2 * Copyright (c) 2003-2007 Tim Kientzle
3 * Copyright (c) 2010-2011 Michihiro NAKAJIMA
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include "archive_platform.h"
28 __FBSDID("$FreeBSD: head/lib/libarchive/archive_read_support_format_cpio.c 201163 2009-12-29 05:50:34Z kientzle $");
33 /* #include <stdint.h> */ /* See archive_platform.h */
42 #include "archive_entry.h"
43 #include "archive_entry_locale.h"
44 #include "archive_private.h"
45 #include "archive_read_private.h"
47 #define bin_magic_offset 0
48 #define bin_magic_size 2
49 #define bin_dev_offset 2
50 #define bin_dev_size 2
51 #define bin_ino_offset 4
52 #define bin_ino_size 2
53 #define bin_mode_offset 6
54 #define bin_mode_size 2
55 #define bin_uid_offset 8
56 #define bin_uid_size 2
57 #define bin_gid_offset 10
58 #define bin_gid_size 2
59 #define bin_nlink_offset 12
60 #define bin_nlink_size 2
61 #define bin_rdev_offset 14
62 #define bin_rdev_size 2
63 #define bin_mtime_offset 16
64 #define bin_mtime_size 4
65 #define bin_namesize_offset 20
66 #define bin_namesize_size 2
67 #define bin_filesize_offset 22
68 #define bin_filesize_size 4
69 #define bin_header_size 26
71 #define odc_magic_offset 0
72 #define odc_magic_size 6
73 #define odc_dev_offset 6
74 #define odc_dev_size 6
75 #define odc_ino_offset 12
76 #define odc_ino_size 6
77 #define odc_mode_offset 18
78 #define odc_mode_size 6
79 #define odc_uid_offset 24
80 #define odc_uid_size 6
81 #define odc_gid_offset 30
82 #define odc_gid_size 6
83 #define odc_nlink_offset 36
84 #define odc_nlink_size 6
85 #define odc_rdev_offset 42
86 #define odc_rdev_size 6
87 #define odc_mtime_offset 48
88 #define odc_mtime_size 11
89 #define odc_namesize_offset 59
90 #define odc_namesize_size 6
91 #define odc_filesize_offset 65
92 #define odc_filesize_size 11
93 #define odc_header_size 76
95 #define newc_magic_offset 0
96 #define newc_magic_size 6
97 #define newc_ino_offset 6
98 #define newc_ino_size 8
99 #define newc_mode_offset 14
100 #define newc_mode_size 8
101 #define newc_uid_offset 22
102 #define newc_uid_size 8
103 #define newc_gid_offset 30
104 #define newc_gid_size 8
105 #define newc_nlink_offset 38
106 #define newc_nlink_size 8
107 #define newc_mtime_offset 46
108 #define newc_mtime_size 8
109 #define newc_filesize_offset 54
110 #define newc_filesize_size 8
111 #define newc_devmajor_offset 62
112 #define newc_devmajor_size 8
113 #define newc_devminor_offset 70
114 #define newc_devminor_size 8
115 #define newc_rdevmajor_offset 78
116 #define newc_rdevmajor_size 8
117 #define newc_rdevminor_offset 86
118 #define newc_rdevminor_size 8
119 #define newc_namesize_offset 94
120 #define newc_namesize_size 8
121 #define newc_checksum_offset 102
122 #define newc_checksum_size 8
123 #define newc_header_size 110
126 * An afio large ASCII header, which they named itself.
127 * afio utility uses this header, if a file size is larger than 2G bytes
128 * or inode/uid/gid is bigger than 65535(0xFFFF) or mtime is bigger than
129 * 0x7fffffff, which we cannot record to odc header because of its limit.
130 * If not, uses odc header.
