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 | * SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
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7 | *
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8 | * Licensed under GPL v2 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 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
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12 |
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13 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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14 | *
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15 | * Size reduction.
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16 | */
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17 |
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18 | #include "libbb.h"
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19 | #include "libcoreutils/coreutils.h"
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20 |
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21 | /* This is a NOEXEC applet. Be very careful! */
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22 |
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23 |
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24 | int cp_main(int argc, char **argv);
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25 | int cp_main(int argc, char **argv)
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26 | {
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27 | struct stat source_stat;
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28 | struct stat dest_stat;
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29 | const char *last;
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30 | const char *dest;
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31 | int s_flags;
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32 | int d_flags;
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33 | int flags;
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34 | int status = 0;
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35 | enum {
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36 | OPT_a = 1 << (sizeof(FILEUTILS_CP_OPTSTR)-1),
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37 | OPT_r = 1 << (sizeof(FILEUTILS_CP_OPTSTR)),
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38 | OPT_P = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+1),
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39 | OPT_H = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+2),
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40 | OPT_L = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+3),
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41 | };
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42 |
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43 | // Soft- and hardlinking don't mix
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44 | // -P and -d are the same (-P is POSIX, -d is GNU)
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45 | // -r and -R are the same
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46 | // -a = -pdR
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47 | opt_complementary = "l--s:s--l:Pd:rR:apdR";
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48 | flags = getopt32(argv, FILEUTILS_CP_OPTSTR "arPHL");
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49 | /* Default behavior of cp is to dereference, so we don't have to do
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50 | * anything special when we are given -L.
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51 | * The behavior of -H is *almost* like -L, but not quite, so let's
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52 | * just ignore it too for fun.
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53 | if (flags & OPT_L) ...
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54 | if (flags & OPT_H) ... // deref command-line params only
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55 | */
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56 |
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57 | #if ENABLE_SELINUX
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58 | if (flags & FILEUTILS_PRESERVE_SECURITY_CONTEXT) {
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59 | selinux_or_die();
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60 | }
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61 | #endif
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62 |
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63 | flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */
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64 |
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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 there are only two arguments and... */
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73 | if (optind + 2 == argc) {
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74 | s_flags = cp_mv_stat2(*argv, &source_stat,
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75 | (flags & FILEUTILS_DEREFERENCE) ? stat : lstat);
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76 | if (s_flags < 0)
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77 | return EXIT_FAILURE;
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78 | d_flags = cp_mv_stat(last, &dest_stat);
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79 | if (d_flags < 0)
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80 | return EXIT_FAILURE;
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81 |
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82 | /* ...if neither is a directory or... */
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83 | if ( !((s_flags | d_flags) & 2) ||
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84 | /* ...recursing, the 1st is a directory, and the 2nd doesn't exist... */
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85 | ((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags)
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86 | ) {
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87 | /* ...do a simple copy. */
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88 | dest = xstrdup(last);
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89 | goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
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90 | }
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91 | }
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92 |
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93 | do {
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94 | dest = concat_path_file(last, bb_get_last_path_component(*argv));
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95 | DO_COPY:
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96 | if (copy_file(*argv, dest, flags) < 0) {
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97 | status = 1;
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98 | }
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99 | free((void*)dest);
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100 | } while (*++argv != last);
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101 |
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102 | return status;
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103 | }
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