Revert root_redirect :(

This reverts commit 31fc46ded69be7438cca2ba2c2b93c1f200165a6.

Change-Id: Ia78618c0e8b25ca65f7c8ae0db1cb9c9b321bad9

19 files changed, 214 insertions, 644 deletions

diff --git a/apps/debug_menu.c b/apps/debug_menu.c
index eae389d049..e75fce6d32 100644
--- a/apps/debug_menu.c
+++ b/apps/debug_menu.c
@@ -2453,21 +2453,16 @@ static bool dbg_boot_data(void)
     simplelist_set_line_count(0);
     crc = crc_32(boot_data.payload, boot_data.length, 0xffffffff);
 #if defined(HAVE_MULTIBOOT)
-    char rootpath[VOL_MAX_LEN+2] = RB_ROOT_CONTENTS_DIR;
     int boot_volume = 0;
-        if(crc == boot_data.crc)
-        {
-            boot_volume = boot_data.boot_volume; /* boot volume contained in uint8_t payload */
-            get_redirect_dir(rootpath, sizeof(rootpath), boot_volume, "", "");
-            rootpath[path_strip_trailing_separators(rootpath,NULL)] = '\0';
-        }
-        simplelist_addline("Boot Volume: <%lu>", boot_volume);
-        simplelist_addline("Root:");
-        simplelist_addline("%s", rootpath);
-        simplelist_addline("");
+    if(crc == boot_data.crc)
+    {
+        boot_volume = boot_data.boot_volume; /* boot volume contained in uint8_t payload */
+    }
+    simplelist_addline("Boot Volume: <%lu>", boot_volume);
+    simplelist_addline("");
 #endif
     simplelist_addline("Bootdata RAW:");
-    if (crc != boot_data.crc) 
+    if (crc != boot_data.crc)
         simplelist_addline("Magic: %.8s", boot_data.magic);
     simplelist_addline("Length: %lu", boot_data.length);
     simplelist_addline("CRC: %lx", boot_data.crc);
diff --git a/firmware/SOURCES b/firmware/SOURCES
index f1c7621244..a68d10ec76 100644
--- a/firmware/SOURCES
+++ b/firmware/SOURCES
@@ -238,7 +238,6 @@ common/dircache.c
 common/pathfuncs.c
 common/fdprintf.c
 common/linked_list.c
-common/rb_namespace.c
 common/strcasecmp.c
 common/strcasestr.c
 common/strnatcmp.c
diff --git a/firmware/common/dir.c b/firmware/common/dir.c
index 85e6ff316b..f89129ae34 100644
--- a/firmware/common/dir.c
+++ b/firmware/common/dir.c
@@ -27,14 +27,17 @@
 #include "dir.h"
 #include "pathfuncs.h"
 #include "fileobj_mgr.h"
-#include "rb_namespace.h"
+#include "dircache_redirect.h"
 
 /* structure used for open directory streams */
 static struct dirstr_desc
 {
     struct filestr_base stream; /* basic stream info (first!) */
-    struct ns_scan_info scan;   /* directory scan cursor */
+    struct dirscan_info scan;   /* directory scan cursor */
     struct dirent       entry;  /* current parsed entry information */
+#ifdef HAVE_MULTIVOLUME
+    int                 volumecounter; /* counter for root volume entries */
+#endif
 } open_streams[MAX_OPEN_DIRS];
 
 /* check and return a struct dirstr_desc* from a DIR* */
@@ -44,7 +47,7 @@ static struct dirstr_desc * get_dirstr(DIR *dirp)
 
     if (!PTR_IN_ARRAY(open_streams, dir, MAX_OPEN_DIRS))
         dir = NULL;
-    else if (dir->stream.flags & (FDO_BUSY|FD_VALID))
+    else if (dir->stream.flags & FDO_BUSY)
         return dir;
 
     int errnum;
@@ -101,6 +104,49 @@ static struct dirstr_desc * alloc_dirstr(void)
     return NULL;
 }
 
+#ifdef HAVE_MULTIVOLUME
+static int readdir_volume_inner(struct dirstr_desc *dir, struct dirent *entry)
+{
+    /* Volumes (secondary file systems) get inserted into the system root
+     * directory. If the path specified volume 0, enumeration will not
+     * include other volumes, but just its own files and directories.
+     *
+     * Fake special directories, which don't really exist, that will get
+     * redirected upon opendir()
+     */
+    while (++dir->volumecounter < NUM_VOLUMES)
+    {
+        /* on the system root */
+        if (!fat_ismounted(dir->volumecounter))
+            continue;
+
+        get_volume_name(dir->volumecounter, entry->d_name);
+        dir->entry.info.attr    = ATTR_MOUNT_POINT;
+        dir->entry.info.size    = 0;
+        dir->entry.info.wrtdate = 0;
+        dir->entry.info.wrttime = 0;
+        return 1;
+    }
+
+    /* do normal directory entry fetching */
+    return 0;
+}
+#endif /* HAVE_MULTIVOLUME */
+
+static inline int readdir_volume(struct dirstr_desc *dir,
+                                 struct dirent *entry)
+{
+#ifdef HAVE_MULTIVOLUME
+    /* fetch virtual volume entries? */
+    if (dir->volumecounter < NUM_VOLUMES)
+        return readdir_volume_inner(dir, entry);
+#endif /* HAVE_MULTIVOLUME */
+
+    /* do normal directory entry fetching */
+    return 0;
+    (void)dir; (void)entry;
+}
+
 
 /** POSIX interface **/
 
@@ -119,13 +165,21 @@ DIR * opendir(const char *dirname)
     if (!dir)
         FILE_ERROR(EMFILE, RC);
 
-    rc = ns_open_stream(dirname, FF_DIR, &dir->stream, &dir->scan);
+    rc = open_stream_internal(dirname, FF_DIR, &dir->stream, NULL);
     if (rc < 0)
     {
         DEBUGF("Open failed: %d\n", rc);
         FILE_ERROR(ERRNO, RC);
     }
 
+#ifdef HAVE_MULTIVOLUME
+    /* volume counter is relevant only to the system root */
+    dir->volumecounter = rc > 1 ? 0 : INT_MAX;
+#endif /* HAVE_MULTIVOLUME */
+
+    fat_rewind(&dir->stream.fatstr);
+    rewinddir_dirent(&dir->scan);
+
     dirp = (DIR *)dir;
 file_error:
     file_internal_unlock_WRITER();
@@ -150,7 +204,7 @@ int closedir(DIR *dirp)
         FILE_ERROR(EBADF, -2);
     }
 
