[grub2.git] / grub-core / commands / terminal.c

/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 2009,2010  Free Software Foundation, Inc.
 *
 *  GRUB 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  GRUB is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <grub/mm.h>
#include <grub/dl.h>
#include <grub/command.h>
#include <grub/term.h>
#include <grub/i18n.h>
#include <grub/misc.h>

GRUB_MOD_LICENSE ("GPLv3+");

struct grub_term_autoload *grub_term_input_autoload = NULL;
struct grub_term_autoload *grub_term_output_autoload = NULL;

struct abstract_terminal
{
  struct abstract_terminal *next;
  struct abstract_terminal *prev;
  const char *name;
  grub_err_t (*init) (struct abstract_terminal *term);
  grub_err_t (*fini) (struct abstract_terminal *term);
};

static grub_err_t
handle_command (int argc, char **args, struct abstract_terminal **enabled,
               struct abstract_terminal **disabled,
               struct grub_term_autoload *autoloads,
               const char *active_str,
               const char *available_str)
{
  int i;
  struct abstract_terminal *term;
  struct grub_term_autoload *aut;

  if (argc == 0)
    {
      grub_puts_ (active_str);
      for (term = *enabled; term; term = term->next)
       grub_printf ("%s ", term->name);
      grub_printf ("\n");
      grub_puts_ (available_str);
      for (term = *disabled; term; term = term->next)
       grub_printf ("%s ", term->name);
      /* This is quadratic but we don't expect mode than 30 terminal
        modules ever.  */
      for (aut = autoloads; aut; aut = aut->next)
       {
         for (term = *disabled; term; term = term->next)
           if (grub_strcmp (term->name, aut->name) == 0
	       || (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
		   && grub_memcmp (term->name, aut->name,
				   grub_strlen (aut->name) - 1) == 0))
             break;
         if (!term)
           for (term = *enabled; term; term = term->next)
             if (grub_strcmp (term->name, aut->name) == 0
		 || (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
		     && grub_memcmp (term->name, aut->name,
				     grub_strlen (aut->name) - 1) == 0))
               break;
         if (!term)
           grub_printf ("%s ", aut->name);
       }
      grub_printf ("\n");
      return GRUB_ERR_NONE;
    }
  i = 0;

  if (grub_strcmp (args[0], "--append") == 0
      || grub_strcmp (args[0], "--remove") == 0)
    i++;

  if (i == argc)
    return grub_error (GRUB_ERR_BAD_ARGUMENT, N_ ("no terminal specified"));

  for (; i < argc; i++)
    {
      int again = 0;
      while (1)
       {
         for (term = *disabled; term; term = term->next)
           if (grub_strcmp (args[i], term->name) == 0
	       || (grub_strcmp (args[i], "ofconsole") == 0
		   && grub_strcmp ("console", term->name) == 0))
             break;
         if (term == 0)
           for (term = *enabled; term; term = term->next)
             if (grub_strcmp (args[i], term->name) == 0
		 || (grub_strcmp (args[i], "ofconsole") == 0
		     && grub_strcmp ("console", term->name) == 0))
               break;
         if (term)
           break;
         if (again)
	   return grub_error (GRUB_ERR_BAD_ARGUMENT,
			      N_("terminal `%s' isn't found"),
			      args[i]);
         for (aut = autoloads; aut; aut = aut->next)
           if (grub_strcmp (args[i], aut->name) == 0
	       || (grub_strcmp (args[i], "ofconsole") == 0
		   && grub_strcmp ("console", aut->name) == 0)
	       || (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
		   && grub_memcmp (args[i], aut->name,
				   grub_strlen (aut->name) - 1) == 0))
             {
               grub_dl_t mod;
               mod = grub_dl_load (aut->modname);
               if (mod)
                 grub_dl_ref (mod);
               grub_errno = GRUB_ERR_NONE;
               break;
             }
	 if (grub_memcmp (args[i], "serial_usb",
				  sizeof ("serial_usb") - 1) == 0
	     && grub_term_poll_usb)
	   {
	     grub_term_poll_usb (1);
	     again = 1;
	     continue;
	   }
         if (!aut)
           return grub_error (GRUB_ERR_BAD_ARGUMENT,
			      N_("terminal `%s' isn't found"),
                              args[i]);
         again = 1;
       }
    }

