2  * blknum.c --- Functions to handle blk64_t and high/low 64-bit block
8  * %Begin-Header%
11  * %End-Header%
20 dgrp_t ext2fs_group_of_blk2(ext2_filsys fs, blk64_t blk)  in ext2fs_group_of_blk2()  argument
22 	return (blk - fs->super->s_first_data_block) /  in ext2fs_group_of_blk2()
23 		fs->super->s_blocks_per_group;  in ext2fs_group_of_blk2()
29 blk64_t ext2fs_group_first_block2(ext2_filsys fs, dgrp_t group)  in ext2fs_group_first_block2()  argument
31 	return fs->super->s_first_data_block +  in ext2fs_group_first_block2()
32 		EXT2_GROUPS_TO_BLOCKS(fs->super, group);  in ext2fs_group_first_block2()
38 blk64_t ext2fs_group_last_block2(ext2_filsys fs, dgrp_t group)  in ext2fs_group_last_block2()  argument
40 	return (group == fs->group_desc_count - 1 ?  in ext2fs_group_last_block2()
41 		ext2fs_blocks_count(fs->super) - 1 :  in ext2fs_group_last_block2()
42 		ext2fs_group_first_block2(fs, group) +  in ext2fs_group_last_block2()
43 			(fs->super->s_blocks_per_group - 1));  in ext2fs_group_last_block2()
49 int ext2fs_group_blocks_count(ext2_filsys fs, dgrp_t group)  in ext2fs_group_blocks_count()  argument
53 	if (group == fs->group_desc_count - 1) {  in ext2fs_group_blocks_count()
54 		num_blocks = (ext2fs_blocks_count(fs->super) -  in ext2fs_group_blocks_count()
55 				fs->super->s_first_data_block) %  in ext2fs_group_blocks_count()
56 			      fs->super->s_blocks_per_group;  in ext2fs_group_blocks_count()
58 			num_blocks = fs->super->s_blocks_per_group;  in ext2fs_group_blocks_count()
60 		num_blocks = fs->super->s_blocks_per_group;  in ext2fs_group_blocks_count()
68 blk64_t ext2fs_inode_data_blocks2(ext2_filsys fs,  in ext2fs_inode_data_blocks2()  argument
71 	return (inode->i_blocks |  in ext2fs_inode_data_blocks2()
72 		(ext2fs_has_feature_huge_file(fs->super) ?  in ext2fs_inode_data_blocks2()
73 		 (__u64) inode->osd2.linux2.l_i_blocks_hi << 32 : 0)) -  in ext2fs_inode_data_blocks2()
74 		(inode->i_file_acl ? EXT2_CLUSTER_SIZE(fs->super) >> 9 : 0);  in ext2fs_inode_data_blocks2()
80 blk64_t ext2fs_inode_i_blocks(ext2_filsys fs,  in ext2fs_inode_i_blocks()  argument
83 	return (inode->i_blocks |  in ext2fs_inode_i_blocks()
84 		(ext2fs_has_feature_huge_file(fs->super) ?  in ext2fs_inode_i_blocks()
85 		 (__u64)inode->osd2.linux2.l_i_blocks_hi << 32 : 0));  in ext2fs_inode_i_blocks()
89  * Return the fs block count
93 	return super->s_blocks_count |  in ext2fs_blocks_count()
95 		(__u64) super->s_blocks_count_hi << 32 : 0);  in ext2fs_blocks_count()
99  * Set the fs block count
103 	super->s_blocks_count = blk;  in ext2fs_blocks_count_set()
105 		super->s_blocks_count_hi = (__u64) blk >> 32;  in ext2fs_blocks_count_set()
109  * Add to the current fs block count
119  * Return the fs reserved block count
123 	return super->s_r_blocks_count |  in ext2fs_r_blocks_count()
125 		(__u64) super->s_r_blocks_count_hi << 32 : 0);  in ext2fs_r_blocks_count()
129  * Set the fs reserved block count
133 	super->s_r_blocks_count = blk;  in ext2fs_r_blocks_count_set()
135 		super->s_r_blocks_count_hi = (__u64) blk >> 32;  in ext2fs_r_blocks_count_set()
139  * Add to the current reserved fs block count
149  * Return the fs free block count
153 	return super->s_free_blocks_count |  in ext2fs_free_blocks_count()
155 		(__u64) super->s_free_blocks_hi << 32 : 0);  in ext2fs_free_blocks_count()
159  * Set the fs free block count
163 	super->s_free_blocks_count = blk;  in ext2fs_free_blocks_count_set()
165 		super->s_free_blocks_hi = (__u64) blk >> 32;  in ext2fs_free_blocks_count_set()
