2 * Copyright (c) 1992 Keith Muller.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Keith Muller of the University of California, San Diego.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static char sccsid[] = "@(#)cpio.c 8.1 (Berkeley) 5/31/93";
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
42 #include <sys/types.h>
52 static int rd_nm(ARCHD *, int);
53 static int rd_ln_nm(ARCHD *);
54 static int com_rd(ARCHD *);
57 * Routines which support the different cpio versions
60 static int swp_head; /* binary cpio header byte swap */
63 * Routines common to all versions of cpio
68 * Fire up the hard link detection code
70 * 0 if ok -1 otherwise (the return values of lnk_start())
81 * Called to determine if a header block is a valid trailer. We are
82 * passed the block, the in_sync flag (which tells us we are in resync
83 * mode; looking for a valid header), and cnt (which starts at zero)
84 * which is used to count the number of empty blocks we have seen so far.
86 * 0 if a valid trailer, -1 if not a valid trailer,
90 cpio_trail(ARCHD *arcn)
93 * look for trailer id in file we are about to process
95 if ((strcmp(arcn->name, TRAILER) == 0) && (arcn->sb.st_size == 0))
102 * operations common to all cpio read functions.
112 arcn->org_name = arcn->name;
113 switch(arcn->sb.st_mode & C_IFMT) {
115 arcn->type = PAX_FIF;
118 arcn->type = PAX_DIR;
121 arcn->type = PAX_BLK;
124 arcn->type = PAX_CHR;
127 arcn->type = PAX_SLK;
130 arcn->type = PAX_SCK;
136 * we have file data, set up skip (pad is set in the format
139 arcn->sb.st_mode = (arcn->sb.st_mode & 0xfff) | C_ISREG;
140 arcn->type = PAX_REG;
141 arcn->skip = arcn->sb.st_size;
144 if (chk_lnk(arcn) < 0)
151 * write the special file with the name trailer in the proper format
153 * result of the write of the trailer from the cpio specific write func
162 * create a trailer request and call the proper format write function
164 memset(&last, 0, sizeof(last));
165 last.nlen = sizeof(TRAILER) - 1;
167 last.sb.st_nlink = 1;
168 (void)strcpy(last.name, TRAILER);
169 return((*frmt->wr)(&last));
174 * read in the file name which follows the cpio header
176 * 0 if ok, -1 otherwise
180 rd_nm(ARCHD *arcn, int nsz)
183 * do not even try bogus values
185 if ((nsz == 0) || (nsz > (int)sizeof(arcn->name))) {
186 paxwarn(1, "Cpio file name length %d is out of range", nsz);
191 * read the name and make sure it is not empty and is \0 terminated
193 if ((rd_wrbuf(arcn->name,nsz) != nsz) || (arcn->name[nsz-1] != '\0') ||
194 (arcn->name[0] == '\0')) {
195 paxwarn(1, "Cpio file name in header is corrupted");
203 * read in the link name for a file with links. The link name is stored
204 * like file data (and is NOT \0 terminated!)
206 * 0 if ok, -1 otherwise
210 rd_ln_nm(ARCHD *arcn)
213 * check the length specified for bogus values
215 if ((arcn->sb.st_size == 0) ||
216 ((size_t)arcn->sb.st_size >= sizeof(arcn->ln_name))) {
218 paxwarn(1, "Cpio link name length is invalid: %lu",
221 paxwarn(1, "Cpio link name length is invalid: %ju",
222 (uintmax_t)arcn->sb.st_size);
228 * read in the link name and \0 terminate it
230 if (rd_wrbuf(arcn->ln_name, (int)arcn->sb.st_size) !=
231 (int)arcn->sb.st_size) {
232 paxwarn(1, "Cpio link name read error");
235 arcn->ln_nlen = arcn->sb.st_size;
236 arcn->ln_name[arcn->ln_nlen] = '\0';
239 * watch out for those empty link names
241 if (arcn->ln_name[0] == '\0') {
242 paxwarn(1, "Cpio link name is corrupt");
249 * Routines common to the extended byte oriented cpio format
254 * determine if a block given to us is a valid extended byte oriented
257 * 0 if a valid header, -1 otherwise
261 cpio_id(char *blk, int size)
263 if ((size < (int)sizeof(HD_CPIO)) ||
264 (strncmp(blk, AMAGIC, sizeof(AMAGIC) - 1) != 0))
271 * determine if a buffer is a byte oriented extended cpio archive entry.
