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 | * SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
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7 | *
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8 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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9 | */
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10 |
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11 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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12 | *
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13 | * Size reduction and improved error checking.
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14 | */
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15 |
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16 | #include <sys/types.h>
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17 | #include <sys/stat.h>
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18 | #include <dirent.h>
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19 | #include <getopt.h> /* struct option */
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20 | #include "libbb.h"
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21 | #include "libcoreutils/coreutils.h"
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22 |
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23 | #if ENABLE_FEATURE_MV_LONG_OPTIONS
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24 | static const char mv_longopts[] ALIGN1 =
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25 | "interactive\0" No_argument "i"
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26 | "force\0" No_argument "f"
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27 | ;
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28 | #endif
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29 |
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30 | #define OPT_FILEUTILS_FORCE 1
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31 | #define OPT_FILEUTILS_INTERACTIVE 2
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32 |
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33 | static const char fmt[] ALIGN1 =
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34 | "cannot overwrite %sdirectory with %sdirectory";
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35 |
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36 | int mv_main(int argc, char **argv);
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37 | int mv_main(int argc, char **argv)
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38 | {
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39 | struct stat dest_stat;
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40 | const char *last;
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41 | const char *dest;
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42 | unsigned long flags;
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43 | int dest_exists;
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44 | int status = 0;
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45 | int copy_flag = 0;
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46 |
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47 | #if ENABLE_FEATURE_MV_LONG_OPTIONS
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48 | applet_long_options = mv_longopts;
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49 | #endif
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50 | opt_complementary = "f-i:i-f";
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51 | flags = getopt32(argv, "fi");
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52 | if (optind + 2 > argc) {
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53 | bb_show_usage();
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54 | }
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55 |
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56 | last = argv[argc - 1];
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57 | argv += optind;
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58 |
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59 | if (optind + 2 == argc) {
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60 | dest_exists = cp_mv_stat(last, &dest_stat);
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61 | if (dest_exists < 0) {
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62 | return 1;
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63 | }
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64 |
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65 | if (!(dest_exists & 2)) {
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66 | dest = last;
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67 | goto DO_MOVE;
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68 | }
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69 | }
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70 |
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71 | do {
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72 | dest = concat_path_file(last, bb_get_last_path_component(*argv));
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73 | dest_exists = cp_mv_stat(dest, &dest_stat);
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74 | if (dest_exists < 0) {
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75 | goto RET_1;
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76 | }
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77 |
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78 | DO_MOVE:
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79 |
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80 | if (dest_exists && !(flags & OPT_FILEUTILS_FORCE) &&
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81 | ((access(dest, W_OK) < 0 && isatty(0)) ||
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82 | (flags & OPT_FILEUTILS_INTERACTIVE))) {
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83 | if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
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84 | goto RET_1; /* Ouch! fprintf failed! */
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85 | }
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86 | if (!bb_ask_confirmation()) {
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87 | goto RET_0;
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88 | }
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89 | }
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90 | if (rename(*argv, dest) < 0) {
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91 | struct stat source_stat;
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92 | int source_exists;
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93 |
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94 | if (errno != EXDEV ||
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95 | (source_exists = cp_mv_stat(*argv, &source_stat)) < 1) {
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96 | bb_perror_msg("cannot rename '%s'", *argv);
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97 | } else {
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98 | if (dest_exists) {
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99 | if (dest_exists == 3) {
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100 | if (source_exists != 3) {
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101 | bb_error_msg(fmt, "", "non-");
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102 | goto RET_1;
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103 | }
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104 | } else {
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105 | if (source_exists == 3) {
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106 | bb_error_msg(fmt, "non-", "");
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107 | goto RET_1;
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108 | }
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109 | }
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110 | if (unlink(dest) < 0) {
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111 | bb_perror_msg("cannot remove '%s'", dest);
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112 | goto RET_1;
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113 | }
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114 | }
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115 | copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS;
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116 | #if ENABLE_SELINUX
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117 | copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
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118 | #endif
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119 | if ((copy_file(*argv, dest, copy_flag) >= 0) &&
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120 | (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)) {
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121 | goto RET_0;
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122 | }
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123 | }
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124 | RET_1:
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125 | status = 1;
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126 | }
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127 | RET_0:
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128 | if (dest != last) {
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129 | free((void *) dest);
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130 | }
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131 | } while (*++argv != last);
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132 |
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133 | return status;
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134 | }
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