| 1 | /* Copyright (C) 1991-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <errno.h> |
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| 19 | #include <fcntl.h> |
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| 20 | #include <stddef.h> |
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| 21 | #include <sys/stat.h> |
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| 22 | #include <sys/types.h> |
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| 23 | |
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| 24 | |
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| 25 | /* Create a named pipe (FIFO) named PATH relative to FD with |
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| 26 | protections MODE. */ |
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| 27 | int |
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| 28 | mkfifoat (int fd, const char *path, mode_t mode) |
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| 29 | { |
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| 30 | if (path == NULL) |
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| 31 | { |
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| 32 | __set_errno (EINVAL); |
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| 33 | return -1; |
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| 34 | } |
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| 35 | |
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| 36 | if (fd != AT_FDCWD && path[0] != '/') |
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| 37 | { |
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| 38 | /* Check FD is associated with a directory. */ |
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| 39 | struct stat64 st; |
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| 40 | if (__fstat64 (fd, &st) != 0) |
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| 41 | return -1; |
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| 42 | |
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| 43 | if (!S_ISDIR (st.st_mode)) |
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| 44 | { |
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| 45 | __set_errno (ENOTDIR); |
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| 46 | return -1; |
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| 47 | } |
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| 48 | } |
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| 49 | |
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| 50 | __set_errno (ENOSYS); |
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| 51 | return -1; |
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| 52 | } |
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| 53 | |
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| 54 | |
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| 55 | stub_warning (mkfifoat) |
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| 56 | |
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