florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1 | /* -*- mode: C; c-basic-offset: 3; -*- */ |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 2 | |
| 3 | /*--------------------------------------------------------------------*/ |
| 4 | /*--- File- and socket-related libc stuff. m_libcfile.c ---*/ |
| 5 | /*--------------------------------------------------------------------*/ |
| 6 | |
| 7 | /* |
| 8 | This file is part of Valgrind, a dynamic binary instrumentation |
| 9 | framework. |
| 10 | |
sewardj | b3a1e4b | 2015-08-21 11:32:26 +0000 | [diff] [blame] | 11 | Copyright (C) 2000-2015 Julian Seward |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 12 | jseward@acm.org |
| 13 | |
| 14 | This program is free software; you can redistribute it and/or |
| 15 | modify it under the terms of the GNU General Public License as |
| 16 | published by the Free Software Foundation; either version 2 of the |
| 17 | License, or (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, but |
| 20 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 22 | General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 27 | 02111-1307, USA. |
| 28 | |
| 29 | The GNU General Public License is contained in the file COPYING. |
| 30 | */ |
| 31 | |
njn | c7561b9 | 2005-06-19 01:24:32 +0000 | [diff] [blame] | 32 | #include "pub_core_basics.h" |
sewardj | 4cfea4f | 2006-10-14 19:26:10 +0000 | [diff] [blame] | 33 | #include "pub_core_vki.h" |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 34 | #include "pub_core_vkiscnums.h" |
sewardj | 26b8728 | 2006-10-17 12:49:31 +0000 | [diff] [blame] | 35 | #include "pub_core_debuglog.h" |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 36 | #include "pub_core_libcbase.h" |
| 37 | #include "pub_core_libcassert.h" |
| 38 | #include "pub_core_libcfile.h" |
sewardj | fdf91b4 | 2005-09-28 00:53:09 +0000 | [diff] [blame] | 39 | #include "pub_core_libcprint.h" // VG_(sprintf) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 40 | #include "pub_core_libcproc.h" // VG_(getpid), VG_(getppid) |
sewardj | fdf91b4 | 2005-09-28 00:53:09 +0000 | [diff] [blame] | 41 | #include "pub_core_clientstate.h" // VG_(fd_hard_limit) |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 42 | #include "pub_core_mallocfree.h" // VG_(realloc) |
njn | 9abd608 | 2005-06-17 21:31:45 +0000 | [diff] [blame] | 43 | #include "pub_core_syscall.h" |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 44 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 45 | /* IMPORTANT: on Darwin it is essential to use the _nocancel versions |
| 46 | of syscalls rather than the vanilla version, if a _nocancel version |
| 47 | is available. See docs/internals/Darwin-notes.txt for the reason |
| 48 | why. */ |
| 49 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 50 | /* --------------------------------------------------------------------- |
| 51 | File stuff |
| 52 | ------------------------------------------------------------------ */ |
| 53 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 54 | /* Move an fd into the Valgrind-safe range */ |
| 55 | Int VG_(safe_fd)(Int oldfd) |
| 56 | { |
| 57 | Int newfd; |
| 58 | |
| 59 | vg_assert(VG_(fd_hard_limit) != -1); |
| 60 | |
| 61 | newfd = VG_(fcntl)(oldfd, VKI_F_DUPFD, VG_(fd_hard_limit)); |
| 62 | if (newfd != -1) |
| 63 | VG_(close)(oldfd); |
| 64 | |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 65 | /* Set the close-on-exec flag for this fd. */ |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 66 | VG_(fcntl)(newfd, VKI_F_SETFD, VKI_FD_CLOEXEC); |
| 67 | |
| 68 | vg_assert(newfd >= VG_(fd_hard_limit)); |
| 69 | return newfd; |
| 70 | } |
| 71 | |
njn | ae7359b | 2005-06-19 21:10:42 +0000 | [diff] [blame] | 72 | /* Given a file descriptor, attempt to deduce its filename. To do |
| 73 | this, we use /proc/self/fd/<FD>. If this doesn't point to a file, |
florian | a175ffb | 2014-10-14 21:01:33 +0000 | [diff] [blame] | 74 | or if it doesn't exist, we return False. |
| 75 | Upon successful completion *result contains the filename. The |
| 76 | filename will be overwritten with the next invocation so callers |
| 77 | need to copy the filename if needed. *result is NULL if the filename |
| 78 | cannot be deduced. */ |
florian | 3130eab | 2014-11-14 19:25:08 +0000 | [diff] [blame] | 79 | Bool VG_(resolve_filename) ( Int fd, const HChar** result ) |
njn | ae7359b | 2005-06-19 21:10:42 +0000 | [diff] [blame] | 80 | { |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 81 | # if defined(VGO_linux) || defined(VGO_solaris) |
florian | a175ffb | 2014-10-14 21:01:33 +0000 | [diff] [blame] | 82 | static HChar *buf = NULL; |
| 83 | static SizeT bufsiz = 0; |
| 84 | |
| 85 | if (buf == NULL) { // first time |
| 86 | bufsiz = 500; |
| 87 | buf = VG_(malloc)("resolve_filename", bufsiz); |
| 88 | } |
| 89 | |
| 90 | HChar tmp[64]; // large enough |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 91 | { |
| 92 | # if defined(VGO_linux) |
| 93 | VG_(sprintf)(tmp, "/proc/self/fd/%d", fd); |
| 94 | # elif defined(VGO_solaris) |
| 95 | VG_(sprintf)(tmp, "/proc/self/path/%d", fd); |
| 96 | # endif |
| 97 | } |
florian | a175ffb | 2014-10-14 21:01:33 +0000 | [diff] [blame] | 98 | |
| 99 | while (42) { |
| 100 | SSizeT res = VG_(readlink)(tmp, buf, bufsiz); |
| 101 | if (res < 0) break; |
| 102 | if (res == bufsiz) { // buffer too small; increase and retry |
| 103 | bufsiz += 500; |
| 104 | buf = VG_(realloc)("resolve_filename", buf, bufsiz); |
| 105 | continue; |
| 106 | } |
| 107 | vg_assert(bufsiz > res); // paranoia |
| 108 | if (buf[0] != '/') break; |
| 109 | |
| 110 | buf[res] = '\0'; |
| 111 | *result = buf; |
njn | f845f8f | 2005-06-23 02:26:47 +0000 | [diff] [blame] | 112 | return True; |
florian | a175ffb | 2014-10-14 21:01:33 +0000 | [diff] [blame] | 113 | } |
| 114 | // Failure |
| 115 | *result = NULL; |
| 116 | return False; |
njn | dad944a | 2009-05-04 05:55:46 +0000 | [diff] [blame] | 117 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 118 | # elif defined(VGO_darwin) |
| 119 | HChar tmp[VKI_MAXPATHLEN+1]; |
| 120 | if (0 == VG_(fcntl)(fd, VKI_F_GETPATH, (UWord)tmp)) { |
florian | a175ffb | 2014-10-14 21:01:33 +0000 | [diff] [blame] | 121 | static HChar *buf = NULL; |
| 122 | |
| 123 | if (buf == NULL) |
| 124 | buf = VG_(malloc)("resolve_filename", VKI_MAXPATHLEN+1); |
| 125 | VG_(strcpy)( buf, tmp ); |
| 126 | |
| 127 | *result = buf; |
| 128 | if (buf[0] == '/') return True; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 129 | } |
florian | a175ffb | 2014-10-14 21:01:33 +0000 | [diff] [blame] | 130 | // Failure |
| 131 | *result = NULL; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 132 | return False; |
| 133 | |
njn | 81b975c | 2009-04-28 05:35:53 +0000 | [diff] [blame] | 134 | # else |
njn | dad944a | 2009-05-04 05:55:46 +0000 | [diff] [blame] | 135 | # error Unknown OS |
njn | 81b975c | 2009-04-28 05:35:53 +0000 | [diff] [blame] | 136 | # endif |
njn | ae7359b | 2005-06-19 21:10:42 +0000 | [diff] [blame] | 137 | } |
| 138 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 139 | SysRes VG_(mknod) ( const HChar* pathname, Int mode, UWord dev ) |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 140 | { |
| 141 | # if defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
philippe | 0eb0d5a | 2014-02-11 23:50:16 +0000 | [diff] [blame] | 142 | /* ARM64 wants to use __NR_mknodat rather than __NR_mknod. */ |
| 143 | SysRes res = VG_(do_syscall4)(__NR_mknodat, |
| 144 | VKI_AT_FDCWD, (UWord)pathname, mode, dev); |
| 145 | # elif defined(VGO_linux) || defined(VGO_darwin) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 146 | SysRes res = VG_(do_syscall3)(__NR_mknod, |
| 147 | (UWord)pathname, mode, dev); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 148 | # elif defined(VGO_solaris) |
| 149 | SysRes res = VG_(do_syscall4)(__NR_mknodat, |
| 150 | VKI_AT_FDCWD, (UWord)pathname, mode, dev); |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 151 | # else |
| 152 | # error Unknown OS |
| 153 | # endif |
| 154 | return res; |
| 155 | } |
| 156 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 157 | SysRes VG_(open) ( const HChar* pathname, Int flags, Int mode ) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 158 | { |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 159 | # if defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 160 | /* ARM64 wants to use __NR_openat rather than __NR_open. */ |
| 161 | SysRes res = VG_(do_syscall4)(__NR_openat, |
| 162 | VKI_AT_FDCWD, (UWord)pathname, flags, mode); |
| 163 | # elif defined(VGO_linux) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 164 | SysRes res = VG_(do_syscall3)(__NR_open, |
| 165 | (UWord)pathname, flags, mode); |
| 166 | # elif defined(VGO_darwin) |
| 167 | SysRes res = VG_(do_syscall3)(__NR_open_nocancel, |
| 168 | (UWord)pathname, flags, mode); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 169 | # elif defined(VGO_solaris) |
| 170 | SysRes res = VG_(do_syscall4)(__NR_openat, |
| 171 | VKI_AT_FDCWD, (UWord)pathname, flags, mode); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 172 | # else |
| 173 | # error Unknown OS |
| 174 | # endif |
sewardj | 9264559 | 2005-07-23 09:18:34 +0000 | [diff] [blame] | 175 | return res; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 176 | } |
| 177 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 178 | Int VG_(fd_open) (const HChar* pathname, Int flags, Int mode) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 179 | { |
| 180 | SysRes sr; |
| 181 | sr = VG_(open) (pathname, flags, mode); |
| 182 | if (sr_isError (sr)) |
| 183 | return -1; |
| 184 | else |
| 185 | return sr_Res (sr); |
| 186 | } |
| 187 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 188 | void VG_(close) ( Int fd ) |
