG_TRACK( post_mem_write, arg2, res ); |
| 1536 | } |
| 1537 | |
| 1538 | PRE(getgroups) |
| 1539 | { |
| 1540 | /* int getgroups(int size, gid_t list[]); */ |
| 1541 | MAYBE_PRINTF("getgroups ( %d, %p )\n", arg1, arg2); |
| 1542 | if (arg1 > 0) |
| 1543 | SYSCALL_TRACK( pre_mem_write, tid, "getgroups(list)", arg2, |
| 1544 | arg1 * sizeof(gid_t) ); |
| 1545 | } |
| 1546 | |
| 1547 | POST(getgroups) |
| 1548 | { |
| 1549 | if (arg1 > 0 && res > 0) |
| 1550 | VG_TRACK( post_mem_write, arg2, res * sizeof(gid_t) ); |
| 1551 | } |
| 1552 | |
| 1553 | PREALIAS(getgroups32, getgroups); |
| 1554 | POSTALIAS(getgroups32, getgroups); |
| 1555 | |
| 1556 | PRE(getcwd) |
| 1557 | { |
| 1558 | /* char *getcwd(char *buf, size_t size); (but see comment below) */ |
| 1559 | MAYBE_PRINTF("getcwd ( %p, %d )\n",arg1,arg2); |
| 1560 | SYSCALL_TRACK( pre_mem_write, tid, "getcwd(buf)", arg1, arg2 ); |
| 1561 | } |
| 1562 | |
| 1563 | POST(getcwd) |
| 1564 | { |
| 1565 | if (res != (Addr)NULL) |
| 1566 | VG_TRACK( post_mem_write, arg1, res ); |
| 1567 | } |
| 1568 | |
| 1569 | PRE(geteuid) |
| 1570 | { |
| 1571 | /* uid_t geteuid(void); */ |
| 1572 | MAYBE_PRINTF("geteuid ( )\n"); |
| 1573 | } |
| 1574 | |
| 1575 | PRE(geteuid32) |
| 1576 | { |
| 1577 | /* ?? uid_t geteuid32(void); */ |
| 1578 | MAYBE_PRINTF("geteuid32(?) ( )\n"); |
| 1579 | } |
| 1580 | |
| 1581 | PRE(getegid) |
| 1582 | { |
| 1583 | /* gid_t getegid(void); */ |
| 1584 | MAYBE_PRINTF("getegid ()\n"); |
| 1585 | } |
| 1586 | |
| 1587 | PRE(getegid32) |
| 1588 | { |
| 1589 | /* gid_t getegid32(void); */ |
| 1590 | MAYBE_PRINTF("getegid32 ()\n"); |
| 1591 | } |
| 1592 | |
| 1593 | PRE(getgid) |
| 1594 | { |
| 1595 | /* gid_t getgid(void); */ |
| 1596 | MAYBE_PRINTF("getgid ()\n"); |
| 1597 | } |
| 1598 | |
| 1599 | PRE(getgid32) |
| 1600 | { |
| 1601 | /* gid_t getgid32(void); */ |
| 1602 | MAYBE_PRINTF("getgid32 ()\n"); |
| 1603 | } |
| 1604 | |
| 1605 | PRE(getpid) |
| 1606 | { |
| 1607 | /* pid_t getpid(void); */ |
| 1608 | MAYBE_PRINTF("getpid ()\n"); |
| 1609 | } |
| 1610 | |
| 1611 | PRE(getpgid) |
| 1612 | { |
| 1613 | /* pid_t getpgid(pid_t pid); */ |
| 1614 | MAYBE_PRINTF("getpgid ( %d )\n", arg1); |
| 1615 | } |
| 1616 | |
| 1617 | PRE(getpgrp) |
| 1618 | { |
| 1619 | /* pid_t getpgrp(void); */ |
| 1620 | MAYBE_PRINTF("getpgrp ()\n"); |
| 1621 | } |
| 1622 | |
| 1623 | PRE(getppid) |
| 1624 | { |
| 1625 | /* pid_t getppid(void); */ |
| 1626 | MAYBE_PRINTF("getppid ()\n"); |
| 1627 | } |
| 1628 | |
| 1629 | PRE(getresgid) |
| 1630 | { |
| 1631 | /* int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid); */ |
| 1632 | MAYBE_PRINTF("getresgid ( %p, %p, %p )\n", arg1,arg2,arg3); |
| 1633 | SYSCALL_TRACK( pre_mem_write, tid, "getresgid(rgid)", |
| 1634 | arg1, sizeof(gid_t) ); |
| 1635 | SYSCALL_TRACK( pre_mem_write, tid, "getresgid(egid)", |
| 1636 | arg2, sizeof(gid_t) ); |
| 1637 | SYSCALL_TRACK( pre_mem_write, tid, "getresgid(sgid)", |
| 1638 | arg3, sizeof(gid_t) ); |
| 1639 | } |
| 1640 | |
| 1641 | POST(getresgid) |
| 1642 | { |
| 1643 | if (res == 0) { |
| 1644 | VG_TRACK( post_mem_write, arg1, sizeof(gid_t) ); |
| 1645 | VG_TRACK( post_mem_write, arg2, sizeof(gid_t) ); |
| 1646 | VG_TRACK( post_mem_write, arg3, sizeof(gid_t) ); |
| 1647 | } |
| 1648 | } |
| 1649 | |
| 1650 | PRE(getresgid32) |
| 1651 | { |
| 1652 | /* int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid); */ |
| 1653 | MAYBE_PRINTF("getresgid32 ( %p, %p, %p )\n", arg1,arg2,arg3); |
| 1654 | SYSCALL_TRACK( pre_mem_write, tid, "getresgid32(rgid)", |
| 1655 | arg1, sizeof(gid_t) ); |
| 1656 | SYSCALL_TRACK( pre_mem_write, tid, "getresgid32(egid)", |
| 1657 | arg2, sizeof(gid_t) ); |
| 1658 | SYSCALL_TRACK( pre_mem_write, tid, "getresgid32(sgid)", |
| 1659 | arg3, sizeof(gid_t) ); |
| 1660 | } |
| 1661 | |
| 1662 | POST(getresgid32) |
| 1663 | { |
| 1664 | if (res == 0) { |
| 1665 | VG_TRACK( post_mem_write, arg1, sizeof(gid_t) ); |
| 1666 | VG_TRACK( post_mem_write, arg2, sizeof(gid_t) ); |
| 1667 | VG_TRACK( post_mem_write, arg3, sizeof(gid_t) ); |
| 1668 | } |
| 1669 | } |
| 1670 | |
| 1671 | PRE(getresuid) |
| 1672 | { |
| 1673 | /* int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid); */ |
| 1674 | MAYBE_PRINTF("getresuid ( %p, %p, %p )\n", arg1,arg2,arg3); |
| 1675 | SYSCALL_TRACK( pre_mem_write, tid, "getresuid(ruid)", |
| 1676 | arg1, sizeof(uid_t) ); |
| 1677 | SYSCALL_TRACK( pre_mem_write, tid, "getresuid(euid)", |
| 1678 | arg2, sizeof(uid_t) ); |
| 1679 | SYSCALL_TRACK( pre_mem_write, tid, "getresuid(suid)", |
| 1680 | arg3, sizeof(uid_t) ); |
| 1681 | } |
| 1682 | |
| 1683 | POST(getresuid) |
| 1684 | { |
| 1685 | if (res == 0) { |
| 1686 | VG_TRACK( post_mem_write, arg1, sizeof(uid_t) ); |
| 1687 | VG_TRACK( post_mem_write, arg2, sizeof(uid_t) ); |
| 1688 | VG_TRACK( post_mem_write, arg3, sizeof(uid_t) ); |
| 1689 | } |
| 1690 | } |
| 1691 | |
| 1692 | PRE(getresuid32) |
| 1693 | { |
| 1694 | /* int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid); */ |
| 1695 | MAYBE_PRINTF("getresuid32 ( %p, %p, %p )\n", arg1,arg2,arg3); |
| 1696 | SYSCALL_TRACK( pre_mem_write, tid, "getresuid32(ruid)", |
| 1697 | arg1, sizeof(uid_t) ); |
| 1698 | SYSCALL_TRACK( pre_mem_write, tid, "getresuid32(euid)", |
| 1699 | arg2, sizeof(uid_t) ); |
| 1700 | SYSCALL_TRACK( pre_mem_write, tid, "getresuid32(suid)", |
| 1701 | arg3, sizeof(uid_t) ); |
| 1702 | } |
| 1703 | |
| 1704 | POST(getresuid32) |
| 1705 | { |
| 1706 | if (res == 0) { |
| 1707 | VG_TRACK( post_mem_write, arg1, sizeof(uid_t) ); |
| 1708 | VG_TRACK( post_mem_write, arg2, sizeof(uid_t) ); |
| 1709 | VG_TRACK( post_mem_write, arg3, sizeof(uid_t) ); |
| 1710 | } |
| 1711 | } |
| 1712 | |
| 1713 | PRE(getrlimit) |
| 1714 | { |
| 1715 | /* int getrlimit (int resource, struct rlimit *rlim); */ |
| 1716 | MAYBE_PRINTF("getrlimit ( %d, %p )\n", arg1,arg2); |
| 1717 | SYSCALL_TRACK( pre_mem_write, tid, "getrlimit(rlim)", arg2, |
| 1718 | sizeof(struct rlimit) ); |
| 1719 | } |
| 1720 | |
| 1721 | POST(getrlimit) |
| 1722 | { |
| 1723 | if (res == 0) |
| 1724 | VG_TRACK( post_mem_write, arg2, sizeof(struct rlimit) ); |
| 1725 | } |
| 1726 | |
| 1727 | PREALIAS(ugetrlimit, getrlimit); |
| 1728 | POSTALIAS(ugetrlimit, getrlimit); |
| 1729 | |
| 1730 | PRE(getrusage) |
| 1731 | { |
| 1732 | /* int getrusage (int who, struct rusage *usage); */ |
| 1733 | MAYBE_PRINTF("getrusage ( %d, %p )\n", arg1,arg2); |
| 1734 | SYSCALL_TRACK( pre_mem_write, tid, "getrusage(usage)", arg2, |
| 1735 | sizeof(struct rusage) ); |
| 1736 | } |
| 1737 | |
| 1738 | POST(getrusage) |
| 1739 | { |
| 1740 | if (res == 0) |
| 1741 | VG_TRACK( post_mem_write,arg2, sizeof(struct rusage) ); |
| 1742 | } |
| 1743 | |
| 1744 | PRE(gettimeofday) |
| 1745 | { |
| 1746 | /* int gettimeofday(struct timeval *tv, struct timezone *tz); */ |
| 1747 | MAYBE_PRINTF("gettimeofday ( %p, %p )\n",arg1,arg2); |
| 1748 | SYSCALL_TRACK( pre_mem_write, tid, "gettimeofday(tv)", arg1, |
| 1749 | sizeof(struct timeval) ); |
| 1750 | if (arg2 != 0) |
| 1751 | SYSCALL_TRACK( pre_mem_write, tid, "gettimeofday(tz)", arg2, |
| 1752 | sizeof(struct timezone) ); |
| 1753 | } |
| 1754 | |
| 1755 | POST(gettimeofday) |
| 1756 | { |
| 1757 | if (res == 0) { |
| 1758 | VG_TRACK( post_mem_write, arg1, sizeof(struct timeval) ); |
| 1759 | if (arg2 != 0) |
| 1760 | VG_TRACK( post_mem_write, arg2, sizeof(struct timezone) ); |
| 1761 | } |
| 1762 | } |
| 1763 | |
| 1764 | PRE(getuid) |
| 1765 | { |
| 1766 | /* uid_t getuid(void); */ |
| 1767 | MAYBE_PRINTF("getuid ( )\n"); |
| 1768 | } |
| 1769 | |
| 1770 | PRE(getuid32) |
| 1771 | { |
| 1772 | /* ???uid_t getuid32(void); */ |
| 1773 | MAYBE_PRINTF("getuid32 ( )\n"); |
| 1774 | } |
| 1775 | |
| 1776 | PRE(ipc) |
| 1777 | { |
| 1778 | MAYBE_PRINTF("ipc ( %d, %d, %d, %d, %p, %d )\n", |
| 1779 | arg1,arg2,arg3,arg4,arg5,arg6); |
| 1780 | switch (arg1 /* call */) { |
| 1781 | case 1: /* IPCOP_semop */ |
| 1782 | SYSCALL_TRACK( pre_mem_read, tid, "semop(sops)", arg5, |
| 1783 | arg3 * sizeof(struct sembuf) ); |
| 1784 | break; |
| 1785 | case 2: /* IPCOP_semget */ |
| 1786 | case 3: /* IPCOP_semctl */ |
| 1787 | break; |
| 1788 | case 11: /* IPCOP_msgsnd */ |
| 1789 | { |
| 1790 | struct msgbuf *msgp = (struct msgbuf *)arg5; |
| 1791 | Int msgsz = arg3; |
| 1792 | |
| 1793 | SYSCALL_TRACK( pre_mem_read, tid, "msgsnd(msgp->mtype)", |
| 1794 | (UInt)&msgp->mtype, sizeof(msgp->mtype) ); |
| 1795 | SYSCALL_TRACK( pre_mem_read, tid, "msgsnd(msgp->mtext)", |
| 1796 | (UInt)msgp->mtext, msgsz ); |
| 1797 | break; |
| 1798 | } |
| 1799 | case 12: /* IPCOP_msgrcv */ |
| 1800 | { |
| 1801 | struct msgbuf *msgp; |
| 1802 | Int msgsz = arg3; |
| 1803 | |
| 1804 | msgp = (struct msgbuf *)deref_Addr( tid, |
| 1805 | (Addr) (&((struct ipc_kludge *)arg5)->msgp), |
| 1806 | "msgrcv(msgp)" ); |
| 1807 | |
| 1808 | SYSCALL_TRACK( pre_mem_write, tid, "msgrcv(msgp->mtype)", |
| 1809 | (UInt)&msgp->mtype, sizeof(msgp->mtype) ); |
| 1810 | SYSCALL_TRACK( pre_mem_write, tid, "msgrcv(msgp->mtext)", |
| 1811 | (UInt)msgp->mtext, msgsz ); |
| 1812 | break; |
| 1813 | } |
| 1814 | case 13: /* IPCOP_msgget */ |
| 1815 | break; |
| 1816 | case 14: /* IPCOP_msgctl */ |
| 1817 | { |
| 1818 | switch (arg3 /* cmd */) { |
| 1819 | case IPC_STAT: |
| 1820 | SYSCALL_TRACK( pre_mem_write, tid, "msgctl(buf)", arg5, |
| 1821 | sizeof(struct msqid_ds) ); |
| 1822 | break; |
| 1823 | case IPC_SET: |
| 1824 | SYSCALL_TRACK( pre_mem_read, tid, "msgctl(buf)", arg5, |
| 1825 | sizeof(struct msqid_ds) ); |
| 1826 | break; |
| 1827 | # if defined(IPC_64) |
| 1828 | case IPC_STAT|IPC_64: |
| 1829 | SYSCALL_TRACK( pre_mem_write, tid, "msgctl(buf)", arg5, |
| 1830 | sizeof(struct msqid64_ds) ); |
| 1831 | break; |
| 1832 | # endif |
| 1833 | # if defined(IPC_64) |
| 1834 | case IPC_SET|IPC_64: |
| 1835 | SYSCALL_TRACK( pre_mem_read, tid, "msgctl(buf)", arg5, |
| 1836 | sizeof(struct msqid64_ds) ); |
| 1837 | break; |
| 1838 | # endif |
| 1839 | default: |
| 1840 | break; |
| 1841 | } |
| 1842 | break; |
| 1843 | } |
| 1844 | case 21: /* IPCOP_shmat */ |
| 1845 | { |
| 1846 | break; |
| 1847 | } |
| 1848 | case 22: /* IPCOP_shmdt */ |
| 1849 | break; |
| 1850 | case 23: /* IPCOP_shmget */ |
| 1851 | break; |
| 1852 | case 24: /* IPCOP_shmctl */ |
| 1853 | /* Subject: shmctl: The True Story |
| 1854 | Date: Thu, 9 May 2002 18:07:23 +0100 (BST) |
| 1855 | From: Reuben Thomas <rrt@mupsych.org> |
| 1856 | To: Julian Seward <jseward@acm.org> |
| 1857 | |
| 1858 | 1. As you suggested, the syscall subop is in arg1. |
| 1859 | |
| 1860 | 2. There are a couple more twists, so the arg order |
| 1861 | is actually: |
| 1862 | |
| 1863 | arg1 syscall subop |
| 1864 | arg2 file desc |
| 1865 | arg3 shm operation code (can have IPC_64 set) |
| 1866 | arg4 0 ??? is arg3-arg4 a 64-bit quantity when IPC_64 |
| 1867 | is defined? |
| 1868 | arg5 pointer to buffer |
| 1869 | |
| 1870 | 3. With this in mind, I've amended the case as below: |
| 1871 | */ |
| 1872 | { |
| 1873 | UInt cmd = arg3; |
| 1874 | Bool out_arg = False; |
| 1875 | if ( arg5 ) { |
| 1876 | # if defined(IPC_64) |
| 1877 | cmd = cmd & (~IPC_64); |
| 1878 | # endif |
| 1879 | out_arg = cmd == SHM_STAT || cmd == IPC_STAT; |
| 1880 | if ( out_arg ) |
| 1881 | SYSCALL_TRACK( pre_mem_write, tid, |
| 1882 | "shmctl(SHM_STAT or IPC_STAT,buf)", |
| 1883 | arg5, sizeof(struct shmid_ds) ); |
| 1884 | else |
| 1885 | SYSCALL_TRACK( pre_mem_read, tid, |
| 1886 | "shmctl(SHM_XXXX,buf)", |
| 1887 | arg5, sizeof(struct shmid_ds) ); |
| 1888 | } |
| 1889 | } |
| 1890 | break; |
| 1891 | default: |
| 1892 | VG_(message)(Vg_DebugMsg, |
| 1893 | "FATAL: unhandled syscall(ipc) %d", |
| 1894 | arg1 ); |
| 1895 | VG_(core_panic)("... bye!\n"); |
| 1896 | break; /*NOTREACHED*/ |
| 1897 | } |
| 1898 | } |
| 1899 | |
| 1900 | POST(ipc) |
| 1901 | { |
| 1902 | switch (arg1 /* call */) { |
| 1903 | case 1: /* IPCOP_semop */ |
| 1904 | break; |
| 1905 | case 2: /* IPCOP_semget */ |
| 1906 | case 3: /* IPCOP_semctl */ |
| 1907 | break; |
| 1908 | case 11: /* IPCOP_msgsnd */ |
| 1909 | break; |
| 1910 | case 12: /* IPCOP_msgrcv */ |
| 1911 | { |
| 1912 | struct msgbuf *msgp; |
| 1913 | |
| 1914 | msgp = (struct msgbuf *)deref_Addr( tid, |
| 1915 | (Addr) (&((struct ipc_kludge *)arg5)->msgp), |
| 1916 | "msgrcv(msgp)" ); |
| 1917 | if ( res > 0 ) { |
| 1918 | VG_TRACK( post_mem_write, (UInt)&msgp->mtype, |
| 1919 | sizeof(msgp->mtype) ); |
| 1920 | VG_TRACK( post_mem_write, (UInt)msgp->mtext, res ); |
| 1921 | } |
| 1922 | break; |
| 1923 | } |
| 1924 | case 13: /* IPCOP_msgget */ |
| 1925 | break; |
| 1926 | case 14: /* IPCOP_msgctl */ |
| 1927 | { |
| 1928 | switch (arg3 /* cmd */) { |
| 1929 | case IPC_STAT: |
| 1930 | if ( res > 0 ) { |
| 1931 | VG_TRACK( post_mem_write, arg5, |
| 1932 | sizeof(struct msqid_ds) ); |
| 1933 | } |
| 1934 | break; |
| 1935 | case IPC_SET: |
| 1936 | break; |
| 1937 | # if defined(IPC_64) |
| 1938 | case IPC_STAT|IPC_64: |
| 1939 | if ( res > 0 ) { |
| 1940 | VG_TRACK( post_mem_write, arg5, |
| 1941 | sizeof(struct msqid64_ds) ); |
| 1942 | } |
| 1943 | break; |
| 1944 | # endif |
| 1945 | # if defined(IPC_64) |
| 1946 | case IPC_SET|IPC_64: |
| 1947 | break; |
| 1948 | # endif |
| 1949 | default: |
| 1950 | break; |
| 1951 | } |
| 1952 | break; |
| 1953 | } |
| 1954 | case 21: /* IPCOP_shmat */ |
| 1955 | { |
| 1956 | Int shmid = arg2; |
| 1957 | /*Int shmflag = arg3;*/ |
| 1958 | Addr addr; |
| 1959 | |
| 1960 | |
| 1961 | /* force readability. before the syscall it is |
| 1962 | * indeed uninitialized, as can be seen in |
| 1963 | * glibc/sysdeps/unix/sysv/linux/shmat.c */ |
