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 | |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 11 | Copyright (C) 2000-2017 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 | { |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 141 | # if defined(VGP_arm64_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 | { |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 159 | # if defined(VGP_arm64_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 | } |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 253 | # elif defined(VGP_arm64_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; |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 363 | # if defined(VGP_arm64_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 | { |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 483 | # if defined(VGP_arm64_linux) |
| 484 | /* We only have dup3, that means we have to mimic dup2. |
| 485 | The only real difference is when oldfd == newfd. |
| 486 | dup3 always returns an error, but dup2 returns only an |
| 487 | error if the fd is invalid, otherwise it returns newfd. */ |
| 488 | if (oldfd == newfd) { |
| 489 | if (VG_(fcntl)(oldfd, VKI_F_GETFL, 0) == -1) |
| 490 | return VG_(mk_SysRes_Error)(VKI_EBADF); |
| 491 | return VG_(mk_SysRes_Success)(newfd); |
| 492 | } |
| 493 | return VG_(do_syscall3)(__NR_dup3, oldfd, newfd, 0); |
| 494 | # elif defined(VGO_linux) || defined(VGO_darwin) |
njn | fad9837 | 2008-10-12 19:53:28 +0000 | [diff] [blame] | 495 | return VG_(do_syscall2)(__NR_dup2, oldfd, newfd); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 496 | # elif defined(VGO_solaris) |
| 497 | return VG_(do_syscall3)(__NR_fcntl, oldfd, F_DUP2FD, newfd); |
sewardj | 485ce16 | 2008-10-22 00:57:29 +0000 | [diff] [blame] | 498 | # else |
| 499 | # error Unknown OS |
| 500 | # endif |
njn | fad9837 | 2008-10-12 19:53:28 +0000 | [diff] [blame] | 501 | } |
| 502 | |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 503 | /* Returns -1 on error. */ |
njn | bb7af3f | 2009-05-22 07:08:12 +0000 | [diff] [blame] | 504 | Int VG_(fcntl) ( Int fd, Int cmd, Addr arg ) |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 505 | { |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 506 | # if defined(VGO_linux) || defined(VGO_solaris) |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 507 | SysRes res = VG_(do_syscall3)(__NR_fcntl, fd, cmd, arg); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 508 | # elif defined(VGO_darwin) |
| 509 | SysRes res = VG_(do_syscall3)(__NR_fcntl_nocancel, fd, cmd, arg); |
| 510 | # else |
| 511 | # error "Unknown OS" |
| 512 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 513 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 514 | } |
| 515 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 516 | Int VG_(rename) ( const HChar* old_name, const HChar* new_name ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 517 | { |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 518 | # if defined(VGO_solaris) || defined(VGP_arm64_linux) |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 519 | SysRes res = VG_(do_syscall4)(__NR_renameat, VKI_AT_FDCWD, (UWord)old_name, |
| 520 | VKI_AT_FDCWD, (UWord)new_name); |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 521 | # elif defined(VGO_linux) || defined(VGO_darwin) |
| 522 | SysRes res = VG_(do_syscall2)(__NR_rename, (UWord)old_name, (UWord)new_name); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 523 | # else |
| 524 | # error "Unknown OS" |
sewardj | 112711a | 2015-04-10 12:30:09 +0000 | [diff] [blame] | 525 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 526 | return sr_isError(res) ? (-1) : 0; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 527 | } |
| 528 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 529 | Int VG_(unlink) ( const HChar* file_name ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 530 | { |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 531 | # if defined(VGP_arm64_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 532 | SysRes res = VG_(do_syscall2)(__NR_unlinkat, VKI_AT_FDCWD, |
| 533 | (UWord)file_name); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 534 | # elif defined(VGO_linux) || defined(VGO_darwin) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 535 | SysRes res = VG_(do_syscall1)(__NR_unlink, (UWord)file_name); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 536 | # elif defined(VGO_solaris) |
| 537 | SysRes res = VG_(do_syscall3)(__NR_unlinkat, VKI_AT_FDCWD, |
| 538 | (UWord)file_name, 0); |
| 539 | # else |
| 540 | # error "Unknown OS" |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 541 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 542 | return sr_isError(res) ? (-1) : 0; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 543 | } |
| 544 | |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 545 | /* The working directory at startup. |
| 546 | All that is really needed is to note the cwd at process startup. |
| 547 | Hence VG_(record_startup_wd) notes it (in a platform dependent way) |
| 548 | and VG_(get_startup_wd) produces the noted value. */ |
| 549 | static HChar *startup_wd; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 550 | |
| 551 | /* Record the process' working directory at startup. Is intended to |
| 552 | be called exactly once, at startup, before the working directory |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 553 | changes. */ |
| 554 | void VG_(record_startup_wd) ( void ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 555 | { |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 556 | # if defined(VGO_linux) || defined(VGO_solaris) |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 557 | /* Simple: just ask the kernel */ |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 558 | SysRes res; |
| 559 | SizeT szB = 0; |
| 560 | do { |
| 561 | szB += 500; |
| 562 | startup_wd = VG_(realloc)("startup_wd", startup_wd, szB); |
| 563 | VG_(memset)(startup_wd, 0, szB); |
| 564 | res = VG_(do_syscall2)(__NR_getcwd, (UWord)startup_wd, szB-1); |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 565 | } while (sr_isError(res) && sr_Err(res) == VKI_ERANGE); |
| 566 | |
| 567 | if (sr_isError(res)) { |
| 568 | VG_(free)(startup_wd); |
| 569 | startup_wd = NULL; |
| 570 | return; |
| 571 | } |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 572 | |
| 573 | vg_assert(startup_wd[szB-1] == 0); |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 574 | |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 575 | # elif defined(VGO_darwin) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 576 | /* We can't ask the kernel, so instead rely on launcher-*.c to |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 577 | tell us the startup path. Note the env var is keyed to the |