| 189 | { |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 190 | /* Hmm. Return value is not checked. That's uncool. */ |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 191 | # if defined(VGO_linux) || defined(VGO_solaris) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 192 | (void)VG_(do_syscall1)(__NR_close, fd); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 193 | # elif defined(VGO_darwin) |
| 194 | (void)VG_(do_syscall1)(__NR_close_nocancel, fd); |
| 195 | # else |
| 196 | # error Unknown OS |
| 197 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | Int VG_(read) ( Int fd, void* buf, Int count) |
| 201 | { |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 202 | Int ret; |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 203 | # if defined(VGO_linux) || defined(VGO_solaris) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 204 | SysRes res = VG_(do_syscall3)(__NR_read, fd, (UWord)buf, count); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 205 | # elif defined(VGO_darwin) |
| 206 | SysRes res = VG_(do_syscall3)(__NR_read_nocancel, fd, (UWord)buf, count); |
| 207 | # else |
| 208 | # error Unknown OS |
| 209 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 210 | if (sr_isError(res)) { |
| 211 | ret = - (Int)(Word)sr_Err(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 212 | vg_assert(ret < 0); |
| 213 | } else { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 214 | ret = (Int)(Word)sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 215 | vg_assert(ret >= 0); |
| 216 | } |
| 217 | return ret; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | Int VG_(write) ( Int fd, const void* buf, Int count) |
| 221 | { |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 222 | Int ret; |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 223 | # if defined(VGO_linux) || defined(VGO_solaris) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 224 | SysRes res = VG_(do_syscall3)(__NR_write, fd, (UWord)buf, count); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 225 | # elif defined(VGO_darwin) |
| 226 | SysRes res = VG_(do_syscall3)(__NR_write_nocancel, fd, (UWord)buf, count); |
| 227 | # else |
| 228 | # error "Unknown OS" |
| 229 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 230 | if (sr_isError(res)) { |
| 231 | ret = - (Int)(Word)sr_Err(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 232 | vg_assert(ret < 0); |
| 233 | } else { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 234 | ret = (Int)(Word)sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 235 | vg_assert(ret >= 0); |
| 236 | } |
| 237 | return ret; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 238 | } |
| 239 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 240 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 241 | Int VG_(pipe) ( Int fd[2] ) |
| 242 | { |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 243 | # if defined(VGP_mips32_linux) || defined(VGP_mips64_linux) |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 244 | /* __NR_pipe has a strange return convention on mips32-linux. */ |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 245 | SysRes res = VG_(do_syscall1)(__NR_pipe, (UWord)fd); |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 246 | if (!sr_isError(res)) { |
| 247 | fd[0] = (Int)sr_Res(res); |
| 248 | fd[1] = (Int)sr_ResEx(res); |
| 249 | return 0; |
| 250 | } else { |
| 251 | return -1; |
| 252 | } |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 253 | # elif defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 254 | SysRes res = VG_(do_syscall2)(__NR_pipe2, (UWord)fd, 0); |
| 255 | return sr_isError(res) ? -1 : 0; |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 256 | # elif defined(VGO_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 257 | SysRes res = VG_(do_syscall1)(__NR_pipe, (UWord)fd); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 258 | return sr_isError(res) ? -1 : 0; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 259 | # elif defined(VGO_darwin) |
| 260 | /* __NR_pipe is UX64, so produces a double-word result */ |
| 261 | SysRes res = VG_(do_syscall0)(__NR_pipe); |
| 262 | if (!sr_isError(res)) { |
| 263 | fd[0] = (Int)sr_Res(res); |
| 264 | fd[1] = (Int)sr_ResHI(res); |
| 265 | } |
| 266 | return sr_isError(res) ? -1 : 0; |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 267 | # elif defined(VGO_solaris) |
| 268 | # if defined(SOLARIS_NEW_PIPE_SYSCALL) |
| 269 | SysRes res = VG_(do_syscall2)(__NR_pipe, (UWord)fd, 0); |
| 270 | return sr_isError(res) ? -1 : 0; |
| 271 | # else |
| 272 | SysRes res = VG_(do_syscall0)(__NR_pipe); |
| 273 | if (!sr_isError(res)) { |
| 274 | fd[0] = (Int)sr_Res(res); |
| 275 | fd[1] = (Int)sr_ResHI(res); |
| 276 | } |
| 277 | return sr_isError(res) ? -1 : 0; |
| 278 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 279 | # else |
| 280 | # error "Unknown OS" |
| 281 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 282 | } |
| 283 | |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 284 | Off64T VG_(lseek) ( Int fd, Off64T offset, Int whence ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 285 | { |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 286 | # if defined(VGO_linux) || defined(VGP_amd64_darwin) |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 287 | # if defined(__NR__llseek) |
| 288 | Off64T result; |
| 289 | SysRes res = VG_(do_syscall5)(__NR__llseek, fd, |
| 290 | offset >> 32, offset & 0xffffffff, |
tom | f9b1d73 | 2011-07-13 10:05:24 +0000 | [diff] [blame] | 291 | (UWord)&result, whence); |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 292 | return sr_isError(res) ? (-1) : result; |
| 293 | # else |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 294 | SysRes res = VG_(do_syscall3)(__NR_lseek, fd, offset, whence); |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 295 | vg_assert(sizeof(Off64T) == sizeof(Word)); |
| 296 | return sr_isError(res) ? (-1) : sr_Res(res); |
| 297 | # endif |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 298 | # elif defined(VGP_x86_darwin) |
| 299 | SysRes res = VG_(do_syscall4)(__NR_lseek, fd, |
| 300 | offset & 0xffffffff, offset >> 32, whence); |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 301 | return sr_isError(res) ? (-1) : sr_Res(res); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 302 | # elif defined(VGP_x86_solaris) |
| 303 | SysRes res = VG_(do_syscall4)(__NR_llseek, fd, |
| 304 | offset & 0xffffffff, offset >> 32, whence); |
| 305 | return sr_isError(res) ? (-1) : ((ULong)sr_ResHI(res) << 32 | sr_Res(res)); |
| 306 | # elif defined(VGP_amd64_solaris) |
| 307 | SysRes res = VG_(do_syscall3)(__NR_lseek, fd, offset, whence); |
| 308 | vg_assert(sizeof(Off64T) == sizeof(Word)); |
| 309 | return sr_isError(res) ? (-1) : sr_Res(res); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 310 | # else |
| 311 | # error "Unknown plat" |
| 312 | # endif |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 313 | /* if you change the error-reporting conventions of this, also |
philippe | 8050bb7 | 2012-04-13 23:07:29 +0000 | [diff] [blame] | 314 | change all usage points. */ |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 315 | } |
| 316 | |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 317 | |
| 318 | /* stat/fstat support. It's uggerly. We have impedance-match into a |
| 319 | 'struct vg_stat' in order to have a single structure that callers |
| 320 | can use consistently on all platforms. */ |
| 321 | |
| 322 | #define TRANSLATE_TO_vg_stat(_p_vgstat, _p_vkistat) \ |
| 323 | do { \ |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 324 | (_p_vgstat)->dev = (ULong)( (_p_vkistat)->st_dev ); \ |
| 325 | (_p_vgstat)->ino = (ULong)( (_p_vkistat)->st_ino ); \ |
| 326 | (_p_vgstat)->nlink = (ULong)( (_p_vkistat)->st_nlink ); \ |
| 327 | (_p_vgstat)->mode = (UInt) ( (_p_vkistat)->st_mode ); \ |
| 328 | (_p_vgstat)->uid = (UInt) ( (_p_vkistat)->st_uid ); \ |
| 329 | (_p_vgstat)->gid = (UInt) ( (_p_vkistat)->st_gid ); \ |
| 330 | (_p_vgstat)->rdev = (ULong)( (_p_vkistat)->st_rdev ); \ |
| 331 | (_p_vgstat)->size = (Long) ( (_p_vkistat)->st_size ); \ |
| 332 | (_p_vgstat)->blksize = (ULong)( (_p_vkistat)->st_blksize ); \ |
| 333 | (_p_vgstat)->blocks = (ULong)( (_p_vkistat)->st_blocks ); \ |
| 334 | (_p_vgstat)->atime = (ULong)( (_p_vkistat)->st_atime ); \ |
| 335 | (_p_vgstat)->atime_nsec = (ULong)( (_p_vkistat)->st_atime_nsec ); \ |
| 336 | (_p_vgstat)->mtime = (ULong)( (_p_vkistat)->st_mtime ); \ |
| 337 | (_p_vgstat)->mtime_nsec = (ULong)( (_p_vkistat)->st_mtime_nsec ); \ |
| 338 | (_p_vgstat)->ctime = (ULong)( (_p_vkistat)->st_ctime ); \ |
| 339 | (_p_vgstat)->ctime_nsec = (ULong)( (_p_vkistat)->st_ctime_nsec ); \ |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 340 | } while (0) |
| 341 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 342 | SysRes VG_(stat) ( const HChar* file_name, struct vg_stat* vgbuf ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 343 | { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 344 | SysRes res; |
| 345 | VG_(memset)(vgbuf, 0, sizeof(*vgbuf)); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 346 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 347 | # if defined(VGO_linux) || defined(VGO_darwin) |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 348 | /* First try with stat64. If that doesn't work out, fall back to |
| 349 | the vanilla version. */ |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 350 | # if defined(__NR_stat64) |
| 351 | { struct vki_stat64 buf64; |
| 352 | res = VG_(do_syscall2)(__NR_stat64, (UWord)file_name, (UWord)&buf64); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 353 | if (!(sr_isError(res) && sr_Err(res) == VKI_ENOSYS)) { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 354 | /* Success, or any failure except ENOSYS */ |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 355 | if (!sr_isError(res)) |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 356 | TRANSLATE_TO_vg_stat(vgbuf, &buf64); |
