X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fkboot-parser.c;h=bf9c5eb2fe98f5f59056cad85f47e018cb31a674;hp=df2e7620e13ad8ea40a735aaa04da60881f43de1;hb=7e0b9da2ae2f96d24c711c0ad4d12bb193ec49c0;hpb=32e6a41f33e5576716b351bd473a27939fe94fa1

diff --git a/discover/kboot-parser.c b/discover/kboot-parser.c
index df2e762..bf9c5eb 100644
--- a/discover/kboot-parser.c
+++ b/discover/kboot-parser.c
@@ -1,288 +1,208 @@
-#define _GNU_SOURCE
+#if defined(HAVE_CONFIG_H)
+#include "config.h"
+#endif
 
+#include <assert.h>
 #include <stdlib.h>
-#include <stdio.h>
 #include <string.h>
-#include <ctype.h>
-#include <unistd.h>
+#include <i18n/i18n.h>
 
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
+#include "log/log.h"
+#include "talloc/talloc.h"
+#include "types/types.h"
+#include "parser-conf.h"
+#include "parser-utils.h"
+#include "resource.h"
 
-#include "parser.h"
-#include "params.h"
-
-#define buf_size 1024
-
-static const char *devpath;
-
-static int param_is_ignored(const char *param)
-{
-	static const char *ignored_options[] =
-		{ "message", "timeout", "default", NULL };
-	const char **str;
-
-	for (str = ignored_options; *str; str++)
-		if (streq(*str, param))
-			return 1;
-	return 0;
-}
-
-/**
- * Splits a name=value pair, with value terminated by @term (or nul). if there
- * is no '=', then only the value is populated, and *name is set to NULL. The
- * string is modified in place.
- *
- * Returns the next byte to process, or null if we've hit the end of the
- * string.
- *
- * */
-static char *get_param_pair(char *str, char **name_out, char **value_out,
-		char terminator)
+static void kboot_process_pair(struct conf_context *conf, const char *name,
+		char *value)
 {
-	char *sep, *tmp, *name, *value;
-
-	/* terminate the value */
-	tmp = strchr(str, terminator);
-	if (tmp)
-		*tmp = 0;
-	else
-		tmp = NULL;
-
-	sep = strchr(str, '=');
-	if (!sep) {
-		*name_out = NULL;
-		*value_out = str;
-		return tmp ? tmp + 1 : NULL;
-	}
-
-	/* terminate the name */
-	*sep = 0;
+	const char *const *ignored_names = conf->parser_info;
+	struct discover_boot_option *d_opt;
+	struct boot_option *opt;
+	char *pos;
+	char *args;
+	const char *initrd;
+	const char *root;
+	const char *dtb;
 
-	/* remove leading spaces */
-	for (name = str; isspace(*name); name++);
-	for (value = sep + 1; isspace(*value); value++);
+	/* ignore bare values */
 
-	/* .. and trailing ones.. */
-	for (sep--; isspace(*sep); sep--)
-		*sep = 0;
-	for (sep = value + strlen(value) - 1; isspace(*sep); sep--)
-		*sep = 0;
+	if (!name)
+		return;
 
-	*name_out = name;
-	*value_out = value;
+	if (conf_param_in_list(ignored_names, name))
+		return;
 
-	return tmp ? tmp + 1 : NULL;
-}
+	if (conf_set_global_option(conf, name, value))
+		return;
 
-struct global_option {
-	char *name;
-	char *value;
-};
+	/* opt must be associated with dc */
 
+	d_opt = talloc_zero(conf->dc, struct discover_boot_option);
+	d_opt->device = conf->dc->device;
+	opt = talloc_zero(d_opt, struct boot_option);
 
-static struct global_option global_options[] = {
-	{ .name = "root" },
-	{ .name = "initrd" },
-	{ .name = "video" },
-	{ .name = NULL }
-};
+	if (!opt)
+		return;
 
-/*
- * Check if an option (name=value) is a global option. If so, store it in
- * the global options table, and return 1. Otherwise, return 0.
- */
-static int check_for_global_option(const char *name, const char *value)
-{
-	int i;
+	opt->id = talloc_asprintf(opt, "%s#%s", conf->dc->device->device->id,
+			name);
+	opt->name = talloc_strdup(opt, name);
+	d_opt->option = opt;
 
-	for (i = 0; global_options[i].name ;i++) {
-		if (!strcmp(name, global_options[i].name)) {
-			global_options[i].value = strdup(value);
-			return 1;
-		}
-	}
-	return 0;
-}
+	args = talloc_strdup(opt, "");
+	initrd = conf_get_global_option(conf, "initrd");
+	root = conf_get_global_option(conf, "root");
+	dtb = conf_get_global_option(conf, "dtb");
 
