Ok, I've reworked the block group descriptor checksum handling code per this
email thread. INCOMPAT_BG_USE_META_CSUM is gone. METADATA_CSUM implies (and
in fact overrides) GDT_CSUM. When both are set, the group descriptor checksum
uses the same function as all other metadata blocks' checksums (by default
crc32c). I created a helper function to determine if group descriptor
checksums are enabled, and the actual gdt checksum verify/set functions are
smart enough to use the correct function.
Below are the changes that I intend to make to e2fsprogs. I'll integrate these
changes into the (huge) e2fsprogs patchset, but wanted to aggregate the changes
here first to avoid overwhelming reviewers. I'll send a kernel patch shortly.
Question: What will happen to old kernels when METADATA_CSUM and GDT_CSUM are
set? Should tune2fs/e2fsck change METADATA_CSUM|GDT_CSUM to only METADATA_CSUM
if they encounter it? I'm a little concerned that a pre-METADATA_CSUM kernel
will see the GDT_CSUM flag and assume it's ok to proceed in ro mode and get
confused.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
debugfs/debugfs.c | 3 +--
e2fsck/pass5.c | 18 ++++++-----------
e2fsck/super.c | 3 +--
e2fsck/unix.c | 2 +-
lib/e2p/feature.c | 2 --
lib/ext2fs/alloc.c | 6 ++----
lib/ext2fs/alloc_stats.c | 3 +--
lib/ext2fs/csum.c | 13 ++++--------
lib/ext2fs/ext2_fs.h | 6 +++++-
lib/ext2fs/ext2fs.h | 12 ++++++++----
lib/ext2fs/initialize.c | 3 +--
lib/ext2fs/inode.c | 9 +++------
lib/ext2fs/openfs.c | 3 +--
lib/ext2fs/rw_bitmaps.c | 12 ++++--------
misc/dumpe2fs.c | 4 ++--
misc/mke2fs.c | 23 +++++-----------------
misc/tune2fs.c | 48 +++-------------------------------------------
resize/resize2fs.c | 12 ++++--------
18 files changed, 52 insertions(+), 130 deletions(-)
diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c
index c1cbf06..9c8e48e 100644
--- a/debugfs/debugfs.c
+++ b/debugfs/debugfs.c
@@ -357,8 +357,7 @@ void do_show_super_stats(int argc, char *argv[])
return;
}
- gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ gdt_csum = ext2fs_has_group_desc_csum(current_fs);
for (i = 0; i < current_fs->group_desc_count; i++) {
fprintf(out, " Group %2d: block bitmap at %llu, "
"inode bitmap at %llu, "
diff --git a/e2fsck/pass5.c b/e2fsck/pass5.c
index f1ce6d7..c5dba0b 100644
--- a/e2fsck/pass5.c
+++ b/e2fsck/pass5.c
@@ -88,7 +88,7 @@ static void check_inode_bitmap_checksum(e2fsck_t ctx)
int nbytes;
ext2_ino_t ino_itr;
errcode_t retval;
- int csum_flag = 0;
+ int csum_flag;
/* If bitmap is dirty from being fixed, checksum will be corrected */
if (ext2fs_test_ib_dirty(ctx->fs))
@@ -103,9 +103,7 @@ static void check_inode_bitmap_checksum(e2fsck_t ctx)
fatal_error(ctx, 0);
}
- if (EXT2_HAS_RO_COMPAT_FEATURE(ctx->fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
- csum_flag = 1;
+ csum_flag = ext2fs_has_group_desc_csum(ctx->fs);
clear_problem_context(&pctx);
for (i = 0; i < ctx->fs->group_desc_count; i++) {
@@ -149,7 +147,7 @@ static void check_block_bitmap_checksum(e2fsck_t ctx)
int nbytes;
blk64_t blk_itr;
errcode_t retval;
- int csum_flag = 0;
+ int csum_flag;
/* If bitmap is dirty from being fixed, checksum will be corrected */
if (ext2fs_test_bb_dirty(ctx->fs))
@@ -164,9 +162,7 @@ static void check_block_bitmap_checksum(e2fsck_t ctx)
fatal_error(ctx, 0);
}
- if (EXT2_HAS_RO_COMPAT_FEATURE(ctx->fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
- csum_flag = 1;
+ csum_flag = ext2fs_has_group_desc_csum(ctx->fs);