132 #define afiol_magic_offset 0
133 #define afiol_magic_size 6
134 #define afiol_dev_offset 6
135 #define afiol_dev_size 8 /* hex */
136 #define afiol_ino_offset 14
137 #define afiol_ino_size 16 /* hex */
138 #define afiol_ino_m_offset 30 /* 'm' */
139 #define afiol_mode_offset 31
140 #define afiol_mode_size 6 /* oct */
141 #define afiol_uid_offset 37
142 #define afiol_uid_size 8 /* hex */
143 #define afiol_gid_offset 45
144 #define afiol_gid_size 8 /* hex */
145 #define afiol_nlink_offset 53
146 #define afiol_nlink_size 8 /* hex */
147 #define afiol_rdev_offset 61
148 #define afiol_rdev_size 8 /* hex */
149 #define afiol_mtime_offset 69
150 #define afiol_mtime_size 16 /* hex */
151 #define afiol_mtime_n_offset 85 /* 'n' */
152 #define afiol_namesize_offset 86
153 #define afiol_namesize_size 4 /* hex */
154 #define afiol_flag_offset 90
155 #define afiol_flag_size 4 /* hex */
156 #define afiol_xsize_offset 94
157 #define afiol_xsize_size 4 /* hex */
158 #define afiol_xsize_s_offset 98 /* 's' */
159 #define afiol_filesize_offset 99
160 #define afiol_filesize_size 16 /* hex */
161 #define afiol_filesize_c_offset 115 /* ':' */
162 #define afiol_header_size 116
166 struct links_entry *next;
167 struct links_entry *previous;
174 #define CPIO_MAGIC 0x13141516
177 int (*read_header)(struct archive_read *, struct cpio *,
178 struct archive_entry *, size_t *, size_t *);
179 struct links_entry *links_head;
180 int64_t entry_bytes_remaining;
181 int64_t entry_bytes_unconsumed;
182 int64_t entry_offset;
183 int64_t entry_padding;
185 struct archive_string_conv *opt_sconv;
186 struct archive_string_conv *sconv_default;
187 int init_default_conversion;
190 static int64_t atol16(const char *, unsigned);
191 static int64_t atol8(const char *, unsigned);
192 static int archive_read_format_cpio_bid(struct archive_read *, int);
193 static int archive_read_format_cpio_options(struct archive_read *,
194 const char *, const char *);
195 static int archive_read_format_cpio_cleanup(struct archive_read *);
196 static int archive_read_format_cpio_read_data(struct archive_read *,
197 const void **, size_t *, int64_t *);
198 static int archive_read_format_cpio_read_header(struct archive_read *,
199 struct archive_entry *);
200 static int archive_read_format_cpio_skip(struct archive_read *);
201 static int be4(const unsigned char *);
202 static int find_odc_header(struct archive_read *);
203 static int find_newc_header(struct archive_read *);
204 static int header_bin_be(struct archive_read *, struct cpio *,
205 struct archive_entry *, size_t *, size_t *);
206 static int header_bin_le(struct archive_read *, struct cpio *,
207 struct archive_entry *, size_t *, size_t *);
208 static int header_newc(struct archive_read *, struct cpio *,
209 struct archive_entry *, size_t *, size_t *);
210 static int header_odc(struct archive_read *, struct cpio *,
211 struct archive_entry *, size_t *, size_t *);
212 static int header_afiol(struct archive_read *, struct cpio *,
213 struct archive_entry *, size_t *, size_t *);
214 static int is_octal(const char *, size_t);
215 static int is_hex(const char *, size_t);
216 static int le4(const unsigned char *);
217 static int record_hardlink(struct archive_read *a,
218 struct cpio *cpio, struct archive_entry *entry);
221 archive_read_support_format_cpio(struct archive *_a)
223 struct archive_read *a = (struct archive_read *)_a;
227 archive_check_magic(_a, ARCHIVE_READ_MAGIC,
228 ARCHIVE_STATE_NEW, "archive_read_support_format_cpio");
230 cpio = (struct cpio *)calloc(1, sizeof(*cpio));
232 archive_set_error(&a->archive, ENOMEM, "Can't allocate cpio data");
