… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
|
|
40 | #ifndef _WIN32 |
|
|
41 | # include "config.h" |
|
|
42 | #endif |
|
|
43 | |
40 | #include "eio.h" |
44 | #include "eio.h" |
41 | |
45 | |
42 | #ifdef EIO_STACKSIZE |
46 | #ifdef EIO_STACKSIZE |
43 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
47 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
44 | #endif |
48 | #endif |
… | |
… | |
54 | #include <sys/statvfs.h> |
58 | #include <sys/statvfs.h> |
55 | #include <limits.h> |
59 | #include <limits.h> |
56 | #include <fcntl.h> |
60 | #include <fcntl.h> |
57 | #include <assert.h> |
61 | #include <assert.h> |
58 | |
62 | |
|
|
63 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
|
|
64 | /* intptr_t only comes form stdint.h, says idiot openbsd coder */ |
|
|
65 | #if HAVE_STDINT_H |
|
|
66 | # include <stdint.h> |
|
|
67 | #endif |
|
|
68 | |
59 | #ifndef EIO_FINISH |
69 | #ifndef EIO_FINISH |
60 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
70 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
61 | #endif |
71 | #endif |
62 | |
72 | |
63 | #ifndef EIO_DESTROY |
73 | #ifndef EIO_DESTROY |
… | |
… | |
71 | #ifdef _WIN32 |
81 | #ifdef _WIN32 |
72 | |
82 | |
73 | /*doh*/ |
83 | /*doh*/ |
74 | #else |
84 | #else |
75 | |
85 | |
76 | # include "config.h" |
|
|
77 | # include <sys/time.h> |
86 | # include <sys/time.h> |
78 | # include <sys/select.h> |
87 | # include <sys/select.h> |
79 | # include <unistd.h> |
88 | # include <unistd.h> |
80 | # include <utime.h> |
89 | # include <utime.h> |
81 | # include <signal.h> |
90 | # include <signal.h> |
… | |
… | |
933 | |
942 | |
934 | /* sendfile always needs emulation */ |
943 | /* sendfile always needs emulation */ |
935 | static ssize_t |
944 | static ssize_t |
936 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
945 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
937 | { |
946 | { |
|
|
947 | ssize_t written = 0; |
938 | ssize_t res; |
948 | ssize_t res; |
939 | |
949 | |
940 | if (!count) |
950 | if (!count) |
941 | return 0; |
951 | return 0; |
942 | |
952 | |
|
|
953 | for (;;) |
|
|
954 | { |
943 | #if HAVE_SENDFILE |
955 | #if HAVE_SENDFILE |
944 | # if __linux |
956 | # if __linux |
|
|
957 | off_t soffset = offset; |
945 | res = sendfile (ofd, ifd, &offset, count); |
958 | res = sendfile (ofd, ifd, &soffset, count); |
946 | |
959 | |
947 | # elif __FreeBSD__ |
960 | # elif __FreeBSD__ |
948 | /* |
961 | /* |
949 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
962 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
950 | * wasted on making it similar to other I/O functions. |
963 | * wasted on making it similar to other I/O functions. |
951 | */ |
964 | */ |
952 | { |
|
|
953 | off_t sbytes; |
965 | off_t sbytes; |
954 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
966 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
955 | |
967 | |
956 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
968 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
957 | /* freebsd' sendfile will return 0 on success */ |
969 | /* freebsd' sendfile will return 0 on success */ |
958 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
970 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
959 | /* not on e.g. EIO or EPIPE - sounds broken */ |
971 | /* not on e.g. EIO or EPIPE - sounds broken */ |
960 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
972 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
961 | res = sbytes; |
973 | res = sbytes; |
962 | #endif |
974 | #endif |
963 | |
975 | |
964 | /* according to source inspection, this is correct, and useful behaviour */ |
976 | /* according to source inspection, this is correct, and useful behaviour */ |
965 | if (sbytes) |
977 | if (sbytes) |
966 | res = sbytes; |
978 | res = sbytes; |
967 | } |
|
|
968 | |
979 | |
