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 | 0f157dd | 2013-10-18 14:27:36 +0000 | [diff] [blame] | 11 | Copyright (C) 2000-2013 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, |
njn | f845f8f | 2005-06-23 02:26:47 +0000 | [diff] [blame] | 74 | or if it doesn't exist, we return False. */ |
| 75 | Bool VG_(resolve_filename) ( Int fd, HChar* buf, Int n_buf ) |
njn | ae7359b | 2005-06-19 21:10:42 +0000 | [diff] [blame] | 76 | { |
njn | 81b975c | 2009-04-28 05:35:53 +0000 | [diff] [blame] | 77 | # if defined(VGO_linux) |
njn | ae7359b | 2005-06-19 21:10:42 +0000 | [diff] [blame] | 78 | HChar tmp[64]; |
njn | ae7359b | 2005-06-19 21:10:42 +0000 | [diff] [blame] | 79 | VG_(sprintf)(tmp, "/proc/self/fd/%d", fd); |
njn | f845f8f | 2005-06-23 02:26:47 +0000 | [diff] [blame] | 80 | VG_(memset)(buf, 0, n_buf); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 81 | if (VG_(readlink)(tmp, buf, n_buf) > 0 && buf[0] == '/') |
njn | f845f8f | 2005-06-23 02:26:47 +0000 | [diff] [blame] | 82 | return True; |
| 83 | else |
| 84 | return False; |
njn | dad944a | 2009-05-04 05:55:46 +0000 | [diff] [blame] | 85 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 86 | # elif defined(VGO_darwin) |
| 87 | HChar tmp[VKI_MAXPATHLEN+1]; |
| 88 | if (0 == VG_(fcntl)(fd, VKI_F_GETPATH, (UWord)tmp)) { |
| 89 | if (n_buf > 0) { |
| 90 | VG_(strncpy)( buf, tmp, n_buf < sizeof(tmp) ? n_buf : sizeof(tmp) ); |
| 91 | buf[n_buf-1] = 0; |
| 92 | } |
| 93 | if (tmp[0] == '/') return True; |
| 94 | } |
| 95 | return False; |
| 96 | |
njn | 81b975c | 2009-04-28 05:35:53 +0000 | [diff] [blame] | 97 | # else |
njn | dad944a | 2009-05-04 05:55:46 +0000 | [diff] [blame] | 98 | # error Unknown OS |
njn | 81b975c | 2009-04-28 05:35:53 +0000 | [diff] [blame] | 99 | # endif |
njn | ae7359b | 2005-06-19 21:10:42 +0000 | [diff] [blame] | 100 | } |
| 101 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 102 | SysRes VG_(mknod) ( const HChar* pathname, Int mode, UWord dev ) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 103 | { |
philippe | 0eb0d5a | 2014-02-11 23:50:16 +0000 | [diff] [blame] | 104 | # if defined(VGP_arm64_linux) |
| 105 | /* ARM64 wants to use __NR_mknodat rather than __NR_mknod. */ |
| 106 | SysRes res = VG_(do_syscall4)(__NR_mknodat, |
| 107 | VKI_AT_FDCWD, (UWord)pathname, mode, dev); |
| 108 | # elif defined(VGO_linux) || defined(VGO_darwin) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 109 | SysRes res = VG_(do_syscall3)(__NR_mknod, |
| 110 | (UWord)pathname, mode, dev); |
| 111 | # else |
| 112 | # error Unknown OS |
| 113 | # endif |
| 114 | return res; |
| 115 | } |
| 116 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 117 | SysRes VG_(open) ( const HChar* pathname, Int flags, Int mode ) |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 118 | { |
| 119 | # if defined(VGP_arm64_linux) |
| 120 | /* ARM64 wants to use __NR_openat rather than __NR_open. */ |
| 121 | SysRes res = VG_(do_syscall4)(__NR_openat, |
| 122 | VKI_AT_FDCWD, (UWord)pathname, flags, mode); |
| 123 | # elif defined(VGO_linux) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 124 | SysRes res = VG_(do_syscall3)(__NR_open, |
| 125 | (UWord)pathname, flags, mode); |
| 126 | # elif defined(VGO_darwin) |
| 127 | SysRes res = VG_(do_syscall3)(__NR_open_nocancel, |
| 128 | (UWord)pathname, flags, mode); |
| 129 | # else |
| 130 | # error Unknown OS |
| 131 | # endif |
sewardj | 9264559 | 2005-07-23 09:18:34 +0000 | [diff] [blame] | 132 | return res; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 133 | } |
| 134 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 135 | Int VG_(fd_open) (const HChar* pathname, Int flags, Int mode) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 136 | { |
| 137 | SysRes sr; |
| 138 | sr = VG_(open) (pathname, flags, mode); |
| 139 | if (sr_isError (sr)) |
| 140 | return -1; |
| 141 | else |
| 142 | return sr_Res (sr); |
| 143 | } |
| 144 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 145 | void VG_(close) ( Int fd ) |
| 146 | { |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 147 | /* Hmm. Return value is not checked. That's uncool. */ |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 148 | # if defined(VGO_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 149 | (void)VG_(do_syscall1)(__NR_close, fd); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 150 | # elif defined(VGO_darwin) |
| 151 | (void)VG_(do_syscall1)(__NR_close_nocancel, fd); |
| 152 | # else |
| 153 | # error Unknown OS |
| 154 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | Int VG_(read) ( Int fd, void* buf, Int count) |
| 158 | { |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 159 | Int ret; |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 160 | # if defined(VGO_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 161 | SysRes res = VG_(do_syscall3)(__NR_read, fd, (UWord)buf, count); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 162 | # elif defined(VGO_darwin) |
| 163 | SysRes res = VG_(do_syscall3)(__NR_read_nocancel, fd, (UWord)buf, count); |
| 164 | # else |
| 165 | # error Unknown OS |
| 166 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 167 | if (sr_isError(res)) { |
| 168 | ret = - (Int)(Word)sr_Err(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 169 | vg_assert(ret < 0); |
| 170 | } else { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 171 | ret = (Int)(Word)sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 172 | vg_assert(ret >= 0); |
| 173 | } |
| 174 | return ret; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | Int VG_(write) ( Int fd, const void* buf, Int count) |
| 178 | { |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 179 | Int ret; |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 180 | # if defined(VGO_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 181 | SysRes res = VG_(do_syscall3)(__NR_write, fd, (UWord)buf, count); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 182 | # elif defined(VGO_darwin) |
| 183 | SysRes res = VG_(do_syscall3)(__NR_write_nocancel, fd, (UWord)buf, count); |
| 184 | # else |
| 185 | # error "Unknown OS" |
| 186 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 187 | if (sr_isError(res)) { |
| 188 | ret = - (Int)(Word)sr_Err(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 189 | vg_assert(ret < 0); |
| 190 | } else { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 191 | ret = (Int)(Word)sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 192 | vg_assert(ret >= 0); |
| 193 | } |
| 194 | return ret; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 195 | } |
| 196 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 197 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 198 | Int VG_(pipe) ( Int fd[2] ) |
| 199 | { |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 200 | # if defined(VGP_mips32_linux) || defined(VGP_mips64_linux) |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 201 | /* __NR_pipe has a strange return convention on mips32-linux. */ |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 202 | SysRes res = VG_(do_syscall1)(__NR_pipe, (UWord)fd); |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 203 | if (!sr_isError(res)) { |
| 204 | fd[0] = (Int)sr_Res(res); |
| 205 | fd[1] = (Int)sr_ResEx(res); |
| 206 | return 0; |
| 207 | } else { |
| 208 | return -1; |
| 209 | } |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 210 | # elif defined(VGP_arm64_linux) |
| 211 | SysRes res = VG_(do_syscall2)(__NR_pipe2, (UWord)fd, 0); |
| 212 | return sr_isError(res) ? -1 : 0; |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 213 | # elif defined(VGO_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 214 | SysRes res = VG_(do_syscall1)(__NR_pipe, (UWord)fd); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 215 | return sr_isError(res) ? -1 : 0; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 216 | # elif defined(VGO_darwin) |