| 357 | return res; |
| 358 | } |
| 359 | } |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 360 | # endif /* defined(__NR_stat64) */ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 361 | /* This is the fallback ("vanilla version"). */ |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 362 | { struct vki_stat buf; |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 363 | # if defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 364 | res = VG_(do_syscall3)(__NR3264_fstatat, VKI_AT_FDCWD, |
| 365 | (UWord)file_name, (UWord)&buf); |
| 366 | # else |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 367 | res = VG_(do_syscall2)(__NR_stat, (UWord)file_name, (UWord)&buf); |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 368 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 369 | if (!sr_isError(res)) |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 370 | TRANSLATE_TO_vg_stat(vgbuf, &buf); |
| 371 | return res; |
| 372 | } |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 373 | # elif defined(VGO_solaris) |
| 374 | { |
| 375 | # if defined(VGP_x86_solaris) |
| 376 | struct vki_stat64 buf64; |
| 377 | res = VG_(do_syscall4)(__NR_fstatat64, VKI_AT_FDCWD, (UWord)file_name, |
| 378 | (UWord)&buf64, 0); |
| 379 | # elif defined(VGP_amd64_solaris) |
| 380 | struct vki_stat buf64; |
| 381 | res = VG_(do_syscall4)(__NR_fstatat, VKI_AT_FDCWD, (UWord)file_name, |
| 382 | (UWord)&buf64, 0); |
| 383 | # else |
| 384 | # error "Unknown platform" |
| 385 | # endif |
| 386 | if (!sr_isError(res)) |
| 387 | TRANSLATE_TO_vg_stat(vgbuf, &buf64); |
| 388 | return res; |
| 389 | } |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 390 | # else |
| 391 | # error Unknown OS |
| 392 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 393 | } |
| 394 | |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 395 | Int VG_(fstat) ( Int fd, struct vg_stat* vgbuf ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 396 | { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 397 | SysRes res; |
| 398 | VG_(memset)(vgbuf, 0, sizeof(*vgbuf)); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 399 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 400 | # if defined(VGO_linux) || defined(VGO_darwin) |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 401 | /* First try with fstat64. If that doesn't work out, fall back to |
| 402 | the vanilla version. */ |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 403 | # if defined(__NR_fstat64) |
| 404 | { struct vki_stat64 buf64; |
| 405 | res = VG_(do_syscall2)(__NR_fstat64, (UWord)fd, (UWord)&buf64); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 406 | if (!(sr_isError(res) && sr_Err(res) == VKI_ENOSYS)) { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 407 | /* Success, or any failure except ENOSYS */ |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 408 | if (!sr_isError(res)) |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 409 | TRANSLATE_TO_vg_stat(vgbuf, &buf64); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 410 | return sr_isError(res) ? (-1) : 0; |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 411 | } |
| 412 | } |
| 413 | # endif /* if defined(__NR_fstat64) */ |
| 414 | { struct vki_stat buf; |
| 415 | res = VG_(do_syscall2)(__NR_fstat, (UWord)fd, (UWord)&buf); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 416 | if (!sr_isError(res)) |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 417 | TRANSLATE_TO_vg_stat(vgbuf, &buf); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 418 | return sr_isError(res) ? (-1) : 0; |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 419 | } |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 420 | # elif defined(VGO_solaris) |
| 421 | { |
| 422 | # if defined(VGP_x86_solaris) |
| 423 | struct vki_stat64 buf64; |
| 424 | res = VG_(do_syscall4)(__NR_fstatat64, (UWord)fd, 0, (UWord)&buf64, 0); |
| 425 | # elif defined(VGP_amd64_solaris) |
| 426 | struct vki_stat buf64; |
| 427 | res = VG_(do_syscall4)(__NR_fstatat, (UWord)fd, 0, (UWord)&buf64, 0); |
| 428 | # else |
| 429 | # error "Unknown platform" |
| 430 | # endif |
| 431 | if (!sr_isError(res)) |
| 432 | TRANSLATE_TO_vg_stat(vgbuf, &buf64); |
| 433 | return sr_isError(res) ? (-1) : 0; |
| 434 | } |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 435 | # else |
| 436 | # error Unknown OS |
| 437 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 438 | } |
| 439 | |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 440 | #undef TRANSLATE_TO_vg_stat |
| 441 | |
| 442 | |
| 443 | Long VG_(fsize) ( Int fd ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 444 | { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 445 | struct vg_stat buf; |
| 446 | Int res = VG_(fstat)( fd, &buf ); |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 447 | return (res == -1) ? (-1LL) : buf.size; |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 448 | } |
| 449 | |
tom | b7c2f9d | 2014-05-22 08:57:06 +0000 | [diff] [blame] | 450 | SysRes VG_(getxattr) ( const HChar* file_name, const HChar* attr_name, Addr attr_value, SizeT attr_value_len ) |
| 451 | { |
| 452 | SysRes res; |
| 453 | #if defined(VGO_linux) |
| 454 | res = VG_(do_syscall4)(__NR_getxattr, (UWord)file_name, (UWord)attr_name, |
| 455 | attr_value, attr_value_len); |
| 456 | #else |
| 457 | res = VG_(mk_SysRes_Error)(VKI_ENOSYS); |
| 458 | #endif |
| 459 | return res; |
| 460 | } |
| 461 | |
njn | 63e5e6e | 2009-05-20 04:22:42 +0000 | [diff] [blame] | 462 | Bool VG_(is_dir) ( const HChar* f ) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 463 | { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 464 | struct vg_stat buf; |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 465 | SysRes res = VG_(stat)(f, &buf); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 466 | return sr_isError(res) ? False |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 467 | : VKI_S_ISDIR(buf.mode) ? True : False; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 468 | } |
| 469 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 470 | SysRes VG_(dup) ( Int oldfd ) |
| 471 | { |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 472 | # if defined(VGO_linux) || defined(VGO_darwin) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 473 | return VG_(do_syscall1)(__NR_dup, oldfd); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 474 | # elif defined(VGO_solaris) |
| 475 | return VG_(do_syscall3)(__NR_fcntl, oldfd, F_DUPFD, 0); |
| 476 | # else |
| 477 | # error Unknown OS |
| 478 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 479 | } |
| 480 | |
njn | fad9837 | 2008-10-12 19:53:28 +0000 | [diff] [blame] | 481 | SysRes VG_(dup2) ( Int oldfd, Int newfd ) |
| 482 | { |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 483 | # if defined(VGO_linux) || defined(VGO_darwin) |
njn | fad9837 | 2008-10-12 19:53:28 +0000 | [diff] [blame] | 484 | return VG_(do_syscall2)(__NR_dup2, oldfd, newfd); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 485 | # elif defined(VGO_solaris) |
| 486 | return VG_(do_syscall3)(__NR_fcntl, oldfd, F_DUP2FD, newfd); |
sewardj | 485ce16 | 2008-10-22 00:57:29 +0000 | [diff] [blame] | 487 | # else |
| 488 | # error Unknown OS |
| 489 | # endif |
njn | fad9837 | 2008-10-12 19:53:28 +0000 | [diff] [blame] | 490 | } |
| 491 | |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 492 | /* Returns -1 on error. */ |
njn | bb7af3f | 2009-05-22 07:08:12 +0000 | [diff] [blame] | 493 | Int VG_(fcntl) ( Int fd, Int cmd, Addr arg ) |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 494 | { |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 495 | # if defined(VGO_linux) || defined(VGO_solaris) |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 496 | SysRes res = VG_(do_syscall3)(__NR_fcntl, fd, cmd, arg); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 497 | # elif defined(VGO_darwin) |
| 498 | SysRes res = VG_(do_syscall3)(__NR_fcntl_nocancel, fd, cmd, arg); |
| 499 | # else |
| 500 | # error "Unknown OS" |
| 501 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 502 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 503 | } |
| 504 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 505 | Int VG_(rename) ( const HChar* old_name, const HChar* new_name ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 506 | { |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 507 | # if defined(VGP_tilegx_linux) |
florian | 4ac3621 | 2015-05-13 21:26:46 +0000 | [diff] [blame] | 508 | SysRes res = VG_(do_syscall3)(__NR_renameat, VKI_AT_FDCWD, |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 509 | (UWord)old_name, (UWord)new_name); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 510 | # elif defined(VGO_linux) || defined(VGO_darwin) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 511 | SysRes res = VG_(do_syscall2)(__NR_rename, (UWord)old_name, (UWord)new_name); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 512 | # elif defined(VGO_solaris) |
| 513 | SysRes res = VG_(do_syscall4)(__NR_renameat, VKI_AT_FDCWD, (UWord)old_name, |
| 514 | VKI_AT_FDCWD, (UWord)new_name); |
| 515 | # else |
| 516 | # error "Unknown OS" |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 517 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 518 | return sr_isError(res) ? (-1) : 0; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 519 | } |
| 520 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 521 | Int VG_(unlink) ( const HChar* file_name ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 522 | { |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 523 | # if defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 524 | SysRes res = VG_(do_syscall2)(__NR_unlinkat, VKI_AT_FDCWD, |