-    rc = ns_close_stream(&dir->stream);
+    rc = close_stream_internal(&dir->stream);
     if (rc < 0)
         FILE_ERROR(ERRNO, rc * 10 - 3);
 
@@ -168,11 +222,16 @@ struct dirent * readdir(DIR *dirp)
 
     struct dirent *res = NULL;
 
-    int rc = ns_readdir_dirent(&dir->stream, &dir->scan, &dir->entry);
+    int rc = readdir_volume(dir, &dir->entry);
+    if (rc == 0)
+    {
+        rc = readdir_dirent(&dir->stream, &dir->scan, &dir->entry);
+        if (rc < 0)
+            FILE_ERROR(EIO, RC);
+    }
+
     if (rc > 0)
         res = &dir->entry;
-    else if (rc < 0)
-        FILE_ERROR(EIO, RC);
 
 file_error:
     RELEASE_DIRSTR(READER, dir);
@@ -199,9 +258,13 @@ int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
     if (!dir)
         FILE_ERROR_RETURN(ERRNO, -1);
 
-    int rc = ns_readdir_dirent(&dir->stream, &dir->scan, entry);
-    if (rc < 0)
-        FILE_ERROR(EIO, rc * 10 - 4);
+    int rc = readdir_volume(dir, entry);
+    if (rc == 0)
+    {
+        rc = readdir_dirent(&dir->stream, &dir->scan, entry);
+        if (rc < 0)
+            FILE_ERROR(EIO, rc * 10 - 4);
+    }
 
 file_error:
     RELEASE_DIRSTR(READER, dir);
@@ -225,7 +288,12 @@ void rewinddir(DIR *dirp)
     if (!dir)
         FILE_ERROR_RETURN(ERRNO);
 
-    ns_dirscan_rewind(&dir->scan);
+    rewinddir_dirent(&dir->scan);
+
+#ifdef HAVE_MULTIVOLUME
+    if (dir->volumecounter != INT_MAX)
+        dir->volumecounter = 0;
+#endif /* HAVE_MULTIVOLUME */
 
     RELEASE_DIRSTR(READER, dir);
 }
diff --git a/firmware/common/dircache.c b/firmware/common/dircache.c
index cc65d2d540..0cdaf1bd4a 100644
--- a/firmware/common/dircache.c
+++ b/firmware/common/dircache.c
@@ -2541,10 +2541,13 @@ static ssize_t get_path_sub(int idx, struct get_path_sub_data *data)
         cename = "";
 
     #ifdef HAVE_MULTIVOLUME
-        /* prepend the volume specifier */
         int volume = IF_MV_VOL(-idx - 1);
-        cename = alloca(VOL_MAX_LEN+1);
-        get_volume_name(volume, cename);
+        if (volume > 0)
+        {
+            /* prepend the volume specifier for volumes > 0 */
+            cename = alloca(VOL_MAX_LEN+1);
+            get_volume_name(volume, cename);
+        }
     #endif /* HAVE_MULTIVOLUME */
 
         data->serialhash = dc_hash_serialnum(get_idx_dcvolp(idx)->serialnum,
diff --git a/firmware/common/disk.c b/firmware/common/disk.c
index 49137286a3..51d033b678 100644
--- a/firmware/common/disk.c
+++ b/firmware/common/disk.c
@@ -30,6 +30,10 @@
 #include "dircache_redirect.h"
 #include "disk.h"
 
+#if defined(HAVE_BOOTDATA) && !defined(SIMULATOR) && !defined(BOOTLOADER)
+#include "bootdata.h"
+#include "crc32.h"
+#endif
 
 #ifndef CONFIG_DEFAULT_PARTNUM
 #define CONFIG_DEFAULT_PARTNUM 0
diff --git a/firmware/common/file.c b/firmware/common/file.c
index 893e475a32..cb918c6eab 100644
--- a/firmware/common/file.c
+++ b/firmware/common/file.c
@@ -28,7 +28,7 @@
 #include "file.h"
 #include "fileobj_mgr.h"
 #include "disk_cache.h"
-#include "rb_namespace.h"
+#include "dircache_redirect.h"
 #include "string-extra.h"
 
 /**
diff --git a/firmware/common/file_internal.c b/firmware/common/file_internal.c
index 45f412e166..fe18f90056 100644
--- a/firmware/common/file_internal.c
+++ b/firmware/common/file_internal.c
@@ -26,7 +26,9 @@
 #include "pathfuncs.h"
 #include "disk_cache.h"
 #include "fileobj_mgr.h"
-#include "rb_namespace.h"
+#include "dir.h"
+#include "dircache_redirect.h"
+#include "dircache.h"
 #include "string-extra.h"
 #include "rbunicode.h"
 
@@ -85,10 +87,9 @@ void file_cache_free(struct filestr_cache *cachep)
 
 /** Stream base APIs **/
 
-static inline void filestr_clear(struct filestr_base *stream,
-                                 unsigned int flags)
+static inline void filestr_clear(struct filestr_base *stream)
 {
-    stream->flags = flags;
+    stream->flags = 0;
     stream->bindp = NULL;
 #if 0
     stream->mtx   = NULL;
@@ -152,7 +153,7 @@ void filestr_discard_cache(struct filestr_base *stream)
 /* Initialize the base descriptor */
 void filestr_base_init(struct filestr_base *stream)
 {
-    filestr_clear(stream, FD_VALID);
+    filestr_clear(stream);
     file_cache_init(&stream->cache);
     stream->cachep = &stream->cache;
 }
@@ -160,7 +161,7 @@ void filestr_base_init(struct filestr_base *stream)
 /* free base descriptor resources */
 void filestr_base_destroy(struct filestr_base *stream)
 {
-    filestr_clear(stream, 0);
+    filestr_clear(stream);
     filestr_free_cache(stream);
 }
 
@@ -292,7 +293,7 @@ struct pathwalk_component
 
 #define WALK_RC_NOT_FOUND    0   /* successfully not found (aid for file creation) */
 #define WALK_RC_FOUND        1   /* found and opened */
-#define WALK_RC_FOUND_ROOT   2   /* found and opened sys root */
+#define WALK_RC_FOUND_ROOT   2   /* found and opened sys/volume root */
 #define WALK_RC_CONT_AT_ROOT 3   /* continue at root level */
 
 /* return another struct pathwalk_component from the pool, or NULL if the
@@ -396,10 +397,10 @@ static int walk_open_info(struct pathwalk *walkp,
 
     /* make open official if not simply probing for presence - must do it here
        or compp->info on stack will get destroyed before it was copied */
-    if (!(callflags & (FF_PROBE|FF_NOFS)))
+    if (!(callflags & FF_PROBE))
         fileop_onopen_internal(stream, &compp->info, callflags);
 