| 578 | parent's PID, not ours, since our parent is the launcher |
| 579 | process. */ |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 580 | { HChar envvar[100]; // large enough |
| 581 | HChar* wd; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 582 | VG_(memset)(envvar, 0, sizeof(envvar)); |
| 583 | VG_(sprintf)(envvar, "VALGRIND_STARTUP_PWD_%d_XYZZY", |
| 584 | (Int)VG_(getppid)()); |
| 585 | wd = VG_(getenv)( envvar ); |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 586 | if (wd == NULL) |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 587 | return; |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 588 | SizeT need = VG_(strlen)(wd) + 1; |
| 589 | startup_wd = VG_(malloc)("startup_wd", need); |
| 590 | VG_(strcpy)(startup_wd, wd); |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 591 | } |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 592 | # else |
| 593 | # error Unknown OS |
| 594 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 595 | } |
| 596 | |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 597 | /* Return the previously acquired startup_wd or NULL. */ |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 598 | const HChar *VG_(get_startup_wd) ( void ) |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 599 | { |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame] | 600 | return startup_wd; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 601 | } |
| 602 | |
philippe | 4254584 | 2013-12-05 22:10:55 +0000 | [diff] [blame] | 603 | SysRes VG_(poll) (struct vki_pollfd *fds, Int nfds, Int timeout) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 604 | { |
| 605 | SysRes res; |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 606 | # if defined(VGP_arm64_linux) |
philippe | 0eb0d5a | 2014-02-11 23:50:16 +0000 | [diff] [blame] | 607 | /* ARM64 wants to use __NR_ppoll rather than __NR_poll. */ |
| 608 | struct vki_timespec timeout_ts; |
| 609 | if (timeout >= 0) { |
| 610 | timeout_ts.tv_sec = timeout / 1000; |
| 611 | timeout_ts.tv_nsec = ((long)timeout % 1000) * 1000000; |
| 612 | } |
| 613 | res = VG_(do_syscall4)(__NR_ppoll, |
| 614 | (UWord)fds, nfds, |
| 615 | (UWord)(timeout >= 0 ? &timeout_ts : NULL), |
| 616 | (UWord)NULL); |
| 617 | # elif defined(VGO_linux) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 618 | res = VG_(do_syscall3)(__NR_poll, (UWord)fds, nfds, timeout); |
sewardj | 6caac71 | 2012-08-18 06:45:07 +0000 | [diff] [blame] | 619 | # elif defined(VGO_darwin) |
| 620 | res = VG_(do_syscall3)(__NR_poll_nocancel, (UWord)fds, nfds, timeout); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 621 | # elif defined(VGO_solaris) |
| 622 | struct vki_timespec ts; |
| 623 | struct vki_timespec *tsp; |
| 624 | |
| 625 | if (timeout < 0) |
| 626 | tsp = NULL; |
| 627 | else { |
| 628 | ts.tv_sec = timeout / 1000; |
| 629 | ts.tv_nsec = (timeout % 1000) * 1000000; |
| 630 | tsp = &ts; |
| 631 | } |
| 632 | |
| 633 | res = VG_(do_syscall4)(__NR_pollsys, (UWord)fds, nfds, (UWord)tsp, 0); |
sewardj | 6caac71 | 2012-08-18 06:45:07 +0000 | [diff] [blame] | 634 | # else |
| 635 | # error "Unknown OS" |
| 636 | # endif |
philippe | 4254584 | 2013-12-05 22:10:55 +0000 | [diff] [blame] | 637 | return res; |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 638 | } |
| 639 | |
| 640 | |
florian | a175ffb | 2014-10-14 21:01:33 +0000 | [diff] [blame] | 641 | /* Performs the readlink operation and puts the result into 'buf'. |
| 642 | Note, that the string in 'buf' is *not* null-terminated. The function |
| 643 | returns the number of characters put into 'buf' or -1 if an error |
| 644 | occurred. */ |
| 645 | SSizeT VG_(readlink) (const HChar* path, HChar* buf, SizeT bufsiz) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 646 | { |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 647 | SysRes res; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 648 | /* res = readlink( path, buf, bufsiz ); */ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 649 | # if defined(VGP_arm64_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 650 | res = VG_(do_syscall4)(__NR_readlinkat, VKI_AT_FDCWD, |
| 651 | (UWord)path, (UWord)buf, bufsiz); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 652 | # elif defined(VGO_linux) || defined(VGO_darwin) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 653 | res = VG_(do_syscall3)(__NR_readlink, (UWord)path, (UWord)buf, bufsiz); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 654 | # elif defined(VGO_solaris) |
| 655 | res = VG_(do_syscall4)(__NR_readlinkat, VKI_AT_FDCWD, (UWord)path, |
| 656 | (UWord)buf, bufsiz); |
| 657 | # else |
| 658 | # error "Unknown OS" |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 659 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 660 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 661 | } |
| 662 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 663 | #if defined(VGO_linux) || defined(VGO_solaris) |
mjw | 495c656 | 2014-08-29 14:28:30 +0000 | [diff] [blame] | 664 | Int VG_(getdents64) (Int fd, struct vki_dirent64 *dirp, UInt count) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 665 | { |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 666 | SysRes res; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 667 | /* res = getdents( fd, dirp, count ); */ |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 668 | # if defined(VGP_amd64_solaris) |
| 669 | /* This silently assumes that dirent64 and dirent on amd64 are same, which |
| 670 | they should always be. */ |
| 671 | res = VG_(do_syscall3)(__NR_getdents, fd, (UWord)dirp, count); |
| 672 | # else |
mjw | 495c656 | 2014-08-29 14:28:30 +0000 | [diff] [blame] | 673 | res = VG_(do_syscall3)(__NR_getdents64, fd, (UWord)dirp, count); |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 674 | # if defined(VGA_mips64) |
| 675 | /* The MIPS64 getdents64() system call is only present in 3.10+ kernels. |
| 676 | If the getdents64() system call is not available fall back to using |
| 677 | getdents() and modify the result to be compatible with getdents64(). */ |
| 678 | if (sr_isError(res) && (sr_Err(res) == VKI_ENOSYS)) { |
| 679 | int r; |
| 680 | res = VG_(do_syscall3)(__NR_getdents, fd, (UWord)dirp, count); |
| 681 | r = sr_Res(res); |
| 682 | if (r > 0) { |
| 683 | char *p; |
| 684 | char type; |
| 685 | union dirents { |
| 686 | struct vki_dirent m; |
| 687 | struct vki_dirent64 d; |
| 688 | } *u; |
| 689 | p = (char *)dirp; |
| 690 | do { |
| 691 | u = (union dirents *)p; |
| 692 | /* This should not happen, but just in case... */ |
| 693 | if (p + u->m.d_reclen > (char *)dirp + r) |
| 694 | break; |
| 695 | /* shuffle the dirent */ |
| 696 | type = *(p + u->m.d_reclen - 1); |