233 return (ARCHIVE_FATAL);
235 cpio->magic = CPIO_MAGIC;
237 r = __archive_read_register_format(a,
240 archive_read_format_cpio_bid,
241 archive_read_format_cpio_options,
242 archive_read_format_cpio_read_header,
243 archive_read_format_cpio_read_data,
244 archive_read_format_cpio_skip,
245 archive_read_format_cpio_cleanup);
254 archive_read_format_cpio_bid(struct archive_read *a, int best_bid)
256 const unsigned char *p;
260 (void)best_bid; /* UNUSED */
262 cpio = (struct cpio *)(a->format->data);
264 if ((p = __archive_read_ahead(a, 6, NULL)) == NULL)
268 if (memcmp(p, "070707", 6) == 0) {
269 /* ASCII cpio archive (odc, POSIX.1) */
270 cpio->read_header = header_odc;
273 * XXX TODO: More verification; Could check that only octal
274 * digits appear in appropriate header locations. XXX
276 } else if (memcmp(p, "070727", 6) == 0) {
277 /* afio large ASCII cpio archive */
278 cpio->read_header = header_odc;
281 * XXX TODO: More verification; Could check that almost hex
282 * digits appear in appropriate header locations. XXX
284 } else if (memcmp(p, "070701", 6) == 0) {
285 /* ASCII cpio archive (SVR4 without CRC) */
286 cpio->read_header = header_newc;
289 * XXX TODO: More verification; Could check that only hex
290 * digits appear in appropriate header locations. XXX
292 } else if (memcmp(p, "070702", 6) == 0) {
293 /* ASCII cpio archive (SVR4 with CRC) */
294 /* XXX TODO: Flag that we should check the CRC. XXX */
295 cpio->read_header = header_newc;
298 * XXX TODO: More verification; Could check that only hex
299 * digits appear in appropriate header locations. XXX
301 } else if (p[0] * 256 + p[1] == 070707) {
302 /* big-endian binary cpio archives */
303 cpio->read_header = header_bin_be;
305 /* Is more verification possible here? */
306 } else if (p[0] + p[1] * 256 == 070707) {
307 /* little-endian binary cpio archives */
308 cpio->read_header = header_bin_le;
310 /* Is more verification possible here? */
312 return (ARCHIVE_WARN);
318 archive_read_format_cpio_options(struct archive_read *a,
319 const char *key, const char *val)
322 int ret = ARCHIVE_FAILED;
324 cpio = (struct cpio *)(a->format->data);
325 if (strcmp(key, "compat-2x") == 0) {
326 /* Handle filnames as libarchive 2.x */
327 cpio->init_default_conversion = (val != NULL)?1:0;
329 } else if (strcmp(key, "hdrcharset") == 0) {
330 if (val == NULL || val[0] == 0)
331 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
332 "cpio: hdrcharset option needs a character-set name");
335 archive_string_conversion_from_charset(
336 &a->archive, val, 0);
337 if (cpio->opt_sconv != NULL)
343 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
344 "cpio: unknown keyword ``%s''", key);
350 archive_read_format_cpio_read_header(struct archive_read *a,
351 struct archive_entry *entry)
355 struct archive_string_conv *sconv;
360 cpio = (struct cpio *)(a->format->data);
361 sconv = cpio->opt_sconv;
363 if (!cpio->init_default_conversion) {
364 cpio->sconv_default =
365 archive_string_default_conversion_for_read(
367 cpio->init_default_conversion = 1;
369 sconv = cpio->sconv_default;
372 r = (cpio->read_header(a, cpio, entry, &namelength, &name_pad));
374 if (r < ARCHIVE_WARN)
377 /* Read name from buffer. */
378 h = __archive_read_ahead(a, namelength + name_pad, NULL);
380 return (ARCHIVE_FATAL);
381 if (archive_entry_copy_pathname_l(entry,
382 (const char *)h, namelength, sconv) != 0) {
383 if (errno == ENOMEM) {
384 archive_set_error(&a->archive, ENOMEM,
385 "Can't allocate memory for Pathname");
386 return (ARCHIVE_FATAL);
