Mercurial > gnulib
view lib/mknodat.c @ 40086:d6de7c427079
stdopen: modernize and simplify
* lib/stdopen.c: Update copyright date
Do not include sys/types.h; no longer needed these days.
(stdopen): Use C99-style decl in loop. Return int errno
value, rather than just a bool. Do not worry about fd mismatches,
since the caller cares only if 0, 1, 2 are occupied.
* lib/stdopen.h: No need to include <stdbool.h>.
* m4/stdopen.m4: Remove.
* modules/stdopen: New file.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 05 Jan 2019 18:02:32 -0800 |
parents | b06060465f09 |
children |
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/* Create an inode relative to an open directory. Copyright (C) 2009-2019 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 <https://www.gnu.org/licenses/>. */ /* written by Eric Blake */ #include <config.h> #include <sys/stat.h> #if !HAVE_MKNOD # include <errno.h> /* Mingw lacks mknod, so this wrapper is trivial. */ int mknodat (int fd _GL_UNUSED, char const *path _GL_UNUSED, mode_t mode _GL_UNUSED, dev_t dev _GL_UNUSED) { errno = ENOSYS; return -1; } #else /* Create a file system node FILE relative to directory FD, with access permissions and file type in MODE, and device type in DEV. Usually, non-root applications can only create named fifos, with DEV set to 0. If possible, create the node without changing the working directory. Otherwise, resort to using save_cwd/fchdir, then mknod/restore_cwd. If either the save_cwd or the restore_cwd fails, then give a diagnostic and exit nonzero. */ # define AT_FUNC_NAME mknodat # define AT_FUNC_F1 mknod # define AT_FUNC_POST_FILE_PARAM_DECLS , mode_t mode, dev_t dev # define AT_FUNC_POST_FILE_ARGS , mode, dev # 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