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-rw-r--r--coreutils/mv.c203
1 files changed, 88 insertions, 115 deletions
diff --git a/coreutils/mv.c b/coreutils/mv.c
index 1c4a347..ae0ee92 100644
--- a/coreutils/mv.c
+++ b/coreutils/mv.c
@@ -2,7 +2,6 @@
/*
* Mini mv 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
@@ -21,148 +20,122 @@
*
*/
+/* 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"
+#include "libcoreutils/coreutils.h"
-static int flags;
+static const char *fmt = "cannot overwrite %sdirectory with %sdirectory";
-static int manual_rename(const char *source, const char *dest)
+extern int mv_main(int argc, char **argv)
{
struct stat source_stat;
struct stat dest_stat;
- int source_exists = 1;
- int dest_exists = 1;
+ const char *last;
+ const char *dest;
+ int dest_exists;
+ int source_exists;
+ int opt;
+ int flags = 0;
+ int status = 0;
- if (stat(source, &source_stat) < 0) {
- if (errno != ENOENT) {
- perror_msg("unable to stat `%s'", source);
- return -1;
+ while ((opt = getopt(argc, argv, "fi")) > 0) {
+ flags &= ~(FILEUTILS_INTERACTIVE | FILEUTILS_FORCE);
+ if (opt == 'i') {
+ flags |= FILEUTILS_INTERACTIVE;
+ } else if (opt == 'f') {
+ flags |= FILEUTILS_FORCE;
+ } else {
+ bb_show_usage();
}
- source_exists = 0;
}
- if (stat(dest, &dest_stat) < 0) {
- if (errno != ENOENT) {
- perror_msg("unable to stat `%s'", dest);
- return -1;
- }
- dest_exists = 0;
- }
+ if (optind + 2 > argc)
+ bb_show_usage();
- 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;
- }
+ last = argv[argc - 1];
+ argv += optind;
- 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 (optind + 2 == argc) {
+ if ((dest_exists = cp_mv_stat(last, &dest_stat)) < 0) {
+ return 1;
}
- if (unlink(dest) < 0) {
- perror_msg("cannot remove `%s'", dest);
- return -1;
+ if (!(dest_exists & 2)) {
+ dest = last;
+ goto DO_MOVE;
}
}
+
+ do {
+ dest = concat_path_file(last,
+ bb_get_last_path_component(*argv));
- if (copy_file(source, dest,
- FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS) < 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;
+ if ((dest_exists = cp_mv_stat(dest, &dest_stat)) < 0) {
+ goto RET_1;
}
- dest_exists = 0;
- }
- if (dest_exists && !(flags & FILEUTILS_FORCE) &&
+ DO_MOVE:
+
+ 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 (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;
+ if (fprintf(stderr, "mv: overwrite `%s'? ", dest) < 0) {
+ goto RET_1; /* Ouch! fprintf failed! */
+ }
+ if (!bb_ask_confirmation())
+ goto RET_0;
+ }
+
+ if (rename(*argv, dest) < 0) {
+ if (errno != EXDEV) {
+ bb_perror_msg("unable to rename `%s'", *argv);
+ } else if ((source_exists = cp_mv_stat(*argv, &source_stat)) >= 0) {
+ if (dest_exists) {
+ if (dest_exists & 2) {
+ if (!(source_exists & 2)) {
+ bb_error_msg(fmt, "", "non-");
+ goto RET_1;
+ }
+ } else {
+ if (source_exists & 2) {
+ bb_error_msg(fmt, "non-", "");
+ goto RET_1;
+ }
+ }
+ if (unlink(dest) < 0) {
+ bb_perror_msg("cannot remove `%s'", dest);
+ goto RET_1;
+ }
+ }
+
+ if ((copy_file(*argv, dest,
+ FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS) >= 0)
+ && (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)
+ ) {
+ goto RET_0;
+ }
+
+ }
+ RET_1:
+ status = 1;
}
- if (!dest_exists || !S_ISDIR(dest_stat.st_mode)) {
- if (move_file(argv[optind], argv[optind + 1]) < 0)
- status = 1;
- return status;
+ RET_0:
+ 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);
- }
-
- return status;
+
+ } while (*++argv != last);
+
+ exit(status);
}