| 217 | /* __NR_pipe is UX64, so produces a double-word result */ |
| 218 | SysRes res = VG_(do_syscall0)(__NR_pipe); |
| 219 | if (!sr_isError(res)) { |
| 220 | fd[0] = (Int)sr_Res(res); |
| 221 | fd[1] = (Int)sr_ResHI(res); |
| 222 | } |
| 223 | return sr_isError(res) ? -1 : 0; |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 224 | # else |
| 225 | # error "Unknown OS" |
| 226 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 227 | } |
| 228 | |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 229 | Off64T VG_(lseek) ( Int fd, Off64T offset, Int whence ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 230 | { |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 231 | # if defined(VGO_linux) || defined(VGP_amd64_darwin) |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 232 | # if defined(__NR__llseek) |
| 233 | Off64T result; |
| 234 | SysRes res = VG_(do_syscall5)(__NR__llseek, fd, |
| 235 | offset >> 32, offset & 0xffffffff, |
tom | f9b1d73 | 2011-07-13 10:05:24 +0000 | [diff] [blame] | 236 | (UWord)&result, whence); |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 237 | return sr_isError(res) ? (-1) : result; |
| 238 | # else |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 239 | SysRes res = VG_(do_syscall3)(__NR_lseek, fd, offset, whence); |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 240 | vg_assert(sizeof(Off64T) == sizeof(Word)); |
| 241 | return sr_isError(res) ? (-1) : sr_Res(res); |
| 242 | # endif |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 243 | # elif defined(VGP_x86_darwin) |
| 244 | SysRes res = VG_(do_syscall4)(__NR_lseek, fd, |
| 245 | offset & 0xffffffff, offset >> 32, whence); |
tom | c17c6ef | 2011-07-13 09:02:14 +0000 | [diff] [blame] | 246 | return sr_isError(res) ? (-1) : sr_Res(res); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 247 | # else |
| 248 | # error "Unknown plat" |
| 249 | # endif |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 250 | /* if you change the error-reporting conventions of this, also |
philippe | 8050bb7 | 2012-04-13 23:07:29 +0000 | [diff] [blame] | 251 | change all usage points. */ |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 252 | } |
| 253 | |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 254 | |
| 255 | /* stat/fstat support. It's uggerly. We have impedance-match into a |
| 256 | 'struct vg_stat' in order to have a single structure that callers |
| 257 | can use consistently on all platforms. */ |
| 258 | |
| 259 | #define TRANSLATE_TO_vg_stat(_p_vgstat, _p_vkistat) \ |
| 260 | do { \ |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 261 | (_p_vgstat)->dev = (ULong)( (_p_vkistat)->st_dev ); \ |
| 262 | (_p_vgstat)->ino = (ULong)( (_p_vkistat)->st_ino ); \ |
| 263 | (_p_vgstat)->nlink = (ULong)( (_p_vkistat)->st_nlink ); \ |
| 264 | (_p_vgstat)->mode = (UInt) ( (_p_vkistat)->st_mode ); \ |
| 265 | (_p_vgstat)->uid = (UInt) ( (_p_vkistat)->st_uid ); \ |
| 266 | (_p_vgstat)->gid = (UInt) ( (_p_vkistat)->st_gid ); \ |
| 267 | (_p_vgstat)->rdev = (ULong)( (_p_vkistat)->st_rdev ); \ |
| 268 | (_p_vgstat)->size = (Long) ( (_p_vkistat)->st_size ); \ |
| 269 | (_p_vgstat)->blksize = (ULong)( (_p_vkistat)->st_blksize ); \ |
| 270 | (_p_vgstat)->blocks = (ULong)( (_p_vkistat)->st_blocks ); \ |
| 271 | (_p_vgstat)->atime = (ULong)( (_p_vkistat)->st_atime ); \ |
| 272 | (_p_vgstat)->atime_nsec = (ULong)( (_p_vkistat)->st_atime_nsec ); \ |
| 273 | (_p_vgstat)->mtime = (ULong)( (_p_vkistat)->st_mtime ); \ |
| 274 | (_p_vgstat)->mtime_nsec = (ULong)( (_p_vkistat)->st_mtime_nsec ); \ |
| 275 | (_p_vgstat)->ctime = (ULong)( (_p_vkistat)->st_ctime ); \ |
| 276 | (_p_vgstat)->ctime_nsec = (ULong)( (_p_vkistat)->st_ctime_nsec ); \ |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 277 | } while (0) |
| 278 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 279 | SysRes VG_(stat) ( const HChar* file_name, struct vg_stat* vgbuf ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 280 | { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 281 | SysRes res; |
| 282 | VG_(memset)(vgbuf, 0, sizeof(*vgbuf)); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 283 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 284 | # if defined(VGO_linux) || defined(VGO_darwin) |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 285 | /* First try with stat64. If that doesn't work out, fall back to |
| 286 | the vanilla version. */ |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 287 | # if defined(__NR_stat64) |
| 288 | { struct vki_stat64 buf64; |
| 289 | res = VG_(do_syscall2)(__NR_stat64, (UWord)file_name, (UWord)&buf64); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 290 | if (!(sr_isError(res) && sr_Err(res) == VKI_ENOSYS)) { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 291 | /* Success, or any failure except ENOSYS */ |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 292 | if (!sr_isError(res)) |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 293 | TRANSLATE_TO_vg_stat(vgbuf, &buf64); |
| 294 | return res; |
| 295 | } |
| 296 | } |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 297 | # endif /* defined(__NR_stat64) */ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 298 | /* This is the fallback ("vanilla version"). */ |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 299 | { struct vki_stat buf; |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 300 | # if defined(VGP_arm64_linux) |
| 301 | res = VG_(do_syscall3)(__NR3264_fstatat, VKI_AT_FDCWD, |
| 302 | (UWord)file_name, (UWord)&buf); |
| 303 | # else |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 304 | res = VG_(do_syscall2)(__NR_stat, (UWord)file_name, (UWord)&buf); |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 305 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 306 | if (!sr_isError(res)) |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 307 | TRANSLATE_TO_vg_stat(vgbuf, &buf); |
| 308 | return res; |
| 309 | } |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 310 | |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 311 | # else |
| 312 | # error Unknown OS |
| 313 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 314 | } |
| 315 | |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 316 | Int VG_(fstat) ( Int fd, struct vg_stat* vgbuf ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 317 | { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 318 | SysRes res; |
| 319 | VG_(memset)(vgbuf, 0, sizeof(*vgbuf)); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 320 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 321 | # if defined(VGO_linux) || defined(VGO_darwin) |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 322 | /* First try with fstat64. If that doesn't work out, fall back to |
| 323 | the vanilla version. */ |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 324 | # if defined(__NR_fstat64) |
| 325 | { struct vki_stat64 buf64; |
| 326 | res = VG_(do_syscall2)(__NR_fstat64, (UWord)fd, (UWord)&buf64); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 327 | if (!(sr_isError(res) && sr_Err(res) == VKI_ENOSYS)) { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 328 | /* Success, or any failure except ENOSYS */ |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 329 | if (!sr_isError(res)) |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 330 | TRANSLATE_TO_vg_stat(vgbuf, &buf64); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 331 | return sr_isError(res) ? (-1) : 0; |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 332 | } |
| 333 | } |
| 334 | # endif /* if defined(__NR_fstat64) */ |
| 335 | { struct vki_stat buf; |
| 336 | res = VG_(do_syscall2)(__NR_fstat, (UWord)fd, (UWord)&buf); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 337 | if (!sr_isError(res)) |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 338 | TRANSLATE_TO_vg_stat(vgbuf, &buf); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 339 | return sr_isError(res) ? (-1) : 0; |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 340 | } |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 341 | |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 342 | # else |