clear_problem_context(&pctx);
for (i = 0; i < ctx->fs->group_desc_count; i++) {
@@ -322,8 +318,7 @@ static void check_block_bitmaps(e2fsck_t ctx)
goto errout;
}
- csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ csum_flag = ext2fs_has_group_desc_csum(fs);
redo_counts:
had_problem = 0;
save_problem = 0;
@@ -599,8 +594,7 @@ static void check_inode_bitmaps(e2fsck_t ctx)
goto errout;
}
- csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ csum_flag = ext2fs_has_group_desc_csum(fs);
redo_counts:
had_problem = 0;
save_problem = 0;
diff --git a/e2fsck/super.c b/e2fsck/super.c
index dbd337c..5f6fb08 100644
--- a/e2fsck/super.c
+++ b/e2fsck/super.c
@@ -583,8 +583,7 @@ void check_super_block(e2fsck_t ctx)
first_block = sb->s_first_data_block;
last_block = ext2fs_blocks_count(sb)-1;
- csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ csum_flag = ext2fs_has_group_desc_csum(fs);
for (i = 0; i < fs->group_desc_count; i++) {
pctx.group = i;
diff --git a/e2fsck/unix.c b/e2fsck/unix.c
index 9319e40..d3fb8f8 100644
--- a/e2fsck/unix.c
+++ b/e2fsck/unix.c
@@ -1658,7 +1658,7 @@ no_journal:
}
if ((run_result & E2F_FLAG_CANCEL) == 0 &&
- sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM &&
+ ext2fs_has_group_desc_csum(ctx->fs) &&
!(ctx->options & E2F_OPT_READONLY)) {
retval = ext2fs_set_gdt_csum(ctx->fs);
if (retval) {
diff --git a/lib/e2p/feature.c b/lib/e2p/feature.c
index 9f9c6dd..486f846 100644
--- a/lib/e2p/feature.c
+++ b/lib/e2p/feature.c
@@ -87,8 +87,6 @@ static struct feature feature_list[] = {
"mmp" },
{ E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG,
"flex_bg"},
- { E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM,
- "bg_use_meta_csum"},
{ 0, 0, 0 },
};
diff --git a/lib/ext2fs/alloc.c b/lib/ext2fs/alloc.c
index 948a0ec..e62ed68 100644
--- a/lib/ext2fs/alloc.c
+++ b/lib/ext2fs/alloc.c
@@ -36,8 +36,7 @@ static void check_block_uninit(ext2_filsys fs, ext2fs_block_bitmap map,
blk64_t blk, super_blk, old_desc_blk, new_desc_blk;
int old_desc_blocks;
- if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) ||
+ if (!ext2fs_has_group_desc_csum(fs) ||
!(ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT)))
return;
@@ -83,8 +82,7 @@ static void check_inode_uninit(ext2_filsys fs, ext2fs_inode_bitmap map,
{
ext2_ino_t i, ino;
- if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) ||
+ if (!ext2fs_has_group_desc_csum(fs) ||
!(ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT)))
return;
diff --git a/lib/ext2fs/alloc_stats.c b/lib/ext2fs/alloc_stats.c
index adec363..4229084 100644
--- a/lib/ext2fs/alloc_stats.c
+++ b/lib/ext2fs/alloc_stats.c
@@ -38,8 +38,7 @@ void ext2fs_inode_alloc_stats2(ext2_filsys fs, ext2_ino_t ino,
/* We don't strictly need to be clearing the uninit flag if inuse < 0
* (i.e. freeing inodes) but it also means something is bad. */
ext2fs_bg_flags_clear(fs, group, EXT2_BG_INODE_UNINIT);
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ if (ext2fs_has_group_desc_csum(fs)) {
ext2_ino_t first_unused_inode = fs->super->s_inodes_per_group -
ext2fs_bg_itable_unused(fs, group) +
group * fs->super->s_inodes_per_group + 1;
diff --git a/lib/ext2fs/csum.c b/lib/ext2fs/csum.c
index 99ca652..425f736 100644
--- a/lib/ext2fs/csum.c
+++ b/lib/ext2fs/csum.c
@@ -743,9 +743,7 @@ STATIC __u16 ext2fs_group_desc_csum(ext2_filsys fs, dgrp_t group)
#endif
if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) &&
- EXT2_HAS_INCOMPAT_FEATURE(fs->super,
