1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017,2018,2019 Marc Alexander Lehmann <libeio@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
… | |
… | |
231 | #define D_NAME(entp) entp.cFileName |
231 | #define D_NAME(entp) entp.cFileName |
232 | #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) |
232 | #define D_TYPE(entp) (entp.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ? DT_DIR : DT_REG) |
233 | |
233 | |
234 | #else |
234 | #else |
235 | |
235 | |
|
|
236 | #include <sys/ioctl.h> |
236 | #include <sys/time.h> |
237 | #include <sys/time.h> |
237 | #include <sys/select.h> |
238 | #include <sys/select.h> |
238 | #include <unistd.h> |
239 | #include <unistd.h> |
239 | #include <signal.h> |
240 | #include <signal.h> |
240 | #include <dirent.h> |
241 | #include <dirent.h> |
… | |
… | |
299 | # else |
300 | # else |
300 | # error sendfile support requested but not available |
301 | # error sendfile support requested but not available |
301 | # endif |
302 | # endif |
302 | #endif |
303 | #endif |
303 | |
304 | |
|
|
305 | #if HAVE_RENAMEAT2 |
|
|
306 | # include <sys/syscall.h> |
|
|
307 | # include <linux/fs.h> |
|
|
308 | #endif |
|
|
309 | |
304 | #ifndef D_TYPE |
310 | #ifndef D_TYPE |
305 | # define D_TYPE(de) 0 |
311 | # define D_TYPE(de) 0 |
306 | #endif |
312 | #endif |
307 | #ifndef D_INO |
313 | #ifndef D_INO |
308 | # define D_INO(de) 0 |
314 | # define D_INO(de) 0 |
… | |
… | |
317 | #endif |
323 | #endif |
318 | |
324 | |
319 | /* used for readlink etc. */ |
325 | /* used for readlink etc. */ |
320 | #ifndef PATH_MAX |
326 | #ifndef PATH_MAX |
321 | # define PATH_MAX 0 |
327 | # define PATH_MAX 0 |
|
|
328 | #endif |
|
|
329 | |
|
|
330 | #ifndef O_CLOEXEC |
|
|
331 | #define O_CLOEXEC 0 |
|
|
332 | #endif |
|
|
333 | |
|
|
334 | #ifndef O_NONBLOCK |
|
|
335 | #define O_NONBLOCK 0 |
|
|
336 | #endif |
|
|
337 | |
|
|
338 | #ifndef O_SEARCH |
|
|
339 | #define O_SEARCH O_RDONLY |
|
|
340 | #endif |
|
|
341 | |
|
|
342 | #ifndef O_DIRECTORY |
|
|
343 | #define O_DIRECTORY 0 |
322 | #endif |
344 | #endif |
323 | |
345 | |
324 | #ifndef EIO_PATH_MIN |
346 | #ifndef EIO_PATH_MIN |
325 | # define EIO_PATH_MIN 8160 |
347 | # define EIO_PATH_MIN 8160 |
326 | #endif |
348 | #endif |
… | |
… | |
344 | struct etp_tmpbuf; |
366 | struct etp_tmpbuf; |
345 | |
367 | |
346 | #if _POSIX_VERSION >= 200809L |
368 | #if _POSIX_VERSION >= 200809L |
347 | #define HAVE_AT 1 |
369 | #define HAVE_AT 1 |
348 | #define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD) |
370 | #define WD2FD(wd) ((wd) ? (wd)->fd : AT_FDCWD) |
349 | #ifndef O_SEARCH |
|
|
350 | #define O_SEARCH O_RDONLY |
|
|
351 | #endif |
|
|
352 | #else |
371 | #else |
353 | #define HAVE_AT 0 |
372 | #define HAVE_AT 0 |
354 | static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path); |
373 | static const char *wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path); |
355 | #endif |
374 | #endif |
356 | |
375 | |
… | |
… | |
546 | return etp_poll (EIO_POOL); |
565 | return etp_poll (EIO_POOL); |
547 | } |
566 | } |
548 | |
567 | |
549 | /*****************************************************************************/ |
568 | /*****************************************************************************/ |
550 | /* work around various missing functions */ |
569 | /* work around various missing functions */ |
