1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini mv implementation for busybox
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4 | *
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5 | * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
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6 | *
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7 | * This program is free software; you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation; either version 2 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * This program is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 | * General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with this program; if not, write to the Free Software
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19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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20 | *
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21 | */
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22 |
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23 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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24 | *
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25 | * Size reduction and improved error checking.
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26 | */
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27 |
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28 | #include <sys/types.h>
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29 | #include <sys/stat.h>
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30 | #include <unistd.h>
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31 | #include <dirent.h>
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32 | #include <errno.h>
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33 | #include <stdlib.h>
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34 | #include <getopt.h> /* struct option */
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35 | #include "busybox.h"
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36 | #include "libcoreutils/coreutils.h"
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37 |
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38 | #if ENABLE_FEATURE_MV_LONG_OPTIONS
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39 | static const struct option mv_long_options[] = {
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40 | { "interactive", 0, NULL, 'i' },
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41 | { "force", 0, NULL, 'f' },
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42 | { 0, 0, 0, 0 }
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43 | };
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44 | #endif
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45 |
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46 | #define OPT_FILEUTILS_FORCE 1
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47 | #define OPT_FILEUTILS_INTERACTIVE 2
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48 |
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49 | static const char fmt[] = "cannot overwrite %sdirectory with %sdirectory";
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50 |
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51 | int mv_main(int argc, char **argv)
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52 | {
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53 | struct stat dest_stat;
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54 | const char *last;
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55 | const char *dest;
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56 | unsigned long flags;
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57 | int dest_exists;
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58 | int status = 0;
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59 |
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60 | #if ENABLE_FEATURE_MV_LONG_OPTIONS
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61 | bb_applet_long_options = mv_long_options;
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62 | #endif
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63 | bb_opt_complementally = "f-i:i-f";
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64 | flags = bb_getopt_ulflags(argc, argv, "fi");
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65 | if (optind + 2 > argc) {
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66 | bb_show_usage();
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67 | }
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68 |
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69 | last = argv[argc - 1];
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70 | argv += optind;
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71 |
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72 | if (optind + 2 == argc) {
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73 | if ((dest_exists = cp_mv_stat(last, &dest_stat)) < 0) {
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74 | return 1;
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75 | }
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76 |
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77 | if (!(dest_exists & 2)) {
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78 | dest = last;
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79 | goto DO_MOVE;
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80 | }
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81 | }
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82 |
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83 | do {
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84 | dest = concat_path_file(last, bb_get_last_path_component(*argv));
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85 |
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86 | if ((dest_exists = cp_mv_stat(dest, &dest_stat)) < 0) {
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87 | goto RET_1;
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88 | }
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89 |
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90 | DO_MOVE:
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91 |
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92 | if (dest_exists && !(flags & OPT_FILEUTILS_FORCE) &&
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93 | ((access(dest, W_OK) < 0 && isatty(0)) ||
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94 | (flags & OPT_FILEUTILS_INTERACTIVE))) {
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95 | if (fprintf(stderr, "mv: overwrite `%s'? ", dest) < 0) {
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96 | goto RET_1; /* Ouch! fprintf failed! */
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97 | }
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98 | if (!bb_ask_confirmation()) {
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99 | goto RET_0;
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100 | }
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101 | }
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102 | if (rename(*argv, dest) < 0) {
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103 | struct stat source_stat;
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104 | int source_exists;
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105 |
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106 | if (errno != EXDEV ||
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107 | (source_exists = cp_mv_stat(*argv, &source_stat)) < 1) {
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108 | bb_perror_msg("unable to rename `%s'", *argv);
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109 | } else {
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110 | if (dest_exists) {
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111 | if (dest_exists == 3) {
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112 | if (source_exists != 3) {
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113 | bb_error_msg(fmt, "", "non-");
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114 | goto RET_1;
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115 | }
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116 | } else {
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117 | if (source_exists == 3) {
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118 | bb_error_msg(fmt, "non-", "");
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119 | goto RET_1;
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120 | }
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121 | }
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122 | if (unlink(dest) < 0) {
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123 | bb_perror_msg("cannot remove `%s'", dest);
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124 | goto RET_1;
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125 | }
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126 | }
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127 | if ((copy_file(*argv, dest,
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128 | FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS) >= 0) &&
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129 | (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)) {
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130 | goto RET_0;
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131 | }
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132 | }
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133 | RET_1:
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134 | status = 1;
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135 | }
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136 | RET_0:
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137 | if (dest != last) {
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138 | free((void *) dest);
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139 | }
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140 | } while (*++argv != last);
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141 |
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142 | return (status);
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143 | }
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