169  * Add to the current free fs block count
184 struct ext2_group_desc *ext2fs_group_desc(ext2_filsys fs,  in ext2fs_group_desc()  argument
188 	int desc_size = EXT2_DESC_SIZE(fs->super) & ~7;  in ext2fs_group_desc()
194 static struct ext4_group_desc *ext4fs_group_desc(ext2_filsys fs,  in ext4fs_group_desc()  argument
198 	return (struct ext4_group_desc *)ext2fs_group_desc(fs, gdp, group);  in ext4fs_group_desc()
204 __u32 ext2fs_block_bitmap_checksum(ext2_filsys fs, dgrp_t group)  in ext2fs_block_bitmap_checksum()  argument
209 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_block_bitmap_checksum()
210 	csum = gdp->bg_block_bitmap_csum_lo;  in ext2fs_block_bitmap_checksum()
211 	if (EXT2_DESC_SIZE(fs->super) >= EXT4_BG_BLOCK_BITMAP_CSUM_HI_LOCATION)  in ext2fs_block_bitmap_checksum()
212 		csum |= ((__u32)gdp->bg_block_bitmap_csum_hi << 16);  in ext2fs_block_bitmap_checksum()
219 blk64_t ext2fs_block_bitmap_loc(ext2_filsys fs, dgrp_t group)  in ext2fs_block_bitmap_loc()  argument
223 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_block_bitmap_loc()
224 	return gdp->bg_block_bitmap |  in ext2fs_block_bitmap_loc()
225 		(ext2fs_has_feature_64bit(fs->super) ?  in ext2fs_block_bitmap_loc()
226 		 (__u64)gdp->bg_block_bitmap_hi << 32 : 0);  in ext2fs_block_bitmap_loc()
232 void ext2fs_block_bitmap_loc_set(ext2_filsys fs, dgrp_t group, blk64_t blk)  in ext2fs_block_bitmap_loc_set()  argument
236 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_block_bitmap_loc_set()
237 	gdp->bg_block_bitmap = blk;  in ext2fs_block_bitmap_loc_set()
238 	if (ext2fs_has_feature_64bit(fs->super))  in ext2fs_block_bitmap_loc_set()
239 		gdp->bg_block_bitmap_hi = (__u64) blk >> 32;  in ext2fs_block_bitmap_loc_set()
245 __u32 ext2fs_inode_bitmap_checksum(ext2_filsys fs, dgrp_t group)  in ext2fs_inode_bitmap_checksum()  argument
250 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_inode_bitmap_checksum()
251 	csum = gdp->bg_inode_bitmap_csum_lo;  in ext2fs_inode_bitmap_checksum()
252 	if (EXT2_DESC_SIZE(fs->super) >= EXT4_BG_INODE_BITMAP_CSUM_HI_END)  in ext2fs_inode_bitmap_checksum()
253 		csum |= ((__u32)gdp->bg_inode_bitmap_csum_hi << 16);  in ext2fs_inode_bitmap_checksum()
260 blk64_t ext2fs_inode_bitmap_loc(ext2_filsys fs, dgrp_t group)  in ext2fs_inode_bitmap_loc()  argument
264 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_inode_bitmap_loc()
265 	return gdp->bg_inode_bitmap |  in ext2fs_inode_bitmap_loc()
266 		(ext2fs_has_feature_64bit(fs->super) ?  in ext2fs_inode_bitmap_loc()
267 		 (__u64) gdp->bg_inode_bitmap_hi << 32 : 0);  in ext2fs_inode_bitmap_loc()
273 void ext2fs_inode_bitmap_loc_set(ext2_filsys fs, dgrp_t group, blk64_t blk)  in ext2fs_inode_bitmap_loc_set()  argument
277 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_inode_bitmap_loc_set()
278 	gdp->bg_inode_bitmap = blk;  in ext2fs_inode_bitmap_loc_set()
279 	if (ext2fs_has_feature_64bit(fs->super))  in ext2fs_inode_bitmap_loc_set()
280 		gdp->bg_inode_bitmap_hi = (__u64) blk >> 32;  in ext2fs_inode_bitmap_loc_set()
286 blk64_t ext2fs_inode_table_loc(ext2_filsys fs, dgrp_t group)  in ext2fs_inode_table_loc()  argument
290 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_inode_table_loc()
291 	return gdp->bg_inode_table |  in ext2fs_inode_table_loc()
292 		(ext2fs_has_feature_64bit(fs->super) ?  in ext2fs_inode_table_loc()
293 		 (__u64) gdp->bg_inode_table_hi << 32 : 0);  in ext2fs_inode_table_loc()