  if (grub_strcmp (args[0], "--append") == 0)
    {
      for (i = 1; i < argc; i++)
       {
         for (term = *disabled; term; term = term->next)
           if (grub_strcmp (args[i], term->name) == 0
	       || (grub_strcmp (args[i], "ofconsole") == 0
		   && grub_strcmp ("console", term->name) == 0))
             break;
         if (term)
           {
              if (term->init && term->init (term) != GRUB_ERR_NONE)
                return grub_errno;

             grub_list_remove (GRUB_AS_LIST (term));
             grub_list_push (GRUB_AS_LIST_P (enabled), GRUB_AS_LIST (term));
           }
       }
      return GRUB_ERR_NONE;
    }

  if (grub_strcmp (args[0], "--remove") == 0)
    {
      for (i = 1; i < argc; i++)
       {
         for (term = *enabled; term; term = term->next)
           if (grub_strcmp (args[i], term->name) == 0
	       || (grub_strcmp (args[i], "ofconsole") == 0
		   && grub_strcmp ("console", term->name) == 0))
             break;
         if (term)
           {
             if (!term->next && term == *enabled)
               return grub_error (GRUB_ERR_BAD_ARGUMENT,
                                  "can't remove the last terminal");
             grub_list_remove (GRUB_AS_LIST (term));
             if (term->fini)
               term->fini (term);
             grub_list_push (GRUB_AS_LIST_P (disabled), GRUB_AS_LIST (term));
           }
       }
      return GRUB_ERR_NONE;
    }
  for (i = 0; i < argc; i++)
    {
      for (term = *disabled; term; term = term->next)
       if (grub_strcmp (args[i], term->name) == 0
	   || (grub_strcmp (args[i], "ofconsole") == 0
	       && grub_strcmp ("console", term->name) == 0))
         break;
      if (term)
       {
         if (term->init && term->init (term) != GRUB_ERR_NONE)
           return grub_errno;

         grub_list_remove (GRUB_AS_LIST (term));
         grub_list_push (GRUB_AS_LIST_P (enabled), GRUB_AS_LIST (term));
       }       
    }
  
  {
    struct abstract_terminal *next;
    for (term = *enabled; term; term = next)
      {
       next = term->next;
       for (i = 0; i < argc; i++)
         if (grub_strcmp (args[i], term->name) == 0
	     || (grub_strcmp (args[i], "ofconsole") == 0
		 && grub_strcmp ("console", term->name) == 0))
           break;
       if (i == argc)
         {
           if (!term->next && term == *enabled)
             return grub_error (GRUB_ERR_BAD_ARGUMENT,
                                "can't remove the last terminal");
           grub_list_remove (GRUB_AS_LIST (term));
           if (term->fini)
             term->fini (term);
           grub_list_push (GRUB_AS_LIST_P (disabled), GRUB_AS_LIST (term));
         }
      }
  }

  return GRUB_ERR_NONE;
}

static grub_err_t
grub_cmd_terminal_input (grub_command_t cmd __attribute__ ((unused)),
			 int argc, char **args)
{
  (void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, next);
  (void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, prev);
  (void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, name);
  (void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, init);
  (void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, fini);
  return handle_command (argc, args,
			 (struct abstract_terminal **) (void *) &grub_term_inputs,
			 (struct abstract_terminal **) (void *) &grub_term_inputs_disabled,
			 grub_term_input_autoload,
			 N_ ("Active input terminals:"),
			 N_ ("Available input terminals:"));
}

static grub_err_t
grub_cmd_terminal_output (grub_command_t cmd __attribute__ ((unused)),
                         int argc, char **args)
{
  (void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, next);
  (void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, prev);
  (void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, name);
  (void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, init);
  (void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, fini);
  return handle_command (argc, args,
			 (struct abstract_terminal **) (void *) &grub_term_outputs,
			 (struct abstract_terminal **) (void *) &grub_term_outputs_disabled,
			 grub_term_output_autoload,
			 N_ ("Active output terminals:"),
			 N_ ("Available output terminals:"));
}

static grub_command_t cmd_terminal_input, cmd_terminal_output;

GRUB_MOD_INIT(terminal)
{
  cmd_terminal_input =
    grub_register_command ("terminal_input", grub_cmd_terminal_input,
			   N_("[--append|--remove] "
			      "[TERMINAL1] [TERMINAL2] ..."),
			   N_("List or select an input terminal."));
  cmd_terminal_output =
    grub_register_command ("terminal_output", grub_cmd_terminal_output,
			   N_("[--append|--remove] "
			      "[TERMINAL1] [TERMINAL2] ..."),
			   N_("List or select an output terminal."));
}

