Implement legacy_kernel and legacy_initrd commands
This commit is contained in:
Vladimir 'phcoder' Serbinenko
parent
661cf42231
commit
8fc6a27147
2 changed files with 194 additions and 4 deletions
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@ -167,13 +167,199 @@ grub_cmd_legacy_configfile (struct grub_command *cmd __attribute__ ((unused)),
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return ret;
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}
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static grub_command_t cmd_source, cmd_configfile;
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static enum
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{
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GUESS_IT, LINUX, MULTIBOOT, KFREEBSD, KNETBSD, KOPENBSD
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} kernel_type;
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static grub_err_t
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grub_cmd_legacy_kernel (struct grub_command *mycmd __attribute__ ((unused)),
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int argc, char **args)
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{
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int i;
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int no_mem_option = 0;
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struct grub_command *cmd;
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for (i = 0; i < 2; i++)
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{
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/* FIXME: really support this. */
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if (argc >= 1 && grub_strcmp (args[0], "--no-mem-option") == 0)
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{
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no_mem_option = 1;
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argc--;
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args++;
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continue;
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}
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/* FIXME: what's the difference? */
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if (argc >= 1 && (grub_strcmp (args[0], "--type=linux") == 0
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|| grub_strcmp (args[0], "--type=biglinux") == 0))
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{
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kernel_type = LINUX;
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argc--;
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args++;
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continue;
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}
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if (argc >= 1 && grub_strcmp (args[0], "--type=multiboot") == 0)
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{
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kernel_type = MULTIBOOT;
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argc--;
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args++;
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continue;
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}
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if (argc >= 1 && grub_strcmp (args[0], "--type=freebsd") == 0)
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{
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kernel_type = KFREEBSD;
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argc--;
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args++;
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continue;
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}
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if (argc >= 1 && grub_strcmp (args[0], "--type=openbsd") == 0)
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{
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kernel_type = KOPENBSD;
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argc--;
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args++;
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continue;
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}
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if (argc >= 1 && grub_strcmp (args[0], "--type=netbsd") == 0)
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{
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kernel_type = KNETBSD;
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argc--;
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args++;
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continue;
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}
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}
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if (!argc)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, "filename required");
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do
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{
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/* First try Linux. */
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if (kernel_type == GUESS_IT || kernel_type == LINUX)
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{
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cmd = grub_command_find ("linux16");
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if (cmd)
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{
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if (!(cmd->func) (cmd, argc, args))
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{
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kernel_type = LINUX;
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return GRUB_ERR_NONE;
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}
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}
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grub_errno = GRUB_ERR_NONE;
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}
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/* Then multiboot. */
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/* FIXME: dublicate multiboot filename. */
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if (kernel_type == GUESS_IT || kernel_type == MULTIBOOT)
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{
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cmd = grub_command_find ("multiboot");
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if (cmd)
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{
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if (!(cmd->func) (cmd, argc, args))
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{
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kernel_type = MULTIBOOT;
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return GRUB_ERR_NONE;
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}
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}
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grub_errno = GRUB_ERR_NONE;
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}
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/* k*BSD didn't really work well with grub-legacy. */
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if (kernel_type == GUESS_IT || kernel_type == KFREEBSD)
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{
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cmd = grub_command_find ("kfreebsd");
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if (cmd)
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{
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if (!(cmd->func) (cmd, argc, args))
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{
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kernel_type = KFREEBSD;
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return GRUB_ERR_NONE;
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}
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}
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grub_errno = GRUB_ERR_NONE;
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}
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if (kernel_type == GUESS_IT || kernel_type == KNETBSD)
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{
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cmd = grub_command_find ("knetbsd");
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if (cmd)
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{