-    return compp->attr == ATTR_SYSTEM_ROOT ? WALK_RC_FOUND_ROOT : WALK_RC_FOUND;
+    return compp->nextp ? WALK_RC_FOUND : WALK_RC_FOUND_ROOT;
 }
 
 /* check the component against the prefix test info */
@@ -506,10 +507,6 @@ walk_path(struct pathwalk *walkp, struct pathwalk_component *compp,
         if (len > MAX_COMPNAME)
             return -ENAMETOOLONG;
 
-        /* no filesystem is mounted here */
-        if (walkp->callflags & FF_NOFS)
-            return -ENOENT;
-
         /* check for "." and ".." */
         if (name[0] == '.')
         {
@@ -578,7 +575,7 @@ int open_stream_internal(const char *path, unsigned int callflags,
         callflags &= ~(FF_INFO | FF_PARENTINFO | FF_CHECKPREFIX);
 
     /* This lets it be passed quietly to directory scanning */
-    stream->flags |= callflags & FF_MASK;
+    stream->flags = callflags & FF_MASK;
 
     struct pathwalk walk;
     walk.path      = path;
@@ -588,36 +585,80 @@ int open_stream_internal(const char *path, unsigned int callflags,
 
     struct pathwalk_component *rootp = pathwalk_comp_alloc(NULL);
     rootp->nextp = NULL;
+    rootp->attr  = ATTR_SYSTEM_ROOT;
+
+#ifdef HAVE_MULTIVOLUME
+    int volume = 0, rootrc = WALK_RC_FOUND;
+#endif /* HAVE_MULTIVOLUME */
 
     while (1)
     {
-        rc = ns_parse_root(walk.path, &rootp->name, &rootp->length);
-        if (rc < 0)
-            break;
+        const char *pathptr = walk.path;
+ 
+    #ifdef HAVE_MULTIVOLUME
+        /* this seamlessly integrates secondary filesystems into the
+           root namespace (e.g. "/<0>/../../<1>/../foo/." :<=> "/foo") */
+        const char *p;
+        volume = path_strip_volume(pathptr, &p, false);
+        if (!CHECK_VOL(volume))
+        {
+            DEBUGF("No such device or address: %d\n", volume);
+            FILE_ERROR(ENXIO, -2);
+        }
+
+        if (p == pathptr)
+        {
+            /* the root of this subpath is the system root */
+            rootp->attr = ATTR_SYSTEM_ROOT;
+            rootrc = WALK_RC_FOUND_ROOT;
+        }
+        else
+        {
+            /* this subpath specifies a mount point */
+            rootp->attr = ATTR_MOUNT_POINT;
+            rootrc = WALK_RC_FOUND;
+        }
 
-        rc = ns_open_root(IF_MV(rc,) &walk.callflags, &rootp->info, &rootp->attr);
+        walk.path = p;
+    #endif /* HAVE_MULTIVOLUME */
+
+        /* set name to start at last leading separator; names of volume
+           specifiers will be returned as "/<fooN>" */
+        rootp->name   = GOBBLE_PATH_SEPCH(pathptr) - 1;
+        rootp->length =
+            IF_MV( rootrc == WALK_RC_FOUND ? p - rootp->name : ) 1;
+
+        rc = fat_open_rootdir(IF_MV(volume,) &rootp->info.fatfile);
         if (rc < 0)
+        {
+            /* not mounted */
+            DEBUGF("No such device or address: %d\n", IF_MV_VOL(volume));
+            rc = -ENXIO;
             break;
+        }
 
-        walk.path = rootp->name + rootp->length;
-
+        get_rootinfo_internal(&rootp->info);
         rc = walk_path(&walk, rootp, stream);
         if (rc != WALK_RC_CONT_AT_ROOT)
             break;
     }
 
-    if (rc >= 0)
+    switch (rc)
     {
+    case WALK_RC_FOUND_ROOT:
+        IF_MV( rc = rootrc; )
+    case WALK_RC_NOT_FOUND:
+    case WALK_RC_FOUND:
         /* FF_PROBE leaves nothing for caller to clean up */
-        if (walk.callflags & FF_PROBE)
+        if (callflags & FF_PROBE)
             filestr_base_destroy(stream);
-    }
-    else
-    {
-        /* utter, abject failure :`( */
+
+        break;
+
+    default: /* utter, abject failure :`( */
         DEBUGF("Open failed: rc=%d, errno=%d\n", rc, errno);
         filestr_base_destroy(stream);
-        FILE_ERROR(-rc, -1);
+        FILE_ERROR(-rc, -3);
     }
 
 file_error:
diff --git a/firmware/common/fileobj_mgr.c b/firmware/common/fileobj_mgr.c
index 37452fbbe1..e34a460e10 100644
--- a/firmware/common/fileobj_mgr.c
+++ b/firmware/common/fileobj_mgr.c
@@ -20,13 +20,12 @@
  ****************************************************************************/
 #include "config.h"
 #include "system.h"
-#include <errno.h>
 #include "debug.h"
 #include "file.h"
 #include "dir.h"
 #include "disk_cache.h"
 #include "fileobj_mgr.h"
-#include "rb_namespace.h"
+#include "dircache_redirect.h"
 
 /**
  * Manages file and directory streams on all volumes
@@ -35,8 +34,8 @@
  */
 
 
-/* there will always be enough of these for all user handles, thus most of
-   these functions don't return failure codes */
+/* there will always be enough of these for all user handles, thus these
+   functions don't return failure codes */
 #define MAX_FILEOBJS (MAX_OPEN_HANDLES + AUX_FILEOBJS)
 
 /* describes the file as an image on the storage medium */
@@ -85,15 +84,6 @@ static struct ll_head busy_bindings[NUM_VOLUMES];
     for (struct filestr_base *s = STREAM_##what(start); \
          s; s = STREAM_NEXT(s))
 
-/* once a file/directory, always a file/directory; such a change
-   is a bug */
-#define CHECK_FO_DIRECTORY(callflags, fobp) \
-    if (((callflags) ^ (fobp)->flags) & FO_DIRECTORY) \
-    {                                                            \
-        DEBUGF("%s - FO_DIRECTORY flag does not match: %p %u\n", \
-               __func__, (fobp), (callflags));                   \
-    }
-
 
