usr.sbin/installer/libaura/fspred.c

   1 /*
   2  * Copyright (c) 2004 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Chris Pressey <cpressey@catseye.mine.nu>.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35
  36 /*
  37  * fspred.c
  38  * Filesystem predicates.
  39  * $Id: fspred.c,v 1.3 2005/02/10 03:33:49 cpressey Exp $
  40  */
  41
  42 #include <sys/stat.h>
  43 #include <sys/param.h>
  44 #include <sys/ucred.h>
  45 #include <sys/mount.h>
  46
  47 #include <stdarg.h>
  48 #include <stdio.h>
  49 #include <stdlib.h>
  50 #include <string.h>
  51
  52 #include "fspred.h"
  53
  54 /** PREDICATES **/
  55
  56 int
  57 is_dir(const char *fmt, ...)
  58 {
  59         va_list args;
  60         char *filename;
  61         int result;
  62         struct stat sb;
  63
  64         va_start(args, fmt);
  65         vasprintf(&filename, fmt, args);
  66         va_end(args);
  67
  68         result = stat(filename, &sb);
  69         free(filename);
  70
  71         if (result == 0)
  72                 return(sb.st_mode & S_IFDIR);
  73         else
  74                 return(0);
  75 }
  76
  77 int
  78 is_file(const char *fmt, ...)
  79 {
  80         va_list args;
  81         char *filename;
  82         int result;
  83         struct stat sb;
  84
  85         va_start(args, fmt);
  86         vasprintf(&filename, fmt, args);
  87         va_end(args);
  88
  89         result = stat(filename, &sb);
  90         free(filename);
  91
  92         if (result == 0)
  93                 return(sb.st_mode & S_IFREG);
  94         else
  95                 return(0);
  96 }
  97
  98 int
  99 is_program(const char *fmt, ...)
 100 {
 101         va_list args;
 102         char *filename;
 103         int result;
 104         struct stat sb;
 105
 106         va_start(args, fmt);
 107         vasprintf(&filename, fmt, args);
 108         va_end(args);
 109
 110         result = stat(filename, &sb);
 111         free(filename);
 112
 113         if (result == 0)
 114                 return((sb.st_mode & S_IFREG) && (sb.st_mode & S_IXOTH));
 115         else
 116                 return(0);
 117 }
 118
 119 int
 120 is_device(const char *fmt, ...)
 121 {
 122         va_list args;
 123         char *filename;
 124         int result;
 125         struct stat sb;
 126
 127         va_start(args, fmt);
 128         vasprintf(&filename, fmt, args);
 129         va_end(args);
 130
 131         result = stat(filename, &sb);
 132         free(filename);
 133
 134         if (result == 0)
 135                 return((sb.st_mode & S_IFCHR) | (sb.st_mode & S_IFBLK));
 136         else
 137                 return(0);
 138 }
 139
 140 int
 141 is_named_pipe(const char *fmt, ...)
 142 {
 143         va_list args;
 144         char *filename;
 145         int result;
 146         struct stat sb;
 147
 148         va_start(args, fmt);
 149         vasprintf(&filename, fmt, args);
 150         va_end(args);
 151
 152         result = stat(filename, &sb);
 153
 154         free(filename);
 155
 156         if (result == 0)
 157                 return(sb.st_mode & S_IFIFO);
 158         else
 159                 return(0);
 160 }
 161
 162 int
 163 is_mountpoint_mounted(const char *mtpt)
 164 {
 165         struct statfs *mt_array, *mt_ptr;
 166         int count;
 167
 168         count = getmntinfo(&mt_array, MNT_WAIT);
 169         for (mt_ptr = mt_array; count > 0; mt_ptr++, count--) {
 170                 if (strcmp(mt_ptr->f_mntonname, mtpt) == 0)
 171                         return(1);
 172         }
 173         return(0);
 174 }
 175
 176 int
 177 is_device_mounted(const char *device)
 178 {
 179         struct statfs *mt_array, *mt_ptr;
 180         int count;
 181
 182         count = getmntinfo(&mt_array, MNT_WAIT);
 183         for (mt_ptr = mt_array; count > 0; mt_ptr++, count--) {
 184                 if (strcmp(mt_ptr->f_mntfromname, device) == 0)
 185                         return(1);
 186         }
 187         return(0);
 188 }
 189
 190 int
 191 is_any_slice_mounted(const char *diskdev)
 192 {
 193         struct statfs *mt_array, *mt_ptr;
 194         int count;
 195
 196         count = getmntinfo(&mt_array, MNT_WAIT);
 197         for (mt_ptr = mt_array; count > 0; mt_ptr++, count--) {
 198                 if (strstr(mt_ptr->f_mntfromname, diskdev) ==
 199                     mt_ptr->f_mntfromname)
 200                         return(1);
 201         }
 202         return(0);
 203 }