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 <getopt.h>
  33 #include "libbb.h"
  34
  35 extern int remove_file(const char *path, int flags)
  36 {
  37         struct stat path_stat;
  38         int path_exists = 1;
  39
  40         if (stat(path, &path_stat) < 0) {
  41                 if (errno != ENOENT) {
  42                         perror_msg("unable to stat `%s'", path);
  43                         return -1;
  44                 }
  45
  46                 path_exists = 0;
  47         }
  48
  49         if (!path_exists) {
  50                 if (!(flags & FILEUTILS_FORCE)) {
  51                         perror_msg("cannot remove `%s'", path);
  52                         return -1;
  53                 }
  54                 return 0;
  55         }
  56
  57         if (S_ISDIR(path_stat.st_mode)) {
  58                 DIR *dp;
  59                 struct dirent *d;
  60                 int status = 0;
  61
  62                 if (!(flags & FILEUTILS_RECUR)) {
  63                         error_msg("%s: is a directory", path);
  64                         return -1;
  65                 }
  66
  67                 if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 &&
  68                                         isatty(0)) ||
  69                                 (flags & FILEUTILS_INTERACTIVE)) {
  70                         fprintf(stderr, "%s: descend into directory `%s'? ", applet_name,
  71                                         path);
  72                         if (!ask_confirmation())
  73                                 return 0;
  74                 }
  75
  76                 if ((dp = opendir(path)) == NULL) {
  77                         perror_msg("unable to open `%s'", path);
  78                         return -1;
  79                 }
  80
  81                 while ((d = readdir(dp)) != NULL) {
  82                         char *new_path;
  83
  84                         if (strcmp(d->d_name, ".") == 0 ||
  85                                         strcmp(d->d_name, "..") == 0)
  86                                 continue;
  87
  88                         new_path = concat_path_file(path, d->d_name);
  89                         if (remove_file(new_path, flags) < 0)
  90                                 status = -1;
  91                         free(new_path);
  92                 }
  93
  94                 if (closedir(dp) < 0) {
  95                         perror_msg("unable to close `%s'", path);
  96                         return -1;
  97                 }
  98
  99                 if (flags & FILEUTILS_INTERACTIVE) {
 100                         fprintf(stderr, "%s: remove directory `%s'? ", applet_name, path);
 101                         if (!ask_confirmation())
 102                                 return status;
 103                 }
 104
 105                 if (rmdir(path) < 0) {
 106                         perror_msg("unable to remove `%s'", path);
 107                         return -1;
 108                 }
 109
 110                 return status;
 111         } else {
 112                 if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 &&
 113                                         isatty(0)) ||
 114                                 (flags & FILEUTILS_INTERACTIVE)) {
 115                         fprintf(stderr, "%s: remove `%s'? ", applet_name, path);
 116                         if (!ask_confirmation())
 117                                 return 0;
 118                 }
 119
 120                 if (unlink(path) < 0) {
 121                         perror_msg("unable to remove `%s'", path);
 122                         return -1;
 123                 }
 124
 125                 return 0;
 126         }
 127 }