-static char *get_global_option(const char *name)
-{
-	int i;
+	pos = strchr(value, ' ');
 
-	for (i = 0; global_options[i].name ;i++)
-		if (!strcmp(name, global_options[i].name))
-			return global_options[i].value;
+	/* if there's no space, it's only a kernel image with no params */
 
-	return NULL;
-}
+	if (!pos)
+		goto out_add;
+	*pos = 0;
 
-static int parse_option(struct boot_option *opt, char *config)
-{
-	char *pos, *name, *value, *root, *initrd, *cmdline, *tmp;
+	for (pos++; pos;) {
+		char *cl_name, *cl_value;
 
-	root = initrd = cmdline = NULL;
+		pos = conf_get_pair_equal(conf, pos, &cl_name, &cl_value, ' ');
 
-	/* remove quotes around the value */
-	while (*config == '"' || *config == '\'')
-		config++;
+		if (!cl_name) {
+			args = talloc_asprintf_append(args, "%s ", cl_value);
+			continue;
+		}
 
-	pos = config + strlen(config) - 1;
-	while (*pos == '"' || *pos == '\'')
-		*(pos--) = 0;
+		if (streq(cl_name, "initrd")) {
+			initrd = cl_value;
+			continue;
+		}
 
-	if (!strlen(pos))
-		return 0;
+		if (streq(cl_name, "root")) {
+			root = cl_value;
+			continue;
+		}
 
-	pos = strchr(config, ' ');
+		if (streq(cl_name, "dtb")) {
+			dtb = cl_value;
+			continue;
+		}
 
-	/* if there's no space, it's only a kernel image with no params */
-	if (!pos) {
-		opt->boot_image_file = resolve_path(config, devpath);
-		opt->description = strdup(config);
-		return 1;
+		args = talloc_asprintf_append(args, "%s=%s ", cl_name,
+			cl_value);
 	}
 
-	*pos = 0;
-	opt->boot_image_file = resolve_path(config, devpath);
+out_add:
+	d_opt->boot_image = create_devpath_resource(d_opt,
+				conf->dc->device, value);
 
-	cmdline = malloc(buf_size);
-	*cmdline = 0;
-
-	for (pos++; pos;) {
-		pos = get_param_pair(pos, &name, &value, ' ');
+	char* args_sigfile_default = talloc_asprintf(d_opt,
+		"%s.cmdline.sig", value);
+	d_opt->args_sig_file = create_devpath_resource(d_opt,
+				conf->dc->device, args_sigfile_default);
+	talloc_free(args_sigfile_default);
 
-		if (!name) {
-			strcat(cmdline, " ");
-			strcat(cmdline, value);
-
-		} else if (streq(name, "initrd")) {
-			initrd = value;
-
-		} else if (streq(name, "root")) {
-			root = value;
-
-		} else {
-			strcat(cmdline, " ");
-			*(value - 1) = '=';
-			strcat(cmdline, name);
-		}
-	}
+	if (root) {
+		opt->boot_args = talloc_asprintf(opt, "root=%s %s", root, args);
+		talloc_free(args);
+	} else
+		opt->boot_args = args;
 
-	if (!root)
-		root = get_global_option("root");
-	if (!initrd)
-		initrd = get_global_option("initrd");
+	opt->description = talloc_asprintf(opt, "%s %s", value,
+			opt->boot_args);
 
 	if (initrd) {
-		asprintf(&tmp, "initrd=%s %s", initrd, cmdline);
-		free(cmdline);
-		cmdline = tmp;
-
-		opt->initrd_file = resolve_path(initrd, devpath);
+		d_opt->initrd = create_devpath_resource(d_opt,
+				conf->dc->device, initrd);
+		opt->description = talloc_asprintf_append(opt->description,
+				" initrd=%s", initrd);
 	}
 
-	if (root) {
-		asprintf(&tmp, "root=%s %s", root, cmdline);
-		free(cmdline);
-		cmdline = tmp;
-
-	} else if (initrd) {
-		/* if there's an initrd but no root, fake up /dev/ram0 */
-		asprintf(&tmp, "root=/dev/ram0 %s", cmdline);
-		free(cmdline);
-		cmdline = tmp;
+	if (dtb) {
+		d_opt->dtb = create_devpath_resource(d_opt,
+				conf->dc->device, dtb);
+		opt->description = talloc_asprintf_append(opt->description,
+				" dtb=%s", dtb);
 	}
 