272 * convert and store the values in the ARCHD parameter.
274 * 0 if a valid header, -1 otherwise.
278 cpio_rd(ARCHD *arcn, char *buf)
284 * check that this is a valid header, if not return -1
286 if (cpio_id(buf, sizeof(HD_CPIO)) < 0)
291 * byte oriented cpio (posix) does not have padding! extract the octal
292 * ascii fields from the header
295 arcn->sb.st_dev = (dev_t)asc_ul(hd->c_dev, sizeof(hd->c_dev), OCT);
296 arcn->sb.st_ino = (ino_t)asc_ul(hd->c_ino, sizeof(hd->c_ino), OCT);
297 arcn->sb.st_mode = (mode_t)asc_ul(hd->c_mode, sizeof(hd->c_mode), OCT);
298 arcn->sb.st_uid = (uid_t)asc_ul(hd->c_uid, sizeof(hd->c_uid), OCT);
299 arcn->sb.st_gid = (gid_t)asc_ul(hd->c_gid, sizeof(hd->c_gid), OCT);
300 arcn->sb.st_nlink = (nlink_t)asc_ul(hd->c_nlink, sizeof(hd->c_nlink),
302 arcn->sb.st_rdev = (dev_t)asc_ul(hd->c_rdev, sizeof(hd->c_rdev), OCT);
304 arcn->sb.st_mtime = (time_t)asc_ul(hd->c_mtime, sizeof(hd->c_mtime),
307 arcn->sb.st_mtime = (time_t)asc_uqd(hd->c_mtime, sizeof(hd->c_mtime),
310 arcn->sb.st_ctime = arcn->sb.st_atime = arcn->sb.st_mtime;
312 arcn->sb.st_size = (off_t)asc_ul(hd->c_filesize,sizeof(hd->c_filesize),
315 arcn->sb.st_size = (off_t)asc_uqd(hd->c_filesize,sizeof(hd->c_filesize),
320 * check name size and if valid, read in the name of this entry (name
321 * follows header in the archive)
323 if ((nsz = (int)asc_ul(hd->c_namesize,sizeof(hd->c_namesize),OCT)) < 2)
325 arcn->nlen = nsz - 1;
326 if (rd_nm(arcn, nsz) < 0)
329 if (((arcn->sb.st_mode&C_IFMT) != C_ISLNK)||(arcn->sb.st_size == 0)) {
331 * no link name to read for this file
334 arcn->ln_name[0] = '\0';
335 return(com_rd(arcn));
339 * check link name size and read in the link name. Link names are
340 * stored like file data.
