libzfs: expose zfs_mount_delegation_check

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12116

include/libzfs.h

@@ -826,6 +826,7 @@ extern int zfs_mount(zfs_handle_t *, const char *, int);
 extern int zfs_mount_at(zfs_handle_t *, const char *, int, const char *);
 extern int zfs_unmount(zfs_handle_t *, const char *, int);
 extern int zfs_unmountall(zfs_handle_t *, int);
+extern int zfs_mount_delegation_check(void);
 
 #if defined(__linux__)
 extern int zfs_parse_mount_options(char *mntopts, unsigned long *mntflags,

include/libzfs_impl.h

@@ -30,7 +30,6 @@
 #define	_LIBZFS_IMPL_H
 
 #include <sys/fs/zfs.h>
-#include <sys/spa.h>
 #include <sys/nvpair.h>
 #include <sys/dmu.h>
 #include <sys/zfs_ioctl.h>
@@ -243,7 +242,6 @@ extern proto_table_t proto_table[PROTO_END];
 extern int do_mount(zfs_handle_t *zhp, const char *mntpt, char *opts,
     int flags);
 extern int do_unmount(const char *mntpt, int flags);
-extern int zfs_mount_delegation_check(void);
 extern int zfs_share_proto(zfs_handle_t *zhp, zfs_share_proto_t *proto);
 extern int unshare_one(libzfs_handle_t *hdl, const char *name,
     const char *mountpoint, zfs_share_proto_t proto);