Enable/disable SystemV init code at compile time

* configure.ac: New option --enable-sysvinit. Disable the init
code if RUN_LVL is not available.
(PIES_SYSVINIT_ENABLED): New configuration define.
(PIES_COND_SYSVINIT): New condition
Print configuration settings summary.
* src/pies.h (is_sysvinit): Check for PIES_SYSVINIT_ENABLED.
(SYSVINIT_ACTIVE): New macro.
* grecs: Upgrade.
* src/Makefile.am: Conditionally link sysvinit-related code.
* src/cmdline.opt: Disable the --telinit option if sysvinit support
is not available.
(parse_options): Use SYSVINIT_ACTIVE in the conditional.
* src/comp.c (component_verify): Check if component definition is
allowed by the current state of the sysvinit support.
* src/ctl.c: Disable the /runlevel entry point if sysvinit support
is not compiled.
* src/diag.c (stderr_open): Make sure sysvinit-related code is not
compiled if the sysvinit support is not available.
* src/pies.c (config_syntax_tab): Add entry for CONF_INITTAB only if
sysvinit support is available.
(_cb_initdefault,_cb_runlevels): Remove. Use cb_initdefault and cb_runlevels
instead.
(component_keywords): Disable runlevels without sysvinit support.
(pies_keywords): Same for initdefault.
Use SYSVINIT_ACTIVE to suppress compilation of sysvinit code without
sysvinit support.
* src/progman.c: Use SYSVINIT_ACTIVE to suppress compilation of
sysvinit code without sysvinit support.
* src/sysvinit.c (cb_initdefault,cb_runlevels): New functions.

1 files changed, 57 insertions, 7 deletions

diff --git a/src/sysvinit.c b/src/sysvinit.c
index 3ba986b..c5d25da 100644
--- a/src/sysvinit.c
+++ b/src/sysvinit.c
@@ -55,13 +55,13 @@ static int boot_trans_tab[max_boot_state][sizeof(valid_runlevels)-1]  = {
 };
 
 enum boot_state boot_state;
-int runlevel = 0;
-int prevlevel = 'N';
+static int runlevel = 0;
+static int prevlevel = 'N';
 
-int initdefault;               /* Default runlevel */
-int dfl_level;
-char *emergency_shell = EMERGENCY_SHELL;
-int emergency;
+int initdefault;
+static int dfl_level;
+static char *emergency_shell = EMERGENCY_SHELL;
+static int emergency;
 
 static int inittrans (void);
 
@@ -340,7 +340,7 @@ is_valid_runlevel (int c)
 {
   return !!strchr (valid_runlevel_arg, c);
 }
-
+
 #define ENVAR_CONSOLE "CONSOLE="
 #define ENVTMPL_CONSOLE "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
 
@@ -1283,3 +1283,53 @@ sysvinit_parse_argv (int argc, char **argv)
 	dfl_level = c;
     }	  
 }
+
+int
+cb_initdefault (enum grecs_callback_command cmd,
+		grecs_node_t *node,
+		void *varptr, void *cb_data)
+{
+  grecs_locus_t *locus = &node->locus;
+  grecs_value_t *value = node->v.value;
+
+  if (grecs_assert_node_value_type (cmd, node, GRECS_TYPE_STRING))
+    return 1;
+  if (strlen (value->v.string) != 1)
+    {
+      grecs_error (locus, 0, _("argument must be a single character"));
+      return 1;
+    }
+  if (!is_valid_runlevel (value->v.string[0]))
+    {
+      grecs_error (locus, 0, _("not a valid runlevel"));
+      return 1;
+    }
+  initdefault = toupper (value->v.string[0]);
+  return 0;
+}
+
+int
+cb_runlevels (enum grecs_callback_command cmd,
+	      grecs_node_t *node,
+	      void *varptr, void *cb_data)
+{
+  grecs_locus_t *locus = &node->locus;
+  grecs_value_t *value = node->v.value;
+  char **sptr = varptr, *p;
+
+  if (grecs_assert_node_value_type (cmd, node, GRECS_TYPE_STRING))
+    return 1;
+  for (p = value->v.string; *p; p++)
+    {
+      if (!is_valid_runlevel (*p))
+	{
+	  grecs_error (locus, 0, _("not a valid runlevel: %c"), *p);
+	  return 1;
+	}
+    }
+  *sptr = grecs_strdup (value->v.string);
+  for (p = *sptr; *p; p++)
+    *p = toupper (*p);
+  return 0;
+}
+