| Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/coreutils/src/gnulib/lib/pipe-safer.c |
| Source code | Switch to Preprocessed file |
| Line | Source | Count | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | /* Invoke pipe, but avoid some glitches. | - | ||||||
| 2 | Copyright (C) 2005-2006, 2009-2018 Free Software Foundation, Inc. | - | ||||||
| 3 | - | |||||||
| 4 | This program is free software: you can redistribute it and/or modify | - | ||||||
| 5 | it under the terms of the GNU General Public License as published by | - | ||||||
| 6 | the Free Software Foundation; either version 3 of the License, or | - | ||||||
| 7 | (at your option) any later version. | - | ||||||
| 8 | - | |||||||
| 9 | This program is distributed in the hope that it will be useful, | - | ||||||
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | - | ||||||
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | - | ||||||
| 12 | GNU General Public License for more details. | - | ||||||
| 13 | - | |||||||
| 14 | You should have received a copy of the GNU General Public License | - | ||||||
| 15 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ | - | ||||||
| 16 | - | |||||||
| 17 | /* Written by Jim Meyering. */ | - | ||||||
| 18 | - | |||||||
| 19 | #include <config.h> | - | ||||||
| 20 | - | |||||||
| 21 | #include "unistd-safer.h" | - | ||||||
| 22 | - | |||||||
| 23 | #include <unistd.h> | - | ||||||
| 24 | #include <errno.h> | - | ||||||
| 25 | - | |||||||
| 26 | /* Like pipe, but ensure that neither of the file descriptors is | - | ||||||
| 27 | STDIN_FILENO, STDOUT_FILENO, or STDERR_FILENO. Fail with ENOSYS on | - | ||||||
| 28 | platforms that lack pipe. */ | - | ||||||
| 29 | - | |||||||
| 30 | int | - | ||||||
| 31 | pipe_safer (int fd[2]) | - | ||||||
| 32 | { | - | ||||||
| 33 | #if HAVE_PIPE | - | ||||||
| 34 | if (pipe (fd) == 0)
| 0 | ||||||
| 35 | { | - | ||||||
| 36 | int i; | - | ||||||
| 37 | for (i = 0; i < 2; i++)
| 0 | ||||||
| 38 | { | - | ||||||
| 39 | fd[i] = fd_safer (fd[i]); | - | ||||||
| 40 | if (fd[i] < 0)
| 0 | ||||||
| 41 | { | - | ||||||
| 42 | int e = errno; | - | ||||||
| 43 | close (fd[1 - i]); | - | ||||||
| 44 | errno = e; | - | ||||||
| 45 | return -1; never executed: return -1; | 0 | ||||||
| 46 | } | - | ||||||
| 47 | } never executed: end of block | 0 | ||||||
| 48 | - | |||||||
| 49 | return 0; never executed: return 0; | 0 | ||||||
| 50 | } | - | ||||||
| 51 | #else | - | ||||||
| 52 | errno = ENOSYS; | - | ||||||
| 53 | #endif | - | ||||||
| 54 | - | |||||||
| 55 | return -1; never executed: return -1; | 0 | ||||||
| 56 | } | - | ||||||
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