342 if (rd_ln_nm(arcn) < 0)
346 * we have a valid header (with a link)
348 return(com_rd(arcn));
353 * no cleanup needed here, just return size of the trailer (for append)
355 * size of trailer header in this format
361 return((off_t)(sizeof(HD_CPIO) + sizeof(TRAILER)));
366 * start up the device mapping table
368 * 0 if ok, -1 otherwise (what dev_start() returns)
379 * copy the data in the ARCHD to buffer in extended byte oriented cpio
382 * 0 if file has data to be written after the header, 1 if file has NO
383 * data to write after the header, -1 if archive write failed
394 * check and repair truncated device and inode fields in the header
396 if (map_dev(arcn, (u_long)CPIO_MASK, (u_long)CPIO_MASK) < 0)
400 nsz = arcn->nlen + 1;
402 if ((arcn->type != PAX_BLK) && (arcn->type != PAX_CHR))
403 arcn->sb.st_rdev = 0;
410 * set data size for file data
413 if (ul_asc((u_long)arcn->sb.st_size, hd->c_filesize,
414 sizeof(hd->c_filesize), OCT)) {
416 if (uqd_asc((u_quad_t)arcn->sb.st_size, hd->c_filesize,
417 sizeof(hd->c_filesize), OCT)) {
419 paxwarn(1,"File is too large for cpio format %s",
426 * set data size to hold link name
428 if (ul_asc((u_long)arcn->ln_nlen, hd->c_filesize,
429 sizeof(hd->c_filesize), OCT))
434 * all other file types have no file data
436 if (ul_asc((u_long)0, hd->c_filesize, sizeof(hd->c_filesize),
443 * copy the values to the header using octal ascii
445 if (ul_asc((u_long)MAGIC, hd->c_magic, sizeof(hd->c_magic), OCT) ||
446 ul_asc((u_long)arcn->sb.st_dev, hd->c_dev, sizeof(hd->c_dev),
448 ul_asc((u_long)arcn->sb.st_ino, hd->c_ino, sizeof(hd->c_ino),
450 ul_asc((u_long)arcn->sb.st_mode, hd->c_mode, sizeof(hd->c_mode),
452 ul_asc((u_long)arcn->sb.st_uid, hd->c_uid, sizeof(hd->c_uid),
454 ul_asc((u_long)arcn->sb.st_gid, hd->c_gid, sizeof(hd->c_gid),
456 ul_asc((u_long)arcn->sb.st_nlink, hd->c_nlink, sizeof(hd->c_nlink),
458 ul_asc((u_long)arcn->sb.st_rdev, hd->c_rdev, sizeof(hd->c_rdev),
460 ul_asc((u_long)arcn->sb.st_mtime,hd->c_mtime,sizeof(hd->c_mtime),
462 ul_asc((u_long)nsz, hd->c_namesize, sizeof(hd->c_namesize), OCT))
466 * write the file name to the archive
468 if ((wr_rdbuf((char *)&hdblk, (int)sizeof(HD_CPIO)) < 0) ||
469 (wr_rdbuf(arcn->name, nsz) < 0)) {
470 paxwarn(1, "Unable to write cpio header for %s", arcn->org_name);
475 * if this file has data, we are done. The caller will write the file
476 * data, if we are link tell caller we are done, go to next file
478 if ((arcn->type == PAX_CTG) || (arcn->type == PAX_REG) ||
479 (arcn->type == PAX_HRG))
481 if (arcn->type != PAX_SLK)
485 * write the link name to the archive, tell the caller to go to the
486 * next file as we are done.
488 if (wr_rdbuf(arcn->ln_name, arcn->ln_nlen) < 0) {
489 paxwarn(1,"Unable to write cpio link name for %s",arcn->org_name);
496 * header field is out of range
498 paxwarn(1, "Cpio header field is too small to store file %s",
504 * Routines common to the system VR4 version of cpio (with/without file CRC)
509 * determine if a block given to us is a valid system VR4 cpio header
510 * WITHOUT crc. WATCH it the magic cookies are in OCTAL, the header
513 * 0 if a valid header, -1 otherwise
517 vcpio_id(char *blk, int size)
519 if ((size < (int)sizeof(HD_VCPIO)) ||
520 (strncmp(blk, AVMAGIC, sizeof(AVMAGIC) - 1) != 0))
527 * determine if a block given to us is a valid system VR4 cpio header
528 * WITH crc. WATCH it the magic cookies are in OCTAL the header uses HEX
530 * 0 if a valid header, -1 otherwise
534 crc_id(char *blk, int size)
536 if ((size < (int)sizeof(HD_VCPIO)) ||
537 (strncmp(blk, AVCMAGIC, (int)sizeof(AVCMAGIC) - 1) != 0))
544 w set file data CRC calculations. Fire up the hard link detection code
546 * 0 if ok -1 otherwise (the return values of lnk_start())
558 * determine if a buffer is a system VR4 archive entry. (with/without CRC)
559 * convert and store the values in the ARCHD parameter.
561 * 0 if a valid header, -1 otherwise.
