bin/pax/buf_subs.c

55 #define MINFBSZ		512		/* default block size for hole detect */
60  * limit on blocking size is removed (though that will violate pax spec)
67 int blksz = MAXBLK;			/* block input/output size in bytes */
68 int wrblksz;				/* user spec output size in bytes */
79  *	0 if ok, -1 if the user specified write block size violates pax spec
87 	 * Check to make sure the write block size meets pax specs. If the user
96 		paxwarn(1, "Write block size of %d too large, maximum is: %d",
101 		paxwarn(1, "Write block size of %d is not a %d byte multiple",
106 		paxwarn(0, "Write block size of %d larger than POSIX max %d, archive may not be portable",
135 	 * going to append and user specified a write block size, check it
141 			paxwarn(1,"Write block size %d too large, maximum is: %d",
146 			paxwarn(1, "Write block size %d is not a %d byte multiple",
187  *	back several records (the number depends on the size of the archive
188  *	record and the size of the format trailer) to read up the record where
218 	 * if the user did not specify a write blocksize, inherit the size used
255 		 * determination of the physical block size, we will fail.
607 	off_t size = arcn->sb.st_size;
613 	while (size > 0L) {
616 			*left = size;
619 		cnt = MIN(cnt, size);
622 		size -= res;
632 	else if (size != 0L)
633 		paxwarn(1, "File changed size during read %s", arcn->org_name);
639 	*left = size;
667 	off_t size = arcn->sb.st_size;
678 	 * if the size is zero, use the default MINFBSZ
684 		syswarn(0,errno,"Unable to obtain block size for file %s",fnm);
693 	while (size > 0L) {
702 		cnt = MIN(cnt, size);
704 			*left = size;
717 		size -= res;
732 	if ((size > 0L) && (*left == 0L))
739 	if (docrc && (size == 0L) && (arcn->crc != crc))
773 	 * if the size is zero, use the default MINFBSZ
779 		syswarn(0,errno,"Unable to obtain block size for file %s",fnm);
804 		paxwarn(1, "File %s changed size during copy to %s",
875  *	the record size might change. (either larger or smaller).
903 		 * The new archive volume might have changed the size of the
909 		 * if the block size has shrunk from a volume change.
973 		 * size. if so, figure out if we have too much or too little
974 		 * data for using the new block size