GRUB_MOD_FINI(terminal)
{
  grub_unregister_command (cmd_terminal_input);
  grub_unregister_command (cmd_terminal_output);
}
Commit	Line	Data
0aa63398 VS	1	/*
0aa63398 VS	2	* GRUB -- GRand Unified Bootloader
9444b678	3	* Copyright (C) 2009,2010 Free Software Foundation, Inc.
0aa63398 VS	4	*
	5	* GRUB is free software: you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation, either version 3 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* GRUB is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	#include <grub/mm.h>
	20	#include <grub/dl.h>
	21	#include <grub/command.h>
	22	#include <grub/term.h>
	23	#include <grub/i18n.h>
	24	#include <grub/misc.h>
	25
e745cf0c VS	26	GRUB_MOD_LICENSE ("GPLv3+");
e745cf0c VS	27
33c1ed4c VS	28	struct grub_term_autoload *grub_term_input_autoload = NULL;
	29	struct grub_term_autoload *grub_term_output_autoload = NULL;
	30
6f8aaf68 VS	31	struct abstract_terminal
	32	{
	33	struct abstract_terminal *next;
87edb894	34	struct abstract_terminal *prev;
6f8aaf68	35	const char *name;
58664b94 VS	36	grub_err_t (init) (struct abstract_terminal term);
58664b94 VS	37	grub_err_t (fini) (struct abstract_terminal term);
6f8aaf68 VS	38	};
6f8aaf68 VS	39
d8a1cbbd	40	static grub_err_t
6f8aaf68 VS	41	handle_command (int argc, char args, struct abstract_terminal enabled,
	42	struct abstract_terminal **disabled,
	43	struct grub_term_autoload *autoloads,
	44	const char *active_str,
	45	const char *available_str)
0aa63398 VS	46	{
0aa63398 VS	47	int i;
6f8aaf68	48	struct abstract_terminal *term;
33c1ed4c	49	struct grub_term_autoload *aut;
0aa63398 VS	50
	51	if (argc == 0)
	52	{
6f8aaf68 VS	53	grub_puts_ (active_str);
	54	for (term = *enabled; term; term = term->next)
	55	grub_printf ("%s ", term->name);
0aa63398	56	grub_printf ("\n");
6f8aaf68 VS	57	grub_puts_ (available_str);
	58	for (term = *disabled; term; term = term->next)
	59	grub_printf ("%s ", term->name);
33c1ed4c	60	/* This is quadratic but we don't expect mode than 30 terminal
6f8aaf68 VS	61	modules ever. */
	62	for (aut = autoloads; aut; aut = aut->next)
	63	{
	64	for (term = *disabled; term; term = term->next)
75eb7d11 VS	65	if (grub_strcmp (term->name, aut->name) == 0
	66	\|\| (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
	67	&& grub_memcmp (term->name, aut->name,
	68	grub_strlen (aut->name) - 1) == 0))
6f8aaf68 VS	69	break;
	70	if (!term)
	71	for (term = *enabled; term; term = term->next)
75eb7d11 VS	72	if (grub_strcmp (term->name, aut->name) == 0
	73	\|\| (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
	74	&& grub_memcmp (term->name, aut->name,
	75	grub_strlen (aut->name) - 1) == 0))
6f8aaf68 VS	76	break;
	77	if (!term)
	78	grub_printf ("%s ", aut->name);
	79	}
0aa63398 VS	80	grub_printf ("\n");
	81	return GRUB_ERR_NONE;
	82	}
	83	i = 0;
	84
	85	if (grub_strcmp (args[0], "--append") == 0
abd1cab3	86	\|\| grub_strcmp (args[0], "--remove") == 0)
0aa63398 VS	87	i++;
	88
	89	if (i == argc)
	90	return grub_error (GRUB_ERR_BAD_ARGUMENT, N_ ("no terminal specified"));
	91
	92	for (; i < argc; i++)
	93	{
33c1ed4c VS	94	int again = 0;
33c1ed4c VS	95	while (1)
6f8aaf68 VS	96	{
6f8aaf68 VS	97	for (term = *disabled; term; term = term->next)
ca8c0baf VS	98	if (grub_strcmp (args[i], term->name) == 0
	99	\|\| (grub_strcmp (args[i], "ofconsole") == 0
	100	&& grub_strcmp ("console", term->name) == 0))
6f8aaf68 VS	101	break;
	102	if (term == 0)
