Btrfs: add qgroup inheritance

[deliverable/linux.git] / fs / btrfs / ioctl.h

diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h
index 4f69028a68c486268bf5bcfc097a5412dbdd2ad0..cdda57f1c240cefd94422179d17856e0b1e0050a 100644 (file)
--- a/fs/btrfs/ioctl.h
+++ b/fs/btrfs/ioctl.h
@@ -32,15 +32,46 @@ struct btrfs_ioctl_vol_args {
 
 #define BTRFS_SUBVOL_CREATE_ASYNC      (1ULL << 0)
 #define BTRFS_SUBVOL_RDONLY            (1ULL << 1)
+#define BTRFS_SUBVOL_QGROUP_INHERIT    (1ULL << 2)
 #define BTRFS_FSID_SIZE 16
 #define BTRFS_UUID_SIZE 16
 
+#define BTRFS_QGROUP_INHERIT_SET_LIMITS        (1ULL << 0)
+
+struct btrfs_qgroup_limit {
+       __u64   flags;
+       __u64   max_rfer;
+       __u64   max_excl;
+       __u64   rsv_rfer;
+       __u64   rsv_excl;
+};
+
+struct btrfs_qgroup_inherit {
+       __u64   flags;
+       __u64   num_qgroups;
+       __u64   num_ref_copies;
+       __u64   num_excl_copies;
+       struct btrfs_qgroup_limit lim;
+       __u64   qgroups[0];
+};
+
+struct btrfs_ioctl_qgroup_limit_args {
+       __u64   qgroupid;
+       struct btrfs_qgroup_limit lim;
+};
+
 #define BTRFS_SUBVOL_NAME_MAX 4039
 struct btrfs_ioctl_vol_args_v2 {
        __s64 fd;
        __u64 transid;
        __u64 flags;
-       __u64 unused[4];
+       union {
+               struct {
+                       __u64 size;
+                       struct btrfs_qgroup_inherit __user *qgroup_inherit;
+               };
+               __u64 unused[4];
+       };
        char name[BTRFS_SUBVOL_NAME_MAX + 1];
 };
 
@@ -252,7 +283,7 @@ struct btrfs_data_container {
 
 struct btrfs_ioctl_ino_path_args {
        __u64                           inum;           /* in */
-       __u32                           size;           /* in */
+       __u64                           size;           /* in */
        __u64                           reserved[4];
        /* struct btrfs_data_container  *fspath;           out */
        __u64                           fspath;         /* out */
@@ -260,12 +291,60 @@ struct btrfs_ioctl_ino_path_args {
 
 struct btrfs_ioctl_logical_ino_args {
        __u64                           logical;        /* in */
-       __u32                           size;           /* in */
+       __u64                           size;           /* in */
        __u64                           reserved[4];
        /* struct btrfs_data_container  *inodes;        out   */
        __u64                           inodes;
 };
 
+enum btrfs_dev_stat_values {
+       /* disk I/O failure stats */
+       BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */
+       BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */
+       BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
+
+       /* stats for indirect indications for I/O failures */
+       BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or
+                                        * contents is illegal: this is an
+                                        * indication that the block was damaged
+                                        * during read or write, or written to
+                                        * wrong location or read from wrong
+                                        * location */
+       BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not
+                                        * been written */
+
+       BTRFS_DEV_STAT_VALUES_MAX
+};
+
+struct btrfs_ioctl_get_dev_stats {
+       __u64 devid;                            /* in */
+       __u64 nr_items;                         /* in/out */
+
+       /* out values: */
+       __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
+
+       __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX]; /* pad to 1k */
+};
+
+#define BTRFS_QUOTA_CTL_ENABLE 1
+#define BTRFS_QUOTA_CTL_DISABLE        2
+#define BTRFS_QUOTA_CTL_RESCAN 3
+struct btrfs_ioctl_quota_ctl_args {
+       __u64 cmd;
+       __u64 status;
+};
+
+struct btrfs_ioctl_qgroup_assign_args {
+       __u64 assign;
+       __u64 src;
+       __u64 dst;
+};
+
+struct btrfs_ioctl_qgroup_create_args {
+       __u64 create;
+       __u64 qgroupid;
+};
+
 #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \
                                   struct btrfs_ioctl_vol_args)
 #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \
@@ -310,7 +389,9 @@ struct btrfs_ioctl_logical_ino_args {
 #define BTRFS_IOC_WAIT_SYNC  _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)
 #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \
                                   struct btrfs_ioctl_vol_args_v2)
-#define BTRFS_IOC_SUBVOL_GETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 25, __u64)
+#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \
+                                  struct btrfs_ioctl_vol_args_v2)
+#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)
 #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)
 #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \
                              struct btrfs_ioctl_scrub_args)
@@ -330,5 +411,17 @@ struct btrfs_ioctl_logical_ino_args {
                                        struct btrfs_ioctl_ino_path_args)
 #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \
                                        struct btrfs_ioctl_ino_path_args)
-
+#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \
+                                     struct btrfs_ioctl_get_dev_stats)
+#define BTRFS_IOC_GET_AND_RESET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 53, \
+                                       struct btrfs_ioctl_get_dev_stats)
+
+#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \
+                              struct btrfs_ioctl_quota_ctl_args)
+#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \
+                              struct btrfs_ioctl_qgroup_assign_args)
+#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \
+                              struct btrfs_ioctl_qgroup_create_args)
+#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \
+                              struct btrfs_ioctl_qgroup_limit_args)
 #endif