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