| 343 | # error Unknown OS |
| 344 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 345 | } |
| 346 | |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 347 | #undef TRANSLATE_TO_vg_stat |
| 348 | |
| 349 | |
| 350 | Long VG_(fsize) ( Int fd ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 351 | { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 352 | struct vg_stat buf; |
| 353 | Int res = VG_(fstat)( fd, &buf ); |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 354 | return (res == -1) ? (-1LL) : buf.size; |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 355 | } |
| 356 | |
tom | b7c2f9d | 2014-05-22 08:57:06 +0000 | [diff] [blame] | 357 | SysRes VG_(getxattr) ( const HChar* file_name, const HChar* attr_name, Addr attr_value, SizeT attr_value_len ) |
| 358 | { |
| 359 | SysRes res; |
| 360 | #if defined(VGO_linux) |
| 361 | res = VG_(do_syscall4)(__NR_getxattr, (UWord)file_name, (UWord)attr_name, |
| 362 | attr_value, attr_value_len); |
| 363 | #else |
| 364 | res = VG_(mk_SysRes_Error)(VKI_ENOSYS); |
| 365 | #endif |
| 366 | return res; |
| 367 | } |
| 368 | |
njn | 63e5e6e | 2009-05-20 04:22:42 +0000 | [diff] [blame] | 369 | Bool VG_(is_dir) ( const HChar* f ) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 370 | { |
sewardj | ec61b65 | 2008-08-19 07:03:04 +0000 | [diff] [blame] | 371 | struct vg_stat buf; |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 372 | SysRes res = VG_(stat)(f, &buf); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 373 | return sr_isError(res) ? False |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 374 | : VKI_S_ISDIR(buf.mode) ? True : False; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 375 | } |
| 376 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 377 | SysRes VG_(dup) ( Int oldfd ) |
| 378 | { |
| 379 | return VG_(do_syscall1)(__NR_dup, oldfd); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 380 | } |
| 381 | |
njn | fad9837 | 2008-10-12 19:53:28 +0000 | [diff] [blame] | 382 | SysRes VG_(dup2) ( Int oldfd, Int newfd ) |
| 383 | { |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 384 | # if defined(VGO_linux) || defined(VGO_darwin) |
njn | fad9837 | 2008-10-12 19:53:28 +0000 | [diff] [blame] | 385 | return VG_(do_syscall2)(__NR_dup2, oldfd, newfd); |
sewardj | 485ce16 | 2008-10-22 00:57:29 +0000 | [diff] [blame] | 386 | # else |
| 387 | # error Unknown OS |
| 388 | # endif |
njn | fad9837 | 2008-10-12 19:53:28 +0000 | [diff] [blame] | 389 | } |
| 390 | |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 391 | /* Returns -1 on error. */ |
njn | bb7af3f | 2009-05-22 07:08:12 +0000 | [diff] [blame] | 392 | Int VG_(fcntl) ( Int fd, Int cmd, Addr arg ) |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 393 | { |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 394 | # if defined(VGO_linux) |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 395 | SysRes res = VG_(do_syscall3)(__NR_fcntl, fd, cmd, arg); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 396 | # elif defined(VGO_darwin) |
| 397 | SysRes res = VG_(do_syscall3)(__NR_fcntl_nocancel, fd, cmd, arg); |
| 398 | # else |
| 399 | # error "Unknown OS" |
| 400 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 401 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | 327fe8a | 2005-06-12 02:49:35 +0000 | [diff] [blame] | 402 | } |
| 403 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 404 | Int VG_(rename) ( const HChar* old_name, const HChar* new_name ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 405 | { |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 406 | SysRes res = VG_(do_syscall2)(__NR_rename, (UWord)old_name, (UWord)new_name); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 407 | return sr_isError(res) ? (-1) : 0; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 408 | } |
| 409 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 410 | Int VG_(unlink) ( const HChar* file_name ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 411 | { |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 412 | # if defined(VGP_arm64_linux) |
| 413 | SysRes res = VG_(do_syscall2)(__NR_unlinkat, VKI_AT_FDCWD, |
| 414 | (UWord)file_name); |
| 415 | # else |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 416 | SysRes res = VG_(do_syscall1)(__NR_unlink, (UWord)file_name); |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 417 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 418 | return sr_isError(res) ? (-1) : 0; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 419 | } |
| 420 | |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame^] | 421 | /* The working directory at startup. |
| 422 | All that is really needed is to note the cwd at process startup. |
| 423 | Hence VG_(record_startup_wd) notes it (in a platform dependent way) |
| 424 | and VG_(get_startup_wd) produces the noted value. */ |
| 425 | static HChar *startup_wd; |
| 426 | static Bool startup_wd_acquired = False; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 427 | |
| 428 | /* Record the process' working directory at startup. Is intended to |
| 429 | be called exactly once, at startup, before the working directory |
| 430 | changes. Return True for success, False for failure, so that the |
| 431 | caller can bomb out suitably without creating module cycles if |
| 432 | there is a problem. */ |
| 433 | Bool VG_(record_startup_wd) ( void ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 434 | { |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 435 | vg_assert(!startup_wd_acquired); |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame^] | 436 | |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 437 | # if defined(VGO_linux) |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 438 | /* Simple: just ask the kernel */ |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame^] | 439 | SysRes res; |
| 440 | SizeT szB = 0; |
| 441 | do { |
| 442 | szB += 500; |
| 443 | startup_wd = VG_(realloc)("startup_wd", startup_wd, szB); |
| 444 | VG_(memset)(startup_wd, 0, szB); |
| 445 | res = VG_(do_syscall2)(__NR_getcwd, (UWord)startup_wd, szB-1); |
| 446 | } while (sr_isError(res)); |
| 447 | |
| 448 | vg_assert(startup_wd[szB-1] == 0); |
| 449 | startup_wd_acquired = True; |
| 450 | return True; |
| 451 | |
sewardj | 6e9de46 | 2011-06-28 07:25:29 +0000 | [diff] [blame] | 452 | # elif defined(VGO_darwin) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 453 | /* We can't ask the kernel, so instead rely on launcher-*.c to |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 454 | tell us the startup path. Note the env var is keyed to the |
| 455 | parent's PID, not ours, since our parent is the launcher |
| 456 | process. */ |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame^] | 457 | { HChar envvar[100]; // large enough |
| 458 | HChar* wd; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 459 | VG_(memset)(envvar, 0, sizeof(envvar)); |
| 460 | VG_(sprintf)(envvar, "VALGRIND_STARTUP_PWD_%d_XYZZY", |
| 461 | (Int)VG_(getppid)()); |
| 462 | wd = VG_(getenv)( envvar ); |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame^] | 463 | if (wd == NULL) |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 464 | return False; |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame^] | 465 | SizeT need = VG_(strlen)(wd) + 1; |
| 466 | startup_wd = VG_(malloc)("startup_wd", need); |
| 467 | VG_(strcpy)(startup_wd, wd); |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 468 | startup_wd_acquired = True; |
| 469 | return True; |
| 470 | } |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 471 | # else |
| 472 | # error Unknown OS |
| 473 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 474 | } |
| 475 | |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame^] | 476 | /* Return the previously acquired startup_wd. */ |
