+#include <sys/mount.h>
+
+#ifdef XNU_KERNEL_PRIVATE
+
+/* Userland structs for namespace handler */
+typedef struct user64_namespace_handler_info {
+ user64_addr_t token;
+ user64_addr_t flags;
+ user64_addr_t fdptr;
+} user64_namespace_handler_info;
+
+typedef struct user32_namespace_handler_info {
+ user32_addr_t token;
+ user32_addr_t flags;
+ user32_addr_t fdptr;
+} user32_namespace_handler_info;
+
+
+/* Kernel-internal of namespace handler info */
+typedef struct namespace_handler_info {
+ user_addr_t token;
+ user_addr_t flags;
+ user_addr_t fdptr;
+} namespace_handler_info;
+
+
+/* Userland structs for extended namespace handler */
+typedef struct user64_namespace_handler_info_ext {
+ user64_addr_t token;
+ user64_addr_t flags;
+ user64_addr_t fdptr;
+ user64_addr_t infoptr;
+} user64_namespace_handler_info_ext;
+
+typedef struct user32_namespace_handler_info_ext {
+ user32_addr_t token;
+ user32_addr_t flags;
+ user32_addr_t fdptr;
+ user32_addr_t infoptr;
+} user32_namespace_handler_info_ext;
+
+
+/* Kernel-internal of extended namespace handler */
+typedef struct namespace_handler_info_ext {
+ user_addr_t token;
+ user_addr_t flags;
+ user_addr_t fdptr;
+ user_addr_t infoptr;
+} namespace_handler_info_ext;
+
+/* Size-Augmented namespace_handler_info */
+/* 64 bit userland*/
+typedef struct user64_namespace_handler_data {
+ user64_addr_t token;
+ user64_addr_t flags;
+ user64_addr_t fdptr;
+ user64_addr_t infoptr;
+ user64_addr_t objid;
+ user64_addr_t reserved1;
+ user64_addr_t reserved2;
+ user64_addr_t reserved3;
+} user64_namespace_handler_data;
+
+/*32 bit userland*/
+typedef struct user32_namespace_handler_data {
+ user32_addr_t token;
+ user32_addr_t flags;
+ user32_addr_t fdptr;
+ user32_addr_t infoptr;
+ user32_addr_t objid;
+ user32_addr_t reserved1;
+ user32_addr_t reserved2;
+ user32_addr_t reserved3;
+} user32_namespace_handler_data;
+
+/* kernel-internal */
+typedef struct namespace_handler_data {
+ user_addr_t token;
+ user_addr_t flags;
+ user_addr_t fdptr;
+ user_addr_t infoptr;
+ user_addr_t objid;
+ user_addr_t reserved1;
+ user_addr_t reserved2;
+ user_addr_t reserved3;
+} namespace_handler_data;
+
+
+extern int resolve_nspace_item_ext(struct vnode *vp, uint64_t op, void *arg);
+extern int get_nspace_item_status(struct vnode *vp, int32_t *status);
+
+#else
+
+typedef struct namespace_handler_info {
+ int32_t *token;
+ int64_t *flags;
+ int32_t *fdptr;
+} namespace_handler_info;
+
+typedef struct namespace_handler_info_ext {
+ int32_t *token;
+ int64_t *flags;
+ int32_t *fdptr;
+ int64_t *infoptr; // for snapshot write events, the kernel puts an offset/length pair here
