X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fyaboot-parser.c;h=aa993928f86c5b6121f6bce95c094f2b8f746501;hp=c47dee13c00189d0d9e3b71da9f018e78d3b7127;hb=8fa3f3bd22e66329ac0dd65a82bf8eb554e2364d;hpb=0967cb518d764990eaebc51cb987cf4444a5afd3;ds=sidebyside

diff --git a/discover/yaboot-parser.c b/discover/yaboot-parser.c
index c47dee1..aa99392 100644
--- a/discover/yaboot-parser.c
+++ b/discover/yaboot-parser.c
@@ -1,56 +1,189 @@
-#define _GNU_SOURCE
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
 
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
+#include <ctype.h>
 
 #include "log/log.h"
 #include "talloc/talloc.h"
-#include "pb-protocol/pb-protocol.h"
+#include "types/types.h"
 #include "parser-conf.h"
 #include "parser-utils.h"
-#include "paths.h"
+#include "resource.h"
 
 struct yaboot_state {
-	struct boot_option *opt;
-	const char *desc_image;
-	char *desc_initrd;
-	int found_suse;
 	int globals_done;
-	const char *const *known_names;
+
+	/* current option data */
+	struct discover_boot_option *opt;
+	const char *device;
+	const char *partition;
+	const char *boot_image;
+	const char *initrd;
+	const char *initrd_size;
+	const char *literal;
+	const char *ramdisk;
+	const char *root;
+	bool read_only;
+	bool read_write;
 };
 
+static struct discover_boot_option *state_start_new_option(
+		struct conf_context *conf,
+		struct yaboot_state *state)
+{
+	state->opt = discover_boot_option_create(conf->dc, conf->dc->device);
+	state->opt->option->boot_args = talloc_strdup(state->opt->option, "");
+
+	/* old allocated values will get freed with the state */
+	state->device = conf_get_global_option(conf, "device");
+	state->partition = conf_get_global_option(conf, "partition");
+	state->initrd_size = conf_get_global_option(conf, "initrd_size");
+	state->literal = conf_get_global_option(conf, "literal");
+	state->ramdisk = conf_get_global_option(conf, "ramdisk");
+	state->root = conf_get_global_option(conf, "root");
+
+	return state->opt;
+}
+
+static struct resource *create_yaboot_devpath_resource(
+		struct yaboot_state *state,
+		struct conf_context *conf,
+		const char *path)
+{
+	struct discover_boot_option *opt = state->opt;
+	const char *dev, *part, *devpos;
+	struct resource *res;
+	char *devpath, *devstr;
+
+	dev = state->device;
+	part = state->partition;
+
+	if (!dev)
+		dev = conf_get_global_option(conf, "device");
+	if (!part)
+		part = conf_get_global_option(conf, "partition");
+
+	if (strchr(path, ':')) {
+		devpath = talloc_strdup(conf, path);
+
+	} else if (dev && part) {
+		devpos = &dev[strlen(dev) - 1];
+		if (isdigit(*devpos)) {
+			while (isdigit(*devpos))
+				devpos--;
+
+			devstr = talloc_strndup(conf, dev, devpos - dev + 1);
+			devpath = talloc_asprintf(conf, "%s%s:%s", devstr,
+					part, path);
+			talloc_free(devstr);
+		} else {
+			devpath = talloc_asprintf(conf,
+					"%s%s:%s", dev, part, path);
+		}
+	} else if (dev) {
+		devpath = talloc_asprintf(conf, "%s:%s", dev, path);
+	} else {
+		devpath = talloc_strdup(conf, path);
+	}
+
+	res = create_devpath_resource(opt, conf->dc->device, devpath);
+
+	talloc_free(devpath);
+
+	return res;
+}
+
 static void yaboot_finish(struct conf_context *conf)
 {
 	struct yaboot_state *state = conf->parser_info;
+	const char *default_label;
+	struct boot_option *opt;
 
-	assert(state->desc_image);
-	assert(state->opt);
-	assert(state->opt->name);
-	assert(state->opt->boot_args);
+	if (!state->opt)
+		return;
 
