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btrfs-progs: add is_valid_csum_type() helper 

Add a helper to check if we have a valid csum type from the super block.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
master
Johannes Thumshirn 2019-09-25 15:37:23 +02:00 committed by David Sterba
parent 56198f3a9d
commit f3d7675c08
1 changed files with 12 additions and 3 deletions
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15
cmds/inspect-dump-super.c
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@ -311,6 +311,16 @@ static void print_readable_super_flag(u64 flag)
super_flags_num, BTRFS_SUPER_FLAG_SUPP);
}
static bool is_valid_csum_type(u16 csum_type)
{
switch (csum_type) {
case BTRFS_CSUM_TYPE_CRC32:
return true;
default:
return false;
}
}
static void dump_superblock(struct btrfs_super_block *sb, int full)
{
int i;
@ -326,7 +336,7 @@ static void dump_superblock(struct btrfs_super_block *sb, int full)
csum_type = btrfs_super_csum_type(sb);
csum_size = BTRFS_CSUM_SIZE;
printf("csum_type\t\t%hu (", csum_type);
if (csum_type >= ARRAY_SIZE(btrfs_csum_sizes)) {
if (!is_valid_csum_type(csum_type)) {
printf("INVALID");
} else {
if (csum_type == BTRFS_CSUM_TYPE_CRC32) {
@ -342,8 +352,7 @@ static void dump_superblock(struct btrfs_super_block *sb, int full)
printf("csum\t\t\t0x");
for (i = 0, p = sb->csum; i < csum_size; i++)
printf("%02x", p[i]);
if (csum_type != BTRFS_CSUM_TYPE_CRC32 ||
csum_size != btrfs_csum_sizes[BTRFS_CSUM_TYPE_CRC32])
if (!is_valid_csum_type(csum_type))
printf(" [UNKNOWN CSUM TYPE OR SIZE]");
else if (check_csum_sblock(sb, csum_size, csum_type))
printf(" [match]");