usr/src/lib/libpkg/common/path_valid.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright (c) 2017 Peter Tribble.
  24  */
  25
  26 /*
  27  * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30
  31 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  32 /* All Rights Reserved */
  33
  34 #include <limits.h>
  35 #include <string.h>
  36 #include <sys/types.h>
  37
  38 /*
  39  * Name:                path_valid
  40  * Description: Checks a string for being a valid path
  41  *
  42  * Arguments:   path - path to validate
  43  *
  44  * Returns :    B_TRUE - success, B_FALSE otherwise.
  45  *              B_FALSE means path was null, too long (>PATH_MAX),
  46  *              or too short (<1)
  47  */
  48 boolean_t
  49 path_valid(char *path)
  50 {
  51         if (path == NULL) {
  52                 return (B_FALSE);
  53         } else if (strlen(path) > PATH_MAX) {
  54                 return (B_FALSE);
  55         } else if (strlen(path) >= 1) {
  56                 return (B_TRUE);
  57         } else {
  58                 /* path < 1 */
  59                 return (B_FALSE);
  60         }
  61 }