| 1 | /* |
1 | /* |
| 2 | * libeio implementation |
2 | * libeio implementation |
| 3 | * |
3 | * |
| 4 | * Copyright (c) 2007,2008,2009,2010,2011,2012,2013,2016,2017,2018 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 | * |
| … | |
… | |
| 1679 | return EIO_INVALID_WD; |
1679 | return EIO_INVALID_WD; |
| 1680 | |
1680 | |
| 1681 | #if HAVE_AT |
1681 | #if HAVE_AT |
| 1682 | fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY | O_NONBLOCK); |
1682 | fd = openat (WD2FD (wd), path, O_CLOEXEC | O_SEARCH | O_DIRECTORY | O_NONBLOCK); |
| 1683 | |
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 | } |
|
|
1697 | |
| 1684 | if (fd < 0) |
1698 | if (fd < 0) |
| 1685 | return EIO_INVALID_WD; |
1699 | return EIO_INVALID_WD; |
| 1686 | #endif |
1700 | #endif |
| 1687 | |
1701 | |
| 1688 | res = malloc (sizeof (*res) + len); /* one extra 0-byte */ |
1702 | res = malloc (sizeof (*res) + len); /* one extra 0-byte */ |
