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/*
* runlevels.c
*
* Functions dealing with runlevels.
*
* Copyright (C) 2004,2005 Martin Schlemmer <azarah@nosferatu.za.org>
*
*
* 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 version 2 of the License.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Header$
*/
#include <errno.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include "rcscripts.h"
static char ** get_runlevel_dirs (void);
LIST_HEAD (runlevel_list);
char **
get_runlevel_dirs (void)
{
char **dir_list = NULL;
char **runlvl_list = NULL;
char *dir_item;
int count;
dir_list = ls_dir (RUNLEVELS_DIR, 0);
if (NULL == dir_list)
{
errno = ENOENT;
DBG_MSG ("Failed to get any entries in '%' !\n", RUNLEVELS_DIR);
return NULL;
}
str_list_for_each_item (dir_list, dir_item, count)
{
if (is_dir (dir_item, 0))
{
char *tmp_str;
tmp_str = xstrndup (dir_item, strlen (dir_item));
if (NULL == tmp_str)
goto error;
str_list_add_item (runlvl_list, tmp_str, error);
}
}
str_list_free (dir_list);
if (!check_strv (runlvl_list))
{
if (NULL != runlvl_list)
str_list_free (runlvl_list);
}
return runlvl_list;
error:
if (NULL != dir_list)
str_list_free (dir_list);
if (NULL != runlvl_list)
str_list_free (runlvl_list);
return NULL;
}
int
get_runlevels (void)
{
char **runlvl_list = NULL;
char *runlevel;
int count;
runlvl_list = get_runlevel_dirs ();
if (NULL == runlvl_list)
{
DBG_MSG ("Failed to get any runlevels\n");
return -1;
}
str_list_for_each_item (runlvl_list, runlevel, count)
{
runlevel_info_t *runlevel_info;
char **dir_list = NULL;
char *dir_item;
int dir_count;
DBG_MSG ("Adding runlevel '%s'\n", gbasename (runlevel));
runlevel_info = xmalloc (sizeof (runlevel_info_t));
if (NULL == runlevel_info)
goto error;
runlevel_info->dirname = xstrndup (runlevel, strlen (runlevel));
if (NULL == runlevel_info->dirname)
goto error;
INIT_LIST_HEAD (&runlevel_info->entries);
dir_list = ls_dir (runlevel, 0);
if (NULL == dir_list)
{
if (0 != errno)
goto error;
goto no_entries;
}
str_list_for_each_item (dir_list, dir_item, dir_count)
{
rcscript_info_t *script_info;
rcscript_info_t *new_script_info = NULL;
if (!is_link (dir_item))
{
DBG_MSG ("Skipping non symlink '%s' !\n", dir_item);
continue;
}
script_info = get_rcscript_info (gbasename (dir_item));
if (NULL == script_info)
{
DBG_MSG ("Skipping invalid entry '%s' !\n", dir_item);
continue;
}
new_script_info = xmalloc (sizeof (rcscript_info_t));
if (NULL == new_script_info)
{
str_list_free (dir_list);
goto error;
}
DBG_MSG ("Adding '%s' to runlevel '%s'\n",
gbasename (script_info->filename),
gbasename (runlevel));
/* Add a copy, as the next and prev pointers will be changed */
memcpy (new_script_info, script_info, sizeof (rcscript_info_t));
list_add_tail (&new_script_info->node, &runlevel_info->entries);
}
str_list_free (dir_list);
no_entries:
list_add_tail (&runlevel_info->node, &runlevel_list);
}
str_list_free (runlvl_list);
return 0;
error:
if (NULL != runlvl_list)
str_list_free (runlvl_list);
return -1;
}
runlevel_info_t *
get_runlevel_info (const char *runlevel)
{
runlevel_info_t *info;
if (!check_arg_str (runlevel))
return NULL;
list_for_each_entry (info, &runlevel_list, node)
{
if ((strlen (runlevel) == strlen (gbasename (info->dirname)))
&& (0 == strncmp (runlevel, gbasename (info->dirname),
strlen (runlevel))))
return info;
}
return NULL;
}
bool
is_runlevel (const char *runlevel)
{
char *runlevel_dir = NULL;
int len;
/* strlen (RUNLEVELS_DIR) + strlen (runlevel) + "/" + '\0' */
len = strlen (RUNLEVELS_DIR) + strlen (runlevel) + 2;
runlevel_dir = xmalloc (sizeof (char) * len);
if (NULL == runlevel_dir)
return FALSE;
snprintf (runlevel_dir, len, "%s/%s", RUNLEVELS_DIR, runlevel);
if (is_dir (runlevel_dir, 0))
return TRUE;
return FALSE;
}
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