| 1964 | VG_TRACK( post_mem_write, arg4, sizeof( ULong ) ); |
| 1965 | |
| 1966 | addr = deref_Addr ( tid, arg4, "shmat(addr)" ); |
| 1967 | if ( addr > 0 ) { |
| 1968 | UInt segmentSize = get_shm_size ( shmid ); |
| 1969 | if ( segmentSize > 0 ) { |
| 1970 | /* we don't distinguish whether it's read-only or |
| 1971 | * read-write -- it doesn't matter really. */ |
| 1972 | VG_TRACK( new_mem_mmap, addr, segmentSize, |
| 1973 | True, True, False ); |
| 1974 | } |
| 1975 | } |
| 1976 | break; |
| 1977 | } |
| 1978 | case 22: /* IPCOP_shmdt */ |
| 1979 | /* ### FIXME: this should call make_noaccess on the |
| 1980 | * area passed to shmdt. But there's no way to |
| 1981 | * figure out the size of the shared memory segment |
| 1982 | * just from the address... Maybe we want to keep a |
| 1983 | * copy of the exiting mappings inside valgrind? */ |
| 1984 | break; |
| 1985 | case 23: /* IPCOP_shmget */ |
| 1986 | break; |
| 1987 | case 24: /* IPCOP_shmctl */ |
| 1988 | /* Subject: shmctl: The True Story |
| 1989 | Date: Thu, 9 May 2002 18:07:23 +0100 (BST) |
| 1990 | From: Reuben Thomas <rrt@mupsych.org> |
| 1991 | To: Julian Seward <jseward@acm.org> |
| 1992 | |
| 1993 | 1. As you suggested, the syscall subop is in arg1. |
| 1994 | |
| 1995 | 2. There are a couple more twists, so the arg order |
| 1996 | is actually: |
| 1997 | |
| 1998 | arg1 syscall subop |
| 1999 | arg2 file desc |
| 2000 | arg3 shm operation code (can have IPC_64 set) |
| 2001 | arg4 0 ??? is arg3-arg4 a 64-bit quantity when IPC_64 |
| 2002 | is defined? |
| 2003 | arg5 pointer to buffer |
| 2004 | |
| 2005 | 3. With this in mind, I've amended the case as below: |
| 2006 | */ |
| 2007 | { |
| 2008 | UInt cmd = arg3; |
| 2009 | Bool out_arg = False; |
| 2010 | if ( arg5 ) { |
| 2011 | # if defined(IPC_64) |
| 2012 | cmd = cmd & (~IPC_64); |
| 2013 | # endif |
| 2014 | out_arg = cmd == SHM_STAT || cmd == IPC_STAT; |
| 2015 | } |
| 2016 | if ( arg5 && res == 0 && out_arg ) |
| 2017 | VG_TRACK( post_mem_write, arg5, |
| 2018 | sizeof(struct shmid_ds) ); |
| 2019 | } |
| 2020 | break; |
| 2021 | default: |
| 2022 | VG_(message)(Vg_DebugMsg, |
| 2023 | "FATAL: unhandled syscall(ipc) %d", |
| 2024 | arg1 ); |
| 2025 | VG_(core_panic)("... bye!\n"); |
| 2026 | break; /*NOTREACHED*/ |
| 2027 | } |
| 2028 | } |
| 2029 | |
| 2030 | PRE(ioctl) |
| 2031 | { |
| 2032 | /* int ioctl(int d, int request, ...) |
| 2033 | [The "third" argument is traditionally char *argp, |
| 2034 | and will be so named for this discussion.] |
| 2035 | */ |
| 2036 | /* |
| 2037 | VG_(message)( |
| 2038 | Vg_DebugMsg, |
| 2039 | "is an IOCTL, request = 0x%x, d = %d, argp = 0x%x", |
| 2040 | arg2,arg1,arg3); |
| 2041 | */ |
| 2042 | MAYBE_PRINTF("ioctl ( %d, 0x%x, %p )\n",arg1,arg2,arg3); |
| 2043 | switch (arg2 /* request */) { |
| 2044 | case TCSETS: |
| 2045 | case TCSETSW: |
| 2046 | case TCSETSF: |
| 2047 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(TCSET{S,SW,SF})", arg3, |
| 2048 | VKI_SIZEOF_STRUCT_TERMIOS ); |
| 2049 | break; |
| 2050 | case TCGETS: |
| 2051 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(TCGETS)", arg3, |
| 2052 | VKI_SIZEOF_STRUCT_TERMIOS ); |
| 2053 | break; |
| 2054 | case TCSETA: |
| 2055 | case TCSETAW: |
| 2056 | case TCSETAF: |
| 2057 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(TCSET{A,AW,AF})", arg3, |
| 2058 | VKI_SIZEOF_STRUCT_TERMIO ); |
| 2059 | break; |
| 2060 | case TCGETA: |
| 2061 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(TCGETA)", arg3, |
| 2062 | VKI_SIZEOF_STRUCT_TERMIO ); |
| 2063 | break; |
| 2064 | case TCSBRK: |
| 2065 | case TCXONC: |
| 2066 | case TCSBRKP: |
| 2067 | case TCFLSH: |
| 2068 | /* These just take an int by value */ |
| 2069 | break; |
| 2070 | case TIOCGWINSZ: |
| 2071 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(TIOCGWINSZ)", arg3, |
| 2072 | sizeof(struct winsize) ); |
| 2073 | break; |
| 2074 | case TIOCSWINSZ: |
| 2075 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(TIOCSWINSZ)", arg3, |
| 2076 | sizeof(struct winsize) ); |
| 2077 | break; |
| 2078 | case TIOCLINUX: |
| 2079 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(TIOCLINUX)", arg3, |
| 2080 | sizeof(char *) ); |
| 2081 | if (*(char *)arg3 == 11) { |
| 2082 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(TIOCLINUX, 11)", |
| 2083 | arg3, 2 * sizeof(char *) ); |
| 2084 | } |
| 2085 | break; |
| 2086 | case TIOCGPGRP: |
| 2087 | /* Get process group ID for foreground processing group. */ |
| 2088 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(TIOCGPGRP)", arg3, |
| 2089 | sizeof(pid_t) ); |
| 2090 | break; |
| 2091 | case TIOCSPGRP: |
| 2092 | /* Set a process group ID? */ |
| 2093 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(TIOCGPGRP)", arg3, |
| 2094 | sizeof(pid_t) ); |
| 2095 | break; |
| 2096 | case TIOCGPTN: /* Get Pty Number (of pty-mux device) */ |
| 2097 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(TIOCGPTN)", |
| 2098 | arg3, sizeof(int) ); |
| 2099 | break; |
| 2100 | case TIOCSCTTY: |
| 2101 | /* Just takes an int value. */ |
| 2102 | break; |
| 2103 | case TIOCSPTLCK: /* Lock/unlock Pty */ |
| 2104 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(TIOCSPTLCK)", |
| 2105 | arg3, sizeof(int) ); |
| 2106 | break; |
| 2107 | case FIONBIO: |
| 2108 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(FIONBIO)", |
| 2109 | arg3, sizeof(int) ); |
| 2110 | break; |
| 2111 | case FIOASYNC: |
| 2112 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(FIOASYNC)", |
| 2113 | arg3, sizeof(int) ); |
| 2114 | break; |
| 2115 | case FIONREAD: /* identical to SIOCINQ */ |
| 2116 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(FIONREAD)", |
| 2117 | arg3, sizeof(int) ); |
| 2118 | break; |
| 2119 | |
| 2120 | /* If you get compilation problems here, change the #if |
| 2121 | 1 to #if 0 and get rid of <scsi/sg.h> in |
| 2122 | vg_unsafe.h. */ |
| 2123 | # if 1 |
| 2124 | case SG_SET_COMMAND_Q: |
| 2125 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(SG_SET_COMMAND_Q)", |
| 2126 | arg3, sizeof(int) ); |
| 2127 | break; |
| 2128 | # if defined(SG_IO) |
| 2129 | case SG_IO: |
| 2130 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(SG_IO)", arg3, |
| 2131 | sizeof(struct sg_io_hdr) ); |
| 2132 | break; |
| 2133 | # endif /* SG_IO */ |
| 2134 | case SG_GET_SCSI_ID: |
| 2135 | /* Note: sometimes sg_scsi_id is called sg_scsi_id_t */ |
| 2136 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(SG_GET_SCSI_ID)", arg3, |
| 2137 | sizeof(struct sg_scsi_id) ); |
| 2138 | break; |
| 2139 | case SG_SET_RESERVED_SIZE: |
| 2140 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(SG_SET_RESERVED_SIZE)", |
| 2141 | arg3, sizeof(int) ); |
| 2142 | break; |
| 2143 | case SG_SET_TIMEOUT: |
| 2144 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(SG_SET_TIMEOUT)", arg3, |
| 2145 | sizeof(int) ); |
| 2146 | break; |
| 2147 | case SG_GET_RESERVED_SIZE: |
| 2148 | SYSCALL_TRACK( pre_mem_write, tid, |
| 2149 | "ioctl(SG_GET_RESERVED_SIZE)", arg3, |
| 2150 | sizeof(int) ); |
| 2151 | break; |
| 2152 | case SG_GET_TIMEOUT: |
| 2153 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(SG_GET_TIMEOUT)", arg3, |
| 2154 | sizeof(int) ); |
| 2155 | break; |
| 2156 | case SG_GET_VERSION_NUM: |
| 2157 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(SG_GET_VERSION_NUM)", |
| 2158 | arg3, sizeof(int) ); |
| 2159 | break; |
| 2160 | # endif |
| 2161 | |
| 2162 | case IIOCGETCPS: |
| 2163 | /* In early 2.4 kernels, ISDN_MAX_CHANNELS was only defined |
| 2164 | * when KERNEL was. I never saw a larger value than 64 though */ |
| 2165 | # ifndef ISDN_MAX_CHANNELS |
| 2166 | # define ISDN_MAX_CHANNELS 64 |
| 2167 | # endif |
| 2168 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(IIOCGETCPS)", arg3, |
| 2169 | ISDN_MAX_CHANNELS |
| 2170 | * 2 * sizeof(unsigned long) ); |
| 2171 | break; |
| 2172 | case IIOCNETGPN: |
| 2173 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(IIOCNETGPN)", |
| 2174 | (UInt)&((isdn_net_ioctl_phone *)arg3)->name, |
| 2175 | sizeof(((isdn_net_ioctl_phone *)arg3)->name) ); |
| 2176 | SYSCALL_TRACK( pre_mem_write, tid, "ioctl(IIOCNETGPN)", arg3, |
| 2177 | sizeof(isdn_net_ioctl_phone) ); |
| 2178 | break; |
| 2179 | |
| 2180 | /* These all use struct ifreq AFAIK */ |
| 2181 | case SIOCGIFINDEX: |
| 2182 | case SIOCGIFFLAGS: /* get flags */ |
| 2183 | case SIOCGIFHWADDR: /* Get hardware address */ |
| 2184 | case SIOCGIFMTU: /* get MTU size */ |
| 2185 | case SIOCGIFADDR: /* get PA address */ |
| 2186 | case SIOCGIFNETMASK: /* get network PA mask */ |
| 2187 | case SIOCGIFMETRIC: /* get metric */ |
| 2188 | case SIOCGIFMAP: /* Get device parameters */ |
| 2189 | case SIOCGIFTXQLEN: /* Get the tx queue length */ |
| 2190 | case SIOCGIFDSTADDR: /* get remote PA address */ |
| 2191 | case SIOCGIFBRDADDR: /* get broadcast PA address */ |
| 2192 | case SIOCGIFNAME: /* get iface name */ |
| 2193 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(SIOCGIFINDEX)", arg3, |
| 2194 | sizeof(struct ifreq)); |
| 2195 | break; |
| 2196 | case SIOCGIFCONF: /* get iface list */ |
| 2197 | /* WAS: |
| 2198 | SYSCALL_TRACK( pre_mem_write,"ioctl(SIOCGIFCONF)", arg3, |
| 2199 | sizeof(struct ifconf)); |
| 2200 | KERNEL_DO_SYSCALL(tid,res); |
| 2201 | if (!VG_(is_kerror)(res) && res == 0) |
| 2202 | VG_TRACK( post_mem_write,arg3, sizeof(struct ifconf)); |
| 2203 | */ |
| 2204 | SYSCALL_TRACK( pre_mem_read,tid, "ioctl(SIOCGIFCONF)", arg3, |
| 2205 | sizeof(struct ifconf)); |
| 2206 | if ( arg3 ) { |
| 2207 | // TODO len must be readable and writable |
| 2208 | // buf pointer only needs to be readable |
| 2209 | struct ifconf *ifc = (struct ifconf *) arg3; |
| 2210 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(SIOCGIFCONF).ifc_buf", |
| 2211 | (Addr)(ifc->ifc_buf), (UInt)(ifc->ifc_len) ); |
| 2212 | } |
| 2213 | break; |
| 2214 | case SIOCGSTAMP: |
| 2215 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(SIOCGSTAMP)", arg3, |
| 2216 | sizeof(struct timeval)); |
| 2217 | break; |
| 2218 | /* SIOCOUTQ is an ioctl that, when called on a socket, returns |
| 2219 | the number of bytes currently in that socket's send buffer. |
| 2220 | It writes this value as an int to the memory location |
| 2221 | indicated by the third argument of ioctl(2). */ |
| 2222 | case SIOCOUTQ: |
| 2223 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(SIOCOUTQ)", arg3, |
| 2224 | sizeof(int)); |
| 2225 | break; |
| 2226 | case SIOCGRARP: /* get RARP table entry */ |
| 2227 | case SIOCGARP: /* get ARP table entry */ |
| 2228 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(SIOCGARP)", arg3, |
| 2229 | sizeof(struct arpreq)); |
| 2230 | break; |
| 2231 | |
| 2232 | case SIOCSIFFLAGS: /* set flags */ |
| 2233 | case SIOCSIFMAP: /* Set device parameters */ |
| 2234 | case SIOCSIFTXQLEN: /* Set the tx queue length */ |
| 2235 | case SIOCSIFDSTADDR: /* set remote PA address */ |
| 2236 | case SIOCSIFBRDADDR: /* set broadcast PA address */ |
| 2237 | case SIOCSIFNETMASK: /* set network PA mask */ |
| 2238 | case SIOCSIFMETRIC: /* set metric */ |
| 2239 | case SIOCSIFADDR: /* set PA address */ |
| 2240 | case SIOCSIFMTU: /* set MTU size */ |
| 2241 | case SIOCSIFHWADDR: /* set hardware address */ |
| 2242 | SYSCALL_TRACK( pre_mem_read,tid,"ioctl(SIOCSIFFLAGS)", arg3, |
| 2243 | sizeof(struct ifreq)); |
| 2244 | break; |
| 2245 | /* Routing table calls. */ |
| 2246 | case SIOCADDRT: /* add routing table entry */ |
| 2247 | case SIOCDELRT: /* delete routing table entry */ |
| 2248 | SYSCALL_TRACK( pre_mem_read,tid,"ioctl(SIOCADDRT/DELRT)", arg3, |
| 2249 | sizeof(struct rtentry)); |
| 2250 | break; |
| 2251 | |
| 2252 | /* RARP cache control calls. */ |
| 2253 | case SIOCDRARP: /* delete RARP table entry */ |
| 2254 | case SIOCSRARP: /* set RARP table entry */ |
| 2255 | /* ARP cache control calls. */ |
| 2256 | case SIOCSARP: /* set ARP table entry */ |
| 2257 | case SIOCDARP: /* delete ARP table entry */ |
| 2258 | SYSCALL_TRACK( pre_mem_read,tid, "ioctl(SIOCSIFFLAGS)", arg3, |
| 2259 | sizeof(struct ifreq)); |
| 2260 | break; |
| 2261 | |
| 2262 | case SIOCSPGRP: |
| 2263 | SYSCALL_TRACK( pre_mem_read, tid, "ioctl(SIOCSPGRP)", arg3, |
| 2264 | sizeof(int) ); |
| 2265 | break; |
| 2266 | |
| 2267 | /* linux/soundcard interface (OSS) */ |
| 2268 | case SNDCTL_SEQ_GETOUTCOUNT: |
| 2269 | case SNDCTL_SEQ_GETINCOUNT: |
| 2270 | case SNDCTL_SEQ_PERCMODE: |
| 2271 | case SNDCTL_SEQ_TESTMIDI: |
| 2272 | case SNDCTL_SEQ_RESETSAMPLES: |
| 2273 | case SNDCTL_SEQ_NRSYNTHS: |
| 2274 | case SNDCTL_SEQ_NRMIDIS: |
| 2275 | case SNDCTL_SEQ_GETTIME: |
| 2276 | case SNDCTL_DSP_GETFMTS: |
| 2277 | case SNDCTL_DSP_GETTRIGGER: |
| 2278 | case SNDCTL_DSP_GETODELAY: |
| 2279 | # if defined(SNDCTL_DSP_GETSPDIF) |
| 2280 | case SNDCTL_DSP_GETSPDIF: |
| 2281 | # endif |
| 2282 | case SNDCTL_DSP_GETCAPS: |
| 2283 | case SOUND_PCM_READ_RATE: |
| 2284 | case SOUND_PCM_READ_CHANNELS: |
| 2285 | case SOUND_PCM_READ_BITS: |
| 2286 | case (SOUND_PCM_READ_BITS|0x40000000): /* what the fuck ? */ |
| 2287 | case SOUND_PCM_READ_FILTER: |
| 2288 | SYSCALL_TRACK( pre_mem_write,tid, |
| 2289 | "ioctl(SNDCTL_XXX|SOUND_XXX (SIOR, int))", |
| 2290 | arg3, |
| 2291 | sizeof(int)); |
| 2292 | break; |
| 2293 | case SNDCTL_SEQ_CTRLRATE: |
| 2294 | case SNDCTL_DSP_SPEED: |
| 2295 | case SNDCTL_DSP_STEREO: |
| 2296 | case SNDCTL_DSP_GETBLKSIZE: |
| 2297 | case SNDCTL_DSP_CHANNELS: |
| 2298 | case SOUND_PCM_WRITE_FILTER: |
| 2299 | case SNDCTL_DSP_SUBDIVIDE: |
| 2300 | case SNDCTL_DSP_SETFRAGMENT: |
| 2301 | # if defined(SNDCTL_DSP_GETCHANNELMASK) |
| 2302 | case SNDCTL_DSP_GETCHANNELMASK: |
| 2303 | # endif |