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)) {
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
/* new metadata csum code */
__u16 old_crc;
__u32 crc32;
@@ -781,8 +779,7 @@ out:
int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group)
{
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM) &&
+ if (ext2fs_has_group_desc_csum(fs) &&
(ext2fs_bg_checksum(fs, group) !=
ext2fs_group_desc_csum(fs, group)))
return 0;
@@ -792,8 +789,7 @@ int ext2fs_group_desc_csum_verify(ext2_filsys fs, dgrp_t group)
void ext2fs_group_desc_csum_set(ext2_filsys fs, dgrp_t group)
{
- if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
+ if (!ext2fs_has_group_desc_csum(fs))
return;
/* ext2fs_bg_checksum_set() sets the actual checksum field but
@@ -827,8 +823,7 @@ errcode_t ext2fs_set_gdt_csum(ext2_filsys fs)
if (!fs->inode_map)
return EXT2_ET_NO_INODE_BITMAP;
- if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
+ if (!ext2fs_has_group_desc_csum(fs))
return 0;
for (i = 0; i < fs->group_desc_count; i++) {
diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
index c2e7fbe..89df977 100644
--- a/lib/ext2fs/ext2_fs.h
+++ b/lib/ext2fs/ext2_fs.h
@@ -729,6 +729,11 @@ struct ext2_super_block {
#define EXT4_FEATURE_RO_COMPAT_HAS_SNAPSHOT 0x0080
#define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100
#define EXT4_FEATURE_RO_COMPAT_BIGALLOC 0x0200
+/*
+ * METADATA_CSUM implies GDT_CSUM. When METADATA_CSUM is set, group
+ * descriptor checksums use the same algorithm as all other data
+ * structures' checksums.
+ */
#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
#define EXT4_FEATURE_RO_COMPAT_REPLICA 0x0800
@@ -743,7 +748,6 @@ struct ext2_super_block {
#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
#define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400
#define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000
-#define EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM 0x8000
#define EXT2_FEATURE_COMPAT_SUPP 0
#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index ff2799a..28cb626 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -579,8 +579,7 @@ typedef struct ext2_icount *ext2_icount_t;
EXT3_FEATURE_INCOMPAT_EXTENTS|\
EXT4_FEATURE_INCOMPAT_FLEX_BG|\
EXT4_FEATURE_INCOMPAT_MMP|\
- EXT4_FEATURE_INCOMPAT_64BIT|\
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)
+ EXT4_FEATURE_INCOMPAT_64BIT)
#else
#define EXT2_LIB_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE|\
EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|\
@@ -589,8 +588,7 @@ typedef struct ext2_icount *ext2_icount_t;
EXT3_FEATURE_INCOMPAT_EXTENTS|\
EXT4_FEATURE_INCOMPAT_FLEX_BG|\
EXT4_FEATURE_INCOMPAT_MMP|\
- EXT4_FEATURE_INCOMPAT_64BIT|\
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)
+ EXT4_FEATURE_INCOMPAT_64BIT)
#endif
#ifdef CONFIG_QUOTA
#define EXT2_LIB_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER|\
@@ -646,6 +644,12 @@ typedef struct stat ext2fs_struct_stat;
/*
* function prototypes
*/
+static inline int ext2fs_has_group_desc_csum(ext2_filsys fs)
+{
+ return EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
+}
/* alloc.c */
extern errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode,
diff --git a/lib/ext2fs/initialize.c b/lib/ext2fs/initialize.c
index a63ea18..a22cab4 100644
--- a/lib/ext2fs/initialize.c
+++ b/lib/ext2fs/initialize.c
@@ -435,8 +435,7 @@ ipg_retry:
* bitmaps will be accounted for when allocated).