 /* syncs information for the stream's old and new parent directory if any are
    currently opened */
@@ -106,10 +96,6 @@ static void fileobj_sync_parent(const struct file_base_info *infop[],
             continue; /* not directory or removed can't be parent of anything */
 
         struct filestr_base *parentstrp = STREAM_FIRST(fobp);
-
-        if (!parentstrp)
-            continue;
-
         struct fat_file *parentfilep = &parentstrp->infop->fatfile;
 
         for (int i = 0; i < count; i++)
@@ -125,7 +111,8 @@ static void fileobj_sync_parent(const struct file_base_info *infop[],
 }
 
 /* see if this file has open streams and return that fileobj_binding if so,
-   else grab a new one from the free list; returns true if this is new */
+   else grab a new one from the free list; returns true if this stream is
+   the only open one */
 static bool binding_assign(const struct file_base_info *srcinfop,
                            struct fileobj_binding **fobpp)
 {
@@ -136,7 +123,7 @@ static bool binding_assign(const struct file_base_info *srcinfop,
 
         if (fat_file_is_same(&srcinfop->fatfile, &fobp->bind.info.fatfile))
         {
-            /* already has open streams/mounts */
+            /* already has open streams */
             *fobpp = fobp;
             return false;
         }
@@ -156,23 +143,6 @@ static void binding_add_to_free_list(struct fileobj_binding *fobp)
     ll_insert_last(FREE_BINDINGS(), &fobp->bind.node);
 }
 
-static void bind_source_info(const struct file_base_info *srcinfop,
-                             struct fileobj_binding **fobpp)
-{
-    if (!binding_assign(srcinfop, fobpp))
-        return; /* already in use */
-
-    /* is new */
-    (*fobpp)->bind.info = *srcinfop;
-    fileobj_bind_file(&(*fobpp)->bind);
-}
-
-static void release_binding(struct fileobj_binding *fobp)
-{
-    fileobj_unbind_file(&fobp->bind);
-    binding_add_to_free_list(fobp);
-}
-
 /** File and directory internal interface **/
 
 void file_binding_insert_last(struct file_base_binding *bindp)
@@ -199,41 +169,6 @@ void file_binding_remove_next(struct file_base_binding *prevp,
 }
 #endif /* HAVE_DIRCACHE */
 
-/* mounts a file object as a target from elsewhere */
-bool fileobj_mount(const struct file_base_info *srcinfop,
-                   unsigned int callflags,
-                   struct file_base_binding **bindpp)
-{
-    struct fileobj_binding *fobp;
-    bind_source_info(srcinfop, &fobp);
-
-    CHECK_FO_DIRECTORY(callflags, fobp);
-
-    if (fobp->flags & FO_MOUNTTARGET)
-        return false;           /* already mounted */
-
-    fobp->flags |= FDO_BUSY | FO_MOUNTTARGET |
-                   (callflags & FO_DIRECTORY);
-
-    *bindpp = &fobp->bind;
-
-    return true;
-}
-
-/* unmounts the file object and frees it if now unusued */
-void fileobj_unmount(struct file_base_binding *bindp)
-{
-    struct fileobj_binding *fobp = (struct fileobj_binding *)bindp;
-
-    if (!(fobp->flags & FO_MOUNTTARGET))
-        return;                /* not mounted */
-
-    if (STREAM_FIRST(fobp) == NULL)
-        release_binding(fobp); /* no longer in use */
-    else
-        fobp->flags &= ~FO_MOUNTTARGET;
-}
-
 /* opens the file object for a new stream and sets up the caches;
  * the stream must already be opened at the FS driver level and *stream
  * initialized.
@@ -245,14 +180,10 @@ void fileobj_fileop_open(struct filestr_base *stream,
                          const struct file_base_info *srcinfop,
                          unsigned int callflags)
 {
-    /* assign base file information */
     struct fileobj_binding *fobp;
-    bind_source_info(srcinfop, &fobp);
-
-    unsigned int foflags = fobp->flags;
+    bool first = binding_assign(srcinfop, &fobp);
 
     /* add stream to this file's list */
-    bool first = STREAM_FIRST(fobp) == NULL;
     ll_insert_last(&fobp->list, &stream->node);
 
     /* initiate the new stream into the enclave */
@@ -266,16 +197,27 @@ void fileobj_fileop_open(struct filestr_base *stream,
     if (first)
     {
         /* first stream for file */
-        fobp->flags   = foflags | FDO_BUSY | FO_SINGLE |
-                        (callflags & (FO_DIRECTORY|FO_TRUNC));
-        fobp->writers = 0;
-        fobp->size    = 0;
+        fobp->bind.info = *srcinfop;
+        fobp->flags     = FDO_BUSY | FO_SINGLE |
+                          (callflags & (FO_DIRECTORY|FO_TRUNC));
+        fobp->writers   = 0;
+        fobp->size      = 0;
+
+        fileobj_bind_file(&fobp->bind);
     }
     else
     {
         /* additional stream for file */
-        fobp->flags = (foflags & ~FO_SINGLE) | (callflags & FO_TRUNC);
-        CHECK_FO_DIRECTORY(callflags, fobp);
+        fobp->flags &= ~FO_SINGLE;
+        fobp->flags |= callflags & FO_TRUNC;
+
+        /* once a file/directory, always a file/directory; such a change
+           is a bug */
+        if ((callflags ^ fobp->flags) & FO_DIRECTORY)
+        {
+            DEBUGF("%s - FO_DIRECTORY flag does not match: %p %u\n",
+                   __func__, stream, callflags);
+        }
     }
 
     if ((callflags & FD_WRITE) && ++fobp->writers == 1)
@@ -315,14 +257,12 @@ void fileobj_fileop_close(struct filestr_base *stream)
     if (foflags & FO_SINGLE)
     {
        /* last stream for file; close everything */
+        fileobj_unbind_file(&fobp->bind);
+
         if (fobp->writers)
             file_cache_free(&fobp->cache);
 
-        /* binding must stay valid if something is mounted to here */
-        if (foflags & FO_MOUNTTARGET)
-            fobp->flags = foflags & (FDO_BUSY|FO_DIRECTORY|FO_MOUNTTARGET);
-        else
-            release_binding(fobp);
+        binding_add_to_free_list(fobp); 
     }
     else
     {
diff --git a/firmware/common/pathfuncs.c b/firmware/common/pathfuncs.c
index 078c0b6938..0935a9a6e3 100644
--- a/firmware/common/pathfuncs.c
+++ b/firmware/common/pathfuncs.c
@@ -105,7 +105,7 @@ static const unsigned char storage_dec_indexes[STORAGE_NUM_TYPES+1] =
  */
 int path_strip_volume(const char *name, const char **nameptr, bool greedy)
 {
-    int volume = ROOT_VOLUME;
+    int volume = 0;
     const char *t = name;
     int c, v = 0;
 