|
|
570 | |
|
|
571 | #if HAVE_POSIX_CLOSE && !__linux |
|
|
572 | # define eio__close(fd) posix_close (fd, 0) |
|
|
573 | #else |
|
|
574 | # define eio__close(fd) close (fd) |
|
|
575 | #endif |
|
|
576 | |
|
|
577 | /* close() without disturbing errno */ |
|
|
578 | static void |
|
|
579 | silent_close (int fd) |
|
|
580 | { |
|
|
581 | int saved_errno = errno; |
|
|
582 | eio__close (fd); |
|
|
583 | errno = saved_errno; |
|
|
584 | } |
551 | |
585 | |
552 | #ifndef HAVE_UTIMES |
586 | #ifndef HAVE_UTIMES |
553 | |
587 | |
554 | # undef utimes |
588 | # undef utimes |
555 | # define utimes(path,times) eio__utimes (path, times) |
589 | # define utimes(path,times) eio__utimes (path, times) |
… | |
… | |
868 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
902 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
869 | extern int mallopt (int, int); |
903 | extern int mallopt (int, int); |
870 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
904 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
871 | #endif |
905 | #endif |
872 | |
906 | |
|
|
907 | #ifndef MCL_ONFAULT |
|
|
908 | if (flags & EIO_MCL_ONFAULT) |
|
|
909 | return EIO_ERRNO (EINVAL, -1); |
|
|
910 | #define MCL_ONFAULT 4 |
|
|
911 | #endif |
|
|
912 | |
873 | if (EIO_MCL_CURRENT != MCL_CURRENT |
913 | if (EIO_MCL_CURRENT != MCL_CURRENT |
874 | || EIO_MCL_FUTURE != MCL_FUTURE) |
914 | || EIO_MCL_FUTURE != MCL_FUTURE |
|
|
915 | || EIO_MCL_ONFAULT != MCL_ONFAULT) |
875 | { |
916 | { |
876 | flags = 0 |
917 | flags = 0 |
877 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
918 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
878 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
919 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0) |
|
|
920 | | (flags & EIO_MCL_ONFAULT ? MCL_ONFAULT : 0) |
|
|
921 | ; |
879 | } |
922 | } |
880 | |
923 | |
881 | return mlockall (flags); |
924 | return mlockall (flags); |
882 | } |
925 | } |
883 | #endif |
926 | #endif |
… | |
… | |
934 | intptr_t end = addr + len; |
977 | intptr_t end = addr + len; |
935 | intptr_t page = eio_pagesize (); |
978 | intptr_t page = eio_pagesize (); |
936 | |
979 | |
937 | if (addr < end) |
980 | if (addr < end) |
938 | if (flags & EIO_MT_MODIFY) /* modify */ |
981 | if (flags & EIO_MT_MODIFY) /* modify */ |
939 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
982 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < end && !EIO_CANCELLED (req)); |
940 | else |
983 | else |
941 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
984 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < end && !EIO_CANCELLED (req)); |
942 | } |
985 | } |
943 | |
986 | |
944 | return 0; |
987 | return 0; |
945 | } |
988 | } |
946 | |
989 | |
… | |
… | |
1012 | if (fd >= 0) |
1055 | if (fd >= 0) |
1013 | { |
1056 | { |
1014 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1057 | sprintf (tmp1, "/proc/self/fd/%d", fd); |
1015 | req->result = readlink (tmp1, res, EIO_PATH_MAX); |
1058 | req->result = readlink (tmp1, res, EIO_PATH_MAX); |
1016 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
1059 | /* here we should probably stat the open file and the disk file, to make sure they still match */ |
1017 | close (fd); |
1060 | eio__close (fd); |
1018 | |
1061 | |
1019 | if (req->result > 0) |
1062 | if (req->result > 0) |