| 2304 | # if defined(SNDCTL_DSP_BIND_CHANNEL) |
| 2305 | case SNDCTL_DSP_BIND_CHANNEL: |
| 2306 | # endif |
| 2307 | case SNDCTL_TMR_TIMEBASE: |
| 2308 | case SNDCTL_TMR_TEMPO: |
| 2309 | case SNDCTL_TMR_SOURCE: |
| 2310 | case SNDCTL_MIDI_PRETIME: |
| 2311 | case SNDCTL_MIDI_MPUMODE: |
| 2312 | SYSCALL_TRACK( pre_mem_read,tid, "ioctl(SNDCTL_XXX|SOUND_XXX " |
| 2313 | "(SIOWR, int))", |
| 2314 | arg3, sizeof(int)); |
| 2315 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(SNDCTL_XXX|SOUND_XXX " |
| 2316 | "(SIOWR, int))", |
| 2317 | arg3, sizeof(int)); |
| 2318 | break; |
| 2319 | case SNDCTL_DSP_GETOSPACE: |
| 2320 | case SNDCTL_DSP_GETISPACE: |
| 2321 | SYSCALL_TRACK( pre_mem_write,tid, |
| 2322 | "ioctl(SNDCTL_XXX|SOUND_XXX " |
| 2323 | "(SIOR, audio_buf_info))", arg3, |
| 2324 | sizeof(audio_buf_info)); |
| 2325 | break; |
| 2326 | case SNDCTL_DSP_SETTRIGGER: |
| 2327 | SYSCALL_TRACK( pre_mem_read,tid, |
| 2328 | "ioctl(SNDCTL_XXX|SOUND_XXX (SIOW, int))", |
| 2329 | arg3, sizeof(int)); |
| 2330 | break; |
| 2331 | |
| 2332 | case SNDCTL_DSP_POST: |
| 2333 | case SNDCTL_DSP_RESET: |
| 2334 | case SNDCTL_DSP_SYNC: |
| 2335 | case SNDCTL_DSP_SETSYNCRO: |
| 2336 | case SNDCTL_DSP_SETDUPLEX: |
| 2337 | break; |
| 2338 | |
| 2339 | /* Real Time Clock (/dev/rtc) ioctls */ |
| 2340 | # ifndef GLIBC_2_1 |
| 2341 | case RTC_UIE_ON: |
| 2342 | case RTC_UIE_OFF: |
| 2343 | case RTC_AIE_ON: |
| 2344 | case RTC_AIE_OFF: |
| 2345 | case RTC_PIE_ON: |
| 2346 | case RTC_PIE_OFF: |
| 2347 | case RTC_IRQP_SET: |
| 2348 | break; |
| 2349 | case RTC_RD_TIME: |
| 2350 | case RTC_ALM_READ: |
| 2351 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(RTC_RD_TIME/ALM_READ)", |
| 2352 | arg3, sizeof(struct rtc_time)); |
| 2353 | break; |
| 2354 | case RTC_ALM_SET: |
| 2355 | SYSCALL_TRACK( pre_mem_read,tid, "ioctl(RTC_ALM_SET)", arg3, |
| 2356 | sizeof(struct rtc_time)); |
| 2357 | break; |
| 2358 | case RTC_IRQP_READ: |
| 2359 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(RTC_IRQP_READ)", arg3, |
| 2360 | sizeof(unsigned long)); |
| 2361 | break; |
| 2362 | # endif /* GLIBC_2_1 */ |
| 2363 | |
| 2364 | # ifdef BLKGETSIZE |
| 2365 | case BLKGETSIZE: |
| 2366 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(BLKGETSIZE)", arg3, |
| 2367 | sizeof(unsigned long)); |
| 2368 | break; |
| 2369 | # endif /* BLKGETSIZE */ |
| 2370 | |
| 2371 | /* CD ROM stuff (??) */ |
| 2372 | case CDROMSUBCHNL: |
| 2373 | SYSCALL_TRACK( pre_mem_read,tid, |
| 2374 | "ioctl(CDROMSUBCHNL (cdsc_format, char))", |
| 2375 | (int) &(((struct cdrom_subchnl *) arg3)->cdsc_format), |
| 2376 | sizeof(((struct cdrom_subchnl *) arg3)->cdsc_format)); |
| 2377 | SYSCALL_TRACK( pre_mem_write,tid, |
| 2378 | "ioctl(CDROMSUBCHNL)", arg3, |
| 2379 | sizeof(struct cdrom_subchnl)); |
| 2380 | break; |
| 2381 | case CDROMREADTOCHDR: |
| 2382 | SYSCALL_TRACK( pre_mem_write,tid, |
| 2383 | "ioctl(CDROMREADTOCHDR)", arg3, |
| 2384 | sizeof(struct cdrom_tochdr)); |
| 2385 | break; |
| 2386 | case CDROMREADTOCENTRY: |
| 2387 | SYSCALL_TRACK( pre_mem_read,tid, |
| 2388 | "ioctl(CDROMREADTOCENTRY (cdte_format, char))", |
| 2389 | (int) &(((struct cdrom_tocentry *) arg3)->cdte_format), |
| 2390 | sizeof(((struct cdrom_tocentry *) arg3)->cdte_format)); |
| 2391 | SYSCALL_TRACK( pre_mem_read,tid, |
| 2392 | "ioctl(CDROMREADTOCENTRY (cdte_track, char))", |
| 2393 | (int) &(((struct cdrom_tocentry *) arg3)->cdte_track), |
| 2394 | sizeof(((struct cdrom_tocentry *) arg3)->cdte_track)); |
| 2395 | SYSCALL_TRACK( pre_mem_write,tid, |
| 2396 | "ioctl(CDROMREADTOCENTRY)", arg3, |
| 2397 | sizeof(struct cdrom_tocentry)); |
| 2398 | break; |
| 2399 | case CDROMPLAYMSF: |
| 2400 | SYSCALL_TRACK( pre_mem_read,tid, "ioctl(CDROMPLAYMSF)", arg3, |
| 2401 | sizeof(struct cdrom_msf)); |
| 2402 | break; |
| 2403 | /* The following two are probably bogus (should check args |
| 2404 | for readability). JRS 20021117 */ |
| 2405 | case CDROM_DRIVE_STATUS: /* 0x5326 */ |
| 2406 | case CDROM_CLEAR_OPTIONS: /* 0x5321 */ |
| 2407 | break; |
| 2408 | |
| 2409 | /* We don't have any specific information on it, so |
| 2410 | try to do something reasonable based on direction and |
| 2411 | size bits. The encoding scheme is described in |
| 2412 | /usr/include/asm/ioctl.h. |
| 2413 | |
| 2414 | According to Simon Hausmann, _IOC_READ means the kernel |
| 2415 | writes a value to the ioctl value passed from the user |
| 2416 | space and the other way around with _IOC_WRITE. */ |
| 2417 | default: { |
| 2418 | UInt dir = _IOC_DIR(arg2); |
| 2419 | UInt size = _IOC_SIZE(arg2); |
| 2420 | if (VG_(strstr)(VG_(clo_weird_hacks), "lax-ioctls") != NULL) { |
| 2421 | /* |
| 2422 | * Be very lax about ioctl handling; the only |
| 2423 | * assumption is that the size is correct. Doesn't |
| 2424 | * require the full buffer to be initialized when |
| 2425 | * writing. Without this, using some device |
| 2426 | * drivers with a large number of strange ioctl |
| 2427 | * commands becomes very tiresome. |
| 2428 | */ |
| 2429 | } else if (/* size == 0 || */ dir == _IOC_NONE) { |
| 2430 | static Int moans = 3; |
| 2431 | if (moans > 0) { |
| 2432 | moans--; |
| 2433 | VG_(message)(Vg_UserMsg, |
| 2434 | "Warning: noted but unhandled ioctl 0x%x" |
| 2435 | " with no size/direction hints", |
| 2436 | arg2); |
| 2437 | VG_(message)(Vg_UserMsg, |
| 2438 | " This could cause spurious value errors" |
| 2439 | " to appear."); |
| 2440 | VG_(message)(Vg_UserMsg, |
| 2441 | " See README_MISSING_SYSCALL_OR_IOCTL for " |
| 2442 | "guidance on writing a proper wrapper." ); |
| 2443 | } |
| 2444 | } else { |
| 2445 | if ((dir & _IOC_WRITE) && size > 0) |
| 2446 | SYSCALL_TRACK( pre_mem_read,tid, "ioctl(generic)", |
| 2447 | arg3, size); |
| 2448 | if ((dir & _IOC_READ) && size > 0) |
| 2449 | SYSCALL_TRACK( pre_mem_write,tid, "ioctl(generic)", |
| 2450 | arg3, size); |
| 2451 | } |
| 2452 | break; |
| 2453 | } |
| 2454 | } |
| 2455 | } |
| 2456 | |
| 2457 | POST(ioctl) |
| 2458 | { |
| 2459 | /* int ioctl(int d, int request, ...) |
| 2460 | [The "third" argument is traditionally char *argp, |
| 2461 | and will be so named for this discussion.] |
| 2462 | */ |
| 2463 | /* |
| 2464 | VG_(message)( |
| 2465 | Vg_DebugMsg, |
| 2466 | "is an IOCTL, request = 0x%x, d = %d, argp = 0x%x", |
| 2467 | arg2,arg1,arg3); |
| 2468 | */ |
| 2469 | MAYBE_PRINTF("ioctl ( %d, 0x%x, %p )\n",arg1,arg2,arg3); |
| 2470 | switch (arg2 /* request */) { |
| 2471 | case TCSETS: |
| 2472 | case TCSETSW: |
| 2473 | case TCSETSF: |
| 2474 | break; |
| 2475 | case TCGETS: |
| 2476 | if (res == 0) |
| 2477 | VG_TRACK( post_mem_write, arg3, VKI_SIZEOF_STRUCT_TERMIOS ); |
| 2478 | break; |
| 2479 | case TCSETA: |
| 2480 | case TCSETAW: |
| 2481 | case TCSETAF: |
| 2482 | break; |
| 2483 | case TCGETA: |
| 2484 | if (res == 0) |
| 2485 | VG_TRACK( post_mem_write, arg3, VKI_SIZEOF_STRUCT_TERMIO ); |
| 2486 | break; |
| 2487 | case TCSBRK: |
| 2488 | case TCXONC: |
| 2489 | case TCSBRKP: |
| 2490 | case TCFLSH: |
| 2491 | break; |
| 2492 | case TIOCGWINSZ: |
| 2493 | if (res == 0) |
| 2494 | VG_TRACK( post_mem_write, arg3, sizeof(struct winsize) ); |
| 2495 | break; |
| 2496 | case TIOCSWINSZ: |
| 2497 | break; |
| 2498 | case TIOCLINUX: |
| 2499 | if (res == 0) |
| 2500 | VG_TRACK( post_mem_write, arg3, sizeof(char *) ); |
| 2501 | break; |
| 2502 | case TIOCGPGRP: |
| 2503 | /* Get process group ID for foreground processing group. */ |
| 2504 | if (res == 0) |
| 2505 | VG_TRACK( post_mem_write, arg3, sizeof(pid_t) ); |
| 2506 | break; |
| 2507 | case TIOCSPGRP: |
| 2508 | /* Set a process group ID? */ |
| 2509 | if (res == 0) |
| 2510 | VG_TRACK( post_mem_write, arg3, sizeof(pid_t) ); |
| 2511 | break; |
| 2512 | case TIOCGPTN: /* Get Pty Number (of pty-mux device) */ |
| 2513 | if (res == 0) |
| 2514 | VG_TRACK( post_mem_write, arg3, sizeof(int)); |
| 2515 | break; |
| 2516 | case TIOCSCTTY: |
| 2517 | break; |
| 2518 | case TIOCSPTLCK: /* Lock/unlock Pty */ |
| 2519 | break; |
| 2520 | case FIONBIO: |
| 2521 | break; |
| 2522 | case FIOASYNC: |
| 2523 | break; |
| 2524 | case FIONREAD: /* identical to SIOCINQ */ |
| 2525 | if (res == 0) |
| 2526 | VG_TRACK( post_mem_write, arg3, sizeof(int) ); |
| 2527 | break; |
| 2528 | |
| 2529 | /* If you get compilation problems here, change the #if |
| 2530 | 1 to #if 0 and get rid of <scsi/sg.h> in |
| 2531 | vg_unsafe.h. */ |
| 2532 | # if 1 |
| 2533 | case SG_SET_COMMAND_Q: |
| 2534 | break; |
| 2535 | # if defined(SG_IO) |
| 2536 | case SG_IO: |
| 2537 | if (res == 0) |
| 2538 | VG_TRACK( post_mem_write,arg3, sizeof(struct sg_io_hdr)); |
| 2539 | break; |
| 2540 | # endif /* SG_IO */ |
| 2541 | case SG_GET_SCSI_ID: |
| 2542 | if (res == 0) |
| 2543 | VG_TRACK( post_mem_write,arg3, sizeof(struct sg_scsi_id)); |
| 2544 | break; |
| 2545 | case SG_SET_RESERVED_SIZE: |
| 2546 | break; |
| 2547 | case SG_SET_TIMEOUT: |
| 2548 | break; |
| 2549 | case SG_GET_RESERVED_SIZE: |
| 2550 | if (res == 0) |
| 2551 | VG_TRACK( post_mem_write,arg3, sizeof(int)); |
| 2552 | break; |
| 2553 | case SG_GET_TIMEOUT: |
| 2554 | if (res == 0) |
| 2555 | VG_TRACK( post_mem_write,arg3, sizeof(int)); |
| 2556 | break; |
| 2557 | case SG_GET_VERSION_NUM: |
| 2558 | break; |
| 2559 | # endif |
| 2560 | |
| 2561 | case IIOCGETCPS: |
| 2562 | /* In early 2.4 kernels, ISDN_MAX_CHANNELS was only defined |
| 2563 | * when KERNEL was. I never saw a larger value than 64 though */ |
| 2564 | # ifndef ISDN_MAX_CHANNELS |
| 2565 | # define ISDN_MAX_CHANNELS 64 |
| 2566 | # endif |
| 2567 | if (res == 0) |
| 2568 | VG_TRACK( post_mem_write, arg3, ISDN_MAX_CHANNELS |
| 2569 | * 2 * sizeof(unsigned long) ); |
| 2570 | break; |
| 2571 | case IIOCNETGPN: |
| 2572 | if (res == 0) |
| 2573 | VG_TRACK( post_mem_write, arg3, sizeof(isdn_net_ioctl_phone) ); |
| 2574 | break; |
| 2575 | |
| 2576 | /* These all use struct ifreq AFAIK */ |
| 2577 | case SIOCGIFINDEX: |
| 2578 | case SIOCGIFFLAGS: /* get flags */ |
| 2579 | case SIOCGIFHWADDR: /* Get hardware address */ |
| 2580 | case SIOCGIFMTU: /* get MTU size */ |
| 2581 | case SIOCGIFADDR: /* get PA address */ |
| 2582 | case SIOCGIFNETMASK: /* get network PA mask */ |
| 2583 | case SIOCGIFMETRIC: /* get metric */ |
| 2584 | case SIOCGIFMAP: /* Get device parameters */ |
| 2585 | case SIOCGIFTXQLEN: /* Get the tx queue length */ |
| 2586 | case SIOCGIFDSTADDR: /* get remote PA address */ |
| 2587 | case SIOCGIFBRDADDR: /* get broadcast PA address */ |
| 2588 | case SIOCGIFNAME: /* get iface name */ |
| 2589 | if (res == 0) |
| 2590 | VG_TRACK( post_mem_write,arg3, sizeof(struct ifreq)); |
| 2591 | break; |
| 2592 | case SIOCGIFCONF: /* get iface list */ |
| 2593 | /* WAS: |
| 2594 | SYSCALL_TRACK( pre_mem_write,"ioctl(SIOCGIFCONF)", arg3, |
| 2595 | sizeof(struct ifconf)); |
| 2596 | KERNEL_DO_SYSCALL(tid,res); |
| 2597 | if (!VG_(is_kerror)(res) && res == 0) |
| 2598 | VG_TRACK( post_mem_write,arg3, sizeof(struct ifconf)); |
| 2599 | */ |
| 2600 | if (res == 0 && arg3 ) { |
| 2601 | struct ifconf *ifc = (struct ifconf *) arg3; |
| 2602 | if (ifc->ifc_buf != NULL) |
| 2603 | VG_TRACK( post_mem_write, (Addr)(ifc->ifc_buf), |
| 2604 | (UInt)(ifc->ifc_len) ); |
| 2605 | } |
| 2606 | break; |
| 2607 | case SIOCGSTAMP: |
| 2608 | if (res == 0) |
| 2609 | VG_TRACK( post_mem_write,arg3, sizeof(struct timeval)); |
| 2610 | break; |
| 2611 | /* SIOCOUTQ is an ioctl that, when called on a socket, returns |
| 2612 | the number of bytes currently in that socket's send buffer. |
| 2613 | It writes this value as an int to the memory location |
| 2614 | indicated by the third argument of ioctl(2). */ |
| 2615 | case SIOCOUTQ: |
| 2616 | if (res == 0) |
| 2617 | VG_TRACK( post_mem_write,arg3, sizeof(int)); |
| 2618 | break; |
| 2619 | case SIOCGRARP: /* get RARP table entry */ |
| 2620 | case SIOCGARP: /* get ARP table entry */ |
| 2621 | if (res == 0) |
| 2622 | VG_TRACK( post_mem_write,arg3, sizeof(struct arpreq)); |
| 2623 | break; |
| 2624 | |
| 2625 | case SIOCSIFFLAGS: /* set flags */ |
| 2626 | case SIOCSIFMAP: /* Set device parameters */ |
| 2627 | case SIOCSIFTXQLEN: /* Set the tx queue length */ |
| 2628 | case SIOCSIFDSTADDR: /* set remote PA address */ |
| 2629 | case SIOCSIFBRDADDR: /* set broadcast PA address */ |
| 2630 | case SIOCSIFNETMASK: /* set network PA mask */ |
| 2631 | case SIOCSIFMETRIC: /* set metric */ |
| 2632 | case SIOCSIFADDR: /* set PA address */ |
| 2633 | case SIOCSIFMTU: /* set MTU size */ |
| 2634 | case SIOCSIFHWADDR: /* set hardware address */ |
| 2635 | break; |
| 2636 | /* Routing table calls. */ |
| 2637 | case SIOCADDRT: /* add routing table entry */ |
| 2638 | case SIOCDELRT: /* delete routing table entry */ |
| 2639 | break; |
| 2640 | |
| 2641 | /* RARP cache control calls. */ |
| 2642 | case SIOCDRARP: /* delete RARP table entry */ |
| 2643 | case SIOCSRARP: /* set RARP table entry */ |
| 2644 | /* ARP cache control calls. */ |
| 2645 | case SIOCSARP: /* set ARP table entry */ |
| 2646 | case SIOCDARP: /* delete ARP table entry */ |
| 2647 | break; |
| 2648 | |
| 2649 | case SIOCSPGRP: |
| 2650 | break; |
| 2651 | |
| 2652 | /* linux/soundcard interface (OSS) */ |
| 2653 | case SNDCTL_SEQ_GETOUTCOUNT: |
| 2654 | case SNDCTL_SEQ_GETINCOUNT: |
| 2655 | case SNDCTL_SEQ_PERCMODE: |
| 2656 | case SNDCTL_SEQ_TESTMIDI: |
| 2657 | case SNDCTL_SEQ_RESETSAMPLES: |
| 2658 | case SNDCTL_SEQ_NRSYNTHS: |
| 2659 | case SNDCTL_SEQ_NRMIDIS: |
| 2660 | case SNDCTL_SEQ_GETTIME: |
| 2661 | case SNDCTL_DSP_GETFMTS: |
| 2662 | case SNDCTL_DSP_GETTRIGGER: |
| 2663 | case SNDCTL_DSP_GETODELAY: |
| 2664 | # if defined(SNDCTL_DSP_GETSPDIF) |
