Mercurial > gnulib
view lib/symlinkat.c @ 17454:a2d511609297
sys_time: port to OpenBSD
* lib/sys_time.in.h: Simply delegate to the system's header
in the BSDish cases as well. Problem reported by Mike Miller in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-08/msg00016.html>.
* tests/test-sys_select.c, tests/test-sys_time.c (verify_tv_sec_type):
Allow platforms like 64-bit OpenBSD where timeval's tv_sec is
wider than time_t.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 10 Aug 2013 22:02:58 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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/* Create a symlink relative to an open directory. Copyright (C) 2009-2013 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 <unistd.h> #if !HAVE_SYMLINK /* Mingw lacks symlink, and it is more efficient to provide a trivial wrapper than to go through at-func.c to call rpl_symlink. */ # include <errno.h> int symlinkat (char const *path1 _GL_UNUSED, int fd _GL_UNUSED, char const *path2 _GL_UNUSED) { errno = ENOSYS; return -1; } #else /* HAVE_SYMLINK */ /* Our openat helper functions expect the directory parameter first, not second. These shims make life easier. */ /* Like symlink, but with arguments reversed. */ static int symlink_reversed (char const *file, char const *contents) { return symlink (contents, file); } /* Like symlinkat, but with arguments reversed. */ static int symlinkat_reversed (int fd, char const *file, char const *contents); # define AT_FUNC_NAME symlinkat_reversed # define AT_FUNC_F1 symlink_reversed # define AT_FUNC_POST_FILE_PARAM_DECLS , char const *contents # define AT_FUNC_POST_FILE_ARGS , contents # 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 /* Create a symlink FILE, in the directory open on descriptor FD, holding CONTENTS. If possible, do it without changing the working directory. Otherwise, resort to using save_cwd/fchdir, then symlink/restore_cwd. If either the save_cwd or the restore_cwd fails, then give a diagnostic and exit nonzero. */ int symlinkat (char const *contents, int fd, char const *file) { return symlinkat_reversed (fd, file, contents); } #endif /* HAVE_SYMLINK */