| 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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