| 2665 | case SNDCTL_DSP_GETSPDIF: |
| 2666 | # endif |
| 2667 | case SNDCTL_DSP_GETCAPS: |
| 2668 | case SOUND_PCM_READ_RATE: |
| 2669 | case SOUND_PCM_READ_CHANNELS: |
| 2670 | case SOUND_PCM_READ_BITS: |
| 2671 | case (SOUND_PCM_READ_BITS|0x40000000): /* what the fuck ? */ |
| 2672 | case SOUND_PCM_READ_FILTER: |
| 2673 | if (res == 0) |
| 2674 | VG_TRACK( post_mem_write,arg3, sizeof(int)); |
| 2675 | break; |
| 2676 | case SNDCTL_SEQ_CTRLRATE: |
| 2677 | case SNDCTL_DSP_SPEED: |
| 2678 | case SNDCTL_DSP_STEREO: |
| 2679 | case SNDCTL_DSP_GETBLKSIZE: |
| 2680 | case SNDCTL_DSP_CHANNELS: |
| 2681 | case SOUND_PCM_WRITE_FILTER: |
| 2682 | case SNDCTL_DSP_SUBDIVIDE: |
| 2683 | case SNDCTL_DSP_SETFRAGMENT: |
| 2684 | # if defined(SNDCTL_DSP_GETCHANNELMASK) |
| 2685 | case SNDCTL_DSP_GETCHANNELMASK: |
| 2686 | # endif |
| 2687 | # if defined(SNDCTL_DSP_BIND_CHANNEL) |
| 2688 | case SNDCTL_DSP_BIND_CHANNEL: |
| 2689 | # endif |
| 2690 | case SNDCTL_TMR_TIMEBASE: |
| 2691 | case SNDCTL_TMR_TEMPO: |
| 2692 | case SNDCTL_TMR_SOURCE: |
| 2693 | case SNDCTL_MIDI_PRETIME: |
| 2694 | case SNDCTL_MIDI_MPUMODE: |
| 2695 | break; |
| 2696 | case SNDCTL_DSP_GETOSPACE: |
| 2697 | case SNDCTL_DSP_GETISPACE: |
| 2698 | if (res == 0) |
| 2699 | VG_TRACK( post_mem_write,arg3, sizeof(audio_buf_info)); |
| 2700 | break; |
| 2701 | case SNDCTL_DSP_SETTRIGGER: |
| 2702 | break; |
| 2703 | |
| 2704 | case SNDCTL_DSP_POST: |
| 2705 | case SNDCTL_DSP_RESET: |
| 2706 | case SNDCTL_DSP_SYNC: |
| 2707 | case SNDCTL_DSP_SETSYNCRO: |
| 2708 | case SNDCTL_DSP_SETDUPLEX: |
| 2709 | break; |
| 2710 | |
| 2711 | /* Real Time Clock (/dev/rtc) ioctls */ |
| 2712 | # ifndef GLIBC_2_1 |
| 2713 | case RTC_UIE_ON: |
| 2714 | case RTC_UIE_OFF: |
| 2715 | case RTC_AIE_ON: |
| 2716 | case RTC_AIE_OFF: |
| 2717 | case RTC_PIE_ON: |
| 2718 | case RTC_PIE_OFF: |
| 2719 | case RTC_IRQP_SET: |
| 2720 | break; |
| 2721 | case RTC_RD_TIME: |
| 2722 | case RTC_ALM_READ: |
| 2723 | if (res == 0) |
| 2724 | VG_TRACK( post_mem_write,arg3, sizeof(struct rtc_time)); |
| 2725 | break; |
| 2726 | case RTC_ALM_SET: |
| 2727 | break; |
| 2728 | case RTC_IRQP_READ: |
| 2729 | if(res == 0) |
| 2730 | VG_TRACK( post_mem_write,arg3, sizeof(unsigned long)); |
| 2731 | break; |
| 2732 | # endif /* GLIBC_2_1 */ |
| 2733 | |
| 2734 | # ifdef BLKGETSIZE |
| 2735 | case BLKGETSIZE: |
| 2736 | if (res == 0) |
| 2737 | VG_TRACK( post_mem_write,arg3, sizeof(unsigned long)); |
| 2738 | break; |
| 2739 | # endif /* BLKGETSIZE */ |
| 2740 | |
| 2741 | /* CD ROM stuff (??) */ |
| 2742 | case CDROMSUBCHNL: |
| 2743 | if (res == 0) |
| 2744 | VG_TRACK( post_mem_write,arg3, sizeof(struct cdrom_subchnl)); |
| 2745 | break; |
| 2746 | case CDROMREADTOCHDR: |
| 2747 | if (res == 0) |
| 2748 | VG_TRACK( post_mem_write,arg3, sizeof(struct cdrom_tochdr)); |
| 2749 | break; |
| 2750 | case CDROMREADTOCENTRY: |
| 2751 | if (res == 0) |
| 2752 | VG_TRACK( post_mem_write,arg3, sizeof(struct cdrom_tochdr)); |
| 2753 | break; |
| 2754 | case CDROMPLAYMSF: |
| 2755 | break; |
| 2756 | /* The following two are probably bogus (should check args |
| 2757 | for readability). JRS 20021117 */ |
| 2758 | case CDROM_DRIVE_STATUS: /* 0x5326 */ |
| 2759 | case CDROM_CLEAR_OPTIONS: /* 0x5321 */ |
| 2760 | break; |
| 2761 | |
| 2762 | /* We don't have any specific information on it, so |
| 2763 | try to do something reasonable based on direction and |
| 2764 | size bits. The encoding scheme is described in |
| 2765 | /usr/include/asm/ioctl.h. |
| 2766 | |
| 2767 | According to Simon Hausmann, _IOC_READ means the kernel |
| 2768 | writes a value to the ioctl value passed from the user |
| 2769 | space and the other way around with _IOC_WRITE. */ |
| 2770 | default: { |
| 2771 | UInt dir = _IOC_DIR(arg2); |
| 2772 | UInt size = _IOC_SIZE(arg2); |
| 2773 | if (size > 0 && (dir & _IOC_READ) |
| 2774 | && res == 0 |
| 2775 | && arg3 != (Addr)NULL) |
| 2776 | VG_TRACK( post_mem_write,arg3, size); |
| 2777 | break; |
| 2778 | } |
| 2779 | } |
| 2780 | } |
| 2781 | |
| 2782 | PRE(kill) |
| 2783 | { |
| 2784 | /* int kill(pid_t pid, int sig); */ |
| 2785 | MAYBE_PRINTF("kill ( %d, %d )\n", arg1,arg2); |
| 2786 | if (arg2 == VKI_SIGVGINT || arg2 == VKI_SIGVGKILL) |
| 2787 | res = -VKI_EINVAL; |
| 2788 | } |
| 2789 | |
| 2790 | POST(kill) |
| 2791 | { |
| 2792 | /* If this was a self-kill then wait for a signal to be |
| 2793 | delivered to any thread before claiming the kill is done. */ |
| 2794 | if (res >= 0 && /* if it was successful */ |
| 2795 | arg2 != 0 && /* if a real signal */ |
| 2796 | !VG_(is_sig_ign)(arg2) && /* that isn't ignored and */ |
| 2797 | !VG_(ksigismember)(&tst->eff_sig_mask, arg2) && /* we're not blocking it */ |
| 2798 | (arg1 == VG_(getpid)() || /* directed at us or */ |
| 2799 | arg1 == -1 || /* directed at everyone or */ |
| 2800 | arg1 == 0 || /* directed at whole group or */ |
| 2801 | -arg1 == VG_(getpgrp)())) { /* directed at our group... */ |
| 2802 | /* ...then wait for that signal to be delivered to someone |
| 2803 | (might be us, might be someone else who doesn't have it |
| 2804 | blocked) */ |
| 2805 | VG_(proxy_waitsig)(); |
| 2806 | } |
| 2807 | } |
| 2808 | |
| 2809 | PRE(link) |
| 2810 | { |
| 2811 | /* int link(const char *oldpath, const char *newpath); */ |
| 2812 | MAYBE_PRINTF("link ( %p, %p)\n", arg1, arg2); |
| 2813 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "link(oldpath)", arg1); |
| 2814 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "link(newpath)", arg2); |
| 2815 | } |
| 2816 | |
| 2817 | PRE(lseek) |
| 2818 | { |
| 2819 | /* off_t lseek(int fildes, off_t offset, int whence); */ |
| 2820 | MAYBE_PRINTF("lseek ( %d, %d, %d )\n",arg1,arg2,arg3); |
| 2821 | } |
| 2822 | |
| 2823 | PRE(_llseek) |
| 2824 | { |
| 2825 | /* int _llseek(unsigned int fd, unsigned long offset_high, |
| 2826 | unsigned long offset_low, |
| 2827 | loff_t * result, unsigned int whence); */ |
| 2828 | MAYBE_PRINTF("llseek ( %d, 0x%x, 0x%x, %p, %d )\n", |
| 2829 | arg1,arg2,arg3,arg4,arg5); |
| 2830 | SYSCALL_TRACK( pre_mem_write, tid, "llseek(result)", arg4, |
| 2831 | sizeof(loff_t)); |
| 2832 | } |
| 2833 | |
| 2834 | POST(_llseek) |
| 2835 | { |
| 2836 | if (res == 0) |
| 2837 | VG_TRACK( post_mem_write, arg4, sizeof(loff_t) ); |
| 2838 | } |
| 2839 | |
| 2840 | PRE(lstat) |
| 2841 | { |
| 2842 | /* int lstat(const char *file_name, struct stat *buf); */ |
| 2843 | MAYBE_PRINTF("lstat ( %p, %p )\n",arg1,arg2); |
| 2844 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "lstat(file_name)", arg1 ); |
| 2845 | SYSCALL_TRACK( pre_mem_write, tid, "lstat(buf)", arg2, |
| 2846 | sizeof(struct stat) ); |
| 2847 | } |
| 2848 | |
| 2849 | POST(lstat) |
| 2850 | { |
| 2851 | if (res == 0) { |
| 2852 | VG_TRACK( post_mem_write, arg2, sizeof(struct stat) ); |
| 2853 | } |
| 2854 | } |
| 2855 | |
| 2856 | PRE(lstat64) |
| 2857 | { |
| 2858 | /* int lstat64(const char *file_name, struct stat64 *buf); */ |
| 2859 | MAYBE_PRINTF("lstat64 ( %p, %p )\n",arg1,arg2); |
| 2860 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "lstat64(file_name)", arg1 ); |
| 2861 | SYSCALL_TRACK( pre_mem_write, tid, "lstat64(buf)", arg2, |
| 2862 | sizeof(struct stat64) ); |
| 2863 | } |
| 2864 | |
| 2865 | POST(lstat64) |
| 2866 | { |
| 2867 | if (res == 0) { |
| 2868 | VG_TRACK( post_mem_write, arg2, sizeof(struct stat64) ); |
| 2869 | } |
| 2870 | } |
| 2871 | |
| 2872 | PRE(mkdir) |
| 2873 | { |
| 2874 | /* int mkdir(const char *pathname, mode_t mode); */ |
| 2875 | MAYBE_PRINTF("mkdir ( %p, %d )\n", arg1,arg2); |
| 2876 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "mkdir(pathname)", arg1 ); |
| 2877 | } |
| 2878 | |
| 2879 | PRE(mmap2) |
| 2880 | { |
| 2881 | /* My impression is that this is exactly like __NR_mmap |
| 2882 | except that all 6 args are passed in regs, rather than in |
| 2883 | a memory-block. */ |
| 2884 | /* void* mmap(void *start, size_t length, int prot, |
| 2885 | int flags, int fd, off_t offset); |
| 2886 | */ |
| 2887 | MAYBE_PRINTF("mmap2 ( %p, %d, %d, %d, %d, %d )\n", |
| 2888 | arg1, arg2, arg3, arg4, arg5, arg6 ); |
| 2889 | } |
| 2890 | |
| 2891 | POST(mmap2) |
| 2892 | { |
| 2893 | mmap_segment( (Addr)res, arg2, arg3, arg5 ); |
| 2894 | } |
| 2895 | |
| 2896 | PRE(mmap) |
| 2897 | { |
| 2898 | /* void* mmap(void *start, size_t length, int prot, |
| 2899 | int flags, int fd, off_t offset); |
| 2900 | */ |
| 2901 | |
| 2902 | UInt* arg_block = (UInt*)arg1; |
| 2903 | UInt a1, a2, a3, a4, a5, a6; |
| 2904 | |
| 2905 | SYSCALL_TRACK( pre_mem_read, tid, "mmap(args)", arg1, 6*sizeof(UInt) ); |
| 2906 | |
| 2907 | a1 = arg_block[0]; |
| 2908 | a2 = arg_block[1]; |
| 2909 | a3 = arg_block[2]; |
| 2910 | a4 = arg_block[3]; |
| 2911 | a5 = arg_block[4]; |
| 2912 | a6 = arg_block[5]; |
| 2913 | MAYBE_PRINTF("mmap ( %p, %d, %d, %d, %d, %d )\n", |
| 2914 | a1, a2, a3, a4, a5, a6 ); |
| 2915 | } |
| 2916 | |
| 2917 | POST(mmap) |
| 2918 | { |
| 2919 | UInt* arg_block = (UInt*)arg1; |
| 2920 | UInt a2, a3, a5; |
| 2921 | |
| 2922 | a2 = arg_block[1]; |
| 2923 | a3 = arg_block[2]; |
| 2924 | a5 = arg_block[4]; |
| 2925 | |
| 2926 | mmap_segment( (Addr)res, a2, a3, a5 ); |
| 2927 | } |
| 2928 | |
| 2929 | PRE(mprotect) |
| 2930 | { |
| 2931 | /* int mprotect(const void *addr, size_t len, int prot); */ |
| 2932 | /* should addr .. addr+len-1 be checked before the call? */ |
| 2933 | MAYBE_PRINTF("mprotect ( %p, %d, %d )\n", arg1,arg2,arg3); |
| 2934 | } |
| 2935 | |
| 2936 | POST(mprotect) |
| 2937 | { |
| 2938 | mprotect_segment( arg1, arg2, arg3 ); |
| 2939 | } |
| 2940 | |
| 2941 | PRE(munmap) |
| 2942 | { |
| 2943 | /* int munmap(void *start, size_t length); */ |
| 2944 | /* should start .. start+length-1 be checked before the call? */ |
| 2945 | MAYBE_PRINTF("munmap ( %p, %d )\n", arg1,arg2); |
| 2946 | } |
| 2947 | |
| 2948 | POST(munmap) |
| 2949 | { |
| 2950 | munmap_segment( arg1, arg2 ); |
| 2951 | } |
| 2952 | |
| 2953 | PRE(nanosleep) |
| 2954 | { |
| 2955 | /* int nanosleep(const struct timespec *req, struct timespec *rem); */ |
| 2956 | MAYBE_PRINTF("nanosleep ( %p, %p )\n", arg1,arg2); |
| 2957 | SYSCALL_TRACK( pre_mem_read, tid, "nanosleep(req)", arg1, |
| 2958 | sizeof(struct timespec) ); |
| 2959 | if (arg2 != (UInt)NULL) |
| 2960 | SYSCALL_TRACK( pre_mem_write, tid, "nanosleep(rem)", arg2, |
| 2961 | sizeof(struct timespec) ); |
| 2962 | } |
| 2963 | |
| 2964 | POST(nanosleep) |
| 2965 | { |
| 2966 | /* Somewhat bogus ... is only written by the kernel if |
| 2967 | res == -1 && errno == EINTR. */ |
| 2968 | if (arg2 != (UInt)NULL) |
| 2969 | VG_TRACK( post_mem_write, arg2, sizeof(struct timespec) ); |
| 2970 | } |
| 2971 | |
| 2972 | PRE(_newselect) |
| 2973 | { |
| 2974 | /* int select(int n, |
| 2975 | fd_set *readfds, fd_set *writefds, fd_set *exceptfds, |
| 2976 | struct timeval *timeout); |
| 2977 | */ |
| 2978 | MAYBE_PRINTF("newselect ( %d, %p, %p, %p, %p )\n", |
| 2979 | arg1,arg2,arg3,arg4,arg5); |
| 2980 | if (arg2 != 0) |
| 2981 | SYSCALL_TRACK( pre_mem_read, tid, "newselect(readfds)", |
| 2982 | arg2, arg1/8 /* __FD_SETSIZE/8 */ ); |
| 2983 | if (arg3 != 0) |
| 2984 | SYSCALL_TRACK( pre_mem_read, tid, "newselect(writefds)", |
| 2985 | arg3, arg1/8 /* __FD_SETSIZE/8 */ ); |
| 2986 | if (arg4 != 0) |
| 2987 | SYSCALL_TRACK( pre_mem_read, tid, "newselect(exceptfds)", |
| 2988 | arg4, arg1/8 /* __FD_SETSIZE/8 */ ); |
| 2989 | if (arg5 != 0) |
| 2990 | SYSCALL_TRACK( pre_mem_read, tid, "newselect(timeout)", arg5, |
| 2991 | sizeof(struct timeval) ); |
| 2992 | } |
| 2993 | |
| 2994 | PRE(open) |
| 2995 | { |
| 2996 | /* int open(const char *pathname, int flags); */ |
| 2997 | MAYBE_PRINTF("open ( %p(%s), %d ) --> ",arg1,arg1,arg2); |
| 2998 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "open(pathname)", arg1 ); |
| 2999 | } |
| 3000 | |
| 3001 | POST(open) |
| 3002 | { |
| 3003 | if (!fd_allowed(res, "open", tid)) { |
| 3004 | VG_(close)(res); |
| 3005 | res = -VKI_EMFILE; |
| 3006 | } |
| 3007 | MAYBE_PRINTF("%d\n",res); |
| 3008 | } |
| 3009 | |
| 3010 | PRE(read) |
| 3011 | { |
| 3012 | /* size_t read(int fd, void *buf, size_t count); */ |
| 3013 | MAYBE_PRINTF("read ( %d, %p, %d )\n", arg1, arg2, arg3); |
| 3014 | |
| 3015 | if (!fd_allowed(arg1, "read", tid)) |
| 3016 | res = -VKI_EBADF; |
| 3017 | } |
| 3018 | |
| 3019 | POST(read) |
| 3020 | { |
| 3021 | if (res > 0) |
| 3022 | VG_TRACK(post_mem_write, arg2, res); |
| 3023 | } |
| 3024 | |
| 3025 | PRE(write) |
| 3026 | { |
| 3027 | /* size_t write(int fd, const void *buf, size_t count); */ |
| 3028 | MAYBE_PRINTF("write ( %d, %p, %d )\n", arg1, arg2, arg3); |
| 3029 | if (!fd_allowed(arg1, "write", tid)) |
| 3030 | res = -VKI_EBADF; |
| 3031 | else |
| 3032 | SYSCALL_TRACK( pre_mem_read, tid, "write(buf)", arg2, arg3 ); |
| 3033 | } |
| 3034 | |
| 3035 | PRE(creat) |
| 3036 | { |
| 3037 | /* int creat(const char *pathname, mode_t mode); */ |
| 3038 | MAYBE_PRINTF("creat ( %p(%s), %d ) --> ",arg1,arg1,arg2); |
| 3039 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "creat(pathname)", arg1 ); |
| 3040 | } |
| 3041 | |
| 3042 | POST(creat) |
| 3043 | { |
| 3044 | if (!fd_allowed(res, "creat", tid)) { |
| 3045 | VG_(close)(res); |
| 3046 | res = -VKI_EMFILE; |
| 3047 | } |
| 3048 | MAYBE_PRINTF("%d\n",res); |
| 3049 | } |
| 3050 | |
| 3051 | PRE(pipe) |
| 3052 | { |
| 3053 | /* int pipe(int filedes[2]); */ |
| 3054 | MAYBE_PRINTF("pipe ( %p ) ...\n", arg1); |
| 3055 | SYSCALL_TRACK( pre_mem_write, tid, "pipe(filedes)", |
| 3056 | arg1, 2*sizeof(int) ); |
| 3057 | } |
| 3058 | |
| 3059 | POST(pipe) |
| 3060 | { |
| 3061 | Int *p = (Int *)arg1; |
| 3062 | |