*/
free_blocks = 0;
- csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ csum_flag = ext2fs_has_group_desc_csum(fs);
for (i = 0; i < fs->group_desc_count; i++) {
/*
* Don't set the BLOCK_UNINIT group for the last group
diff --git a/lib/ext2fs/inode.c b/lib/ext2fs/inode.c
index 74703c5..3e6d853 100644
--- a/lib/ext2fs/inode.c
+++ b/lib/ext2fs/inode.c
@@ -157,8 +157,7 @@ errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
scan->current_group);
scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super);
scan->blocks_left = scan->fs->inode_blocks_per_group;
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ if (ext2fs_has_group_desc_csum(fs)) {
scan->inodes_left -=
ext2fs_bg_itable_unused(fs, scan->current_group);
scan->blocks_left =
@@ -183,8 +182,7 @@ errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
}
if (scan->fs->badblocks && scan->fs->badblocks->num)
scan->scan_flags |= EXT2_SF_CHK_BADBLOCKS;
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
+ if (ext2fs_has_group_desc_csum(fs))
scan->scan_flags |= EXT2_SF_DO_LAZY;
*ret_scan = scan;
return 0;
@@ -250,8 +248,7 @@ static errcode_t get_next_blockgroup(ext2_inode_scan scan)
scan->bytes_left = 0;
scan->inodes_left = EXT2_INODES_PER_GROUP(fs->super);
scan->blocks_left = fs->inode_blocks_per_group;
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ if (ext2fs_has_group_desc_csum(fs)) {
scan->inodes_left -=
ext2fs_bg_itable_unused(fs, scan->current_group);
scan->blocks_left =
diff --git a/lib/ext2fs/openfs.c b/lib/ext2fs/openfs.c
index d2b64f4..2dc9b94 100644
--- a/lib/ext2fs/openfs.c
+++ b/lib/ext2fs/openfs.c
@@ -382,8 +382,7 @@ errcode_t ext2fs_open2(const char *name, const char *io_options,
* If recovery is from backup superblock, Clear _UNININT flags &
* reset bg_itable_unused to zero
*/
- if (superblock > 1 && EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
+ if (superblock > 1 && ext2fs_has_group_desc_csum(fs)) {
dgrp_t group;
for (group = 0; group < fs->group_desc_count; group++) {
diff --git a/lib/ext2fs/rw_bitmaps.c b/lib/ext2fs/rw_bitmaps.c
index a5097c1..18e18aa 100644
--- a/lib/ext2fs/rw_bitmaps.c
+++ b/lib/ext2fs/rw_bitmaps.c
@@ -36,7 +36,7 @@ static errcode_t write_bitmaps(ext2_filsys fs, int do_inode, int do_block)
unsigned int nbits;
errcode_t retval;
char *block_buf = NULL, *inode_buf = NULL;
- int csum_flag = 0;
+ int csum_flag;
blk64_t blk;
blk64_t blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
ext2_ino_t ino_itr = 1;
@@ -46,9 +46,7 @@ static errcode_t write_bitmaps(ext2_filsys fs, int do_inode, int do_block)
if (!(fs->flags & EXT2_FLAG_RW))
return EXT2_ET_RO_FILSYS;
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
- csum_flag = 1;
+ csum_flag = ext2fs_has_group_desc_csum(fs);
inode_nbytes = block_nbytes = 0;
if (do_block) {
@@ -168,7 +166,7 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
errcode_t retval;
int block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
int inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
- int csum_flag = 0;
+ int csum_flag;
int do_image = fs->flags & EXT2_FLAG_IMAGE_FILE;
unsigned int cnt;
blk64_t blk;
@@ -181,9 +179,7 @@ static errcode_t read_bitmaps(ext2_filsys fs, int do_inode, int do_block)
fs->write_bitmaps = ext2fs_write_bitmaps;
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
- csum_flag = 1;
+ csum_flag = ext2fs_has_group_desc_csum(fs);
retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);
if (retval)
diff --git a/misc/dumpe2fs.c b/misc/dumpe2fs.c
index b8f386e..3ceb0f8 100644
--- a/misc/dumpe2fs.c
+++ b/misc/dumpe2fs.c
@@ -114,7 +114,7 @@ static void print_bg_opts(ext2_filsys fs, dgrp_t i)
{
int first = 1, bg_flags = 0;
- if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
+ if (ext2fs_has_group_desc_csum(fs))
bg_flags = ext2fs_bg_flags(fs, i);
print_bg_opt(bg_flags, EXT2_BG_INODE_UNINIT, "INODE_UNINIT",
@@ -190,7 +190,7 @@ static void list_desc (ext2_filsys fs)
print_range(first_block, last_block);