| 525 | (UWord)file_name); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 526 | # elif defined(VGO_linux) || defined(VGO_darwin) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 527 | SysRes res = VG_(do_syscall1)(__NR_unlink, (UWord)file_name); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 528 | # elif defined(VGO_solaris) |
| 529 | SysRes res = VG_(do_syscall3)(__NR_unlinkat, VKI_AT_FDCWD, |
| 530 | (UWord)file_name, 0); |
| 531 | # else |
| 532 | # error "Unknown OS" |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 533 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 534 | return sr_isError(res) ? (-1) : 0; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 535 | } |
| 536 | |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 537 | /* The working directory at startup. |
| 538 | All that is really needed is to note the cwd at process startup. |
| 539 | Hence VG_(record_startup_wd) notes it (in a platform dependent way) |
| 540 | and VG_(get_startup_wd) produces the noted value. */ |
| 541 | static HChar *startup_wd; |
| 542 | static Bool startup_wd_acquired = False; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 543 | |
| 544 | /* Record the process' working directory at startup. Is intended to |
| 545 | be called exactly once, at startup, before the working directory |
| 546 | changes. Return True for success, False for failure, so that the |
| 547 | caller can bomb out suitably without creating module cycles if |
| 548 | there is a problem. */ |
| 549 | Bool VG_(record_startup_wd) ( void ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 550 | { |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 551 | vg_assert(!startup_wd_acquired); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 552 | # if defined(VGO_linux) || defined(VGO_solaris) |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 553 | /* Simple: just ask the kernel */ |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 554 | SysRes res; |
| 555 | SizeT szB = 0; |
| 556 | do { |
| 557 | szB += 500; |
| 558 | startup_wd = VG_(realloc)("startup_wd", startup_wd, szB); |
| 559 | VG_(memset)(startup_wd, 0, szB); |
| 560 | res = VG_(do_syscall2)(__NR_getcwd, (UWord)startup_wd, szB-1); |
| 561 | } while (sr_isError(res)); |
| 562 | |
| 563 | vg_assert(startup_wd[szB-1] == 0); |
| 564 | startup_wd_acquired = True; |
| 565 | return True; |
| 566 | |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 567 | # elif defined(VGO_darwin) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 568 | /* We can't ask the kernel, so instead rely on launcher-*.c to |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 569 | tell us the startup path. Note the env var is keyed to the |
| 570 | parent's PID, not ours, since our parent is the launcher |
| 571 | process. */ |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 572 | { HChar envvar[100]; // large enough |
| 573 | HChar* wd; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 574 | VG_(memset)(envvar, 0, sizeof(envvar)); |
| 575 | VG_(sprintf)(envvar, "VALGRIND_STARTUP_PWD_%d_XYZZY", |
| 576 | (Int)VG_(getppid)()); |
| 577 | wd = VG_(getenv)( envvar ); |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 578 | if (wd == NULL) |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 579 | return False; |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 580 | SizeT need = VG_(strlen)(wd) + 1; |
| 581 | startup_wd = VG_(malloc)("startup_wd", need); |
| 582 | VG_(strcpy)(startup_wd, wd); |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 583 | startup_wd_acquired = True; |
| 584 | return True; |
| 585 | } |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 586 | # else |
| 587 | # error Unknown OS |
| 588 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 589 | } |
| 590 | |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 591 | /* Return the previously acquired startup_wd. */ |
| 592 | const HChar *VG_(get_startup_wd) ( void ) |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 593 | { |
| 594 | vg_assert(startup_wd_acquired); |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 595 | |
| 596 | return startup_wd; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 597 | } |
| 598 | |
philippe | 4254584 | 2013-12-05 22:10:55 +0000 | [diff] [blame] | 599 | SysRes VG_(poll) (struct vki_pollfd *fds, Int nfds, Int timeout) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 600 | { |
| 601 | SysRes res; |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 602 | # if defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
philippe | 0eb0d5a | 2014-02-11 23:50:16 +0000 | [diff] [blame] | 603 | /* ARM64 wants to use __NR_ppoll rather than __NR_poll. */ |
| 604 | struct vki_timespec timeout_ts; |
| 605 | if (timeout >= 0) { |
| 606 | timeout_ts.tv_sec = timeout / 1000; |
| 607 | timeout_ts.tv_nsec = ((long)timeout % 1000) * 1000000; |
| 608 | } |
| 609 | res = VG_(do_syscall4)(__NR_ppoll, |
| 610 | (UWord)fds, nfds, |
| 611 | (UWord)(timeout >= 0 ? &timeout_ts : NULL), |
| 612 | (UWord)NULL); |
| 613 | # elif defined(VGO_linux) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 614 | res = VG_(do_syscall3)(__NR_poll, (UWord)fds, nfds, timeout); |
sewardj | 6caac71 | 2012-08-18 06:45:07 +0000 | [diff] [blame] | 615 | # elif defined(VGO_darwin) |
| 616 | res = VG_(do_syscall3)(__NR_poll_nocancel, (UWord)fds, nfds, timeout); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 617 | # elif defined(VGO_solaris) |
| 618 | struct vki_timespec ts; |
| 619 | struct vki_timespec *tsp; |
| 620 | |
| 621 | if (timeout < 0) |
| 622 | tsp = NULL; |
| 623 | else { |
| 624 | ts.tv_sec = timeout / 1000; |
| 625 | ts.tv_nsec = (timeout % 1000) * 1000000; |
| 626 | tsp = &ts; |
| 627 | } |
| 628 | |
| 629 | res = VG_(do_syscall4)(__NR_pollsys, (UWord)fds, nfds, (UWord)tsp, 0); |
sewardj | 6caac71 | 2012-08-18 06:45:07 +0000 | [diff] [blame] | 630 | # else |
| 631 | # error "Unknown OS" |
| 632 | # endif |
philippe | 4254584 | 2013-12-05 22:10:55 +0000 | [diff] [blame] | 633 | return res; |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 634 | } |
| 635 | |
| 636 | |
florian | a175ffb | 2014-10-14 21:01:33 +0000 | [diff] [blame] | 637 | /* Performs the readlink operation and puts the result into 'buf'. |
| 638 | Note, that the string in 'buf' is *not* null-terminated. The function |
| 639 | returns the number of characters put into 'buf' or -1 if an error |
| 640 | occurred. */ |
| 641 | SSizeT VG_(readlink) (const HChar* path, HChar* buf, SizeT bufsiz) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 642 | { |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 643 | SysRes res; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 644 | /* res = readlink( path, buf, bufsiz ); */ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 645 | # if defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 646 | res = VG_(do_syscall4)(__NR_readlinkat, VKI_AT_FDCWD, |
| 647 | (UWord)path, (UWord)buf, bufsiz); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 648 | # elif defined(VGO_linux) || defined(VGO_darwin) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 649 | res = VG_(do_syscall3)(__NR_readlink, (UWord)path, (UWord)buf, bufsiz); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 650 | # elif defined(VGO_solaris) |
| 651 | res = VG_(do_syscall4)(__NR_readlinkat, VKI_AT_FDCWD, (UWord)path, |
| 652 | (UWord)buf, bufsiz); |
| 653 | # else |
| 654 | # error "Unknown OS" |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 655 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 656 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 657 | } |
| 658 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 659 | #if defined(VGO_linux) || defined(VGO_solaris) |
mjw | 495c656 | 2014-08-29 14:28:30 +0000 | [diff] [blame] | 660 | Int VG_(getdents64) (Int fd, struct vki_dirent64 *dirp, UInt count) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 661 | { |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 662 | SysRes res; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 663 | /* res = getdents( fd, dirp, count ); */ |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 664 | # if defined(VGP_amd64_solaris) |
| 665 | /* This silently assumes that dirent64 and dirent on amd64 are same, which |
| 666 | they should always be. */ |
| 667 | res = VG_(do_syscall3)(__NR_getdents, fd, (UWord)dirp, count); |
| 668 | # else |
mjw | 495c656 | 2014-08-29 14:28:30 +0000 | [diff] [blame] | 669 | res = VG_(do_syscall3)(__NR_getdents64, fd, (UWord)dirp, count); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 670 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 671 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 672 | } |
sewardj | b69cd96 | 2014-09-01 22:26:18 +0000 | [diff] [blame] | 673 | #endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 674 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 675 | /* Check accessibility of a file. Returns zero for access granted, |
| 676 | nonzero otherwise. */ |
njn | 63e5e6e | 2009-05-20 04:22:42 +0000 | [diff] [blame] | 677 | Int VG_(access) ( const HChar* path, Bool irusr, Bool iwusr, Bool ixusr ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 678 | { |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 679 | # if defined(VGO_linux) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 680 | /* Very annoyingly, I cannot find any definition for R_OK et al in |
| 681 | the kernel interfaces. Therefore I reluctantly resort to |
| 682 | hardwiring in these magic numbers that I determined by |
| 683 | experimentation. */ |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 684 | # define VKI_R_OK 4 |
| 685 | # define VKI_W_OK 2 |
| 686 | # define VKI_X_OK 1 |
| 687 | # endif |
| 688 | |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 689 | UWord w = (irusr ? VKI_R_OK : 0) |