| 3063 | if (!fd_allowed(p[0], "pipe", tid) || |
| 3064 | !fd_allowed(p[1], "pipe", tid)) { |
| 3065 | VG_(close)(p[0]); |
| 3066 | VG_(close)(p[1]); |
| 3067 | res = -VKI_EMFILE; |
| 3068 | } else |
| 3069 | VG_TRACK( post_mem_write, arg1, 2*sizeof(int) ); |
| 3070 | |
| 3071 | MAYBE_PRINTF("SYSCALL[%d] pipe --> %d (rd %d, wr %d)\n", |
| 3072 | VG_(getpid)(), res, |
| 3073 | ((UInt*)arg1)[0], ((UInt*)arg1)[1] ); |
| 3074 | } |
| 3075 | |
| 3076 | PRE(poll) |
| 3077 | { |
| 3078 | /* struct pollfd { |
| 3079 | int fd; -- file descriptor |
| 3080 | short events; -- requested events |
| 3081 | short revents; -- returned events |
| 3082 | }; |
| 3083 | int poll(struct pollfd *ufds, unsigned int nfds, |
| 3084 | int timeout) |
| 3085 | */ |
| 3086 | MAYBE_PRINTF("poll ( %p, %d, %d )\n",arg1,arg2,arg3); |
| 3087 | /* In fact some parts of this struct should be readable too. |
| 3088 | This should be fixed properly. */ |
| 3089 | SYSCALL_TRACK( pre_mem_write, tid, "poll(ufds)", |
| 3090 | arg1, arg2 * sizeof(struct pollfd) ); |
| 3091 | } |
| 3092 | |
| 3093 | POST(poll) |
| 3094 | { |
| 3095 | if (res > 0) { |
| 3096 | UInt i; |
| 3097 | struct pollfd * arr = (struct pollfd *)arg1; |
| 3098 | for (i = 0; i < arg2; i++) |
| 3099 | VG_TRACK( post_mem_write, (Addr)(&arr[i].revents), |
| 3100 | sizeof(Short) ); |
| 3101 | } |
| 3102 | } |
| 3103 | |
| 3104 | PRE(readlink) |
| 3105 | { |
| 3106 | /* int readlink(const char *path, char *buf, size_t bufsiz); */ |
| 3107 | MAYBE_PRINTF("readlink ( %p, %p, %d )\n", arg1,arg2,arg3); |
| 3108 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "readlink(path)", arg1 ); |
| 3109 | SYSCALL_TRACK( pre_mem_write, tid, "readlink(buf)", arg2,arg3 ); |
| 3110 | } |
| 3111 | |
| 3112 | POST(readlink) |
| 3113 | { |
| 3114 | VG_TRACK( post_mem_write, arg2, res ); |
| 3115 | } |
| 3116 | |
| 3117 | PRE(readv) |
| 3118 | { |
| 3119 | /* int readv(int fd, const struct iovec * vector, size_t count); */ |
| 3120 | Int i; |
| 3121 | struct iovec * vec; |
| 3122 | MAYBE_PRINTF("readv ( %d, %p, %d )\n",arg1,arg2,arg3); |
| 3123 | if (!fd_allowed(arg1, "readv", tid)) { |
| 3124 | res = -VKI_EBADF; |
| 3125 | } else { |
| 3126 | SYSCALL_TRACK( pre_mem_read, tid, "readv(vector)", |
| 3127 | arg2, arg3 * sizeof(struct iovec) ); |
| 3128 | /* ToDo: don't do any of the following if the vector is invalid */ |
| 3129 | vec = (struct iovec *)arg2; |
| 3130 | for (i = 0; i < (Int)arg3; i++) |
| 3131 | SYSCALL_TRACK( pre_mem_write, tid, "readv(vector[...])", |
| 3132 | (UInt)vec[i].iov_base,vec[i].iov_len ); |
| 3133 | } |
| 3134 | } |
| 3135 | |
| 3136 | POST(readv) |
| 3137 | { |
| 3138 | if (res > 0) { |
| 3139 | Int i; |
| 3140 | struct iovec * vec = (struct iovec *)arg2; |
| 3141 | Int remains = res; |
| 3142 | |
| 3143 | /* res holds the number of bytes read. */ |
| 3144 | for (i = 0; i < (Int)arg3; i++) { |
| 3145 | Int nReadThisBuf = vec[i].iov_len; |
| 3146 | if (nReadThisBuf > remains) nReadThisBuf = remains; |
| 3147 | VG_TRACK( post_mem_write, (UInt)vec[i].iov_base, nReadThisBuf ); |
| 3148 | remains -= nReadThisBuf; |
| 3149 | if (remains < 0) VG_(core_panic)("readv: remains < 0"); |
| 3150 | } |
| 3151 | } |
| 3152 | } |
| 3153 | |
| 3154 | PRE(rename) |
| 3155 | { |
| 3156 | /* int rename(const char *oldpath, const char *newpath); */ |
| 3157 | MAYBE_PRINTF("rename ( %p, %p )\n", arg1, arg2 ); |
| 3158 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "rename(oldpath)", arg1 ); |
| 3159 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "rename(newpath)", arg2 ); |
| 3160 | } |
| 3161 | |
| 3162 | PRE(rmdir) |
| 3163 | { |
| 3164 | /* int rmdir(const char *pathname); */ |
| 3165 | MAYBE_PRINTF("rmdir ( %p )\n", arg1); |
| 3166 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "rmdir(pathname)", arg1 ); |
| 3167 | } |
| 3168 | |
| 3169 | PRE(sched_setparam) |
| 3170 | { |
| 3171 | /* int sched_setparam(pid_t pid, const struct sched_param *p); */ |
| 3172 | MAYBE_PRINTF("sched_setparam ( %d, %p )\n", arg1, arg2 ); |
| 3173 | SYSCALL_TRACK( pre_mem_read, tid, "sched_setparam(ptr)", |
| 3174 | arg2, sizeof(struct sched_param) ); |
| 3175 | } |
| 3176 | |
| 3177 | POST(sched_setparam) |
| 3178 | { |
| 3179 | VG_TRACK( post_mem_write, arg2, sizeof(struct sched_param) ); |
| 3180 | } |
| 3181 | |
| 3182 | PRE(sched_getparam) |
| 3183 | { |
| 3184 | /* int sched_getparam(pid_t pid, struct sched_param *p); */ |
| 3185 | MAYBE_PRINTF("sched_getparam ( %d, %p )\n", arg1, arg2 ); |
| 3186 | SYSCALL_TRACK( pre_mem_write, tid, "sched_getparam(ptr)", |
| 3187 | arg2, sizeof(struct sched_param) ); |
| 3188 | } |
| 3189 | |
| 3190 | POST(sched_getparam) |
| 3191 | { |
| 3192 | VG_TRACK( post_mem_write, arg2, sizeof(struct sched_param) ); |
| 3193 | } |
| 3194 | |
| 3195 | PRE(sched_yield) |
| 3196 | { |
| 3197 | /* int sched_yield(void); */ |
| 3198 | MAYBE_PRINTF("sched_yield ()\n" ); |
| 3199 | } |
| 3200 | |
| 3201 | PRE(select) |
| 3202 | { |
| 3203 | /* struct sel_arg_struct { |
| 3204 | unsigned long n; |
| 3205 | fd_set *inp, *outp, *exp; |
| 3206 | struct timeval *tvp; |
| 3207 | }; |
| 3208 | int old_select(struct sel_arg_struct *arg); |
| 3209 | */ |
| 3210 | SYSCALL_TRACK( pre_mem_read, tid, "select(args)", arg1, 5*sizeof(UInt) ); |
| 3211 | |
| 3212 | { |
| 3213 | UInt* arg_struct = (UInt*)arg1; |
| 3214 | UInt a1, a2, a3, a4, a5; |
| 3215 | |
| 3216 | a1 = arg_struct[0]; |
| 3217 | a2 = arg_struct[1]; |
| 3218 | a3 = arg_struct[2]; |
| 3219 | a4 = arg_struct[3]; |
| 3220 | a5 = arg_struct[4]; |
| 3221 | |
| 3222 | MAYBE_PRINTF("select ( %d, %p, %p, %p, %p )\n", |
| 3223 | a1,a2,a3,a4,a5); |
| 3224 | if (a2 != (Addr)NULL) |
| 3225 | SYSCALL_TRACK( pre_mem_read, tid, "select(readfds)", a2, |
| 3226 | a1/8 /* __FD_SETSIZE/8 */ ); |
| 3227 | if (a3 != (Addr)NULL) |
| 3228 | SYSCALL_TRACK( pre_mem_read, tid, "select(writefds)", a3, |
| 3229 | arg1/8 /* __FD_SETSIZE/8 */ ); |
| 3230 | if (a4 != (Addr)NULL) |
| 3231 | SYSCALL_TRACK( pre_mem_read, tid, "select(exceptfds)", a4, |
| 3232 | a1/8 /* __FD_SETSIZE/8 */ ); |
| 3233 | if (a5 != (Addr)NULL) |
| 3234 | SYSCALL_TRACK( pre_mem_read, tid, "select(timeout)", a5, |
| 3235 | sizeof(struct timeval) ); |
| 3236 | } |
| 3237 | } |
| 3238 | |
| 3239 | PRE(setitimer) |
| 3240 | { |
| 3241 | /* setitimer(int which, const struct itimerval *value, |
| 3242 | struct itimerval *ovalue); */ |
| 3243 | MAYBE_PRINTF("setitimer ( %d, %p, %p )\n", arg1,arg2,arg3); |
| 3244 | if (arg2 != (Addr)NULL) |
| 3245 | SYSCALL_TRACK( pre_mem_read,tid, "setitimer(value)", |
| 3246 | arg2, sizeof(struct itimerval) ); |
| 3247 | if (arg3 != (Addr)NULL) |
| 3248 | SYSCALL_TRACK( pre_mem_write,tid, "setitimer(ovalue)", |
| 3249 | arg3, sizeof(struct itimerval)); |
| 3250 | } |
| 3251 | |
| 3252 | POST(setitimer) |
| 3253 | { |
| 3254 | if (arg3 != (Addr)NULL) { |
| 3255 | VG_TRACK( post_mem_write,arg3, sizeof(struct itimerval)); |
| 3256 | } |
| 3257 | } |
| 3258 | |
| 3259 | PRE(setfsgid32) |
| 3260 | { |
| 3261 | /* int setfsgid(uid_t fsgid); */ |
| 3262 | MAYBE_PRINTF("setfsgid ( %d )\n", arg1); |
| 3263 | } |
| 3264 | |
| 3265 | PRE(setgid) |
| 3266 | { |
| 3267 | /* int setgid(gid_t gid); */ |
| 3268 | MAYBE_PRINTF("setgid ( %d )\n", arg1); |
| 3269 | } |
| 3270 | |
| 3271 | PREALIAS(setgid32, setgid); |
| 3272 | |
| 3273 | PRE(setsid) |
| 3274 | { |
| 3275 | /* pid_t setsid(void); */ |
| 3276 | MAYBE_PRINTF("setsid ()\n"); |
| 3277 | } |
| 3278 | |
| 3279 | PRE(setgroups) |
| 3280 | { |
| 3281 | /* int setgroups(size_t size, const gid_t *list); */ |
| 3282 | MAYBE_PRINTF("setgroups ( %d, %p )\n", arg1, arg2); |
| 3283 | if (arg1 > 0) |
| 3284 | SYSCALL_TRACK( pre_mem_read, tid, "setgroups(list)", arg2, |
| 3285 | arg1 * sizeof(gid_t) ); |
| 3286 | } |
| 3287 | |
| 3288 | PREALIAS(setgroups32, setgroups); |
| 3289 | |
| 3290 | PRE(setpgid) |
| 3291 | { |
| 3292 | /* int setpgid(pid_t pid, pid_t pgid); */ |
| 3293 | MAYBE_PRINTF("setpgid ( %d, %d )\n", arg1, arg2); |
| 3294 | } |
| 3295 | |
| 3296 | POST(setpgid) |
| 3297 | { |
| 3298 | VG_(main_pgrp) = VG_(getpgrp)(); |
| 3299 | } |
| 3300 | |
| 3301 | PRE(setregid32) |
| 3302 | { |
| 3303 | /* int setregid(gid_t rgid, gid_t egid); */ |
| 3304 | MAYBE_PRINTF("setregid32(?) ( %d, %d )\n", arg1, arg2); |
| 3305 | } |
| 3306 | |
| 3307 | PRE(setresuid32) |
| 3308 | { |
| 3309 | /* int setresuid(uid_t ruid, uid_t euid, uid_t suid); */ |
| 3310 | MAYBE_PRINTF("setresuid32(?) ( %d, %d, %d )\n", arg1, arg2, arg3); |
| 3311 | } |
| 3312 | |
| 3313 | PRE(setreuid) |
| 3314 | { |
| 3315 | /* int setreuid(uid_t ruid, uid_t euid); */ |
| 3316 | MAYBE_PRINTF("setreuid ( 0x%x, 0x%x )\n", arg1, arg2); |
| 3317 | } |
| 3318 | |
| 3319 | PREALIAS(setreuid32, setreuid); |
| 3320 | |
| 3321 | PRE(setrlimit) |
| 3322 | { |
| 3323 | /* int setrlimit (int resource, const struct rlimit *rlim); */ |
| 3324 | MAYBE_PRINTF("setrlimit ( %d, %p )\n", arg1,arg2); |
| 3325 | SYSCALL_TRACK( pre_mem_read, tid, "setrlimit(rlim)", |
| 3326 | arg2, sizeof(struct rlimit) ); |
| 3327 | } |
| 3328 | |
| 3329 | PRE(setuid) |
| 3330 | { |
| 3331 | /* int setuid(uid_t uid); */ |
| 3332 | MAYBE_PRINTF("setuid ( %d )\n", arg1); |
| 3333 | } |
| 3334 | |
| 3335 | PREALIAS(setuid32, setuid); |
| 3336 | |
| 3337 | PRE(socketcall) |
| 3338 | { |
| 3339 | /* int socketcall(int call, unsigned long *args); */ |
| 3340 | MAYBE_PRINTF("socketcall ( %d, %p )\n",arg1,arg2); |
| 3341 | switch (arg1 /* request */) { |
| 3342 | |
| 3343 | case SYS_SOCKETPAIR: |
| 3344 | /* int socketpair(int d, int type, int protocol, int sv[2]); */ |
| 3345 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.socketpair(args)", |
| 3346 | arg2, 4*sizeof(Addr) ); |
| 3347 | SYSCALL_TRACK( pre_mem_write, tid, "socketcall.socketpair(sv)", |
| 3348 | ((UInt*)arg2)[3], 2*sizeof(int) ); |
| 3349 | break; |
| 3350 | |
| 3351 | case SYS_SOCKET: |
| 3352 | /* int socket(int domain, int type, int protocol); */ |
| 3353 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.socket(args)", |
| 3354 | arg2, 3*sizeof(Addr) ); |
| 3355 | break; |
| 3356 | |
| 3357 | case SYS_BIND: |
| 3358 | /* int bind(int sockfd, struct sockaddr *my_addr, |
| 3359 | int addrlen); */ |
| 3360 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.bind(args)", |
| 3361 | arg2, 3*sizeof(Addr) ); |
| 3362 | pre_mem_read_sockaddr( tid, "socketcall.bind(my_addr.%s)", |
| 3363 | (struct sockaddr *) (((UInt*)arg2)[1]), ((UInt*)arg2)[2]); |
| 3364 | break; |
| 3365 | |
| 3366 | case SYS_LISTEN: |
| 3367 | /* int listen(int s, int backlog); */ |
| 3368 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.listen(args)", |
| 3369 | arg2, 2*sizeof(Addr) ); |
| 3370 | break; |
| 3371 | |
| 3372 | case SYS_ACCEPT: { |
| 3373 | /* int accept(int s, struct sockaddr *addr, int *addrlen); */ |
| 3374 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.accept(args)", |
| 3375 | arg2, 3*sizeof(Addr) ); |
| 3376 | { |
| 3377 | Addr addr_p = ((UInt*)arg2)[1]; |
| 3378 | Addr addrlen_p = ((UInt*)arg2)[2]; |
| 3379 | if (addr_p != (Addr)NULL) |
| 3380 | buf_and_len_pre_check ( tid, addr_p, addrlen_p, |
| 3381 | "socketcall.accept(addr)", |
| 3382 | "socketcall.accept(addrlen_in)" ); |
| 3383 | } |
| 3384 | break; |
| 3385 | } |
| 3386 | |
| 3387 | case SYS_SENDTO: |
| 3388 | /* int sendto(int s, const void *msg, int len, |
| 3389 | unsigned int flags, |
| 3390 | const struct sockaddr *to, int tolen); */ |
| 3391 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.sendto(args)", arg2, |
| 3392 | 6*sizeof(Addr) ); |
| 3393 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.sendto(msg)", |
| 3394 | ((UInt*)arg2)[1], /* msg */ |
| 3395 | ((UInt*)arg2)[2] /* len */ ); |
| 3396 | pre_mem_read_sockaddr( tid, "socketcall.sendto(to.%s)", |
| 3397 | (struct sockaddr *) (((UInt*)arg2)[4]), ((UInt*)arg2)[5]); |
| 3398 | break; |
| 3399 | |
| 3400 | case SYS_SEND: |
| 3401 | /* int send(int s, const void *msg, size_t len, int flags); */ |
| 3402 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.send(args)", arg2, |
| 3403 | 4*sizeof(Addr) ); |
| 3404 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.send(msg)", |
| 3405 | ((UInt*)arg2)[1], /* msg */ |
| 3406 | ((UInt*)arg2)[2] /* len */ ); |
| 3407 | break; |
| 3408 | |
| 3409 | case SYS_RECVFROM: |
| 3410 | /* int recvfrom(int s, void *buf, int len, unsigned int flags, |
| 3411 | struct sockaddr *from, int *fromlen); */ |
| 3412 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.recvfrom(args)", |
| 3413 | arg2, 6*sizeof(Addr) ); |
| 3414 | { |
| 3415 | Addr buf_p = ((UInt*)arg2)[1]; |
| 3416 | Int len = ((UInt*)arg2)[2]; |
| 3417 | Addr from_p = ((UInt*)arg2)[4]; |
| 3418 | Addr fromlen_p = ((UInt*)arg2)[5]; |
| 3419 | |
| 3420 | SYSCALL_TRACK( pre_mem_write, tid, "socketcall.recvfrom(buf)", |
| 3421 | buf_p, len ); |
| 3422 | if (from_p != (Addr)NULL) |
| 3423 | buf_and_len_pre_check ( tid, from_p, fromlen_p, |
| 3424 | "socketcall.recvfrom(from)", |
| 3425 | "socketcall.recvfrom(fromlen_in)" ); |
| 3426 | } |
| 3427 | break; |
| 3428 | |
| 3429 | case SYS_RECV: |
| 3430 | /* int recv(int s, void *buf, int len, unsigned int flags); */ |
| 3431 | /* man 2 recv says: |
| 3432 | The recv call is normally used only on a connected socket |
| 3433 | (see connect(2)) and is identical to recvfrom with a NULL |
| 3434 | from parameter. |
| 3435 | */ |
| 3436 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.recv(args)", |
| 3437 | arg2, 4*sizeof(Addr) ); |
| 3438 | SYSCALL_TRACK( pre_mem_write, tid, "socketcall.recv(buf)", |
| 3439 | ((UInt*)arg2)[1], /* buf */ |
| 3440 | ((UInt*)arg2)[2] /* len */ ); |
| 3441 | break; |
| 3442 | |
| 3443 | case SYS_CONNECT: |