388 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
389 "Pathname can't be converted from %s to current locale.",
390 archive_string_conversion_charset_name(sconv));
393 cpio->entry_offset = 0;
395 __archive_read_consume(a, namelength + name_pad);
397 /* If this is a symlink, read the link contents. */
398 if (archive_entry_filetype(entry) == AE_IFLNK) {
399 h = __archive_read_ahead(a, cpio->entry_bytes_remaining, NULL);
401 return (ARCHIVE_FATAL);
402 if (archive_entry_copy_symlink_l(entry, (const char *)h,
403 cpio->entry_bytes_remaining, sconv) != 0) {
404 if (errno == ENOMEM) {
405 archive_set_error(&a->archive, ENOMEM,
406 "Can't allocate memory for Linkname");
407 return (ARCHIVE_FATAL);
409 archive_set_error(&a->archive,
410 ARCHIVE_ERRNO_FILE_FORMAT,
411 "Linkname can't be converted from %s to "
413 archive_string_conversion_charset_name(sconv));
416 __archive_read_consume(a, cpio->entry_bytes_remaining);
417 cpio->entry_bytes_remaining = 0;
420 /* XXX TODO: If the full mode is 0160200, then this is a Solaris
421 * ACL description for the following entry. Read this body
422 * and parse it as a Solaris-style ACL, then read the next
425 /* Compare name to "TRAILER!!!" to test for end-of-archive. */
426 if (namelength == 11 && strcmp((const char *)h, "TRAILER!!!") == 0) {
427 /* TODO: Store file location of start of block. */
428 archive_clear_error(&a->archive);
429 return (ARCHIVE_EOF);
432 /* Detect and record hardlinks to previously-extracted entries. */
433 if (record_hardlink(a, cpio, entry) != ARCHIVE_OK) {
434 return (ARCHIVE_FATAL);
441 archive_read_format_cpio_read_data(struct archive_read *a,
442 const void **buff, size_t *size, int64_t *offset)
447 cpio = (struct cpio *)(a->format->data);
449 if (cpio->entry_bytes_unconsumed) {
450 __archive_read_consume(a, cpio->entry_bytes_unconsumed);
451 cpio->entry_bytes_unconsumed = 0;
454 if (cpio->entry_bytes_remaining > 0) {
455 *buff = __archive_read_ahead(a, 1, &bytes_read);
457 return (ARCHIVE_FATAL);
458 if (bytes_read > cpio->entry_bytes_remaining)
459 bytes_read = cpio->entry_bytes_remaining;
461 cpio->entry_bytes_unconsumed = bytes_read;
462 *offset = cpio->entry_offset;
463 cpio->entry_offset += bytes_read;
464 cpio->entry_bytes_remaining -= bytes_read;
467 if (cpio->entry_padding !=
468 __archive_read_consume(a, cpio->entry_padding)) {
469 return (ARCHIVE_FATAL);
471 cpio->entry_padding = 0;
474 *offset = cpio->entry_offset;
475 return (ARCHIVE_EOF);
480 archive_read_format_cpio_skip(struct archive_read *a)
482 struct cpio *cpio = (struct cpio *)(a->format->data);
483 int64_t to_skip = cpio->entry_bytes_remaining + cpio->entry_padding +
484 cpio->entry_bytes_unconsumed;
486 if (to_skip != __archive_read_consume(a, to_skip)) {
487 return (ARCHIVE_FATAL);
489 cpio->entry_bytes_remaining = 0;
490 cpio->entry_padding = 0;
491 cpio->entry_bytes_unconsumed = 0;
496 * Skip forward to the next cpio newc header by searching for the
497 * 07070[12] string. This should be generalized and merged with
498 * find_odc_header below.
501 is_hex(const char *p, size_t len)
504 if ((*p >= '0' && *p <= '9')
505 || (*p >= 'a' && *p <= 'f')
506 || (*p >= 'A' && *p <= 'F'))
515 find_newc_header(struct archive_read *a)
519 size_t skip, skipped = 0;
523 h = __archive_read_ahead(a, newc_header_size, &bytes);
525 return (ARCHIVE_FATAL);
529 /* Try the typical case first, then go into the slow search.*/
530 if (memcmp("07070", p, 5) == 0
531 && (p[5] == '1' || p[5] == '2')
532 && is_hex(p, newc_header_size))
536 * Scan ahead until we find something that looks
537 * like a newc header.
