+/* vi: set sw=4 ts=4: */
/*
* Mini cp implementation for busybox
*
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
- *
- * 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
+ * Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
+ * SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
*
+ * Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
*/
-#include "internal.h"
-#include <stdio.h>
-#include <time.h>
-#include <utime.h>
-#include <dirent.h>
-
-const char cp_usage[] = "cp [OPTION]... SOURCE DEST\n"
- " or: cp [OPTION]... SOURCE... DIRECTORY\n"
- "Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.\n"
- "\n"
- "\t-a\tsame as -dpR\n"
- "\t-d\tpreserve links\n"
- "\t-p\tpreserve file attributes if possable\n"
- "\t-R\tcopy directories recursively\n";
-
-
-static int recursiveFlag = FALSE;
-static int followLinks = FALSE;
-static int preserveFlag = FALSE;
-static const char *srcName;
-static const char *destName;
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/cp.html */
+/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
+ *
+ * Size reduction.
+ */
-static int fileAction(const char *fileName)
-{
- char newdestName[NAME_MAX];
- strcpy(newdestName, destName);
- strcat(newdestName, fileName+(strlen(srcName)));
- fprintf(stderr, "A: copying %s to %s\n", fileName, newdestName);
- return (copyFile(fileName, newdestName, preserveFlag, followLinks));
-}
+#include "busybox.h"
+#include "libcoreutils/coreutils.h"
-static int dirAction(const char *fileName)
+int cp_main(int argc, char **argv);
+int cp_main(int argc, char **argv)
{
- char newdestName[NAME_MAX];
- struct stat statBuf;
- struct utimbuf times;
-
- strcpy(newdestName, destName);
- strcat(newdestName, fileName+(strlen(srcName)));
- if (stat(newdestName, &statBuf)) {
- if (mkdir( newdestName, 0777777 ^ umask (0))) {
- perror(newdestName);
- return( FALSE);
- }
- }
- else if (!S_ISDIR (statBuf.st_mode)) {
- fprintf(stderr, "`%s' exists but is not a directory", newdestName);
- return( FALSE);
- }
- if (preserveFlag==TRUE) {
- /* Try to preserve premissions, but don't whine on failure */
- if (stat(newdestName, &statBuf)) {
- perror(newdestName);
- return( FALSE);
+ 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;
+ enum {
+ OPT_a = 1 << (sizeof(FILEUTILS_CP_OPTSTR)-1),
+ OPT_r = 1 << (sizeof(FILEUTILS_CP_OPTSTR)),
+ OPT_P = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+1),
+ OPT_H = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+2),
+ OPT_L = 1 << (sizeof(FILEUTILS_CP_OPTSTR)+3),
+ };
+
+ // Soft- and hardlinking don't mix
+ // -P and -d are the same (-P is POSIX, -d is GNU)
+ // -r and -R are the same
+ // -a = -pdR
+ opt_complementary = "?:l--s:s--l:Pd:rR:apdR";
+ flags = getopt32(argc, argv, FILEUTILS_CP_OPTSTR "arPHL");
+ /* Default behavior of cp is to dereference, so we don't have to do
+ * anything special when we are given -L.
+ * The behavior of -H is *almost* like -L, but not quite, so let's
+ * just ignore it too for fun.
+ if (flags & OPT_L) ...
+ if (flags & OPT_H) ... // deref command-line params only
+ */
+
+#if ENABLE_SELINUX
+ if (flags & FILEUTILS_PRESERVE_SECURITY_CONTEXT) {
+ selinux_or_die();
}
- chmod(newdestName, statBuf.st_mode);
- chown(newdestName, statBuf.st_uid, statBuf.st_gid);
- times.actime = statBuf.st_atime;
- times.modtime = statBuf.st_mtime;
- utime(newdestName, ×);
- }
- return TRUE;
-}
-
-extern int cp_main(int argc, char **argv)
-{
+#endif
- int dirFlag;
+ flags ^= FILEUTILS_DEREFERENCE; /* The sense of this flag was reversed. */
- if (argc < 3) {
- fprintf(stderr, "Usage: %s", cp_usage);
- exit (FALSE);
- }
- argc--;
- argv++;
-
- /* Parse any options */
- while (**argv == '-') {
- while (*++(*argv))
- switch (**argv) {
- case 'a':
- followLinks = TRUE;
- preserveFlag = TRUE;
- recursiveFlag = TRUE;
- break;
- case 'd':
- followLinks = TRUE;
- break;
- case 'p':
- preserveFlag = TRUE;
- break;
- case 'R':
- recursiveFlag = TRUE;
- break;
- default:
- fprintf(stderr, "Usage: %s\n", cp_usage);
- exit(FALSE);
- }
- argc--;
- argv++;
- }
-
-
- destName = argv[argc - 1];
+ if (optind + 2 > argc) {
+ bb_show_usage();
+ }
- dirFlag = isDirectory(destName);
+ last = argv[argc - 1];
+ argv += optind;
+
+ /* 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)
+ return EXIT_FAILURE;
+ d_flags = cp_mv_stat(last, &dest_stat);
+ if (d_flags < 0)
+ return 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)
+ ) {
+ /* ...do a simple copy. */
+ dest = xstrdup(last);
+ goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
+ }
+ }
- if ((argc > 3) && !dirFlag) {
- fprintf(stderr, "%s: not a directory\n", destName);
- exit (FALSE);
- }
+ do {
+ dest = concat_path_file(last, bb_get_last_path_component(*argv));
+ DO_COPY:
+ if (copy_file(*argv, dest, flags) < 0) {
+ status = 1;
+ }
+ free((void*)dest);
+ } while (*++argv != last);
- while (argc-- >= 2) {
- srcName = *(argv++);
- exit( recursiveAction(srcName, recursiveFlag, followLinks,
- fileAction, fileAction));
- }
- exit( TRUE);
+ return status;
}
projects / oweals / busybox.git / blobdiff