2 * Copyright (c) 2003-2007 Tim Kientzle
3 * Copyright (c) 2010-2012 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("$FreeBSD$");
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)
345 /* Note: The "warn" return is just to inform the options
346 * supervisor that we didn't handle it. It will generate
347 * a suitable error if no one used this option. */
348 return (ARCHIVE_WARN);
352 archive_read_format_cpio_read_header(struct archive_read *a,
353 struct archive_entry *entry)
357 struct archive_string_conv *sconv;
362 cpio = (struct cpio *)(a->format->data);
363 sconv = cpio->opt_sconv;
365 if (!cpio->init_default_conversion) {
366 cpio->sconv_default =
367 archive_string_default_conversion_for_read(
369 cpio->init_default_conversion = 1;
371 sconv = cpio->sconv_default;
374 r = (cpio->read_header(a, cpio, entry, &namelength, &name_pad));
376 if (r < ARCHIVE_WARN)
379 /* Read name from buffer. */
380 h = __archive_read_ahead(a, namelength + name_pad, NULL);
382 return (ARCHIVE_FATAL);
383 if (archive_entry_copy_pathname_l(entry,
384 (const char *)h, namelength, sconv) != 0) {
385 if (errno == ENOMEM) {
386 archive_set_error(&a->archive, ENOMEM,
387 "Can't allocate memory for Pathname");
388 return (ARCHIVE_FATAL);
390 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
391 "Pathname can't be converted from %s to current locale.",
392 archive_string_conversion_charset_name(sconv));
395 cpio->entry_offset = 0;
397 __archive_read_consume(a, namelength + name_pad);
399 /* If this is a symlink, read the link contents. */
400 if (archive_entry_filetype(entry) == AE_IFLNK) {
401 h = __archive_read_ahead(a, cpio->entry_bytes_remaining, NULL);
403 return (ARCHIVE_FATAL);
404 if (archive_entry_copy_symlink_l(entry, (const char *)h,
405 cpio->entry_bytes_remaining, sconv) != 0) {
406 if (errno == ENOMEM) {
407 archive_set_error(&a->archive, ENOMEM,
408 "Can't allocate memory for Linkname");
409 return (ARCHIVE_FATAL);
411 archive_set_error(&a->archive,
412 ARCHIVE_ERRNO_FILE_FORMAT,
413 "Linkname can't be converted from %s to "
415 archive_string_conversion_charset_name(sconv));
418 __archive_read_consume(a, cpio->entry_bytes_remaining);
419 cpio->entry_bytes_remaining = 0;
422 /* XXX TODO: If the full mode is 0160200, then this is a Solaris
423 * ACL description for the following entry. Read this body
424 * and parse it as a Solaris-style ACL, then read the next
427 /* Compare name to "TRAILER!!!" to test for end-of-archive. */
428 if (namelength == 11 && strcmp((const char *)h, "TRAILER!!!") == 0) {
429 /* TODO: Store file location of start of block. */
430 archive_clear_error(&a->archive);
431 return (ARCHIVE_EOF);
434 /* Detect and record hardlinks to previously-extracted entries. */
435 if (record_hardlink(a, cpio, entry) != ARCHIVE_OK) {
436 return (ARCHIVE_FATAL);
443 archive_read_format_cpio_read_data(struct archive_read *a,
444 const void **buff, size_t *size, int64_t *offset)
449 cpio = (struct cpio *)(a->format->data);
451 if (cpio->entry_bytes_unconsumed) {
452 __archive_read_consume(a, cpio->entry_bytes_unconsumed);
453 cpio->entry_bytes_unconsumed = 0;
456 if (cpio->entry_bytes_remaining > 0) {
457 *buff = __archive_read_ahead(a, 1, &bytes_read);
459 return (ARCHIVE_FATAL);
460 if (bytes_read > cpio->entry_bytes_remaining)
461 bytes_read = cpio->entry_bytes_remaining;
463 cpio->entry_bytes_unconsumed = bytes_read;
464 *offset = cpio->entry_offset;
465 cpio->entry_offset += bytes_read;
466 cpio->entry_bytes_remaining -= bytes_read;
469 if (cpio->entry_padding !=
470 __archive_read_consume(a, cpio->entry_padding)) {
471 return (ARCHIVE_FATAL);
473 cpio->entry_padding = 0;
476 *offset = cpio->entry_offset;
477 return (ARCHIVE_EOF);
482 archive_read_format_cpio_skip(struct archive_read *a)
484 struct cpio *cpio = (struct cpio *)(a->format->data);
485 int64_t to_skip = cpio->entry_bytes_remaining + cpio->entry_padding +
486 cpio->entry_bytes_unconsumed;
488 if (to_skip != __archive_read_consume(a, to_skip)) {
489 return (ARCHIVE_FATAL);
491 cpio->entry_bytes_remaining = 0;
492 cpio->entry_padding = 0;
493 cpio->entry_bytes_unconsumed = 0;
498 * Skip forward to the next cpio newc header by searching for the
499 * 07070[12] string. This should be generalized and merged with
500 * find_odc_header below.