1020 | goto done; |
1063 | goto done; |
1021 | } |
1064 | } |
1022 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
1065 | else if (errno == ELOOP || errno == ENAMETOOLONG || errno == ENOENT || errno == ENOTDIR || errno == EIO) |
… | |
… | |
1370 | return; |
1413 | return; |
1371 | } |
1414 | } |
1372 | } |
1415 | } |
1373 | #else |
1416 | #else |
1374 | #if HAVE_AT |
1417 | #if HAVE_AT |
1375 | if (req->wd) |
|
|
1376 | { |
1418 | { |
1377 | int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY); |
1419 | int fd = openat (WD2FD (req->wd), req->ptr1, O_CLOEXEC | O_SEARCH | O_DIRECTORY | O_NONBLOCK); |
1378 | |
1420 | |
1379 | if (fd < 0) |
1421 | if (fd < 0) |
|
|
1422 | return; |
|
|
1423 | |
|
|
1424 | dirp = fdopendir (fd); |
|
|
1425 | |
|
|
1426 | if (!dirp) |
|
|
1427 | { |
|
|
1428 | silent_close (fd); |
1380 | return; |
1429 | return; |
1381 | |
|
|
1382 | dirp = fdopendir (fd); |
|
|
1383 | |
|
|
1384 | if (!dirp) |
|
|
1385 | close (fd); |
|
|
1386 | } |
1430 | } |
1387 | else |
1431 | } |
1388 | dirp = opendir (req->ptr1); |
|
|
1389 | #else |
1432 | #else |
1390 | dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1)); |
1433 | dirp = opendir (wd_expand (&self->tmpbuf, req->wd, req->ptr1)); |
|
|
1434 | |
|
|
1435 | if (!dirp) |
|
|
1436 | return; |
1391 | #endif |
1437 | #endif |
1392 | |
|
|
1393 | if (!dirp) |
|
|
1394 | return; |
|
|
1395 | #endif |
1438 | #endif |
1396 | |
1439 | |
1397 | if (req->flags & EIO_FLAG_PTR1_FREE) |
1440 | if (req->flags & EIO_FLAG_PTR1_FREE) |
1398 | free (req->ptr1); |
1441 | free (req->ptr1); |
1399 | |
1442 | |
… | |
… | |
1596 | /* keep the absolute path in string form at all times */ |
1639 | /* keep the absolute path in string form at all times */ |
1597 | /* fuck yeah. */ |
1640 | /* fuck yeah. */ |
1598 | |
1641 | |
1599 | #if !HAVE_AT |
1642 | #if !HAVE_AT |
1600 | |
1643 | |
1601 | /* a bit like realpath, but usually faster because it doesn'T have to return */ |
1644 | /* a bit like realpath, but usually faster because it doesn't have to return */ |
1602 | /* an absolute or canonical path */ |
1645 | /* an absolute or canonical path */ |
1603 | static const char * |
1646 | static const char * |
1604 | wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path) |
1647 | wd_expand (struct etp_tmpbuf *tmpbuf, eio_wd wd, const char *path) |
1605 | { |
1648 | { |
1606 | if (!wd || *path == '/') |
1649 | if (!wd || *path == '/') |
… | |
… | |
1634 | |
1677 | |
1635 | if (len < 0) |
1678 | if (len < 0) |
1636 | return EIO_INVALID_WD; |
1679 | return EIO_INVALID_WD; |
1637 | |
1680 | |
1638 | #if HAVE_AT |
1681 | #if HAVE_AT |
1639 | fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY); |
1682 | fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY | O_NONBLOCK); |
|
|
1683 | |
|
|
1684 | /* 0 is a valid fd, but we use it for EIO_CWD, so in the very unlikely */ |
|
|
1685 | /* case of fd 0 being available (almost certainly an a pplication bug) */ |
|
|
1686 | /* make sure we use another fd value */ |
|
|
1687 | #if EIO_CWD |
|
|
1688 | error EIO_CWD must be 0 |
|
|
1689 | #endif |
|
|
1690 | if (ecb_expect_false (fd == 0)) |
|
|
1691 | { |
|
|
1692 | int fd2 = fcntl (fd, F_DUPFD_CLOEXEC ? F_DUPFD_CLOEXEC : F_DUPFD); |
|
|
1693 | fcntl (fd2, F_SETFD, FD_CLOEXEC); |
|
|
1694 | eio__close (fd); |
|
|
1695 | fd = fd2; |
|
|
1696 | } |
