Extend the NSH mount command so that it will enumerate mountpoints if no arguments are provided

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5006 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 17 insertions, 5 deletions

diff --git a/apps/nshlib/README.txt b/apps/nshlib/README.txt
index 83f2b007b..45d14f30d 100644
--- a/apps/nshlib/README.txt
+++ b/apps/nshlib/README.txt
@@ -553,10 +553,17 @@ o mkrd [-m <minor>] [-s <sector-size>] <nsectors>
     /tmp:
     nsh>
 
-o mount -t <fstype> <block-device> <dir-path>
+o mount [-t <fstype> <block-device> <dir-path>]
 
-  The 'mount' command mounts a file system in the NuttX psuedo
-  filesystem.  'mount' performs a three way associating, binding
+  The mount command performs one of two different operations.  If no
+  paramters are provided on the command line after the mount command,
+  then the 'mount' command will enumerate all of the current
+  mountpoints on the console.
+
+  If the mount parameters are provied on the command after the 'mount'
+  command, then the 'mount' command will mount a file system in the
+  NuttX psuedo-file system.  'mount' performs a three way association,
+  binding:
 
     File system.  The '-t <fstype>' option identifies the type of
       file system that has been formatted on the <block-device>.  As
@@ -579,8 +586,8 @@ o mount -t <fstype> <block-device> <dir-path>
   system, it may be access in the same way as other objects in the
   file system.
 
-  Example:
-  ^^^^^^^^
+  Examples:
+  ^^^^^^^^^
 
     nsh> ls -l /dev
     /dev:
@@ -602,6 +609,11 @@ o mount -t <fstype> <block-device> <dir-path>
     This is a test
     nsh>
 
+    nsh> mount
+      /etc type romfs
+      /tmp type vfat
+      /mnt/fs type vfat
+
 o mv <old-path> <new-path>
 
   Rename the file object at <old-path> to <new-path>.  Both paths must