usr/src/cmd/bnu/gwd.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 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 #include "uucp.h"
  34
  35 /*
  36  *      gwd - get working directory
  37  *      Uid and Euid are global
  38  *      return
  39  *              0 - ok
  40  *              FAIL - failed
  41  */
  42
  43 int
  44 gwd(wkdir)
  45 char *wkdir;
  46 {
  47         FILE *fp;
  48         char cmd[BUFSIZ];
  49
  50         *wkdir = '\0';
  51         (void) sprintf(cmd, "%s pwd 2>&-", PATH);
  52
  53 #ifndef V7
  54         (void) setuid(Uid);
  55         fp = popen(cmd, "r");
  56         (void) setuid(Euid);
  57 #else
  58         fp = popen(cmd, "r");
  59 #endif
  60
  61         if (fp == NULL)
  62                 return(FAIL);
  63
  64         if (fgets(wkdir, MAXFULLNAME, fp) == NULL) {
  65                 (void) pclose(fp);
  66                 return(FAIL);
  67         }
  68         if (wkdir[strlen(wkdir)-1] == '\n')
  69                 wkdir[strlen(wkdir)-1] = '\0';
  70         (void) pclose(fp);
  71         return(0);
  72 }
  73
  74
  75 /*
  76  * uidstat(file, &statbuf)
  77  * This is a stat call with the uid set from Euid to Uid.
  78  * Used from uucp.c and uux.c to permit file copies
  79  * from directories that may not be searchable by other.
  80  * return:
  81  *      same as stat()
  82  */
  83
  84 int
  85 uidstat(file, buf)
  86 char *file;
  87 struct stat *buf;
  88 {
  89 #ifndef V7
  90         int ret;
  91
  92         (void) setuid(Uid);
  93         ret = stat(file, buf);
  94         (void) setuid(Euid);
  95         return(ret);
  96 #else /* V7 */
  97         int     ret;
  98
  99         if (vfork() == 0) {
 100                 (void) setuid(Uid);
 101                 _exit(stat(file, buf));
 102         }
 103         wait(&ret);
 104         return(ret);
 105 #endif /* V7 */
 106 }