… | |
… | |
316 | # define NAME_MAX 4096 |
316 | # define NAME_MAX 4096 |
317 | #endif |
317 | #endif |
318 | |
318 | |
319 | /* used for readlink etc. */ |
319 | /* used for readlink etc. */ |
320 | #ifndef PATH_MAX |
320 | #ifndef PATH_MAX |
321 | # define PATH_MAX 4096 |
321 | # define PATH_MAX 0 |
322 | #endif |
322 | #endif |
|
|
323 | |
|
|
324 | #ifndef EIO_PATH_MIN |
|
|
325 | # define EIO_PATH_MIN 8160 |
|
|
326 | #endif |
|
|
327 | |
|
|
328 | #define EIO_PATH_MAX (PATH_MAX <= EIO_PATH_MIN ? EIO_PATH_MIN : PATH_MAX) |
323 | |
329 | |
324 | /* buffer size for various temporary buffers */ |
330 | /* buffer size for various temporary buffers */ |
325 | #define EIO_BUFSIZE 65536 |
331 | #define EIO_BUFSIZE 65536 |
326 | |
332 | |
327 | #define dBUF \ |
333 | #define dBUF \ |
… | |
… | |
974 | |
980 | |
975 | errno = ENOENT; |
981 | errno = ENOENT; |
976 | if (!*rel) |
982 | if (!*rel) |
977 | return -1; |
983 | return -1; |
978 | |
984 | |
979 | res = etp_tmpbuf_get (tmpbuf, PATH_MAX * 3); |
985 | res = etp_tmpbuf_get (tmpbuf, EIO_PATH_MAX * 3); |
980 | #ifdef _WIN32 |
986 | #ifdef _WIN32 |
981 | if (_access (rel, 4) != 0) |
987 | if (_access (rel, 4) != 0) |
982 | return -1; |
988 | return -1; |
983 | |
989 | |
984 | symlinks = GetFullPathName (rel, PATH_MAX * 3, res, 0); |
990 | symlinks = GetFullPathName (rel, EIO_PATH_MAX * 3, res, 0); |
985 | |
991 | |
986 | errno = ENAMETOOLONG; |
992 | errno = ENAMETOOLONG; |
987 | if (symlinks >= PATH_MAX * 3) |
993 | if (symlinks >= EIO_PATH_MAX * 3) |
988 | return -1; |
994 | return -1; |
989 | |
995 | |
990 | errno = EIO; |
996 | errno = EIO; |
991 | if (symlinks <= 0) |
997 | if (symlinks <= 0) |
992 | return -1; |
998 | return -1; |
993 | |
999 | |
994 | return symlinks; |
1000 | return symlinks; |
995 | |
1001 | |
996 | #else |
1002 | #else |
997 | tmp1 = res + PATH_MAX; |
1003 | tmp1 = res + EIO_PATH_MAX; |
998 | tmp2 = tmp1 + PATH_MAX; |
1004 | tmp2 = tmp1 + EIO_PATH_MAX; |
999 | |
1005 | |
1000 | #if 0 /* disabled, the musl way to do things is just too racy */ |
1006 | #if 0 /* disabled, the musl way to do things is just too racy */ |
1001 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
1007 | #if __linux && defined(O_NONBLOCK) && defined(O_NOATIME) |
1002 | /* on linux we may be able to ask the kernel */ |
1008 | /* on linux we may be able to ask the kernel */ |
1003 | { |
1009 | { |
1004 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
1010 | int fd = open (rel, O_RDONLY | O_NONBLOCK | O_NOCTTY | O_NOATIME); |
1005 | |
1011 | |
1006 | if (fd >= 0) |
1012 | if (fd >= 0) |
1007 | { |
1013 | { |
1008 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1014 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1009 | req->result = readlink (tmp1, res, PATH_MAX); |
1015 | req->result = readlink (tmp1, res, EIO_PATH_MAX); |
1010 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
1016 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
1011 | close (fd); |
1017 | close (fd); |
1012 | |
1018 | |
1013 | if (req->result > 0) |
1019 | if (req->result > 0) |
1014 | goto done; |
1020 | goto done; |
… | |
… | |
1027 | if (wd == EIO_INVALID_WD) |
1033 | if (wd == EIO_INVALID_WD) |
1028 | return -1; |
1034 | return -1; |
1029 | |
1035 | |
1030 | if (wd == EIO_CWD) |
1036 | if (wd == EIO_CWD) |
1031 | { |
1037 | { |
1032 | if (!getcwd (res, PATH_MAX)) |
1038 | if (!getcwd (res, EIO_PATH_MAX)) |
1033 | return -1; |
1039 | return -1; |
1034 | |
1040 | |
1035 | len = strlen (res); |
1041 | len = strlen (res); |
1036 | } |
1042 | } |
1037 | else |
1043 | else |
… | |
… | |
1084 | |
1090 | |
1085 | /* zero-terminate, for readlink */ |
1091 | /* zero-terminate, for readlink */ |
1086 | res [len + 1] = 0; |
1092 | res [len + 1] = 0; |
1087 | |
1093 | |
1088 | /* now check if it's a symlink */ |
1094 | /* now check if it's a symlink */ |
1089 | linklen = readlink (tmpbuf->ptr, tmp1, PATH_MAX); |
1095 | linklen = readlink (tmpbuf->ptr, tmp1, EIO_PATH_MAX); |
1090 | |
