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btrfs-progs: define IOC_SNAP_DESTROY_V2

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Add new ioctl to allow extended arguments to be passed to subvolume
deletion ioctl. This will be used for deletion specified by subvolume
id.

Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Marcos Paulo de Souza 2020-02-07 10:10:25 -03:00 committed by David Sterba
parent 11f1fcc1e3
commit f9fb36787a
1 changed files with 7 additions and 1 deletions
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8
ioctl.h
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@ -53,12 +53,14 @@ BUILD_ASSERT(sizeof(struct btrfs_ioctl_vol_args) == 4096);
#define BTRFS_SUBVOL_RDONLY (1ULL << 1) #define BTRFS_SUBVOL_RDONLY (1ULL << 1)
#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
#define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3) #define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3)
#define BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4)
#define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \ #define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \
(BTRFS_SUBVOL_CREATE_ASYNC | \ (BTRFS_SUBVOL_CREATE_ASYNC | \
BTRFS_SUBVOL_RDONLY | \ BTRFS_SUBVOL_RDONLY | \
BTRFS_SUBVOL_QGROUP_INHERIT | \ 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_FSID_SIZE 16
#define BTRFS_UUID_SIZE 16 #define BTRFS_UUID_SIZE 16
@ -105,6 +107,7 @@ struct btrfs_ioctl_vol_args_v2 {
union { union {
char name[BTRFS_SUBVOL_NAME_MAX + 1]; char name[BTRFS_SUBVOL_NAME_MAX + 1];
__u64 devid; __u64 devid;
__u64 subvolid;
}; };
}; };
BUILD_ASSERT(sizeof(struct btrfs_ioctl_vol_args_v2) == 4096); BUILD_ASSERT(sizeof(struct btrfs_ioctl_vol_args_v2) == 4096);
@ -940,6 +943,9 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code)
struct btrfs_ioctl_get_subvol_rootref_args) struct btrfs_ioctl_get_subvol_rootref_args)
#define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \ #define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \
struct btrfs_ioctl_ino_lookup_user_args) 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 #ifdef __cplusplus
} }
#endif #endif