| 3444 | /* int connect(int sockfd, |
| 3445 | struct sockaddr *serv_addr, int addrlen ); */ |
| 3446 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.connect(args)", |
| 3447 | arg2, 3*sizeof(Addr) ); |
| 3448 | SYSCALL_TRACK( pre_mem_read, tid, |
| 3449 | "socketcall.connect(serv_addr.sa_family)", |
| 3450 | ((UInt*)arg2)[1], /* serv_addr */ |
| 3451 | sizeof (sa_family_t)); |
| 3452 | pre_mem_read_sockaddr( tid, |
| 3453 | "socketcall.connect(serv_addr.%s)", |
| 3454 | (struct sockaddr *) (((UInt*)arg2)[1]), ((UInt*)arg2)[2]); |
| 3455 | break; |
| 3456 | |
| 3457 | case SYS_SETSOCKOPT: |
| 3458 | /* int setsockopt(int s, int level, int optname, |
| 3459 | const void *optval, int optlen); */ |
| 3460 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.setsockopt(args)", |
| 3461 | arg2, 5*sizeof(Addr) ); |
| 3462 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.setsockopt(optval)", |
| 3463 | ((UInt*)arg2)[3], /* optval */ |
| 3464 | ((UInt*)arg2)[4] /* optlen */ ); |
| 3465 | break; |
| 3466 | |
| 3467 | case SYS_GETSOCKOPT: |
| 3468 | /* int setsockopt(int s, int level, int optname, |
| 3469 | void *optval, socklen_t *optlen); */ |
| 3470 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.getsockopt(args)", |
| 3471 | arg2, 5*sizeof(Addr) ); |
| 3472 | { |
| 3473 | Addr optval_p = ((UInt*)arg2)[3]; |
| 3474 | Addr optlen_p = ((UInt*)arg2)[4]; |
| 3475 | /* vg_assert(sizeof(socklen_t) == sizeof(UInt)); */ |
| 3476 | if (optval_p != (Addr)NULL) |
| 3477 | buf_and_len_pre_check ( tid, optval_p, optlen_p, |
| 3478 | "socketcall.getsockopt(optval)", |
| 3479 | "socketcall.getsockopt(optlen)" ); |
| 3480 | } |
| 3481 | break; |
| 3482 | |
| 3483 | case SYS_GETSOCKNAME: |
| 3484 | /* int getsockname(int s, struct sockaddr* name, int* namelen) */ |
| 3485 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.getsockname(args)", |
| 3486 | arg2, 3*sizeof(Addr) ); |
| 3487 | { |
| 3488 | Addr name_p = ((UInt*)arg2)[1]; |
| 3489 | Addr namelen_p = ((UInt*)arg2)[2]; |
| 3490 | |
| 3491 | /* Nb: name_p cannot be NULL */ |
| 3492 | buf_and_len_pre_check ( tid, name_p, namelen_p, |
| 3493 | "socketcall.getsockname(name)", |
| 3494 | "socketcall.getsockname(namelen_in)" ); |
| 3495 | } |
| 3496 | break; |
| 3497 | |
| 3498 | case SYS_GETPEERNAME: |
| 3499 | /* int getpeername(int s, struct sockaddr* name, int* namelen) */ |
| 3500 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.getpeername(args)", |
| 3501 | arg2, 3*sizeof(Addr) ); |
| 3502 | { |
| 3503 | Addr name_p = ((UInt*)arg2)[1]; |
| 3504 | Addr namelen_p = ((UInt*)arg2)[2]; |
| 3505 | |
| 3506 | /* Nb: name_p cannot be NULL */ |
| 3507 | buf_and_len_pre_check ( tid, name_p, namelen_p, |
| 3508 | "socketcall.getpeername(name)", |
| 3509 | "socketcall.getpeername(namelen_in)" ); |
| 3510 | } |
| 3511 | break; |
| 3512 | |
| 3513 | case SYS_SHUTDOWN: |
| 3514 | /* int shutdown(int s, int how); */ |
| 3515 | SYSCALL_TRACK( pre_mem_read, tid, "socketcall.shutdown(args)", |
| 3516 | arg2, 2*sizeof(Addr) ); |
| 3517 | break; |
| 3518 | |
| 3519 | case SYS_SENDMSG: { |
| 3520 | /* int sendmsg(int s, const struct msghdr *msg, int flags); */ |
| 3521 | |
| 3522 | /* this causes warnings, and I don't get why. glibc bug? |
| 3523 | * (after all it's glibc providing the arguments array) |
| 3524 | SYSCALL_TRACK( pre_mem_read, "socketcall.sendmsg(args)", |
| 3525 | arg2, 3*sizeof(Addr) ); |
| 3526 | */ |
| 3527 | |
| 3528 | struct msghdr *msg = (struct msghdr *)((UInt *)arg2)[ 1 ]; |
| 3529 | msghdr_foreachfield ( tid, msg, pre_mem_read_sendmsg ); |
| 3530 | |
| 3531 | break; |
| 3532 | } |
| 3533 | |
| 3534 | case SYS_RECVMSG: { |
| 3535 | /* int recvmsg(int s, struct msghdr *msg, int flags); */ |
| 3536 | |
| 3537 | /* this causes warnings, and I don't get why. glibc bug? |
| 3538 | * (after all it's glibc providing the arguments array) |
| 3539 | SYSCALL_TRACK( pre_mem_read, "socketcall.recvmsg(args)", |
| 3540 | arg2, 3*sizeof(Addr) ); |
| 3541 | */ |
| 3542 | |
| 3543 | struct msghdr *msg = (struct msghdr *)((UInt *)arg2)[ 1 ]; |
| 3544 | msghdr_foreachfield ( tid, msg, pre_mem_write_recvmsg ); |
| 3545 | |
| 3546 | break; |
| 3547 | } |
| 3548 | |
| 3549 | default: |
jsgf | 17059e0 | 2003-10-19 16:46:06 +0000 | [diff] [blame] | 3550 | VG_(message)(Vg_DebugMsg,"Warning: unhandled socketcall 0x%x",arg1); |
| 3551 | res = -VKI_EINVAL; |
| 3552 | break; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 3553 | } |
| 3554 | } |
| 3555 | |
| 3556 | POST(socketcall) |
| 3557 | { |
| 3558 | /* int socketcall(int call, unsigned long *args); */ |
| 3559 | MAYBE_PRINTF("socketcall ( %d, %p )\n",arg1,arg2); |
| 3560 | |
| 3561 | switch (arg1 /* request */) { |
| 3562 | |
| 3563 | case SYS_SOCKETPAIR: |
| 3564 | /* XXX TODO: check return fd against VG_MAX_FD */ |
| 3565 | VG_TRACK( post_mem_write, ((UInt*)arg2)[3], 2*sizeof(int) ); |
| 3566 | break; |
| 3567 | |
| 3568 | case SYS_SOCKET: |
| 3569 | if (!fd_allowed(res, "socket", tid)) { |
| 3570 | VG_(close)(res); |
| 3571 | res = -VKI_EMFILE; |
| 3572 | } |
| 3573 | break; |
| 3574 | |
| 3575 | case SYS_BIND: |
| 3576 | /* int bind(int sockfd, struct sockaddr *my_addr, |
| 3577 | int addrlen); */ |
| 3578 | break; |
| 3579 | |
| 3580 | case SYS_LISTEN: |
| 3581 | /* int listen(int s, int backlog); */ |
| 3582 | break; |
| 3583 | |
| 3584 | case SYS_ACCEPT: { |
| 3585 | /* int accept(int s, struct sockaddr *addr, int *addrlen); */ |
| 3586 | if (!fd_allowed(res, "accept", tid)) { |
| 3587 | VG_(close)(res); |
| 3588 | res = -VKI_EMFILE; |
| 3589 | } else { |
| 3590 | Addr addr_p = ((UInt*)arg2)[1]; |
| 3591 | Addr addrlen_p = ((UInt*)arg2)[2]; |
| 3592 | |
| 3593 | if (addr_p != (Addr)NULL) |
| 3594 | buf_and_len_post_check ( tid, res, addr_p, addrlen_p, |
| 3595 | "socketcall.accept(addrlen_out)" ); |
| 3596 | } |
| 3597 | break; |
| 3598 | } |
| 3599 | |
| 3600 | case SYS_SENDTO: |
| 3601 | break; |
| 3602 | |
| 3603 | case SYS_SEND: |
| 3604 | break; |
| 3605 | |
| 3606 | case SYS_RECVFROM: |
| 3607 | { |
| 3608 | Addr buf_p = ((UInt*)arg2)[1]; |
| 3609 | Int len = ((UInt*)arg2)[2]; |
| 3610 | Addr from_p = ((UInt*)arg2)[4]; |
| 3611 | Addr fromlen_p = ((UInt*)arg2)[5]; |
| 3612 | |
| 3613 | if (from_p != (Addr)NULL) |
| 3614 | buf_and_len_post_check ( tid, res, from_p, fromlen_p, |
| 3615 | "socketcall.recvfrom(fromlen_out)" ); |
| 3616 | VG_TRACK( post_mem_write, buf_p, len ); |
| 3617 | } |
| 3618 | break; |
| 3619 | |
| 3620 | case SYS_RECV: |
| 3621 | if (res >= 0 |
| 3622 | && ((UInt*)arg2)[1] != (UInt)NULL) { |
| 3623 | VG_TRACK( post_mem_write, ((UInt*)arg2)[1], /* buf */ |
| 3624 | ((UInt*)arg2)[2] /* len */ ); |
| 3625 | } |
| 3626 | break; |
| 3627 | |
| 3628 | case SYS_CONNECT: |
| 3629 | break; |
| 3630 | |
| 3631 | case SYS_SETSOCKOPT: |
| 3632 | break; |
| 3633 | |
| 3634 | case SYS_GETSOCKOPT: |
| 3635 | { |
| 3636 | Addr optval_p = ((UInt*)arg2)[3]; |
| 3637 | Addr optlen_p = ((UInt*)arg2)[4]; |
| 3638 | |
| 3639 | if (optval_p != (Addr)NULL) |
| 3640 | buf_and_len_post_check ( tid, res, optval_p, optlen_p, |
| 3641 | "socketcall.getsockopt(optlen_out)" ); |
| 3642 | } |
| 3643 | break; |
| 3644 | |
| 3645 | case SYS_GETSOCKNAME: |
| 3646 | { |
| 3647 | Addr name_p = ((UInt*)arg2)[1]; |
| 3648 | Addr namelen_p = ((UInt*)arg2)[2]; |
| 3649 | |
| 3650 | buf_and_len_post_check ( tid, res, name_p, namelen_p, |
| 3651 | "socketcall.getsockname(namelen_out)" ); |
| 3652 | } |
| 3653 | break; |
| 3654 | |
| 3655 | case SYS_GETPEERNAME: |
| 3656 | { |
| 3657 | Addr name_p = ((UInt*)arg2)[1]; |
| 3658 | Addr namelen_p = ((UInt*)arg2)[2]; |
| 3659 | |
| 3660 | buf_and_len_post_check ( tid, res, name_p, namelen_p, |
| 3661 | "socketcall.getpeername(namelen_out)" ); |
| 3662 | } |
| 3663 | break; |
| 3664 | |
| 3665 | case SYS_SHUTDOWN: |
| 3666 | break; |
| 3667 | |
| 3668 | case SYS_SENDMSG: |
| 3669 | break; |
| 3670 | |
| 3671 | case SYS_RECVMSG: |
| 3672 | { |
| 3673 | struct msghdr *msg = (struct msghdr *)((UInt *)arg2)[ 1 ]; |
| 3674 | |
| 3675 | msghdr_foreachfield( tid, msg, post_mem_write_recvmsg ); |
| 3676 | |
| 3677 | break; |
| 3678 | } |
| 3679 | |
| 3680 | default: |
| 3681 | VG_(message)(Vg_DebugMsg,"FATAL: unhandled socketcall 0x%x",arg1); |
| 3682 | VG_(core_panic)("... bye!\n"); |
| 3683 | break; /*NOTREACHED*/ |
| 3684 | } |
| 3685 | } |
| 3686 | |
| 3687 | PRE(stat) |
| 3688 | { |
| 3689 | /* int stat(const char *file_name, struct stat *buf); */ |
| 3690 | MAYBE_PRINTF("stat ( %p, %p )\n",arg1,arg2); |
| 3691 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "stat(file_name)", arg1 ); |
| 3692 | SYSCALL_TRACK( pre_mem_write, tid, "stat(buf)", |
| 3693 | arg2, sizeof(struct stat) ); |
| 3694 | } |
| 3695 | |
| 3696 | POST(stat) |
| 3697 | { |
| 3698 | VG_TRACK( post_mem_write, arg2, sizeof(struct stat) ); |
| 3699 | } |
| 3700 | |
| 3701 | PRE(statfs) |
| 3702 | { |
| 3703 | /* int statfs(const char *path, struct statfs *buf); */ |
| 3704 | MAYBE_PRINTF("statfs ( %p, %p )\n",arg1,arg2); |
| 3705 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "statfs(path)", arg1 ); |
| 3706 | SYSCALL_TRACK( pre_mem_write, tid, "stat(buf)", |
| 3707 | arg2, sizeof(struct statfs) ); |
| 3708 | } |
| 3709 | |
| 3710 | POST(statfs) |
| 3711 | { |
| 3712 | VG_TRACK( post_mem_write, arg2, sizeof(struct statfs) ); |
| 3713 | } |
| 3714 | |
| 3715 | PRE(symlink) |
| 3716 | { |
| 3717 | /* int symlink(const char *oldpath, const char *newpath); */ |
| 3718 | MAYBE_PRINTF("symlink ( %p, %p )\n",arg1,arg2); |
| 3719 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "symlink(oldpath)", arg1 ); |
| 3720 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "symlink(newpath)", arg2 ); |
| 3721 | } |
| 3722 | |
| 3723 | PRE(stat64) |
| 3724 | { |
| 3725 | /* int stat64(const char *file_name, struct stat64 *buf); */ |
| 3726 | MAYBE_PRINTF("stat64 ( %p, %p )\n",arg1,arg2); |
| 3727 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "stat64(file_name)", arg1 ); |
| 3728 | SYSCALL_TRACK( pre_mem_write, tid, "stat64(buf)", |
| 3729 | arg2, sizeof(struct stat64) ); |
| 3730 | } |
| 3731 | |
| 3732 | POST(stat64) |
| 3733 | { |
| 3734 | VG_TRACK( post_mem_write, arg2, sizeof(struct stat64) ); |
| 3735 | } |
| 3736 | |
| 3737 | PRE(fstat64) |
| 3738 | { |
| 3739 | /* int fstat64(int filedes, struct stat64 *buf); */ |
| 3740 | MAYBE_PRINTF("fstat64 ( %d, %p )\n",arg1,arg2); |
| 3741 | SYSCALL_TRACK( pre_mem_write, tid, "fstat64(buf)", |
| 3742 | arg2, sizeof(struct stat64) ); |
| 3743 | } |
| 3744 | |
| 3745 | POST(fstat64) |
| 3746 | { |
| 3747 | VG_TRACK( post_mem_write, arg2, sizeof(struct stat64) ); |
| 3748 | } |
| 3749 | |
| 3750 | PRE(sysinfo) |
| 3751 | { |
| 3752 | /* int sysinfo(struct sysinfo *info); */ |
| 3753 | MAYBE_PRINTF("sysinfo ( %p )\n",arg1); |
| 3754 | SYSCALL_TRACK( pre_mem_write, tid, "sysinfo(info)", |
| 3755 | arg1, sizeof(struct sysinfo) ); |
| 3756 | } |
| 3757 | |
| 3758 | POST(sysinfo) |
| 3759 | { |
| 3760 | VG_TRACK( post_mem_write, arg1, sizeof(struct sysinfo) ); |
| 3761 | } |
| 3762 | |
| 3763 | PRE(time) |
| 3764 | { |
| 3765 | /* time_t time(time_t *t); */ |
| 3766 | MAYBE_PRINTF("time ( %p )\n",arg1); |
| 3767 | if (arg1 != (UInt)NULL) { |
| 3768 | SYSCALL_TRACK( pre_mem_write, tid, "time", arg1, sizeof(time_t) ); |
| 3769 | } |
| 3770 | } |
| 3771 | |
| 3772 | POST(time) |
| 3773 | { |
| 3774 | if (arg1 != (UInt)NULL) { |
| 3775 | VG_TRACK( post_mem_write, arg1, sizeof(time_t) ); |
| 3776 | } |
| 3777 | } |
| 3778 | |
| 3779 | PRE(times) |
| 3780 | { |
| 3781 | /* clock_t times(struct tms *buf); */ |
| 3782 | MAYBE_PRINTF("times ( %p )\n",arg1); |
| 3783 | SYSCALL_TRACK( pre_mem_write, tid, "times(buf)", |
| 3784 | arg1, sizeof(struct tms) ); |
| 3785 | } |
| 3786 | |
| 3787 | POST(times) |
| 3788 | { |
| 3789 | if (arg1 != (UInt)NULL) { |
| 3790 | VG_TRACK( post_mem_write, arg1, sizeof(struct tms) ); |
| 3791 | } |
| 3792 | } |
| 3793 | |
| 3794 | PRE(truncate) |
| 3795 | { |
| 3796 | /* int truncate(const char *path, size_t length); */ |
| 3797 | MAYBE_PRINTF("truncate ( %p, %d )\n", arg1,arg2); |
| 3798 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "truncate(path)", arg1 ); |
| 3799 | } |
| 3800 | |
| 3801 | PRE(umask) |
| 3802 | { |
| 3803 | /* mode_t umask(mode_t mask); */ |
| 3804 | MAYBE_PRINTF("umask ( %d )\n", arg1); |
| 3805 | } |
| 3806 | |
| 3807 | PRE(unlink) |
| 3808 | { |
| 3809 | /* int unlink(const char *pathname) */ |
| 3810 | MAYBE_PRINTF("ulink ( %p )\n",arg1); |
| 3811 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "unlink(pathname)", arg1 ); |
| 3812 | } |
| 3813 | |
| 3814 | PRE(uname) |
| 3815 | { |
| 3816 | /* int uname(struct utsname *buf); */ |
| 3817 | MAYBE_PRINTF("uname ( %p )\n",arg1); |
| 3818 | SYSCALL_TRACK( pre_mem_write, tid, "uname(buf)", |
| 3819 | arg1, sizeof(struct utsname) ); |
| 3820 | } |
| 3821 | |
| 3822 | POST(uname) |
| 3823 | { |
| 3824 | if (arg1 != (UInt)NULL) { |
| 3825 | VG_TRACK( post_mem_write, arg1, sizeof(struct utsname) ); |
| 3826 | } |
| 3827 | } |
| 3828 | |
| 3829 | PRE(utime) |
| 3830 | { |
| 3831 | /* int utime(const char *filename, struct utimbuf *buf); */ |
| 3832 | MAYBE_PRINTF("utime ( %p, %p )\n", arg1,arg2); |
| 3833 | SYSCALL_TRACK( pre_mem_read_asciiz, tid, "utime(filename)", arg1 ); |
| 3834 | if (arg2 != (UInt)NULL) |
| 3835 | SYSCALL_TRACK( pre_mem_read, tid, "utime(buf)", arg2, |
| 3836 | sizeof(struct utimbuf) ); |
| 3837 | } |
| 3838 | |
| 3839 | PRE(waitpid) |
| 3840 | { |
| 3841 | /* pid_t waitpid(pid_t pid, int *status, int options); */ |
| 3842 | |
| 3843 | MAYBE_PRINTF("waitpid ( %d, %p, %d )\n", |
| 3844 | arg1,arg2,arg3); |