1096 | |
1091 | if (linklen < 0) |
1097 | if (linklen < 0) |
1092 | { |
1098 | { |
1093 | if (errno != EINVAL) |
1099 | if (errno != EINVAL) |
1094 | return -1; |
1100 | return -1; |
… | |
… | |
1100 | { |
1106 | { |
1101 | /* yay, it was a symlink - build new path in tmp2 */ |
1107 | /* yay, it was a symlink - build new path in tmp2 */ |
1102 | int rellen = strlen (rel); |
1108 | int rellen = strlen (rel); |
1103 | |
1109 | |
1104 | errno = ENAMETOOLONG; |
1110 | errno = ENAMETOOLONG; |
1105 | if (linklen + 1 + rellen >= PATH_MAX) |
1111 | if (linklen + 1 + rellen >= EIO_PATH_MAX) /* also catch linklen >= EIO_PATH_MAX */ |
1106 | return -1; |
1112 | return -1; |
1107 | |
1113 | |
1108 | errno = ELOOP; |
1114 | errno = ELOOP; |
1109 | if (!--symlinks) |
1115 | if (!--symlinks) |
1110 | return -1; |
1116 | return -1; |
… | |
… | |
1843 | ? rename (req->wd->str, req->ptr2) |
1849 | ? rename (req->wd->str, req->ptr2) |
1844 | : renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break; |
1850 | : renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break; |
1845 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
1851 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
1846 | case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break; |
1852 | case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break; |
1847 | case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1853 | case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1848 | case EIO_READLINK: ALLOC (PATH_MAX); |
|
|
1849 | req->result = readlinkat (dirfd, req->ptr1, req->ptr2, PATH_MAX); break; |
|
|
1850 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1854 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1851 | req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
1855 | req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1856 | case EIO_READLINK: ALLOC (EIO_PATH_MAX); |
|
|
1857 | req->result = readlinkat (dirfd, req->ptr1, req->ptr2, EIO_PATH_MAX); |
|
|
1858 | if (req->result == EIO_PATH_MAX) |
|
|
1859 | { |
|
|
1860 | req->result = -1; |
|
|
1861 | errno = ENAMETOOLONG; |
|
|
1862 | } |
|
|
1863 | break; |
1852 | case EIO_UTIME: |
1864 | case EIO_UTIME: |
1853 | case EIO_FUTIME: |
1865 | case EIO_FUTIME: |
1854 | { |
1866 | { |
1855 | struct timespec ts[2]; |
1867 | struct timespec ts[2]; |
1856 | struct timespec *times; |
1868 | struct timespec *times; |
… | |
… | |
1889 | case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break; |
1901 | case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break; |
1890 | case EIO_RENAME: req->result = rename (path , req->ptr2); break; |
1902 | case EIO_RENAME: req->result = rename (path , req->ptr2); break; |
1891 | case EIO_LINK: req->result = link (path , req->ptr2); break; |
1903 | case EIO_LINK: req->result = link (path , req->ptr2); break; |
1892 | case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break; |
1904 | case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break; |
1893 | case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break; |
1905 | case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break; |
1894 | case EIO_READLINK: ALLOC (PATH_MAX); |
|
|
1895 | req->result = readlink (path, req->ptr2, PATH_MAX); break; |
|
|
1896 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1906 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1897 | req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break; |
1907 | req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1908 | case EIO_READLINK: ALLOC (EIO_PATH_MAX); |
|
|
1909 | req->result = readlink (path, req->ptr2, EIO_PATH_MAX); |
|
|
1910 | if (req->result == EIO_PATH_MAX) |
|
|
1911 | { |
|
|
1912 | req->result = -1; |
|
|
1913 | errno = ENAMETOOLONG; |
|
|
1914 | } |
|
|
1915 | break; |
1898 | |
1916 | |
1899 | case EIO_UTIME: |
1917 | case EIO_UTIME: |
1900 | case EIO_FUTIME: |
1918 | case EIO_FUTIME: |
1901 | { |
1919 | { |
1902 | struct timeval tv[2]; |
1920 | struct timeval tv[2]; |