1640 | |
1697 | |
1641 | if (fd < 0) |
1698 | if (fd < 0) |
1642 | return EIO_INVALID_WD; |
1699 | return EIO_INVALID_WD; |
1643 | #endif |
1700 | #endif |
1644 | |
1701 | |
… | |
… | |
1656 | } |
1713 | } |
1657 | |
1714 | |
1658 | eio_wd |
1715 | eio_wd |
1659 | eio_wd_open_sync (eio_wd wd, const char *path) |
1716 | eio_wd_open_sync (eio_wd wd, const char *path) |
1660 | { |
1717 | { |
1661 | struct etp_tmpbuf tmpbuf = { }; |
1718 | struct etp_tmpbuf tmpbuf = { 0 }; |
1662 | wd = eio__wd_open_sync (&tmpbuf, wd, path); |
1719 | wd = eio__wd_open_sync (&tmpbuf, wd, path); |
1663 | free (tmpbuf.ptr); |
1720 | free (tmpbuf.ptr); |
1664 | |
1721 | |
1665 | return wd; |
1722 | return wd; |
1666 | } |
1723 | } |
… | |
… | |
1669 | eio_wd_close_sync (eio_wd wd) |
1726 | eio_wd_close_sync (eio_wd wd) |
1670 | { |
1727 | { |
1671 | if (wd != EIO_INVALID_WD && wd != EIO_CWD) |
1728 | if (wd != EIO_INVALID_WD && wd != EIO_CWD) |
1672 | { |
1729 | { |
1673 | #if HAVE_AT |
1730 | #if HAVE_AT |
1674 | close (wd->fd); |
1731 | eio__close (wd->fd); |
1675 | #endif |
1732 | #endif |
1676 | free (wd); |
1733 | free (wd); |
1677 | } |
1734 | } |
1678 | } |
1735 | } |
1679 | |
1736 | |
1680 | #if HAVE_AT |
1737 | #if HAVE_AT |
1681 | |
1738 | |
|
|
1739 | static int |
|
|
1740 | eio__renameat2 (int olddirfd, const char *oldpath, int newdirfd, const char *newpath, unsigned int flags) |
|
|
1741 | { |
|
|
1742 | #if HAVE_RENAMEAT2 |
|
|
1743 | return syscall (SYS_renameat2, olddirfd, oldpath, newdirfd, newpath, flags); |
|
|
1744 | #else |
|
|
1745 | if (flags) |
|
|
1746 | return EIO_ENOSYS (); |
|
|
1747 | |
|
|
1748 | return renameat (olddirfd, oldpath, newdirfd, newpath); |
|
|
1749 | #endif |
|
|
1750 | } |
|
|
1751 | |
1682 | /* they forgot these */ |
1752 | /* they forgot these */ |
1683 | |
1753 | |
1684 | static int |
1754 | static int |
1685 | eio__truncateat (int dirfd, const char *path, off_t length) |
1755 | eio__truncateat (int dirfd, const char *path, off_t length) |
1686 | { |
1756 | { |
1687 | int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC); |
1757 | int fd = openat (dirfd, path, O_WRONLY | O_CLOEXEC | O_NONBLOCK); |
1688 | int res; |
1758 | int res; |
1689 | |
1759 | |
1690 | if (fd < 0) |
1760 | if (fd < 0) |
1691 | return fd; |
1761 | return fd; |
1692 | |
1762 | |
1693 | res = ftruncate (fd, length); |
1763 | res = ftruncate (fd, length); |
1694 | close (fd); |
1764 | silent_close (fd); |
1695 | return res; |
1765 | return res; |
1696 | } |
1766 | } |
1697 | |
1767 | |
1698 | static int |
1768 | static int |
1699 | eio__statvfsat (int dirfd, const char *path, struct statvfs *buf) |
1769 | eio__statvfsat (int dirfd, const char *path, struct statvfs *buf) |
1700 | { |
1770 | { |
1701 | int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC); |
1771 | int fd = openat (dirfd, path, O_SEARCH | O_CLOEXEC | O_NONBLOCK); |
1702 | int res; |
1772 | int res; |
1703 | |
1773 | |
1704 | if (fd < 0) |
1774 | if (fd < 0) |
1705 | return fd; |
1775 | return fd; |
1706 | |
1776 | |
1707 | res = fstatvfs (fd, buf); |
1777 | res = fstatvfs (fd, buf); |
1708 | close (fd); |
1778 | silent_close (fd); |
1709 | return res; |
1779 | return res; |
1710 | |
|
|
1711 | } |
1780 | } |
1712 | |
1781 | |
1713 | #endif |
1782 | #endif |
1714 | |
1783 | |
1715 | /*****************************************************************************/ |
