fs/adfs/dir_f.c

70 adfs_dir_checkbyte(const struct adfs_dir *dir)
72 	struct buffer_head * const *bh = dir->bh;
73 	const int blocksize_bits = dir->sb->s_blocksize_bits;
124 static int adfs_f_validate(struct adfs_dir *dir)
126 	struct adfs_dirheader *head = dir->dirhead;
127 	struct adfs_newdirtail *tail = dir->newtail;
134 	    adfs_dir_checkbyte(dir) != tail->dircheckbyte)
142 		       struct adfs_dir *dir)
150 	ret = adfs_dir_read_buffers(sb, indaddr, ADFS_NEWDIR_SIZE, dir);
154 	dir->dirhead = bufoff(dir->bh, 0);
155 	dir->newtail = bufoff(dir->bh, 2007);
157 	if (adfs_f_validate(dir))
160 	dir->parent_id = adfs_readval(dir->newtail->dirparent, 3);
165 	adfs_error(sb, "dir %06x is corrupted", indaddr);
166 	adfs_dir_relse(dir);
175 adfs_dir2obj(struct adfs_dir *dir, struct object_info *obj,
194 	adfs_object_fixup(dir, obj);
215 __adfs_dir_get(struct adfs_dir *dir, int pos, struct object_info *obj)
220 	ret = adfs_dir_copyfrom(&de, dir, pos, 26);
227 	adfs_dir2obj(dir, obj, &de);
233 adfs_f_setpos(struct adfs_dir *dir, unsigned int fpos)
238 	dir->pos = 5 + fpos * 26;
243 adfs_f_getnext(struct adfs_dir *dir, struct object_info *obj)
247 	ret = __adfs_dir_get(dir, dir->pos, obj);
249 		dir->pos += 26;
254 static int adfs_f_iterate(struct adfs_dir *dir, struct dir_context *ctx)
260 		if (__adfs_dir_get(dir, pos, &obj))
271 static int adfs_f_update(struct adfs_dir *dir, struct object_info *obj)
280 		ret = adfs_dir_copyfrom(&de, dir, offset, sizeof(de));
282 			adfs_error(dir->sb, "error reading directory entry");
286 			adfs_error(dir->sb, "unable to locate entry to update");
295 	return adfs_dir_copyto(dir, offset, &de, 26);
298 static int adfs_f_commit(struct adfs_dir *dir)
303 	dir->dirhead->startmasseq += 1;
304 	dir->newtail->endmasseq += 1;
307 	dir->newtail->dircheckbyte = adfs_dir_checkbyte(dir);
310 	ret = adfs_f_validate(dir);
312 		adfs_msg(dir->sb, KERN_ERR, "error: update broke directory");