@@ -114,16 +114,9 @@ int path_strip_volume(const char *name, const char **nameptr, bool greedy)
      * digits within the brackets is parsed as the volume number and of
      * those, only the last ones VOL_MUM_MAX allows.
      */
-    t = GOBBLE_PATH_SEPCH(t);   /* skip all leading slashes */
-    if (t == name)
-    {
-        volume = -1;            /* relative path; don't know */
-        goto psv_out;
-    }
-
-    c = *t;
+    c = *(t = GOBBLE_PATH_SEPCH(t)); /* skip all leading slashes */
     if (c != VOL_START_TOK)     /* missing start token? no volume */
-        goto psv_out;
+        goto volume0;
 
     do
     {
@@ -134,7 +127,7 @@ int path_strip_volume(const char *name, const char **nameptr, bool greedy)
             break;
         case '\0':
         case PATH_SEPCH:        /* no closing bracket; no volume */
-            goto psv_out;
+            goto volume0;
         default:                /* something else; reset volume */
             v = 0;
         }
@@ -144,7 +137,7 @@ int path_strip_volume(const char *name, const char **nameptr, bool greedy)
     if (!(c = *++t))            /* no more path and no '/' is ok */
         ;
     else if (c != PATH_SEPCH)   /* more path and no separator after end */
-        goto psv_out;
+        goto volume0;
     else if (greedy)
         t = GOBBLE_PATH_SEPCH(++t); /* strip remaining separators */
 
@@ -153,7 +146,7 @@ int path_strip_volume(const char *name, const char **nameptr, bool greedy)
 
     volume = v;
     name = t;
-psv_out:
+volume0:
     if (nameptr)
         *nameptr = name;
     return volume;
@@ -164,14 +157,10 @@ psv_out:
  */
 int get_volume_name(int volume, char *buffer)
 {
-    if (volume < 0 || volume == ROOT_VOLUME)
+    if (volume < 0)
     {
-        char *t = buffer;
-        if (volume == ROOT_VOLUME)
-            *t++ = PATH_ROOTCHR;
-
-        *t = '\0';
-        return t - buffer;
+        *buffer = '\0';
+        return 0;
     }
 
     volume %= VOL_NUM_MAX; /* as path parser would have it */
@@ -184,20 +173,6 @@ int get_volume_name(int volume, char *buffer)
     return snprintf(buffer, VOL_MAX_LEN + 1, "%c%s%d%c",
                     VOL_START_TOK, voldec, volume, VOL_END_TOK);
 }
-
-/* Returns volume name formatted with the root. Assumes buffer size is at
- * least {VOL_MAX_LEN}+2 */
-int make_volume_root(int volume, char *buffer)
-{
-    char *t = buffer;
-
-    if (volume >= 0 && volume != ROOT_VOLUME)
-        *t++ = PATH_ROOTCHR;
-
-    t += get_volume_name(volume, t);
-
-    return t - buffer;
-}
 #endif /* HAVE_MULTIVOLUME */
 