| 690 | | (iwusr ? VKI_W_OK : 0) |
| 691 | | (ixusr ? VKI_X_OK : 0); |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 692 | # if defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 693 | SysRes res = VG_(do_syscall3)(__NR_faccessat, VKI_AT_FDCWD, (UWord)path, w); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 694 | # elif defined(VGO_linux) || defined(VGO_darwin) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 695 | SysRes res = VG_(do_syscall2)(__NR_access, (UWord)path, w); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 696 | # elif defined(VGO_solaris) |
| 697 | SysRes res = VG_(do_syscall4)(__NR_faccessat, VKI_AT_FDCWD, (UWord)path, |
| 698 | w, 0); |
| 699 | # else |
| 700 | # error "Unknown OS" |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 701 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 702 | return sr_isError(res) ? 1 : 0; |
| 703 | |
| 704 | # if defined(VGO_linux) |
| 705 | # undef VKI_R_OK |
| 706 | # undef VKI_W_OK |
| 707 | # undef VKI_X_OK |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 708 | # endif |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 709 | } |
| 710 | |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 711 | /* |
| 712 | Emulate the normal Unix permissions checking algorithm. |
| 713 | |
| 714 | If owner matches, then use the owner permissions, else |
| 715 | if group matches, then use the group permissions, else |
| 716 | use other permissions. |
| 717 | |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 718 | Note that we can't deal properly with SUID/SGID. By default |
| 719 | (allow_setuid == False), we refuse to run them (otherwise the |
| 720 | executable may misbehave if it doesn't have the permissions it |
| 721 | thinks it does). However, the caller may indicate that setuid |
| 722 | executables are allowed, for example if we are going to exec them |
| 723 | but not trace into them (iow, client sys_execve when |
| 724 | clo_trace_children == False). |
| 725 | |
| 726 | If VKI_EACCES is returned (iow, permission was refused), then |
| 727 | *is_setuid is set to True iff permission was refused because the |
| 728 | executable is setuid. |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 729 | */ |
| 730 | /* returns: 0 = success, non-0 is failure */ |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 731 | Int VG_(check_executable)(/*OUT*/Bool* is_setuid, |
njn | 63e5e6e | 2009-05-20 04:22:42 +0000 | [diff] [blame] | 732 | const HChar* f, Bool allow_setuid) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 733 | { |
sewardj | 4231a85 | 2008-08-19 08:32:03 +0000 | [diff] [blame] | 734 | struct vg_stat st; |
sewardj | 26b8728 | 2006-10-17 12:49:31 +0000 | [diff] [blame] | 735 | SysRes res = VG_(stat)(f, &st); |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 736 | |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 737 | if (is_setuid) |
| 738 | *is_setuid = False; |
| 739 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 740 | if (sr_isError(res)) { |
| 741 | return sr_Err(res); |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 742 | } |
| 743 | |
mjw | d6edbc9 | 2015-02-09 13:27:07 +0000 | [diff] [blame] | 744 | if ( VKI_S_ISDIR (st.mode) ) { |
| 745 | return VKI_EACCES; |
| 746 | } |
| 747 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 748 | if ( (st.mode & (VKI_S_ISUID | VKI_S_ISGID)) && !allow_setuid ) { |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 749 | if (is_setuid) |
| 750 | *is_setuid = True; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 751 | return VKI_EACCES; |
| 752 | } |
| 753 | |
tom | b7c2f9d | 2014-05-22 08:57:06 +0000 | [diff] [blame] | 754 | res = VG_(getxattr)(f, "security.capability", (Addr)0, 0); |
| 755 | if (!sr_isError(res) && !allow_setuid) { |
| 756 | if (is_setuid) |
| 757 | *is_setuid = True; |
| 758 | return VKI_EACCES; |
| 759 | } |
| 760 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 761 | if (VG_(geteuid)() == st.uid) { |
| 762 | if (!(st.mode & VKI_S_IXUSR)) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 763 | return VKI_EACCES; |
| 764 | } else { |
sewardj | 45406ef | 2006-10-18 00:33:46 +0000 | [diff] [blame] | 765 | Int grpmatch = 0; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 766 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 767 | if (VG_(getegid)() == st.gid) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 768 | grpmatch = 1; |
| 769 | else { |
florian | 94086c7 | 2014-09-30 19:26:58 +0000 | [diff] [blame] | 770 | UInt *groups = NULL; |
| 771 | Int ngrp; |
| 772 | |
| 773 | /* Find out # groups, allocate large enough array and fetch groups */ |
| 774 | ngrp = VG_(getgroups)(0, NULL); |
| 775 | if (ngrp != -1) { |
| 776 | groups = VG_(malloc)("check_executable", ngrp * sizeof *groups); |
| 777 | ngrp = VG_(getgroups)(ngrp, groups); |
| 778 | } |
| 779 | |
| 780 | Int i; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 781 | /* ngrp will be -1 if VG_(getgroups) failed. */ |
| 782 | for (i = 0; i < ngrp; i++) { |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 783 | if (groups[i] == st.gid) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 784 | grpmatch = 1; |
| 785 | break; |
| 786 | } |
| 787 | } |
florian | 94086c7 | 2014-09-30 19:26:58 +0000 | [diff] [blame] | 788 | VG_(free)(groups); |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 789 | } |
| 790 | |
| 791 | if (grpmatch) { |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 792 | if (!(st.mode & VKI_S_IXGRP)) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 793 | return VKI_EACCES; |
| 794 | } |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 795 | } else if (!(st.mode & VKI_S_IXOTH)) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 796 | return VKI_EACCES; |
| 797 | } |
| 798 | } |
| 799 | |
| 800 | return 0; |
| 801 | } |
| 802 | |
njn | c4431bf | 2009-01-15 21:29:24 +0000 | [diff] [blame] | 803 | SysRes VG_(pread) ( Int fd, void* buf, Int count, OffT offset ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 804 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 805 | SysRes res; |
philippe | 8050bb7 | 2012-04-13 23:07:29 +0000 | [diff] [blame] | 806 | // on 32 bits platforms, we receive a 32 bits OffT but |
| 807 | // we must extend it to pass a long long 64 bits. |
| 808 | # if defined(VGP_x86_linux) |
| 809 | vg_assert(sizeof(OffT) == 4); |
| 810 | res = VG_(do_syscall5)(__NR_pread64, fd, (UWord)buf, count, |
| 811 | offset, 0); // Little endian long long |
| 812 | return res; |
| 813 | # elif defined(VGP_arm_linux) |
| 814 | vg_assert(sizeof(OffT) == 4); |
| 815 | res = VG_(do_syscall5)(__NR_pread64, fd, (UWord)buf, count, |
| 816 | 0, offset); // Big endian long long |
| 817 | return res; |
| 818 | # elif defined(VGP_ppc32_linux) |
| 819 | vg_assert(sizeof(OffT) == 4); |
| 820 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 821 | 0, // Padding needed on PPC32 |
| 822 | 0, offset); // Big endian long long |
| 823 | return res; |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 824 | # elif defined(VGP_mips32_linux) && (VKI_LITTLE_ENDIAN) |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 825 | vg_assert(sizeof(OffT) == 4); |
| 826 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 827 | 0, offset, 0); |
| 828 | return res; |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 829 | # elif defined(VGP_mips32_linux) && (VKI_BIG_ENDIAN) |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 830 | vg_assert(sizeof(OffT) == 4); |
| 831 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 832 | 0, 0, offset); |
| 833 | return res; |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 834 | # elif defined(VGP_amd64_linux) || defined(VGP_s390x_linux) \ |
| 835 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 836 | || defined(VGP_mips64_linux) \ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 837 | || defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
philippe | 8050bb7 | 2012-04-13 23:07:29 +0000 | [diff] [blame] | 838 | res = VG_(do_syscall4)(__NR_pread64, fd, (UWord)buf, count, offset); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 839 | return res; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 840 | # elif defined(VGP_amd64_darwin) |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 841 | vg_assert(sizeof(OffT) == 8); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 842 | res = VG_(do_syscall4)(__NR_pread_nocancel, fd, (UWord)buf, count, offset); |
| 843 | return res; |
| 844 | # elif defined(VGP_x86_darwin) |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 845 | vg_assert(sizeof(OffT) == 8); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 846 | res = VG_(do_syscall5)(__NR_pread_nocancel, fd, (UWord)buf, count, |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 847 | offset & 0xffffffff, offset >> 32); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 848 | return res; |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 849 | # elif defined(VGP_x86_solaris) |
| 850 | vg_assert(sizeof(OffT) == 4); |
| 851 | res = VG_(do_syscall4)(__NR_pread, fd, (UWord)buf, count, offset); |
| 852 | return res; |
| 853 | # elif defined(VGP_amd64_solaris) |
| 854 | vg_assert(sizeof(OffT) == 8); |
| 855 | res = VG_(do_syscall4)(__NR_pread, fd, (UWord)buf, count, offset); |
| 856 | return res; |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 857 | # else |
| 858 | # error "Unknown platform" |
| 859 | # endif |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 860 | } |
| 861 | |
florian | b985e2d | 2011-09-29 03:03:45 +0000 | [diff] [blame] | 862 | /* Return the name of a directory for temporary files. */ |
| 863 | const HChar *VG_(tmpdir)(void) |
| 864 | { |
| 865 | const HChar *tmpdir; |
| 866 | |
| 867 | tmpdir = VG_(getenv)("TMPDIR"); |
| 868 | if (tmpdir == NULL || *tmpdir == '\0') tmpdir = VG_TMPDIR; |