| 477 | const HChar *VG_(get_startup_wd) ( void ) |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 478 | { |
| 479 | vg_assert(startup_wd_acquired); |
florian | 29d82f6 | 2014-09-27 17:42:07 +0000 | [diff] [blame^] | 480 | |
| 481 | return startup_wd; |
sewardj | 198f34f | 2007-07-09 23:13:07 +0000 | [diff] [blame] | 482 | } |
| 483 | |
philippe | 4254584 | 2013-12-05 22:10:55 +0000 | [diff] [blame] | 484 | SysRes VG_(poll) (struct vki_pollfd *fds, Int nfds, Int timeout) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 485 | { |
| 486 | SysRes res; |
philippe | 0eb0d5a | 2014-02-11 23:50:16 +0000 | [diff] [blame] | 487 | # if defined(VGP_arm64_linux) |
| 488 | /* ARM64 wants to use __NR_ppoll rather than __NR_poll. */ |
| 489 | struct vki_timespec timeout_ts; |
| 490 | if (timeout >= 0) { |
| 491 | timeout_ts.tv_sec = timeout / 1000; |
| 492 | timeout_ts.tv_nsec = ((long)timeout % 1000) * 1000000; |
| 493 | } |
| 494 | res = VG_(do_syscall4)(__NR_ppoll, |
| 495 | (UWord)fds, nfds, |
| 496 | (UWord)(timeout >= 0 ? &timeout_ts : NULL), |
| 497 | (UWord)NULL); |
| 498 | # elif defined(VGO_linux) |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 499 | res = VG_(do_syscall3)(__NR_poll, (UWord)fds, nfds, timeout); |
sewardj | 6caac71 | 2012-08-18 06:45:07 +0000 | [diff] [blame] | 500 | # elif defined(VGO_darwin) |
| 501 | res = VG_(do_syscall3)(__NR_poll_nocancel, (UWord)fds, nfds, timeout); |
| 502 | # else |
| 503 | # error "Unknown OS" |
| 504 | # endif |
philippe | 4254584 | 2013-12-05 22:10:55 +0000 | [diff] [blame] | 505 | return res; |
sewardj | 3b29048 | 2011-05-06 21:02:55 +0000 | [diff] [blame] | 506 | } |
| 507 | |
| 508 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 509 | Int VG_(readlink) (const HChar* path, HChar* buf, UInt bufsiz) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 510 | { |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 511 | SysRes res; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 512 | /* res = readlink( path, buf, bufsiz ); */ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 513 | # if defined(VGP_arm64_linux) |
| 514 | res = VG_(do_syscall4)(__NR_readlinkat, VKI_AT_FDCWD, |
| 515 | (UWord)path, (UWord)buf, bufsiz); |
| 516 | # else |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 517 | res = VG_(do_syscall3)(__NR_readlink, (UWord)path, (UWord)buf, bufsiz); |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 518 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 519 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 520 | } |
| 521 | |
sewardj | b69cd96 | 2014-09-01 22:26:18 +0000 | [diff] [blame] | 522 | #if defined(VGO_linux) |
mjw | 495c656 | 2014-08-29 14:28:30 +0000 | [diff] [blame] | 523 | Int VG_(getdents64) (Int fd, struct vki_dirent64 *dirp, UInt count) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 524 | { |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 525 | SysRes res; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 526 | /* res = getdents( fd, dirp, count ); */ |
mjw | 495c656 | 2014-08-29 14:28:30 +0000 | [diff] [blame] | 527 | res = VG_(do_syscall3)(__NR_getdents64, fd, (UWord)dirp, count); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 528 | return sr_isError(res) ? -1 : sr_Res(res); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 529 | } |
sewardj | b69cd96 | 2014-09-01 22:26:18 +0000 | [diff] [blame] | 530 | #endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 531 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 532 | /* Check accessibility of a file. Returns zero for access granted, |
| 533 | nonzero otherwise. */ |
njn | 63e5e6e | 2009-05-20 04:22:42 +0000 | [diff] [blame] | 534 | Int VG_(access) ( const HChar* path, Bool irusr, Bool iwusr, Bool ixusr ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 535 | { |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 536 | # if defined(VGO_linux) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 537 | /* Very annoyingly, I cannot find any definition for R_OK et al in |
| 538 | the kernel interfaces. Therefore I reluctantly resort to |
| 539 | hardwiring in these magic numbers that I determined by |
| 540 | experimentation. */ |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 541 | # define VKI_R_OK 4 |
| 542 | # define VKI_W_OK 2 |
| 543 | # define VKI_X_OK 1 |
| 544 | # endif |
| 545 | |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 546 | UWord w = (irusr ? VKI_R_OK : 0) |
| 547 | | (iwusr ? VKI_W_OK : 0) |
| 548 | | (ixusr ? VKI_X_OK : 0); |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 549 | # if defined(VGP_arm64_linux) |
| 550 | SysRes res = VG_(do_syscall3)(__NR_faccessat, VKI_AT_FDCWD, (UWord)path, w); |
| 551 | # else |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 552 | SysRes res = VG_(do_syscall2)(__NR_access, (UWord)path, w); |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 553 | # endif |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 554 | return sr_isError(res) ? 1 : 0; |
| 555 | |
| 556 | # if defined(VGO_linux) |
| 557 | # undef VKI_R_OK |
| 558 | # undef VKI_W_OK |
| 559 | # undef VKI_X_OK |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 560 | # endif |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 561 | } |
| 562 | |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 563 | /* |
| 564 | Emulate the normal Unix permissions checking algorithm. |
| 565 | |
| 566 | If owner matches, then use the owner permissions, else |
| 567 | if group matches, then use the group permissions, else |
| 568 | use other permissions. |
| 569 | |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 570 | Note that we can't deal properly with SUID/SGID. By default |
| 571 | (allow_setuid == False), we refuse to run them (otherwise the |
| 572 | executable may misbehave if it doesn't have the permissions it |
| 573 | thinks it does). However, the caller may indicate that setuid |
| 574 | executables are allowed, for example if we are going to exec them |
| 575 | but not trace into them (iow, client sys_execve when |
| 576 | clo_trace_children == False). |
| 577 | |
| 578 | If VKI_EACCES is returned (iow, permission was refused), then |
| 579 | *is_setuid is set to True iff permission was refused because the |
| 580 | executable is setuid. |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 581 | */ |
| 582 | /* returns: 0 = success, non-0 is failure */ |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 583 | Int VG_(check_executable)(/*OUT*/Bool* is_setuid, |
njn | 63e5e6e | 2009-05-20 04:22:42 +0000 | [diff] [blame] | 584 | const HChar* f, Bool allow_setuid) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 585 | { |
sewardj | 4231a85 | 2008-08-19 08:32:03 +0000 | [diff] [blame] | 586 | struct vg_stat st; |
sewardj | 26b8728 | 2006-10-17 12:49:31 +0000 | [diff] [blame] | 587 | SysRes res = VG_(stat)(f, &st); |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 588 | |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 589 | if (is_setuid) |
| 590 | *is_setuid = False; |
| 591 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 592 | if (sr_isError(res)) { |
| 593 | return sr_Err(res); |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 594 | } |
| 595 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 596 | if ( (st.mode & (VKI_S_ISUID | VKI_S_ISGID)) && !allow_setuid ) { |
sewardj | c74b3ba | 2007-11-17 21:11:57 +0000 | [diff] [blame] | 597 | if (is_setuid) |
| 598 | *is_setuid = True; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 599 | return VKI_EACCES; |
| 600 | } |
| 601 | |
tom | b7c2f9d | 2014-05-22 08:57:06 +0000 | [diff] [blame] | 602 | res = VG_(getxattr)(f, "security.capability", (Addr)0, 0); |
| 603 | if (!sr_isError(res) && !allow_setuid) { |
| 604 | if (is_setuid) |
| 605 | *is_setuid = True; |
| 606 | return VKI_EACCES; |
| 607 | } |
| 608 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 609 | if (VG_(geteuid)() == st.uid) { |