 /* Just like path_strip_volume() but strips a leading drive specifier and
diff --git a/firmware/common/rb_namespace.c b/firmware/common/rb_namespace.c
deleted file mode 100644
index 04f92e97af..0000000000
--- a/firmware/common/rb_namespace.c
+++ /dev/null
@@ -1,289 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- * $Id$
- *
- * Copyright (C) 2017 by Michael Sevakis
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
-#include "config.h"
-#include <errno.h>
-#include "fileobj_mgr.h"
-#include "rb_namespace.h"
-
-#define ROOT_CONTENTS_INDEX  (NUM_VOLUMES)
-#define NUM_ROOT_ITEMS   (NUM_VOLUMES+1)
-
-static uint8_t root_entry_flags[NUM_VOLUMES+1];
-static struct file_base_binding *root_bindp;
-
-static inline unsigned int get_root_item_state(int item)
-{
-    return root_entry_flags[item];
-}
-
-static inline void set_root_item_state(int item, unsigned int state)
-{
-    root_entry_flags[item] = state;
-}
-
-static void get_mount_point_entry(IF_MV(int volume,) struct dirent *entry)
-{
-#ifdef HAVE_MULTIVOLUME
-    get_volume_name(volume, entry->d_name);
-#else /* */
-    strcpy(entry->d_name, PATH_ROOTSTR);
-#endif /* HAVE_MULTIVOLUME */
-
-    /* is dirinfo_native */
-    entry->info.attr    = ATTR_MOUNT_POINT;
-    entry->info.size    = 0;
-    entry->info.wrtdate = 0;
-    entry->info.wrttime = 0;
-}
-
-/* unmount the directory that enumerates into the root namespace */
-static void unmount_item(int item)
-{
-    unsigned int state = get_root_item_state(item);
-    if (!state)
-        return;
-
-    if (state & NSITEM_CONTENTS)
-    {
-        fileobj_unmount(root_bindp);
-        root_bindp = NULL;
-    }
-
-    set_root_item_state(item, 0);
-}
-
-/* mount the directory that enumerates into the root namespace */
-int root_mount_path(const char *path, unsigned int flags)
-{
-#ifdef HAVE_MULTIVOLUME
-    int volume = path_strip_volume(path, NULL, false);
-    if (volume == ROOT_VOLUME)
-        return -EINVAL;
-
-    if (!CHECK_VOL(volume))
-        return -ENOENT;
-#else
-    if (!path_is_absolute(path))
-        return -ENOENT;
-#endif /* HAVE_MULTIVOLUME */
-
-    bool contents = flags & NSITEM_CONTENTS;
-    int item = contents ? ROOT_CONTENTS_INDEX : IF_MV_VOL(volume);
-    unsigned int state = get_root_item_state(item);
-
-    if (state)
-        return -EBUSY;
-
-    if (contents)
-    {
-        /* cache information about the target */
-        struct filestr_base stream;
-        struct path_component_info compinfo;
-
-        int e = errno;
-        int rc = open_stream_internal(path, FF_DIR | FF_PROBE | FF_INFO |
-                                      FF_DEVPATH, &stream, &compinfo);
-        if (rc <= 0)
-        {
-            rc = rc ? -errno : -ENOENT;
-            errno = e;
-            return rc;
-        }
-
-        if (!fileobj_mount(&compinfo.info, FO_DIRECTORY, &root_bindp))
-            return -EBUSY;
-    }
-
-    state = NSITEM_MOUNTED | (flags & (NSITEM_HIDDEN|NSITEM_CONTENTS));
-    set_root_item_state(item, state);
-
-    return 0;
-}
-
-/* inform root that an entire volume is being unmounted */
-void root_unmount_volume(IF_MV_NONVOID(int volume))
-{
-    FOR_EACH_VOLUME(volume, item)
-    {
-    #ifdef HAVE_MULTIVOLUME
-        uint32_t state = get_root_item_state(item);
-        if (state && (volume < 0 || item == volume))
-    #endif /* HAVE_MULTIVOLUME */
-            unmount_item(item);
-    }
-
-    /* if the volume unmounted contains the root directory contents then
-       the contents must also be unmounted */
-#ifdef HAVE_MULTIVOLUME
-    uint32_t state = get_root_item_state(ROOT_CONTENTS_INDEX);
-    if (state && (volume < 0 || BASEINFO_VOL(&root_bindp->info) == volume))
-#endif
-        unmount_item(ROOT_CONTENTS_INDEX);
-}
-
-/* parse the root part of a path */
-int ns_parse_root(const char *path, const char **pathp, uint16_t *lenp)
-{
-    int volume = ROOT_VOLUME;
-
-#ifdef HAVE_MULTIVOLUME
-    /* this seamlessly integrates secondary filesystems into the
-       root namespace (e.g. "/<0>/../../<1>/../foo/." :<=> "/foo") */
-    const char *p;
-    volume = path_strip_volume(path, &p, false);
-    if (volume != ROOT_VOLUME && !CHECK_VOL(volume))
-        return -ENOENT;
-#endif /* HAVE_MULTIVOLUME */
-
-    /* set name to start at last leading separator; name of root will
-     * be returned as "/", volume specifiers as "/<fooN>" */
-    *pathp = GOBBLE_PATH_SEPCH(path) - 1;
-    *lenp  = IF_MV( volume < NUM_VOLUMES ? p - *pathp : ) 1;
-
-#ifdef HAVE_MULTIVOLUME
-    if (*lenp > MAX_COMPNAME+1)
-        return -ENAMETOOLONG;
-#endif
-
-    return volume;
-}
-
-/* open one of the items in the root */
-int ns_open_root(IF_MV(int volume,) unsigned int *callflagsp,
-                 struct file_base_info *infop, uint16_t *attrp)
-{
-    unsigned int callflags = *callflagsp;
-    bool devpath = !!(callflags & FF_DEVPATH);
-#ifdef HAVE_MULTIVOLUME
-    bool sysroot = volume == ROOT_VOLUME;
-    if (devpath && sysroot)
-        return -ENOENT;         /* devpath needs volume spec */
-#else
-    bool sysroot = !devpath;    /* always sysroot unless devpath */
-#endif
-
-    int item = sysroot ? ROOT_CONTENTS_INDEX : IF_MV_VOL(volume);
-    unsigned int state = get_root_item_state(item);
-
-    if (sysroot)
-    {
-        *attrp = ATTR_SYSTEM_ROOT;
-
-        if (state)
-            *infop = root_bindp->info;
-        else
-            *callflagsp = callflags | FF_NOFS;  /* contents not mounted */
-    }
-    else
-    {
-        *attrp = ATTR_MOUNT_POINT;
-
-        if (!devpath && !state)
-            return -ENOENT; /* regular open requires having been mounted */
-
-        if (fat_open_rootdir(IF_MV(volume,) &infop->fatfile) < 0)
-            return -ENOENT; /* not mounted */
-
-        get_rootinfo_internal(infop);
-    }
-
-    return 0;
-}
-
-/* read root directory entries */
-int root_readdir_dirent(struct filestr_base *stream,
-                        struct ns_scan_info *scanp, struct dirent *entry)
-{
-    int rc = 0;
-
-    int item = scanp->item;
-
-    /* skip any not-mounted or hidden items */
-    unsigned int state;
-    while (1)
-    {
-        if (item >= NUM_ROOT_ITEMS)
-            goto file_eod;
-
-        state = get_root_item_state(item);
-        if ((state & (NSITEM_MOUNTED|NSITEM_HIDDEN)) == NSITEM_MOUNTED)
-            break;
-
-        item++;
-    }
-
-    if (item == ROOT_CONTENTS_INDEX)
-    {
-        rc = readdir_dirent(stream, &scanp->scan, entry);
-        if (rc < 0)
-            FILE_ERROR(ERRNO, rc * 10 - 1);
-
-        if (rc == 0)
-            item++;
-    }
-    else
-    {
-        get_mount_point_entry(IF_MV(item,) entry);
-        item++;
-        rc = 1;
-    }
-
-    scanp->item = item;
-
-file_eod:
-    if (rc == 0)
-        empty_dirent(entry);
-
-file_error:
-    return rc;
-}
-
-/* opens a stream to enumerate items in a namespace container */
-int ns_open_stream(const char *path, unsigned int callflags,
-                   struct filestr_base *stream, struct ns_scan_info *scanp)
-{
-    /* stream still needs synchronization even if we don't have a stream */
-    static struct mutex no_contents_mtx SHAREDBSS_ATTR;
-
-    int rc = open_stream_internal(path, callflags, stream, NULL);
-    if (rc < 0)
-        FILE_ERROR(ERRNO, rc * 10 - 1);
-
-    scanp->item = rc > 1 ? 0 : -1;
-
-    if (stream->flags & FDO_BUSY)
-    {
-        /* root contents are mounted */
-        fat_rewind(&stream->fatstr);
-    }
-    else
-    {
-        /* root contents not mounted */
-        mutex_init(&no_contents_mtx);
-        stream->mtx = &no_contents_mtx;
-    }
-
-    ns_dirscan_rewind(scanp);
-
-    rc = 0;
-file_error:
-    return rc;
-}
diff --git a/firmware/export/mv.h b/firmware/export/mv.h
index 5aa0ff8b4d..ec7b2efdbd 100644
--- a/firmware/export/mv.h
+++ b/firmware/export/mv.h
@@ -84,10 +84,6 @@
 #define VOL_MAX_LEN      (1 + VOL_DEC_MAX_LEN + 2 + 1)
 #define VOL_NUM_MAX      100
 
-#ifndef ROOT_VOLUME
-#define ROOT_VOLUME      INT_MAX
-#endif
-
 #else /* empty definitions if no multi-volume */
 #define IF_MV(x...)
 #define IF_MV_NONVOID(x...) void
diff --git a/firmware/export/pathfuncs.h b/firmware/export/pathfuncs.h
index 8858d85d24..92539c54c1 100644
--- a/firmware/export/pathfuncs.h
+++ b/firmware/export/pathfuncs.h
@@ -30,15 +30,10 @@
 /* useful char constants that could be reconfigured if desired */
 #define PATH_SEPCH    '/'
 #define PATH_SEPSTR   "/"
-#define PATH_ROOTCHR  '/'
 #define PATH_ROOTSTR  "/"
 #define PATH_BADSEPCH '\\'
 #define PATH_DRVSEPCH ':'
 
