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126 lines
3.5 KiB
C
126 lines
3.5 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini cp implementation for busybox
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*
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* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */
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/* BB_AUDIT GNU defects - only extension options supported are -a and -d. */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
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/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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*
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* Size reduction.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <utime.h>
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#include <errno.h>
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#include <dirent.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "busybox.h"
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#include "libcoreutils/coreutils.h"
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/* WARNING!! ORDER IS IMPORTANT!! */
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static const char cp_opts[] = "pdRfiarP";
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extern int cp_main(int argc, char **argv)
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{
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struct stat source_stat;
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struct stat dest_stat;
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const char *last;
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const char *dest;
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int s_flags;
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int d_flags;
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int flags;
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int status = 0;
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/* Since these are enums, #if tests will not work. So use assert()s. */
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assert(FILEUTILS_PRESERVE_STATUS == 1);
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assert(FILEUTILS_DEREFERENCE == 2);
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assert(FILEUTILS_RECUR == 4);
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assert(FILEUTILS_FORCE == 8);
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assert(FILEUTILS_INTERACTIVE == 16);
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flags = bb_getopt_ulflags(argc, argv, cp_opts);
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if (flags & 32) {
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flags |= (FILEUTILS_PRESERVE_STATUS | FILEUTILS_RECUR | FILEUTILS_DEREFERENCE);
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}
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if (flags & 64) {
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/* Make -r a synonym for -R,
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* -r was marked as obsolete in SUSv3, but is included for compatability
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*/
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flags |= FILEUTILS_RECUR;
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}
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if (flags & 128) {
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/* Make -P a synonym for -d,
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* -d is the GNU option while -P is the POSIX 2003 option
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*/
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flags |= FILEUTILS_DEREFERENCE;
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}
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flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */
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if (optind + 2 > argc) {
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bb_show_usage();
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}
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last = argv[argc - 1];
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argv += optind;
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/* If there are only two arguments and... */
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if (optind + 2 == argc) {
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s_flags = cp_mv_stat2(*argv, &source_stat,
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(flags & FILEUTILS_DEREFERENCE) ? stat : lstat);
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if ((s_flags < 0) || ((d_flags = cp_mv_stat(last, &dest_stat)) < 0)) {
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exit(EXIT_FAILURE);
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}
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/* ...if neither is a directory or... */
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if ( !((s_flags | d_flags) & 2) ||
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/* ...recursing, the 1st is a directory, and the 2nd doesn't exist... */
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/* ((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags) */
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/* Simplify the above since FILEUTILS_RECUR >> 1 == 2. */
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((((flags & FILEUTILS_RECUR) >> 1) & s_flags) && !d_flags)
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) {
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/* ...do a simple copy. */
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dest = last;
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goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
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}
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}
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do {
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dest = concat_path_file(last, bb_get_last_path_component(*argv));
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DO_COPY:
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if (copy_file(*argv, dest, flags) < 0) {
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status = 1;
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}
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if (*++argv == last) {
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break;
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}
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free((void *) dest);
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} while (1);
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exit(status);
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}
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