fputs(")", stdout);
print_bg_opts(fs, i);
- if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
+ if (ext2fs_has_group_desc_csum(fs))
printf(_(" Checksum 0x%04x, unused inodes %u\n"),
ext2fs_bg_checksum(fs, i),
ext2fs_bg_itable_unused(fs, i));
diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index 8852735..f5d3d3b 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -885,8 +885,7 @@ static __u32 ok_features[3] = {
EXT2_FEATURE_INCOMPAT_META_BG|
EXT4_FEATURE_INCOMPAT_FLEX_BG|
EXT4_FEATURE_INCOMPAT_MMP |
- EXT4_FEATURE_INCOMPAT_64BIT |
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM,
+ EXT4_FEATURE_INCOMPAT_64BIT,
/* R/O compat */
EXT2_FEATURE_RO_COMPAT_LARGE_FILE|
EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
@@ -2049,7 +2048,8 @@ static int should_do_undo(const char *name)
int csum_flag, force_undo;
csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(&fs_param,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
force_undo = get_int_from_profile(fs_types, "force_undo", 0);
if (!force_undo && (!csum_flag || !lazy_itable_init))
return 0;
@@ -2306,19 +2306,6 @@ int main (int argc, char *argv[])
if (!quiet &&
EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
- if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
- printf(_("Group descriptor checksums "
- "are not enabled. This reduces the "
- "coverage of metadata checksumming. "
- "Pass -O uninit_bg to rectify.\n"));
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM) &&
- !EXT2_HAS_INCOMPAT_FEATURE(fs->super,
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM))
- printf(_("Group descriptor checksums will not use "
- "the faster metadata_checksum algorithm. "
- "Pass -O bg_use_meta_csum to rectify.\n"));
if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
EXT3_FEATURE_INCOMPAT_EXTENTS))
printf(_("Extents are not enabled. The file extent "
@@ -2358,6 +2345,7 @@ int main (int argc, char *argv[])
(fs_param.s_feature_ro_compat &
(EXT4_FEATURE_RO_COMPAT_HUGE_FILE|EXT4_FEATURE_RO_COMPAT_GDT_CSUM|
EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
+ EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|
EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)))
fs->super->s_kbytes_written = 1;
@@ -2505,8 +2493,7 @@ int main (int argc, char *argv[])
* inodes as unused; we want e2fsck to consider all
* inodes as potentially containing recoverable data.
*/
- if (fs->super->s_feature_ro_compat &
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
+ if (ext2fs_has_group_desc_csum(fs)) {
for (i = 1; i < fs->group_desc_count; i++)
ext2fs_bg_itable_unused_set(fs, i, 0);
}
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index cba4d4c..5a55412 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -92,7 +92,6 @@ static unsigned long new_inode_size;
static char *ext_mount_opts;
static int usrquota, grpquota;
static int rewrite_checksums;
-static int rewrite_bgs_for_checksum;
int journal_size, journal_flags;
char *journal_device;
@@ -138,8 +137,7 @@ static __u32 ok_features[3] = {
EXT2_FEATURE_INCOMPAT_FILETYPE |
EXT3_FEATURE_INCOMPAT_EXTENTS |
EXT4_FEATURE_INCOMPAT_FLEX_BG |
- EXT4_FEATURE_INCOMPAT_MMP |
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM,
+ EXT4_FEATURE_INCOMPAT_MMP,
/* R/O compat */
EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
@@ -159,8 +157,7 @@ static __u32 clear_ok_features[3] = {
/* Incompat */
EXT2_FEATURE_INCOMPAT_FILETYPE |
EXT4_FEATURE_INCOMPAT_FLEX_BG |
- EXT4_FEATURE_INCOMPAT_MMP |
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM,
+ EXT4_FEATURE_INCOMPAT_MMP,
/* R/O compat */
EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
@@ -718,29 +715,6 @@ static void rewrite_metadata_checksums(ext2_filsys fs)
}
/*
- * Rewrite just the block group checksums. Only call this function if
- * you're _not_ calling rewrite_metadata_checksums; this function exists
- * to handle the case that you're changing bg_use_meta_csum and NOT changing
- * either gdt_csum or metadata_csum.
