NEX-16818 Add fksmbcl development tool
NEX-17264 SMB client test tp_smbutil_013 fails after NEX-14666
Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Matt Barden <matt.barden@nexenta.com>
and: (fix ref leaks)

@@ -18,17 +18,23 @@
  *
  * CDDL HEADER END
  */
 
 /*
- * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
+ * Copyright 2017 Nexenta Systems, Inc.  All rights reserved.
  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#include <sys/mdb_modapi.h>
 #include <sys/types.h>
+#include <sys/mdb_modapi.h>
+
+#ifdef  _USER
+#include "../genunix/avl.h"
+#define _FAKE_KERNEL
+#endif
+
 #include <sys/refstr_impl.h>
 #include <sys/vnode.h>
 #include <sys/vfs.h>
 
 #include <smbfs/smbfs.h>

@@ -147,11 +153,11 @@
             NULL) != argc) {
                 return (DCMD_USAGE);
         }
 
         if (!(flags & DCMD_ADDRSPEC)) {
-                if (mdb_walk("genunix`vfs", smbfs_vfs_cb, cbd)
+                if (mdb_walk("vfs", smbfs_vfs_cb, cbd)
                     == -1) {
                         mdb_warn("can't walk smbfs vfs");
                         return (DCMD_ERR);
                 }
                 return (DCMD_OK);

@@ -236,11 +242,11 @@
                 mdb_warn("expect an smbmntinfo_t addr");
                 return (DCMD_USAGE);
         }
         addr += OFFSETOF(smbmntinfo_t, smi_hash_avl);
 
-        if (mdb_pwalk("genunix`avl", smbfs_node_cb, cbd, addr) == -1) {
+        if (mdb_pwalk("avl", smbfs_node_cb, cbd, addr) == -1) {
                 mdb_warn("cannot walk smbfs nodes");
                 return (DCMD_ERR);
         }
 
         return (DCMD_OK);

@@ -265,14 +271,63 @@
                 smbfs_node_dcmd, smbfs_node_help
         },
         {NULL}
 };
 
+#ifdef _USER
+/*
+ * Sadly, can't just compile ../genunix/vfs.c with this since
+ * it has become a catch-all for FS-specific headers etc.
+ */
+int
+vfs_walk_init(mdb_walk_state_t *wsp)
+{
+        if (wsp->walk_addr == NULL &&
+            mdb_readvar(&wsp->walk_addr, "rootvfs") == -1) {
+                mdb_warn("failed to read 'rootvfs'");
+                return (WALK_ERR);
+        }
+
+        wsp->walk_data = (void *)wsp->walk_addr;
+        return (WALK_NEXT);
+}
+
+int
+vfs_walk_step(mdb_walk_state_t *wsp)
+{
+        vfs_t vfs;
+        int status;
+
+        if (mdb_vread(&vfs, sizeof (vfs), wsp->walk_addr) == -1) {
+                mdb_warn("failed to read vfs_t at %p", wsp->walk_addr);
+                return (WALK_DONE);
+        }
+
+        status = wsp->walk_callback(wsp->walk_addr, &vfs, wsp->walk_cbdata);
+
+        if (vfs.vfs_next == wsp->walk_data)
+                return (WALK_DONE);
+
+        wsp->walk_addr = (uintptr_t)vfs.vfs_next;
+
+        return (status);
+}
+#endif  // _USER
+
 static const mdb_walker_t walkers[] = {
+#ifdef  _USER
+        /* from avl.c */
+        { AVL_WALK_NAME, AVL_WALK_DESC,
+                avl_walk_init, avl_walk_step, avl_walk_fini },
+        /* from vfs.c */
+        { "vfs", "walk file system list",
+                vfs_walk_init, vfs_walk_step },
+#endif  // _USER
         {NULL}
 };
 
+
 static const mdb_modinfo_t modinfo = {
         MDB_API_VERSION,
         dcmds,
         walkers
 };