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authorAnand Jain <anand.jain@oracle.com>2012-08-03 17:48:57 +0800
committerroot <root@localhost.localdomain>2012-10-04 16:26:32 -0400
commit2e6bcfac11542a1da015e19efc5f120f71ce411c (patch)
tree7c0360dfc078235c71f8b10637cdb76387f35d09
parentf02827c1c03e5c6d7bd02fe49d8f365680fe1aee (diff)
Btrfs-progs: add otime to the snapshot list
Reviewed-by: Alexander Block <ablock84@googlemail.com> Signed-off-by: Anand Jain <anand.jain@oracle.com>
-rw-r--r--btrfs-list.c45
1 files changed, 36 insertions, 9 deletions
diff --git a/btrfs-list.c b/btrfs-list.c
index 0374b41b..edd12a4e 100644
--- a/btrfs-list.c
+++ b/btrfs-list.c
@@ -60,6 +60,9 @@ struct root_info {
/* generation when the root is created or last updated */
u64 gen;
+ /* creation time of this root in sec*/
+ time_t otime;
+
/* path from the subvol we live in to this root, including the
* root's name. This is null until we do the extra lookup ioctl.
*/
@@ -185,7 +188,7 @@ static struct root_info *tree_search(struct rb_root *root, u64 root_id)
*/
static int add_root(struct root_lookup *root_lookup,
u64 root_id, u64 ref_tree, u64 dir_id, char *name,
- int name_len, u64 *gen)
+ int name_len, u64 *gen, time_t ot)
{
struct root_info *ri;
struct rb_node *ret;
@@ -205,6 +208,7 @@ static int add_root(struct root_lookup *root_lookup,
ri->name[name_len] = 0;
if (gen)
ri->gen = *gen;
+ ri->otime = ot;
ret = tree_insert(&root_lookup->root, root_id, ref_tree, gen,
&ri->rb_node);
@@ -215,7 +219,8 @@ static int add_root(struct root_lookup *root_lookup,
return 0;
}
-static int update_root(struct root_lookup *root_lookup, u64 root_id, u64 gen)
+static int update_root(struct root_lookup *root_lookup, u64 root_id, u64 gen,
+ time_t ot)
{
struct root_info *ri;
@@ -225,6 +230,7 @@ static int update_root(struct root_lookup *root_lookup, u64 root_id, u64 gen)
return -ENOENT;
}
ri->gen = gen;
+ ri->otime = ot;
return 0;
}
@@ -658,6 +664,7 @@ static int __list_subvol_search(int fd, struct root_lookup *root_lookup)
u64 gen = 0;
int i;
int get_gen = 0;
+ time_t t;
root_lookup_init(root_lookup);
memset(&args, 0, sizeof(args));
@@ -711,12 +718,16 @@ again:
dir_id = btrfs_stack_root_ref_dirid(ref);
add_root(root_lookup, sh->objectid, sh->offset,
- dir_id, name, name_len, NULL);
+ dir_id, name, name_len, NULL, 0);
} else if (get_gen && sh->type == BTRFS_ROOT_ITEM_KEY) {
ri = (struct btrfs_root_item *)(args.buf + off);
gen = btrfs_root_generation(ri);
+ if(ri->generation == ri->generation_v2)
+ t = ri->otime.sec;
+ else
+ t = 0;
- update_root(root_lookup, sh->objectid, gen);
+ update_root(root_lookup, sh->objectid, gen, t);
}
off += sh->len;
@@ -805,14 +816,21 @@ static int __list_snapshot_search(int fd, struct root_lookup *root_lookup)
* read the root_ref item it contains
*/
for (i = 0; i < sk->nr_items; i++) {
+ struct btrfs_root_item *item;
+ time_t t;
sh = (struct btrfs_ioctl_search_header *)(args.buf +
off);
off += sizeof(*sh);
if (sh->type == BTRFS_ROOT_ITEM_KEY && sh->offset) {
+ item = (struct btrfs_root_item *)(args.buf + off);
+ if(item->generation == item->generation_v2)
+ t = item->otime.sec;
+ else
+ t = 0;
gen = sh->offset;
add_root(root_lookup, sh->objectid, 0,
- 0, NULL, 0, &gen);
+ 0, NULL, 0, &gen, t);
}
off += sh->len;
@@ -981,24 +999,33 @@ int list_snapshots(int fd, int print_parent, int order)
u64 level;
u64 parent_id;
char *path;
+ time_t t;
+ char tstr[256];
entry_snap = rb_entry(n, struct root_info, rb_node);
entry = tree_search(&root_lookup.root, entry_snap->root_id);
resolve_root(&root_lookup, entry, &parent_id, &level, &path);
+ t = entry->otime;
+ if(t)
+ strftime(tstr,256,"%Y-%m-%d %X",localtime(&t));
+ else
+ strcpy(tstr,"-");
if (print_parent) {
- printf("ID %llu gen %llu cgen %llu parent %llu top level %llu path %s\n",
+ printf("ID %llu gen %llu cgen %llu parent %llu top level %llu "
+ "otime %s path %s\n",
(unsigned long long)entry->root_id,
(unsigned long long)entry->gen,
(unsigned long long)entry_snap->gen,
(unsigned long long)parent_id,
- (unsigned long long)level, path);
+ (unsigned long long)level, tstr, path);
} else {
- printf("ID %llu gen %llu cgen %llu top level %llu path %s\n",
+ printf("ID %llu gen %llu cgen %llu top level %llu "
+ "otime %s path %s\n",
(unsigned long long)entry->root_id,
(unsigned long long)entry->gen,
(unsigned long long)entry_snap->gen,
- (unsigned long long)level, path);
+ (unsigned long long)level, tstr, path);
}
free(path);