565 vcpio_rd(ARCHD *arcn, char *buf)
573 * during the id phase it was determined if we were using CRC, use the
577 if (crc_id(buf, sizeof(HD_VCPIO)) < 0)
580 if (vcpio_id(buf, sizeof(HD_VCPIO)) < 0)
584 hd = (HD_VCPIO *)buf;
588 * extract the hex ascii fields from the header
590 arcn->sb.st_ino = (ino_t)asc_ul(hd->c_ino, sizeof(hd->c_ino), HEX);
591 arcn->sb.st_mode = (mode_t)asc_ul(hd->c_mode, sizeof(hd->c_mode), HEX);
592 arcn->sb.st_uid = (uid_t)asc_ul(hd->c_uid, sizeof(hd->c_uid), HEX);
593 arcn->sb.st_gid = (gid_t)asc_ul(hd->c_gid, sizeof(hd->c_gid), HEX);
595 arcn->sb.st_mtime = (time_t)asc_ul(hd->c_mtime,sizeof(hd->c_mtime),HEX);
597 arcn->sb.st_mtime = (time_t)asc_uqd(hd->c_mtime,sizeof(hd->c_mtime),HEX);
599 arcn->sb.st_ctime = arcn->sb.st_atime = arcn->sb.st_mtime;
601 arcn->sb.st_size = (off_t)asc_ul(hd->c_filesize,
602 sizeof(hd->c_filesize), HEX);
604 arcn->sb.st_size = (off_t)asc_uqd(hd->c_filesize,
605 sizeof(hd->c_filesize), HEX);
607 arcn->sb.st_nlink = (nlink_t)asc_ul(hd->c_nlink, sizeof(hd->c_nlink),
609 devmajor = (dev_t)asc_ul(hd->c_maj, sizeof(hd->c_maj), HEX);
610 devminor = (dev_t)asc_ul(hd->c_min, sizeof(hd->c_min), HEX);
611 arcn->sb.st_dev = TODEV(devmajor, devminor);
612 devmajor = (dev_t)asc_ul(hd->c_rmaj, sizeof(hd->c_maj), HEX);
613 devminor = (dev_t)asc_ul(hd->c_rmin, sizeof(hd->c_min), HEX);
614 arcn->sb.st_rdev = TODEV(devmajor, devminor);
615 arcn->crc = asc_ul(hd->c_chksum, sizeof(hd->c_chksum), HEX);
618 * check the length of the file name, if ok read it in, return -1 if
621 if ((nsz = (int)asc_ul(hd->c_namesize,sizeof(hd->c_namesize),HEX)) < 2)
623 arcn->nlen = nsz - 1;
624 if (rd_nm(arcn, nsz) < 0)
628 * skip padding. header + filename is aligned to 4 byte boundaries
630 if (rd_skip((off_t)(VCPIO_PAD(sizeof(HD_VCPIO) + nsz))) < 0)
634 * if not a link (or a file with no data), calculate pad size (for
635 * padding which follows the file data), clear the link name and return
637 if (((arcn->sb.st_mode&C_IFMT) != C_ISLNK)||(arcn->sb.st_size == 0)) {
639 * we have a valid header (not a link)
642 arcn->ln_name[0] = '\0';
643 arcn->pad = VCPIO_PAD(arcn->sb.st_size);
644 return(com_rd(arcn));
648 * read in the link name and skip over the padding
650 if ((rd_ln_nm(arcn) < 0) ||
651 (rd_skip((off_t)(VCPIO_PAD(arcn->sb.st_size))) < 0))
655 * we have a valid header (with a link)
657 return(com_rd(arcn));
662 * no cleanup needed here, just return size of the trailer (for append)
664 * size of trailer header in this format
670 return((off_t)(sizeof(HD_VCPIO) + sizeof(TRAILER) +
671 (VCPIO_PAD(sizeof(HD_VCPIO) + sizeof(TRAILER)))));
676 * start up the device mapping table, enable crc file calculation
678 * 0 if ok, -1 otherwise (what dev_start() returns)
690 * copy the data in the ARCHD to buffer in system VR4 cpio
691 * (with/without crc) format.