	103	for (term = *enabled; term; term = term->next)
ca8c0baf VS	104	if (grub_strcmp (args[i], term->name) == 0
	105	\|\| (grub_strcmp (args[i], "ofconsole") == 0
	106	&& grub_strcmp ("console", term->name) == 0))
6f8aaf68 VS	107	break;
	108	if (term)
	109	break;
	110	if (again)
d745dda7	111	return grub_error (GRUB_ERR_BAD_ARGUMENT,
d61386e2	112	N_("terminal `%s' isn't found"),
d745dda7	113	args[i]);
6f8aaf68	114	for (aut = autoloads; aut; aut = aut->next)
75eb7d11	115	if (grub_strcmp (args[i], aut->name) == 0
ca8c0baf VS	116	\|\| (grub_strcmp (args[i], "ofconsole") == 0
ca8c0baf VS	117	&& grub_strcmp ("console", aut->name) == 0)
75eb7d11 VS	118	\|\| (aut->name[0] && aut->name[grub_strlen (aut->name) - 1] == '*'
	119	&& grub_memcmp (args[i], aut->name,
	120	grub_strlen (aut->name) - 1) == 0))
6f8aaf68 VS	121	{
	122	grub_dl_t mod;
	123	mod = grub_dl_load (aut->modname);
	124	if (mod)
	125	grub_dl_ref (mod);
	126	grub_errno = GRUB_ERR_NONE;
	127	break;
	128	}
d745dda7 VS	129	if (grub_memcmp (args[i], "serial_usb",
	130	sizeof ("serial_usb") - 1) == 0
	131	&& grub_term_poll_usb)
	132	{
	133	grub_term_poll_usb (1);
	134	again = 1;
	135	continue;
	136	}
6f8aaf68	137	if (!aut)
d61386e2 VS	138	return grub_error (GRUB_ERR_BAD_ARGUMENT,
d61386e2 VS	139	N_("terminal `%s' isn't found"),
6f8aaf68 VS	140	args[i]);
	141	again = 1;
	142	}
0aa63398 VS	143	}
	144
	145	if (grub_strcmp (args[0], "--append") == 0)
	146	{
	147	for (i = 1; i < argc; i++)
6f8aaf68 VS	148	{
6f8aaf68 VS	149	for (term = *disabled; term; term = term->next)
ca8c0baf VS	150	if (grub_strcmp (args[i], term->name) == 0
	151	\|\| (grub_strcmp (args[i], "ofconsole") == 0
	152	&& grub_strcmp ("console", term->name) == 0))
6f8aaf68 VS	153	break;
	154	if (term)
	155	{
58664b94	156	if (term->init && term->init (term) != GRUB_ERR_NONE)
cba98e8d RM	157	return grub_errno;
cba98e8d RM	158
87edb894	159	grub_list_remove (GRUB_AS_LIST (term));
6f8aaf68 VS	160	grub_list_push (GRUB_AS_LIST_P (enabled), GRUB_AS_LIST (term));
	161	}
	162	}
0aa63398 VS	163	return GRUB_ERR_NONE;
	164	}
	165
	166	if (grub_strcmp (args[0], "--remove") == 0)
	167	{
	168	for (i = 1; i < argc; i++)
6f8aaf68 VS	169	{
6f8aaf68 VS	170	for (term = *enabled; term; term = term->next)
ca8c0baf VS	171	if (grub_strcmp (args[i], term->name) == 0
	172	\|\| (grub_strcmp (args[i], "ofconsole") == 0
	173	&& grub_strcmp ("console", term->name) == 0))
6f8aaf68 VS	174	break;
	175	if (term)
	176	{
	177	if (!term->next && term == *enabled)
	178	return grub_error (GRUB_ERR_BAD_ARGUMENT,
	179	"can't remove the last terminal");
87edb894	180	grub_list_remove (GRUB_AS_LIST (term));
6f8aaf68	181	if (term->fini)
58664b94	182	term->fini (term);
6f8aaf68 VS	183	grub_list_push (GRUB_AS_LIST_P (disabled), GRUB_AS_LIST (term));
	184	}
	185	}
0aa63398 VS	186	return GRUB_ERR_NONE;
	187	}
	188	for (i = 0; i < argc; i++)
	189	{
6f8aaf68	190	for (term = *disabled; term; term = term->next)
ca8c0baf VS	191	if (grub_strcmp (args[i], term->name) == 0
	192	\|\| (grub_strcmp (args[i], "ofconsole") == 0
	193	&& grub_strcmp ("console", term->name) == 0))
6f8aaf68	194	break;
0aa63398	195	if (term)
6f8aaf68	196	{
58664b94	197	if (term->init && term->init (term) != GRUB_ERR_NONE)
6f8aaf68	198	return grub_errno;
cba98e8d	199
87edb894	200	grub_list_remove (GRUB_AS_LIST (term));
6f8aaf68 VS	201	grub_list_push (GRUB_AS_LIST_P (enabled), GRUB_AS_LIST (term));