969 | # elif defined (__APPLE__) |
980 | # elif defined (__APPLE__) |
970 | |
|
|
971 | { |
|
|
972 | off_t sbytes = count; |
981 | off_t sbytes = count; |
973 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
982 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
974 | |
983 | |
975 | /* according to the manpage, sbytes is always valid */ |
984 | /* according to the manpage, sbytes is always valid */ |
976 | if (sbytes) |
985 | if (sbytes) |
977 | res = sbytes; |
986 | res = sbytes; |
978 | } |
|
|
979 | |
987 | |
980 | # elif __hpux |
988 | # elif __hpux |
981 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
989 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
982 | |
990 | |
983 | # elif __solaris |
991 | # elif __solaris |
984 | { |
|
|
985 | struct sendfilevec vec; |
992 | struct sendfilevec vec; |
986 | size_t sbytes; |
993 | size_t sbytes; |
987 | |
994 | |
988 | vec.sfv_fd = ifd; |
995 | vec.sfv_fd = ifd; |
989 | vec.sfv_flag = 0; |
996 | vec.sfv_flag = 0; |
990 | vec.sfv_off = offset; |
997 | vec.sfv_off = offset; |
991 | vec.sfv_len = count; |
998 | vec.sfv_len = count; |
992 | |
999 | |
993 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1000 | res = sendfilev (ofd, &vec, 1, &sbytes); |
994 | |
1001 | |
995 | if (res < 0 && sbytes) |
1002 | if (res < 0 && sbytes) |
996 | res = sbytes; |
1003 | res = sbytes; |
997 | } |
|
|
998 | |
1004 | |
999 | # endif |
1005 | # endif |
1000 | |
1006 | |
1001 | #elif defined (_WIN32) |
1007 | #elif defined (_WIN32) |
1002 | |
|
|
1003 | /* does not work, just for documentation of what would need to be done */ |
1008 | /* does not work, just for documentation of what would need to be done */ |
1004 | { |
|
|
1005 | HANDLE h = TO_SOCKET (ifd); |
1009 | HANDLE h = TO_SOCKET (ifd); |
1006 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
1010 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
1007 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
1011 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
1008 | } |
|
|
1009 | |
1012 | |
1010 | #else |
1013 | #else |
1011 | res = -1; |
1014 | res = -1; |
1012 | errno = ENOSYS; |
1015 | errno = ENOSYS; |
1013 | #endif |
1016 | #endif |
1014 | |
1017 | |
|
|
1018 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
1019 | if (res <= 128 * 1024 * 1024) |
|
|
1020 | { |
|
|
1021 | if (res > 0) |
|
|
1022 | written += res; |
|
|
1023 | |
|
|
1024 | if (written) |
|
|
1025 | return written; |
|
|
1026 | |
|
|
1027 | break; |
|
|
1028 | } |
|
|
1029 | else |
|
|
1030 | { |
|
|
1031 | /* if we requested more, then probably the kernel was lazy */ |
|
|
1032 | written += res; |
|
|
1033 | offset += res; |
|
|
1034 | count -= res; |
|
|
1035 | |
|
|
1036 | if (!count) |
|
|
1037 | return written; |
|
|
1038 | } |
|
|
1039 | } |
|
|
1040 | |
1015 | if (res < 0 |
1041 | if (res < 0 |
1016 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1042 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1017 | /* BSDs */ |
1043 | /* BSDs */ |
1018 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
1044 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
1019 | || errno == ENOTSUP |
1045 | || errno == ENOTSUP |
1020 | #endif |
1046 | #endif |
… | |
… | |
1060 | } |
1086 | } |
1061 | |
1087 | |
1062 | static signed char |
1088 | static signed char |
1063 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1089 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
1064 | { |
1090 | { |
1065 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
1091 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
1066 | : a->inode < b->inode ? -1 : a->inode > b->inode ? 1 : 0; |
1092 | : a->inode < b->inode ? -1 |
|
|
1093 | : a->inode > b->inode ? 1 |
|
|
1094 | : 0; |
1067 | } |
1095 | } |
1068 | |
1096 | |
1069 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