299 void ext2fs_inode_table_loc_set(ext2_filsys fs, dgrp_t group, blk64_t blk)  in ext2fs_inode_table_loc_set()  argument
303 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_inode_table_loc_set()
304 	gdp->bg_inode_table = blk;  in ext2fs_inode_table_loc_set()
305 	if (ext2fs_has_feature_64bit(fs->super))  in ext2fs_inode_table_loc_set()
306 		gdp->bg_inode_table_hi = (__u64) blk >> 32;  in ext2fs_inode_table_loc_set()
312 __u32 ext2fs_bg_free_blocks_count(ext2_filsys fs, dgrp_t group)  in ext2fs_bg_free_blocks_count()  argument
316 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_free_blocks_count()
317 	return gdp->bg_free_blocks_count |  in ext2fs_bg_free_blocks_count()
318 		(ext2fs_has_feature_64bit(fs->super) ?  in ext2fs_bg_free_blocks_count()
319 		 (__u32) gdp->bg_free_blocks_count_hi << 16 : 0);  in ext2fs_bg_free_blocks_count()
325 void ext2fs_bg_free_blocks_count_set(ext2_filsys fs, dgrp_t group, __u32 n)  in ext2fs_bg_free_blocks_count_set()  argument
329 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_free_blocks_count_set()
330 	gdp->bg_free_blocks_count = n;  in ext2fs_bg_free_blocks_count_set()
332 	if (ext2fs_has_feature_64bit(fs->super))  in ext2fs_bg_free_blocks_count_set()
333 		gdp->bg_free_blocks_count_hi = (__u32) n >> 16;  in ext2fs_bg_free_blocks_count_set()
339 __u32 ext2fs_bg_free_inodes_count(ext2_filsys fs, dgrp_t group)  in ext2fs_bg_free_inodes_count()  argument
343 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_free_inodes_count()
344 	return gdp->bg_free_inodes_count |  in ext2fs_bg_free_inodes_count()
345 		(ext2fs_has_feature_64bit(fs->super) ?  in ext2fs_bg_free_inodes_count()
346 		 (__u32) gdp->bg_free_inodes_count_hi << 16 : 0);  in ext2fs_bg_free_inodes_count()
352 void ext2fs_bg_free_inodes_count_set(ext2_filsys fs, dgrp_t group, __u32 n)  in ext2fs_bg_free_inodes_count_set()  argument
356 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_free_inodes_count_set()
357 	gdp->bg_free_inodes_count = n;  in ext2fs_bg_free_inodes_count_set()
358 	if (ext2fs_has_feature_64bit(fs->super))  in ext2fs_bg_free_inodes_count_set()
359 		gdp->bg_free_inodes_count_hi = (__u32) n >> 16;  in ext2fs_bg_free_inodes_count_set()
365 __u32 ext2fs_bg_used_dirs_count(ext2_filsys fs, dgrp_t group)  in ext2fs_bg_used_dirs_count()  argument
369 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_used_dirs_count()
370 	return gdp->bg_used_dirs_count |  in ext2fs_bg_used_dirs_count()
371 		(ext2fs_has_feature_64bit(fs->super) ?  in ext2fs_bg_used_dirs_count()
372 		 (__u32) gdp->bg_used_dirs_count_hi << 16 : 0);  in ext2fs_bg_used_dirs_count()
378 void ext2fs_bg_used_dirs_count_set(ext2_filsys fs, dgrp_t group, __u32 n)  in ext2fs_bg_used_dirs_count_set()  argument
382 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_used_dirs_count_set()
383 	gdp->bg_used_dirs_count = n;  in ext2fs_bg_used_dirs_count_set()
384 	if (ext2fs_has_feature_64bit(fs->super))  in ext2fs_bg_used_dirs_count_set()
385 		gdp->bg_used_dirs_count_hi = (__u32) n >> 16;  in ext2fs_bg_used_dirs_count_set()
391 __u32 ext2fs_bg_itable_unused(ext2_filsys fs, dgrp_t group)  in ext2fs_bg_itable_unused()  argument
395 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_itable_unused()
396 	return gdp->bg_itable_unused |  in ext2fs_bg_itable_unused()
397 		(ext2fs_has_feature_64bit(fs->super) ?  in ext2fs_bg_itable_unused()
398 		 (__u32) gdp->bg_itable_unused_hi << 16 : 0);  in ext2fs_bg_itable_unused()
