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    Contents of /trunk/mkinitrd-magellan/busybox/archival/cpio.c

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    Revision 532 - (show annotations) (download)
    Sat Sep 1 22:45:15 2007 UTC (16 years, 9 months ago) by niro
    File MIME type: text/plain
    File size: 2299 byte(s) 
    -import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
    1 /* vi: set sw=4 ts=4: */
    2 /*
    3 * Mini cpio implementation for busybox
    4 *
    5 * Copyright (C) 2001 by Glenn McGrath
    6 *
    7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
    8 *
    9 * Limitations:
    10 * Doesn't check CRC's
    11 * Only supports new ASCII and CRC formats
    12 *
    13 */
    14 #include <fcntl.h>
    15 #include <stdlib.h>
    16 #include <string.h>
    17 #include <unistd.h>
    18 #include "unarchive.h"
    19 #include "busybox.h"
    20
    21 #define CPIO_OPT_EXTRACT 0x01
    22 #define CPIO_OPT_TEST 0x02
    23 #define CPIO_OPT_UNCONDITIONAL 0x04
    24 #define CPIO_OPT_VERBOSE 0x08
    25 #define CPIO_OPT_FILE 0x10
    26 #define CPIO_OPT_CREATE_LEADING_DIR 0x20
    27 #define CPIO_OPT_PRESERVE_MTIME 0x40
    28
    29 int cpio_main(int argc, char **argv)
    30 {
    31 archive_handle_t *archive_handle;
    32 char *cpio_filename = NULL;
    33 unsigned opt;
    34
    35 /* Initialise */
    36 archive_handle = init_handle();
    37 archive_handle->src_fd = STDIN_FILENO;
    38 archive_handle->seek = seek_by_read;
    39 archive_handle->flags = ARCHIVE_EXTRACT_NEWER | ARCHIVE_PRESERVE_DATE;
    40
    41 opt = getopt32(argc, argv, "ituvF:dm", &cpio_filename);
    42
    43 /* One of either extract or test options must be given */
    44 if ((opt & (CPIO_OPT_TEST | CPIO_OPT_EXTRACT)) == 0) {
    45 bb_show_usage();
    46 }
    47
    48 if (opt & CPIO_OPT_TEST) {
    49 /* if both extract and test options are given, ignore extract option */
    50 if (opt & CPIO_OPT_EXTRACT) {
    51 opt &= ~CPIO_OPT_EXTRACT;
    52 }
    53 archive_handle->action_header = header_list;
    54 }
    55 if (opt & CPIO_OPT_EXTRACT) {
    56 archive_handle->action_data = data_extract_all;
    57 }
    58 if (opt & CPIO_OPT_UNCONDITIONAL) {
    59 archive_handle->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL;
    60 archive_handle->flags &= ~ARCHIVE_EXTRACT_NEWER;
    61 }
    62 if (opt & CPIO_OPT_VERBOSE) {
    63 if (archive_handle->action_header == header_list) {
    64 archive_handle->action_header = header_verbose_list;
    65 } else {
    66 archive_handle->action_header = header_list;
    67 }
    68 }
    69 if (cpio_filename) { /* CPIO_OPT_FILE */
    70 archive_handle->src_fd = xopen(cpio_filename, O_RDONLY);
    71 archive_handle->seek = seek_by_jump;
    72 }
    73 if (opt & CPIO_OPT_CREATE_LEADING_DIR) {
    74 archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
    75 }
    76
    77 while (optind < argc) {
    78 archive_handle->filter = filter_accept_list;
    79 llist_add_to(&(archive_handle->accept), argv[optind]);
    80 optind++;
    81 }
    82
    83 while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
    84
    85 return EXIT_SUCCESS;
    86 }