1784 | /*****************************************************************************/ |
… | |
… | |
1723 | req->ptr2 = malloc (len); \ |
1792 | req->ptr2 = malloc (len); \ |
1724 | if (!req->ptr2) \ |
1793 | if (!req->ptr2) \ |
1725 | { \ |
1794 | { \ |
1726 | errno = ENOMEM; \ |
1795 | errno = ENOMEM; \ |
1727 | req->result = -1; \ |
1796 | req->result = -1; \ |
1728 | break; \ |
1797 | goto alloc_fail; \ |
1729 | } \ |
1798 | } \ |
1730 | } |
1799 | } |
1731 | |
1800 | |
1732 | /*****************************************************************************/ |
1801 | /*****************************************************************************/ |
|
|
1802 | |
|
|
1803 | static void |
|
|
1804 | eio__slurp (int fd, eio_req *req) |
|
|
1805 | { |
|
|
1806 | req->result = fd; |
|
|
1807 | |
|
|
1808 | if (fd < 0) |
|
|
1809 | return; |
|
|
1810 | |
|
|
1811 | if (req->offs < 0 || !req->size) /* do we need the size? */ |
|
|
1812 | { |
|
|
1813 | off_t size = lseek (fd, 0, SEEK_END); |
|
|
1814 | |
|
|
1815 | if (req->offs < 0) |
|
|
1816 | req->offs += size; |
|
|
1817 | |
|
|
1818 | if (!req->size) |
|
|
1819 | req->size = size - req->offs; |
|
|
1820 | } |
|
|
1821 | |
|
|
1822 | ALLOC (req->size); |
|
|
1823 | req->result = pread (fd, req->ptr2, req->size, req->offs); |
|
|
1824 | |
|
|
1825 | silent_close (fd); |
|
|
1826 | |
|
|
1827 | alloc_fail: |
|
|
1828 | ; |
|
|
1829 | } |
1733 | |
1830 | |
1734 | int ecb_cold |
1831 | int ecb_cold |
1735 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1832 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1736 | { |
1833 | { |
1737 | eio_want_poll_cb = want_poll; |
1834 | eio_want_poll_cb = want_poll; |
… | |
… | |
1835 | req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break; |
1932 | req->result = fstatat (dirfd, req->ptr1, (EIO_STRUCT_STAT *)req->ptr2, AT_SYMLINK_NOFOLLOW); break; |
1836 | case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break; |
1933 | case EIO_CHOWN: req->result = fchownat (dirfd, req->ptr1, req->int2, req->int3, 0); break; |
1837 | case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break; |
1934 | case EIO_CHMOD: req->result = fchmodat (dirfd, req->ptr1, (mode_t)req->int2, 0); break; |
1838 | case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break; |
1935 | case EIO_TRUNCATE: req->result = eio__truncateat (dirfd, req->ptr1, req->offs); break; |
1839 | case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break; |
1936 | case EIO_OPEN: req->result = openat (dirfd, req->ptr1, req->int1, (mode_t)req->int2); break; |
|
|
1937 | case EIO_SLURP: eio__slurp ( openat (dirfd, req->ptr1, O_RDONLY | O_CLOEXEC), req); break; |
1840 | |
1938 | |
1841 | case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break; |
1939 | case EIO_UNLINK: req->result = unlinkat (dirfd, req->ptr1, 0); break; |
1842 | case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */ |
1940 | case EIO_RMDIR: /* complications arise because "." cannot be removed, so we might have to expand */ |
1843 | req->result = req->wd && SINGLEDOT (req->ptr1) |
1941 | req->result = req->wd && SINGLEDOT (req->ptr1) |
1844 | ? rmdir (req->wd->str) |
1942 | ? rmdir (req->wd->str) |
1845 | : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break; |
1943 | : unlinkat (dirfd, req->ptr1, AT_REMOVEDIR); break; |
