?? acl.c
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/* acl.c - access control lists Copyright (C) 2002 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 2, 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, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Written by Paul Eggert. */#if HAVE_CONFIG_H# include <config.h>#endif#include <sys/stat.h>#ifndef S_ISLNK# define S_ISLNK(Mode) 0#endif#include "acl.h"#include <errno.h>#ifndef ENOSYS# define ENOSYS (-1)#endif#ifndef MIN_ACL_ENTRIES# define MIN_ACL_ENTRIES 4#endif/* Return 1 if PATH has a nontrivial access control list, 0 if not, and -1 (setting errno) if an error is encountered. */intfile_has_acl (char const *path, struct stat const *pathstat){ /* FIXME: This implementation should work on recent-enough versions of HP-UX, Solaris, and Unixware, but it simply returns 0 with POSIX 1003.1e (draft 17 -- abandoned), AIX, GNU/Linux, Irix, and Tru64. Please see Samba's source/lib/sysacls.c file for fix-related ideas. */#if HAVE_ACL && defined GETACLCNT if (! S_ISLNK (pathstat->st_mode)) { int n = acl (path, GETACLCNT, 0, NULL); return n < 0 ? (errno == ENOSYS ? 0 : -1) : (MIN_ACL_ENTRIES < n); }#endif return 0;}
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