-	pb_log("kboot cmdline: %s\n", cmdline);
-	opt->boot_args = cmdline;
+	conf_strip_str(opt->boot_args);
+	conf_strip_str(opt->description);
 
-	asprintf(&opt->description, "%s %s",
-			config, opt->boot_args);
-
-	return 1;
+	discover_context_add_boot_option(conf->dc, d_opt);
 }
 
-static void parse_buf(struct device *dev, char *buf)
-{
-	char *pos, *name, *value;
-	int sent_device = 0;
-
-	for (pos = buf; pos;) {
-		struct boot_option opt;
-
-		pos = get_param_pair(pos, &name, &value, '\n');
-
-		pb_log("kboot param: '%s' = '%s'\n", name, value);
+static struct conf_global_option kboot_global_options[] = {
+	{ .name = "dtb" },
+	{ .name = "initrd" },
+	{ .name = "root" },
+	{ .name = "video" },
+	{ .name = NULL }
+};
 
-		if (name == NULL || param_is_ignored(name))
-			continue;
+static const char *const kboot_conf_files[] = {
+	"/kboot.conf",
+	"/kboot.cnf",
+	"/etc/kboot.conf",
+	"/etc/kboot.cnf",
+	"/KBOOT.CONF",
+	"/KBOOT.CNF",
+	"/ETC/KBOOT.CONF",
+	"/ETC/KBOOT.CNF",
+	NULL
+};
 
-		if (*name == '#')
-			continue;
+static const char *const kboot_ignored_names[] = {
+	"default",
+	"delay",
+	"message",
+	"timeout",
+	NULL
+};
 
-		if (check_for_global_option(name, value))
+static int kboot_parse(struct discover_context *dc)
+{
+	struct conf_context *conf;
+	const char * const *filename;
+	char *buf;
+	int len, rc;
+
+	/* Support block device boot only at present */
+	if (dc->event)
+		return -1;
+
+	conf = talloc_zero(dc, struct conf_context);
+
+	if (!conf)
+		return -1;
+
+	conf->dc = dc;
+	conf->global_options = kboot_global_options,
+	conf_init_global_options(conf);
+	conf->get_pair = conf_get_pair_equal;
+	conf->process_pair = kboot_process_pair;
+	conf->parser_info = (void *)kboot_ignored_names;
+
+	for (filename = kboot_conf_files; *filename; filename++) {
+		rc = parser_request_file(dc, dc->device, *filename, &buf, &len);
+		if (rc)
 			continue;
 
-		memset(&opt, 0, sizeof(opt));
-		opt.name = strdup(name);
-
-		if (parse_option(&opt, value))
-			if (!sent_device++)
-				add_device(dev);
-			add_boot_option(&opt);
-
-		free(opt.name);
+		conf_parse_buf(conf, buf, len);
+		device_handler_status_dev_info(dc->handler, dc->device,
+				_("Parsed kboot configuration from %s"),
+				*filename);
+		talloc_free(buf);
 	}
-}
-
-static int parse(const char *device)
-{
-	char *filepath, *buf;
-	int fd, len, rc = 0;
-	struct stat stat;
-	struct device *dev;
-
-	devpath = device;
-
-	filepath = resolve_path("/etc/kboot.conf", devpath);
 
-	fd = open(filepath, O_RDONLY);
-	if (fd < 0)
-		goto out_free_path;
-
-	if (fstat(fd, &stat))
-		goto out_close;
-
-	buf = malloc(stat.st_size + 1);
-	if (!buf)
-		goto out_close;;
-
-	len = read(fd, buf, stat.st_size);
-	if (len < 0)
-		goto out_free_buf;
-	buf[len] = 0;
-
-	dev = malloc(sizeof(*dev));
-	memset(dev, 0, sizeof(*dev));
-	dev->id = strdup(device);
-	dev->icon_file = strdup(generic_icon_file(guess_device_type()));
-
-	parse_buf(dev, buf);
-
-	rc = 1;
-
-out_free_buf:
-	free(buf);
-out_close:
-	close(fd);
-out_free_path:
-	free(filepath);
-	return rc;
+	talloc_free(conf);
+	return 0;
 }
 
-struct parser kboot_parser = {
-	.name = "kboot.conf parser",
-	.priority = 98,
-	.parse	  = parse
+static struct parser kboot_parser = {
+	.name			= "kboot",
+	.parse			= kboot_parse,
+	.resolve_resource	= resolve_devpath_resource,
 };
+
+register_parser(kboot_parser);