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-rw-r--r--fs/xfs/libxfs/xfs_fs.h158
1 files changed, 156 insertions, 2 deletions
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index ca1b17d014..454b63ef72 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -239,6 +239,8 @@ typedef struct xfs_fsop_resblks {
#define XFS_FSOP_GEOM_FLAGS_BIGTIME (1 << 21) /* 64-bit nsec timestamps */
#define XFS_FSOP_GEOM_FLAGS_INOBTCNT (1 << 22) /* inobt btree counter */
#define XFS_FSOP_GEOM_FLAGS_NREXT64 (1 << 23) /* large extent counters */
+#define XFS_FSOP_GEOM_FLAGS_EXCHANGE_RANGE (1 << 24) /* exchange range */
+#define XFS_FSOP_GEOM_FLAGS_PARENT (1 << 25) /* linux parent pointers */
/*
* Minimum and maximum sizes need for growth checks.
@@ -409,6 +411,7 @@ struct xfs_bulkstat {
#define XFS_BS_SICK_XATTR (1 << 5) /* extended attributes */
#define XFS_BS_SICK_SYMLINK (1 << 6) /* symbolic link remote target */
#define XFS_BS_SICK_PARENT (1 << 7) /* parent pointers */
+#define XFS_BS_SICK_DIRTREE (1 << 8) /* directory tree structure */
/*
* Project quota id helpers (previously projid was 16bit only
@@ -632,7 +635,9 @@ typedef struct xfs_fsop_attrmulti_handlereq {
/*
* per machine unique filesystem identifier types.
*/
-typedef struct { __u32 val[2]; } xfs_fsid_t; /* file system id type */
+typedef struct xfs_fsid {
+ __u32 val[2]; /* file system id type */
+} xfs_fsid_t;
typedef struct xfs_fid {
__u16 fid_len; /* length of remainder */
@@ -715,9 +720,19 @@ struct xfs_scrub_metadata {
#define XFS_SCRUB_TYPE_QUOTACHECK 25 /* quota counters */
#define XFS_SCRUB_TYPE_NLINKS 26 /* inode link counts */
#define XFS_SCRUB_TYPE_HEALTHY 27 /* everything checked out ok */
+#define XFS_SCRUB_TYPE_DIRTREE 28 /* directory tree structure */
/* Number of scrub subcommands. */
-#define XFS_SCRUB_TYPE_NR 28
+#define XFS_SCRUB_TYPE_NR 29
+
+/*
+ * This special type code only applies to the vectored scrub implementation.
+ *
+ * If any of the previous scrub vectors recorded runtime errors or have
+ * sv_flags bits set that match the OFLAG bits in the barrier vector's
+ * sv_flags, set the barrier's sv_ret to -ECANCELED and return to userspace.
+ */
+#define XFS_SCRUB_TYPE_BARRIER (0xFFFFFFFF)
/* i: Repair this metadata. */
#define XFS_SCRUB_IFLAG_REPAIR (1u << 0)
@@ -763,6 +778,29 @@ struct xfs_scrub_metadata {
XFS_SCRUB_OFLAG_NO_REPAIR_NEEDED)
#define XFS_SCRUB_FLAGS_ALL (XFS_SCRUB_FLAGS_IN | XFS_SCRUB_FLAGS_OUT)
+/* Vectored scrub calls to reduce the number of kernel transitions. */
+
+struct xfs_scrub_vec {
+ __u32 sv_type; /* XFS_SCRUB_TYPE_* */
+ __u32 sv_flags; /* XFS_SCRUB_FLAGS_* */
+ __s32 sv_ret; /* 0 or a negative error code */
+ __u32 sv_reserved; /* must be zero */
+};
+
+/* Vectored metadata scrub control structure. */
+struct xfs_scrub_vec_head {
+ __u64 svh_ino; /* inode number. */
+ __u32 svh_gen; /* inode generation. */
+ __u32 svh_agno; /* ag number. */
+ __u32 svh_flags; /* XFS_SCRUB_VEC_FLAGS_* */
+ __u16 svh_rest_us; /* wait this much time between vector items */
+ __u16 svh_nr; /* number of svh_vectors */
+ __u64 svh_reserved; /* must be zero */
+ __u64 svh_vectors; /* pointer to buffer of xfs_scrub_vec */
+};
+
+#define XFS_SCRUB_VEC_FLAGS_ALL (0)
+
/*
* ioctl limits
*/
@@ -772,6 +810,118 @@ struct xfs_scrub_metadata {
# define XFS_XATTR_LIST_MAX 65536
#endif
+/*
+ * Exchange part of file1 with part of the file that this ioctl that is being
+ * called against (which we'll call file2). Filesystems must be able to
+ * restart and complete the operation even after the system goes down.
+ */
+struct xfs_exchange_range {
+ __s32 file1_fd;
+ __u32 pad; /* must be zeroes */
+ __u64 file1_offset; /* file1 offset, bytes */
+ __u64 file2_offset; /* file2 offset, bytes */
+ __u64 length; /* bytes to exchange */
+
+ __u64 flags; /* see XFS_EXCHANGE_RANGE_* below */
+};
+
+/*
+ * Exchange file data all the way to the ends of both files, and then exchange
+ * the file sizes. This flag can be used to replace a file's contents with a
+ * different amount of data. length will be ignored.