+} namespace_handler_info_ext;
+
+typedef struct namespace_handler_data {
+ int32_t *token;
+ int64_t *flags;
+ int32_t *fdptr;
+ int64_t *infoptr; // for snapshot write events, the kernel puts an offset/length pair here
+ int64_t *objid;
+ uint32_t *reserved1;
+ uint32_t *reserved2;
+ uint32_t *reserved3;
+} namespace_handler_data;
+
+#endif /* XNU_KERNEL_PRIVATE */
+
+#ifdef KERNEL_PRIVATE
+
+#define NSPACE_REARM_NO_ARG ((void *)1)
+int resolve_nspace_item(struct vnode *vp, uint64_t op);
+int nspace_snapshot_event(vnode_t vp, time_t ctime, uint64_t op_type, void *arg);
+
+#endif // defined(KERNEL_PRIVATE)
+
+#define NAMESPACE_HANDLER_READ_OP 0x0001
+#define NAMESPACE_HANDLER_WRITE_OP 0x0002
+#define NAMESPACE_HANDLER_DELETE_OP 0x0004
+#define NAMESPACE_HANDLER_TRUNCATE_OP 0x0008
+#define NAMESPACE_HANDLER_RENAME_OP 0x0010
+#define NAMESPACE_HANDLER_METADATA_WRITE_OP 0x0020
+#define NAMESPACE_HANDLER_METADATA_DELETE_OP 0x0040
+#define NAMESPACE_HANDLER_METADATA_MOD 0x0080
+// #define NAMESPACE_HANDLER_OP_DO_NOT_USE 0x0100 // SNAPSHOT_EVENT uses this value
+#define NAMESPACE_HANDLER_LINK_CREATE 0x0200
+#define NAMESPACE_HANDLER_RENAME_SUCCESS_OP 0x0400
+#define NAMESPACE_HANDLER_RENAME_FAILED_OP 0x0800
+
+#define NAMESPACE_HANDLER_NSPACE_EVENT 0x1000
+#define NAMESPACE_HANDLER_SNAPSHOT_EVENT 0x0100
+#define NAMESPACE_HANDLER_TRACK_EVENT 0x2000
+
+#define NAMESPACE_HANDLER_EVENT_TYPE_MASK (NAMESPACE_HANDLER_NSPACE_EVENT | NAMESPACE_HANDLER_SNAPSHOT_EVENT | NAMESPACE_HANDLER_TRACK_EVENT)
+
+#define DATALESS_CMPFS_TYPE 0x80000001
+
+
+typedef int32_t nspace_handler_info[2];
+typedef char fstypename_t[MFSTYPENAMELEN];
+
+#ifdef KERNEL
+
+typedef struct user64_package_ext_info {
+ user64_addr_t strings;
+ uint32_t num_entries;
+ uint32_t max_width;
+} user64_package_ext_info;
+
+typedef struct user32_package_ext_info {
+ user32_addr_t strings;
+ uint32_t num_entries;
+ uint32_t max_width;
+} user32_package_ext_info;
+
+#endif // KERNEL
+
+typedef struct package_ext_info {
+ const char *strings;
+ uint32_t num_entries;
+ uint32_t max_width;
+} package_ext_info;
+
+#define FSCTL_SYNC_FULLSYNC (1<<0) /* Flush the data fully to disk, if supported by the filesystem */
+#define FSCTL_SYNC_WAIT (1<<1) /* Wait for the sync to complete */
+
+
+#define FSIOC_SYNC_VOLUME _IOW('A', 1, uint32_t)
+#define FSCTL_SYNC_VOLUME IOCBASECMD(FSIOC_SYNC_VOLUME)
+
+#define FSIOC_SET_PACKAGE_EXTS _IOW('A', 2, struct package_ext_info)
+#define FSCTL_SET_PACKAGE_EXTS IOCBASECMD(FSIOC_SET_PACKAGE_EXTS)
+
+/* Unsupported - previously FSIOC_WAIT_FOR_SYNC */
+#define FSIOC_UNSUPPORTED _IOR('A', 3, int32_t)
+
+#define FSIOC_NAMESPACE_HANDLER_GET _IOW('A', 4, struct namespace_handler_info)