539 while (p + newc_header_size <= q) {
543 if (memcmp("07070", p, 5) == 0
544 && is_hex(p, newc_header_size)) {
545 skip = p - (const char *)h;
546 __archive_read_consume(a, skip);
549 archive_set_error(&a->archive,
551 "Skipped %d bytes before "
552 "finding valid header",
554 return (ARCHIVE_WARN);
568 skip = p - (const char *)h;
569 __archive_read_consume(a, skip);
575 header_newc(struct archive_read *a, struct cpio *cpio,
576 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
582 r = find_newc_header(a);
583 if (r < ARCHIVE_WARN)
586 /* Read fixed-size portion of header. */
587 h = __archive_read_ahead(a, newc_header_size, NULL);
589 return (ARCHIVE_FATAL);
591 /* Parse out hex fields. */
592 header = (const char *)h;
594 if (memcmp(header + newc_magic_offset, "070701", 6) == 0) {
595 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_NOCRC;
596 a->archive.archive_format_name = "ASCII cpio (SVR4 with no CRC)";
597 } else if (memcmp(header + newc_magic_offset, "070702", 6) == 0) {
598 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_CRC;
599 a->archive.archive_format_name = "ASCII cpio (SVR4 with CRC)";
601 /* TODO: Abort here? */
604 archive_entry_set_devmajor(entry, atol16(header + newc_devmajor_offset, newc_devmajor_size));
605 archive_entry_set_devminor(entry, atol16(header + newc_devminor_offset, newc_devminor_size));
606 archive_entry_set_ino(entry, atol16(header + newc_ino_offset, newc_ino_size));
607 archive_entry_set_mode(entry, atol16(header + newc_mode_offset, newc_mode_size));
608 archive_entry_set_uid(entry, atol16(header + newc_uid_offset, newc_uid_size));
609 archive_entry_set_gid(entry, atol16(header + newc_gid_offset, newc_gid_size));
610 archive_entry_set_nlink(entry, atol16(header + newc_nlink_offset, newc_nlink_size));
611 archive_entry_set_rdevmajor(entry, atol16(header + newc_rdevmajor_offset, newc_rdevmajor_size));
612 archive_entry_set_rdevminor(entry, atol16(header + newc_rdevminor_offset, newc_rdevminor_size));
613 archive_entry_set_mtime(entry, atol16(header + newc_mtime_offset, newc_mtime_size), 0);
614 *namelength = atol16(header + newc_namesize_offset, newc_namesize_size);
615 /* Pad name to 2 more than a multiple of 4. */
616 *name_pad = (2 - *namelength) & 3;
619 * Note: entry_bytes_remaining is at least 64 bits and
620 * therefore guaranteed to be big enough for a 33-bit file
623 cpio->entry_bytes_remaining =
624 atol16(header + newc_filesize_offset, newc_filesize_size);
625 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
626 /* Pad file contents to a multiple of 4. */
627 cpio->entry_padding = 3 & -cpio->entry_bytes_remaining;
628 __archive_read_consume(a, newc_header_size);
633 * Skip forward to the next cpio odc header by searching for the
634 * 070707 string. This is a hand-optimized search that could
635 * probably be easily generalized to handle all character-based
639 is_octal(const char *p, size_t len)
642 if (*p < '0' || *p > '7')
650 is_afio_large(const char *h, size_t len)
652 if (len < afiol_header_size)
654 if (h[afiol_ino_m_offset] != 'm'
655 || h[afiol_mtime_n_offset] != 'n'
656 || h[afiol_xsize_s_offset] != 's'
657 || h[afiol_filesize_c_offset] != ':')
659 if (!is_hex(h + afiol_dev_offset, afiol_ino_m_offset - afiol_dev_offset))
661 if (!is_hex(h + afiol_mode_offset, afiol_mtime_n_offset - afiol_mode_offset))
663 if (!is_hex(h + afiol_namesize_offset, afiol_xsize_s_offset - afiol_namesize_offset))
665 if (!is_hex(h + afiol_filesize_offset, afiol_filesize_size))
671 find_odc_header(struct archive_read *a)
675 size_t skip, skipped = 0;
679 h = __archive_read_ahead(a, odc_header_size, &bytes);
681 return (ARCHIVE_FATAL);
685 /* Try the typical case first, then go into the slow search.*/
686 if (memcmp("070707", p, 6) == 0 && is_octal(p, odc_header_size))
688 if (memcmp("070727", p, 6) == 0 && is_afio_large(p, bytes)) {
689 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_AFIO_LARGE;
694 * Scan ahead until we find something that looks
695 * like an odc header.