693 * 0 if file has data to be written after the header, 1 if file has
694 * NO data to write after the header, -1 if archive write failed
698 vcpio_wr(ARCHD *arcn)
705 * check and repair truncated device and inode fields in the cpio
708 if (map_dev(arcn, (u_long)VCPIO_MASK, (u_long)VCPIO_MASK) < 0)
710 nsz = arcn->nlen + 1;
712 if ((arcn->type != PAX_BLK) && (arcn->type != PAX_CHR))
713 arcn->sb.st_rdev = 0;
716 * add the proper magic value depending whether we were asked for
717 * file data crc's, and the crc if needed.
720 if (ul_asc((u_long)VCMAGIC, hd->c_magic, sizeof(hd->c_magic),
722 ul_asc((u_long)arcn->crc,hd->c_chksum,sizeof(hd->c_chksum),
726 if (ul_asc((u_long)VMAGIC, hd->c_magic, sizeof(hd->c_magic),
728 ul_asc((u_long)0L, hd->c_chksum, sizeof(hd->c_chksum),HEX))
737 * caller will copy file data to the archive. tell him how
740 arcn->pad = VCPIO_PAD(arcn->sb.st_size);
742 if (ul_asc((u_long)arcn->sb.st_size, hd->c_filesize,
743 sizeof(hd->c_filesize), HEX)) {
745 if (uqd_asc((u_quad_t)arcn->sb.st_size, hd->c_filesize,
746 sizeof(hd->c_filesize), HEX)) {
748 paxwarn(1,"File is too large for sv4cpio format %s",
755 * no file data for the caller to process, the file data has
756 * the size of the link
759 if (ul_asc((u_long)arcn->ln_nlen, hd->c_filesize,
760 sizeof(hd->c_filesize), HEX))
765 * no file data for the caller to process
768 if (ul_asc((u_long)0L, hd->c_filesize, sizeof(hd->c_filesize),
775 * set the other fields in the header
777 if (ul_asc((u_long)arcn->sb.st_ino, hd->c_ino, sizeof(hd->c_ino),
779 ul_asc((u_long)arcn->sb.st_mode, hd->c_mode, sizeof(hd->c_mode),
781 ul_asc((u_long)arcn->sb.st_uid, hd->c_uid, sizeof(hd->c_uid),
783 ul_asc((u_long)arcn->sb.st_gid, hd->c_gid, sizeof(hd->c_gid),
785 ul_asc((u_long)arcn->sb.st_mtime, hd->c_mtime, sizeof(hd->c_mtime),
787 ul_asc((u_long)arcn->sb.st_nlink, hd->c_nlink, sizeof(hd->c_nlink),
789 ul_asc((u_long)MAJOR(arcn->sb.st_dev),hd->c_maj, sizeof(hd->c_maj),
791 ul_asc((u_long)MINOR(arcn->sb.st_dev),hd->c_min, sizeof(hd->c_min),
793 ul_asc((u_long)MAJOR(arcn->sb.st_rdev),hd->c_rmaj,sizeof(hd->c_maj),
795 ul_asc((u_long)MINOR(arcn->sb.st_rdev),hd->c_rmin,sizeof(hd->c_min),
797 ul_asc((u_long)nsz, hd->c_namesize, sizeof(hd->c_namesize), HEX))
801 * write the header, the file name and padding as required.
803 if ((wr_rdbuf((char *)&hdblk, (int)sizeof(HD_VCPIO)) < 0) ||
804 (wr_rdbuf(arcn->name, (int)nsz) < 0) ||
805 (wr_skip((off_t)(VCPIO_PAD(sizeof(HD_VCPIO) + nsz))) < 0)) {
806 paxwarn(1,"Could not write sv4cpio header for %s",arcn->org_name);
811 * if we have file data, tell the caller we are done, copy the file
813 if ((arcn->type == PAX_CTG) || (arcn->type == PAX_REG) ||
814 (arcn->type == PAX_HRG))
818 * if we are not a link, tell the caller we are done, go to next file
820 if (arcn->type != PAX_SLK)
824 * write the link name, tell the caller we are done.