+#define FSCTL_NAMESPACE_HANDLER_GET IOCBASECMD(FSIOC_NAMESPACE_HANDLER_GET)
+
+#define FSIOC_NAMESPACE_HANDLER_UPDATE _IOW('A', 5, nspace_handler_info)
+#define FSCTL_NAMESPACE_HANDLER_UPDATE IOCBASECMD(FSIOC_NAMESPACE_HANDLER_UPDATE)
+
+#define FSIOC_NAMESPACE_HANDLER_UNBLOCK _IOW('A', 6, nspace_handler_info)
+#define FSCTL_NAMESPACE_HANDLER_UNBLOCK IOCBASECMD(FSIOC_NAMESPACE_HANDLER_UNBLOCK)
+
+#define FSIOC_NAMESPACE_HANDLER_CANCEL _IOW('A', 7, nspace_handler_info)
+#define FSCTL_NAMESPACE_HANDLER_CANCEL IOCBASECMD(FSIOC_NAMESPACE_HANDLER_CANCEL)
+
+#define FSIOC_NAMESPACE_HANDLER_SET_SNAPSHOT_TIME _IOW('A', 8, int32_t)
+#define FSCTL_NAMESPACE_HANDLER_SET_SNAPSHOT_TIME IOCBASECMD(FSIOC_NAMESPACE_HANDLER_SET_SNAPSHOT_TIME)
+
+#define FSIOC_OLD_SNAPSHOT_HANDLER_GET _IOW('A', 9, struct namespace_handler_info)
+#define FSCTL_OLD_SNAPSHOT_HANDLER_GET IOCBASECMD(FSIOC_OLD_SNAPSHOT_HANDLER_GET)
+
+#define FSIOC_SET_FSTYPENAME_OVERRIDE _IOW('A', 10, fstypename_t)
+#define FSCTL_SET_FSTYPENAME_OVERRIDE IOCBASECMD(FSIOC_SET_FSTYPENAME_OVERRIDE)
+
+#define FSIOC_NAMESPACE_ALLOW_DMG_SNAPSHOT_EVENTS _IOW('A', 11, int32_t)
+#define FSCTL_NAMESPACE_ALLOW_DMG_SNAPSHOT_EVENTS IOCBASECMD(FSIOC_NAMESPACE_ALLOW_DMG_SNAPSHOT_EVENTS)
+
+/* 12 was used for TRACKED_HANDLER_GET which has now been removed
+ as it is no longer used. */
+
+#define FSIOC_SNAPSHOT_HANDLER_GET_EXT _IOW('A', 13, struct namespace_handler_info_ext)
+#define FSCTL_SNAPSHOT_HANDLER_GET_EXT IOCBASECMD(FSIOC_SNAPSHOT_HANDLER_GET_EXT)
+
+/* 14 was used for NAMESPACE_HANDLER_GETDATA which has now been
+ removed as it is no longer used. */
+
+#define FSIOC_ROUTEFS_SETROUTEID _IO('A', 15)
+#define FSCTL_ROUTEFS_SETROUTEID IOCBASECMD(FSIOC_ROUTEFS_SETROUTEID)
+
+//
+// IO commands 16 and 17 are currently unused
+//
+
+//
+// Spotlight and fseventsd use these fsctl()'s to find out
+// the mount time of a volume and the last time it was
+// unmounted. Both HFS and ZFS support these calls.
+//
+// User space code should pass the "_IOC_" macros while the
+// kernel should test for the "_FSCTL_" variant of the macro
+// in its vnop_ioctl function.
+//
+// NOTE: the values for these defines should _not_ be changed
+// or else it will break binary compatibility with mds
+// and fseventsd.
+//
+#define SPOTLIGHT_IOC_GET_MOUNT_TIME _IOR('h', 18, u_int32_t)
+#define SPOTLIGHT_FSCTL_GET_MOUNT_TIME IOCBASECMD(SPOTLIGHT_IOC_GET_MOUNT_TIME)
+#define SPOTLIGHT_IOC_GET_LAST_MTIME _IOR('h', 19, u_int32_t)
+#define SPOTLIGHT_FSCTL_GET_LAST_MTIME IOCBASECMD(SPOTLIGHT_IOC_GET_LAST_MTIME)
+
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