From: Marcos Paulo de Souza <mpdesouza@xxxxxxxx>
This ioctl will make possible to delete a subvolume/snapshot by using
the subvolume id.
Signed-off-by: Marcos Paulo de Souza <mpdesouza@xxxxxxxx>
---
Changes from v1:
* Moved subvolid member to the same union containing name and devid (David)
* Changed BTRFS_SUBVOL_DELETE_BY_ID to BTRFS_SUBVOL_SPEC_BY_ID (David,
Christoph)
ioctl.h | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/ioctl.h b/ioctl.h
index 1d53c100..1a2882df 100644
--- a/ioctl.h
+++ b/ioctl.h
@@ -53,12 +53,14 @@ BUILD_ASSERT(sizeof(struct btrfs_ioctl_vol_args) == 4096);
#define BTRFS_SUBVOL_RDONLY (1ULL << 1)
#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
#define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3)
+#define BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4)
#define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \
(BTRFS_SUBVOL_CREATE_ASYNC | \
BTRFS_SUBVOL_RDONLY | \
BTRFS_SUBVOL_QGROUP_INHERIT | \
- BTRFS_DEVICE_SPEC_BY_ID)
+ BTRFS_DEVICE_SPEC_BY_ID | \
+ BTRFS_SUBVOL_SPEC_BY_ID)
#define BTRFS_FSID_SIZE 16
#define BTRFS_UUID_SIZE 16
@@ -104,6 +106,7 @@ struct btrfs_ioctl_vol_args_v2 {
};
union {
char name[BTRFS_SUBVOL_NAME_MAX + 1];
+ __u64 subvolid;
__u64 devid;
};
};
@@ -940,6 +943,9 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code)
struct btrfs_ioctl_get_subvol_rootref_args)
#define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \
struct btrfs_ioctl_ino_lookup_user_args)
+#define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \
+ struct btrfs_ioctl_vol_args_v2)
+
#ifdef __cplusplus
}
#endif
--
2.24.0