826 if ((wr_rdbuf(arcn->ln_name, arcn->ln_nlen) < 0) ||
827 (wr_skip((off_t)(VCPIO_PAD(arcn->ln_nlen))) < 0)) {
828 paxwarn(1,"Could not write sv4cpio link name for %s",
836 * header field is out of range
838 paxwarn(1,"Sv4cpio header field is too small for file %s",arcn->org_name);
843 * Routines common to the old binary header cpio
848 * determine if a block given to us is an old binary cpio header
849 * (with/without header byte swapping)
851 * 0 if a valid header, -1 otherwise
855 bcpio_id(char *blk, int size)
857 if (size < (int)sizeof(HD_BCPIO))
861 * check both normal and byte swapped magic cookies
863 if (((u_short)SHRT_EXT(blk)) == MAGIC)
865 if (((u_short)RSHRT_EXT(blk)) == MAGIC) {
875 * determine if a buffer is an old binary archive entry. (It may have byte
876 * swapped header) convert and store the values in the ARCHD parameter.
877 * This is a very old header format and should not really be used.
879 * 0 if a valid header, -1 otherwise.
883 bcpio_rd(ARCHD *arcn, char *buf)
891 if (bcpio_id(buf, sizeof(HD_BCPIO)) < 0)
895 hd = (HD_BCPIO *)buf;
898 * header has swapped bytes on 16 bit boundaries
900 arcn->sb.st_dev = (dev_t)(RSHRT_EXT(hd->h_dev));
901 arcn->sb.st_ino = (ino_t)(RSHRT_EXT(hd->h_ino));
902 arcn->sb.st_mode = (mode_t)(RSHRT_EXT(hd->h_mode));
903 arcn->sb.st_uid = (uid_t)(RSHRT_EXT(hd->h_uid));
904 arcn->sb.st_gid = (gid_t)(RSHRT_EXT(hd->h_gid));
905 arcn->sb.st_nlink = (nlink_t)(RSHRT_EXT(hd->h_nlink));
906 arcn->sb.st_rdev = (dev_t)(RSHRT_EXT(hd->h_rdev));
907 arcn->sb.st_mtime = (time_t)(RSHRT_EXT(hd->h_mtime_1));
908 arcn->sb.st_mtime = (arcn->sb.st_mtime << 16) |
909 ((time_t)(RSHRT_EXT(hd->h_mtime_2)));
910 arcn->sb.st_size = (off_t)(RSHRT_EXT(hd->h_filesize_1));
911 arcn->sb.st_size = (arcn->sb.st_size << 16) |
912 ((off_t)(RSHRT_EXT(hd->h_filesize_2)));
913 nsz = (int)(RSHRT_EXT(hd->h_namesize));
915 arcn->sb.st_dev = (dev_t)(SHRT_EXT(hd->h_dev));
916 arcn->sb.st_ino = (ino_t)(SHRT_EXT(hd->h_ino));
917 arcn->sb.st_mode = (mode_t)(SHRT_EXT(hd->h_mode));
918 arcn->sb.st_uid = (uid_t)(SHRT_EXT(hd->h_uid));
919 arcn->sb.st_gid = (gid_t)(SHRT_EXT(hd->h_gid));
920 arcn->sb.st_nlink = (nlink_t)(SHRT_EXT(hd->h_nlink));
921 arcn->sb.st_rdev = (dev_t)(SHRT_EXT(hd->h_rdev));
922 arcn->sb.st_mtime = (time_t)(SHRT_EXT(hd->h_mtime_1));
923 arcn->sb.st_mtime = (arcn->sb.st_mtime << 16) |
924 ((time_t)(SHRT_EXT(hd->h_mtime_2)));
925 arcn->sb.st_size = (off_t)(SHRT_EXT(hd->h_filesize_1));
926 arcn->sb.st_size = (arcn->sb.st_size << 16) |
927 ((off_t)(SHRT_EXT(hd->h_filesize_2)));
928 nsz = (int)(SHRT_EXT(hd->h_namesize));
930 arcn->sb.st_ctime = arcn->sb.st_atime = arcn->sb.st_mtime;
933 * check the file name size, if bogus give up. otherwise read the file
