1 files changed, 93 insertions, 0 deletions

diff --git a/cpio.c b/cpio.c
new file mode 100644
index 000000000..ecd6f534a
--- /dev/null
+++ b/cpio.c
@@ -0,0 +1,93 @@
+/* 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;
+}
+