503 is_hex(const char *p, size_t len)
506 if ((*p >= '0' && *p <= '9')
507 || (*p >= 'a' && *p <= 'f')
508 || (*p >= 'A' && *p <= 'F'))
517 find_newc_header(struct archive_read *a)
521 size_t skip, skipped = 0;
525 h = __archive_read_ahead(a, newc_header_size, &bytes);
527 return (ARCHIVE_FATAL);
531 /* Try the typical case first, then go into the slow search.*/
532 if (memcmp("07070", p, 5) == 0
533 && (p[5] == '1' || p[5] == '2')
534 && is_hex(p, newc_header_size))
538 * Scan ahead until we find something that looks
539 * like a newc header.
541 while (p + newc_header_size <= q) {
545 if (memcmp("07070", p, 5) == 0
546 && is_hex(p, newc_header_size)) {
547 skip = p - (const char *)h;
548 __archive_read_consume(a, skip);
551 archive_set_error(&a->archive,
553 "Skipped %d bytes before "
554 "finding valid header",
556 return (ARCHIVE_WARN);
570 skip = p - (const char *)h;
571 __archive_read_consume(a, skip);
577 header_newc(struct archive_read *a, struct cpio *cpio,
578 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
584 r = find_newc_header(a);
585 if (r < ARCHIVE_WARN)
588 /* Read fixed-size portion of header. */
589 h = __archive_read_ahead(a, newc_header_size, NULL);
591 return (ARCHIVE_FATAL);
593 /* Parse out hex fields. */
594 header = (const char *)h;
596 if (memcmp(header + newc_magic_offset, "070701", 6) == 0) {
597 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_NOCRC;
598 a->archive.archive_format_name = "ASCII cpio (SVR4 with no CRC)";
599 } else if (memcmp(header + newc_magic_offset, "070702", 6) == 0) {
600 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_SVR4_CRC;
601 a->archive.archive_format_name = "ASCII cpio (SVR4 with CRC)";
603 /* TODO: Abort here? */
606 archive_entry_set_devmajor(entry, atol16(header + newc_devmajor_offset, newc_devmajor_size));
607 archive_entry_set_devminor(entry, atol16(header + newc_devminor_offset, newc_devminor_size));
608 archive_entry_set_ino(entry, atol16(header + newc_ino_offset, newc_ino_size));
609 archive_entry_set_mode(entry, atol16(header + newc_mode_offset, newc_mode_size));
610 archive_entry_set_uid(entry, atol16(header + newc_uid_offset, newc_uid_size));
611 archive_entry_set_gid(entry, atol16(header + newc_gid_offset, newc_gid_size));
612 archive_entry_set_nlink(entry, atol16(header + newc_nlink_offset, newc_nlink_size));
613 archive_entry_set_rdevmajor(entry, atol16(header + newc_rdevmajor_offset, newc_rdevmajor_size));
614 archive_entry_set_rdevminor(entry, atol16(header + newc_rdevminor_offset, newc_rdevminor_size));
615 archive_entry_set_mtime(entry, atol16(header + newc_mtime_offset, newc_mtime_size), 0);
616 *namelength = atol16(header + newc_namesize_offset, newc_namesize_size);
617 /* Pad name to 2 more than a multiple of 4. */
618 *name_pad = (2 - *namelength) & 3;
621 * Note: entry_bytes_remaining is at least 64 bits and
622 * therefore guaranteed to be big enough for a 33-bit file
625 cpio->entry_bytes_remaining =
626 atol16(header + newc_filesize_offset, newc_filesize_size);
627 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
628 /* Pad file contents to a multiple of 4. */
629 cpio->entry_padding = 3 & -cpio->entry_bytes_remaining;
630 __archive_read_consume(a, newc_header_size);
635 * Skip forward to the next cpio odc header by searching for the
636 * 070707 string. This is a hand-optimized search that could
637 * probably be easily generalized to handle all character-based
641 is_octal(const char *p, size_t len)
644 if (*p < '0' || *p > '7')