697 while (p + odc_header_size <= q) {
700 if ((memcmp("070707", p, 6) == 0
701 && is_octal(p, odc_header_size))
702 || (memcmp("070727", p, 6) == 0
703 && is_afio_large(p, q - p))) {
704 skip = p - (const char *)h;
705 __archive_read_consume(a, skip);
708 a->archive.archive_format =
709 ARCHIVE_FORMAT_CPIO_AFIO_LARGE;
711 archive_set_error(&a->archive,
713 "Skipped %d bytes before "
714 "finding valid header",
716 return (ARCHIVE_WARN);
730 skip = p - (const char *)h;
731 __archive_read_consume(a, skip);
737 header_odc(struct archive_read *a, struct cpio *cpio,
738 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
744 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_POSIX;
745 a->archive.archive_format_name = "POSIX octet-oriented cpio";
747 /* Find the start of the next header. */
748 r = find_odc_header(a);
749 if (r < ARCHIVE_WARN)
752 if (a->archive.archive_format == ARCHIVE_FORMAT_CPIO_AFIO_LARGE) {
753 int r2 = (header_afiol(a, cpio, entry, namelength, name_pad));
754 if (r2 == ARCHIVE_OK)
760 /* Read fixed-size portion of header. */
761 h = __archive_read_ahead(a, odc_header_size, NULL);
763 return (ARCHIVE_FATAL);
765 /* Parse out octal fields. */
766 header = (const char *)h;
768 archive_entry_set_dev(entry, atol8(header + odc_dev_offset, odc_dev_size));
769 archive_entry_set_ino(entry, atol8(header + odc_ino_offset, odc_ino_size));
770 archive_entry_set_mode(entry, atol8(header + odc_mode_offset, odc_mode_size));
771 archive_entry_set_uid(entry, atol8(header + odc_uid_offset, odc_uid_size));
772 archive_entry_set_gid(entry, atol8(header + odc_gid_offset, odc_gid_size));
773 archive_entry_set_nlink(entry, atol8(header + odc_nlink_offset, odc_nlink_size));
774 archive_entry_set_rdev(entry, atol8(header + odc_rdev_offset, odc_rdev_size));
775 archive_entry_set_mtime(entry, atol8(header + odc_mtime_offset, odc_mtime_size), 0);
776 *namelength = atol8(header + odc_namesize_offset, odc_namesize_size);
777 *name_pad = 0; /* No padding of filename. */
780 * Note: entry_bytes_remaining is at least 64 bits and
781 * therefore guaranteed to be big enough for a 33-bit file
784 cpio->entry_bytes_remaining =
785 atol8(header + odc_filesize_offset, odc_filesize_size);
786 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
787 cpio->entry_padding = 0;
788 __archive_read_consume(a, odc_header_size);
793 * NOTE: if a filename suffix is ".z", it is the file gziped by afio.
794 * it would be nice that we can show uncompressed file size and we can
795 * uncompressed file contents automatically, unfortunately we have nothing
796 * to get a uncompressed file size while reading each header. it means
797 * we also cannot uncompressed file contens under the our framework.
