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Add back pointers from the inode to the directory that referenced it

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This commit is contained in:
Chris Mason 2007-12-12 14:39:36 -05:00 committed by David Woodhouse
parent 66d0930cf6
commit fba66bd865
2 changed files with 34 additions and 1 deletions
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12
ctree.h
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@ -192,6 +192,11 @@ struct btrfs_extent_ref {
__le64 offset; __le64 offset;
} __attribute__ ((__packed__)); } __attribute__ ((__packed__));
struct btrfs_inode_ref {
__le16 name_len;
/* name goes here */
} __attribute__ ((__packed__));
struct btrfs_inode_timespec { struct btrfs_inode_timespec {
__le64 sec; __le64 sec;
__le32 nsec; __le32 nsec;
@ -352,7 +357,8 @@ struct btrfs_root {
* the FS * the FS
*/ */
#define BTRFS_INODE_ITEM_KEY 1 #define BTRFS_INODE_ITEM_KEY 1
#define BTRFS_XATTR_ITEM_KEY 2 #define BTRFS_INODE_REF_KEY 2
#define BTRFS_XATTR_ITEM_KEY 8
/* reserve 3-15 close to the inode for later flexibility */ /* reserve 3-15 close to the inode for later flexibility */
@ -556,6 +562,10 @@ static inline void btrfs_set_timespec_nsec(struct btrfs_inode_timespec *ts,
BTRFS_SETGET_STACK_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32); BTRFS_SETGET_STACK_FUNCS(extent_refs, struct btrfs_extent_item, refs, 32);
BTRFS_SETGET_STACK_FUNCS(inode_ref_name_len, struct btrfs_inode_ref,
name_len, 16);
BTRFS_SETGET_STACK_FUNCS(ref_root, struct btrfs_extent_ref, root, 64); BTRFS_SETGET_STACK_FUNCS(ref_root, struct btrfs_extent_ref, root, 64);
BTRFS_SETGET_STACK_FUNCS(ref_generation, struct btrfs_extent_ref, BTRFS_SETGET_STACK_FUNCS(ref_generation, struct btrfs_extent_ref,
generation, 64); generation, 64);

23
print-tree.c
View File

@ -45,6 +45,24 @@ static int print_dir_item(struct btrfs_item *item,
} }
return 0; return 0;
} }
static int print_inode_ref_item(struct btrfs_item *item,
struct btrfs_inode_ref *ref)
{
u32 total;
u32 cur = 0;
u32 len;
total = btrfs_item_size(item);
while(cur < total) {
len = btrfs_inode_ref_name_len(ref);
printf("\t\tinode ref name: %.*s\n", len, (char *)(ref + 1));
len += sizeof(*ref);
ref = (struct btrfs_inode_ref *)((char *)ref + len);
cur += len;
}
return 0;
}
void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l) void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
{ {
int i; int i;
@ -58,6 +76,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
struct btrfs_csum_item *ci; struct btrfs_csum_item *ci;
struct btrfs_block_group_item *bi; struct btrfs_block_group_item *bi;
struct btrfs_extent_ref *ref; struct btrfs_extent_ref *ref;
struct btrfs_inode_ref *iref;
u32 type; u32 type;
printf("leaf %llu ptrs %d free space %d generation %llu owner %llu\n", printf("leaf %llu ptrs %d free space %d generation %llu owner %llu\n",
@ -86,6 +105,10 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
btrfs_inode_mode(ii), btrfs_inode_mode(ii),
btrfs_inode_nlink(ii)); btrfs_inode_nlink(ii));
break; break;
case BTRFS_INODE_REF_KEY:
iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
print_inode_ref_item(l->items + i, iref);
break;
case BTRFS_DIR_ITEM_KEY: case BTRFS_DIR_ITEM_KEY:
di = btrfs_item_ptr(l, i, struct btrfs_dir_item); di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
print_dir_item(l->items + i, di); print_dir_item(l->items + i, di);