| 697 | VG_(memmove)(u->d.d_name, u->m.d_name, |
| 698 | u->m.d_reclen - 2 |
| 699 | - offsetof(struct vki_dirent, d_name) + 1); |
| 700 | u->d.d_type = type; |
| 701 | p += u->m.d_reclen; |
| 702 | } while (p < (char *)dirp + r); |
| 703 | } |
| 704 | } |
| 705 | # endif |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 706 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 707 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 708 | } |
sewardj | b69cd96 | 2014-09-01 22:26:18 +0000 | [diff] [blame] | 709 | #endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 710 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 711 | /* Check accessibility of a file. Returns zero for access granted, |
| 712 | nonzero otherwise. */ |
njn | 63e5e6e | 2009-05-20 04:22:42 +0000 | [diff] [blame] | 713 | Int VG_(access) ( const HChar* path, Bool irusr, Bool iwusr, Bool ixusr ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 714 | { |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 715 | # if defined(VGO_linux) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 716 | /* Very annoyingly, I cannot find any definition for R_OK et al in |
| 717 | the kernel interfaces. Therefore I reluctantly resort to |
| 718 | hardwiring in these magic numbers that I determined by |
| 719 | experimentation. */ |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 720 | # define VKI_R_OK 4 |
| 721 | # define VKI_W_OK 2 |
| 722 | # define VKI_X_OK 1 |
| 723 | # endif |
| 724 | |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 725 | UWord w = (irusr ? VKI_R_OK : 0) |
| 726 | | (iwusr ? VKI_W_OK : 0) |
| 727 | | (ixusr ? VKI_X_OK : 0); |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 728 | # if defined(VGP_arm64_linux) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 729 | SysRes res = VG_(do_syscall3)(__NR_faccessat, VKI_AT_FDCWD, (UWord)path, w); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 730 | # elif defined(VGO_linux) || defined(VGO_darwin) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 731 | SysRes res = VG_(do_syscall2)(__NR_access, (UWord)path, w); |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 732 | # elif defined(VGO_solaris) |
| 733 | SysRes res = VG_(do_syscall4)(__NR_faccessat, VKI_AT_FDCWD, (UWord)path, |
| 734 | w, 0); |
| 735 | # else |
| 736 | # error "Unknown OS" |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 737 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 738 | return sr_isError(res) ? 1 : 0; |
| 739 | |
| 740 | # if defined(VGO_linux) |
| 741 | # undef VKI_R_OK |
| 742 | # undef VKI_W_OK |
| 743 | # undef VKI_X_OK |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 744 | # endif |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 745 | } |
| 746 | |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 747 | /* |
| 748 | Emulate the normal Unix permissions checking algorithm. |
| 749 | |
| 750 | If owner matches, then use the owner permissions, else |
| 751 | if group matches, then use the group permissions, else |
| 752 | use other permissions. |
| 753 | |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 754 | Note that we can't deal properly with SUID/SGID. By default |
| 755 | (allow_setuid == False), we refuse to run them (otherwise the |
| 756 | executable may misbehave if it doesn't have the permissions it |
| 757 | thinks it does). However, the caller may indicate that setuid |
| 758 | executables are allowed, for example if we are going to exec them |
| 759 | but not trace into them (iow, client sys_execve when |
| 760 | clo_trace_children == False). |
| 761 | |
| 762 | If VKI_EACCES is returned (iow, permission was refused), then |
| 763 | *is_setuid is set to True iff permission was refused because the |
| 764 | executable is setuid. |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 765 | */ |
| 766 | /* returns: 0 = success, non-0 is failure */ |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 767 | Int VG_(check_executable)(/*OUT*/Bool* is_setuid, |
njn | 63e5e6e | 2009-05-20 04:22:42 +0000 | [diff] [blame] | 768 | const HChar* f, Bool allow_setuid) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 769 | { |
sewardj | 4231a85 | 2008-08-19 08:32:03 +0000 | [diff] [blame] | 770 | struct vg_stat st; |
sewardj | 26b8728 | 2006-10-17 12:49:31 +0000 | [diff] [blame] | 771 | SysRes res = VG_(stat)(f, &st); |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 772 | |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 773 | if (is_setuid) |
| 774 | *is_setuid = False; |
| 775 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 776 | if (sr_isError(res)) { |
| 777 | return sr_Err(res); |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 778 | } |
| 779 | |
mjw | d6edbc9 | 2015-02-09 13:27:07 +0000 | [diff] [blame] | 780 | if ( VKI_S_ISDIR (st.mode) ) { |
| 781 | return VKI_EACCES; |
| 782 | } |
| 783 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 784 | if ( (st.mode & (VKI_S_ISUID | VKI_S_ISGID)) && !allow_setuid ) { |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 785 | if (is_setuid) |
| 786 | *is_setuid = True; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 787 | return VKI_EACCES; |
| 788 | } |
| 789 | |
tom | b7c2f9d | 2014-05-22 08:57:06 +0000 | [diff] [blame] | 790 | res = VG_(getxattr)(f, "security.capability", (Addr)0, 0); |
| 791 | if (!sr_isError(res) && !allow_setuid) { |
| 792 | if (is_setuid) |
| 793 | *is_setuid = True; |
| 794 | return VKI_EACCES; |
| 795 | } |
| 796 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 797 | if (VG_(geteuid)() == st.uid) { |
| 798 | if (!(st.mode & VKI_S_IXUSR)) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 799 | return VKI_EACCES; |
| 800 | } else { |
sewardj | 45406ef | 2006-10-18 00:33:46 +0000 | [diff] [blame] | 801 | Int grpmatch = 0; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 802 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 803 | if (VG_(getegid)() == st.gid) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 804 | grpmatch = 1; |
| 805 | else { |
florian | 94086c7 | 2014-09-30 19:26:58 +0000 | [diff] [blame] | 806 | UInt *groups = NULL; |
| 807 | Int ngrp; |
| 808 | |
| 809 | /* Find out # groups, allocate large enough array and fetch groups */ |
| 810 | ngrp = VG_(getgroups)(0, NULL); |
| 811 | if (ngrp != -1) { |
| 812 | groups = VG_(malloc)("check_executable", ngrp * sizeof *groups); |
| 813 | ngrp = VG_(getgroups)(ngrp, groups); |
| 814 | } |
| 815 | |
| 816 | Int i; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 817 | /* ngrp will be -1 if VG_(getgroups) failed. */ |
| 818 | for (i = 0; i < ngrp; i++) { |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 819 | if (groups[i] == st.gid) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 820 | grpmatch = 1; |
| 821 | break; |
| 822 | } |
| 823 | } |
