[821] | 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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