| 610 | if (!(st.mode & VKI_S_IXUSR)) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 611 | return VKI_EACCES; |
| 612 | } else { |
sewardj | 45406ef | 2006-10-18 00:33:46 +0000 | [diff] [blame] | 613 | Int grpmatch = 0; |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 614 | |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 615 | if (VG_(getegid)() == st.gid) |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 616 | grpmatch = 1; |
| 617 | else { |
| 618 | UInt groups[32]; |
| 619 | Int ngrp = VG_(getgroups)(32, groups); |
| 620 | Int i; |
| 621 | /* ngrp will be -1 if VG_(getgroups) failed. */ |
| 622 | for (i = 0; i < ngrp; i++) { |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 623 | if (groups[i] == st.gid) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 624 | grpmatch = 1; |
| 625 | break; |
| 626 | } |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | if (grpmatch) { |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 631 | if (!(st.mode & VKI_S_IXGRP)) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 632 | return VKI_EACCES; |
| 633 | } |
njn | 9c20ece | 2009-05-20 02:02:30 +0000 | [diff] [blame] | 634 | } else if (!(st.mode & VKI_S_IXOTH)) { |
njn | 7375061 | 2005-10-14 03:11:30 +0000 | [diff] [blame] | 635 | return VKI_EACCES; |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | return 0; |
| 640 | } |
| 641 | |
njn | c4431bf | 2009-01-15 21:29:24 +0000 | [diff] [blame] | 642 | SysRes VG_(pread) ( Int fd, void* buf, Int count, OffT offset ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 643 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 644 | SysRes res; |
philippe | 8050bb7 | 2012-04-13 23:07:29 +0000 | [diff] [blame] | 645 | // on 32 bits platforms, we receive a 32 bits OffT but |
| 646 | // we must extend it to pass a long long 64 bits. |
| 647 | # if defined(VGP_x86_linux) |
| 648 | vg_assert(sizeof(OffT) == 4); |
| 649 | res = VG_(do_syscall5)(__NR_pread64, fd, (UWord)buf, count, |
| 650 | offset, 0); // Little endian long long |
| 651 | return res; |
| 652 | # elif defined(VGP_arm_linux) |
| 653 | vg_assert(sizeof(OffT) == 4); |
| 654 | res = VG_(do_syscall5)(__NR_pread64, fd, (UWord)buf, count, |
| 655 | 0, offset); // Big endian long long |
| 656 | return res; |
| 657 | # elif defined(VGP_ppc32_linux) |
| 658 | vg_assert(sizeof(OffT) == 4); |
| 659 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 660 | 0, // Padding needed on PPC32 |
| 661 | 0, offset); // Big endian long long |
| 662 | return res; |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 663 | # elif defined(VGP_mips32_linux) && (VKI_LITTLE_ENDIAN) |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 664 | vg_assert(sizeof(OffT) == 4); |
| 665 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 666 | 0, offset, 0); |
| 667 | return res; |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 668 | # elif defined(VGP_mips32_linux) && (VKI_BIG_ENDIAN) |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 669 | vg_assert(sizeof(OffT) == 4); |
| 670 | res = VG_(do_syscall6)(__NR_pread64, fd, (UWord)buf, count, |
| 671 | 0, 0, offset); |
| 672 | return res; |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 673 | # elif defined(VGP_amd64_linux) || defined(VGP_s390x_linux) \ |
| 674 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 675 | || defined(VGP_mips64_linux) \ |
| 676 | || defined(VGP_arm64_linux) |
philippe | 8050bb7 | 2012-04-13 23:07:29 +0000 | [diff] [blame] | 677 | res = VG_(do_syscall4)(__NR_pread64, fd, (UWord)buf, count, offset); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 678 | return res; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 679 | # elif defined(VGP_amd64_darwin) |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 680 | vg_assert(sizeof(OffT) == 8); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 681 | res = VG_(do_syscall4)(__NR_pread_nocancel, fd, (UWord)buf, count, offset); |
| 682 | return res; |
| 683 | # elif defined(VGP_x86_darwin) |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 684 | vg_assert(sizeof(OffT) == 8); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 685 | res = VG_(do_syscall5)(__NR_pread_nocancel, fd, (UWord)buf, count, |
sewardj | 972316d | 2012-04-21 15:33:26 +0000 | [diff] [blame] | 686 | offset & 0xffffffff, offset >> 32); |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 687 | return res; |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 688 | # else |
| 689 | # error "Unknown platform" |
| 690 | # endif |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 691 | } |
| 692 | |
florian | b985e2d | 2011-09-29 03:03:45 +0000 | [diff] [blame] | 693 | /* Return the name of a directory for temporary files. */ |
| 694 | const HChar *VG_(tmpdir)(void) |
| 695 | { |
| 696 | const HChar *tmpdir; |
| 697 | |
| 698 | tmpdir = VG_(getenv)("TMPDIR"); |
| 699 | if (tmpdir == NULL || *tmpdir == '\0') tmpdir = VG_TMPDIR; |
| 700 | if (tmpdir == NULL || *tmpdir == '\0') tmpdir = "/tmp"; /* fallback */ |
| 701 | |
| 702 | return tmpdir; |
| 703 | } |
| 704 | |
florian | 6037226 | 2014-08-09 21:45:56 +0000 | [diff] [blame] | 705 | static const HChar mkstemp_format[] = "%s/valgrind_%s_%08x"; |
philippe | cc64826 | 2013-05-26 21:09:20 +0000 | [diff] [blame] | 706 | |
| 707 | SizeT VG_(mkstemp_fullname_bufsz) ( SizeT part_of_name_len ) |
| 708 | { |
| 709 | return VG_(strlen)(mkstemp_format) |
| 710 | + VG_(strlen)(VG_(tmpdir)()) - 2 // %s tmpdir |
| 711 | + part_of_name_len - 2 // %s part_of_name |
| 712 | + 8 - 4 // %08x |
| 713 | + 1; // trailing 0 |
| 714 | } |
| 715 | |
| 716 | |
philippe | d47676f | 2014-08-09 11:26:51 +0000 | [diff] [blame] | 717 | Int VG_(mkstemp) ( const HChar* part_of_name, /*OUT*/HChar* fullname ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 718 | { |
philippe | cc64826 | 2013-05-26 21:09:20 +0000 | [diff] [blame] | 719 | HChar buf[VG_(mkstemp_fullname_bufsz)(VG_(strlen)(part_of_name))]; |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 720 | Int n, tries, fd; |
| 721 | UInt seed; |
| 722 | SysRes sres; |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 723 | const HChar *tmpdir; |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 724 | |
| 725 | vg_assert(part_of_name); |
| 726 | n = VG_(strlen)(part_of_name); |
| 727 | vg_assert(n > 0 && n < 100); |
| 728 | |
| 729 | seed = (VG_(getpid)() << 9) ^ VG_(getppid)(); |
| 730 | |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 731 | /* Determine sensible location for temporary files */ |
florian | b985e2d | 2011-09-29 03:03:45 +0000 | [diff] [blame] | 732 | tmpdir = VG_(tmpdir)(); |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 733 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 734 | tries = 0; |
| 735 | while (True) { |
sewardj | 824b397 | 2011-05-09 22:42:06 +0000 | [diff] [blame] | 736 | if (tries++ > 10) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 737 | return -1; |
florian | 6037226 | 2014-08-09 21:45:56 +0000 | [diff] [blame] | 738 | VG_(sprintf)( buf, mkstemp_format, |
florian | 1763e81 | 2011-07-12 19:07:05 +0000 | [diff] [blame] | 739 | tmpdir, part_of_name, VG_(random)( &seed )); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 740 | if (0) |
| 741 | VG_(printf)("VG_(mkstemp): trying: %s\n", buf); |
| 742 | |
| 743 | sres = VG_(open)(buf, |
| 744 | VKI_O_CREAT|VKI_O_RDWR|VKI_O_EXCL|VKI_O_TRUNC, |
| 745 | VKI_S_IRUSR|VKI_S_IWUSR); |
sewardj | 80fc03b | 2011-09-26 16:46:04 +0000 | [diff] [blame] | 746 | if (sr_isError(sres)) { |
| 747 | VG_(umsg)("VG_(mkstemp): failed to create temp file: %s\n", buf); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 748 | continue; |
sewardj | 80fc03b | 2011-09-26 16:46:04 +0000 | [diff] [blame] | 749 | } |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 750 | /* VG_(safe_fd) doesn't return if it fails. */ |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 751 | fd = VG_(safe_fd)( sr_Res(sres) ); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 752 | if (fullname) |
