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Add printing link backref items

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Signed-off-by: Zach Brown <zab@versity.com>
This commit is contained in:
Zach Brown
2017-02-03 13:27:26 -08:00
parent acda5a3bf1
commit 16da3c182a
2 changed files with 19 additions and 16 deletions
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21
utils/src/format.h
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@@ -265,6 +265,14 @@ struct scoutfs_readdir_key {
__be64 pos;
} __packed;
/* value is empty */
struct scoutfs_link_backref_key {
__u8 type;
__be64 ino;
__be64 dir_ino;
__u8 name[0];
} __packed;
/* no value */
struct scoutfs_orphan_key {
__u8 type;
@@ -479,17 +487,8 @@ struct scoutfs_extent {
#define SCOUTFS_EXTENT_FLAG_OFFLINE (1 << 0)
/*
* link backrefs give us a way to find all the hard links that refer
* to a target inode. They're stored at an offset determined by an
* advancing counter in their inode.
*/
struct scoutfs_link_backref {
__le64 ino;
__le64 offset;
} __packed;
/* ino_path can search for backref items with a null term */
#define SCOUTFS_MAX_KEY_SIZE \
offsetof(struct scoutfs_dirent_key, name[SCOUTFS_NAME_LEN])
offsetof(struct scoutfs_link_backref_key, name[SCOUTFS_NAME_LEN + 1])
#endif

14
utils/src/print.c
View File

@@ -179,14 +179,17 @@ static void print_data(void *key, int key_len, void *val, int val_len)
be64_to_cpu(dat->ino), be64_to_cpu(dat->block));
}
#if 0
static void print_link_backref(struct scoutfs_link_backref *lref,
unsigned int val_len)
static void print_link_backref(void *key, int key_len, void *val, int val_len)
{
printf(" lref: ino: %llu offset: %llu\n",
le64_to_cpu(lref->ino), le64_to_cpu(lref->offset));
struct scoutfs_link_backref_key *lbkey = key;
unsigned int name_len = key_len - sizeof(*lbkey);
u8 *name = global_printable_name(lbkey->name, name_len);
printf(" lbref: ino: %llu dir_ino %llu name %s\n",
be64_to_cpu(lbkey->ino), be64_to_cpu(lbkey->dir_ino), name);
}
#if 0
/* for now show the raw component items not the whole path */
static void print_symlink(char *str, unsigned int val_len)
{
@@ -213,6 +216,7 @@ static print_func_t printers[] = {
[SCOUTFS_ORPHAN_KEY] = print_orphan,
[SCOUTFS_DIRENT_KEY] = print_dirent,
[SCOUTFS_READDIR_KEY] = print_readdir,
[SCOUTFS_LINK_BACKREF_KEY] = print_link_backref,
[SCOUTFS_DATA_KEY] = print_data,
};