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if (!(cmd->func) (cmd, argc, args))
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{
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kernel_type = KNETBSD;
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return GRUB_ERR_NONE;
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}
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}
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grub_errno = GRUB_ERR_NONE;
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}
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if (kernel_type == GUESS_IT || kernel_type == KOPENBSD)
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{
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cmd = grub_command_find ("kopenbsd");
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if (cmd)
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{
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if (!(cmd->func) (cmd, argc, args))
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{
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kernel_type = KOPENBSD;
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return GRUB_ERR_NONE;
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}
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}
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grub_errno = GRUB_ERR_NONE;
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}
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}
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while (0);
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return grub_error (GRUB_ERR_BAD_OS, "couldn't load file %s\n",
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args[0]);
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}
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static grub_err_t
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grub_cmd_legacy_initrd (struct grub_command *mycmd __attribute__ ((unused)),
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int argc, char **args)
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{
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struct grub_command *cmd;
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if (kernel_type == LINUX)
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{
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cmd = grub_command_find ("initrd16");
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if (!cmd)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, "command initrd16 not found");
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return cmd->func (cmd, argc, args);
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}
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if (kernel_type == MULTIBOOT)
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{
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/* FIXME: dublicate module filename. */
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cmd = grub_command_find ("module");
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if (!cmd)
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return grub_error (GRUB_ERR_BAD_ARGUMENT, "command module not found");
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return cmd->func (cmd, argc, args);
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}
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return grub_error (GRUB_ERR_BAD_ARGUMENT,
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"no kernel with module support is loaded in legacy way");
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}
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static grub_command_t cmd_source, cmd_configfile, cmd_kernel, cmd_initrd;
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GRUB_MOD_INIT(legacycfg)
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{
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cmd_source = grub_register_command ("legacy_source",
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grub_cmd_legacy_source,
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N_("FILE"), N_("Parse legacy config"));
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cmd_kernel = grub_register_command ("legacy_kernel",
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grub_cmd_legacy_kernel,
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N_("[--no-mem-option] [--type=TYPE] FILE [ARG ...]"),
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N_("Simulate grub-legacy kernel command"));
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cmd_initrd = grub_register_command ("legacy_initrd",
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grub_cmd_legacy_initrd,
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N_("FILE [ARG ...]"),
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N_("Simulate grub-legacy initrd command"));
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cmd_configfile = grub_register_command ("legacy_configfile",
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grub_cmd_legacy_configfile,
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N_("FILE"),
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@ -184,4 +370,6 @@ GRUB_MOD_FINI(legacycfg)
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{
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grub_unregister_command (cmd_source);
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grub_unregister_command (cmd_configfile);
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grub_unregister_command (cmd_kernel);
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grub_unregister_command (cmd_initrd);
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}
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@ -113,14 +113,16 @@ struct legacy_command legacy_commands[] =
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" its partition type code."},
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/* ifconfig unsupported. */
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/* impsprobe unsupported. */
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/* FIXME: Implement command. */
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/* FIXME: dublicate multiboot filename. */
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{"initrd", "legacy_initrd '%s' %s\n", 2, {TYPE_FILE, TYPE_REST_VERBATIM}, 0,
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"FILE [ARG ...]",
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"Load an initial ramdisk FILE for a Linux format boot image and set the"
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" appropriate parameters in the Linux setup area in memory."},
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/* install unsupported. */
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/* ioprobe unsupported. */
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/* FIXME: implement command. */
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/* FIXME: really support --no-mem-option. */
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/* FIXME: distinguish linux and biglinux. */
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/* FIXME: dublicate multiboot filename. */
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{"kernel", "legacy_kernel %s %s '%s' %s\n", 4, {TYPE_TYPE_OR_NOMEM_OPTION,
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TYPE_TYPE_OR_NOMEM_OPTION,
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TYPE_FILE,
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@ -133,7 +135,7 @@ struct legacy_command legacy_commands[] =
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" \"netbsd\", \"freebsd\", \"openbsd\", \"linux\", \"biglinux\" and"
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" \"multiboot\". The option --no-mem-option tells GRUB not to pass a"
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" Linux's mem option automatically."},
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/* lock is handled separately. */
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/* lock is unsupported. */
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{"makeactive", "parttool \"$root\" boot+\n", 0, {}, 0, 0,
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"Set the active partition on the root disk to GRUB's root device."
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" This command is limited to _primary_ PC partitions on a hard disk."},
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