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/* Test whether a file has a nontrivial access control list.
Copyright (C) 2002, 2003, 2005, 2006, 2007 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 and Andreas Gruenbacher. */
#include <config.h>
#include "acl.h"
#include "acl-internal.h"
/* Return 1 if NAME has a nontrivial access control list, 0 if NAME
only has no or a base access control list, and -1 (setting errno)
on error. SB must be set to the stat buffer of FILE. */
int
file_has_acl (char const *name, struct stat const *sb)
{
if (! S_ISLNK (sb->st_mode))
{
#if USE_ACL && HAVE_ACL_TRIVIAL
/* Solaris 10, which also has NFSv4 and ZFS style ACLs. */
return acl_trivial (name);
#elif USE_ACL && HAVE_ACL && defined GETACLCNT
/* Solaris 2.5 through Solaris 9, and contemporaneous versions of
HP-UX and Unixware. */
int n = acl (name, GETACLCNT, 0, NULL);
return n < 0 ? (errno == ENOSYS ? 0 : -1) : (MIN_ACL_ENTRIES < n);
#elif USE_ACL && HAVE_ACL_GET_FILE && HAVE_ACL_FREE
/* POSIX 1003.1e (draft 17 -- abandoned) specific version. */
int ret;
if (HAVE_ACL_EXTENDED_FILE)
ret = acl_extended_file (name);
else
{
acl_t acl = acl_get_file (name, ACL_TYPE_ACCESS);
if (acl)
{
ret = (3 < acl_entries (acl));
acl_free (acl);
if (ret == 0 && S_ISDIR (sb->st_mode))
{
acl = acl_get_file (name, ACL_TYPE_DEFAULT);
if (acl)
{
ret = (0 < acl_entries (acl));
acl_free (acl);
}
else
ret = -1;
}
}
else
ret = -1;
}
if (ret < 0)
return ACL_NOT_WELL_SUPPORTED (errno) ? 0 : -1;
return ret;
#endif
}
/* FIXME: Add support for AIX, Irix, and Tru64. Please see Samba's
source/lib/sysacls.c file for fix-related ideas. */
return 0;
}
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