florian | 94086c7 | 2014-09-30 19:26:58 +0000 | [diff] [blame] | 824 | VG_(free)(groups); |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 825 | } |
| 826 | |
| 827 | if (grpmatch) { |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 828 | if (!(st.mode & VKI_S_IXGRP)) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 829 | return VKI_EACCES; |
| 830 | } |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 831 | } else if (!(st.mode & VKI_S_IXOTH)) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 832 | return VKI_EACCES; |
| 833 | } |
| 834 | } |
| 835 | |
| 836 | return 0; |
| 837 | } |
| 838 | |
njn | c4431bf | 2009-01-15 21:29:24 +0000 | [diff] [blame] | 839 | SysRes VG_(pread) ( Int fd, void* buf, Int count, OffT offset ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 840 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 841 | SysRes res; |
philippe | 8050bb7 | 2012-04-13 23:07:29 +0000 | [diff] [blame] | 842 | // on 32 bits platforms, we receive a 32 bits OffT but |
| 843 | // we must extend it to pass a long long 64 bits. |
| 844 | # if defined(VGP_x86_linux) |
| 845 | vg_assert(sizeof(OffT) == 4); |
| 846 | res = VG_(do_syscall5)(__NR_pread64, fd, (UWord)buf, count, |
| 847 | offset, 0); // Little endian long long |
| 848 | return res; |
| 849 | # elif defined(VGP_arm_linux) |
| 850 | vg_assert(sizeof(OffT) == 4); |
| 851 | res = VG_(do_syscall5)(__NR_pread64, fd, (UWord)buf, count, |
| 852 | 0, offset); // Big endian long long |
| 853 | return res; |
| 854 | # elif defined(VGP_ppc32_linux) |
| 855 | vg_assert(sizeof(OffT) == 4); |
| 856 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 857 | 0, // Padding needed on PPC32 |
| 858 | 0, offset); // Big endian long long |
| 859 | return res; |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 860 | # elif defined(VGP_mips32_linux) && (VKI_LITTLE_ENDIAN) |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 861 | vg_assert(sizeof(OffT) == 4); |
| 862 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 863 | 0, offset, 0); |
| 864 | return res; |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 865 | # elif defined(VGP_mips32_linux) && (VKI_BIG_ENDIAN) |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 866 | vg_assert(sizeof(OffT) == 4); |
| 867 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 868 | 0, 0, offset); |
| 869 | return res; |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 870 | # elif defined(VGP_amd64_linux) || defined(VGP_s390x_linux) \ |
| 871 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 872 | || defined(VGP_mips64_linux) || defined(VGP_arm64_linux) |
philippe | 8050bb7 | 2012-04-13 23:07:29 +0000 | [diff] [blame] | 873 | res = VG_(do_syscall4)(__NR_pread64, fd, (UWord)buf, count, offset); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 874 | return res; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 875 | # elif defined(VGP_amd64_darwin) |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 876 | vg_assert(sizeof(OffT) == 8); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 877 | res = VG_(do_syscall4)(__NR_pread_nocancel, fd, (UWord)buf, count, offset); |
| 878 | return res; |
| 879 | # elif defined(VGP_x86_darwin) |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 880 | vg_assert(sizeof(OffT) == 8); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 881 | res = VG_(do_syscall5)(__NR_pread_nocancel, fd, (UWord)buf, count, |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 882 | offset & 0xffffffff, offset >> 32); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 883 | return res; |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 884 | # elif defined(VGP_x86_solaris) |
| 885 | vg_assert(sizeof(OffT) == 4); |
| 886 | res = VG_(do_syscall4)(__NR_pread, fd, (UWord)buf, count, offset); |
| 887 | return res; |
| 888 | # elif defined(VGP_amd64_solaris) |
| 889 | vg_assert(sizeof(OffT) == 8); |
| 890 | res = VG_(do_syscall4)(__NR_pread, fd, (UWord)buf, count, offset); |
| 891 | return res; |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 892 | # else |
| 893 | # error "Unknown platform" |
| 894 | # endif |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 895 | } |
| 896 | |
florian | b985e2d | 2011-09-29 03:03:45 +0000 | [diff] [blame] | 897 | /* Return the name of a directory for temporary files. */ |
| 898 | const HChar *VG_(tmpdir)(void) |
| 899 | { |
| 900 | const HChar *tmpdir; |
| 901 | |
| 902 | tmpdir = VG_(getenv)("TMPDIR"); |
| 903 | if (tmpdir == NULL || *tmpdir == '\0') tmpdir = VG_TMPDIR; |
| 904 | if (tmpdir == NULL || *tmpdir == '\0') tmpdir = "/tmp"; /* fallback */ |
| 905 | |
| 906 | return tmpdir; |
| 907 | } |
| 908 | |
florian | 6037226 | 2014-08-09 21:45:56 +0000 | [diff] [blame] | 909 | static const HChar mkstemp_format[] = "%s/valgrind_%s_%08x"; |
philippe | cc64826 | 2013-05-26 21:09:20 +0000 | [diff] [blame] | 910 | |
| 911 | SizeT VG_(mkstemp_fullname_bufsz) ( SizeT part_of_name_len ) |
| 912 | { |
| 913 | return VG_(strlen)(mkstemp_format) |
| 914 | + VG_(strlen)(VG_(tmpdir)()) - 2 // %s tmpdir |
| 915 | + part_of_name_len - 2 // %s part_of_name |
| 916 | + 8 - 4 // %08x |
| 917 | + 1; // trailing 0 |
| 918 | } |
| 919 | |
| 920 | |
philippe | d47676f | 2014-08-09 11:26:51 +0000 | [diff] [blame] | 921 | Int VG_(mkstemp) ( const HChar* part_of_name, /*OUT*/HChar* fullname ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 922 | { |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 923 | Int n, tries; |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 924 | UInt seed; |
| 925 | SysRes sres; |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 926 | const HChar *tmpdir; |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 927 | |
| 928 | vg_assert(part_of_name); |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 929 | vg_assert(fullname); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 930 | n = VG_(strlen)(part_of_name); |
| 931 | vg_assert(n > 0 && n < 100); |
| 932 | |
| 933 | seed = (VG_(getpid)() << 9) ^ VG_(getppid)(); |
| 934 | |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 935 | /* Determine sensible location for temporary files */ |
florian | b985e2d | 2011-09-29 03:03:45 +0000 | [diff] [blame] | 936 | tmpdir = VG_(tmpdir)(); |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 937 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 938 | tries = 0; |
| 939 | while (True) { |