404 void ext2fs_bg_itable_unused_set(ext2_filsys fs, dgrp_t group, __u32 n)  in ext2fs_bg_itable_unused_set()  argument
408 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_itable_unused_set()
409 	gdp->bg_itable_unused = n;  in ext2fs_bg_itable_unused_set()
410 	if (ext2fs_has_feature_64bit(fs->super))  in ext2fs_bg_itable_unused_set()
411 		gdp->bg_itable_unused_hi = (__u32) n >> 16;  in ext2fs_bg_itable_unused_set()
417 __u16 ext2fs_bg_flags(ext2_filsys fs, dgrp_t group)  in ext2fs_bg_flags()  argument
421 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_flags()
422 	return gdp->bg_flags;  in ext2fs_bg_flags()
428 void ext2fs_bg_flags_zap(ext2_filsys fs, dgrp_t group)  in ext2fs_bg_flags_zap()  argument
432 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_flags_zap()
433 	gdp->bg_flags = 0;  in ext2fs_bg_flags_zap()
440 int ext2fs_bg_flags_test(ext2_filsys fs, dgrp_t group, __u16 bg_flag)  in ext2fs_bg_flags_test()  argument
444 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_flags_test()
445 	return gdp->bg_flags & bg_flag;  in ext2fs_bg_flags_test()
451 void ext2fs_bg_flags_set(ext2_filsys fs, dgrp_t group, __u16 bg_flags)  in ext2fs_bg_flags_set()  argument
455 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_flags_set()
456 	gdp->bg_flags |= bg_flags;  in ext2fs_bg_flags_set()
463 void ext2fs_bg_flags_clear(ext2_filsys fs, dgrp_t group, __u16 bg_flags)  in ext2fs_bg_flags_clear()  argument
467 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_flags_clear()
468 	gdp->bg_flags &= ~bg_flags;  in ext2fs_bg_flags_clear()
475 __u16 ext2fs_bg_checksum(ext2_filsys fs, dgrp_t group)  in ext2fs_bg_checksum()  argument
479 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_checksum()
480 	return gdp->bg_checksum;  in ext2fs_bg_checksum()
486 void ext2fs_bg_checksum_set(ext2_filsys fs, dgrp_t group, __u16 checksum)  in ext2fs_bg_checksum_set()  argument
490 	gdp = ext4fs_group_desc(fs, fs->group_desc, group);  in ext2fs_bg_checksum_set()
491 	gdp->bg_checksum = checksum;  in ext2fs_bg_checksum_set()
498 blk64_t ext2fs_file_acl_block(ext2_filsys fs, const struct ext2_inode *inode)  in ext2fs_file_acl_block()  argument
500 	blk64_t	blk = inode->i_file_acl;  in ext2fs_file_acl_block()
502 	if (fs && ext2fs_has_feature_64bit(fs->super))  in ext2fs_file_acl_block()
503 		blk |= ((__u64) inode->osd2.linux2.l_i_file_acl_high) << 32;  in ext2fs_file_acl_block()
510 void ext2fs_file_acl_block_set(ext2_filsys fs, struct ext2_inode *inode,  in ext2fs_file_acl_block_set()  argument
513 	inode->i_file_acl = blk;  in ext2fs_file_acl_block_set()
514 	if (fs && ext2fs_has_feature_64bit(fs->super))  in ext2fs_file_acl_block_set()
515 		inode->osd2.linux2.l_i_file_acl_high = (__u64) blk >> 32;  in ext2fs_file_acl_block_set()
521 errcode_t ext2fs_inode_size_set(ext2_filsys fs, struct ext2_inode *inode,  in ext2fs_inode_size_set()  argument
525 	if (!LINUX_S_ISREG(inode->i_mode) && (size >> 32))  in ext2fs_inode_size_set()
529 	if (LINUX_S_ISREG(inode->i_mode) &&  in ext2fs_inode_size_set()
531 	    (!ext2fs_has_feature_large_file(fs->super) ||  in ext2fs_inode_size_set()
532 	     fs->super->s_rev_level == EXT2_GOOD_OLD_REV)) {  in ext2fs_inode_size_set()
533 		ext2fs_set_feature_large_file(fs->super);  in ext2fs_inode_size_set()
534 		ext2fs_update_dynamic_rev(fs);  in ext2fs_inode_size_set()
535 		ext2fs_mark_super_dirty(fs);  in ext2fs_inode_size_set()
538 	inode->i_size = size & 0xffffffff;  in ext2fs_inode_size_set()
539 	inode->i_size_high = (size >> 32);  in ext2fs_inode_size_set()