6f8aaf68 VS	202	}
0aa63398	203	}
6f8aaf68	204
0aa63398	205	{
6f8aaf68 VS	206	struct abstract_terminal *next;
6f8aaf68 VS	207	for (term = *enabled; term; term = next)
0aa63398	208	{
6f8aaf68 VS	209	next = term->next;
6f8aaf68 VS	210	for (i = 0; i < argc; i++)
ca8c0baf VS	211	if (grub_strcmp (args[i], term->name) == 0
	212	\|\| (grub_strcmp (args[i], "ofconsole") == 0
	213	&& grub_strcmp ("console", term->name) == 0))
6f8aaf68 VS	214	break;
	215	if (i == argc)
	216	{
	217	if (!term->next && term == *enabled)
	218	return grub_error (GRUB_ERR_BAD_ARGUMENT,
	219	"can't remove the last terminal");
87edb894	220	grub_list_remove (GRUB_AS_LIST (term));
6f8aaf68	221	if (term->fini)
58664b94	222	term->fini (term);
6f8aaf68 VS	223	grub_list_push (GRUB_AS_LIST_P (disabled), GRUB_AS_LIST (term));
6f8aaf68 VS	224	}
0aa63398 VS	225	}
	226	}
	227
	228	return GRUB_ERR_NONE;
	229	}
	230
d8a1cbbd	231	static grub_err_t
6f8aaf68	232	grub_cmd_terminal_input (grub_command_t cmd __attribute__ ((unused)),
0aa63398 VS	233	int argc, char **args)
0aa63398 VS	234	{
6f8aaf68	235	(void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, next);
87edb894	236	(void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, prev);
6f8aaf68 VS	237	(void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, name);
	238	(void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, init);
	239	(void) GRUB_FIELD_MATCH (grub_term_inputs, struct abstract_terminal *, fini);
	240	return handle_command (argc, args,
fc836af9 VS	241	(struct abstract_terminal *) (void ) &grub_term_inputs,
	242	(struct abstract_terminal *) (void ) &grub_term_inputs_disabled,
	243	grub_term_input_autoload,
	244	N_ ("Active input terminals:"),
	245	N_ ("Available input terminals:"));
6f8aaf68	246	}
0aa63398	247
6f8aaf68 VS	248	static grub_err_t
	249	grub_cmd_terminal_output (grub_command_t cmd __attribute__ ((unused)),
	250	int argc, char **args)
	251	{
	252	(void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, next);
87edb894	253	(void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, prev);
6f8aaf68 VS	254	(void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, name);
	255	(void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, init);
	256	(void) GRUB_FIELD_MATCH (grub_term_outputs, struct abstract_terminal *, fini);
fc836af9 VS	257	return handle_command (argc, args,
	258	(struct abstract_terminal *) (void ) &grub_term_outputs,
	259	(struct abstract_terminal *) (void ) &grub_term_outputs_disabled,
	260	grub_term_output_autoload,
	261	N_ ("Active output terminals:"),
	262	N_ ("Available output terminals:"));
0aa63398 VS	263	}
	264
	265	static grub_command_t cmd_terminal_input, cmd_terminal_output;
	266
	267	GRUB_MOD_INIT(terminal)
	268	{
	269	cmd_terminal_input =
	270	grub_register_command ("terminal_input", grub_cmd_terminal_input,
d8b5cd40 VS	271	N_("[--append\|--remove] "
	272	"[TERMINAL1] [TERMINAL2] ..."),
	273	N_("List or select an input terminal."));
0aa63398 VS	274	cmd_terminal_output =
0aa63398 VS	275	grub_register_command ("terminal_output", grub_cmd_terminal_output,
d8b5cd40 VS	276	N_("[--append\|--remove] "
	277	"[TERMINAL1] [TERMINAL2] ..."),
	278	N_("List or select an output terminal."));
0aa63398 VS	279	}
	280
	281	GRUB_MOD_FINI(terminal)
	282	{
	283	grub_unregister_command (cmd_terminal_input);
	284	grub_unregister_command (cmd_terminal_output);
	285	}