1 /* Internals for openat-like functions.
3 Copyright (C) 2005-2006, 2009-2010 Free Software Foundation, Inc.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 /* written by Jim Meyering */
20 #ifndef _GL_HEADER_OPENAT_PRIV
21 #define _GL_HEADER_OPENAT_PRIV
26 #define OPENAT_BUFFER_SIZE 512
27 char *openat_proc_name (char buf[OPENAT_BUFFER_SIZE], int fd, char const *file);
29 /* Trying to access a BUILD_PROC_NAME file will fail on systems without
30 /proc support, and even on systems *with* ProcFS support. Return
31 nonzero if the failure may be legitimate, e.g., because /proc is not
32 readable, or the particular .../fd/N directory is not present. */
33 #define EXPECTED_ERRNO(Errno) \
34 ((Errno) == ENOTDIR || (Errno) == ENOENT \
35 || (Errno) == EPERM || (Errno) == EACCES \
36 || (Errno) == ENOSYS /* Solaris 8 */ \
37 || (Errno) == EOPNOTSUPP /* FreeBSD */)
39 /* Wrapper function shared among linkat and renameat. */
40 int at_func2 (int fd1, char const *file1,
41 int fd2, char const *file2,
42 int (*func) (char const *file1, char const *file2));
44 #endif /* _GL_HEADER_OPENAT_PRIV */