1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Mini cp 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 | * Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | /* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */
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11 | /* BB_AUDIT GNU defects - only extension options supported are -a and -d. */
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12 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
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13 |
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14 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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15 | *
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16 | * Size reduction.
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17 | */
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18 |
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19 | #include <sys/types.h>
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20 | #include <sys/stat.h>
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21 | #include <unistd.h>
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22 | #include <fcntl.h>
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23 | #include <utime.h>
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24 | #include <errno.h>
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25 | #include <dirent.h>
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26 | #include <stdlib.h>
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27 | #include <assert.h>
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28 | #include "busybox.h"
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29 | #include "libcoreutils/coreutils.h"
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30 |
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31 | int cp_main(int argc, char **argv)
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32 | {
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33 | struct stat source_stat;
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34 | struct stat dest_stat;
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35 | const char *last;
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36 | const char *dest;
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37 | int s_flags;
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38 | int d_flags;
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39 | int flags;
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40 | int status = 0;
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41 |
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42 | flags = bb_getopt_ulflags(argc, argv, "pdRfiarPHL");
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43 |
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44 | if (flags & 32) {
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45 | flags |= (FILEUTILS_PRESERVE_STATUS | FILEUTILS_RECUR | FILEUTILS_DEREFERENCE);
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46 | }
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47 | if (flags & 64) {
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48 | /* Make -r a synonym for -R,
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49 | * -r was marked as obsolete in SUSv3, but is included for compatibility
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50 | */
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51 | flags |= FILEUTILS_RECUR;
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52 | }
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53 | if (flags & 128) {
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54 | /* Make -P a synonym for -d,
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55 | * -d is the GNU option while -P is the POSIX 2003 option
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56 | */
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57 | flags |= FILEUTILS_DEREFERENCE;
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58 | }
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59 | /* Default behavior of cp is to dereference, so we don't have to do
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60 | * anything special when we are given -L.
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61 | * The behavior of -H is *almost* like -L, but not quite, so let's
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62 | * just ignore it too for fun.
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63 | if (flags & 256 || flags & 512) {
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64 | ;
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65 | }
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66 | */
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67 |
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68 | flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */
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69 |
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70 | if (optind + 2 > argc) {
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71 | bb_show_usage();
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72 | }
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73 |
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74 | last = argv[argc - 1];
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75 | argv += optind;
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76 |
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77 | /* If there are only two arguments and... */
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78 | if (optind + 2 == argc) {
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79 | s_flags = cp_mv_stat2(*argv, &source_stat,
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80 | (flags & FILEUTILS_DEREFERENCE) ? stat : lstat);
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81 | if ((s_flags < 0) || ((d_flags = cp_mv_stat(last, &dest_stat)) < 0)) {
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82 | exit(EXIT_FAILURE);
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83 | }
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84 | /* ...if neither is a directory or... */
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85 | if ( !((s_flags | d_flags) & 2) ||
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86 | /* ...recursing, the 1st is a directory, and the 2nd doesn't exist... */
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87 | /* ((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags) */
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88 | /* Simplify the above since FILEUTILS_RECUR >> 1 == 2. */
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89 | ((((flags & FILEUTILS_RECUR) >> 1) & s_flags) && !d_flags)
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90 | ) {
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91 | /* ...do a simple copy. */
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92 | dest = last;
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93 | goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
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94 | }
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95 | }
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96 |
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97 | do {
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98 | dest = concat_path_file(last, bb_get_last_path_component(*argv));
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99 | DO_COPY:
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100 | if (copy_file(*argv, dest, flags) < 0) {
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101 | status = 1;
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102 | }
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103 | if (*++argv == last) {
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104 | break;
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105 | }
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106 | free((void *) dest);
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107 | } while (1);
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108 |
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109 | exit(status);
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110 | }
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