652 is_afio_large(const char *h, size_t len)
654 if (len < afiol_header_size)
656 if (h[afiol_ino_m_offset] != 'm'
657 || h[afiol_mtime_n_offset] != 'n'
658 || h[afiol_xsize_s_offset] != 's'
659 || h[afiol_filesize_c_offset] != ':')
661 if (!is_hex(h + afiol_dev_offset, afiol_ino_m_offset - afiol_dev_offset))
663 if (!is_hex(h + afiol_mode_offset, afiol_mtime_n_offset - afiol_mode_offset))
665 if (!is_hex(h + afiol_namesize_offset, afiol_xsize_s_offset - afiol_namesize_offset))
667 if (!is_hex(h + afiol_filesize_offset, afiol_filesize_size))
673 find_odc_header(struct archive_read *a)
677 size_t skip, skipped = 0;
681 h = __archive_read_ahead(a, odc_header_size, &bytes);
683 return (ARCHIVE_FATAL);
687 /* Try the typical case first, then go into the slow search.*/
688 if (memcmp("070707", p, 6) == 0 && is_octal(p, odc_header_size))
690 if (memcmp("070727", p, 6) == 0 && is_afio_large(p, bytes)) {
691 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_AFIO_LARGE;
696 * Scan ahead until we find something that looks
697 * like an odc header.
699 while (p + odc_header_size <= q) {
702 if ((memcmp("070707", p, 6) == 0
703 && is_octal(p, odc_header_size))
704 || (memcmp("070727", p, 6) == 0
705 && is_afio_large(p, q - p))) {
706 skip = p - (const char *)h;
707 __archive_read_consume(a, skip);
710 a->archive.archive_format =
711 ARCHIVE_FORMAT_CPIO_AFIO_LARGE;
713 archive_set_error(&a->archive,
715 "Skipped %d bytes before "
716 "finding valid header",
718 return (ARCHIVE_WARN);
732 skip = p - (const char *)h;
733 __archive_read_consume(a, skip);
739 header_odc(struct archive_read *a, struct cpio *cpio,
740 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
746 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_POSIX;
747 a->archive.archive_format_name = "POSIX octet-oriented cpio";
749 /* Find the start of the next header. */
750 r = find_odc_header(a);
751 if (r < ARCHIVE_WARN)
754 if (a->archive.archive_format == ARCHIVE_FORMAT_CPIO_AFIO_LARGE) {
755 int r2 = (header_afiol(a, cpio, entry, namelength, name_pad));
756 if (r2 == ARCHIVE_OK)
762 /* Read fixed-size portion of header. */
763 h = __archive_read_ahead(a, odc_header_size, NULL);
765 return (ARCHIVE_FATAL);
767 /* Parse out octal fields. */
768 header = (const char *)h;
770 archive_entry_set_dev(entry, atol8(header + odc_dev_offset, odc_dev_size));
771 archive_entry_set_ino(entry, atol8(header + odc_ino_offset, odc_ino_size));
772 archive_entry_set_mode(entry, atol8(header + odc_mode_offset, odc_mode_size));
773 archive_entry_set_uid(entry, atol8(header + odc_uid_offset, odc_uid_size));
774 archive_entry_set_gid(entry, atol8(header + odc_gid_offset, odc_gid_size));
775 archive_entry_set_nlink(entry, atol8(header + odc_nlink_offset, odc_nlink_size));
776 archive_entry_set_rdev(entry, atol8(header + odc_rdev_offset, odc_rdev_size));
777 archive_entry_set_mtime(entry, atol8(header + odc_mtime_offset, odc_mtime_size), 0);
778 *namelength = atol8(header + odc_namesize_offset, odc_namesize_size);
779 *name_pad = 0; /* No padding of filename. */
782 * Note: entry_bytes_remaining is at least 64 bits and
783 * therefore guaranteed to be big enough for a 33-bit file
786 cpio->entry_bytes_remaining =
787 atol8(header + odc_filesize_offset, odc_filesize_size);
788 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
789 cpio->entry_padding = 0;
790 __archive_read_consume(a, odc_header_size);
795 * NOTE: if a filename suffix is ".z", it is the file gziped by afio.
