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-rw-r--r--coreutils/cp.c130
1 files changed, 64 insertions, 66 deletions
diff --git a/coreutils/cp.c b/coreutils/cp.c
index 8f8fe5e..c5dd31e 100644
--- a/coreutils/cp.c
+++ b/coreutils/cp.c
@@ -2,7 +2,6 @@
/*
* 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
@@ -21,6 +20,15 @@
*
*/
+/* 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 <unistd.h>
@@ -29,86 +37,76 @@
#include <errno.h>
#include <dirent.h>
#include <stdlib.h>
-
+#include <assert.h>
#include "busybox.h"
+#include "libcoreutils/coreutils.h"
+
+static const char cp_opts[] = "pdRfia"; /* WARNING!! ORDER IS IMPORTANT!! */
extern int cp_main(int argc, char **argv)
{
+ 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;
- int opt;
- int flags = FILEUTILS_DEREFERENCE;
- int i;
- while ((opt = getopt(argc, argv, "adfipR")) != -1)
- switch (opt) {
- case 'a':
- flags |= FILEUTILS_PRESERVE_STATUS | FILEUTILS_RECUR;
- /* fallthrough */
- case 'd':
- flags &= ~FILEUTILS_DEREFERENCE;
- break;
- case 'f':
- flags |= FILEUTILS_FORCE;
- break;
- case 'i':
- flags |= FILEUTILS_INTERACTIVE;
- break;
- case 'p':
- flags |= FILEUTILS_PRESERVE_STATUS;
- break;
- case 'R':
- flags |= FILEUTILS_RECUR;
- break;
- default:
- show_usage();
- }
-
- if (optind + 2 > argc)
- show_usage();
+ /* 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);
- /* If there are only two arguments and... */
- if (optind + 2 == argc) {
- struct stat source_stat;
- struct stat dest_stat;
- int source_exists = 1;
- int dest_exists = 1;
+ flags = bb_getopt_ulflags(argc, argv, cp_opts);
- if ((!(flags & FILEUTILS_DEREFERENCE) &&
- lstat(argv[optind], &source_stat) < 0) ||
- ((flags & FILEUTILS_DEREFERENCE) &&
- stat(argv[optind], &source_stat))) {
- if (errno != ENOENT)
- perror_msg_and_die("unable to stat `%s'", argv[optind]);
- source_exists = 0;
- }
+ 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();
+ }
+
+ last = argv[argc - 1];
+ argv += optind;
- 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 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 (((!source_exists || !S_ISDIR(source_stat.st_mode)) &&
- (!dest_exists || !S_ISDIR(dest_stat.st_mode))) ||
- /* ...recursing, the first is a directory, and the
- * second doesn't exist, then... */
- ((flags & FILEUTILS_RECUR) && S_ISDIR(source_stat.st_mode) &&
- !dest_exists)) {
+ 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. */
- if (copy_file(argv[optind], argv[optind + 1], flags) < 0)
- status = 1;
- return status;
+ dest = last;
+ goto DO_COPY; /* Note: optind+2==argc implies argv[1]==last below. */
}
}
- for (i = optind; i < argc - 1; i++) {
- char *dest = concat_path_file(argv[argc - 1],
- get_last_path_component(argv[i]));
- if (copy_file(argv[i], dest, flags) < 0)
+ do {
+ dest = concat_path_file(last, bb_get_last_path_component(*argv));
+ DO_COPY:
+ if (copy_file(*argv, dest, flags) < 0) {
status = 1;
- free(dest);
- }
+ }
+ if (*++argv == last) {
+ break;
+ }
+ free((void *) dest);
+ } while (1);
- return status;
+ exit(status);
}