2000-05-24 Fernando Ruiz Casas <fernando.ruiz@ctv.es>

* monitor/mon-prmisc.c: Correct print line.
	* shell/Makefile.am: Added new file telnetd.c.
	* shell/telnetd.c, shell/telnetd.h, shell/pty.c: New files.
	* shell/shell.c, shell/cmds.c, shell/shell.h: Numerous improvments:
	   - The shell_init has a new parameter 'forever' because in
	     /dev/console you need that this process runs forever but in
	     tcp/ip not. (respawn?)
	   - A new task for every session opened trought tcp/ip telnet client.
	     (the chargen,daytime and more are possible of implementation but
	     I ask me if they are necesary)
	   - Exit from the session delete the task and when the client fails too.
	   - More cmds have been implemented. (very reduced version of these)
	     umask, chmod, id, whoami, rm, cat, ...
	   - A reduced line edit has been implemented.
	       Ctrl-C abort the input,
	       Ctrl-d in the first position gives EOF (logout).
	       '\b' and DEL makes the rubout operation.
	       I think that readline() for every session spents a lot of resources.

c/src/libmisc/shell/shell.h

@@ -45,21 +45,61 @@ typedef struct  {
   char * taskname;
   tcflag_t tcflag;
   /* user extensions */
+  int  exit_shell; /* logout */
+  int  forever   ; /* repeat login */
   int  errorlevel;
   int  mdump_adr;
 } shell_env_t;
 
 int shell_scanline(char * line,int size,FILE * in,FILE * out) ;
+void cat_file(FILE * out,char *name);
 	
 rtems_status_code shell_init(char * task_name      ,
                               rtems_unsigned32    task_stacksize,/*0 default*/
 		              rtems_task_priority task_priority ,
                               char * devname      ,
-			      tcflag_t tcflag     );
+			      tcflag_t tcflag     ,
+			      int forever         );	
 
 extern shell_env_t global_shell_env,
                 *  current_shell_env;
 /*--------*/
+/* pty.c */ 
+/*--------*/
+
+char * get_pty(int socket);
+
+
+rtems_device_driver pty_initialize(
+  rtems_device_major_number  major,
+  rtems_device_minor_number  minor,
+  void                      *arg);
+rtems_device_driver pty_open(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+rtems_device_driver pty_close(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+rtems_device_driver pty_read(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+rtems_device_driver pty_write(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+rtems_device_driver pty_control(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg);
+
+
+#define PTY_DRIVER_TABLE_ENTRY \
+       { pty_initialize , pty_open , pty_close , \
+	 pty_read , pty_write , pty_control }
+/*--------*/
 /* cmds.c */ 
 /*--------*/
 int str2int(char * s);