| 869 | if (tmpdir == NULL || *tmpdir == '\0') tmpdir = "/tmp"; /* fallback */ |
| 870 | |
| 871 | return tmpdir; |
| 872 | } |
| 873 | |
florian | 6037226 | 2014-08-09 21:45:56 +0000 | [diff] [blame] | 874 | static const HChar mkstemp_format[] = "%s/valgrind_%s_%08x"; |
philippe | cc64826 | 2013-05-26 21:09:20 +0000 | [diff] [blame] | 875 | |
| 876 | SizeT VG_(mkstemp_fullname_bufsz) ( SizeT part_of_name_len ) |
| 877 | { |
| 878 | return VG_(strlen)(mkstemp_format) |
| 879 | + VG_(strlen)(VG_(tmpdir)()) - 2 // %s tmpdir |
| 880 | + part_of_name_len - 2 // %s part_of_name |
| 881 | + 8 - 4 // %08x |
| 882 | + 1; // trailing 0 |
| 883 | } |
| 884 | |
| 885 | |
philippe | d47676f | 2014-08-09 11:26:51 +0000 | [diff] [blame] | 886 | Int VG_(mkstemp) ( const HChar* part_of_name, /*OUT*/HChar* fullname ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 887 | { |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 888 | Int n, tries; |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 889 | UInt seed; |
| 890 | SysRes sres; |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 891 | const HChar *tmpdir; |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 892 | |
| 893 | vg_assert(part_of_name); |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 894 | vg_assert(fullname); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 895 | n = VG_(strlen)(part_of_name); |
| 896 | vg_assert(n > 0 && n < 100); |
| 897 | |
| 898 | seed = (VG_(getpid)() << 9) ^ VG_(getppid)(); |
| 899 | |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 900 | /* Determine sensible location for temporary files */ |
florian | b985e2d | 2011-09-29 03:03:45 +0000 | [diff] [blame] | 901 | tmpdir = VG_(tmpdir)(); |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 902 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 903 | tries = 0; |
| 904 | while (True) { |
sewardj | 824b397 | 2011-05-09 22:42:06 +0000 | [diff] [blame] | 905 | if (tries++ > 10) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 906 | return -1; |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 907 | VG_(sprintf)( fullname, mkstemp_format, |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 908 | tmpdir, part_of_name, VG_(random)( &seed )); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 909 | if (0) |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 910 | VG_(printf)("VG_(mkstemp): trying: %s\n", fullname); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 911 | |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 912 | sres = VG_(open)(fullname, |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 913 | VKI_O_CREAT|VKI_O_RDWR|VKI_O_EXCL|VKI_O_TRUNC, |
| 914 | VKI_S_IRUSR|VKI_S_IWUSR); |
sewardj | 80fc03b | 2011-09-26 16:46:04 +0000 | [diff] [blame] | 915 | if (sr_isError(sres)) { |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 916 | VG_(umsg)("VG_(mkstemp): failed to create temp file: %s\n", fullname); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 917 | continue; |
sewardj | 80fc03b | 2011-09-26 16:46:04 +0000 | [diff] [blame] | 918 | } |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 919 | /* VG_(safe_fd) doesn't return if it fails. */ |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 920 | return VG_(safe_fd)( sr_Res(sres) ); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 921 | } |
| 922 | /* NOTREACHED */ |
| 923 | } |
| 924 | |
| 925 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 926 | /* --------------------------------------------------------------------- |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 927 | Socket-related stuff. |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 928 | ------------------------------------------------------------------ */ |
| 929 | |
| 930 | static |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 931 | Int parse_inet_addr_and_port ( const HChar* str, UInt* ip_addr, UShort* port ); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 932 | |
| 933 | static |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 934 | Int my_connect ( Int sockfd, struct vki_sockaddr_in* serv_addr, Int addrlen ); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 935 | |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 936 | UInt VG_(htonl) ( UInt x ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 937 | { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 938 | # if defined(VG_BIGENDIAN) |
| 939 | return x; |
| 940 | # else |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 941 | return |
| 942 | (((x >> 24) & 0xFF) << 0) | (((x >> 16) & 0xFF) << 8) |
| 943 | | (((x >> 8) & 0xFF) << 16) | (((x >> 0) & 0xFF) << 24); |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 944 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 945 | } |
| 946 | |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 947 | UInt VG_(ntohl) ( UInt x ) |
| 948 | { |
| 949 | # if defined(VG_BIGENDIAN) |
| 950 | return x; |
| 951 | # else |
| 952 | return |
| 953 | (((x >> 24) & 0xFF) << 0) | (((x >> 16) & 0xFF) << 8) |
| 954 | | (((x >> 8) & 0xFF) << 16) | (((x >> 0) & 0xFF) << 24); |
| 955 | # endif |
| 956 | } |
| 957 | |
| 958 | UShort VG_(htons) ( UShort x ) |
| 959 | { |
| 960 | # if defined(VG_BIGENDIAN) |
| 961 | return x; |
| 962 | # else |
| 963 | return |
| 964 | (((x >> 8) & 0xFF) << 0) | (((x >> 0) & 0xFF) << 8); |
| 965 | # endif |
| 966 | } |
| 967 | |
| 968 | UShort VG_(ntohs) ( UShort x ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 969 | { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 970 | # if defined(VG_BIGENDIAN) |
| 971 | return x; |
| 972 | # else |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 973 | return |
| 974 | (((x >> 8) & 0xFF) << 0) | (((x >> 0) & 0xFF) << 8); |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 975 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 976 | } |
| 977 | |
| 978 | |
| 979 | /* The main function. |
| 980 | |
| 981 | Supplied string contains either an ip address "192.168.0.1" or |
| 982 | an ip address and port pair, "192.168.0.1:1500". Parse these, |
| 983 | and return: |
| 984 | -1 if there is a parse error |
| 985 | -2 if no parse error, but specified host:port cannot be opened |
| 986 | the relevant file (socket) descriptor, otherwise. |
| 987 | is used. |
| 988 | */ |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 989 | Int VG_(connect_via_socket)( const HChar* str ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 990 | { |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 991 | # if defined(VGO_linux) || defined(VGO_darwin) || defined(VGO_solaris) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 992 | Int sd, res; |
| 993 | struct vki_sockaddr_in servAddr; |
| 994 | UInt ip = 0; |
| 995 | UShort port = VG_CLO_DEFAULT_LOGPORT; |
| 996 | Bool ok = parse_inet_addr_and_port(str, &ip, &port); |
| 997 | if (!ok) |
| 998 | return -1; |
| 999 | |
| 1000 | //if (0) |
| 1001 | // VG_(printf)("ip = %d.%d.%d.%d, port %d\n", |
| 1002 | // (ip >> 24) & 0xFF, (ip >> 16) & 0xFF, |
| 1003 | // (ip >> 8) & 0xFF, ip & 0xFF, |
| 1004 | // (UInt)port ); |
| 1005 | |
| 1006 | servAddr.sin_family = VKI_AF_INET; |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 1007 | servAddr.sin_addr.s_addr = VG_(htonl)(ip); |
| 1008 | servAddr.sin_port = VG_(htons)(port); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1009 | |
| 1010 | /* create socket */ |
njn | 0cd5d97 | 2009-05-22 02:00:27 +0000 | [diff] [blame] | 1011 | sd = VG_(socket)(VKI_AF_INET, VKI_SOCK_STREAM, 0 /* IPPROTO_IP ? */); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1012 | if (sd < 0) { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 1013 | /* this shouldn't happen ... nevertheless */ |
| 1014 | return -2; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1015 | } |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 1016 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1017 | /* connect to server */ |
njn | b143b27 | 2009-05-22 00:47:08 +0000 | [diff] [blame] | 1018 | res = my_connect(sd, &servAddr, sizeof(servAddr)); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1019 | if (res < 0) { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 1020 | /* connection failed */ |
| 1021 | return -2; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1022 | } |
| 1023 | |
| 1024 | return sd; |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1025 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1026 | # else |
| 1027 | # error "Unknown OS" |
| 1028 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1029 | } |
| 1030 | |
| 1031 | |
| 1032 | /* Let d = one or more digits. Accept either: |
| 1033 | d.d.d.d or d.d.d.d:d |
| 1034 | */ |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1035 | static Int parse_inet_addr_and_port ( const HChar* str, UInt* ip_addr, UShort* port ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1036 | { |
| 1037 | # define GET_CH ((*str) ? (*str++) : 0) |
| 1038 | UInt ipa, i, j, c, any; |
| 1039 | ipa = 0; |
| 1040 | for (i = 0; i < 4; i++) { |
| 1041 | j = 0; |
| 1042 | any = 0; |
| 1043 | while (1) { |
| 1044 | c = GET_CH; |
| 1045 | if (c < '0' || c > '9') break; |
| 1046 | j = 10 * j + (int)(c - '0'); |
| 1047 | any = 1; |
| 1048 | } |
| 1049 | if (any == 0 || j > 255) goto syntaxerr; |
| 1050 | ipa = (ipa << 8) + j; |
| 1051 | if (i <= 2 && c != '.') goto syntaxerr; |
| 1052 | } |
| 1053 | if (c == 0 || c == ':') |
| 1054 | *ip_addr = ipa; |
| 1055 | if (c == 0) goto ok; |
| 1056 | if (c != ':') goto syntaxerr; |
| 1057 | j = 0; |
| 1058 | any = 0; |
| 1059 | while (1) { |
| 1060 | c = GET_CH; |
| 1061 | if (c < '0' || c > '9') break; |
| 1062 | j = j * 10 + (int)(c - '0'); |
| 1063 | any = 1; |
| 1064 | if (j > 65535) goto syntaxerr; |
| 1065 | } |
| 1066 | if (any == 0 || c != 0) goto syntaxerr; |
| 1067 | if (j < 1024) goto syntaxerr; |
| 1068 | *port = (UShort)j; |
