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btrfs-progs: print-tree: Print hex and human readable root flags

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Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2016-08-19 16:13:08 +08:00 committed by David Sterba
parent 44e2b7a7e5
commit 1c202eb06d
1 changed files with 15 additions and 0 deletions
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15
print-tree.c
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@ -496,18 +496,31 @@ static int count_bytes(void *buf, int len, char b)
return cnt; return cnt;
} }
/*
* Caller must ensure sizeof(*ret) >= 7 "RDONLY"
*/
static void root_flags_to_str(u64 flags, char *ret)
{
if (flags & BTRFS_ROOT_SUBVOL_RDONLY)
strcat(ret, "RDONLY");
else
strcat(ret, "none");
}
static void print_root(struct extent_buffer *leaf, int slot) static void print_root(struct extent_buffer *leaf, int slot)
{ {
struct btrfs_root_item *ri; struct btrfs_root_item *ri;
struct btrfs_root_item root_item; struct btrfs_root_item root_item;
int len; int len;
char uuid_str[BTRFS_UUID_UNPARSED_SIZE]; char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
char flags_str[32] = {0};
ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item); ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
len = btrfs_item_size_nr(leaf, slot); len = btrfs_item_size_nr(leaf, slot);
memset(&root_item, 0, sizeof(root_item)); memset(&root_item, 0, sizeof(root_item));
read_extent_buffer(leaf, &root_item, (unsigned long)ri, len); read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
root_flags_to_str(btrfs_root_flags(&root_item), flags_str);
printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu lastsnap %llu\n", printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu lastsnap %llu\n",
(unsigned long long)btrfs_root_bytenr(&root_item), (unsigned long long)btrfs_root_bytenr(&root_item),
@ -516,6 +529,8 @@ static void print_root(struct extent_buffer *leaf, int slot)
btrfs_root_refs(&root_item), btrfs_root_refs(&root_item),
(unsigned long long)btrfs_root_generation(&root_item), (unsigned long long)btrfs_root_generation(&root_item),
(unsigned long long)btrfs_root_last_snapshot(&root_item)); (unsigned long long)btrfs_root_last_snapshot(&root_item));
printf("\t\tflags 0x%llx(%s)\n", btrfs_root_flags(&root_item),
flags_str);
if (root_item.generation == root_item.generation_v2) { if (root_item.generation == root_item.generation_v2) {
uuid_unparse(root_item.uuid, uuid_str); uuid_unparse(root_item.uuid, uuid_str);