-	state->opt->description = talloc_asprintf(state->opt, "%s %s %s",
-		state->desc_image,
-		(state->desc_initrd ? state->desc_initrd : ""),
-		state->opt->boot_args);
+	opt = state->opt->option;
+	assert(opt);
+	assert(opt->name);
+	assert(opt->boot_args);
+
+	/* populate the boot option from state data */
+	state->opt->boot_image = create_yaboot_devpath_resource(state,
+				conf, state->boot_image);
+	if (state->initrd) {
+		state->opt->initrd = create_yaboot_devpath_resource(state,
+				conf, state->initrd);
+	}
+
+	if (state->initrd_size) {
+		opt->boot_args = talloc_asprintf(opt, "ramdisk_size=%s %s",
+					state->initrd_size, opt->boot_args);
+	}
+
+	if (state->ramdisk) {
+		opt->boot_args = talloc_asprintf(opt, "ramdisk=%s %s",
+					state->initrd_size, opt->boot_args);
+	}
 
-	talloc_free(state->desc_initrd);
-	state->desc_initrd = NULL;
+	if (state->root) {
+		opt->boot_args = talloc_asprintf(opt, "root=%s %s",
+					state->root, opt->boot_args);
+	}
 
-	conf_strip_str(state->opt->boot_args);
-	conf_strip_str(state->opt->description);
+	if (state->read_only && state->read_write) {
+		pb_log("boot option %s specified both 'ro' and 'rw', "
+				"using 'rw'\n", opt->name);
+		state->read_only = false;
+	}
 
-	/* opt is persistent, so must be associated with device */
+	if (state->read_only || state->read_write) {
+		opt->boot_args = talloc_asprintf(opt, "%s %s",
+					state->read_only ? "ro" : "rw",
+					opt->boot_args);
+	}
 
-	device_add_boot_option(conf->dc->device, state->opt);
-	state->opt = talloc_zero(conf->dc->device, struct boot_option);
-	state->opt->boot_args = talloc_strdup(state->opt, "");
+	if (state->literal) {
+		opt->boot_args = talloc_strdup(opt, state->literal);
+	}
+
+	opt->description = talloc_asprintf(opt, "%s %s %s",
+		state->boot_image,
+		(state->initrd ? state->initrd : ""),
+		opt->boot_args ? opt->boot_args : "");
+
+	conf_strip_str(opt->boot_args);
+	conf_strip_str(opt->description);
+
+	default_label = conf_get_global_option(conf, "default");
+	if (default_label &&
+			!strcasecmp(state->opt->option->name, default_label))
+		state->opt->option->is_default = true;
+
+	discover_context_add_boot_option(conf->dc, state->opt);
 }
 
 static void yaboot_process_pair(struct conf_context *conf, const char *name,
 		char *value)
 {
 	struct yaboot_state *state = conf->parser_info;
+	struct discover_boot_option *opt = state->opt;
+	struct fixed_pair {
+		const char *image;
+		const char *initrd;
+	};
+	static const struct fixed_pair suse_fp32 = {
+		.image = "/suseboot/vmlinux32",
+		.initrd = "/suseboot/initrd32",
+	};
+	static const struct fixed_pair suse_fp64 = {
+		.image = "/suseboot/vmlinux64",
+		.initrd = "/suseboot/initrd64",
+	};
+	const struct fixed_pair *suse_fp;
 
 	/* fixup for bare values */
 
@@ -60,173 +193,164 @@ static void yaboot_process_pair(struct conf_context *conf, const char *name,
 	if (!state->globals_done && conf_set_global_option(conf, name, value))
 		return;
 
-	if (!conf_param_in_list(state->known_names, name))
-		return;
-
-	state->globals_done = 1;
-
 	/* image */
-
 	if (streq(name, "image")) {
-		if (state->opt->boot_image_file)
+		/* an image section finishes our global defintions */
+		state->globals_done = 1;
+
+		/* First finish any previous image. */
+		if (opt)
 			yaboot_finish(conf);
 
-		state->opt->boot_image_file = resolve_path(state->opt, value,
-			conf->dc->device_path);
-		state->desc_image = talloc_strdup(state->opt, value);
+		/* Then start the new image. */
+		opt = state_start_new_option(conf, state);
+
+		state->boot_image = talloc_strdup(state, value);
+
 		return;
 	}
 
