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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-05-16 09:22:21 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2016-05-16 09:22:21 +0000 |
commit | d4fdeab4db0d0e699c8fbbb07f12c4e1f64d0f94 (patch) | |
tree | 72231a38ed1cdd48ac6e02acb8b3917acb9dbcf4 /gnu/mkfifoat.c | |
download | tar-tarball-tar-1.29.tar.gz |
Diffstat (limited to 'gnu/mkfifoat.c')
-rw-r--r-- | gnu/mkfifoat.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/gnu/mkfifoat.c b/gnu/mkfifoat.c new file mode 100644 index 0000000..4d23590 --- /dev/null +++ b/gnu/mkfifoat.c @@ -0,0 +1,55 @@ +/* Create a named fifo relative to an open directory. + Copyright (C) 2009-2015 Free Software Foundation, Inc. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* written by Eric Blake */ + +#include <config.h> + +#include <sys/stat.h> + +#if !HAVE_MKFIFO + +# include <errno.h> + +/* Mingw lacks mkfifo, so this wrapper is trivial. */ + +int +mkfifoat (int fd _GL_UNUSED, char const *path _GL_UNUSED, + mode_t mode _GL_UNUSED) +{ + errno = ENOSYS; + return -1; +} + +#else /* HAVE_MKFIFO */ + +/* Create a named fifo FILE relative to directory FD, with access + permissions in MODE. If possible, do it without changing the + working directory. Otherwise, resort to using save_cwd/fchdir, + then mkfifo/restore_cwd. If either the save_cwd or the restore_cwd + fails, then give a diagnostic and exit nonzero. */ + +# define AT_FUNC_NAME mkfifoat +# define AT_FUNC_F1 mkfifo +# define AT_FUNC_POST_FILE_PARAM_DECLS , mode_t mode +# define AT_FUNC_POST_FILE_ARGS , mode +# include "at-func.c" +# undef AT_FUNC_NAME +# undef AT_FUNC_F1 +# undef AT_FUNC_POST_FILE_PARAM_DECLS +# undef AT_FUNC_POST_FILE_ARGS + +#endif /* HAVE_MKFIFO */ |