mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-27 07:37:33 +00:00
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* Test whether ACLs are well supported on this system.
|
|
|
|
Copyright 2013-2017 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 Paul Eggert. */
|
|
|
|
#include <config.h>
|
|
|
|
#include <acl.h>
|
|
|
|
#include <errno.h>
|
|
|
|
/* Return true if errno value ERRNUM indicates that ACLs are well
|
|
supported on this system. ERRNUM should be an errno value obtained
|
|
after an ACL-related system call fails. */
|
|
bool
|
|
acl_errno_valid (int errnum)
|
|
{
|
|
/* Recognize some common errors such as from an NFS mount that does
|
|
not support ACLs, even when local drives do. */
|
|
switch (errnum)
|
|
{
|
|
case EBUSY: return false;
|
|
case EINVAL: return false;
|
|
#if defined __APPLE__ && defined __MACH__
|
|
case ENOENT: return false;
|
|
#endif
|
|
case ENOSYS: return false;
|
|
|
|
#if defined ENOTSUP && ENOTSUP != EOPNOTSUPP
|
|
# if ENOTSUP != ENOSYS /* Needed for the MS-Windows port of GNU Emacs. */
|
|
case ENOTSUP: return false;
|
|
# endif
|
|
#endif
|
|
|
|
case EOPNOTSUPP: return false;
|
|
default: return true;
|
|
}
|
|
}
|