| 753 | VG_(strcpy)( fullname, buf ); |
| 754 | return fd; |
| 755 | } |
| 756 | /* NOTREACHED */ |
| 757 | } |
| 758 | |
| 759 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 760 | /* --------------------------------------------------------------------- |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 761 | Socket-related stuff. |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 762 | ------------------------------------------------------------------ */ |
| 763 | |
| 764 | static |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 765 | 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] | 766 | |
| 767 | static |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 768 | Int my_connect ( Int sockfd, struct vki_sockaddr_in* serv_addr, Int addrlen ); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 769 | |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 770 | UInt VG_(htonl) ( UInt x ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 771 | { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 772 | # if defined(VG_BIGENDIAN) |
| 773 | return x; |
| 774 | # else |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 775 | return |
| 776 | (((x >> 24) & 0xFF) << 0) | (((x >> 16) & 0xFF) << 8) |
| 777 | | (((x >> 8) & 0xFF) << 16) | (((x >> 0) & 0xFF) << 24); |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 778 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 779 | } |
| 780 | |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 781 | UInt VG_(ntohl) ( UInt x ) |
| 782 | { |
| 783 | # if defined(VG_BIGENDIAN) |
| 784 | return x; |
| 785 | # else |
| 786 | return |
| 787 | (((x >> 24) & 0xFF) << 0) | (((x >> 16) & 0xFF) << 8) |
| 788 | | (((x >> 8) & 0xFF) << 16) | (((x >> 0) & 0xFF) << 24); |
| 789 | # endif |
| 790 | } |
| 791 | |
| 792 | UShort VG_(htons) ( UShort x ) |
| 793 | { |
| 794 | # if defined(VG_BIGENDIAN) |
| 795 | return x; |
| 796 | # else |
| 797 | return |
| 798 | (((x >> 8) & 0xFF) << 0) | (((x >> 0) & 0xFF) << 8); |
| 799 | # endif |
| 800 | } |
| 801 | |
| 802 | UShort VG_(ntohs) ( UShort x ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 803 | { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 804 | # if defined(VG_BIGENDIAN) |
| 805 | return x; |
| 806 | # else |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 807 | return |
| 808 | (((x >> 8) & 0xFF) << 0) | (((x >> 0) & 0xFF) << 8); |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 809 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 810 | } |
| 811 | |
| 812 | |
| 813 | /* The main function. |
| 814 | |
| 815 | Supplied string contains either an ip address "192.168.0.1" or |
| 816 | an ip address and port pair, "192.168.0.1:1500". Parse these, |
| 817 | and return: |
| 818 | -1 if there is a parse error |
| 819 | -2 if no parse error, but specified host:port cannot be opened |
| 820 | the relevant file (socket) descriptor, otherwise. |
| 821 | is used. |
| 822 | */ |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 823 | Int VG_(connect_via_socket)( const HChar* str ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 824 | { |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 825 | # if defined(VGO_linux) || defined(VGO_darwin) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 826 | Int sd, res; |
| 827 | struct vki_sockaddr_in servAddr; |
| 828 | UInt ip = 0; |
| 829 | UShort port = VG_CLO_DEFAULT_LOGPORT; |
| 830 | Bool ok = parse_inet_addr_and_port(str, &ip, &port); |
| 831 | if (!ok) |
| 832 | return -1; |
| 833 | |
| 834 | //if (0) |
| 835 | // VG_(printf)("ip = %d.%d.%d.%d, port %d\n", |
| 836 | // (ip >> 24) & 0xFF, (ip >> 16) & 0xFF, |
| 837 | // (ip >> 8) & 0xFF, ip & 0xFF, |
| 838 | // (UInt)port ); |
| 839 | |
| 840 | servAddr.sin_family = VKI_AF_INET; |
tom | a4a4f41 | 2005-11-17 12:01:56 +0000 | [diff] [blame] | 841 | servAddr.sin_addr.s_addr = VG_(htonl)(ip); |
| 842 | servAddr.sin_port = VG_(htons)(port); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 843 | |
| 844 | /* create socket */ |
njn | 0cd5d97 | 2009-05-22 02:00:27 +0000 | [diff] [blame] | 845 | sd = VG_(socket)(VKI_AF_INET, VKI_SOCK_STREAM, 0 /* IPPROTO_IP ? */); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 846 | if (sd < 0) { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 847 | /* this shouldn't happen ... nevertheless */ |
| 848 | return -2; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 849 | } |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 850 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 851 | /* connect to server */ |
njn | b143b27 | 2009-05-22 00:47:08 +0000 | [diff] [blame] | 852 | res = my_connect(sd, &servAddr, sizeof(servAddr)); |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 853 | if (res < 0) { |
sewardj | a1c4bfb | 2005-10-18 02:15:39 +0000 | [diff] [blame] | 854 | /* connection failed */ |
| 855 | return -2; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | return sd; |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 859 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 860 | # else |
| 861 | # error "Unknown OS" |
| 862 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 863 | } |
| 864 | |
| 865 | |
| 866 | /* Let d = one or more digits. Accept either: |
| 867 | d.d.d.d or d.d.d.d:d |
| 868 | */ |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 869 | 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] | 870 | { |
| 871 | # define GET_CH ((*str) ? (*str++) : 0) |
| 872 | UInt ipa, i, j, c, any; |
| 873 | ipa = 0; |
| 874 | for (i = 0; i < 4; i++) { |
| 875 | j = 0; |
| 876 | any = 0; |
| 877 | while (1) { |
| 878 | c = GET_CH; |
| 879 | if (c < '0' || c > '9') break; |
| 880 | j = 10 * j + (int)(c - '0'); |
| 881 | any = 1; |
| 882 | } |
| 883 | if (any == 0 || j > 255) goto syntaxerr; |
| 884 | ipa = (ipa << 8) + j; |
| 885 | if (i <= 2 && c != '.') goto syntaxerr; |
| 886 | } |
| 887 | if (c == 0 || c == ':') |
| 888 | *ip_addr = ipa; |
| 889 | if (c == 0) goto ok; |
| 890 | if (c != ':') goto syntaxerr; |
| 891 | j = 0; |
| 892 | any = 0; |
| 893 | while (1) { |
| 894 | c = GET_CH; |
| 895 | if (c < '0' || c > '9') break; |
| 896 | j = j * 10 + (int)(c - '0'); |
| 897 | any = 1; |
| 898 | if (j > 65535) goto syntaxerr; |
| 899 | } |
| 900 | if (any == 0 || c != 0) goto syntaxerr; |
| 901 | if (j < 1024) goto syntaxerr; |
| 902 | *port = (UShort)j; |
| 903 | ok: |
| 904 | return 1; |
| 905 | syntaxerr: |
| 906 | return 0; |
| 907 | # undef GET_CH |
| 908 | } |
| 909 | |
njn | 0cd5d97 | 2009-05-22 02:00:27 +0000 | [diff] [blame] | 910 | // GrP fixme safe_fd? |
| 911 | Int VG_(socket) ( Int domain, Int type, Int protocol ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 912 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 913 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 914 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 915 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 916 | SysRes res; |
| 917 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 918 | args[0] = domain; |
| 919 | args[1] = type; |
| 920 | args[2] = protocol; |
| 921 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SOCKET, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 922 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 923 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 924 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 925 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
| 926 | || defined(VGP_arm64_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 927 | SysRes res; |
| 928 | res = VG_(do_syscall3)(__NR_socket, domain, type, protocol ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 929 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 930 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 931 | # elif defined(VGO_darwin) |
| 932 | SysRes res; |
| 933 | res = VG_(do_syscall3)(__NR_socket, domain, type, protocol); |
| 934 | if (!sr_isError(res)) { |
