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64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/* acl.c - access control lists
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Copyright (C) 2002, 2003 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Written by Paul Eggert. */
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifndef S_ISLNK
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# define S_ISLNK(Mode) 0
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#endif
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#include "acl.h"
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#include <errno.h>
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#ifndef ENOSYS
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# define ENOSYS (-1)
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#endif
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#ifndef MIN_ACL_ENTRIES
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# define MIN_ACL_ENTRIES 4
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#endif
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/* Return 1 if PATH has a nontrivial access control list, 0 if not,
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and -1 (setting errno) if an error is encountered. */
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int
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file_has_acl (char const *path, struct stat const *pathstat)
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{
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/* FIXME: This implementation should work on recent-enough versions
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of HP-UX, Solaris, and Unixware, but it simply returns 0 with
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POSIX 1003.1e (draft 17 -- abandoned), AIX, GNU/Linux, Irix, and
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Tru64. Please see Samba's source/lib/sysacls.c file for
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fix-related ideas. */
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#if HAVE_ACL && defined GETACLCNT
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if (! S_ISLNK (pathstat->st_mode))
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{
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int n = acl (path, GETACLCNT, 0, NULL);
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return n < 0 ? (errno == ENOSYS ? 0 : -1) : (MIN_ACL_ENTRIES < n);
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}
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#endif
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return 0;
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}
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