796 * it would be nice that we can show uncompressed file size and we can
797 * uncompressed file contents automatically, unfortunately we have nothing
798 * to get a uncompressed file size while reading each header. it means
799 * we also cannot uncompressed file contens under the our framework.
802 header_afiol(struct archive_read *a, struct cpio *cpio,
803 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
808 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_AFIO_LARGE;
809 a->archive.archive_format_name = "afio large ASCII";
811 /* Read fixed-size portion of header. */
812 h = __archive_read_ahead(a, afiol_header_size, NULL);
814 return (ARCHIVE_FATAL);
816 /* Parse out octal fields. */
817 header = (const char *)h;
819 archive_entry_set_dev(entry, atol16(header + afiol_dev_offset, afiol_dev_size));
820 archive_entry_set_ino(entry, atol16(header + afiol_ino_offset, afiol_ino_size));
821 archive_entry_set_mode(entry, atol8(header + afiol_mode_offset, afiol_mode_size));
822 archive_entry_set_uid(entry, atol16(header + afiol_uid_offset, afiol_uid_size));
823 archive_entry_set_gid(entry, atol16(header + afiol_gid_offset, afiol_gid_size));
824 archive_entry_set_nlink(entry, atol16(header + afiol_nlink_offset, afiol_nlink_size));
825 archive_entry_set_rdev(entry, atol16(header + afiol_rdev_offset, afiol_rdev_size));
826 archive_entry_set_mtime(entry, atol16(header + afiol_mtime_offset, afiol_mtime_size), 0);
827 *namelength = atol16(header + afiol_namesize_offset, afiol_namesize_size);
828 *name_pad = 0; /* No padding of filename. */
830 cpio->entry_bytes_remaining =
831 atol16(header + afiol_filesize_offset, afiol_filesize_size);
832 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
833 cpio->entry_padding = 0;
834 __archive_read_consume(a, afiol_header_size);
840 header_bin_le(struct archive_read *a, struct cpio *cpio,
841 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
844 const unsigned char *header;
846 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_BIN_LE;
847 a->archive.archive_format_name = "cpio (little-endian binary)";
849 /* Read fixed-size portion of header. */
850 h = __archive_read_ahead(a, bin_header_size, NULL);
852 return (ARCHIVE_FATAL);
854 /* Parse out binary fields. */
855 header = (const unsigned char *)h;
857 archive_entry_set_dev(entry, header[bin_dev_offset] + header[bin_dev_offset + 1] * 256);
858 archive_entry_set_ino(entry, header[bin_ino_offset] + header[bin_ino_offset + 1] * 256);
859 archive_entry_set_mode(entry, header[bin_mode_offset] + header[bin_mode_offset + 1] * 256);
860 archive_entry_set_uid(entry, header[bin_uid_offset] + header[bin_uid_offset + 1] * 256);
861 archive_entry_set_gid(entry, header[bin_gid_offset] + header[bin_gid_offset + 1] * 256);
862 archive_entry_set_nlink(entry, header[bin_nlink_offset] + header[bin_nlink_offset + 1] * 256);
863 archive_entry_set_rdev(entry, header[bin_rdev_offset] + header[bin_rdev_offset + 1] * 256);
864 archive_entry_set_mtime(entry, le4(header + bin_mtime_offset), 0);
865 *namelength = header[bin_namesize_offset] + header[bin_namesize_offset + 1] * 256;
866 *name_pad = *namelength & 1; /* Pad to even. */
868 cpio->entry_bytes_remaining = le4(header + bin_filesize_offset);
869 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
870 cpio->entry_padding = cpio->entry_bytes_remaining & 1; /* Pad to even. */
871 __archive_read_consume(a, bin_header_size);
876 header_bin_be(struct archive_read *a, struct cpio *cpio,
877 struct archive_entry *entry, size_t *namelength, size_t *name_pad)
880 const unsigned char *header;
882 a->archive.archive_format = ARCHIVE_FORMAT_CPIO_BIN_BE;
883 a->archive.archive_format_name = "cpio (big-endian binary)";
885 /* Read fixed-size portion of header. */
