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authorGlenn L McGrath2001-06-22 09:22:06 +0000
committerGlenn L McGrath2001-06-22 09:22:06 +0000
commit8f5b63edea12501b998400789da5646140bb9911 (patch)
tree5a1924092009892cc80f0b0947ec1bae17ca3b1c /archival/cpio.c
parent52a97ca00cf5d290c9beb65ba7c217a5ed69ee42 (diff)
downloadbusybox-8f5b63edea12501b998400789da5646140bb9911.zip
busybox-8f5b63edea12501b998400789da5646140bb9911.tar.gz
cpio applet, and changes to associated code
Diffstat (limited to 'archival/cpio.c')
-rw-r--r--archival/cpio.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/archival/cpio.c b/archival/cpio.c
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+/* vi: set sw=4 ts=4: */
+/*
+ * Mini cpio implementation for busybox
+ *
+ * Copyright (C) 2001 by Glenn McGrath
+ *
+ * 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
+ *
+ * Limitations:
+ * Doesn't check CRC's
+ * Only supports new ASCII and CRC formats
+ * Doesnt support hard links
+ *
+ */
+#include <fcntl.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "busybox.h"
+
+extern int cpio_main(int argc, char **argv)
+{
+ FILE *src_stream = stdin;
+ char **extract_names = NULL;
+ int extract_function = 0;
+ int num_of_entries = 0;
+ int opt = 0;
+ mode_t oldmask = 0;
+
+ while ((opt = getopt(argc, argv, "idmuvtF:")) != -1) {
+ switch (opt) {
+ case 'i': // extract
+ extract_function |= extract_all_to_fs;
+ break;
+ case 'd': // create directories
+ extract_function |= extract_create_dirs;
+ oldmask = umask(077); /* Make create_path act like GNU cpio */
+ break;
+ case 'm': // preserve modification time
+ extract_function |= extract_preserve_date;
+ break;
+ case 'v': // verbosly list files
+ extract_function |= extract_verbose_list;
+ break;
+ case 'u': // unconditional
+ extract_function |= extract_unconditional;
+ break;
+ case 't': // list files
+ extract_function |= extract_list;
+ break;
+ case 'F':
+ src_stream = xfopen(optarg, "r");
+ break;
+ default:
+ show_usage();
+ }
+ }
+
+ if (extract_function & extract_all_to_fs && extract_function & extract_list) {
+ extract_function ^= extract_all_to_fs; /* If specify t, don't extract*/
+ }
+
+ if (extract_function & extract_all_to_fs && extract_function & extract_verbose_list) { /* The meaning of v changes on extract */
+ extract_function ^= extract_verbose_list;
+ extract_function |= extract_list;
+ }
+
+ extract_names = malloc(4);
+ while (optind < argc) {
+ num_of_entries++;
+ *extract_names = realloc(*extract_names, num_of_entries);
+ extract_names[num_of_entries - 1] = xstrdup(argv[optind]);
+ optind++;
+ }
+
+ unarchive(src_stream, &get_header_cpio, extract_function, "./", extract_names);
+ if (oldmask) umask(oldmask); /* Restore umask if we changed it */
+ return EXIT_SUCCESS;
+}
+