sewardj | 824b397 | 2011-05-09 22:42:06 +0000 | [diff] [blame] | 940 | if (tries++ > 10) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 941 | return -1; |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 942 | VG_(sprintf)( fullname, mkstemp_format, |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 943 | tmpdir, part_of_name, VG_(random)( &seed )); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 944 | if (0) |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 945 | VG_(printf)("VG_(mkstemp): trying: %s\n", fullname); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 946 | |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 947 | sres = VG_(open)(fullname, |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 948 | VKI_O_CREAT|VKI_O_RDWR|VKI_O_EXCL|VKI_O_TRUNC, |
| 949 | VKI_S_IRUSR|VKI_S_IWUSR); |
sewardj | 80fc03b | 2011-09-26 16:46:04 +0000 | [diff] [blame] | 950 | if (sr_isError(sres)) { |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 951 | VG_(umsg)("VG_(mkstemp): failed to create temp file: %s\n", fullname); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 952 | continue; |
sewardj | 80fc03b | 2011-09-26 16:46:04 +0000 | [diff] [blame] | 953 | } |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 954 | /* VG_(safe_fd) doesn't return if it fails. */ |
florian | 87c8abb | 2014-11-09 16:15:23 +0000 | [diff] [blame] | 955 | return VG_(safe_fd)( sr_Res(sres) ); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 956 | } |
| 957 | /* NOTREACHED */ |
| 958 | } |
| 959 | |
| 960 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 961 | /* --------------------------------------------------------------------- |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 962 | Socket-related stuff. |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 963 | ------------------------------------------------------------------ */ |
| 964 | |
| 965 | static |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 966 | 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] | 967 | |
| 968 | static |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 969 | Int my_connect ( Int sockfd, struct vki_sockaddr_in* serv_addr, Int addrlen ); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 970 | |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 971 | UInt VG_(htonl) ( UInt x ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 972 | { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 973 | # if defined(VG_BIGENDIAN) |
| 974 | return x; |
| 975 | # else |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 976 | return |
| 977 | (((x >> 24) & 0xFF) << 0) | (((x >> 16) & 0xFF) << 8) |
| 978 | | (((x >> 8) & 0xFF) << 16) | (((x >> 0) & 0xFF) << 24); |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 979 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 980 | } |
| 981 | |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 982 | UInt VG_(ntohl) ( UInt x ) |
| 983 | { |
| 984 | # if defined(VG_BIGENDIAN) |
| 985 | return x; |
| 986 | # else |
| 987 | return |
| 988 | (((x >> 24) & 0xFF) << 0) | (((x >> 16) & 0xFF) << 8) |
| 989 | | (((x >> 8) & 0xFF) << 16) | (((x >> 0) & 0xFF) << 24); |
| 990 | # endif |
| 991 | } |
| 992 | |
| 993 | UShort VG_(htons) ( UShort x ) |
| 994 | { |
| 995 | # if defined(VG_BIGENDIAN) |
| 996 | return x; |
| 997 | # else |
| 998 | return |
| 999 | (((x >> 8) & 0xFF) << 0) | (((x >> 0) & 0xFF) << 8); |
| 1000 | # endif |
| 1001 | } |
| 1002 | |
| 1003 | UShort VG_(ntohs) ( UShort x ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1004 | { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 1005 | # if defined(VG_BIGENDIAN) |
| 1006 | return x; |
| 1007 | # else |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1008 | return |
| 1009 | (((x >> 8) & 0xFF) << 0) | (((x >> 0) & 0xFF) << 8); |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 1010 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1011 | } |
| 1012 | |
| 1013 | |
| 1014 | /* The main function. |
| 1015 | |
| 1016 | Supplied string contains either an ip address "192.168.0.1" or |
| 1017 | an ip address and port pair, "192.168.0.1:1500". Parse these, |
| 1018 | and return: |
| 1019 | -1 if there is a parse error |
| 1020 | -2 if no parse error, but specified host:port cannot be opened |
| 1021 | the relevant file (socket) descriptor, otherwise. |
| 1022 | is used. |
| 1023 | */ |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1024 | Int VG_(connect_via_socket)( const HChar* str ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1025 | { |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1026 | # if defined(VGO_linux) || defined(VGO_darwin) || defined(VGO_solaris) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1027 | Int sd, res; |
| 1028 | struct vki_sockaddr_in servAddr; |
| 1029 | UInt ip = 0; |
| 1030 | UShort port = VG_CLO_DEFAULT_LOGPORT; |
| 1031 | Bool ok = parse_inet_addr_and_port(str, &ip, &port); |
| 1032 | if (!ok) |
| 1033 | return -1; |
| 1034 | |
| 1035 | //if (0) |
| 1036 | // VG_(printf)("ip = %d.%d.%d.%d, port %d\n", |
| 1037 | // (ip >> 24) & 0xFF, (ip >> 16) & 0xFF, |
| 1038 | // (ip >> 8) & 0xFF, ip & 0xFF, |
| 1039 | // (UInt)port ); |
| 1040 | |
| 1041 | servAddr.sin_family = VKI_AF_INET; |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 1042 | servAddr.sin_addr.s_addr = VG_(htonl)(ip); |
| 1043 | servAddr.sin_port = VG_(htons)(port); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1044 | |
| 1045 | /* create socket */ |
njn | 0cd5d97 | 2009-05-22 02:00:27 +0000 | [diff] [blame] | 1046 | sd = VG_(socket)(VKI_AF_INET, VKI_SOCK_STREAM, 0 /* IPPROTO_IP ? */); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1047 | if (sd < 0) { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 1048 | /* this shouldn't happen ... nevertheless */ |
| 1049 | return -2; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1050 | } |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 1051 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1052 | /* connect to server */ |
njn | b143b27 | 2009-05-22 00:47:08 +0000 | [diff] [blame] | 1053 | res = my_connect(sd, &servAddr, sizeof(servAddr)); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1054 | if (res < 0) { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 1055 | /* connection failed */ |
| 1056 | return -2; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1057 | } |
| 1058 | |
| 1059 | return sd; |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1060 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1061 | # else |
| 1062 | # error "Unknown OS" |
| 1063 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1064 | } |
| 1065 | |
| 1066 | |
| 1067 | /* Let d = one or more digits. Accept either: |
| 1068 | d.d.d.d or d.d.d.d:d |
| 1069 | */ |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1070 | 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] | 1071 | { |
| 1072 | # define GET_CH ((*str) ? (*str++) : 0) |
| 1073 | UInt ipa, i, j, c, any; |
| 1074 | ipa = 0; |
| 1075 | for (i = 0; i < 4; i++) { |
| 1076 | j = 0; |
| 1077 | any = 0; |
| 1078 | while (1) { |
| 1079 | c = GET_CH; |
| 1080 | if (c < '0' || c > '9') break; |