+ */
+#define XFS_EXCHANGE_RANGE_TO_EOF (1ULL << 0)
+
+/* Flush all changes in file data and file metadata to disk before returning. */
+#define XFS_EXCHANGE_RANGE_DSYNC (1ULL << 1)
+
+/* Dry run; do all the parameter verification but do not change anything. */
+#define XFS_EXCHANGE_RANGE_DRY_RUN (1ULL << 2)
+
+/*
+ * Exchange only the parts of the two files where the file allocation units
+ * mapped to file1's range have been written to. This can accelerate
+ * scatter-gather atomic writes with a temp file if all writes are aligned to
+ * the file allocation unit.
+ */
+#define XFS_EXCHANGE_RANGE_FILE1_WRITTEN (1ULL << 3)
+
+#define XFS_EXCHANGE_RANGE_ALL_FLAGS (XFS_EXCHANGE_RANGE_TO_EOF | \
+ XFS_EXCHANGE_RANGE_DSYNC | \
+ XFS_EXCHANGE_RANGE_DRY_RUN | \
+ XFS_EXCHANGE_RANGE_FILE1_WRITTEN)
+
+/* Iterating parent pointers of files. */
+
+/* target was the root directory */
+#define XFS_GETPARENTS_OFLAG_ROOT (1U << 0)
+
+/* Cursor is done iterating pptrs */
+#define XFS_GETPARENTS_OFLAG_DONE (1U << 1)
+
+#define XFS_GETPARENTS_OFLAGS_ALL (XFS_GETPARENTS_OFLAG_ROOT | \
+ XFS_GETPARENTS_OFLAG_DONE)
+
+#define XFS_GETPARENTS_IFLAGS_ALL (0)
+
+struct xfs_getparents_rec {
+ struct xfs_handle gpr_parent; /* Handle to parent */
+ __u32 gpr_reclen; /* Length of entire record */
+ __u32 gpr_reserved; /* zero */
+ char gpr_name[]; /* Null-terminated filename */
+};
+
+/* Iterate through this file's directory parent pointers */
+struct xfs_getparents {
+ /*
+ * Structure to track progress in iterating the parent pointers.
+ * Must be initialized to zeroes before the first ioctl call, and
+ * not touched by callers after that.
+ */
+ struct xfs_attrlist_cursor gp_cursor;
+
+ /* Input flags: XFS_GETPARENTS_IFLAG* */
+ __u16 gp_iflags;
+
+ /* Output flags: XFS_GETPARENTS_OFLAG* */
+ __u16 gp_oflags;
+
+ /* Size of the gp_buffer in bytes */
+ __u32 gp_bufsize;
+
+ /* Must be set to zero */
+ __u64 gp_reserved;
+
+ /* Pointer to a buffer in which to place xfs_getparents_rec */
+ __u64 gp_buffer;
+};
+
+static inline struct xfs_getparents_rec *
+xfs_getparents_first_rec(struct xfs_getparents *gp)
+{
+ return (struct xfs_getparents_rec *)(uintptr_t)gp->gp_buffer;
+}
+
+static inline struct xfs_getparents_rec *
+xfs_getparents_next_rec(struct xfs_getparents *gp,
+ struct xfs_getparents_rec *gpr)
+{
+ void *next = ((void *)gpr + gpr->gpr_reclen);
+ void *end = (void *)(uintptr_t)(gp->gp_buffer + gp->gp_bufsize);
+
+ if (next >= end)
+ return NULL;
+
+ return next;
+}
+
+/* Iterate through this file handle's directory parent pointers. */
+struct xfs_getparents_by_handle {
+ /* Handle to file whose parents we want. */
+ struct xfs_handle gph_handle;
+
+ struct xfs_getparents gph_request;
+};
/*
* ioctl commands that are used by Linux filesystems
@@ -808,6 +958,9 @@ struct xfs_scrub_metadata {
/* XFS_IOC_GETFSMAP ------ hoisted 59 */
#define XFS_IOC_SCRUB_METADATA _IOWR('X', 60, struct xfs_scrub_metadata)
#define XFS_IOC_AG_GEOMETRY _IOWR('X', 61, struct xfs_ag_geometry)
+#define XFS_IOC_GETPARENTS _IOWR('X', 62, struct xfs_getparents)
+#define XFS_IOC_GETPARENTS_BY_HANDLE _IOWR('X', 63, struct xfs_getparents_by_handle)
+#define XFS_IOC_SCRUBV_METADATA _IOWR('X', 64, struct xfs_scrub_vec_head)
/*
* ioctl commands that replace IRIX syssgi()'s
@@ -843,6 +996,7 @@ struct xfs_scrub_metadata {
#define XFS_IOC_FSGEOMETRY _IOR ('X', 126, struct xfs_fsop_geom)
#define XFS_IOC_BULKSTAT _IOR ('X', 127, struct xfs_bulkstat_req)
#define XFS_IOC_INUMBERS _IOR ('X', 128, struct xfs_inumbers_req)
+#define XFS_IOC_EXCHANGE_RANGE _IOW ('X', 129, struct xfs_exchange_range)
/* XFS_IOC_GETFSUUID ---------- deprecated 140 */