1846 | case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break; |
1944 | case EIO_MKDIR: req->result = mkdirat (dirfd, req->ptr1, (mode_t)req->int2); break; |
|
|
1945 | case EIO_RENAME: req->result = eio__renameat2 ( |
|
|
1946 | dirfd, |
1847 | case EIO_RENAME: /* complications arise because "." cannot be renamed, so we might have to expand */ |
1947 | /* complications arise because "." cannot be renamed, so we might have to expand */ |
1848 | req->result = req->wd && SINGLEDOT (req->ptr1) |
1948 | req->wd && SINGLEDOT (req->ptr1) ? req->wd->str : req->ptr1, |
1849 | ? rename (req->wd->str, req->ptr2) |
1949 | WD2FD ((eio_wd)req->int3), |
1850 | : renameat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2); break; |
1950 | req->ptr2, |
|
|
1951 | req->int2 |
|
|
1952 | ); |
|
|
1953 | break; |
1851 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
1954 | case EIO_LINK: req->result = linkat (dirfd, req->ptr1, WD2FD ((eio_wd)req->int3), req->ptr2, 0); break; |
1852 | case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break; |
1955 | case EIO_SYMLINK: req->result = symlinkat (req->ptr1, dirfd, req->ptr2); break; |
1853 | case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1956 | case EIO_MKNOD: req->result = mknodat (dirfd, req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1854 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1957 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1855 | req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
1958 | req->result = eio__statvfsat (dirfd, req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
… | |
… | |
1893 | req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break; |
1996 | req->result = lstat (path , (EIO_STRUCT_STAT *)req->ptr2); break; |
1894 | case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break; |
1997 | case EIO_CHOWN: req->result = chown (path , req->int2, req->int3); break; |
1895 | case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break; |
1998 | case EIO_CHMOD: req->result = chmod (path , (mode_t)req->int2); break; |
1896 | case EIO_TRUNCATE: req->result = truncate (path , req->offs); break; |
1999 | case EIO_TRUNCATE: req->result = truncate (path , req->offs); break; |
1897 | case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break; |
2000 | case EIO_OPEN: req->result = open (path , req->int1, (mode_t)req->int2); break; |
|
|
2001 | case EIO_SLURP: eio__slurp ( open (path , O_RDONLY | O_CLOEXEC), req); break; |
1898 | |
2002 | |
1899 | case EIO_UNLINK: req->result = unlink (path ); break; |
2003 | case EIO_UNLINK: req->result = unlink (path ); break; |
1900 | case EIO_RMDIR: req->result = rmdir (path ); break; |
2004 | case EIO_RMDIR: req->result = rmdir (path ); break; |
1901 | case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break; |
2005 | case EIO_MKDIR: req->result = mkdir (path , (mode_t)req->int2); break; |
1902 | case EIO_RENAME: req->result = rename (path , req->ptr2); break; |
2006 | case EIO_RENAME: req->result = req->int2 ? EIO_ENOSYS () : rename (path, req->ptr2); break; |
1903 | case EIO_LINK: req->result = link (path , req->ptr2); break; |
2007 | case EIO_LINK: req->result = link (path , req->ptr2); break; |
1904 | case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break; |
2008 | case EIO_SYMLINK: req->result = symlink (path , req->ptr2); break; |
