lib/libposix1e/acl_valid.c

   1 /*-
   2  * Copyright (c) 1999 Robert N. M. Watson
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  *$FreeBSD: src/lib/libposix1e/acl_valid.c,v 1.4 2000/01/28 20:07:00 rwatson Exp $
  27  *$DragonFly: src/lib/libposix1e/acl_valid.c,v 1.3 2005/08/04 17:27:09 drhodus Exp $
  28  */
  29 /*
  30  * acl_valid -- POSIX.1e ACL check routine
  31  */
  32
  33 #include <sys/types.h>
  34 #include <sys/acl.h>
  35 #include <sys/errno.h>
  36
  37 #include "acl_support.h"
  38
  39 /*
  40  * acl_valid: accepts an ACL, returns 0 on valid ACL, -1 for invalid,
  41  * and errno set to EINVAL.
  42  *
  43  * Implemented by calling the acl_check routine in acl_support, which
  44  * requires ordering.  We call acl_support's acl_sort to make this
  45  * true.  POSIX.1e allows acl_valid() to reorder the ACL as it sees fit.
  46  *
  47  * This call is deprecated, as it doesn't ask whether the ACL is valid
  48  * for a particular target.  However, this call is standardized, unlike
  49  * the other two forms.
  50  */
  51 int
  52 acl_valid(acl_t acl)
  53 {
  54         int     error;
  55
  56         acl_sort(acl);
  57         error = acl_check(acl);
  58         if (error) {
  59                 errno = error;
  60                 return (-1);
  61         } else {
  62                 return (0);
  63         }
  64 }
  65
  66
  67 int
  68 acl_valid_file_np(const char *pathp, acl_type_t type, acl_t acl)
  69 {
  70         int     error;
  71
  72         if (acl_posix1e(acl, type)) {
  73                 error = acl_sort(acl);
  74                 if (error) {
  75                         errno = error;
  76                         return (-1);
  77                 }
  78         }
  79
  80         return (__acl_aclcheck_file(pathp, type, acl));
  81 }
  82
  83
  84 int
  85 acl_valid_fd_np(int fd, acl_type_t type, acl_t acl)
  86 {
  87         int     error;
  88
  89         if (acl_posix1e(acl, type)) {
  90                 error = acl_sort(acl);
  91                 if (error) {
  92                         errno = error;
  93                         return (-1);
  94                 }
  95         }
  96
  97         return (__acl_aclcheck_fd(fd, type, acl));
  98 }