| 935 | // Set SO_NOSIGPIPE so write() returns EPIPE instead of raising SIGPIPE |
| 936 | Int optval = 1; |
| 937 | SysRes res2; |
| 938 | res2 = VG_(do_syscall5)(__NR_setsockopt, sr_Res(res), VKI_SOL_SOCKET, |
| 939 | VKI_SO_NOSIGPIPE, (UWord)&optval, |
| 940 | sizeof(optval)); |
| 941 | // ignore setsockopt() error |
| 942 | } |
| 943 | return sr_isError(res) ? -1 : sr_Res(res); |
| 944 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 945 | # else |
| 946 | # error "Unknown arch" |
| 947 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 948 | } |
| 949 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 950 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 951 | static |
njn | 4bd96bd | 2009-05-22 00:52:14 +0000 | [diff] [blame] | 952 | Int my_connect ( Int sockfd, struct vki_sockaddr_in* serv_addr, Int addrlen ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 953 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 954 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 955 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 956 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 957 | SysRes res; |
| 958 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 959 | args[0] = sockfd; |
| 960 | args[1] = (UWord)serv_addr; |
| 961 | args[2] = addrlen; |
| 962 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_CONNECT, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 963 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 964 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 965 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 966 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
| 967 | || defined(VGP_arm64_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 968 | SysRes res; |
| 969 | res = VG_(do_syscall3)(__NR_connect, sockfd, (UWord)serv_addr, addrlen); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 970 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 971 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 972 | # elif defined(VGO_darwin) |
| 973 | SysRes res; |
| 974 | res = VG_(do_syscall3)(__NR_connect_nocancel, |
| 975 | sockfd, (UWord)serv_addr, addrlen); |
| 976 | return sr_isError(res) ? -1 : sr_Res(res); |
| 977 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 978 | # else |
| 979 | # error "Unknown arch" |
| 980 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 981 | } |
| 982 | |
florian | dbb3584 | 2012-10-27 18:39:11 +0000 | [diff] [blame] | 983 | Int VG_(write_socket)( Int sd, const void *msg, Int count ) |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 984 | { |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 985 | /* This is actually send(). */ |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 986 | |
| 987 | /* For Linux, VKI_MSG_NOSIGNAL is a request not to send SIGPIPE on |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 988 | errors on stream oriented sockets when the other end breaks the |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 989 | connection. The EPIPE error is still returned. |
| 990 | |
| 991 | For Darwin, VG_(socket)() sets SO_NOSIGPIPE to get EPIPE instead of |
| 992 | SIGPIPE */ |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 993 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 994 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 995 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 996 | || defined(VGP_s390x_linux) |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 997 | SysRes res; |
| 998 | UWord args[4]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 999 | args[0] = sd; |
| 1000 | args[1] = (UWord)msg; |
| 1001 | args[2] = count; |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1002 | args[3] = VKI_MSG_NOSIGNAL; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1003 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SEND, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1004 | return sr_isError(res) ? -1 : sr_Res(res); |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 1005 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1006 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1007 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
| 1008 | || defined(VGP_arm64_linux) |
sewardj | 1e86656 | 2005-09-28 19:58:58 +0000 | [diff] [blame] | 1009 | SysRes res; |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1010 | res = VG_(do_syscall6)(__NR_sendto, sd, (UWord)msg, |
| 1011 | count, VKI_MSG_NOSIGNAL, 0,0); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1012 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1013 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1014 | # elif defined(VGP_x86_darwin) || defined(VGP_amd64_darwin) |
| 1015 | SysRes res; |
| 1016 | res = VG_(do_syscall3)(__NR_write_nocancel, sd, (UWord)msg, count); |
| 1017 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1018 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1019 | # else |
| 1020 | # error "Unknown platform" |
| 1021 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1022 | } |
| 1023 | |
| 1024 | Int VG_(getsockname) ( Int sd, struct vki_sockaddr *name, Int *namelen) |
| 1025 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1026 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1027 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1028 | || defined(VGP_s390x_linux) \ |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1029 | || defined(VGP_mips32_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1030 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1031 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1032 | args[0] = sd; |
| 1033 | args[1] = (UWord)name; |
| 1034 | args[2] = (UWord)namelen; |
| 1035 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETSOCKNAME, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1036 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1037 | |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 1038 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1039 | || defined(VGP_mips64_linux) || defined(VGP_arm64_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1040 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1041 | res = VG_(do_syscall3)( __NR_getsockname, |
| 1042 | (UWord)sd, (UWord)name, (UWord)namelen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1043 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1044 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1045 | # elif defined(VGO_darwin) |
| 1046 | SysRes res; |
| 1047 | res = VG_(do_syscall3)( __NR_getsockname, |
| 1048 | (UWord)sd, (UWord)name, (UWord)namelen ); |
| 1049 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1050 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1051 | # else |
| 1052 | # error "Unknown platform" |
| 1053 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1054 | } |
| 1055 | |
| 1056 | Int VG_(getpeername) ( Int sd, struct vki_sockaddr *name, Int *namelen) |
| 1057 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1058 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1059 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1060 | || defined(VGP_s390x_linux) \ |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1061 | || defined(VGP_mips32_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1062 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1063 | UWord args[3]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1064 | args[0] = sd; |
| 1065 | args[1] = (UWord)name; |
| 1066 | args[2] = (UWord)namelen; |
| 1067 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETPEERNAME, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1068 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1069 | |
petarj | 4df0bfc | 2013-02-27 23:17:33 +0000 | [diff] [blame] | 1070 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1071 | || defined(VGP_mips64_linux) || defined(VGP_arm64_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1072 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1073 | res = VG_(do_syscall3)( __NR_getpeername, |
