libmisc/shell

Fernando RUIZ correo at fernando-ruiz.com
Wed Dec 6 15:54:18 CST 2006


HI,

You can simulate the shell process and call it.

You can take this code like an idea to do it


#include <???/shell.h>


/* ---------------------------------------------------*/
int set_rawmode(char * devname)
{
  ftell(stdin);
  ftell(stdout);
  ftell(stderr);

  stdin =fopen(devname,"r+");

  if (!stdin) {
   fprintf(stderr,"shell:unable to open
stdin.%s:%s\n",devname,strerror(errno));
   return -1;
  };

  setvbuf(stdin,NULL,_IONBF,0); /* Not buffered*/
  /* make a raw terminal,Linux MANuals */
  if (tcgetattr (fileno(stdin), &term)>=0) {
   term.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
   term.c_oflag &= ~OPOST;
   term.c_oflag |= (OPOST|ONLCR); /* But with cr+nl on output */
   term.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
   term.c_cflag  = CLOCAL | CREAD |(shell_env->tcflag);
   term.c_cc[VMIN]  = 1;
   term.c_cc[VTIME] = 0;
   if (tcsetattr (fileno(stdin), TCSADRAIN, &term) < 0) {
     fprintf(stderr,"shell:cannot set terminal attributes(%s)\n",devname);
   };
   stdout=fopen(devname,"r+");
   if (!stdout) {
    fprintf(stderr,"shell:unable to open
stdout.%s:%s\n",devname,strerror(errno));
    return -1;
   };
   setvbuf(stdout,NULL,_IONBF,0); /* Not buffered*/
   stderr=fopen(devname,"r+");
   if (!stderr) {
    fprintf(stdout,"shell:unable to open
stderr.%s:%s\n",devname,strerror(errno));
    return -1;
   };
  };
  return 0;
}

/* ---------------------------------------------------*/
int reset_rawmode(char * devname)
{
  fclose(stdin);
  fclose(stdout);
  fclose(stderr);
  stdin =fopen(devname,"r+");
  if (!stdin) {
   return -1;
  };
  stdout=fopen(devname,"r+");
  if (!stdout) {
   return -1;
  };
  stderr=fopen(devname,"r+");
  if (!stderr) {
   return -1;
  };
  return 0;
}
/* ---------------------------------------------------*/
int local_shell(char * devname)
{

  shell_env_t * shell_env =&current_shell_env;
  shell_cmd_t * shell_cmd;

  char cmd[256];
  int  argc;
  char * argv[128];


  set_rawmode(devname);

  shell_add_cmd(NULL,NULL,NULL,NULL); /* init the chain list*/
  register_cmds();

  /* add your commands here  with shell_add_cmd(...)*/


  /* ========= */
  /* main loop*/
  /* ========= */
  for (;;)
  {
    if (!shell_scanline(cmd,sizeof(cmd),stdin,stdout)) break; /*EOF*/
    if (shell_make_args(cmd,&argc,argv)) {
     if ((shell_cmd=shell_lookup_cmd(argv[0]))!=NULL) {
      shell_env->errorlevel=shell_cmd->command(argc,argv);

     } else {
      fprintf(stdout,"shell:%s command not found\n",argv[0]);
      shell_env->errorlevel=-1;
     };
    };
    /* end exec cmd section */
    if (shell_env->exit_shell)  break;
    cmd[0]=0;
   };
  /* ========= */
 }
 reset_rawmode(devname);
 return shell_env->errorlevel;
}
/* ---------------------------------------------------*/

See you.

Of course this code is not tested because I don't dispose the rtems box now.
Sorry.




-----Mensaje original-----
De: rtems-users-bounces+correo=fernando-ruiz.com at rtems.org
[mailto:rtems-users-bounces+correo=fernando-ruiz.com at rtems.org]En nombre
de Wolfram Wadepohl
Enviado el: lundi 27 novembre 2006 10:17
Para: rtems-users at rtems.com
Asunto: libmisc/shell


Hello,

is there any further documentation for the shell and the shell environment?

i want to call a shell from and return to caller if user exits.

shell_init() start create and starts another task, but does not wait until
this task terminates. aslo shell_shell() cannot be called because if user
exits the executing task is deleted.

Any suggestions? Thank You.
--
Schöne Grüße aus Reutlingen

Wolfram Wadepohl
Forschung & Entwicklung

E&K AUTOMATION
Indumat GmbH & Co. KG
Siemensstraße 3
72766 Reutlingen
Deutschland

Tel.  +49 7121 514-289
Fax   +49 7121 514-299
eMail W.Wadepohl at indumat.de
       Wolfram.Wadepohl at ek-automation.com
       W.Wadepohl at ieee.org
WWW   http://www.indumat.de
       http://www.ek-automation.com


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