1905 | case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break; |
2009 | case EIO_MKNOD: req->result = mknod (path , (mode_t)req->int2, (dev_t)req->offs); break; |
1906 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
2010 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
1907 | req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break; |
2011 | req->result = statvfs (path , (EIO_STRUCT_STATVFS *)req->ptr2); break; |
… | |
… | |
1955 | |
2059 | |
1956 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
2060 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1957 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
2061 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1958 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
2062 | case EIO_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break; |
1959 | |
2063 | |
1960 | case EIO_CLOSE: req->result = close (req->int1); break; |
2064 | case EIO_CLOSE: req->result = eio__close (req->int1); break; |
1961 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
2065 | case EIO_DUP2: req->result = dup2 (req->int1, req->int2); break; |
1962 | case EIO_SYNC: req->result = 0; sync (); break; |
2066 | case EIO_SYNC: req->result = 0; sync (); break; |
1963 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
2067 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1964 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
2068 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1965 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
2069 | case EIO_SYNCFS: req->result = eio__syncfs (req->int1); break; |
… | |
… | |
2003 | default: |
2107 | default: |
2004 | req->result = EIO_ENOSYS (); |
2108 | req->result = EIO_ENOSYS (); |
2005 | break; |
2109 | break; |
2006 | } |
2110 | } |
2007 | |
2111 | |
|
|
2112 | alloc_fail: |
2008 | req->errorno = errno; |
2113 | req->errorno = errno; |
2009 | } |
2114 | } |
2010 | |
2115 | |
2011 | #ifndef EIO_NO_WRAPPERS |
2116 | #ifndef EIO_NO_WRAPPERS |
2012 | |
2117 | |
… | |
… | |
2265 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2370 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2266 | { |
2371 | { |
2267 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2372 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2268 | } |
2373 | } |
2269 | |
2374 | |
|
|
2375 | eio_req *eio_slurp (const char *path, void *buf, size_t length, off_t offset, int pri, eio_cb cb, void *data) |
|
|
2376 | { |
|
|
2377 | REQ (EIO_SLURP); PATH; req->offs = offset; req->size = length; req->ptr2 = buf; SEND; |
|
|
2378 | } |
|
|
2379 | |
2270 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
2380 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
2271 | { |
2381 | { |
2272 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2382 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
2273 | } |
2383 | } |
2274 | |
2384 | |
… | |
… | |
2331 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2441 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2332 | { |
2442 | { |
2333 | return eio__sendfile (ofd, ifd, offset, count); |
2443 | return eio__sendfile (ofd, ifd, offset, count); |
2334 | } |
2444 | } |
2335 | |
2445 | |
|
|
2446 | int eio_mlockall_sync (int flags) |
|
|
2447 | { |
|
|
2448 | return eio__mlockall (flags); |
|
|
2449 | } |
|
|
2450 | |