X-Git-Url: https://git.cworth.org/git?p=tar;a=blobdiff_plain;f=gnu%2Fsymlinkat.c;fp=gnu%2Fsymlinkat.c;h=fd57e538acafac414fbee636378ace083828b5fa;hp=0000000000000000000000000000000000000000;hb=ee168310ec4227174ace489bf5f81f8c2f91cde0;hpb=22f1eb8bc17e5be72dd23d42d6aaa60196ac22e6
diff --git a/gnu/symlinkat.c b/gnu/symlinkat.c
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+/* -*- buffer-read-only: t -*- vi: set ro: */
+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* Create a symlink relative to an open directory.
+ Copyright (C) 2009-2010 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 . */
+
+/* written by Eric Blake */
+
+#include
+
+#include
+
+#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
+
+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 */