usr/src/lib/libpkg/common/rrmdir.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 2009 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
  32 #include <limits.h>
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <unistd.h>
  36 #include <string.h>
  37 #include <strings.h>
  38 #include "pkglocale.h"
  39 #include "pkglib.h"
  40
  41 int
  42 rrmdir(char *a_path)
  43 {
  44         char    path[PATH_MAX+13];
  45         int     i;
  46         int     status;
  47
  48         /*
  49          * For some reason, a simple "rm -rf" will remove the contents
  50          * of the directory, but will fail to remove the directory itself
  51          * with "No such file or directory" when running the pkg commands
  52          * under a virtual root via the "chroot" command.  This has been
  53          * seen so far only with the `pkgremove' command, and when the
  54          * the directory is NFS mounted from a 4.x server.  This should
  55          * probably be revisited at a later time, but for now we'll just
  56          * remove the directory contents first, then the directory.
  57          */
  58
  59         /* do not allow removal of all root files via blank path */
  60
  61         if ((a_path == NULL) || (*a_path == '\0')) {
  62                 (void) fprintf(stderr,
  63                     pkg_gt("warning: rrmdir(path==NULL): nothing deleted\n"));
  64                 return (0);
  65         }
  66
  67         /*
  68          * first generate path with slash-star at the end and attempt to remove
  69          * all files first. If successful then remove with just the path only.
  70          */
  71
  72         (void) snprintf(path, sizeof (path), "%s/", a_path);
  73         i = e_ExecCmdList(&status, (char **)NULL, (char *)NULL,
  74                 "/bin/rm", "rm", "-rf", path, (char *)NULL);
  75
  76         if (access(a_path, F_OK) == 0) {
  77                 i = e_ExecCmdList(&status, (char **)NULL, (char *)NULL,
  78                         "/bin/rmdir", "rmdir", a_path, (char *)NULL);
  79         }
  80
  81         /* return 0 if last command successful, else return 1 */
  82         return ((i == 0 && status == 0) ? 0 : 1);
  83 }