[PATCH] Refer to kernel of FreeBSD as "kFreeBSD"

[Robert Millan <rmh@aybabtu.com>]

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This fixes some confusing command names.  They weren't present in 1.96, so
I'd like to stabilize those before 1.97 release.

Note: Some string lengths were hardcoded, and they're being replaced with
sizeof() statements.  I triple-checked them for off-by-one mistakes, but it
doesn't hurt if someone else reviews it.  Please avoid hardcoding constant
string lengths!  It makes it more error-prone to change those strings later.

-- 
Robert Millan

  The DRM opt-in fallacy: "Your data belongs to us. We will decide when (and
  how) you may access your data; but nobody's threatening your freedom: we
  still allow you to remove your data and not access it at all."

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2009-10-14  Robert Millan  <rmh.grub@aybabtu.com>

	Refer to kernel of FreeBSD "kFreeBSD" to avoid confusion between
	the Operating System (FreeBSD) and its kernel (kernel of FreeBSD).

	* loader/i386/bsd.c (grub_freebsd_boot): Read kernel environment
	from "kFreeBSD" namespace (rather than "FreeBSD").  Update all
	users.

	(GRUB_MOD_INIT (bsd)): Rename "freebsd" command to "kfreebsd",
	"openbsd" to "kopenbsd", "netbsd" to "knetbsd", "freebsd_loadenv"
	to "kfreebsd_loadenv", "freebsd_module" to "kfreebsd_module",
	and "freebsd_module_elf" to "kfreebsd_module_elf".  Update all
	users.

Index: loader/i386/bsd.c
===================================================================
--- loader/i386/bsd.c	(revision 2629)
+++ loader/i386/bsd.c	(working copy)
@@ -444,9 +444,9 @@ grub_freebsd_boot (void)
   auto int iterate_env (struct grub_env_var *var);
   int iterate_env (struct grub_env_var *var)
   {
-    if ((!grub_memcmp (var->name, "FreeBSD.", 8)) && (var->name[8]))
+    if ((!grub_memcmp (var->name, "kFreeBSD.", sizeof("kFreeBSD.") - 1)) && (var->name[sizeof("kFreeBSD.") - 1]))
       {
-	grub_strcpy (p, &var->name[8]);
+	grub_strcpy (p, &var->name[sizeof("kFreeBSD.") - 1]);
 	p += grub_strlen (p);
 	*(p++) = '=';
 	grub_strcpy (p, var->value);
@@ -1112,12 +1112,12 @@ grub_cmd_freebsd_loadenv (grub_command_t cmd __att
 
       if (*curr)
 	{
-	  char name[grub_strlen (curr) + 8 + 1];
+	  char name[grub_strlen (curr) + sizeof("kFreeBSD.")];
 
 	  if (*p == '"')
 	    p++;
 
-	  grub_sprintf (name, "FreeBSD.%s", curr);
+	  grub_sprintf (name, "kFreeBSD.%s", curr);
 	  if (grub_env_set (name, p))
 	    goto fail;
 	}
@@ -1252,26 +1252,26 @@ static grub_command_t cmd_freebsd_module_elf;
 
 GRUB_MOD_INIT (bsd)
 {
-  cmd_freebsd = grub_register_extcmd ("freebsd", grub_cmd_freebsd,
+  cmd_freebsd = grub_register_extcmd ("kfreebsd", grub_cmd_freebsd,
 				      GRUB_COMMAND_FLAG_BOTH,
-				      "freebsd FILE", "Load kernel of FreeBSD.",
+				      "kfreebsd FILE", "Load kernel of FreeBSD.",
 				      freebsd_opts);
-  cmd_openbsd = grub_register_extcmd ("openbsd", grub_cmd_openbsd,
+  cmd_openbsd = grub_register_extcmd ("kopenbsd", grub_cmd_openbsd,
 				      GRUB_COMMAND_FLAG_BOTH,
-				      "openbsd FILE", "Load kernel of OpenBSD.",
+				      "kopenbsd FILE", "Load kernel of OpenBSD.",
 				      openbsd_opts);
-  cmd_netbsd = grub_register_extcmd ("netbsd", grub_cmd_netbsd,
+  cmd_netbsd = grub_register_extcmd ("knetbsd", grub_cmd_netbsd,
 				     GRUB_COMMAND_FLAG_BOTH,
-				     "netbsd FILE", "Load kernel of NetBSD.",
+				     "knetbsd FILE", "Load kernel of NetBSD.",
 				     netbsd_opts);
   cmd_freebsd_loadenv =
-    grub_register_command ("freebsd_loadenv", grub_cmd_freebsd_loadenv,
+    grub_register_command ("kfreebsd_loadenv", grub_cmd_freebsd_loadenv,
 			   0, "load FreeBSD env");
   cmd_freebsd_module =
-    grub_register_command ("freebsd_module", grub_cmd_freebsd_module,
+    grub_register_command ("kfreebsd_module", grub_cmd_freebsd_module,
 			   0, "load FreeBSD kernel module");
   cmd_freebsd_module_elf =
-    grub_register_command ("freebsd_module_elf", grub_cmd_freebsd_module_elf,
+    grub_register_command ("kfreebsd_module_elf", grub_cmd_freebsd_module_elf,
 			   0, "load FreeBSD kernel module (ELF)");
 
   my_mod = mod;
Index: util/grub.d/10_freebsd.in
===================================================================
--- util/grub.d/10_freebsd.in	(revision 2629)
+++ util/grub.d/10_freebsd.in	(working copy)
@@ -60,17 +60,17 @@ menuentry "${OS}" {
 EOF
   prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/\t/"
   cat << EOF
-	freebsd			${kfreebsd_rel_dirname}/${kfreebsd_basename}
+	kfreebsd			${kfreebsd_rel_dirname}/${kfreebsd_basename}
 EOF
 
   if [ x"$devices" != "x" ] ; then
     cat << EOF
-	freebsd_loadenv		${devices_rel_dirname}/${devices_basename}
+	kfreebsd_loadenv		${devices_rel_dirname}/${devices_basename}
 EOF
   fi
   cat << EOF
-	set FreeBSD.vfs.root.mountfrom=${kfreebsd_fs}:${GRUB_DEVICE}
-	set FreeBSD.vfs.root.mountfrom.options=rw
+	set kFreeBSD.vfs.root.mountfrom=${kfreebsd_fs}:${GRUB_DEVICE}
+	set kFreeBSD.vfs.root.mountfrom.options=rw
 }
 EOF
 fi