libbb/remove_file.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini remove_file implementation for busybox
   4  *
   5  *
   6  * Copyright (C) 2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
   7  *
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  *
  23  */
  24
  25 #include <stdio.h>
  26 #include <time.h>
  27 #include <utime.h>
  28 #include <dirent.h>
  29 #include <errno.h>
  30 #include <unistd.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <getopt.h>
  34 #include "libbb.h"
  35
  36 extern int remove_file(const char *path, int flags)
  37 {
  38         struct stat path_stat;
  39         int path_exists = 1;
  40
  41         if (lstat(path, &path_stat) < 0) {
  42                 if (errno != ENOENT) {
  43                         perror_msg("unable to stat `%s'", path);
  44                         return -1;
  45                 }
  46
  47                 path_exists = 0;
  48         }
  49
  50         if (!path_exists) {
  51                 if (!(flags & FILEUTILS_FORCE)) {
  52                         perror_msg("cannot remove `%s'", path);
  53                         return -1;
  54                 }
  55                 return 0;
  56         }
  57
  58         if (S_ISDIR(path_stat.st_mode)) {
  59                 DIR *dp;
  60                 struct dirent *d;
  61                 int status = 0;
  62
  63                 if (!(flags & FILEUTILS_RECUR)) {
  64                         error_msg("%s: is a directory", path);
  65                         return -1;
  66                 }
  67
  68                 if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 &&
  69                                         isatty(0)) ||
  70                                 (flags & FILEUTILS_INTERACTIVE)) {
  71                         fprintf(stderr, "%s: descend into directory `%s'? ", applet_name,
  72                                         path);
  73                         if (!ask_confirmation())
  74                                 return 0;
  75                 }
  76
  77                 if ((dp = opendir(path)) == NULL) {
  78                         perror_msg("unable to open `%s'", path);
  79                         return -1;
  80                 }
  81
  82                 while ((d = readdir(dp)) != NULL) {
  83                         char *new_path;
  84
  85                         if (strcmp(d->d_name, ".") == 0 ||
  86                                         strcmp(d->d_name, "..") == 0)
  87                                 continue;
  88
  89                         new_path = concat_path_file(path, d->d_name);
  90                         if (remove_file(new_path, flags) < 0)
  91                                 status = -1;
  92                         free(new_path);
  93                 }
  94
  95                 if (closedir(dp) < 0) {
  96                         perror_msg("unable to close `%s'", path);
  97                         return -1;
  98                 }
  99
 100                 if (flags & FILEUTILS_INTERACTIVE) {
 101                         fprintf(stderr, "%s: remove directory `%s'? ", applet_name, path);
 102                         if (!ask_confirmation())
 103                                 return status;
 104                 }
 105
 106                 if (rmdir(path) < 0) {
 107                         perror_msg("unable to remove `%s'", path);
 108                         return -1;
 109                 }
 110
 111                 return status;
 112         } else {
 113                 if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 &&
 114                                         !S_ISLNK(path_stat.st_mode) &&
 115                                         isatty(0)) ||
 116                                 (flags & FILEUTILS_INTERACTIVE)) {
 117                         fprintf(stderr, "%s: remove `%s'? ", applet_name, path);
 118                         if (!ask_confirmation())
 119                                 return 0;
 120                 }
 121
 122                 if (unlink(path) < 0) {
 123                         perror_msg("unable to remove `%s'", path);
 124                         return -1;
 125                 }
 126
 127                 return 0;
 128         }
 129 }