-#include "internal.h"
-#include <stdio.h>
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini cp implementation for busybox
+ *
+ * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/* BB_AUDIT SUSv3 defects - unsupported options -H, -L, and -P. */
+/* BB_AUDIT GNU defects - only extension options supported are -a and -d. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
+
+/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
+ *
+ * Size reduction.
+ */
+
+#include <sys/types.h>
#include <sys/stat.h>
-#include <sys/fcntl.h>
-#include <sys/param.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <utime.h>
#include <errno.h>
+#include <dirent.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "busybox.h"
+#include "libcoreutils/coreutils.h"
-const char cp_usage[] = "cp [-r] source-file destination-file\n"
-"\t\tcp [-r] source-file [source-file ...] destination-directory\n"
-"\n"
-"\tCopy the source files to the destination.\n"
-"\n"
-"\t-r:\tRecursively copy all files and directories\n"
-"\t\tunder the argument directory.";
+static const char cp_opts[] = "pdRfia"; /* WARNING!! ORDER IS IMPORTANT!! */
-extern int
-cp_fn(const struct FileInfo * i)
+extern int cp_main(int argc, char **argv)
{
- int sourceFd;
- int destinationFd;
- const char * destination = i->destination;
- struct stat destination_stat;
- int status;
- char buf[8192];
- char d[PATH_MAX];
+ struct stat source_stat;
+ struct stat dest_stat;
+ const char *last;
+ const char *dest;
+ int s_flags;
+ int d_flags;
+ int flags;
+ int status = 0;
+
+ /* Since these are enums, #if tests will not work. So use assert()s. */
+ assert(FILEUTILS_PRESERVE_STATUS == 1);
+ assert(FILEUTILS_DEREFERENCE == 2);
+ assert(FILEUTILS_RECUR == 4);
+ assert(FILEUTILS_FORCE == 8);
+ assert(FILEUTILS_INTERACTIVE == 16);
+
+ flags = bb_getopt_ulflags(argc, argv, cp_opts);
+
+ if (flags & 32) {
+ flags |= (FILEUTILS_PRESERVE_STATUS | FILEUTILS_RECUR | FILEUTILS_DEREFERENCE);
+ }
+
+ flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */
+
+ if (optind + 2 > argc) {
+ bb_show_usage();
+ }
- if ( (i->stat.st_mode & S_IFMT) == S_IFDIR ) {
- if ( mkdir(destination, i->stat.st_mode & ~S_IFMT)
- != 0 && errno != EEXIST ) {
- name_and_error(destination);
- return 1;
- }
- return 0;
- }
- if ( (sourceFd = open(i->source, O_RDONLY)) < 0 ) {
- name_and_error(i->source);
- return 1;
- }
- if ( stat(destination, &destination_stat) == 0 ) {
- if ( i->stat.st_ino == destination_stat.st_ino
- && i->stat.st_dev == destination_stat.st_dev ) {
- fprintf(stderr
- ,"copy of %s to %s would copy file to itself.\n"
- ,i->source
- ,destination);
- close(sourceFd);
- return 1;
- }
- }
- /*
- * If the destination is a directory, create a file within it.
- */
- if ( (destination_stat.st_mode & S_IFMT) == S_IFDIR ) {
- destination = join_paths(
- d
- ,i->destination
- ,&i->source[i->directoryLength]);
+ last = argv[argc - 1];
+ argv += optind;
- if ( stat(destination, &destination_stat) == 0 ) {
- if ( i->stat.st_ino == destination_stat.st_ino
- && i->stat.st_dev == destination_stat.st_dev ) {
- fprintf(stderr
- ,"copy of %s to %s would copy file to itself.\n"
- ,i->source
- ,destination);
- close(sourceFd);
- return 1;
- }
- }
- }
+ /* If there are only two arguments and... */
+ if (optind + 2 == argc) {
+ s_flags = cp_mv_stat2(*argv, &source_stat,
+ (flags & FILEUTILS_DEREFERENCE) ? stat : lstat);
+ if ((s_flags < 0) || ((d_flags = cp_mv_stat(last, &dest_stat)) < 0)) {
+ exit(EXIT_FAILURE);
+ }
+ /* ...if neither is a directory or... */
+ if ( !((s_flags | d_flags) & 2) ||
+ /* ...recursing, the 1st is a directory, and the 2nd doesn't exist... */
+ /* ((flags & FILEUTILS_RECUR) && (s_flags & 2) && !d_flags) */
+ /* Simplify the above since FILEUTILS_RECUR >> 1 == 2. */
+ ((((flags & FILEUTILS_RECUR) >> 1) & s_flags) && !d_flags)
+ ) {
+ /* ...do a simple copy. */
+ dest = last;
+ goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
+ }
+ }
- destinationFd = creat(destination, i->stat.st_mode & 07777);
+ do {
+ dest = concat_path_file(last, bb_get_last_path_component(*argv));
+ DO_COPY:
+ if (copy_file(*argv, dest, flags) < 0) {
+ status = 1;
+ }
+ if (*++argv == last) {
+ break;
+ }
+ free((void *) dest);
+ } while (1);
- while ( (status = read(sourceFd, buf, sizeof(buf))) > 0 ) {
- if ( write(destinationFd, buf, status) != status ) {
- name_and_error(destination);
- close(sourceFd);
- close(destinationFd);
- return 1;
- }
- }
- close(sourceFd);
- close(destinationFd);
- if ( status < 0 ) {
- name_and_error(i->source);
- return 1;
- }
- return 0;
+ exit(status);
}
projects / oweals / busybox.git / blobdiff