1097 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
1070 | |
1098 | |
1071 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
1099 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
… | |
… | |
1077 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
1105 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
1078 | unsigned char *bit = bits; |
1106 | unsigned char *bit = bits; |
1079 | |
1107 | |
1080 | assert (CHAR_BIT == 8); |
1108 | assert (CHAR_BIT == 8); |
1081 | assert (sizeof (eio_dirent) * 8 < 256); |
1109 | assert (sizeof (eio_dirent) * 8 < 256); |
1082 | assert (offsetof (eio_dirent, inode)); /* we use 0 as sentinel */ |
1110 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
1083 | assert (offsetof (eio_dirent, score)); /* we use 0 as sentinel */ |
1111 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
1084 | |
1112 | |
1085 | if (size <= EIO_SORT_FAST) |
1113 | if (size <= EIO_SORT_FAST) |
1086 | return; |
1114 | return; |
1087 | |
1115 | |
1088 | /* first prepare an array of bits to test in our radix sort */ |
1116 | /* first prepare an array of bits to test in our radix sort */ |
… | |
… | |
1243 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1271 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
1244 | |
1272 | |
1245 | X_LOCK (wrklock); |
1273 | X_LOCK (wrklock); |
1246 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1274 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1247 | self->dirp = dirp = opendir (req->ptr1); |
1275 | self->dirp = dirp = opendir (req->ptr1); |
|
|
1276 | |
1248 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1277 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
1249 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1278 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
1250 | req->ptr2 = names = malloc (namesalloc); |
1279 | req->ptr2 = names = malloc (namesalloc); |
1251 | X_UNLOCK (wrklock); |
1280 | X_UNLOCK (wrklock); |
1252 | |
1281 | |
… | |
… | |
1264 | /* sort etc. */ |
1293 | /* sort etc. */ |
1265 | req->int1 = flags; |
1294 | req->int1 = flags; |
1266 | req->result = dentoffs; |
1295 | req->result = dentoffs; |
1267 | |
1296 | |
1268 | if (flags & EIO_READDIR_STAT_ORDER) |
1297 | if (flags & EIO_READDIR_STAT_ORDER) |
1269 | eio_dent_sort (dents, dentoffs, 0, inode_bits); /* sort by inode exclusively */ |
1298 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
1270 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1299 | else if (flags & EIO_READDIR_DIRS_FIRST) |
1271 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1300 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
1272 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1301 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
1273 | else |
1302 | else |
1274 | { |
1303 | { |
… | |
… | |
1276 | eio_dirent *oth = dents + dentoffs; |
1305 | eio_dirent *oth = dents + dentoffs; |
1277 | eio_dirent *dir = dents; |
1306 | eio_dirent *dir = dents; |
1278 | |
1307 | |
1279 | /* now partition dirs to the front, and non-dirs to the back */ |
1308 | /* now partition dirs to the front, and non-dirs to the back */ |
1280 | /* by walking from both sides and swapping if necessary */ |
1309 | /* by walking from both sides and swapping if necessary */ |
1281 | /* also clear score, so it doesn't influence sorting */ |
|
|
1282 | while (oth > dir) |
1310 | while (oth > dir) |
1283 | { |
1311 | { |
1284 | if (dir->type == EIO_DT_DIR) |
1312 | if (dir->type == EIO_DT_DIR) |
1285 | ++dir; |
1313 | ++dir; |
1286 | else if ((--oth)->type == EIO_DT_DIR) |
1314 | else if ((--oth)->type == EIO_DT_DIR) |
… | |
… | |
1289 | |
1317 | |
1290 | ++dir; |
1318 | ++dir; |
1291 | } |
1319 | } |
1292 | } |
1320 | } |
1293 | |
1321 | |
1294 | /* now sort the dirs only */ |
1322 | /* now sort the dirs only (dirs all have the same score) */ |