-#ifndef ROOT_VOLUME
-#define ROOT_VOLUME   INT_MAX
-#endif
-
 /* a nicer way to check for "." and ".." than two strcmp() calls */
 static inline bool is_dotdir_name(const char *name)
 {
@@ -80,7 +75,6 @@ static inline bool name_is_dot_dot(const char *name)
 #ifdef HAVE_MULTIVOLUME
 int path_strip_volume(const char *name, const char **nameptr, bool greedy);
 int get_volume_name(int volume, char *name);
-int make_volume_root(int volume, char *dst);
 #endif
 
 int path_strip_drive(const char *name, const char **nameptr, bool greedy);
diff --git a/firmware/export/rbpaths.h b/firmware/export/rbpaths.h
index 458a070f92..de591f0ec1 100644
--- a/firmware/export/rbpaths.h
+++ b/firmware/export/rbpaths.h
@@ -64,9 +64,6 @@
 #define PLUGIN_DIR          ROCKBOX_DIR "/rocks"
 #define CODECS_DIR          ROCKBOX_DIR "/codecs"
 
-#define RB_ROOT_VOL_HIDDEN(v)   (IF_MV_VOL(v) == 0)
-#define RB_ROOT_CONTENTS_DIR    "/" IF_MV("<0>")
-
 #else /* APPLICATION */
 
 #define HOME_DIR "<HOME>" /* replaced at runtime */
diff --git a/firmware/include/dircache_redirect.h b/firmware/include/dircache_redirect.h
index e8cf8dc8f5..9fae16b551 100644
--- a/firmware/include/dircache_redirect.h
+++ b/firmware/include/dircache_redirect.h
@@ -20,16 +20,7 @@
  ****************************************************************************/
 #ifndef _DIRCACHE_REDIRECT_H_
 
-#include "rbpaths.h"
-#include "pathfuncs.h"
 #include "dir.h"
-#include "dircache.h"
-
-#if defined(HAVE_MULTIBOOT) && !defined(SIMULATOR)
-#include "rb-loader.h"
-#include "bootdata.h"
-#include "crc32.h"
-#endif
 
 /***
  ** Internal redirects that depend upon whether or not dircache is made
@@ -132,56 +123,10 @@ static inline void fileop_onsync_internal(struct filestr_base *stream)
 
 static inline void volume_onmount_internal(IF_MV_NONVOID(int volume))
 {
-#ifdef HAVE_MULTIVOLUME
-    char path[VOL_MAX_LEN+2];
-    make_volume_root(volume, path);
-#else
-    const char *path = PATH_ROOTSTR;
-#endif
-
-#if defined(HAVE_MULTIBOOT) && !defined(SIMULATOR)
-    static char rtpath[VOL_MAX_LEN+2] = RB_ROOT_CONTENTS_DIR;
-    static bool redirected = false;
-    int boot_volume = 0;
-    unsigned int crc = 0;
-
-        crc = crc_32(boot_data.payload, boot_data.length, 0xffffffff);
-        if (crc == boot_data.crc)
-        {
-            root_mount_path(path, 0); /*root could be different folder don't hide*/
-            boot_volume = boot_data.boot_volume; /* boot volume contained in uint8_t payload */
-            //root_mount_path(path, volume == boot_volume ? NSITEM_HIDDEN : 0);
-            if (!redirected && volume == boot_volume)
-            {
-                if (get_redirect_dir(rtpath, sizeof(rtpath), volume, "", "") < 0)
-                {   /* Error occurred, card removed? Set root to default */
-                    root_mount_path(RB_ROOT_CONTENTS_DIR, NSITEM_CONTENTS);
-                }
-                else
-                    redirected = true;
-            }
-            if (redirected && volume == boot_volume)
-                root_mount_path(rtpath, NSITEM_CONTENTS);
-        } /*CRC OK*/
-        else
-        {
-            root_mount_path(path, RB_ROOT_VOL_HIDDEN(volume) ? NSITEM_HIDDEN : 0);
-            if (volume == path_strip_volume(RB_ROOT_CONTENTS_DIR, NULL, false))
-                root_mount_path(RB_ROOT_CONTENTS_DIR, NSITEM_CONTENTS);
-        }
-#else
-
-    root_mount_path(path, RB_ROOT_VOL_HIDDEN(volume) ? NSITEM_HIDDEN : 0);
-#ifdef HAVE_MULTIVOLUME
-    if (volume == path_strip_volume(RB_ROOT_CONTENTS_DIR, NULL, false))
-#endif
-        root_mount_path(RB_ROOT_CONTENTS_DIR, NSITEM_CONTENTS);
-
-#endif /* HAVE_MULTIBOOT */
-
 #ifdef HAVE_DIRCACHE
     dircache_mount();
 #endif
+    IF_MV( (void)volume; )
 }
 
 static inline void volume_onunmount_internal(IF_MV_NONVOID(int volume))
@@ -190,7 +135,6 @@ static inline void volume_onunmount_internal(IF_MV_NONVOID(int volume))
     /* First, to avoid update of something about to be destroyed anyway */
     dircache_unmount(IF_MV(volume));
 #endif
-    root_unmount_volume(IF_MV(volume));
     fileobj_mgr_unmount(IF_MV(volume));
 }
 
