src/tests/kill-softer.c

   1 /*
   2  * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <sys/types.h>
  42 #include <sys/stat.h>
  43 #include <fcntl.h>
  44 #include <unistd.h>
  45 #include <dirent.h>
  46
  47 #include <err.h>
  48
  49 static FILE *verbose;
  50
  51 struct entry {
  52     char *name;
  53     int status;
  54 };
  55
  56 static void
  57   kill_one(struct entry *ents, int ind, int curents);
  58
  59 static void
  60   do_dir(const char *dirname);
  61
  62 static void
  63   kill_dir(const char *dirname);
  64
  65 static void
  66 kill_one(struct entry *ents, int ind, int curents)
  67 {
  68     int ret;
  69     int i;
  70
  71     ret = unlink(ents[ind].name);
  72     if (ret < 0) {
  73         if (errno == EISDIR || errno == EPERM)
  74             do_dir(ents[ind].name);
  75         else
  76             err(1, "unlink %s", ents[ind].name);
  77     }
  78     ents[ind].status = 0;
  79     for (i = 0; i <= ind; ++i) {
  80         struct stat sb;
  81
  82         ret = lstat(ents[i].name, &sb);
  83         if (ret == 0 || errno != ENOENT)
  84             err(1, "%s still exists?", ents[i].name);
  85     }
  86
  87     for (i = ind + 1; i < curents; ++i) {
  88         struct stat sb;
  89
  90         ret = lstat(ents[i].name, &sb);
  91         if (ret < 0)
  92             err(1, "stat %s", ents[i].name);
  93     }
  94 }
  95
  96 static void
  97 do_dir(const char *dirname)
  98 {
  99     int ret;
 100
 101     ret = chdir(dirname);
 102     if (ret < 0)
 103         err(1, "chdir %s", dirname);
 104     kill_dir(dirname);
 105     ret = chdir("..");
 106     if (ret < 0)
 107         err(1, "chdir ..");
 108     ret = rmdir(dirname);
 109     if (ret < 0)
 110         err(1, "rmdir %s", dirname);
 111 }
 112
 113 static void
 114 kill_dir(const char *dirname)
 115 {
 116     struct entry *ents;
 117     int maxents;
 118     int curents = 0;
 119     DIR *dir;
 120     struct dirent *dp;
 121     int i;
 122
 123     fprintf(verbose, "reading %s\n", dirname);
 124
 125     dir = opendir(".");
 126     if (dir == NULL)
 127         err(1, "opendir %s", dirname);
 128     maxents = 10;
 129     ents = malloc(sizeof(*ents) * maxents);
 130     if (ents == NULL)
 131         err(1, "malloc");
 132     while ((dp = readdir(dir)) != NULL) {
 133         if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
 134             continue;
 135
 136         if (curents >= maxents) {
 137             maxents *= 2;
 138             ents = realloc(ents, sizeof(*ents) * maxents);
 139             if (ents == NULL)
 140                 err(1, "realloc");
 141         }
 142         ents[curents].name = strdup(dp->d_name);
 143         ents[curents].status = 1;
 144         ++curents;
 145         fprintf(verbose, "  adding %s\n", dp->d_name);
 146     }
 147     closedir(dir);
 148     dir = opendir(".");
 149     if (dir == NULL)
 150         err(1, "opendir %s", dirname);
 151     i = 0;
 152     while ((dp = readdir(dir)) != NULL) {
 153         if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
 154             continue;
 155
 156         if (strcmp(ents[i].name, dp->d_name) != 0) {
 157             errx(1, "%s != %s", ents[i].name, dp->d_name);
 158         }
 159         fprintf(verbose, "  deleting %s\n", ents[i].name);
 160         kill_one(ents, i, curents);
 161         ++i;
 162     }
 163     if (i != curents)
 164         errx(1, "missing %d entries in %s", curents - i, dirname);
 165     closedir(dir);
 166     free(ents);
 167     fprintf(verbose, "end of %s\n", dirname);
 168 }
 169
 170 int
 171 main(int argc, char **argv)
 172 {
 173
 174     verbose = fdopen(4, "w");
 175     if (verbose == NULL) {
 176         verbose = fopen("/dev/null", "w");
 177         if (verbose == NULL)
 178             err(1, "fopen /dev/null");
 179     }
 180
 181     if (argc != 2)
 182         errx(1, "usage: %s directory", argv[0]);
 183     do_dir(argv[1]);
 184     return 0;
 185 }