Dr. David Alan Gilbert | ee46c78 | 2019-11-28 12:22:49 +0000 | [diff] [blame] | 1 | /* |
| 2 | * FUSE: Filesystem in Userspace |
| 3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without |
| 5 | * modification, are permitted provided that the following conditions |
| 6 | * are met: |
| 7 | * 1. Redistributions of source code must retain the above copyright |
| 8 | * notice, this list of conditions and the following disclaimer. |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer in the |
| 11 | * documentation and/or other materials provided with the distribution. |
| 12 | * |
| 13 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 14 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 16 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 17 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 18 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 19 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 20 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 21 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 22 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 23 | * SUCH DAMAGE |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * Creates files on the underlying file system in response to a FUSE_MKNOD |
| 28 | * operation |
| 29 | */ |
| 30 | static int mknod_wrapper(int dirfd, const char *path, const char *link, |
Dr. David Alan Gilbert | 7387863 | 2019-12-09 19:53:47 +0000 | [diff] [blame] | 31 | int mode, dev_t rdev) |
Dr. David Alan Gilbert | ee46c78 | 2019-11-28 12:22:49 +0000 | [diff] [blame] | 32 | { |
Dr. David Alan Gilbert | 7387863 | 2019-12-09 19:53:47 +0000 | [diff] [blame] | 33 | int res; |
Dr. David Alan Gilbert | ee46c78 | 2019-11-28 12:22:49 +0000 | [diff] [blame] | 34 | |
Dr. David Alan Gilbert | 7387863 | 2019-12-09 19:53:47 +0000 | [diff] [blame] | 35 | if (S_ISREG(mode)) { |
| 36 | res = openat(dirfd, path, O_CREAT | O_EXCL | O_WRONLY, mode); |
| 37 | if (res >= 0) { |
| 38 | res = close(res); |
| 39 | } |
| 40 | } else if (S_ISDIR(mode)) { |
| 41 | res = mkdirat(dirfd, path, mode); |
| 42 | } else if (S_ISLNK(mode) && link != NULL) { |
| 43 | res = symlinkat(link, dirfd, path); |
| 44 | } else if (S_ISFIFO(mode)) { |
| 45 | res = mkfifoat(dirfd, path, mode); |
| 46 | } else { |
| 47 | res = mknodat(dirfd, path, mode, rdev); |
| 48 | } |
Dr. David Alan Gilbert | ee46c78 | 2019-11-28 12:22:49 +0000 | [diff] [blame] | 49 | |
Dr. David Alan Gilbert | 7387863 | 2019-12-09 19:53:47 +0000 | [diff] [blame] | 50 | return res; |
Dr. David Alan Gilbert | ee46c78 | 2019-11-28 12:22:49 +0000 | [diff] [blame] | 51 | } |