| 1069 | ok: |
| 1070 | return 1; |
| 1071 | syntaxerr: |
| 1072 | return 0; |
| 1073 | # undef GET_CH |
| 1074 | } |
| 1075 | |
njn | 0cd5d97 | 2009-05-22 02:00:27 +0000 | [diff] [blame] | 1076 | // GrP fixme safe_fd? |
| 1077 | Int VG_(socket) ( Int domain, Int type, Int protocol ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1078 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1079 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1080 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1081 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1082 | SysRes res; |
| 1083 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1084 | args[0] = domain; |
| 1085 | args[1] = type; |
| 1086 | args[2] = protocol; |
| 1087 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SOCKET, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1088 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 1089 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1090 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1091 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 1092 | || defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 1093 | SysRes res; |
| 1094 | res = VG_(do_syscall3)(__NR_socket, domain, type, protocol ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1095 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1096 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1097 | # elif defined(VGO_darwin) |
| 1098 | SysRes res; |
| 1099 | res = VG_(do_syscall3)(__NR_socket, domain, type, protocol); |
| 1100 | if (!sr_isError(res)) { |
| 1101 | // Set SO_NOSIGPIPE so write() returns EPIPE instead of raising SIGPIPE |
| 1102 | Int optval = 1; |
| 1103 | SysRes res2; |
| 1104 | res2 = VG_(do_syscall5)(__NR_setsockopt, sr_Res(res), VKI_SOL_SOCKET, |
| 1105 | VKI_SO_NOSIGPIPE, (UWord)&optval, |
| 1106 | sizeof(optval)); |
| 1107 | // ignore setsockopt() error |
| 1108 | } |
| 1109 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1110 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1111 | # elif defined(VGO_solaris) |
| 1112 | /* XXX There doesn't seem to be an easy way to convince the send syscall to |
| 1113 | only return EPIPE instead of raising SIGPIPE. EPIPE is only returned if |
| 1114 | SM_KERNEL is set on the socket. Without serious hackery it looks we |
| 1115 | can't set this flag. |
| 1116 | |
| 1117 | Should we wrap the send syscall below into sigprocmask calls to block |
| 1118 | SIGPIPE? |
| 1119 | */ |
| 1120 | SysRes res; |
| 1121 | res = VG_(do_syscall5)(__NR_so_socket, domain, type, protocol, |
| 1122 | 0 /*devpath*/, VKI_SOV_DEFAULT /*version*/); |
| 1123 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1124 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1125 | # else |
| 1126 | # error "Unknown arch" |
| 1127 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1128 | } |
| 1129 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1130 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1131 | static |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 1132 | Int my_connect ( Int sockfd, struct vki_sockaddr_in* serv_addr, Int addrlen ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1133 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1134 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1135 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1136 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1137 | SysRes res; |
| 1138 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1139 | args[0] = sockfd; |
| 1140 | args[1] = (UWord)serv_addr; |
| 1141 | args[2] = addrlen; |
| 1142 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_CONNECT, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1143 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 1144 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1145 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1146 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 1147 | || defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 1148 | SysRes res; |
| 1149 | res = VG_(do_syscall3)(__NR_connect, sockfd, (UWord)serv_addr, addrlen); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1150 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1151 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1152 | # elif defined(VGO_darwin) |
| 1153 | SysRes res; |
| 1154 | res = VG_(do_syscall3)(__NR_connect_nocancel, |
| 1155 | sockfd, (UWord)serv_addr, addrlen); |
| 1156 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1157 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1158 | # elif defined(VGO_solaris) |
| 1159 | SysRes res; |
| 1160 | res = VG_(do_syscall4)(__NR_connect, sockfd, (UWord)serv_addr, addrlen, |
| 1161 | VKI_SOV_DEFAULT /*version*/); |
| 1162 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1163 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1164 | # else |
| 1165 | # error "Unknown arch" |
| 1166 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1167 | } |
| 1168 | |
florian | dbb3584 | 2012-10-27 18:39:11 +0000 | [diff] [blame] | 1169 | Int VG_(write_socket)( Int sd, const void *msg, Int count ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1170 | { |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1171 | /* This is actually send(). */ |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1172 | |
| 1173 | /* For Linux, VKI_MSG_NOSIGNAL is a request not to send SIGPIPE on |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1174 | errors on stream oriented sockets when the other end breaks the |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1175 | connection. The EPIPE error is still returned. |
| 1176 | |
| 1177 | For Darwin, VG_(socket)() sets SO_NOSIGPIPE to get EPIPE instead of |
| 1178 | SIGPIPE */ |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1179 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1180 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1181 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1182 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1183 | SysRes res; |
| 1184 | UWord args[4]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1185 | args[0] = sd; |
| 1186 | args[1] = (UWord)msg; |
| 1187 | args[2] = count; |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1188 | args[3] = VKI_MSG_NOSIGNAL; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1189 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SEND, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1190 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 1191 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1192 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1193 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 1194 | || defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 1195 | SysRes res; |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1196 | res = VG_(do_syscall6)(__NR_sendto, sd, (UWord)msg, |
| 1197 | count, VKI_MSG_NOSIGNAL, 0,0); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1198 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1199 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1200 | # elif defined(VGP_x86_darwin) || defined(VGP_amd64_darwin) |
| 1201 | SysRes res; |
| 1202 | res = VG_(do_syscall3)(__NR_write_nocancel, sd, (UWord)msg, count); |
| 1203 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1204 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1205 | # elif defined(VGO_solaris) |
| 1206 | SysRes res; |
| 1207 | res = VG_(do_syscall4)(__NR_send, sd, (UWord)msg, count, 0 /*flags*/); |
| 1208 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1209 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1210 | # else |
| 1211 | # error "Unknown platform" |
| 1212 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1213 | } |
| 1214 | |
| 1215 | Int VG_(getsockname) ( Int sd, struct vki_sockaddr *name, Int *namelen) |
| 1216 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1217 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1218 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1219 | || defined(VGP_s390x_linux) \ |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1220 | || defined(VGP_mips32_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1221 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1222 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1223 | args[0] = sd; |
| 1224 | args[1] = (UWord)name; |
| 1225 | args[2] = (UWord)namelen; |
| 1226 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETSOCKNAME, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1227 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1228 | |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 1229 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 1230 | || defined(VGP_mips64_linux) || defined(VGP_arm64_linux) \ |
| 1231 | || defined(VGP_tilegx_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1232 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1233 | res = VG_(do_syscall3)( __NR_getsockname, |
| 1234 | (UWord)sd, (UWord)name, (UWord)namelen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1235 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1236 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1237 | # elif defined(VGO_darwin) |
| 1238 | SysRes res; |
| 1239 | res = VG_(do_syscall3)( __NR_getsockname, |
| 1240 | (UWord)sd, (UWord)name, (UWord)namelen ); |
| 1241 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1242 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1243 | # elif defined(VGO_solaris) |
| 1244 | SysRes res; |
| 1245 | res = VG_(do_syscall4)(__NR_getsockname, sd, (UWord)name, (UWord)namelen, |
| 1246 | VKI_SOV_DEFAULT /*version*/); |
| 1247 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1248 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1249 | # else |
| 1250 | # error "Unknown platform" |
