16 static void adfs_f_free(struct adfs_dir *dir);
85 adfs_dir_checkbyte(const struct adfs_dir *dir)  in adfs_dir_checkbyte()  argument
87 	struct buffer_head * const *bh = dir->bh;  in adfs_dir_checkbyte()
88 	const int blocksize_bits = dir->sb->s_blocksize_bits;  in adfs_dir_checkbyte()
144 	      unsigned int size, struct adfs_dir *dir)  in adfs_dir_read()  argument
158 	dir->nr_buffers = 0;  in adfs_dir_read()
159 	dir->sb = sb;  in adfs_dir_read()
171 		dir->bh[blk] = sb_bread(sb, phys);  in adfs_dir_read()
172 		if (!dir->bh[blk])  in adfs_dir_read()
176 	memcpy(&dir->dirhead, bufoff(dir->bh, 0), sizeof(dir->dirhead));  in adfs_dir_read()
177 	memcpy(&dir->dirtail, bufoff(dir->bh, 2007), sizeof(dir->dirtail));  in adfs_dir_read()
179 	if (dir->dirhead.startmasseq != dir->dirtail.new.endmasseq ||  in adfs_dir_read()
180 	    memcmp(&dir->dirhead.startname, &dir->dirtail.new.endname, 4))  in adfs_dir_read()
183 	if (memcmp(&dir->dirhead.startname, "Nick", 4) &&  in adfs_dir_read()
184 	    memcmp(&dir->dirhead.startname, "Hugo", 4))  in adfs_dir_read()
187 	if (adfs_dir_checkbyte(dir) != dir->dirtail.new.dircheckbyte)  in adfs_dir_read()
190 	dir->nr_buffers = blk;  in adfs_dir_read()
199 		brelse(dir->bh[blk]);  in adfs_dir_read()
201 	dir->sb = NULL;  in adfs_dir_read()
210 adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,  in adfs_dir2obj()  argument
230 		if (ADFS_SB(dir->sb)->s_ftsuffix)  in adfs_dir2obj()
256 __adfs_dir_get(struct adfs_dir *dir, int pos, struct object_info *obj)  in __adfs_dir_get()  argument
258 	struct super_block *sb = dir->sb;  in __adfs_dir_get()
264 	if (buffer > dir->nr_buffers)  in __adfs_dir_get()
272 	memcpy(&de, dir->bh[buffer]->b_data + offset, thissize);  in __adfs_dir_get()
274 		memcpy(((char *)&de) + thissize, dir->bh[buffer + 1]->b_data,  in __adfs_dir_get()
280 	adfs_dir2obj(dir, obj, &de);  in __adfs_dir_get()
286 __adfs_dir_put(struct adfs_dir *dir, int pos, struct object_info *obj)  in __adfs_dir_put()  argument
288 	struct super_block *sb = dir->sb;  in __adfs_dir_put()
294 	if (buffer > dir->nr_buffers)  in __adfs_dir_put()
305 	memcpy(&de, dir->bh[buffer]->b_data + offset, thissize);  in __adfs_dir_put()
307 		memcpy(((char *)&de) + thissize, dir->bh[buffer + 1]->b_data,  in __adfs_dir_put()
318 	memcpy(dir->bh[buffer]->b_data + offset, &de, thissize);  in __adfs_dir_put()
320 		memcpy(dir->bh[buffer + 1]->b_data, ((char *)&de) + thissize,  in __adfs_dir_put()
331 adfs_dir_find_entry(struct adfs_dir *dir, unsigned long object_id)  in adfs_dir_find_entry()  argument
340 		if (!__adfs_dir_get(dir, pos, &obj))  in adfs_dir_find_entry()
353 adfs_f_read(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir)  in adfs_f_read()  argument
360 	ret = adfs_dir_read(sb, id, sz, dir);  in adfs_f_read()
364 		dir->parent_id = adfs_readval(dir->dirtail.new.dirparent, 3);  in adfs_f_read()
370 adfs_f_setpos(struct adfs_dir *dir, unsigned int fpos)  in adfs_f_setpos()  argument
375 	dir->pos = 5 + fpos * 26;  in adfs_f_setpos()
380 adfs_f_getnext(struct adfs_dir *dir, struct object_info *obj)  in adfs_f_getnext()  argument
384 	ret = __adfs_dir_get(dir, dir->pos, obj);  in adfs_f_getnext()
386 		dir->pos += 26;  in adfs_f_getnext()
392 adfs_f_update(struct adfs_dir *dir, struct object_info *obj)  in adfs_f_update()  argument
394 	struct super_block *sb = dir->sb;  in adfs_f_update()
397 	ret = adfs_dir_find_entry(dir, obj->file_id);  in adfs_f_update()
399 		adfs_error(dir->sb, "unable to locate entry to update");  in adfs_f_update()
403 	__adfs_dir_put(dir, ret, obj);  in adfs_f_update()
408 	dir->bh[0]->b_data[0] += 1;  in adfs_f_update()
409 	dir->bh[dir->nr_buffers - 1]->b_data[sb->s_blocksize - 6] += 1;  in adfs_f_update()
411 	ret = adfs_dir_checkbyte(dir);  in adfs_f_update()
415 	dir->bh[dir->nr_buffers - 1]->b_data[sb->s_blocksize - 1] = ret;  in adfs_f_update()
421 	memcpy(&dir->dirhead, bufoff(dir->bh, 0), sizeof(dir->dirhead));  in adfs_f_update()
422 	memcpy(&dir->dirtail, bufoff(dir->bh, 2007), sizeof(dir->dirtail));  in adfs_f_update()
424 	if (dir->dirhead.startmasseq != dir->dirtail.new.endmasseq ||  in adfs_f_update()
425 	    memcmp(&dir->dirhead.startname, &dir->dirtail.new.endname, 4))  in adfs_f_update()
428 	if (memcmp(&dir->dirhead.startname, "Nick", 4) &&  in adfs_f_update()
429 	    memcmp(&dir->dirhead.startname, "Hugo", 4))  in adfs_f_update()
432 	if (adfs_dir_checkbyte(dir) != dir->dirtail.new.dircheckbyte)  in adfs_f_update()
436 	for (i = dir->nr_buffers - 1; i >= 0; i--)  in adfs_f_update()
437 		mark_buffer_dirty(dir->bh[i]);  in adfs_f_update()
444 	adfs_error(dir->sb, "whoops!  I broke a directory!");  in adfs_f_update()
450 adfs_f_sync(struct adfs_dir *dir)  in adfs_f_sync()  argument
455 	for (i = dir->nr_buffers - 1; i >= 0; i--) {  in adfs_f_sync()
456 		struct buffer_head *bh = dir->bh[i];  in adfs_f_sync()
466 adfs_f_free(struct adfs_dir *dir)  in adfs_f_free()  argument
470 	for (i = dir->nr_buffers - 1; i >= 0; i--) {  in adfs_f_free()
471 		brelse(dir->bh[i]);  in adfs_f_free()
472 		dir->bh[i] = NULL;  in adfs_f_free()
475 	dir->nr_buffers = 0;  in adfs_f_free()
476 	dir->sb = NULL;  in adfs_f_free()