800 header_afiol(struct archive_read *a, struct cpio *cpio,
801 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
806 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_AFIO_LARGE;
807 a->archive.archive_format_name = "afio large ASCII";
809 /* Read fixed-size portion of header. */
810 h = __archive_read_ahead(a, afiol_header_size, NULL);
812 return (ARCHIVE_FATAL);
814 /* Parse out octal fields. */
815 header = (const char *)h;
817 archive_entry_set_dev(entry, atol16(header + afiol_dev_offset, afiol_dev_size));
818 archive_entry_set_ino(entry, atol16(header + afiol_ino_offset, afiol_ino_size));
819 archive_entry_set_mode(entry, atol8(header + afiol_mode_offset, afiol_mode_size));
820 archive_entry_set_uid(entry, atol16(header + afiol_uid_offset, afiol_uid_size));
821 archive_entry_set_gid(entry, atol16(header + afiol_gid_offset, afiol_gid_size));
822 archive_entry_set_nlink(entry, atol16(header + afiol_nlink_offset, afiol_nlink_size));
823 archive_entry_set_rdev(entry, atol16(header + afiol_rdev_offset, afiol_rdev_size));
824 archive_entry_set_mtime(entry, atol16(header + afiol_mtime_offset, afiol_mtime_size), 0);
825 *namelength = atol16(header + afiol_namesize_offset, afiol_namesize_size);
826 *name_pad = 0; /* No padding of filename. */
828 cpio->entry_bytes_remaining =
829 atol16(header + afiol_filesize_offset, afiol_filesize_size);
830 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
831 cpio->entry_padding = 0;
832 __archive_read_consume(a, afiol_header_size);
838 header_bin_le(struct archive_read *a, struct cpio *cpio,
839 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
842 const unsigned char *header;
844 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_BIN_LE;
845 a->archive.archive_format_name = "cpio (little-endian binary)";
847 /* Read fixed-size portion of header. */
848 h = __archive_read_ahead(a, bin_header_size, NULL);
850 return (ARCHIVE_FATAL);
852 /* Parse out binary fields. */
853 header = (const unsigned char *)h;
855 archive_entry_set_dev(entry, header[bin_dev_offset] + header[bin_dev_offset + 1] * 256);
856 archive_entry_set_ino(entry, header[bin_ino_offset] + header[bin_ino_offset + 1] * 256);
857 archive_entry_set_mode(entry, header[bin_mode_offset] + header[bin_mode_offset + 1] * 256);
858 archive_entry_set_uid(entry, header[bin_uid_offset] + header[bin_uid_offset + 1] * 256);
859 archive_entry_set_gid(entry, header[bin_gid_offset] + header[bin_gid_offset + 1] * 256);
860 archive_entry_set_nlink(entry, header[bin_nlink_offset] + header[bin_nlink_offset + 1] * 256);
861 archive_entry_set_rdev(entry, header[bin_rdev_offset] + header[bin_rdev_offset + 1] * 256);
862 archive_entry_set_mtime(entry, le4(header + bin_mtime_offset), 0);
863 *namelength = header[bin_namesize_offset] + header[bin_namesize_offset + 1] * 256;
864 *name_pad = *namelength & 1; /* Pad to even. */
866 cpio->entry_bytes_remaining = le4(header + bin_filesize_offset);
867 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
868 cpio->entry_padding = cpio->entry_bytes_remaining & 1; /* Pad to even. */
869 __archive_read_consume(a, bin_header_size);
874 header_bin_be(struct archive_read *a, struct cpio *cpio,
875 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
878 const unsigned char *header;
880 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_BIN_BE;
881 a->archive.archive_format_name = "cpio (big-endian binary)";
883 /* Read fixed-size portion of header. */
884 h = __archive_read_ahead(a, bin_header_size, NULL);
886 return (ARCHIVE_FATAL);
888 /* Parse out binary fields. */
889 header = (const unsigned char *)h;
