/*
* Mini mv implementation for busybox
*
- *
* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
+ * SELinux support by Yuichi Nakamura <ynakam@hitachisoft.jp>
*
- * 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
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
+ * Size reduction and improved error checking.
*/
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <dirent.h>
-#include <errno.h>
-#include <stdlib.h>
-
-#include "busybox.h"
-
-static int flags;
-
-static int manual_rename(const char *source, const char *dest)
+//config:config MV
+//config: bool "mv (10 kb)"
+//config: default y
+//config: help
+//config: mv is used to move or rename files or directories.
+
+//applet:IF_MV(APPLET_NOEXEC(mv, mv, BB_DIR_BIN, BB_SUID_DROP, mv))
+/* NOEXEC despite cases when it can be a "runner" (mv LARGE_DIR OTHER_FS) */
+
+//kbuild:lib-$(CONFIG_MV) += mv.o
+
+//usage:#define mv_trivial_usage
+//usage: "[-fin] SOURCE DEST\n"
+//usage: "or: mv [-fin] SOURCE... DIRECTORY"
+//usage:#define mv_full_usage "\n\n"
+//usage: "Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY\n"
+//usage: "\n -f Don't prompt before overwriting"
+//usage: "\n -i Interactive, prompt before overwrite"
+//usage: "\n -n Don't overwrite an existing file"
+//usage:
+//usage:#define mv_example_usage
+//usage: "$ mv /tmp/foo /bin/bar\n"
+
+#include "libbb.h"
+#include "libcoreutils/coreutils.h"
+
+int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int mv_main(int argc, char **argv)
{
- struct stat source_stat;
struct stat dest_stat;
- int source_exists = 1;
- int dest_exists = 1;
-
- if (stat(source, &source_stat) < 0) {
- if (errno != ENOENT) {
- perror_msg("unable to stat `%s'", source);
- return -1;
+ const char *last;
+ const char *dest;
+ unsigned flags;
+ int dest_exists;
+ int status = 0;
+ int copy_flag = 0;
+
+#define OPT_FORCE (1 << 0)
+#define OPT_INTERACTIVE (1 << 1)
+#define OPT_NOCLOBBER (1 << 2)
+#define OPT_VERBOSE ((1 << 3) * ENABLE_FEATURE_VERBOSE)
+ /* Need at least two arguments.
+ * If more than one of -f, -i, -n is specified , only the final one
+ * takes effect (it unsets previous options).
+ */
+ flags = getopt32long(argv, "^"
+ "finv"
+ "\0"
+ "-2:f-in:i-fn:n-fi",
+ "interactive\0" No_argument "i"
+ "force\0" No_argument "f"
+ "no-clobber\0" No_argument "n"
+ IF_FEATURE_VERBOSE(
+ "verbose\0" No_argument "v"
+ )
+ );
+ argc -= optind;
+ argv += optind;
+ last = argv[argc - 1];
+
+ if (argc == 2) {
+ dest_exists = cp_mv_stat(last, &dest_stat);
+ if (dest_exists < 0) {
+ return EXIT_FAILURE;
}
- source_exists = 0;
- }
- if (stat(dest, &dest_stat) < 0) {
- if (errno != ENOENT) {
- perror_msg("unable to stat `%s'", dest);
- return -1;
+ if (!(dest_exists & 2)) { /* last is not a directory */
+ dest = last;
+ goto DO_MOVE;
}
- dest_exists = 0;
}
- if (dest_exists) {
- if (S_ISDIR(dest_stat.st_mode) &&
- (!source_exists || !S_ISDIR(source_stat.st_mode))) {
- error_msg("cannot overwrite directory with non-directory");
- return -1;
+ do {
+ dest = concat_path_file(last, bb_get_last_path_component_strip(*argv));
+ dest_exists = cp_mv_stat(dest, &dest_stat);
+ if (dest_exists < 0) {
+ goto RET_1;
}
- if (!S_ISDIR(dest_stat.st_mode) && source_exists &&
- S_ISDIR(source_stat.st_mode)) {
- error_msg("cannot overwrite non-directory with directory");
- return -1;
- }
-
- if (unlink(dest) < 0) {
- perror_msg("cannot remove `%s'", dest);
- return -1;
- }
- }
-
- if (copy_file(source, dest, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS |
- FILEUTILS_PRESERVE_SYMLINKS) < 0)
- return -1;
-
- if (remove_file(source, FILEUTILS_RECUR | FILEUTILS_FORCE) < 0)
- return -1;
-
- return 0;
-}
-
-static int move_file(const char *source, const char *dest)
-{
- struct stat dest_stat;
- int dest_exists = 1;
-
- if (stat(dest, &dest_stat) < 0) {
- if (errno != ENOENT) {
- perror_msg("unable to stat `%s'", dest);
- return -1;
+ DO_MOVE:
+ if (dest_exists) {
+ if (flags & OPT_NOCLOBBER)
+ goto RET_0;
+ if (!(flags & OPT_FORCE)
+ && ((access(dest, W_OK) < 0 && isatty(0))
+ || (flags & OPT_INTERACTIVE))
+ ) {
+ if (fprintf(stderr, "mv: overwrite '%s'? ", dest) < 0) {
+ goto RET_1; /* Ouch! fprintf failed! */
+ }
+ if (!bb_ask_y_confirmation()) {
+ goto RET_0;
+ }
+ }
}
- dest_exists = 0;
- }
-
- if (dest_exists && !(flags & FILEUTILS_FORCE) &&
- ((access(dest, W_OK) < 0 && isatty(0)) ||
- (flags & FILEUTILS_INTERACTIVE))) {
- fprintf(stderr, "mv: overwrite `%s'? ", dest);
- if (!ask_confirmation())
- return 0;
- }
-
- if (rename(source, dest) < 0) {
- if (errno == EXDEV)
- return manual_rename(source, dest);
- perror_msg("unable to rename `%s'", source);
- return -1;
- }
-
- return 0;
-}
-
-extern int mv_main(int argc, char **argv)
-{
- int status = 0;
- int opt;
- int i;
-
- while ((opt = getopt(argc, argv, "fi")) != -1)
- switch (opt) {
- case 'f':
- flags &= ~FILEUTILS_INTERACTIVE;
- flags |= FILEUTILS_FORCE;
- break;
- case 'i':
- flags &= ~FILEUTILS_FORCE;
- flags |= FILEUTILS_INTERACTIVE;
- break;
- default:
- show_usage();
+ if (rename(*argv, dest) < 0) {
+ struct stat source_stat;
+ int source_exists;
+
+ if (errno != EXDEV
+ || (source_exists = cp_mv_stat2(*argv, &source_stat, lstat)) < 1
+ ) {
+ bb_perror_msg("can't rename '%s'", *argv);
+ } else {
+ static const char fmt[] ALIGN1 =
+ "can't overwrite %sdirectory with %sdirectory";
+
+ if (dest_exists) {
+ if (dest_exists == 3) {
+ if (source_exists != 3) {
+ bb_error_msg(fmt, "", "non-");
+ goto RET_1;
+ }
+ } else {
+ if (source_exists == 3) {
+ bb_error_msg(fmt, "non-", "");
+ goto RET_1;
+ }
+ }
+ if (unlink(dest) < 0) {
+ bb_perror_msg("can't remove '%s'", dest);
+ goto RET_1;
+ }
+ }
+ /* FILEUTILS_RECUR also prevents nasties like
+ * "read from device and write contents to dst"
+ * instead of "create same device node" */
+ copy_flag = FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS;
+#if ENABLE_SELINUX
+ copy_flag |= FILEUTILS_PRESERVE_SECURITY_CONTEXT;
+#endif
+ if ((copy_file(*argv, dest, copy_flag) >= 0)
+ && (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)
+ ) {
+ goto RET_0;
+ }
+ }
+ RET_1:
+ status = 1;
}
-
- if (optind + 2 > argc)
- show_usage();
-
- if (optind + 2 == argc) {
- struct stat dest_stat;
- int dest_exists = 1;
-
- if (stat(argv[optind + 1], &dest_stat) < 0) {
- if (errno != ENOENT)
- perror_msg_and_die("unable to stat `%s'", argv[optind + 1]);
- dest_exists = 0;
+ RET_0:
+ if (flags & OPT_VERBOSE) {
+ printf("'%s' -> '%s'\n", *argv, dest);
}
-
- if (!dest_exists || !S_ISDIR(dest_stat.st_mode)) {
- if (move_file(argv[optind], argv[optind + 1]) < 0)
- status = 1;
- return status;
+ if (dest != last) {
+ free((void *) dest);
}
- }
-
- for (i = optind; i < argc - 1; i++) {
- char *dest = concat_path_file(argv[argc - 1],
- get_last_path_component(argv[i]));
- if (move_file(argv[i], dest) < 0)
- status = 1;
- free(dest);
- }
+ } while (*++argv != last);
return status;
}
projects / oweals / busybox.git / blobdiff