| 1251 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1252 | } |
| 1253 | |
| 1254 | Int VG_(getpeername) ( Int sd, struct vki_sockaddr *name, Int *namelen) |
| 1255 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1256 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1257 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1258 | || defined(VGP_s390x_linux) \ |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1259 | || defined(VGP_mips32_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1260 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1261 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1262 | args[0] = sd; |
| 1263 | args[1] = (UWord)name; |
| 1264 | args[2] = (UWord)namelen; |
| 1265 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETPEERNAME, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1266 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1267 | |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 1268 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 1269 | || defined(VGP_mips64_linux) || defined(VGP_arm64_linux) \ |
| 1270 | || defined(VGP_tilegx_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1271 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1272 | res = VG_(do_syscall3)( __NR_getpeername, |
| 1273 | (UWord)sd, (UWord)name, (UWord)namelen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1274 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1275 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1276 | # elif defined(VGO_darwin) |
| 1277 | SysRes res; |
| 1278 | res = VG_(do_syscall3)( __NR_getpeername, |
| 1279 | (UWord)sd, (UWord)name, (UWord)namelen ); |
| 1280 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1281 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1282 | # elif defined(VGO_solaris) |
| 1283 | SysRes res; |
| 1284 | res = VG_(do_syscall4)(__NR_getpeername, sd, (UWord)name, (UWord)namelen, |
| 1285 | VKI_SOV_DEFAULT /*version*/); |
| 1286 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1287 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1288 | # else |
| 1289 | # error "Unknown platform" |
| 1290 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1291 | } |
| 1292 | |
| 1293 | Int VG_(getsockopt) ( Int sd, Int level, Int optname, void *optval, |
| 1294 | Int *optlen) |
| 1295 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1296 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1297 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1298 | || defined(VGP_s390x_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1299 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1300 | UWord args[5]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1301 | args[0] = sd; |
| 1302 | args[1] = level; |
| 1303 | args[2] = optname; |
| 1304 | args[3] = (UWord)optval; |
| 1305 | args[4] = (UWord)optlen; |
| 1306 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETSOCKOPT, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1307 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1308 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1309 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1310 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 1311 | || defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1312 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1313 | res = VG_(do_syscall5)( __NR_getsockopt, |
| 1314 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1315 | (UWord)optval, (UWord)optlen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1316 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1317 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1318 | # elif defined(VGO_darwin) |
| 1319 | SysRes res; |
| 1320 | res = VG_(do_syscall5)( __NR_getsockopt, |
| 1321 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1322 | (UWord)optval, (UWord)optlen ); |
| 1323 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1324 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1325 | # elif defined(VGO_solaris) |
| 1326 | SysRes res; |
| 1327 | res = VG_(do_syscall6)(__NR_getsockopt, sd, level, optname, (UWord)optval, |
| 1328 | (UWord)optlen, VKI_SOV_DEFAULT /*version*/); |
| 1329 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1330 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1331 | # else |
| 1332 | # error "Unknown platform" |
| 1333 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1334 | } |
| 1335 | |
| 1336 | |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1337 | Int VG_(setsockopt) ( Int sd, Int level, Int optname, void *optval, |
| 1338 | Int optlen) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1339 | { |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1340 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1341 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1342 | || defined(VGP_s390x_linux) |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1343 | SysRes res; |
| 1344 | UWord args[5]; |
| 1345 | args[0] = sd; |
| 1346 | args[1] = level; |
| 1347 | args[2] = optname; |
| 1348 | args[3] = (UWord)optval; |
| 1349 | args[4] = (UWord)optlen; |
| 1350 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SETSOCKOPT, (UWord)&args); |
| 1351 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1352 | |
| 1353 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1354 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 1355 | || defined(VGP_arm64_linux) || defined(VGP_tilegx_linux) |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1356 | SysRes res; |
| 1357 | res = VG_(do_syscall5)( __NR_setsockopt, |
| 1358 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1359 | (UWord)optval, (UWord)optlen ); |
| 1360 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1361 | |
| 1362 | # elif defined(VGO_darwin) |
| 1363 | SysRes res; |
| 1364 | res = VG_(do_syscall5)( __NR_setsockopt, |
| 1365 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1366 | (UWord)optval, (UWord)optlen ); |
| 1367 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1368 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1369 | # elif defined(VGO_solaris) |
| 1370 | SysRes res; |
| 1371 | res = VG_(do_syscall6)( __NR_setsockopt, |
| 1372 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1373 | (UWord)optval, (UWord)optlen, |
| 1374 | VKI_SOV_DEFAULT /*version*/ ); |
| 1375 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1376 | |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1377 | # else |
| 1378 | # error "Unknown platform" |
| 1379 | # endif |
| 1380 | } |
| 1381 | |
| 1382 | |
florian | 6bd9dc1 | 2012-11-23 16:17:43 +0000 | [diff] [blame] | 1383 | const HChar *VG_(basename)(const HChar *path) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1384 | { |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1385 | static HChar *buf = NULL; |
| 1386 | static SizeT buf_len = 0; |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1387 | const HChar *p, *end; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1388 | |
| 1389 | if (path == NULL || |
| 1390 | 0 == VG_(strcmp)(path, "")) |
| 1391 | { |
| 1392 | return "."; |
| 1393 | } |
| 1394 | |
| 1395 | p = path + VG_(strlen)(path); |
| 1396 | while (p > path && *p == '/') { |
| 1397 | // skip all trailing '/' |
| 1398 | p--; |
| 1399 | } |
| 1400 | |
| 1401 | if (p == path && *p == '/') return "/"; // all slashes |
| 1402 | |
| 1403 | end = p; |
| 1404 | |
| 1405 | while (p > path && *p != '/') { |
| 1406 | // now skip non '/' |
| 1407 | p--; |
| 1408 | } |
| 1409 | |
| 1410 | if (*p == '/') p++; |
| 1411 | |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1412 | SizeT need = end-p+1 + 1; |
| 1413 | if (need > buf_len) { |
| 1414 | buf_len = (buf_len == 0) ? 500 : need; |
| 1415 | buf = VG_(realloc)("basename", buf, buf_len); |
| 1416 | } |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1417 | VG_(strncpy)(buf, p, end-p+1); |
| 1418 | buf[end-p+1] = '\0'; |
| 1419 | |
| 1420 | return buf; |
| 1421 | } |
| 1422 | |
| 1423 | |
florian | 6bd9dc1 | 2012-11-23 16:17:43 +0000 | [diff] [blame] | 1424 | const HChar *VG_(dirname)(const HChar *path) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1425 | { |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1426 | static HChar *buf = NULL; |
| 1427 | static SizeT buf_len = 0; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1428 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1429 | const HChar *p; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1430 | |
| 1431 | if (path == NULL || |
| 1432 | 0 == VG_(strcmp)(path, "") || |
| 1433 | 0 == VG_(strcmp)(path, "/")) |
| 1434 | { |
| 1435 | return "."; |
| 1436 | } |
| 1437 | |
| 1438 | p = path + VG_(strlen)(path); |
| 1439 | while (p > path && *p == '/') { |
| 1440 | // skip all trailing '/' |
| 1441 | p--; |
| 1442 | } |
| 1443 | |
| 1444 | while (p > path && *p != '/') { |
| 1445 | // now skip non '/' |
| 1446 | p--; |
| 1447 | } |
| 1448 | |
| 1449 | if (p == path) { |
| 1450 | if (*p == '/') return "/"; // all slashes |
| 1451 | else return "."; // no slashes |
| 1452 | } |
| 1453 | |
| 1454 | while (p > path && *p == '/') { |
| 1455 | // skip '/' again |
| 1456 | p--; |
| 1457 | } |
| 1458 | |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1459 | SizeT need = p-path+1 + 1; |
| 1460 | if (need > buf_len) { |
| 1461 | buf_len = (buf_len == 0) ? 500 : need; |
| 1462 | buf = VG_(realloc)("dirname", buf, buf_len); |
| 1463 | } |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1464 | VG_(strncpy)(buf, path, p-path+1); |
| 1465 | buf[p-path+1] = '\0'; |
| 1466 | |
| 1467 | return buf; |
| 1468 | } |
| 1469 | |
| 1470 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1471 | /*--------------------------------------------------------------------*/ |
| 1472 | /*--- end ---*/ |
| 1473 | /*--------------------------------------------------------------------*/ |