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Btrfs-progs: add otime to the snapshot list

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Reviewed-by: Alexander Block <ablock84@googlemail.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
This commit is contained in:
Anand Jain 2012-08-03 17:48:57 +08:00 committed by root
parent f02827c1c0
commit 2e6bcfac11
1 changed files with 36 additions and 9 deletions
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45
btrfs-list.c
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@ -60,6 +60,9 @@ struct root_info {
/* generation when the root is created or last updated */ /* generation when the root is created or last updated */
u64 gen; u64 gen;
/* creation time of this root in sec*/
time_t otime;
/* path from the subvol we live in to this root, including the /* 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. * 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, static int add_root(struct root_lookup *root_lookup,
u64 root_id, u64 ref_tree, u64 dir_id, char *name, 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 root_info *ri;
struct rb_node *ret; struct rb_node *ret;
@ -205,6 +208,7 @@ static int add_root(struct root_lookup *root_lookup,
ri->name[name_len] = 0; ri->name[name_len] = 0;
if (gen) if (gen)
ri->gen = *gen; ri->gen = *gen;
ri->otime = ot;
ret = tree_insert(&root_lookup->root, root_id, ref_tree, gen, ret = tree_insert(&root_lookup->root, root_id, ref_tree, gen,
&ri->rb_node); &ri->rb_node);
@ -215,7 +219,8 @@ static int add_root(struct root_lookup *root_lookup,
return 0; 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; struct root_info *ri;
@ -225,6 +230,7 @@ static int update_root(struct root_lookup *root_lookup, u64 root_id, u64 gen)
return -ENOENT; return -ENOENT;
} }
ri->gen = gen; ri->gen = gen;
ri->otime = ot;
return 0; return 0;
} }
@ -658,6 +664,7 @@ static int __list_subvol_search(int fd, struct root_lookup *root_lookup)
u64 gen = 0; u64 gen = 0;
int i; int i;
int get_gen = 0; int get_gen = 0;
time_t t;
root_lookup_init(root_lookup); root_lookup_init(root_lookup);
memset(&args, 0, sizeof(args)); memset(&args, 0, sizeof(args));
@ -711,12 +718,16 @@ again:
dir_id = btrfs_stack_root_ref_dirid(ref); dir_id = btrfs_stack_root_ref_dirid(ref);
add_root(root_lookup, sh->objectid, sh->offset, 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) { } else if (get_gen && sh->type == BTRFS_ROOT_ITEM_KEY) {
ri = (struct btrfs_root_item *)(args.buf + off); ri = (struct btrfs_root_item *)(args.buf + off);
gen = btrfs_root_generation(ri); 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; 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 * read the root_ref item it contains
*/ */
for (i = 0; i < sk->nr_items; i++) { for (i = 0; i < sk->nr_items; i++) {
struct btrfs_root_item *item;
time_t t;
sh = (struct btrfs_ioctl_search_header *)(args.buf + sh = (struct btrfs_ioctl_search_header *)(args.buf +
off); off);
off += sizeof(*sh); off += sizeof(*sh);
if (sh->type == BTRFS_ROOT_ITEM_KEY && sh->offset) { 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; gen = sh->offset;
add_root(root_lookup, sh->objectid, 0, add_root(root_lookup, sh->objectid, 0,
0, NULL, 0, &gen); 0, NULL, 0, &gen, t);
} }
off += sh->len; off += sh->len;
@ -981,24 +999,33 @@ int list_snapshots(int fd, int print_parent, int order)
u64 level; u64 level;
u64 parent_id; u64 parent_id;
char *path; char *path;
time_t t;
char tstr[256];
entry_snap = rb_entry(n, struct root_info, rb_node); entry_snap = rb_entry(n, struct root_info, rb_node);
entry = tree_search(&root_lookup.root, entry_snap->root_id); entry = tree_search(&root_lookup.root, entry_snap->root_id);
resolve_root(&root_lookup, entry, &parent_id, &level, &path); 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) { 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->root_id,
(unsigned long long)entry->gen, (unsigned long long)entry->gen,
(unsigned long long)entry_snap->gen, (unsigned long long)entry_snap->gen,
(unsigned long long)parent_id, (unsigned long long)parent_id,
(unsigned long long)level, path); (unsigned long long)level, tstr, path);
} else { } 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->root_id,
(unsigned long long)entry->gen, (unsigned long long)entry->gen,
(unsigned long long)entry_snap->gen, (unsigned long long)entry_snap->gen,
(unsigned long long)level, path); (unsigned long long)level, tstr, path);
} }
free(path); free(path);