-	if (streq(name, "image[32bit]") || streq(name, "image[64bit]")) {
-		state->found_suse = 1;
+	/* Special processing for SUSE install CD. */
+
+	if (streq(name, "image[32bit]"))
+		suse_fp = &suse_fp32;
+	else if (streq(name, "image[64bit]"))
+		suse_fp = &suse_fp64;
+	else
+		suse_fp = NULL;
 
-		if (state->opt->boot_image_file)
+	if (suse_fp) {
+		/* First finish any previous image. */
+		if (opt)
 			yaboot_finish(conf);
 
+		/* Then start the new image. */
+		opt = state_start_new_option(conf, state);
+
 		if (*value == '/') {
-			state->opt->boot_image_file = resolve_path(state->opt,
-				value, conf->dc->device_path);
-			state->desc_image = talloc_strdup(state->opt, value);
+			state->boot_image = talloc_strdup(state, value);
 		} else {
-			char *s;
-			asprintf(&s, "/suseboot/%s", value);
-			state->opt->boot_image_file = resolve_path(state->opt,
-				s, conf->dc->device_path);
-			state->desc_image = talloc_strdup(state->opt, s);
-			free(s);
+			state->boot_image = talloc_strdup(state,
+							suse_fp->image);
+			state->initrd = talloc_strdup(state, suse_fp->initrd);
 		}
 
 		return;
 	}
 
-	if (!state->opt->boot_image_file) {
-		pb_log("%s: unknown name: %s\n", __func__, name);
+	/* all other processing requires an image */
+	if (!opt) {
+		pb_debug("%s: unknown name: %s\n", __func__, name);
 		return;
 	}
 
 	/* initrd */
-
 	if (streq(name, "initrd")) {
-		if (!state->found_suse || (*value == '/')) {
-			state->opt->initrd_file = resolve_path(state->opt,
-				value, conf->dc->device_path);
-			state->desc_initrd = talloc_asprintf(state, "initrd=%s",
-				value);
-		} else {
-			char *s;
-			asprintf(&s, "/suseboot/%s", value);
-			state->opt->initrd_file = resolve_path(state->opt,
-				s, conf->dc->device_path);
-			state->desc_initrd = talloc_asprintf(state, "initrd=%s",
-				s);
-			free(s);
-		}
+		state->initrd = talloc_strdup(state, value);
 		return;
 	}
 
 	/* label */
-
 	if (streq(name, "label")) {
-		state->opt->id = talloc_asprintf(state->opt, "%s#%s",
-			conf->dc->device->id, value);
-		state->opt->name = talloc_strdup(state->opt, value);
+		opt->option->id = talloc_asprintf(opt->option, "%s#%s",
+			conf->dc->device->device->id, value);
+		opt->option->name = talloc_strdup(opt->option, value);
 		return;
 	}
 
 	/* args */
+	if (streq(name, "device")) {
+		printf("option device : %s", value);
+		state->device = talloc_strdup(state, value);
+		return;
+	}
+
+	if (streq(name, "parititon")) {
+		state->partition = talloc_strdup(state, value);
+		return;
+	}
 
 	if (streq(name, "append")) {
-		state->opt->boot_args = talloc_asprintf_append(
-			state->opt->boot_args, "%s ", value);
+		opt->option->boot_args = talloc_asprintf_append(
+			opt->option->boot_args, "%s ", value);
 		return;
 	}
 
 	if (streq(name, "initrd-size")) {
-		state->opt->boot_args = talloc_asprintf_append(
-			state->opt->boot_args, "ramdisk_size=%s ", value);
+		state->initrd_size = talloc_strdup(state, value);
 		return;
 	}
 
 	if (streq(name, "literal")) {
-		if (*state->opt->boot_args) {
-			pb_log("%s: literal over writes '%s'\n", __func__,
-				state->opt->boot_args);
-			talloc_free(state->opt->boot_args);
-		}
-		talloc_asprintf(state->opt, "%s ", value);
+		state->literal = talloc_strdup(state, value);
 		return;
 	}
 
 	if (streq(name, "ramdisk")) {
-		state->opt->boot_args = talloc_asprintf_append(
-			state->opt->boot_args, "ramdisk=%s ", value);
+		state->ramdisk = talloc_strdup(state, value);
 		return;
 	}
 