| 3845 | if (arg2 != (Addr)NULL) |
| 3846 | SYSCALL_TRACK( pre_mem_write, tid, "waitpid(status)", |
| 3847 | arg2, sizeof(int) ); |
| 3848 | } |
| 3849 | |
| 3850 | POST(waitpid) |
| 3851 | { |
| 3852 | if (arg2 != (Addr)NULL) |
| 3853 | VG_TRACK( post_mem_write, arg2, sizeof(int) ); |
| 3854 | } |
| 3855 | |
| 3856 | PRE(wait4) |
| 3857 | { |
| 3858 | /* pid_t wait4(pid_t pid, int *status, int options, |
| 3859 | struct rusage *rusage) */ |
| 3860 | MAYBE_PRINTF("wait4 ( %d, %p, %d, %p )\n", |
| 3861 | arg1,arg2,arg3,arg4); |
| 3862 | arg3 &= ~(VKI__WCLONE | VKI__WALL); |
| 3863 | |
| 3864 | if (arg2 != (Addr)NULL) |
| 3865 | SYSCALL_TRACK( pre_mem_write, tid, "wait4(status)", |
| 3866 | arg2, sizeof(int) ); |
| 3867 | if (arg4 != (Addr)NULL) |
| 3868 | SYSCALL_TRACK( pre_mem_write, tid, "wait4(rusage)", arg4, |
| 3869 | sizeof(struct rusage) ); |
| 3870 | } |
| 3871 | |
| 3872 | POST(wait4) |
| 3873 | { |
| 3874 | if (arg2 != (Addr)NULL) |
| 3875 | VG_TRACK( post_mem_write, arg2, sizeof(int) ); |
| 3876 | if (arg4 != (Addr)NULL) |
| 3877 | VG_TRACK( post_mem_write, arg4, sizeof(struct rusage) ); |
| 3878 | } |
| 3879 | |
| 3880 | PRE(writev) |
| 3881 | { |
| 3882 | /* int writev(int fd, const struct iovec * vector, size_t count); */ |
| 3883 | Int i; |
| 3884 | struct iovec * vec; |
| 3885 | MAYBE_PRINTF("writev ( %d, %p, %d )\n",arg1,arg2,arg3); |
| 3886 | if (!fd_allowed(arg1, "writev", tid)) { |
| 3887 | res = -VKI_EBADF; |
| 3888 | } else { |
| 3889 | SYSCALL_TRACK( pre_mem_read, tid, "writev(vector)", |
| 3890 | arg2, arg3 * sizeof(struct iovec) ); |
| 3891 | /* ToDo: don't do any of the following if the vector is invalid */ |
| 3892 | vec = (struct iovec *)arg2; |
| 3893 | for (i = 0; i < (Int)arg3; i++) |
| 3894 | SYSCALL_TRACK( pre_mem_read, tid, "writev(vector[...])", |
| 3895 | (UInt)vec[i].iov_base,vec[i].iov_len ); |
| 3896 | } |
| 3897 | } |
| 3898 | |
| 3899 | PRE(prctl) |
| 3900 | { |
| 3901 | /* int prctl(int option, unsigned long arg2, unsigned long arg3, |
| 3902 | unsigned long arg4, unsigned long arg5); */ |
| 3903 | MAYBE_PRINTF( "prctl ( %d, %d, %d, %d, %d )\n", arg1, arg2, arg3, |
| 3904 | arg4, arg5 ); |
| 3905 | } |
| 3906 | |
| 3907 | PRE(adjtimex) |
| 3908 | { |
| 3909 | struct timex *tx = (struct timex *)arg1; |
| 3910 | MAYBE_PRINTF("adjtimex ( %p )\n", arg1); |
| 3911 | |
| 3912 | SYSCALL_TRACK(pre_mem_read, tid, "adjtimex(timex->modes)", arg1, sizeof(tx->modes)); |
| 3913 | |
| 3914 | #define ADJX(bit,field) \ |
| 3915 | if (tx->modes & bit) \ |
| 3916 | SYSCALL_TRACK(pre_mem_read, tid, \ |
| 3917 | "adjtimex(timex->"#field")", \ |
| 3918 | (UInt)&tx->field, sizeof(tx->field)) |
| 3919 | ADJX(ADJ_FREQUENCY, freq); |
| 3920 | ADJX(ADJ_MAXERROR, maxerror); |
| 3921 | ADJX(ADJ_ESTERROR, esterror); |
| 3922 | ADJX(ADJ_STATUS, status); |
| 3923 | ADJX(ADJ_TIMECONST, constant); |
| 3924 | ADJX(ADJ_TICK, tick); |
| 3925 | #undef ADJX |
| 3926 | |
| 3927 | SYSCALL_TRACK(pre_mem_write, tid, "adjtimex(timex)", arg1, sizeof(struct timex)); |
| 3928 | } |
| 3929 | |
| 3930 | POST(adjtimex) |
| 3931 | { |
| 3932 | VG_TRACK(post_mem_write, arg1, sizeof(struct timex)); |
| 3933 | } |
| 3934 | |
| 3935 | #define SIGNAL_SIMULATION 1 |
| 3936 | |
| 3937 | PRE(pause) |
| 3938 | { |
| 3939 | /* int pause(void); */ |
| 3940 | MAYBE_PRINTF("pause ( )\n"); |
| 3941 | } |
| 3942 | |
| 3943 | PRE(rt_sigsuspend) |
| 3944 | { |
| 3945 | /* int sigsuspend(const sigset_t *mask); */ |
| 3946 | MAYBE_PRINTF("sigsuspend ( %p )\n", arg1 ); |
| 3947 | if (arg1 != (Addr)NULL) { |
| 3948 | /* above NULL test is paranoia */ |
| 3949 | SYSCALL_TRACK( pre_mem_read, tid, "sigsuspend(mask)", arg1, |
| 3950 | sizeof(vki_ksigset_t) ); |
| 3951 | } |
| 3952 | } |
| 3953 | |
| 3954 | PREALIAS(sigsuspend, rt_sigsuspend); |
| 3955 | |
| 3956 | PRE(rt_sigtimedwait) |
| 3957 | { |
| 3958 | /* int sigtimedwait(const sigset_t *set, siginfo_t *info, |
| 3959 | const struct timespec timeout); */ |
nethercote | 9e7e755 | 2003-11-01 14:03:37 +0000 | [diff] [blame] | 3960 | MAYBE_PRINTF("sigtimedwait ( %p, %p, timeout )\n", arg1, arg2); |
| 3961 | if (arg1 != (UInt)NULL) |
| 3962 | SYSCALL_TRACK( pre_mem_read, tid, "sigtimedwait(set)", arg1, |
| 3963 | sizeof(vki_ksigset_t)); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 3964 | if (arg2 != (UInt)NULL) |
| 3965 | SYSCALL_TRACK( pre_mem_write, tid, "sigtimedwait(info)", arg2, |
| 3966 | sizeof(siginfo_t) ); |
| 3967 | } |
| 3968 | |
| 3969 | POST(rt_sigtimedwait) |
| 3970 | { |
| 3971 | if (arg2 != (UInt)NULL) |
| 3972 | VG_TRACK( post_mem_write, arg2, sizeof(siginfo_t) ); |
| 3973 | } |
| 3974 | |
| 3975 | PRE(rt_sigqueueinfo) |
| 3976 | { |
| 3977 | /* long sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo) */ |
| 3978 | MAYBE_PRINTF("rt_sigqueueinfo(%d, %d, %p)\n", arg1, arg2, arg3); |
| 3979 | if (arg2 != (UInt)NULL) |
| 3980 | SYSCALL_TRACK( pre_mem_read, tid, "sigqueueinfo(uinfo)", arg3, |
| 3981 | sizeof(siginfo_t) ); |
| 3982 | } |
| 3983 | |
| 3984 | POST(rt_sigqueueinfo) |
| 3985 | { |
| 3986 | if (res >= 0 && |
| 3987 | arg2 != 0 && |
| 3988 | !VG_(is_sig_ign)(arg2) && |
| 3989 | !VG_(ksigismember)(&tst->eff_sig_mask, arg2) && |
| 3990 | arg1 == VG_(getpid)()) { |
| 3991 | VG_(proxy_waitsig)(); |
| 3992 | } |
| 3993 | } |
| 3994 | |
| 3995 | PRE(sigaltstack) |
| 3996 | { |
| 3997 | /* int sigaltstack(const stack_t *ss, stack_t *oss); */ |
| 3998 | MAYBE_PRINTF("sigaltstack ( %p, %p )\n",arg1,arg2); |
| 3999 | if (arg1 != (UInt)NULL) { |
| 4000 | SYSCALL_TRACK( pre_mem_read, tid, "sigaltstack(ss)", |
| 4001 | arg1, sizeof(vki_kstack_t) ); |
| 4002 | } |
| 4003 | if (arg2 != (UInt)NULL) { |
| 4004 | SYSCALL_TRACK( pre_mem_write, tid, "sigaltstack(oss)", |
| 4005 | arg2, sizeof(vki_kstack_t) ); |
| 4006 | } |
| 4007 | |
| 4008 | if (SIGNAL_SIMULATION) |
| 4009 | VG_(do__NR_sigaltstack) (tid); |
| 4010 | } |
| 4011 | |
| 4012 | POST(sigaltstack) |
| 4013 | { |
| 4014 | if (res == 0 && arg2 != (UInt)NULL) |
| 4015 | VG_TRACK( post_mem_write, arg2, sizeof(vki_kstack_t)); |
| 4016 | } |
| 4017 | |
| 4018 | PRE(sigaction) |
| 4019 | { |
| 4020 | /* int sigaction(int signum, struct k_sigaction *act, |
| 4021 | struct k_sigaction *oldact); */ |
| 4022 | MAYBE_PRINTF("sigaction ( %d, %p, %p )\n",arg1,arg2,arg3); |
| 4023 | if (arg2 != (UInt)NULL) |
| 4024 | SYSCALL_TRACK( pre_mem_read, tid, "sigaction(act)", |
| 4025 | arg2, sizeof(vki_ksigaction)); |
| 4026 | if (arg3 != (UInt)NULL) |
| 4027 | SYSCALL_TRACK( pre_mem_write, tid, "sigaction(oldact)", |
| 4028 | arg3, sizeof(vki_ksigaction)); |
| 4029 | |
| 4030 | if (SIGNAL_SIMULATION) |
| 4031 | VG_(do__NR_sigaction)(tid); |
| 4032 | } |
| 4033 | |
| 4034 | POST(sigaction) |
| 4035 | { |
| 4036 | if (res == 0 && arg3 != (UInt)NULL) |
| 4037 | VG_TRACK( post_mem_write, arg3, sizeof(vki_ksigaction)); |
| 4038 | } |
| 4039 | |
| 4040 | PREALIAS(rt_sigaction, sigaction); |
| 4041 | POSTALIAS(rt_sigaction, sigaction); |
| 4042 | |
| 4043 | PRE(sigprocmask) |
| 4044 | { |
| 4045 | /* int sigprocmask(int how, k_sigset_t *set, |
| 4046 | k_sigset_t *oldset); */ |
| 4047 | MAYBE_PRINTF("sigprocmask ( %d, %p, %p )\n",arg1,arg2,arg3); |
| 4048 | if (arg2 != (UInt)NULL) |
| 4049 | SYSCALL_TRACK( pre_mem_read, tid, "sigprocmask(set)", |
| 4050 | arg2, sizeof(vki_ksigset_t)); |
| 4051 | if (arg3 != (UInt)NULL) |
| 4052 | SYSCALL_TRACK( pre_mem_write, tid, "sigprocmask(oldset)", |
| 4053 | arg3, sizeof(vki_ksigset_t)); |
| 4054 | |
| 4055 | if (SIGNAL_SIMULATION) |
| 4056 | VG_(do__NR_sigprocmask) ( tid, |
| 4057 | arg1 /*how*/, |
| 4058 | (vki_ksigset_t*) arg2, |
| 4059 | (vki_ksigset_t*) arg3 ); |
| 4060 | } |
| 4061 | |
| 4062 | POST(sigprocmask) |
| 4063 | { |
| 4064 | if (res == 0 && arg3 != (UInt)NULL) |
| 4065 | VG_TRACK( post_mem_write, arg3, sizeof(vki_ksigset_t)); |
| 4066 | } |
| 4067 | |
| 4068 | PREALIAS(rt_sigprocmask, sigprocmask); |
| 4069 | POSTALIAS(rt_sigprocmask, sigprocmask); |
| 4070 | |
| 4071 | PRE(sigpending) |
| 4072 | { |
| 4073 | /* int sigpending( sigset_t *set ) ; */ |
| 4074 | MAYBE_PRINTF( "sigpending ( %p )\n", arg1 ); |
| 4075 | SYSCALL_TRACK( pre_mem_write, tid, "sigpending(set)", |
| 4076 | arg1, sizeof(vki_ksigset_t)); |
| 4077 | } |
| 4078 | |
| 4079 | POST(sigpending) |
| 4080 | { |
| 4081 | if ( !VG_( is_kerror )( res ) && res == 0 ) |
| 4082 | VG_TRACK( post_mem_write, arg1, sizeof( vki_ksigset_t ) ) ; |
| 4083 | } |
| 4084 | |
| 4085 | PREALIAS(rt_sigpending, sigpending); |
| 4086 | POSTALIAS(rt_sigpending, sigpending); |
| 4087 | |
| 4088 | |
| 4089 | #undef SYSNO |
| 4090 | #undef res |
| 4091 | #undef arg1 |
| 4092 | #undef arg2 |
| 4093 | #undef arg3 |
| 4094 | #undef arg4 |
| 4095 | #undef arg5 |
| 4096 | #undef arg6 |
| 4097 | |
| 4098 | struct sys_info { |
| 4099 | Bool may_block; /* is a potentially blocking syscall */ |
| 4100 | void (*before)(ThreadId tid, ThreadState *tst); |
| 4101 | void (*after)(ThreadId tid, ThreadState *tst); |
| 4102 | }; |
| 4103 | #define SYSB_(name, blk) [__NR_##name] = { blk, before_##name, NULL } |
| 4104 | #define SYSBA(name, blk) [__NR_##name] = { blk, before_##name, after_##name } |
| 4105 | |
| 4106 | static void bad_before(ThreadId tid, ThreadState *tst) |
| 4107 | { |
| 4108 | VG_(message) |
| 4109 | (Vg_DebugMsg,"WARNING: unhandled syscall: %d", tst->m_eax); |
| 4110 | VG_(message) |
| 4111 | (Vg_DebugMsg,"Do not panic. You may be able to fix this easily."); |
| 4112 | VG_(message) |
| 4113 | (Vg_DebugMsg,"Read the file README_MISSING_SYSCALL_OR_IOCTL."); |
| 4114 | |
| 4115 | tst->m_eax = -VKI_ENOSYS; |
| 4116 | } |
| 4117 | |
| 4118 | static void bad_after(ThreadId tid, ThreadState *tst) |
| 4119 | { |
| 4120 | } |
| 4121 | |
| 4122 | static const struct sys_info bad_sys = { False, bad_before, bad_after }; |
| 4123 | |
| 4124 | static const struct sys_info special_sys[] = { |
| 4125 | /* special */ |
| 4126 | SYSB_(exit_group, False), |
| 4127 | SYSB_(exit, False), |
| 4128 | SYSB_(clone, False), |
| 4129 | |
| 4130 | SYSB_(modify_ldt, False), |
| 4131 | |
fitzhardinge | e1c06d8 | 2003-10-30 07:21:44 +0000 | [diff] [blame] | 4132 | SYSB_(execve, False), |
| 4133 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4134 | #if SIGNAL_SIMULATION |
| 4135 | SYSBA(sigaltstack, False), |
| 4136 | SYSBA(rt_sigaction, False), |
| 4137 | SYSBA(sigaction, False), |
| 4138 | SYSBA(rt_sigprocmask, False), |
| 4139 | SYSBA(sigprocmask, False), |
| 4140 | #endif /* SIGNAL_SIMULATION */ |
| 4141 | }; |
| 4142 | #define MAX_SPECIAL_SYS (sizeof(special_sys)/sizeof(special_sys[0])) |
| 4143 | |
| 4144 | static const struct sys_info sys_info[] = { |
| 4145 | SYSBA(ptrace, False), |
| 4146 | SYSB_(mount, True), |
| 4147 | SYSB_(umount, False), |
| 4148 | |
| 4149 | SYSB_(setresgid, False), |
| 4150 | SYSB_(vhangup, False), |
| 4151 | SYSB_(iopl, False), |
| 4152 | |
| 4153 | SYSB_(setxattr, True), |
| 4154 | SYSB_(lsetxattr, True), |
| 4155 | SYSB_(fsetxattr, True), |
| 4156 | SYSBA(getxattr, True), |
| 4157 | SYSBA(lgetxattr, True), |
| 4158 | SYSBA(fgetxattr, True), |
| 4159 | SYSBA(listxattr, True), |
| 4160 | SYSBA(llistxattr, True), |
| 4161 | SYSBA(flistxattr, True), |
| 4162 | SYSB_(removexattr, True), |
| 4163 | SYSB_(lremovexattr, True), |
| 4164 | SYSB_(fremovexattr, True), |
| 4165 | |
| 4166 | SYSB_(quotactl, False), |
| 4167 | SYSBA(lookup_dcookie, False), |
| 4168 | |
| 4169 | SYSB_(truncate64, True), |
| 4170 | SYSB_(fdatasync, True), |
| 4171 | SYSB_(msync, True), |
| 4172 | |
| 4173 | SYSBA(getpmsg, True), |
| 4174 | SYSB_(putpmsg, True), |
| 4175 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4176 | SYSBA(syslog, True), |
| 4177 | SYSB_(personality, False), |
| 4178 | SYSB_(chroot, False), |
| 4179 | SYSB_(madvise, True), |
| 4180 | SYSBA(mremap, False), |
| 4181 | SYSB_(nice, False), |
| 4182 | SYSB_(setresgid32, False), |
| 4183 | SYSB_(setfsuid32, False), |
| 4184 | SYSBA(_sysctl, False), |
| 4185 | |
| 4186 | SYSB_(sched_getscheduler, False), /* ??? */ |
| 4187 | SYSB_(sched_setscheduler, False), /* ??? */ |
| 4188 | |
| 4189 | SYSB_(mlock, True), |
| 4190 | SYSB_(munlock, True), |
| 4191 | SYSB_(mlockall, True), |
| 4192 | SYSB_(munlockall, True), |
| 4193 | |
| 4194 | SYSB_(sched_get_priority_max, False), /* ??? */ |
| 4195 | SYSB_(sched_get_priority_min, False), /* ??? */ |
| 4196 | |
| 4197 | SYSB_(setpriority, False), |
| 4198 | SYSB_(getpriority, False), |
| 4199 | |
| 4200 | SYSB_(setfsgid, False), |
| 4201 | SYSB_(setregid, False), |
| 4202 | SYSB_(setresuid, False), |
| 4203 | SYSB_(setfsuid, False), |
| 4204 | |
| 4205 | SYSBA(sendfile, True), |
| 4206 | SYSBA(sendfile64, True), |
| 4207 | SYSB_(pwrite64, True), |
| 4208 | SYSB_(sync, True), |
| 4209 | SYSBA(fstatfs, False), |
| 4210 | SYSB_(getsid, False), |
| 4211 | SYSBA(pread64, True), |
| 4212 | SYSB_(mknod, False), |
| 4213 | SYSB_(flock, True), |
| 4214 | SYSB_(init_module, True), |
| 4215 | SYSB_(ioperm, False), |
| 4216 | SYSBA(capget, False), |
| 4217 | SYSB_(capset, False), |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4218 | SYSB_(access, False), |
| 4219 | SYSBA(brk, False), |
| 4220 | SYSB_(chdir, False), |
| 4221 | SYSB_(chmod, False), |
| 4222 | SYSB_(chown32, False), |
| 4223 | SYSB_(lchown32, False), |
| 4224 | SYSB_(chown, False), |
| 4225 | SYSB_(close, False), |
| 4226 | SYSBA(dup, False), |
| 4227 | SYSBA(dup2, False), |
| 4228 | SYSB_(fcntl, True), |
| 4229 | SYSB_(fchdir, False), |
| 4230 | SYSB_(fchown32, False), |
| 4231 | SYSB_(fchown, False), |
| 4232 | SYSB_(fchmod, False), |
| 4233 | SYSB_(fcntl64, True), |
| 4234 | SYSBA(fstat, False), |
| 4235 | SYSBA(fork, False), |
| 4236 | SYSB_(fsync, True), |