886 h = __archive_read_ahead(a, bin_header_size, NULL);
888 return (ARCHIVE_FATAL);
890 /* Parse out binary fields. */
891 header = (const unsigned char *)h;
893 archive_entry_set_dev(entry, header[bin_dev_offset] * 256 + header[bin_dev_offset + 1]);
894 archive_entry_set_ino(entry, header[bin_ino_offset] * 256 + header[bin_ino_offset + 1]);
895 archive_entry_set_mode(entry, header[bin_mode_offset] * 256 + header[bin_mode_offset + 1]);
896 archive_entry_set_uid(entry, header[bin_uid_offset] * 256 + header[bin_uid_offset + 1]);
897 archive_entry_set_gid(entry, header[bin_gid_offset] * 256 + header[bin_gid_offset + 1]);
898 archive_entry_set_nlink(entry, header[bin_nlink_offset] * 256 + header[bin_nlink_offset + 1]);
899 archive_entry_set_rdev(entry, header[bin_rdev_offset] * 256 + header[bin_rdev_offset + 1]);
900 archive_entry_set_mtime(entry, be4(header + bin_mtime_offset), 0);
901 *namelength = header[bin_namesize_offset] * 256 + header[bin_namesize_offset + 1];
902 *name_pad = *namelength & 1; /* Pad to even. */
904 cpio->entry_bytes_remaining = be4(header + bin_filesize_offset);
905 archive_entry_set_size(entry, cpio->entry_bytes_remaining);
906 cpio->entry_padding = cpio->entry_bytes_remaining & 1; /* Pad to even. */
907 __archive_read_consume(a, bin_header_size);
912 archive_read_format_cpio_cleanup(struct archive_read *a)
916 cpio = (struct cpio *)(a->format->data);
917 /* Free inode->name map */
918 while (cpio->links_head != NULL) {
919 struct links_entry *lp = cpio->links_head->next;
921 if (cpio->links_head->name)
922 free(cpio->links_head->name);
923 free(cpio->links_head);
924 cpio->links_head = lp;
927 (a->format->data) = NULL;
932 le4(const unsigned char *p)
934 return ((p[0]<<16) + (p[1]<<24) + (p[2]<<0) + (p[3]<<8));
939 be4(const unsigned char *p)
941 return ((p[0]<<24) + (p[1]<<16) + (p[2]<<8) + (p[3]));
945 * Note that this implementation does not (and should not!) obey
946 * locale settings; you cannot simply substitute strtol here, since
947 * it does obey locale.
950 atol8(const char *p, unsigned char_cnt)
956 while (char_cnt-- > 0) {
957 if (*p >= '0' && *p <= '7')
969 atol16(const char *p, unsigned char_cnt)
975 while (char_cnt-- > 0) {
976 if (*p >= 'a' && *p <= 'f')
977 digit = *p - 'a' + 10;
978 else if (*p >= 'A' && *p <= 'F')
979 digit = *p - 'A' + 10;
980 else if (*p >= '0' && *p <= '9')
992 record_hardlink(struct archive_read *a,
993 struct cpio *cpio, struct archive_entry *entry)
995 struct links_entry *le;
999 if (archive_entry_nlink(entry) <= 1)
1000 return (ARCHIVE_OK);
1002 dev = archive_entry_dev(entry);
1003 ino = archive_entry_ino64(entry);
1006 * First look in the list of multiply-linked files. If we've
1007 * already dumped it, convert this entry to a hard link entry.
1009 for (le = cpio->links_head; le; le = le->next) {
1010 if (le->dev == dev && le->ino == ino) {
1011 archive_entry_copy_hardlink(entry, le->name);
1013 if (--le->links <= 0) {
1014 if (le->previous != NULL)
1015 le->previous->next = le->next;
1016 if (le->next != NULL)
1017 le->next->previous = le->previous;
1018 if (cpio->links_head == le)
1019 cpio->links_head = le->next;
1024 return (ARCHIVE_OK);
1028 le = (struct links_entry *)malloc(sizeof(struct links_entry));
1030 archive_set_error(&a->archive,
1031 ENOMEM, "Out of memory adding file to list");
1032 return (ARCHIVE_FATAL);
1034 if (cpio->links_head != NULL)
1035 cpio->links_head->previous = le;
1036 le->next = cpio->links_head;
1037 le->previous = NULL;
1038 cpio->links_head = le;
1041 le->links = archive_entry_nlink(entry) - 1;
1042 le->name = strdup(archive_entry_pathname(entry));
1043 if (le->name == NULL) {
1044 archive_set_error(&a->archive,
1045 ENOMEM, "Out of memory adding file to list");
1046 return (ARCHIVE_FATAL);
1049 return (ARCHIVE_OK);