77 static 	ino_t	find(fileid_t *filep, char *path);
78 static	ino_t	dlook(fileid_t *filep, char *path);
79 static 	daddr32_t	sbmap(fileid_t *filep, daddr32_t bn);
97 openi(fileid_t *filep, ino_t inode)  in openi()  argument
100 	devid_t *devp = filep->fi_devp;  in openi()
102 	filep->fi_inode = get_cache((int)inode);  in openi()
103 	if (filep->fi_inode != 0)  in openi()
106 	filep->fi_offset = 0;  in openi()
107 	filep->fi_blocknum = fsbtodb(&devp->un_fs.di_fs,  in openi()
111 	filep->fi_count = devp->un_fs.di_fs.fs_bsize;  in openi()
112 	filep->fi_memp = 0;		/* cached read */  in openi()
113 	if (diskread(filep) != 0) {  in openi()
117 	dp = (struct dinode *)filep->fi_memp;  in openi()
118 	filep->fi_inode = (struct inode *)  in openi()
120 	bzero((char *)filep->fi_inode, sizeof (struct inode));  in openi()
121 	filep->fi_inode->i_ic =  in openi()
123 	filep->fi_inode->i_number = inode;  in openi()
124 	set_cache((int)inode, (void *)filep->fi_inode, sizeof (struct inode));  in openi()
131 	fileid_t *filep = head;  in find_fp()  local
134 		while ((filep = filep->fi_forw) != head)  in find_fp()
135 			if (fd == filep->fi_filedes)  in find_fp()
136 				return (filep->fi_taken ? filep : 0);  in find_fp()
143 find(fileid_t *filep, char *path)  in find()  argument
162 	devp = filep->fi_devp;  in find()
166 		if (r && openi(filep, (ino_t)UFSROOTINO))  in find()
179 		if ((inode = dlook(filep, lpathp)) != 0) {  in find()
180 			if (openi(filep, inode))  in find()
182 			if ((filep->fi_inode->i_smode & IFMT) == IFLNK) {  in find()
183 				filep->fi_blocknum =  in find()
185 				    filep->fi_inode->i_db[0]);  in find()
186 				filep->fi_count = DEV_BSIZE;  in find()
187 				filep->fi_memp = 0;  in find()
188 				if (diskread(filep) != 0)  in find()
190 				len = strlen(filep->fi_memp);  in find()
191 				if (filep->fi_memp[0] == '/')  in find()
199 				bcopy(filep->fi_memp, lpathp, len);  in find()
216 sbmap(fileid_t *filep, daddr32_t bn)  in sbmap()  argument
224 	devp = filep->fi_devp;  in sbmap()
225 	inodep = filep->fi_inode;  in sbmap()
264 		filep->fi_blocknum = fsbtodb(&devp->un_fs.di_fs, nb);  in sbmap()
265 		filep->fi_count = devp->un_fs.di_fs.fs_bsize;  in sbmap()
266 		filep->fi_memp = 0;  in sbmap()
267 		if (diskread(filep) != 0)  in sbmap()
269 		bap = (daddr32_t *)filep->fi_memp;  in sbmap()
281 dlook(fileid_t *filep, char *path)  in dlook()  argument
288 	ip = filep->fi_inode;  in dlook()
302 	dirp.fi = filep;  in dlook()
323 	fileid_t *filep;  in readdir()  local
328 	filep = dstuff->fi;  in readdir()
329 	devp = filep->fi_devp;  in readdir()
331 		if (dstuff->loc >= filep->fi_inode->i_size) {  in readdir()
338 			d = sbmap(filep, lbn);  in readdir()
343 			filep->fi_blocknum = fsbtodb(&devp->un_fs.di_fs, d);  in readdir()
344 			filep->fi_count =  in readdir()
345 			    blksize(&devp->un_fs.di_fs, filep->fi_inode, lbn);  in readdir()
346 			filep->fi_memp = 0;  in readdir()
347 			if (diskread(filep) != 0) {  in readdir()
351 		dp = (struct direct *)(filep->fi_memp + off);  in readdir()
365 getblock(fileid_t *filep, caddr_t buf, int count, int *rcount)  in getblock()  argument
375 	devp = filep->fi_devp;  in getblock()
376 	p = filep->fi_memp;  in getblock()
377 	if ((signed)filep->fi_count <= 0) {  in getblock()
380 		diff = filep->fi_inode->i_size - filep->fi_offset;  in getblock()
388 		lbn = lblkno(fs, filep->fi_offset);  in getblock()
391 		filep->fi_blocknum = fsbtodb(fs, sbmap(filep, lbn));  in getblock()
393 		off = blkoff(fs, filep->fi_offset);  in getblock()
396 		size = blksize(fs, filep->fi_inode, lbn);  in getblock()
397 		filep->fi_count = size;  in getblock()
398 		filep->fi_memp = filep->fi_buf;  in getblock()
406 			filep->fi_memp = buf;  in getblock()
407 			if (diskread(filep)) {  in getblock()
411 			filep->fi_count = 0;  in getblock()
413 		} else if (diskread(filep))  in getblock()
416 		if (filep->fi_offset - off + size >= filep->fi_inode->i_size)  in getblock()
417 			filep->fi_count = diff + off;  in getblock()
418 		filep->fi_count -= off;  in getblock()
419 		p = &filep->fi_memp[off];  in getblock()
421 	filep->fi_memp = p;  in getblock()
430 getblock_noopt(fileid_t *filep)  in getblock_noopt()  argument
440 	devp = filep->fi_devp;  in getblock_noopt()
441 	p = filep->fi_memp;  in getblock_noopt()