| 4237 | SYSB_(ftruncate, True), |
| 4238 | SYSB_(ftruncate64, True), |
| 4239 | SYSBA(getdents, True), |
| 4240 | SYSBA(getdents64, True), |
| 4241 | SYSBA(getgroups32, True), |
| 4242 | SYSBA(getgroups, False), |
| 4243 | SYSBA(getcwd, False), |
| 4244 | SYSB_(geteuid, False), |
| 4245 | SYSB_(geteuid32, False), |
| 4246 | SYSB_(getegid, False), |
| 4247 | SYSB_(getegid32, False), |
| 4248 | SYSB_(getgid, False), |
| 4249 | SYSB_(getgid32, False), |
| 4250 | SYSB_(getpid, False), |
| 4251 | SYSB_(getpgid, False), |
| 4252 | SYSB_(getpgrp, False), |
| 4253 | SYSB_(getppid, False), |
| 4254 | SYSBA(getresgid, False), |
| 4255 | SYSBA(getresgid32, False), |
| 4256 | SYSBA(getresuid, False), |
| 4257 | SYSBA(getresuid32, False), |
| 4258 | SYSBA(ugetrlimit, False), |
| 4259 | SYSBA(getrlimit, False), |
| 4260 | SYSBA(getrusage, False), |
| 4261 | SYSBA(gettimeofday, False), |
| 4262 | SYSB_(getuid, False), |
| 4263 | SYSB_(getuid32, False), |
| 4264 | SYSBA(ipc, True), |
| 4265 | SYSBA(ioctl, True), |
| 4266 | SYSBA(kill, False), |
| 4267 | SYSB_(link, True), |
| 4268 | SYSB_(lseek, False), |
| 4269 | SYSBA(_llseek, False), |
| 4270 | SYSBA(lstat, False), |
| 4271 | SYSBA(lstat64, False), |
| 4272 | SYSB_(mkdir, True), |
| 4273 | SYSBA(mmap2, False), |
| 4274 | SYSBA(mmap, False), |
| 4275 | SYSBA(mprotect, False), |
| 4276 | SYSBA(munmap, False), |
| 4277 | SYSBA(nanosleep, True), |
| 4278 | SYSB_(_newselect, True), |
| 4279 | SYSBA(open, True), |
| 4280 | SYSBA(read, True), |
| 4281 | SYSB_(write, True), |
| 4282 | SYSBA(creat, True), |
| 4283 | SYSBA(pipe, False), |
| 4284 | SYSBA(poll, True), |
| 4285 | SYSBA(readlink, False), |
| 4286 | SYSBA(readv, True), |
| 4287 | SYSB_(rename, False), |
| 4288 | SYSB_(rmdir, True), |
| 4289 | SYSBA(sched_setparam, False), /* ??? */ |
| 4290 | SYSBA(sched_getparam, False), /* ??? */ |
| 4291 | SYSB_(sched_yield, False), /* ??? */ |
| 4292 | SYSB_(select, True), |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4293 | SYSB_(setfsgid32, False), |
| 4294 | SYSB_(setgid32, False), |
| 4295 | SYSB_(setgid, False), |
| 4296 | SYSB_(setsid, False), |
| 4297 | SYSB_(setgroups32, False), |
| 4298 | SYSB_(setgroups, False), |
| 4299 | SYSBA(setpgid, False), |
| 4300 | SYSB_(setregid32, False), |
| 4301 | SYSB_(setresuid32, False), |
| 4302 | SYSB_(setreuid32, False), |
| 4303 | SYSB_(setreuid, False), |
| 4304 | SYSB_(setrlimit, False), |
| 4305 | SYSB_(setuid32, False), |
| 4306 | SYSB_(setuid, False), |
| 4307 | SYSBA(socketcall, True), |
| 4308 | SYSBA(stat, False), |
| 4309 | SYSBA(statfs, False), |
| 4310 | SYSB_(symlink, True), |
| 4311 | SYSBA(stat64, False), |
| 4312 | SYSBA(fstat64, False), |
| 4313 | SYSBA(sysinfo, False), |
| 4314 | SYSBA(time, False), |
| 4315 | SYSBA(times, False), |
| 4316 | SYSB_(truncate, True), |
| 4317 | SYSB_(umask, False), |
| 4318 | SYSB_(unlink, True), |
| 4319 | SYSBA(uname, False), |
| 4320 | SYSB_(utime, True), |
| 4321 | SYSBA(waitpid, True), |
| 4322 | SYSBA(wait4, True), |
| 4323 | SYSB_(writev, True), |
| 4324 | SYSB_(prctl, True), |
| 4325 | SYSBA(adjtimex, False), |
| 4326 | |
| 4327 | /* new signal handling makes these normal blocking syscalls */ |
| 4328 | SYSB_(pause, True), |
| 4329 | SYSB_(sigsuspend, True), |
| 4330 | SYSB_(rt_sigsuspend, True), |
| 4331 | SYSBA(rt_sigtimedwait, True), |
| 4332 | SYSBA(rt_sigqueueinfo, False), |
fitzhardinge | a09a1b5 | 2003-11-07 23:09:48 +0000 | [diff] [blame^] | 4333 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4334 | SYSBA(sigpending, True), /* not blocking, but must run in LWP context */ |
| 4335 | SYSBA(rt_sigpending, True), /* not blocking, but must run in LWP context */ |
| 4336 | SYSB_(alarm, True), /* not blocking, but must run in LWP context */ |
fitzhardinge | a09a1b5 | 2003-11-07 23:09:48 +0000 | [diff] [blame^] | 4337 | SYSBA(setitimer, True), /* not blocking, but must run in LWP context */ |
| 4338 | SYSBA(getitimer, True), /* not blocking, but must run in LWP context */ |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4339 | |
| 4340 | #if !SIGNAL_SIMULATION |
| 4341 | SYSBA(sigaltstack, False), |
| 4342 | SYSBA(rt_sigaction, False), |
| 4343 | SYSBA(sigaction, False), |
| 4344 | SYSBA(rt_sigprocmask, False), |
| 4345 | SYSBA(sigprocmask, False), |
| 4346 | #endif /* !SIGNAL_SIMULATION */ |
| 4347 | }; |
| 4348 | #define MAX_SYS_INFO (sizeof(sys_info)/sizeof(sys_info[0])) |
| 4349 | |
| 4350 | #undef SYSB_ |
| 4351 | #undef SYSBA |
| 4352 | |
| 4353 | Bool VG_(pre_syscall) ( ThreadId tid ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4354 | { |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 4355 | ThreadState* tst; |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4356 | UInt syscallno; |
| 4357 | const struct sys_info *sys; |
| 4358 | Bool special = False; |
| 4359 | Bool syscall_done = False; /* we actually ran the syscall */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4360 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4361 | VGP_PUSHCC(VgpCoreSysWrap); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4362 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4363 | tst = VG_(get_ThreadState)(tid); |
sewardj | 018f762 | 2002-05-15 21:13:39 +0000 | [diff] [blame] | 4364 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4365 | /* Convert vfork to fork, since we can't handle it otherwise. */ |
| 4366 | if (tst->m_eax == __NR_vfork) |
| 4367 | tst->m_eax = __NR_fork; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4368 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4369 | syscallno = tst->m_eax; |
| 4370 | |
| 4371 | if (tst->syscallno != -1) |
| 4372 | VG_(printf)("tid %d has syscall %d\n", tst->tid, tst->syscallno); |
| 4373 | |
| 4374 | vg_assert(tst->syscallno == -1); /* should be no current syscall */ |
| 4375 | vg_assert(tst->status == VgTs_Runnable); /* should be runnable */ |
| 4376 | |
| 4377 | /* the syscall no is in %eax. For syscalls with <= 6 args, |
| 4378 | args 1 .. 6 to the syscall are in %ebx %ecx %edx %esi %edi %ebp. |
| 4379 | For calls with > 6 args, %ebx points to a lump of memory |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4380 | containing the args. |
| 4381 | |
| 4382 | The result is returned in %eax. If this value >= 0, the call |
| 4383 | succeeded, and this is the return value. If < 0, it failed, and |
| 4384 | the negation of this value is errno. To be more specific, |
| 4385 | if res is in the range -EMEDIUMTYPE (-124) .. -EPERM (-1) |
| 4386 | (kernel 2.4.9 sources, include/asm-i386/errno.h) |
| 4387 | then it indicates an error. Otherwise it doesn't. |
| 4388 | |
| 4389 | Dirk Mueller (mueller@kde.org) says that values -4095 .. -1 |
| 4390 | (inclusive?) indicate error returns. Not sure where the -4095 |
| 4391 | comes from. |
| 4392 | */ |
| 4393 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4394 | /* post_syscall expects us to be "waiting" even if we don't |
| 4395 | block */ |
| 4396 | tst->syscallno = syscallno; |
| 4397 | tst->status = VgTs_WaitSys; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4398 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4399 | if (syscallno < MAX_SPECIAL_SYS && special_sys[syscallno].before != NULL) { |
| 4400 | sys = &special_sys[syscallno]; |
| 4401 | special = True; |
| 4402 | } else if (syscallno < MAX_SYS_INFO && sys_info[syscallno].before != NULL) { |
| 4403 | sys = &sys_info[syscallno]; |
| 4404 | } else { |
| 4405 | sys = &bad_sys; |
| 4406 | special = True; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4407 | } |
| 4408 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4409 | /* Do any pre-syscall actions */ |
| 4410 | if (VG_(needs).syscall_wrapper) { |
| 4411 | VGP_PUSHCC(VgpSkinSysWrap); |
| 4412 | tst->sys_pre_res = SK_(pre_syscall)(tid, syscallno, /*isBlocking*/sys->may_block); |
| 4413 | VGP_POPCC(VgpSkinSysWrap); |
| 4414 | } |
| 4415 | |
| 4416 | MAYBE_PRINTF("SYSCALL[%d,%d](%3d)%s%s:", |
| 4417 | VG_(getpid)(), tid, syscallno, |
| 4418 | special ? " special" : "", |
| 4419 | sys->may_block ? " blocking" : ""); |
| 4420 | |
| 4421 | if (special) { |
| 4422 | /* "Special" syscalls are implemented by Valgrind internally, |
| 4423 | and do not generate real kernel calls. The expectation, |
| 4424 | therefore, is that the "before" function not only does the |
| 4425 | appropriate tests, but also performs the syscall itself and |
| 4426 | sets the result. Special syscalls cannot block. */ |
| 4427 | vg_assert(sys->may_block == False); |
| 4428 | |
| 4429 | (sys->before)(tst->tid, tst); |
| 4430 | |
| 4431 | syscall_done = True; |
| 4432 | } else { |
| 4433 | (sys->before)(tst->tid, tst); |
| 4434 | |
| 4435 | if ((Int)tst->m_eax <= 0) { |
| 4436 | /* "before" decided the syscall wasn't viable, so don't do |
| 4437 | anything - just pretend the syscall happened. */ |
| 4438 | syscall_done = True; |
| 4439 | } else if (sys->may_block) { |
| 4440 | /* issue to worker */ |
| 4441 | VG_(sys_issue)(tid); |
| 4442 | } else { |
| 4443 | /* run the syscall directly */ |
| 4444 | tst->m_eax = VG_(do_syscall)(syscallno, |
| 4445 | tst->m_ebx, |
| 4446 | tst->m_ecx, |
| 4447 | tst->m_edx, |
| 4448 | tst->m_esi, |
| 4449 | tst->m_edi, |
| 4450 | tst->m_ebp); |
| 4451 | syscall_done = True; |
| 4452 | } |
| 4453 | } |
| 4454 | |
| 4455 | VGP_POPCC(VgpCoreSysWrap); |
| 4456 | |
| 4457 | return syscall_done; |
| 4458 | } |
| 4459 | |
| 4460 | |
| 4461 | void VG_(post_syscall) ( ThreadId tid ) |
| 4462 | { |
| 4463 | ThreadState* tst; |
| 4464 | UInt syscallno; |
| 4465 | const struct sys_info *sys; |
| 4466 | Bool special = False; |
| 4467 | void *pre_res; |
| 4468 | |
| 4469 | VGP_PUSHCC(VgpCoreSysWrap); |
| 4470 | |
| 4471 | tst = VG_(get_ThreadState)(tid); |
| 4472 | |
| 4473 | /* Tell the skin about the syscall return value */ |
| 4474 | SET_SYSCALL_RETVAL(tst->tid, tst->m_eax); |
| 4475 | |
| 4476 | syscallno = tst->syscallno; |
| 4477 | pre_res = tst->sys_pre_res; |
| 4478 | |
| 4479 | vg_assert(syscallno != -1); /* must be a current syscall */ |
| 4480 | vg_assert(tst->status == VgTs_WaitSys); /* should be blocked waiting */ |
| 4481 | |
| 4482 | if (syscallno < MAX_SPECIAL_SYS && special_sys[syscallno].before != NULL) { |
| 4483 | sys = &special_sys[syscallno]; |
| 4484 | special = True; |
| 4485 | } else if (syscallno < MAX_SYS_INFO && sys_info[syscallno].before != NULL) { |
| 4486 | sys = &sys_info[syscallno]; |
| 4487 | } else { |
| 4488 | sys = &bad_sys; |
| 4489 | special = True; |
| 4490 | } |
| 4491 | |
| 4492 | if (!VG_(is_kerror)(tst->m_eax) && sys->after != NULL) |
| 4493 | (sys->after)(tst->tid, tst); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4494 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4495 | /* Do any post-syscall actions */ |
| 4496 | if (VG_(needs).syscall_wrapper) { |
| 4497 | VGP_PUSHCC(VgpSkinSysWrap); |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4498 | SK_(post_syscall)(tid, syscallno, pre_res, tst->m_eax, /*isBlocking*/True); // did block |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4499 | VGP_POPCC(VgpSkinSysWrap); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4500 | } |
| 4501 | |
fitzhardinge | e1c06d8 | 2003-10-30 07:21:44 +0000 | [diff] [blame] | 4502 | if (tst->m_eax == -VKI_ERESTARTSYS) { |
| 4503 | /* Applications never expect to see this, so we should actually |
| 4504 | restart the syscall (it means the signal happened before the |
| 4505 | syscall made any progress, so we can safely restart it and |
| 4506 | pretend the signal happened before the syscall even |
| 4507 | started) */ |
| 4508 | VG_(restart_syscall)(tid); |
| 4509 | } |
| 4510 | |
jsgf | 855d93d | 2003-10-13 22:26:55 +0000 | [diff] [blame] | 4511 | tst->status = VgTs_Runnable; /* runnable again */ |
| 4512 | tst->syscallno = -1; |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 4513 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4514 | VGP_POPCC(VgpCoreSysWrap); |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 4515 | } |
| 4516 | |
fitzhardinge | e1c06d8 | 2003-10-30 07:21:44 +0000 | [diff] [blame] | 4517 | void VG_(restart_syscall)(ThreadId tid) |
| 4518 | { |
| 4519 | ThreadState* tst; |
| 4520 | tst = VG_(get_ThreadState)(tid); |
| 4521 | |
| 4522 | vg_assert(tst != NULL); |
| 4523 | vg_assert(tst->status == VgTs_WaitSys); |
| 4524 | vg_assert(tst->syscallno != -1); |
| 4525 | |
| 4526 | tst->m_eax = tst->syscallno; |
| 4527 | tst->m_eip -= 2; /* sizeof(int $0x80) */ |
fitzhardinge | a09a1b5 | 2003-11-07 23:09:48 +0000 | [diff] [blame^] | 4528 | |
| 4529 | /* Make sure our caller is actually sane, and we're really backing |
| 4530 | back over a syscall. |
| 4531 | |
| 4532 | int $0x80 == CD 80 |
| 4533 | */ |
| 4534 | { |
| 4535 | UChar *p = (UChar *)tst->m_eip; |
| 4536 | |
| 4537 | if (p[0] != 0xcd || p[1] != 0x80) |
| 4538 | VG_(message)(Vg_DebugMsg, |
| 4539 | "?! restarting over syscall at %p %02x %02x\n", |
| 4540 | tst->m_eip, p[0], p[1]); |
| 4541 | |
| 4542 | vg_assert(p[0] == 0xcd && p[1] == 0x80); |
| 4543 | } |
fitzhardinge | e1c06d8 | 2003-10-30 07:21:44 +0000 | [diff] [blame] | 4544 | } |
sewardj | 2e93c50 | 2002-04-12 11:12:52 +0000 | [diff] [blame] | 4545 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4546 | /*--------------------------------------------------------------------*/ |
njn | 87ef6a6 | 2003-08-14 15:23:55 +0000 | [diff] [blame] | 4547 | /*--- end vg_syscalls.c ---*/ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 4548 | /*--------------------------------------------------------------------*/ |
njn | b94b81e | 2003-09-09 11:27:59 +0000 | [diff] [blame] | 4549 | |