| 1074 | (UWord)sd, (UWord)name, (UWord)namelen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1075 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1076 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1077 | # elif defined(VGO_darwin) |
| 1078 | SysRes res; |
| 1079 | res = VG_(do_syscall3)( __NR_getpeername, |
| 1080 | (UWord)sd, (UWord)name, (UWord)namelen ); |
| 1081 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1082 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1083 | # else |
| 1084 | # error "Unknown platform" |
| 1085 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1086 | } |
| 1087 | |
| 1088 | Int VG_(getsockopt) ( Int sd, Int level, Int optname, void *optval, |
| 1089 | Int *optlen) |
| 1090 | { |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1091 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1092 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1093 | || defined(VGP_s390x_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1094 | SysRes res; |
sewardj | a8d8e23 | 2005-06-07 20:04:56 +0000 | [diff] [blame] | 1095 | UWord args[5]; |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1096 | args[0] = sd; |
| 1097 | args[1] = level; |
| 1098 | args[2] = optname; |
| 1099 | args[3] = (UWord)optval; |
| 1100 | args[4] = (UWord)optlen; |
| 1101 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_GETSOCKOPT, (UWord)&args); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1102 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1103 | |
sewardj | 5db1540 | 2012-06-07 09:13:21 +0000 | [diff] [blame] | 1104 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1105 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
| 1106 | || defined(VGP_arm64_linux) |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1107 | SysRes res; |
sewardj | a5c9e4a | 2005-06-09 13:21:58 +0000 | [diff] [blame] | 1108 | res = VG_(do_syscall5)( __NR_getsockopt, |
| 1109 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1110 | (UWord)optval, (UWord)optlen ); |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1111 | return sr_isError(res) ? -1 : sr_Res(res); |
sewardj | 9a66bb9 | 2006-10-17 01:38:13 +0000 | [diff] [blame] | 1112 | |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1113 | # elif defined(VGO_darwin) |
| 1114 | SysRes res; |
| 1115 | res = VG_(do_syscall5)( __NR_getsockopt, |
| 1116 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1117 | (UWord)optval, (UWord)optlen ); |
| 1118 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1119 | |
njn | cda2f0f | 2009-05-18 02:12:08 +0000 | [diff] [blame] | 1120 | # else |
| 1121 | # error "Unknown platform" |
| 1122 | # endif |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1123 | } |
| 1124 | |
| 1125 | |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1126 | Int VG_(setsockopt) ( Int sd, Int level, Int optname, void *optval, |
| 1127 | Int optlen) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1128 | { |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1129 | # if defined(VGP_x86_linux) || defined(VGP_ppc32_linux) \ |
carll | cae0cc2 | 2014-08-07 23:17:29 +0000 | [diff] [blame] | 1130 | || defined(VGP_ppc64be_linux) || defined(VGP_ppc64le_linux) \ |
| 1131 | || defined(VGP_s390x_linux) |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1132 | SysRes res; |
| 1133 | UWord args[5]; |
| 1134 | args[0] = sd; |
| 1135 | args[1] = level; |
| 1136 | args[2] = optname; |
| 1137 | args[3] = (UWord)optval; |
| 1138 | args[4] = (UWord)optlen; |
| 1139 | res = VG_(do_syscall2)(__NR_socketcall, VKI_SYS_SETSOCKOPT, (UWord)&args); |
| 1140 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1141 | |
| 1142 | # elif defined(VGP_amd64_linux) || defined(VGP_arm_linux) \ |
sewardj | f0c1250 | 2014-01-12 12:54:00 +0000 | [diff] [blame] | 1143 | || defined(VGP_mips32_linux) || defined(VGP_mips64_linux) \ |
| 1144 | || defined(VGP_arm64_linux) |
sewardj | 5d616df | 2013-07-02 08:07:15 +0000 | [diff] [blame] | 1145 | SysRes res; |
| 1146 | res = VG_(do_syscall5)( __NR_setsockopt, |
| 1147 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1148 | (UWord)optval, (UWord)optlen ); |
| 1149 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1150 | |
| 1151 | # elif defined(VGO_darwin) |
| 1152 | SysRes res; |
| 1153 | res = VG_(do_syscall5)( __NR_setsockopt, |
| 1154 | (UWord)sd, (UWord)level, (UWord)optname, |
| 1155 | (UWord)optval, (UWord)optlen ); |
| 1156 | return sr_isError(res) ? -1 : sr_Res(res); |
| 1157 | |
| 1158 | # else |
| 1159 | # error "Unknown platform" |
| 1160 | # endif |
| 1161 | } |
| 1162 | |
| 1163 | |
florian | 6bd9dc1 | 2012-11-23 16:17:43 +0000 | [diff] [blame] | 1164 | const HChar *VG_(basename)(const HChar *path) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1165 | { |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1166 | static HChar *buf = NULL; |
| 1167 | static SizeT buf_len = 0; |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1168 | const HChar *p, *end; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1169 | |
| 1170 | if (path == NULL || |
| 1171 | 0 == VG_(strcmp)(path, "")) |
| 1172 | { |
| 1173 | return "."; |
| 1174 | } |
| 1175 | |
| 1176 | p = path + VG_(strlen)(path); |
| 1177 | while (p > path && *p == '/') { |
| 1178 | // skip all trailing '/' |
| 1179 | p--; |
| 1180 | } |
| 1181 | |
| 1182 | if (p == path && *p == '/') return "/"; // all slashes |
| 1183 | |
| 1184 | end = p; |
| 1185 | |
| 1186 | while (p > path && *p != '/') { |
| 1187 | // now skip non '/' |
| 1188 | p--; |
| 1189 | } |
| 1190 | |
| 1191 | if (*p == '/') p++; |
| 1192 | |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1193 | SizeT need = end-p+1 + 1; |
| 1194 | if (need > buf_len) { |
| 1195 | buf_len = (buf_len == 0) ? 500 : need; |
| 1196 | buf = VG_(realloc)("basename", buf, buf_len); |
| 1197 | } |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1198 | VG_(strncpy)(buf, p, end-p+1); |
| 1199 | buf[end-p+1] = '\0'; |
| 1200 | |
| 1201 | return buf; |
| 1202 | } |
| 1203 | |
| 1204 | |
florian | 6bd9dc1 | 2012-11-23 16:17:43 +0000 | [diff] [blame] | 1205 | const HChar *VG_(dirname)(const HChar *path) |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1206 | { |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1207 | static HChar *buf = NULL; |
| 1208 | static SizeT buf_len = 0; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1209 | |
florian | 19f91bb | 2012-11-10 22:29:54 +0000 | [diff] [blame] | 1210 | const HChar *p; |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1211 | |
| 1212 | if (path == NULL || |
| 1213 | 0 == VG_(strcmp)(path, "") || |
| 1214 | 0 == VG_(strcmp)(path, "/")) |
| 1215 | { |
| 1216 | return "."; |
| 1217 | } |
| 1218 | |
| 1219 | p = path + VG_(strlen)(path); |
| 1220 | while (p > path && *p == '/') { |
| 1221 | // skip all trailing '/' |
| 1222 | p--; |
| 1223 | } |
| 1224 | |
| 1225 | while (p > path && *p != '/') { |
| 1226 | // now skip non '/' |
| 1227 | p--; |
| 1228 | } |
| 1229 | |
| 1230 | if (p == path) { |
| 1231 | if (*p == '/') return "/"; // all slashes |
| 1232 | else return "."; // no slashes |
| 1233 | } |
| 1234 | |
| 1235 | while (p > path && *p == '/') { |
| 1236 | // skip '/' again |
| 1237 | p--; |
| 1238 | } |
| 1239 | |
florian | 58946e9 | 2014-09-27 13:29:09 +0000 | [diff] [blame] | 1240 | SizeT need = p-path+1 + 1; |
| 1241 | if (need > buf_len) { |
| 1242 | buf_len = (buf_len == 0) ? 500 : need; |
| 1243 | buf = VG_(realloc)("dirname", buf, buf_len); |
| 1244 | } |
njn | f76d27a | 2009-05-28 01:53:07 +0000 | [diff] [blame] | 1245 | VG_(strncpy)(buf, path, p-path+1); |
| 1246 | buf[p-path+1] = '\0'; |
| 1247 | |
| 1248 | return buf; |
| 1249 | } |
| 1250 | |
| 1251 | |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 1252 | /*--------------------------------------------------------------------*/ |
| 1253 | /*--- end ---*/ |
| 1254 | /*--------------------------------------------------------------------*/ |