24 static void adfs_f_free(struct adfs_dir *dir);
94 adfs_dir_checkbyte(const struct adfs_dir *dir)  in adfs_dir_checkbyte()  argument
96 	struct buffer_head * const *bh = dir->bh;  in adfs_dir_checkbyte()
97 	const int blocksize_bits = dir->sb->s_blocksize_bits;  in adfs_dir_checkbyte()
153 	      unsigned int size, struct adfs_dir *dir)  in adfs_dir_read()  argument
167 	dir->nr_buffers = 0;  in adfs_dir_read()
168 	dir->sb = sb;  in adfs_dir_read()
180 		dir->bh[blk] = sb_bread(sb, phys);  in adfs_dir_read()
181 		if (!dir->bh[blk])  in adfs_dir_read()
185 	memcpy(&dir->dirhead, bufoff(dir->bh, 0), sizeof(dir->dirhead));  in adfs_dir_read()
186 	memcpy(&dir->dirtail, bufoff(dir->bh, 2007), sizeof(dir->dirtail));  in adfs_dir_read()
188 	if (dir->dirhead.startmasseq != dir->dirtail.new.endmasseq ||  in adfs_dir_read()
189 	    memcmp(&dir->dirhead.startname, &dir->dirtail.new.endname, 4))  in adfs_dir_read()
192 	if (memcmp(&dir->dirhead.startname, "Nick", 4) &&  in adfs_dir_read()
193 	    memcmp(&dir->dirhead.startname, "Hugo", 4))  in adfs_dir_read()
196 	if (adfs_dir_checkbyte(dir) != dir->dirtail.new.dircheckbyte)  in adfs_dir_read()
199 	dir->nr_buffers = blk;  in adfs_dir_read()
208 		brelse(dir->bh[blk]);  in adfs_dir_read()
210 	dir->sb = NULL;  in adfs_dir_read()
247 __adfs_dir_get(struct adfs_dir *dir, int pos, struct object_info *obj)  in __adfs_dir_get()  argument
249 	struct super_block *sb = dir->sb;  in __adfs_dir_get()
255 	if (buffer > dir->nr_buffers)  in __adfs_dir_get()
263 	memcpy(&de, dir->bh[buffer]->b_data + offset, thissize);  in __adfs_dir_get()
265 		memcpy(((char *)&de) + thissize, dir->bh[buffer + 1]->b_data,  in __adfs_dir_get()
277 __adfs_dir_put(struct adfs_dir *dir, int pos, struct object_info *obj)  in __adfs_dir_put()  argument
279 	struct super_block *sb = dir->sb;  in __adfs_dir_put()
285 	if (buffer > dir->nr_buffers)  in __adfs_dir_put()
296 	memcpy(&de, dir->bh[buffer]->b_data + offset, thissize);  in __adfs_dir_put()
298 		memcpy(((char *)&de) + thissize, dir->bh[buffer + 1]->b_data,  in __adfs_dir_put()
309 	memcpy(dir->bh[buffer]->b_data + offset, &de, thissize);  in __adfs_dir_put()
311 		memcpy(dir->bh[buffer + 1]->b_data, ((char *)&de) + thissize,  in __adfs_dir_put()
322 adfs_dir_find_entry(struct adfs_dir *dir, unsigned long object_id)  in adfs_dir_find_entry()  argument
331 		if (!__adfs_dir_get(dir, pos, &obj))  in adfs_dir_find_entry()
344 adfs_f_read(struct super_block *sb, unsigned int id, unsigned int sz, struct adfs_dir *dir)  in adfs_f_read()  argument
351 	ret = adfs_dir_read(sb, id, sz, dir);  in adfs_f_read()
355 		dir->parent_id = adfs_readval(dir->dirtail.new.dirparent, 3);  in adfs_f_read()
361 adfs_f_setpos(struct adfs_dir *dir, unsigned int fpos)  in adfs_f_setpos()  argument
366 	dir->pos = 5 + fpos * 26;  in adfs_f_setpos()
371 adfs_f_getnext(struct adfs_dir *dir, struct object_info *obj)  in adfs_f_getnext()  argument
375 	ret = __adfs_dir_get(dir, dir->pos, obj);  in adfs_f_getnext()
377 		dir->pos += 26;  in adfs_f_getnext()
383 adfs_f_update(struct adfs_dir *dir, struct object_info *obj)  in adfs_f_update()  argument
385 	struct super_block *sb = dir->sb;  in adfs_f_update()
388 	ret = adfs_dir_find_entry(dir, obj->file_id);  in adfs_f_update()
390 		adfs_error(dir->sb, "unable to locate entry to update");  in adfs_f_update()
394 	__adfs_dir_put(dir, ret, obj);  in adfs_f_update()
399 	dir->bh[0]->b_data[0] += 1;  in adfs_f_update()
400 	dir->bh[dir->nr_buffers - 1]->b_data[sb->s_blocksize - 6] += 1;  in adfs_f_update()
402 	ret = adfs_dir_checkbyte(dir);  in adfs_f_update()
406 	dir->bh[dir->nr_buffers - 1]->b_data[sb->s_blocksize - 1] = ret;  in adfs_f_update()
412 	memcpy(&dir->dirhead, bufoff(dir->bh, 0), sizeof(dir->dirhead));  in adfs_f_update()
413 	memcpy(&dir->dirtail, bufoff(dir->bh, 2007), sizeof(dir->dirtail));  in adfs_f_update()
415 	if (dir->dirhead.startmasseq != dir->dirtail.new.endmasseq ||  in adfs_f_update()
416 	    memcmp(&dir->dirhead.startname, &dir->dirtail.new.endname, 4))  in adfs_f_update()
419 	if (memcmp(&dir->dirhead.startname, "Nick", 4) &&  in adfs_f_update()
420 	    memcmp(&dir->dirhead.startname, "Hugo", 4))  in adfs_f_update()
423 	if (adfs_dir_checkbyte(dir) != dir->dirtail.new.dircheckbyte)  in adfs_f_update()
427 	for (i = dir->nr_buffers - 1; i >= 0; i--)  in adfs_f_update()
428 		mark_buffer_dirty(dir->bh[i]);  in adfs_f_update()
435 	adfs_error(dir->sb, "whoops!  I broke a directory!");  in adfs_f_update()
441 adfs_f_free(struct adfs_dir *dir)  in adfs_f_free()  argument
445 	for (i = dir->nr_buffers - 1; i >= 0; i--) {  in adfs_f_free()
446 		brelse(dir->bh[i]);  in adfs_f_free()
447 		dir->bh[i] = NULL;  in adfs_f_free()
450 	dir->nr_buffers = 0;  in adfs_f_free()
451 	dir->sb = NULL;  in adfs_f_free()