| 1081 | j = 10 * j + (int)(c - '0'); |
| 1082 | any = 1; |
| 1083 | } |
| 1084 | if (any == 0 || j > 255) goto syntaxerr; |
| 1085 | ipa = (ipa << 8) + j; |
| 1086 | if (i <= 2 && c != '.') goto syntaxerr; |
| 1087 | } |
| 1088 | if (c == 0 || c == ':') |
| 1089 | *ip_addr = ipa; |
| 1090 | if (c == 0) goto ok; |
| 1091 | if (c != ':') goto syntaxerr; |
| 1092 | j = 0; |
| 1093 | any = 0; |
| 1094 | while (1) { |
| 1095 | c = GET_CH; |
| 1096 | if (c < '0' || c > '9') break; |
| 1097 | j = j * 10 + (int)(c - '0'); |
| 1098 | any = 1; |
| 1099 | if (j > 65535) goto syntaxerr; |
| 1100 | } |
| 1101 | if (any == 0 || c != 0) goto syntaxerr; |
| 1102 | if (j < 1024) goto syntaxerr; |
| 1103 | *port = (UShort)j; |
| 1104 | ok: |
| 1105 | return 1; |
| 1106 | syntaxerr: |
| 1107 | return 0; |
| 1108 | # undef GET_CH |
| 1109 | } |
| 1110 | |
njn | 0cd5d97 | 2009-05-22 02:00:27 +0000 | [diff] [blame] | 1111 | // GrP fixme safe_fd? |
| 1112 | Int VG_(socket) ( Int domain, Int type, Int protocol ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1113 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1114 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1115 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1116 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1117 | SysRes res; |
| 1118 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1119 | args[0] = domain; |
| 1120 | args[1] = type; |
| 1121 | args[2] = protocol; |
| 1122 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SOCKET, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1123 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 1124 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1125 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1126 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 1127 | || defined(VGP_arm64_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 1128 | SysRes res; |
| 1129 | res = VG_(do_syscall3)(__NR_socket, domain, type, protocol ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1130 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1131 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1132 | # elif defined(VGO_darwin) |
| 1133 | SysRes res; |
| 1134 | res = VG_(do_syscall3)(__NR_socket, domain, type, protocol); |
| 1135 | if (!sr_isError(res)) { |
| 1136 | // Set SO_NOSIGPIPE so write() returns EPIPE instead of raising SIGPIPE |
| 1137 | Int optval = 1; |
| 1138 | SysRes res2; |
| 1139 | res2 = VG_(do_syscall5)(__NR_setsockopt, sr_Res(res), VKI_SOL_SOCKET, |
| 1140 | VKI_SO_NOSIGPIPE, (UWord)&optval, |
| 1141 | sizeof(optval)); |
| 1142 | // ignore setsockopt() error |
| 1143 | } |
| 1144 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1145 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1146 | # elif defined(VGO_solaris) |
| 1147 | /* XXX There doesn't seem to be an easy way to convince the send syscall to |
| 1148 | only return EPIPE instead of raising SIGPIPE. EPIPE is only returned if |
| 1149 | SM_KERNEL is set on the socket. Without serious hackery it looks we |
| 1150 | can't set this flag. |
| 1151 | |
| 1152 | Should we wrap the send syscall below into sigprocmask calls to block |
| 1153 | SIGPIPE? |
| 1154 | */ |
| 1155 | SysRes res; |
| 1156 | res = VG_(do_syscall5)(__NR_so_socket, domain, type, protocol, |
| 1157 | 0 /*devpath*/, VKI_SOV_DEFAULT /*version*/); |
| 1158 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1159 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1160 | # else |
| 1161 | # error "Unknown arch" |
| 1162 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1163 | } |
| 1164 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1165 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1166 | static |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 1167 | Int my_connect ( Int sockfd, struct vki_sockaddr_in* serv_addr, Int addrlen ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1168 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1169 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1170 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1171 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1172 | SysRes res; |
| 1173 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1174 | args[0] = sockfd; |
| 1175 | args[1] = (UWord)serv_addr; |
| 1176 | args[2] = addrlen; |
| 1177 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_CONNECT, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1178 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 1179 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1180 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1181 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 1182 | || defined(VGP_arm64_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 1183 | SysRes res; |
| 1184 | res = VG_(do_syscall3)(__NR_connect, sockfd, (UWord)serv_addr, addrlen); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1185 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1186 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1187 | # elif defined(VGO_darwin) |
| 1188 | SysRes res; |
| 1189 | res = VG_(do_syscall3)(__NR_connect_nocancel, |
| 1190 | sockfd, (UWord)serv_addr, addrlen); |
| 1191 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1192 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1193 | # elif defined(VGO_solaris) |
| 1194 | SysRes res; |
| 1195 | res = VG_(do_syscall4)(__NR_connect, sockfd, (UWord)serv_addr, addrlen, |
| 1196 | VKI_SOV_DEFAULT /*version*/); |
| 1197 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1198 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1199 | # else |
| 1200 | # error "Unknown arch" |
| 1201 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1202 | } |
| 1203 | |
florian | dbb3584 | 2012-10-27 18:39:11 +0000 | [diff] [blame] | 1204 | Int VG_(write_socket)( Int sd, const void *msg, Int count ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1205 | { |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1206 | /* This is actually send(). */ |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1207 | |
| 1208 | /* For Linux, VKI_MSG_NOSIGNAL is a request not to send SIGPIPE on |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1209 | errors on stream oriented sockets when the other end breaks the |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1210 | connection. The EPIPE error is still returned. |
| 1211 | |
| 1212 | For Darwin, VG_(socket)() sets SO_NOSIGPIPE to get EPIPE instead of |
| 1213 | SIGPIPE */ |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1214 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1215 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1216 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1217 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1218 | SysRes res; |