- */
-static void rewrite_bg_checksums(ext2_filsys fs)
-{
- int i;
-
- if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM) ||
- !EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
- return;
-
- ext2fs_init_csum_seed(fs);
- for (i = 0; i < fs->group_desc_count; i++)
- ext2fs_group_desc_csum_set(fs, i);
- fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
- ext2fs_mark_super_dirty(fs);
-}
-
-/*
* Update the feature set as provided by the user.
*/
static int update_feature_set(ext2_filsys fs, char *features)
@@ -912,20 +886,6 @@ mmp_error:
}
}
- if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)) {
- if (check_fsck_needed(fs))
- exit(1);
- rewrite_bgs_for_checksum = 1;
- }
-
- if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
- EXT4_FEATURE_INCOMPAT_BG_USE_META_CSUM)) {
- if (check_fsck_needed(fs))
- exit(1);
- rewrite_bgs_for_checksum = 1;
- }
-
if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
if (check_fsck_needed(fs))
@@ -965,7 +925,7 @@ mmp_error:
}
gd->bg_itable_unused = 0;
gd->bg_flags = 0;
- gd->bg_checksum = 0;
+ ext2fs_group_desc_csum_set(fs, i);
}
fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
}
@@ -2588,8 +2548,6 @@ retry_open:
}
if (rewrite_checksums)
rewrite_metadata_checksums(fs);
- else if (rewrite_bgs_for_checksum)
- rewrite_bg_checksums(fs);
if (I_flag) {
if (mount_flags & EXT2_MF_MOUNTED) {
fputs(_("The inode size may only be "
diff --git a/resize/resize2fs.c b/resize/resize2fs.c
index dc2805d..8a02ff4 100644
--- a/resize/resize2fs.c
+++ b/resize/resize2fs.c
@@ -191,8 +191,7 @@ static void fix_uninit_block_bitmaps(ext2_filsys fs)
int old_desc_blocks;
dgrp_t g;
- if (!(EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM)))
+ if (!ext2fs_has_group_desc_csum(fs))
return;
for (g=0; g < fs->group_desc_count; g++) {
@@ -482,8 +481,7 @@ retry:
group_block = fs->super->s_first_data_block +
old_fs->group_desc_count * fs->super->s_blocks_per_group;
- csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ csum_flag = ext2fs_has_group_desc_csum(fs);
adj = old_fs->group_desc_count;
max_group = fs->group_desc_count - adj;
if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
@@ -743,8 +741,7 @@ static void mark_fs_metablock(ext2_resize_t rfs,
} else if (IS_INODE_TB(fs, group, blk)) {
ext2fs_inode_table_loc_set(fs, group, 0);
rfs->needed_blocks++;
- } else if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM) &&
+ } else if (ext2fs_has_group_desc_csum(fs) &&
(ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT))) {
/*
* If the block bitmap is uninitialized, which means
@@ -804,8 +801,7 @@ static errcode_t blocks_to_move(ext2_resize_t rfs)
for (blk = ext2fs_blocks_count(fs->super);
blk < ext2fs_blocks_count(old_fs->super); blk++) {
g = ext2fs_group_of_blk2(fs, blk);
- if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
- EXT4_FEATURE_RO_COMPAT_GDT_CSUM) &&
+ if (ext2fs_has_group_desc_csum(fs) &&
ext2fs_bg_flags_test(old_fs, g, EXT2_BG_BLOCK_UNINIT)) {
/*
* The block bitmap is uninitialized, so skip
--
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