938 arcn->nlen = nsz - 1;
939 if (rd_nm(arcn, nsz) < 0)
943 * header + file name are aligned to 2 byte boundaries, skip if needed
945 if (rd_skip((off_t)(BCPIO_PAD(sizeof(HD_BCPIO) + nsz))) < 0)
949 * if not a link (or a file with no data), calculate pad size (for
950 * padding which follows the file data), clear the link name and return
952 if (((arcn->sb.st_mode & C_IFMT) != C_ISLNK)||(arcn->sb.st_size == 0)){
954 * we have a valid header (not a link)
957 arcn->ln_name[0] = '\0';
958 arcn->pad = BCPIO_PAD(arcn->sb.st_size);
959 return(com_rd(arcn));
962 if ((rd_ln_nm(arcn) < 0) ||
963 (rd_skip((off_t)(BCPIO_PAD(arcn->sb.st_size))) < 0))
967 * we have a valid header (with a link)
969 return(com_rd(arcn));
974 * no cleanup needed here, just return size of the trailer (for append)
976 * size of trailer header in this format
982 return((off_t)(sizeof(HD_BCPIO) + sizeof(TRAILER) +
983 (BCPIO_PAD(sizeof(HD_BCPIO) + sizeof(TRAILER)))));
988 * copy the data in the ARCHD to buffer in old binary cpio format
989 * There is a real chance of field overflow with this critter. So we
990 * always check that the conversion is ok. nobody in their right mind
991 * should write an archive in this format...
993 * 0 if file has data to be written after the header, 1 if file has NO
994 * data to write after the header, -1 if archive write failed
998 bcpio_wr(ARCHD *arcn)
1008 * check and repair truncated device and inode fields in the cpio
1011 if (map_dev(arcn, (u_long)BCPIO_MASK, (u_long)BCPIO_MASK) < 0)
1014 if ((arcn->type != PAX_BLK) && (arcn->type != PAX_CHR))
1015 arcn->sb.st_rdev = 0;
1018 switch(arcn->type) {
1023 * caller will copy file data to the archive. tell him how
1026 arcn->pad = BCPIO_PAD(arcn->sb.st_size);
1027 hd->h_filesize_1[0] = CHR_WR_0(arcn->sb.st_size);
1028 hd->h_filesize_1[1] = CHR_WR_1(arcn->sb.st_size);
1029 hd->h_filesize_2[0] = CHR_WR_2(arcn->sb.st_size);
1030 hd->h_filesize_2[1] = CHR_WR_3(arcn->sb.st_size);
1031 t_offt = (off_t)(SHRT_EXT(hd->h_filesize_1));
1032 t_offt = (t_offt<<16) | ((off_t)(SHRT_EXT(hd->h_filesize_2)));
1033 if (arcn->sb.st_size != t_offt) {
1034 paxwarn(1,"File is too large for bcpio format %s",
1041 * no file data for the caller to process, the file data has
1042 * the size of the link
1045 hd->h_filesize_1[0] = CHR_WR_0(arcn->ln_nlen);
1046 hd->h_filesize_1[1] = CHR_WR_1(arcn->ln_nlen);
1047 hd->h_filesize_2[0] = CHR_WR_2(arcn->ln_nlen);
1048 hd->h_filesize_2[1] = CHR_WR_3(arcn->ln_nlen);
1049 t_int = (int)(SHRT_EXT(hd->h_filesize_1));
1050 t_int = (t_int << 16) | ((int)(SHRT_EXT(hd->h_filesize_2)));
1051 if (arcn->ln_nlen != t_int)
1056 * no file data for the caller to process
1059 hd->h_filesize_1[0] = (char)0;
1060 hd->h_filesize_1[1] = (char)0;