| 1219 | UWord args[4]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1220 | args[0] = sd; |
| 1221 | args[1] = (UWord)msg; |
| 1222 | args[2] = count; |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1223 | args[3] = VKI_MSG_NOSIGNAL; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1224 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SEND, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1225 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 1226 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1227 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1228 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 1229 | || defined(VGP_arm64_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 1230 | SysRes res; |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1231 | res = VG_(do_syscall6)(__NR_sendto, sd, (UWord)msg, |
| 1232 | count, VKI_MSG_NOSIGNAL, 0,0); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1233 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1234 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1235 | # elif defined(VGP_x86_darwin) || defined(VGP_amd64_darwin) |
| 1236 | SysRes res; |
| 1237 | res = VG_(do_syscall3)(__NR_write_nocancel, sd, (UWord)msg, count); |
| 1238 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1239 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1240 | # elif defined(VGO_solaris) |
| 1241 | SysRes res; |
| 1242 | res = VG_(do_syscall4)(__NR_send, sd, (UWord)msg, count, 0 /*flags*/); |
| 1243 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1244 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1245 | # else |
| 1246 | # error "Unknown platform" |
| 1247 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1248 | } |
| 1249 | |
| 1250 | Int VG_(getsockname) ( Int sd, struct vki_sockaddr *name, Int *namelen) |
| 1251 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1252 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1253 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1254 | || defined(VGP_s390x_linux) \ |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1255 | || defined(VGP_mips32_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1256 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1257 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1258 | args[0] = sd; |
| 1259 | args[1] = (UWord)name; |
| 1260 | args[2] = (UWord)namelen; |
| 1261 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETSOCKNAME, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1262 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1263 | |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 1264 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 1265 | || defined(VGP_mips64_linux) || defined(VGP_arm64_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1266 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1267 | res = VG_(do_syscall3)( __NR_getsockname, |
| 1268 | (UWord)sd, (UWord)name, (UWord)namelen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1269 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1270 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1271 | # elif defined(VGO_darwin) |
| 1272 | SysRes res; |
| 1273 | res = VG_(do_syscall3)( __NR_getsockname, |
| 1274 | (UWord)sd, (UWord)name, (UWord)namelen ); |
| 1275 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1276 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1277 | # elif defined(VGO_solaris) |
| 1278 | SysRes res; |
| 1279 | res = VG_(do_syscall4)(__NR_getsockname, sd, (UWord)name, (UWord)namelen, |
| 1280 | VKI_SOV_DEFAULT /*version*/); |
| 1281 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1282 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1283 | # else |
| 1284 | # error "Unknown platform" |
| 1285 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1286 | } |
| 1287 | |
| 1288 | Int VG_(getpeername) ( Int sd, struct vki_sockaddr *name, Int *namelen) |
| 1289 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1290 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1291 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1292 | || defined(VGP_s390x_linux) \ |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1293 | || defined(VGP_mips32_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1294 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1295 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1296 | args[0] = sd; |
| 1297 | args[1] = (UWord)name; |
| 1298 | args[2] = (UWord)namelen; |
| 1299 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETPEERNAME, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1300 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1301 | |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 1302 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 1303 | || defined(VGP_mips64_linux) || defined(VGP_arm64_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1304 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1305 | res = VG_(do_syscall3)( __NR_getpeername, |
| 1306 | (UWord)sd, (UWord)name, (UWord)namelen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1307 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1308 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1309 | # elif defined(VGO_darwin) |
| 1310 | SysRes res; |
| 1311 | res = VG_(do_syscall3)( __NR_getpeername, |
| 1312 | (UWord)sd, (UWord)name, (UWord)namelen ); |
| 1313 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1314 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1315 | # elif defined(VGO_solaris) |
| 1316 | SysRes res; |
| 1317 | res = VG_(do_syscall4)(__NR_getpeername, sd, (UWord)name, (UWord)namelen, |
| 1318 | VKI_SOV_DEFAULT /*version*/); |
| 1319 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1320 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1321 | # else |
| 1322 | # error "Unknown platform" |
| 1323 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1324 | } |
| 1325 | |
| 1326 | Int VG_(getsockopt) ( Int sd, Int level, Int optname, void *optval, |
| 1327 | Int *optlen) |
| 1328 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1329 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1330 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1331 | || defined(VGP_s390x_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1332 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1333 | UWord args[5]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1334 | args[0] = sd; |
| 1335 | args[1] = level; |
| 1336 | args[2] = optname; |
| 1337 | args[3] = (UWord)optval; |
| 1338 | args[4] = (UWord)optlen; |