442 	if ((signed)filep->fi_count <= 0) {  in getblock_noopt()
445 		diff = filep->fi_inode->i_size - filep->fi_offset;  in getblock_noopt()
453 		lbn = lblkno(fs, filep->fi_offset);  in getblock_noopt()
456 		filep->fi_blocknum = fsbtodb(fs, sbmap(filep, lbn));  in getblock_noopt()
458 		off = blkoff(fs, filep->fi_offset);  in getblock_noopt()
461 		size = blksize(fs, filep->fi_inode, lbn);  in getblock_noopt()
462 		filep->fi_count = size;  in getblock_noopt()
464 		filep->fi_memp = NULL;  in getblock_noopt()
466 		if (diskread(filep))  in getblock_noopt()
469 		if (filep->fi_offset - off + size >= filep->fi_inode->i_size)  in getblock_noopt()
470 			filep->fi_count = diff + off;  in getblock_noopt()
471 		filep->fi_count -= off;  in getblock_noopt()
472 		p = &filep->fi_memp[off];  in getblock_noopt()
474 	filep->fi_memp = p;  in getblock_noopt()
494 	fileid_t *filep;  in bufs_read()  local
496 	if (!(filep = find_fp(fd))) {  in bufs_read()
500 	if ((filep->fi_flags & FI_COMPRESSED) == 0 &&  in bufs_read()
501 	    filep->fi_offset + count > filep->fi_inode->i_size)  in bufs_read()
502 		count = filep->fi_inode->i_size - filep->fi_offset;  in bufs_read()
510 		if (filep->fi_flags & FI_COMPRESSED) {  in bufs_read()
511 			if ((j = cf_read(filep, buf, count)) < 0)  in bufs_read()
517 			if ((j = filep->fi_count) == 0) {  in bufs_read()
518 				(void) getblock(filep, buf, i, &rcount);  in bufs_read()
521 				filep->fi_offset += rcount;  in bufs_read()
526 				bcopy(filep->fi_memp, buf, (unsigned)j);  in bufs_read()
530 		filep->fi_memp += j;  in bufs_read()
531 		filep->fi_offset += j;  in bufs_read()
532 		filep->fi_count -= j;  in bufs_read()
613 	fileid_t	*filep;  in bufs_open()  local
620 	filep = (fileid_t *)bkmem_alloc(sizeof (fileid_t));  in bufs_open()
621 	filep->fi_back = head->fi_back;  in bufs_open()
622 	filep->fi_forw = head;  in bufs_open()
623 	head->fi_back->fi_forw = filep;  in bufs_open()
624 	head->fi_back = filep;  in bufs_open()
625 	filep->fi_filedes = filedes++;  in bufs_open()
626 	filep->fi_taken = 1;  in bufs_open()
627 	filep->fi_path = (char *)bkmem_alloc(strlen(filename) + 1);  in bufs_open()
628 	(void) strcpy(filep->fi_path, filename);  in bufs_open()
629 	filep->fi_devp = ufs_devp; /* dev is already "mounted" */  in bufs_open()
630 	filep->fi_inode = NULL;  in bufs_open()
631 	bzero(filep->fi_buf, MAXBSIZE);  in bufs_open()
632 	filep->fi_getblock = getblock_noopt;  in bufs_open()
633 	filep->fi_flags = 0;  in bufs_open()
635 	inode = find(filep, (char *)filename);  in bufs_open()
638 		(void) bufs_close(filep->fi_filedes);  in bufs_open()
641 	if (openi(filep, inode)) {  in bufs_open()
643 		(void) bufs_close(filep->fi_filedes);  in bufs_open()
647 	filep->fi_offset = filep->fi_count = 0;  in bufs_open()
649 	if (cf_check_compressed(filep) != 0)  in bufs_open()
651 	return (filep->fi_filedes);  in bufs_open()
662 	fileid_t *filep;  in bufs_lseek()  local
665 	if (!(filep = find_fp(fd)))  in bufs_lseek()
668 	if (filep->fi_flags & FI_COMPRESSED) {  in bufs_lseek()
669 		cf_seek(filep, addr, whence);  in bufs_lseek()
673 			filep->fi_offset += addr;  in bufs_lseek()
676 			filep->fi_offset = addr;  in bufs_lseek()
683 		filep->fi_blocknum = addr / DEV_BSIZE;  in bufs_lseek()
686 	filep->fi_count = 0;  in bufs_lseek()
695 	fileid_t	*filep;  in bufs_fstat()  local
698 	if (!(filep = find_fp(fd)))  in bufs_fstat()
701 	ip = filep->fi_inode;  in bufs_fstat()
739 	fileid_t *filep;  in bufs_close()  local
742 	if (!(filep = find_fp(fd)))  in bufs_close()
745 	if (filep->fi_taken && (filep != head)) {  in bufs_close()
747 		bkmem_free(filep->fi_path, strlen(filep->fi_path)+1);  in bufs_close()
748 		filep->fi_blocknum = filep->fi_count = filep->fi_offset = 0;  in bufs_close()
749 		filep->fi_memp = (caddr_t)0;  in bufs_close()
750 		filep->fi_devp = 0;  in bufs_close()
751 		filep->fi_taken = 0;  in bufs_close()
754 		filep->fi_forw->fi_back = filep->fi_back;  in bufs_close()
755 		filep->fi_back->fi_forw = filep->fi_forw;  in bufs_close()
756 		cf_close(filep);  in bufs_close()
757 		bkmem_free((char *)filep, sizeof (fileid_t));  in bufs_close()
771 	fileid_t *filep = head;  in bufs_closeall()  local
773 	while ((filep = filep->fi_forw) != head)  in bufs_closeall()
774 		if (filep->fi_taken)  in bufs_closeall()
775 			if (bufs_close(filep->fi_filedes))  in bufs_closeall()