1061 hd->h_filesize_2[0] = (char)0;
1062 hd->h_filesize_2[1] = (char)0;
1067 * build up the rest of the fields
1069 hd->h_magic[0] = CHR_WR_2(MAGIC);
1070 hd->h_magic[1] = CHR_WR_3(MAGIC);
1071 hd->h_dev[0] = CHR_WR_2(arcn->sb.st_dev);
1072 hd->h_dev[1] = CHR_WR_3(arcn->sb.st_dev);
1073 if (arcn->sb.st_dev != (dev_t)(SHRT_EXT(hd->h_dev)))
1075 hd->h_ino[0] = CHR_WR_2(arcn->sb.st_ino);
1076 hd->h_ino[1] = CHR_WR_3(arcn->sb.st_ino);
1077 if (arcn->sb.st_ino != (ino_t)(SHRT_EXT(hd->h_ino)))
1079 hd->h_mode[0] = CHR_WR_2(arcn->sb.st_mode);
1080 hd->h_mode[1] = CHR_WR_3(arcn->sb.st_mode);
1081 if (arcn->sb.st_mode != (mode_t)(SHRT_EXT(hd->h_mode)))
1083 hd->h_uid[0] = CHR_WR_2(arcn->sb.st_uid);
1084 hd->h_uid[1] = CHR_WR_3(arcn->sb.st_uid);
1085 if (arcn->sb.st_uid != (uid_t)(SHRT_EXT(hd->h_uid)))
1087 hd->h_gid[0] = CHR_WR_2(arcn->sb.st_gid);
1088 hd->h_gid[1] = CHR_WR_3(arcn->sb.st_gid);
1089 if (arcn->sb.st_gid != (gid_t)(SHRT_EXT(hd->h_gid)))
1091 hd->h_nlink[0] = CHR_WR_2(arcn->sb.st_nlink);
1092 hd->h_nlink[1] = CHR_WR_3(arcn->sb.st_nlink);
1093 if (arcn->sb.st_nlink != (nlink_t)(SHRT_EXT(hd->h_nlink)))
1095 hd->h_rdev[0] = CHR_WR_2(arcn->sb.st_rdev);
1096 hd->h_rdev[1] = CHR_WR_3(arcn->sb.st_rdev);
1097 if (arcn->sb.st_rdev != (dev_t)(SHRT_EXT(hd->h_rdev)))
1099 hd->h_mtime_1[0] = CHR_WR_0(arcn->sb.st_mtime);
1100 hd->h_mtime_1[1] = CHR_WR_1(arcn->sb.st_mtime);
1101 hd->h_mtime_2[0] = CHR_WR_2(arcn->sb.st_mtime);
1102 hd->h_mtime_2[1] = CHR_WR_3(arcn->sb.st_mtime);
1103 t_timet = (time_t)(SHRT_EXT(hd->h_mtime_1));
1104 t_timet = (t_timet << 16) | ((time_t)(SHRT_EXT(hd->h_mtime_2)));
1105 if (arcn->sb.st_mtime != t_timet)
1107 nsz = arcn->nlen + 1;
1108 hd->h_namesize[0] = CHR_WR_2(nsz);
1109 hd->h_namesize[1] = CHR_WR_3(nsz);
1110 if (nsz != (int)(SHRT_EXT(hd->h_namesize)))
1114 * write the header, the file name and padding as required.
1116 if ((wr_rdbuf((char *)&hdblk, (int)sizeof(HD_BCPIO)) < 0) ||
1117 (wr_rdbuf(arcn->name, nsz) < 0) ||
1118 (wr_skip((off_t)(BCPIO_PAD(sizeof(HD_BCPIO) + nsz))) < 0)) {
1119 paxwarn(1, "Could not write bcpio header for %s", arcn->org_name);
1124 * if we have file data, tell the caller we are done
1126 if ((arcn->type == PAX_CTG) || (arcn->type == PAX_REG) ||
1127 (arcn->type == PAX_HRG))
1131 * if we are not a link, tell the caller we are done, go to next file
1133 if (arcn->type != PAX_SLK)
1137 * write the link name, tell the caller we are done.
1139 if ((wr_rdbuf(arcn->ln_name, arcn->ln_nlen) < 0) ||
1140 (wr_skip((off_t)(BCPIO_PAD(arcn->ln_nlen))) < 0)) {
1141 paxwarn(1,"Could not write bcpio link name for %s",arcn->org_name);
1148 * header field is out of range
1150 paxwarn(1,"Bcpio header field is too small for file %s", arcn->org_name);