200 romfs_strnlen(struct inode *i, unsigned long offset, unsigned long count)  in romfs_strnlen()  argument
206 	if (offset >= maxsize)  in romfs_strnlen()
210 	if (count > maxsize || offset+count > maxsize)  in romfs_strnlen()
211 		count = maxsize-offset;  in romfs_strnlen()
213 	bh = sb_bread(i->i_sb, offset>>ROMBSBITS);  in romfs_strnlen()
217 	avail = ROMBSIZE - (offset & ROMBMASK);  in romfs_strnlen()
219 	res = strnlen(((char *)bh->b_data)+(offset&ROMBMASK), maxsize);  in romfs_strnlen()
226 		offset += maxsize;  in romfs_strnlen()
228 		bh = sb_bread(i->i_sb, offset>>ROMBSBITS);  in romfs_strnlen()
242 romfs_copyfrom(struct inode *i, void *dest, unsigned long offset, unsigned long count)  in romfs_copyfrom()  argument
248 	if (offset >= maxsize || count > maxsize || offset+count>maxsize)  in romfs_copyfrom()
251 	bh = sb_bread(i->i_sb, offset>>ROMBSBITS);  in romfs_copyfrom()
255 	avail = ROMBSIZE - (offset & ROMBMASK);  in romfs_copyfrom()
257 	memcpy(dest, ((char *)bh->b_data) + (offset & ROMBMASK), maxsize);  in romfs_copyfrom()
263 		offset += maxsize;  in romfs_copyfrom()
266 		bh = sb_bread(i->i_sb, offset>>ROMBSBITS);  in romfs_copyfrom()
286 	unsigned long offset, maxoff;  in romfs_readdir()  local
295 	offset = filp->f_pos;  in romfs_readdir()
296 	if (!offset) {  in romfs_readdir()
297 		offset = i->i_ino & ROMFH_MASK;  in romfs_readdir()
298 		if (romfs_copyfrom(i, &ri, offset, ROMFH_SIZE) <= 0)  in romfs_readdir()
300 		offset = be32_to_cpu(ri.spec) & ROMFH_MASK;  in romfs_readdir()
305 		if (!offset || offset >= maxoff) {  in romfs_readdir()
306 			offset = maxoff;  in romfs_readdir()
307 			filp->f_pos = offset;  in romfs_readdir()
310 		filp->f_pos = offset;  in romfs_readdir()
313 		if (romfs_copyfrom(i, &ri, offset, ROMFH_SIZE) <= 0)  in romfs_readdir()
316 		j = romfs_strnlen(i, offset+ROMFH_SIZE, sizeof(fsname)-1);  in romfs_readdir()
321 		romfs_copyfrom(i, fsname, offset+ROMFH_SIZE, j);  in romfs_readdir()
323 		ino = offset;  in romfs_readdir()
327 		if (filldir(dirent, fsname, j, offset, ino,  in romfs_readdir()
332 		offset = nextfh & ROMFH_MASK;  in romfs_readdir()
342 	unsigned long offset, maxoff;  in romfs_lookup()  local
352 	offset = dir->i_ino & ROMFH_MASK;  in romfs_lookup()
354 	if (romfs_copyfrom(dir, &ri, offset, ROMFH_SIZE) <= 0)  in romfs_lookup()
358 	offset = be32_to_cpu(ri.spec) & ROMFH_MASK;  in romfs_lookup()
367 		if (!offset || offset >= maxoff)  in romfs_lookup()
369 		if (romfs_copyfrom(dir, &ri, offset, ROMFH_SIZE) <= 0)  in romfs_lookup()
373 		fslen = romfs_strnlen(dir, offset+ROMFH_SIZE, ROMFH_SIZE);  in romfs_lookup()
377 				romfs_copyfrom(dir, fsname, offset+ROMFH_SIZE, len+1);  in romfs_lookup()
383 			fslen = romfs_strnlen(dir, offset+ROMFH_SIZE, sizeof(fsname)-1);  in romfs_lookup()
385 				romfs_copyfrom(dir, fsname, offset+ROMFH_SIZE, len+1);  in romfs_lookup()
391 		offset = be32_to_cpu(ri.next) & ROMFH_MASK;  in romfs_lookup()
396 		offset = be32_to_cpu(ri.spec) & ROMFH_MASK;  in romfs_lookup()
398 	inode = romfs_iget(dir->i_sb, offset);  in romfs_lookup()
421 	loff_t offset, size;  in romfs_readpage()  local
433 	offset = page_offset(page);  in romfs_readpage()
437 	if (offset < size) {  in romfs_readpage()
440 		size -= offset;  in romfs_readpage()
443 		filled = romfs_copyfrom(inode, buf, ROMFS_I(inode)->i_dataoffset+offset, readlen);  in romfs_readpage()