Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/coreutils/src/gl/lib/fd-reopen.c |
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1 | /* Invoke open, but return either a desired file descriptor or -1. | - | ||||||||||||
2 | - | |||||||||||||
3 | Copyright (C) 2005-2018 Free Software Foundation, Inc. | - | ||||||||||||
4 | - | |||||||||||||
5 | This program is free software: you can redistribute it and/or modify | - | ||||||||||||
6 | it under the terms of the GNU General Public License as published by | - | ||||||||||||
7 | the Free Software Foundation, either version 3 of the License, or | - | ||||||||||||
8 | (at your option) any later version. | - | ||||||||||||
9 | - | |||||||||||||
10 | This program is distributed in the hope that it will be useful, | - | ||||||||||||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | - | ||||||||||||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | - | ||||||||||||
13 | GNU General Public License for more details. | - | ||||||||||||
14 | - | |||||||||||||
15 | You should have received a copy of the GNU General Public License | - | ||||||||||||
16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ | - | ||||||||||||
17 | - | |||||||||||||
18 | /* Written by Paul Eggert. */ | - | ||||||||||||
19 | - | |||||||||||||
20 | #include <config.h> | - | ||||||||||||
21 | - | |||||||||||||
22 | #include "fd-reopen.h" | - | ||||||||||||
23 | - | |||||||||||||
24 | #include <errno.h> | - | ||||||||||||
25 | #include <fcntl.h> | - | ||||||||||||
26 | #include <unistd.h> | - | ||||||||||||
27 | - | |||||||||||||
28 | /* Open a file to a particular file descriptor. This is like standard | - | ||||||||||||
29 | 'open', except it always returns DESIRED_FD if successful. */ | - | ||||||||||||
30 | - | |||||||||||||
31 | int | - | ||||||||||||
32 | fd_reopen (int desired_fd, char const *file, int flags, mode_t mode) | - | ||||||||||||
33 | { | - | ||||||||||||
34 | int fd = open (file, flags, mode); | - | ||||||||||||
35 | - | |||||||||||||
36 | if (fd == desired_fd || fd < 0)
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37 | return fd; executed 219553 times by 2 tests: return fd; Executed by:
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38 | else | - | ||||||||||||
39 | { | - | ||||||||||||
40 | int fd2 = dup2 (fd, desired_fd); | - | ||||||||||||
41 | int saved_errno = errno; | - | ||||||||||||
42 | close (fd); | - | ||||||||||||
43 | errno = saved_errno; | - | ||||||||||||
44 | return fd2; executed 4809 times by 4 tests: return fd2; Executed by:
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45 | } | - | ||||||||||||
46 | } | - | ||||||||||||
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