 	if (streq(name, "read-only")) {
-		state->opt->boot_args = talloc_asprintf_append(
-			state->opt->boot_args, "ro ");
+		state->read_only = true;
 		return;
 	}
 
 	if (streq(name, "read-write")) {
-		state->opt->boot_args = talloc_asprintf_append(
-			state->opt->boot_args, "rw ");
+		state->read_write = true;
 		return;
 	}
 
 	if (streq(name, "root")) {
-		state->opt->boot_args = talloc_asprintf_append(
-			state->opt->boot_args, "root=%s ", value);
+		state->root = talloc_strdup(state, value);
 		return;
 	}
 
-	pb_log("%s: unknown name: %s\n", __func__, name);
+	pb_debug("%s: unknown name: %s\n", __func__, name);
 }
 
 static struct conf_global_option yaboot_global_options[] = {
-	{ .name = "boot" },
-	{ .name = "initrd" },
+	{ .name = "root" },
+	{ .name = "device" },
 	{ .name = "partition" },
+	{ .name = "initrd" },
+	{ .name = "initrd_size" },
 	{ .name = "video" },
+	{ .name = "literal" },
+	{ .name = "ramdisk" },
+	{ .name = "default" },
 	{ .name = NULL },
 };
 
 static const char *const yaboot_conf_files[] = {
 	"/yaboot.conf",
 	"/yaboot.cnf",
+	"/etc/lilo.conf",
+	"/etc/silo.conf",
 	"/etc/yaboot.conf",
 	"/etc/yaboot.cnf",
 	"/suseboot/yaboot.cnf",
 	"/YABOOT.CONF",
 	"/YABOOT.CNF",
+	"/ETC/LILO.CONF",
+	"/ETC/SILO.CONF",
 	"/ETC/YABOOT.CONF",
 	"/ETC/YABOOT.CNF",
 	"/SUSEBOOT/YABOOT.CNF",
 	NULL
 };
 
-static const char *yaboot_known_names[] = {
-	"append",
-	"image",
-	"image[64bit]", /* SUSE extension */
-	"image[32bit]", /* SUSE extension */
-	"initrd",
-	"initrd-size",
-	"label",
-	"literal",
-	"ramdisk",
-	"read-only",
-	"read-write",
-	"root",
-	NULL
-};
-
 static int yaboot_parse(struct discover_context *dc)
 {
-	struct conf_context *conf;
+	const char * const *filename;
 	struct yaboot_state *state;
-	int rc;
+	struct conf_context *conf;
+	int len, rc;
+	char *buf;
+
+	/* Support block device boot only at present */
+	if (dc->event)
+		return -1;
 
 	conf = talloc_zero(dc, struct conf_context);
 
@@ -235,22 +359,31 @@ static int yaboot_parse(struct discover_context *dc)
 
 	conf->dc = dc;
 	conf->global_options = yaboot_global_options,
-	conf->conf_files = yaboot_conf_files,
+	conf_init_global_options(conf);
+	conf->get_pair = conf_get_pair_equal;
 	conf->process_pair = yaboot_process_pair;
 	conf->finish = yaboot_finish;
 	conf->parser_info = state = talloc_zero(conf, struct yaboot_state);
 
-	state->known_names = yaboot_known_names;
-
-	/* opt is persistent, so must be associated with device */
+	state->opt = NULL;
 
-	state->opt = talloc_zero(conf->dc->device, struct boot_option);
-	state->opt->boot_args = talloc_strdup(state->opt, "");
+	for (filename = yaboot_conf_files; *filename; filename++) {
+		rc = parser_request_file(dc, dc->device, *filename, &buf, &len);
+		if (rc)
+			continue;
 
-	rc = conf_parse(conf);
+		conf_parse_buf(conf, buf, len);
+		talloc_free(buf);
+	}
 
 	talloc_free(conf);
-	return rc;
+	return 0;
 }
 
-define_parser(yaboot, 99, yaboot_parse);
+static struct parser yaboot_parser = {
+	.name			= "yaboot",
+	.parse			= yaboot_parse,
+	.resolve_resource	= resolve_devpath_resource,
+};
+
+register_parser(yaboot_parser);