1295 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
1323 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
1296 | } |
1324 | } |
1297 | |
1325 | |
1298 | break; |
1326 | break; |
1299 | } |
1327 | } |
… | |
… | |
1512 | } |
1540 | } |
1513 | |
1541 | |
1514 | #endif |
1542 | #endif |
1515 | |
1543 | |
1516 | int |
1544 | int |
1517 | eio__mtouch (void *mem, size_t len, int flags) |
1545 | eio__mtouch (eio_req *req) |
1518 | { |
1546 | { |
|
|
1547 | void *mem = req->ptr2; |
|
|
1548 | size_t len = req->size; |
|
|
1549 | int flags = req->int1; |
|
|
1550 | |
1519 | eio_page_align (&mem, &len); |
1551 | eio_page_align (&mem, &len); |
1520 | |
1552 | |
1521 | { |
1553 | { |
1522 | intptr_t addr = (intptr_t)mem; |
1554 | intptr_t addr = (intptr_t)mem; |
1523 | intptr_t end = addr + len; |
1555 | intptr_t end = addr + len; |
1524 | intptr_t page = eio_pagesize (); |
1556 | intptr_t page = eio_pagesize (); |
1525 | |
1557 | |
1526 | if (addr < end) |
1558 | if (addr < end) |
1527 | if (flags & EIO_MT_MODIFY) /* modify */ |
1559 | if (flags & EIO_MT_MODIFY) /* modify */ |
1528 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1560 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
1529 | else |
1561 | else |
1530 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
1562 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
1531 | } |
1563 | } |
1532 | |
1564 | |
1533 | return 0; |
1565 | return 0; |
1534 | } |
1566 | } |
1535 | |
1567 | |
… | |
… | |
1709 | |
1741 | |
1710 | case EIO_SYNC: req->result = 0; sync (); break; |
1742 | case EIO_SYNC: req->result = 0; sync (); break; |
1711 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1743 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1712 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1744 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1713 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1745 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
1714 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1746 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
1715 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
1747 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
1716 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1748 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1717 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1749 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1718 | |
1750 | |
1719 | case EIO_READDIR: eio__scandir (req, self); break; |
1751 | case EIO_READDIR: eio__scandir (req, self); break; |
… | |
… | |
1763 | case EIO_NOP: |
1795 | case EIO_NOP: |
1764 | req->result = 0; |
1796 | req->result = 0; |
1765 | break; |
1797 | break; |
1766 | |
1798 | |
1767 | case EIO_CUSTOM: |
1799 | case EIO_CUSTOM: |
1768 | ((void (*)(eio_req *))req->feed) (req); |
1800 | req->feed (req); |
1769 | break; |
1801 | break; |
1770 | |
1802 | |
1771 | default: |
1803 | default: |
1772 | errno = ENOSYS; |
1804 | errno = ENOSYS; |
1773 | req->result = -1; |
1805 | req->result = -1; |
… | |
… | |
1994 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2026 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1995 | { |
2027 | { |
1996 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2028 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1997 | } |
2029 | } |
1998 | |
2030 | |
1999 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
2031 | eio_req *eio_custom (void (*)(eio_req *) execute, int pri, eio_cb cb, void *data); |
2000 | { |
2032 | { |
2001 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
2033 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2002 | } |
2034 | } |
2003 | |
2035 | |
2004 | #endif |
2036 | #endif |
2005 | |
2037 | |
2006 | eio_req *eio_grp (eio_cb cb, void *data) |
2038 | eio_req *eio_grp (eio_cb cb, void *data) |