usr/src/tools/cscope-fast/vpopen.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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1988 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 /*
  27  * Copyright (c) 1999 by Sun Microsystems, Inc.
  28  * All rights reserved.
  29  */
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 /* vpopen - view path version of the open system call */
  34
  35 #include <sys/types.h>
  36 #include <fcntl.h>
  37 #include <sys/stat.h>
  38 #include <stdio.h>
  39 #include "vp.h"
  40
  41 #define READ    0
  42
  43 int
  44 vpopen(char *path, int oflag)
  45 {
  46         char    buf[MAXPATH + 1];
  47         int     returncode;
  48         int     i;
  49
  50         if ((returncode = open(path, oflag, 0666)) == -1 && *path != '/' &&
  51             oflag == READ) {
  52                 vpinit((char *)0);
  53                 for (i = 1; i < vpndirs; i++) {
  54                         (void) sprintf(buf, "%s/%s", vpdirs[i], path);
  55                         if ((returncode = open(buf, oflag, 0666)) != -1) {
  56                                 break;
  57                         }
  58                 }
  59         }
  60         return (returncode);
  61 }