libbb/remove_file.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini remove_file implementation for busybox
   4  *
   5  * Copyright (C) 2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
   6  *
   7  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
   8  */
   9
  10 #include <stdio.h>
  11 #include <time.h>
  12 #include <utime.h>
  13 #include <dirent.h>
  14 #include <errno.h>
  15 #include <unistd.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18 #include <getopt.h>
  19 #include "libbb.h"
  20
  21 int remove_file(const char *path, int flags)
  22 {
  23         struct stat path_stat;
  24         int path_exists = 1;
  25
  26         if (lstat(path, &path_stat) < 0) {
  27                 if (errno != ENOENT) {
  28                         bb_perror_msg("unable to stat `%s'", path);
  29                         return -1;
  30                 }
  31
  32                 path_exists = 0;
  33         }
  34
  35         if (!path_exists) {
  36                 if (!(flags & FILEUTILS_FORCE)) {
  37                         bb_perror_msg("cannot remove `%s'", path);
  38                         return -1;
  39                 }
  40                 return 0;
  41         }
  42
  43         if (S_ISDIR(path_stat.st_mode)) {
  44                 DIR *dp;
  45                 struct dirent *d;
  46                 int status = 0;
  47
  48                 if (!(flags & FILEUTILS_RECUR)) {
  49                         bb_error_msg("%s: is a directory", path);
  50                         return -1;
  51                 }
  52
  53                 if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 &&
  54                                         isatty(0)) ||
  55                                 (flags & FILEUTILS_INTERACTIVE)) {
  56                         fprintf(stderr, "%s: descend into directory `%s'? ", applet_name,
  57                                         path);
  58                         if (!bb_ask_confirmation())
  59                                 return 0;
  60                 }
  61
  62                 if ((dp = opendir(path)) == NULL) {
  63                         return -1;
  64                 }
  65
  66                 while ((d = readdir(dp)) != NULL) {
  67                         char *new_path;
  68
  69                         new_path = concat_subpath_file(path, d->d_name);
  70                         if(new_path == NULL)
  71                                 continue;
  72                         if (remove_file(new_path, flags) < 0)
  73                                 status = -1;
  74                         free(new_path);
  75                 }
  76
  77                 if (closedir(dp) < 0) {
  78                         bb_perror_msg("unable to close `%s'", path);
  79                         return -1;
  80                 }
  81
  82                 if (flags & FILEUTILS_INTERACTIVE) {
  83                         fprintf(stderr, "%s: remove directory `%s'? ", applet_name, path);
  84                         if (!bb_ask_confirmation())
  85                                 return status;
  86                 }
  87
  88                 if (rmdir(path) < 0) {
  89                         bb_perror_msg("unable to remove `%s'", path);
  90                         return -1;
  91                 }
  92
  93                 return status;
  94         } else {
  95                 if ((!(flags & FILEUTILS_FORCE) && access(path, W_OK) < 0 &&
  96                                         !S_ISLNK(path_stat.st_mode) &&
  97                                         isatty(0)) ||
  98                                 (flags & FILEUTILS_INTERACTIVE)) {
  99                         fprintf(stderr, "%s: remove `%s'? ", applet_name, path);
 100                         if (!bb_ask_confirmation())
 101                                 return 0;
 102                 }
 103
 104                 if (unlink(path) < 0) {
 105                         bb_perror_msg("unable to remove `%s'", path);
 106                         return -1;
 107                 }
 108
 109                 return 0;
 110         }
 111 }