| 1339 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETSOCKOPT, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1340 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1341 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1342 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1343 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 1344 | || defined(VGP_arm64_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1345 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1346 | res = VG_(do_syscall5)( __NR_getsockopt, |
| 1347 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1348 | (UWord)optval, (UWord)optlen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1349 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1350 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1351 | # elif defined(VGO_darwin) |
| 1352 | SysRes res; |
| 1353 | res = VG_(do_syscall5)( __NR_getsockopt, |
| 1354 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1355 | (UWord)optval, (UWord)optlen ); |
| 1356 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1357 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1358 | # elif defined(VGO_solaris) |
| 1359 | SysRes res; |
| 1360 | res = VG_(do_syscall6)(__NR_getsockopt, sd, level, optname, (UWord)optval, |
| 1361 | (UWord)optlen, VKI_SOV_DEFAULT /*version*/); |
| 1362 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1363 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1364 | # else |
| 1365 | # error "Unknown platform" |
| 1366 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1367 | } |
| 1368 | |
| 1369 | |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1370 | Int VG_(setsockopt) ( Int sd, Int level, Int optname, void *optval, |
| 1371 | Int optlen) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1372 | { |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1373 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1374 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1375 | || defined(VGP_s390x_linux) |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1376 | SysRes res; |
| 1377 | UWord args[5]; |
| 1378 | args[0] = sd; |
| 1379 | args[1] = level; |
| 1380 | args[2] = optname; |
| 1381 | args[3] = (UWord)optval; |
| 1382 | args[4] = (UWord)optlen; |
| 1383 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SETSOCKOPT, (UWord)&args); |
| 1384 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1385 | |
| 1386 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1387 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 1388 | || defined(VGP_arm64_linux) |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1389 | SysRes res; |
| 1390 | res = VG_(do_syscall5)( __NR_setsockopt, |
| 1391 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1392 | (UWord)optval, (UWord)optlen ); |
| 1393 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1394 | |
| 1395 | # elif defined(VGO_darwin) |
| 1396 | SysRes res; |
| 1397 | res = VG_(do_syscall5)( __NR_setsockopt, |
| 1398 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1399 | (UWord)optval, (UWord)optlen ); |
| 1400 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1401 | |
sewardj | 8eb8bab | 2015-07-21 14:44:28 +0000 | [diff] [blame] | 1402 | # elif defined(VGO_solaris) |
| 1403 | SysRes res; |
| 1404 | res = VG_(do_syscall6)( __NR_setsockopt, |
| 1405 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1406 | (UWord)optval, (UWord)optlen, |
| 1407 | VKI_SOV_DEFAULT /*version*/ ); |
| 1408 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1409 | |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1410 | # else |
| 1411 | # error "Unknown platform" |
| 1412 | # endif |
| 1413 | } |
| 1414 | |
| 1415 | |
florian | 6bd9dc1 | 2012-11-23 16:17:43 +0000 | [diff] [blame] | 1416 | const HChar *VG_(basename)(const HChar *path) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1417 | { |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1418 | static HChar *buf = NULL; |
| 1419 | static SizeT buf_len = 0; |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1420 | const HChar *p, *end; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1421 | |
| 1422 | if (path == NULL || |
| 1423 | 0 == VG_(strcmp)(path, "")) |
| 1424 | { |
| 1425 | return "."; |
| 1426 | } |
| 1427 | |
| 1428 | p = path + VG_(strlen)(path); |
| 1429 | while (p > path && *p == '/') { |
| 1430 | // skip all trailing '/' |
| 1431 | p--; |
| 1432 | } |
| 1433 | |
| 1434 | if (p == path && *p == '/') return "/"; // all slashes |
| 1435 | |
| 1436 | end = p; |
| 1437 | |
| 1438 | while (p > path && *p != '/') { |
| 1439 | // now skip non '/' |
| 1440 | p--; |
| 1441 | } |
| 1442 | |
| 1443 | if (*p == '/') p++; |
| 1444 | |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1445 | SizeT need = end-p+1 + 1; |
| 1446 | if (need > buf_len) { |
| 1447 | buf_len = (buf_len == 0) ? 500 : need; |
| 1448 | buf = VG_(realloc)("basename", buf, buf_len); |
| 1449 | } |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1450 | VG_(strncpy)(buf, p, end-p+1); |
| 1451 | buf[end-p+1] = '\0'; |
| 1452 | |
| 1453 | return buf; |
| 1454 | } |
| 1455 | |
| 1456 | |
florian | 6bd9dc1 | 2012-11-23 16:17:43 +0000 | [diff] [blame] | 1457 | const HChar *VG_(dirname)(const HChar *path) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1458 | { |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1459 | static HChar *buf = NULL; |
| 1460 | static SizeT buf_len = 0; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1461 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1462 | const HChar *p; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1463 | |
| 1464 | if (path == NULL || |
| 1465 | 0 == VG_(strcmp)(path, "") || |
| 1466 | 0 == VG_(strcmp)(path, "/")) |
| 1467 | { |
| 1468 | return "."; |
| 1469 | } |
| 1470 | |
| 1471 | p = path + VG_(strlen)(path); |
| 1472 | while (p > path && *p == '/') { |
| 1473 | // skip all trailing '/' |
| 1474 | p--; |
| 1475 | } |
| 1476 | |
| 1477 | while (p > path && *p != '/') { |
| 1478 | // now skip non '/' |
| 1479 | p--; |
| 1480 | } |
| 1481 | |
| 1482 | if (p == path) { |
| 1483 | if (*p == '/') return "/"; // all slashes |
| 1484 | else return "."; // no slashes |
| 1485 | } |
| 1486 | |
| 1487 | while (p > path && *p == '/') { |
| 1488 | // skip '/' again |
| 1489 | p--; |
| 1490 | } |
| 1491 | |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1492 | SizeT need = p-path+1 + 1; |
| 1493 | if (need > buf_len) { |
| 1494 | buf_len = (buf_len == 0) ? 500 : need; |
| 1495 | buf = VG_(realloc)("dirname", buf, buf_len); |
| 1496 | } |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1497 | VG_(strncpy)(buf, path, p-path+1); |
| 1498 | buf[p-path+1] = '\0'; |
| 1499 | |
| 1500 | return buf; |
| 1501 | } |
| 1502 | |
| 1503 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1504 | /*--------------------------------------------------------------------*/ |
| 1505 | /*--- end ---*/ |
| 1506 | /*--------------------------------------------------------------------*/ |