diff --git a/firmware/include/file_internal.h b/firmware/include/file_internal.h
index f4bd8bb8c2..d62b5a8541 100644
--- a/firmware/include/file_internal.h
+++ b/firmware/include/file_internal.h
@@ -72,18 +72,16 @@ enum fildes_and_obj_flags
     /* used in descriptor and common */
     FDO_BUSY       = 0x0001,     /* descriptor/object is in use */
     /* only used in individual stream descriptor */
-    FD_VALID       = 0x0002,     /* descriptor is valid but not registered */
-    FD_WRITE       = 0x0004,     /* descriptor has write mode */
-    FD_WRONLY      = 0x0008,     /* descriptor is write mode only */
-    FD_APPEND      = 0x0010,     /* descriptor is append mode */
+    FD_WRITE       = 0x0002,     /* descriptor has write mode */
+    FD_WRONLY      = 0x0004,     /* descriptor is write mode only */
+    FD_APPEND      = 0x0008,     /* descriptor is append mode */
     FD_NONEXIST    = 0x8000,     /* closed but not freed (uncombined) */
     /* only used as common flags */
-    FO_DIRECTORY   = 0x0020,     /* fileobj is a directory */
-    FO_TRUNC       = 0x0040,     /* fileobj is opened to be truncated */
-    FO_REMOVED     = 0x0080,     /* fileobj was deleted while open */
-    FO_SINGLE      = 0x0100,     /* fileobj has only one stream open */
-    FO_MOUNTTARGET = 0x0200,     /* fileobj kept open as a mount target */
-    FDO_MASK       = 0x03ff,
+    FO_DIRECTORY   = 0x0010,     /* fileobj is a directory */
+    FO_TRUNC       = 0x0020,     /* fileobj is opened to be truncated */
+    FO_REMOVED     = 0x0040,     /* fileobj was deleted while open */
+    FO_SINGLE      = 0x0080,     /* fileobj has only one stream open */
+    FDO_MASK       = 0x00ff,
     FDO_CHG_MASK   = FO_TRUNC,   /* fileobj permitted external change */
     /* bitflags that instruct various 'open' functions how to behave;
      * saved in stream flags (only) but not used by manager */
@@ -97,9 +95,7 @@ enum fildes_and_obj_flags
     FF_CACHEONLY   = 0x00200000, /* succeed only if in dircache */
     FF_INFO        = 0x00400000, /* return info on self */
     FF_PARENTINFO  = 0x00800000, /* return info on parent */
-    FF_DEVPATH     = 0x01000000, /* path is a device path, not root-based */
-    FF_NOFS        = 0x02000000, /* no filesystem mounted here */
-    FF_MASK        = 0x03ff0000,
+    FF_MASK        = 0x00ff0000,
 };
 
 /** Common data structures used throughout **/
diff --git a/firmware/include/fileobj_mgr.h b/firmware/include/fileobj_mgr.h
index 0db3520d34..627d2df341 100644
--- a/firmware/include/fileobj_mgr.h
+++ b/firmware/include/fileobj_mgr.h
@@ -29,11 +29,6 @@ void file_binding_remove(struct file_base_binding *bindp);
 void file_binding_remove_next(struct file_base_binding *prevp,
                               struct file_base_binding *bindp);
 
-bool fileobj_mount(const struct file_base_info *srcinfop,
-                   unsigned int callflags,
-                   struct file_base_binding **bindpp);
-void fileobj_unmount(struct file_base_binding *bindp);
-
 void fileobj_fileop_open(struct filestr_base *stream,
                          const struct file_base_info *srcinfop,
                          unsigned int callflags);
diff --git a/firmware/include/fs_defines.h b/firmware/include/fs_defines.h
index aee6daff6a..538c4b36cd 100644
--- a/firmware/include/fs_defines.h
+++ b/firmware/include/fs_defines.h
@@ -51,19 +51,12 @@
 /* internal functions open streams as well; make sure they don't fail if all
    user descs are busy; this needs to be at least the greatest quantity needed
    at once by all internal functions */
-/* internal functions open streams as well; make sure they don't fail if all
-   user descs are busy; this needs to be at least the greatest quantity needed
-   at once by all internal functions */
-#define MOUNT_AUX_FILEOBJS 1
-
 #ifdef HAVE_DIRCACHE
-#define DIRCACHE_AUX_FILEOBJS 1
+#define AUX_FILEOBJS 3
 #else
-#define DIRCACHE_AUX_FILEOBJS 0
+#define AUX_FILEOBJS 2
 #endif
 
-#define AUX_FILEOBJS (2+DIRCACHE_AUX_FILEOBJS+MOUNT_AUX_FILEOBJS)
-
 /* number of components statically allocated to handle the vast majority
    of path depths; should maybe be tuned for >= 90th percentile but for now,
    imma just guessing based on something like:
diff --git a/firmware/include/rb_namespace.h b/firmware/include/rb_namespace.h
deleted file mode 100644
index 4d7a125c7b..0000000000
--- a/firmware/include/rb_namespace.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- * $Id$
- *
- * Copyright (C) 2017 by Michael Sevakis
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
-#ifndef RB_NAMESPACE_H
-#define RB_NAMESPACE_H
-
-#include "file_internal.h"
-
-enum ns_item_flags
-{
-    NSITEM_MOUNTED   = 0x01, /* item is mounted */
-    NSITEM_HIDDEN    = 0x02, /* item is not enumerated */
-    NSITEM_CONTENTS  = 0x04, /* contents enumerate */
-};
-
-struct ns_scan_info
-{
-    struct dirscan_info scan; /* dirscan info - first! */
-    int                 item; /* current item in parent */
-};
-
-/* root functions */
-int root_mount_path(const char *path, unsigned int flags);
-void root_unmount_volume(IF_MV_NONVOID(int volume));
-int root_readdir_dirent(struct filestr_base *stream,
-                        struct ns_scan_info *scanp,
-                        struct dirent *entry);
-
-/* namespace functions */
-int ns_parse_root(const char *path, const char **pathp, uint16_t *lenp);
-int ns_open_root(IF_MV(int volume,) unsigned int *callflagsp,
-                 struct file_base_info *infop, uint16_t *attrp);
-int ns_open_stream(const char *path, unsigned int callflags,
-                   struct filestr_base *stream, struct ns_scan_info *scanp);
-
-/* closes the namespace stream */
-static inline int ns_close_stream(struct filestr_base *stream)
-{
-    return close_stream_internal(stream);
-}
-
-#include "dircache_redirect.h"
-
-static inline void ns_dirscan_rewind(struct ns_scan_info *scanp)
-{
-    rewinddir_dirent(&scanp->scan);
-    if (scanp->item != -1)
-        scanp->item = 0;
-}
-
-static inline int ns_readdir_dirent(struct filestr_base *stream,
-                                    struct ns_scan_info *scanp,
-                                    struct dirent *entry)
-
-{
-    if (scanp->item == -1)
-        return readdir_dirent(stream, &scanp->scan, entry);
-    else
-        return root_readdir_dirent(stream, scanp, entry);
-}
-
-#endif /* RB_NAMESPACE_H */
diff --git a/uisimulator/common/filesystem-sim.c b/uisimulator/common/filesystem-sim.c
index 45483b7172..766beb3fda 100644
--- a/uisimulator/common/filesystem-sim.c
+++ b/uisimulator/common/filesystem-sim.c
@@ -309,8 +309,6 @@ int sim_get_os_path(char *buffer, const char *path, size_t bufsize)
 
             const char *next;
             volume = path_strip_volume(p, &next, true);
-            if (volume == ROOT_VOLUME)
-                volume = 0; /* FIXME: root no longer implies volume 0 */
 
             if (next > p)
             {