891 archive_entry_set_dev(entry, header[bin_dev_offset] * 256 + header[bin_dev_offset + 1]);
892 archive_entry_set_ino(entry, header[bin_ino_offset] * 256 + header[bin_ino_offset + 1]);
893 archive_entry_set_mode(entry, header[bin_mode_offset] * 256 + header[bin_mode_offset + 1]);
894 archive_entry_set_uid(entry, header[bin_uid_offset] * 256 + header[bin_uid_offset + 1]);
895 archive_entry_set_gid(entry, header[bin_gid_offset] * 256 + header[bin_gid_offset + 1]);
896 archive_entry_set_nlink(entry, header[bin_nlink_offset] * 256 + header[bin_nlink_offset + 1]);
897 archive_entry_set_rdev(entry, header[bin_rdev_offset] * 256 + header[bin_rdev_offset + 1]);
898 archive_entry_set_mtime(entry, be4(header + bin_mtime_offset), 0);
899 *namelength = header[bin_namesize_offset] * 256 + header[bin_namesize_offset + 1];
900 *name_pad = *namelength & 1; /* Pad to even. */
902 cpio->entry_bytes_remaining = be4(header + bin_filesize_offset);
903 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
904 cpio->entry_padding = cpio->entry_bytes_remaining & 1; /* Pad to even. */
905 __archive_read_consume(a, bin_header_size);
910 archive_read_format_cpio_cleanup(struct archive_read *a)
914 cpio = (struct cpio *)(a->format->data);
915 /* Free inode->name map */
916 while (cpio->links_head != NULL) {
917 struct links_entry *lp = cpio->links_head->next;
919 if (cpio->links_head->name)
920 free(cpio->links_head->name);
921 free(cpio->links_head);
922 cpio->links_head = lp;
925 (a->format->data) = NULL;
930 le4(const unsigned char *p)
932 return ((p[0]<<16) + (p[1]<<24) + (p[2]<<0) + (p[3]<<8));
937 be4(const unsigned char *p)
939 return ((p[0]<<24) + (p[1]<<16) + (p[2]<<8) + (p[3]));
943 * Note that this implementation does not (and should not!) obey
944 * locale settings; you cannot simply substitute strtol here, since
945 * it does obey locale.
948 atol8(const char *p, unsigned char_cnt)
954 while (char_cnt-- > 0) {
955 if (*p >= '0' && *p <= '7')
967 atol16(const char *p, unsigned char_cnt)
973 while (char_cnt-- > 0) {
974 if (*p >= 'a' && *p <= 'f')
975 digit = *p - 'a' + 10;
976 else if (*p >= 'A' && *p <= 'F')
977 digit = *p - 'A' + 10;
978 else if (*p >= '0' && *p <= '9')
990 record_hardlink(struct archive_read *a,
991 struct cpio *cpio, struct archive_entry *entry)
993 struct links_entry *le;
997 if (archive_entry_nlink(entry) <= 1)
1000 dev = archive_entry_dev(entry);
1001 ino = archive_entry_ino64(entry);
1004 * First look in the list of multiply-linked files. If we've
1005 * already dumped it, convert this entry to a hard link entry.
1007 for (le = cpio->links_head; le; le = le->next) {
1008 if (le->dev == dev && le->ino == ino) {
1009 archive_entry_copy_hardlink(entry, le->name);
1011 if (--le->links <= 0) {
1012 if (le->previous != NULL)
1013 le->previous->next = le->next;
1014 if (le->next != NULL)
1015 le->next->previous = le->previous;
1016 if (cpio->links_head == le)
1017 cpio->links_head = le->next;
1022 return (ARCHIVE_OK);
1026 le = (struct links_entry *)malloc(sizeof(struct links_entry));
1028 archive_set_error(&a->archive,
1029 ENOMEM, "Out of memory adding file to list");
1030 return (ARCHIVE_FATAL);
1032 if (cpio->links_head != NULL)
1033 cpio->links_head->previous = le;
1034 le->next = cpio->links_head;
1035 le->previous = NULL;
1036 cpio->links_head = le;
1039 le->links = archive_entry_nlink(entry) - 1;
1040 le->name = strdup(archive_entry_pathname(entry));
1041 if (le->name == NULL) {
1042 archive_set_error(&a->archive,
1043 ENOMEM, "Out of memory adding file to list");
1044 return (ARCHIVE_FATAL);
1047 return (ARCHIVE_OK);