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#define _GNU_SOURCE
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "log/log.h"
#include "talloc/talloc.h"
#include "types/types.h"
#include "parser-conf.h"
#include "parser-utils.h"
#include "resource.h"
static void kboot_process_pair(struct conf_context *conf, const char *name,
char *value)
{
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;
/* ignore bare values */
if (!name)
return;
if (conf_param_in_list(ignored_names, name))
return;
if (conf_set_global_option(conf, name, value))
return;
/* 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);
if (!opt)
return;
opt->id = talloc_asprintf(opt, "%s#%s", conf->dc->device->device->id,
name);
opt->name = talloc_strdup(opt, name);
d_opt->option = opt;
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");
pos = strchr(value, ' ');
/* if there's no space, it's only a kernel image with no params */
if (!pos)
goto out_add;
*pos = 0;
for (pos++; pos;) {
char *cl_name, *cl_value;
pos = conf_get_pair_equal(conf, pos, &cl_name, &cl_value, ' ');
if (!cl_name) {
args = talloc_asprintf_append(args, "%s ", cl_value);
continue;
}
if (streq(cl_name, "initrd")) {
initrd = cl_value;
continue;
}
if (streq(cl_name, "root")) {
root = cl_value;
continue;
}
if (streq(cl_name, "dtb")) {
dtb = cl_value;
continue;
}
args = talloc_asprintf_append(args, "%s=%s ", cl_name,
cl_value);
}
out_add:
d_opt->boot_image = create_devpath_resource(d_opt,
conf->dc->device, value);
if (root) {
opt->boot_args = talloc_asprintf(opt, "root=%s %s", root, args);
talloc_free(args);
} else
opt->boot_args = args;
opt->description = talloc_asprintf(opt, "%s %s", value,
opt->boot_args);
if (initrd) {
d_opt->initrd = create_devpath_resource(d_opt,
conf->dc->device, initrd);
opt->description = talloc_asprintf_append(opt->description,
" initrd=%s", initrd);
}
if (dtb) {
d_opt->dtb = create_devpath_resource(d_opt,
conf->dc->device, dtb);
opt->description = talloc_asprintf_append(opt->description,
" dtb=%s", dtb);
}
conf_strip_str(opt->boot_args);
conf_strip_str(opt->description);
discover_context_add_boot_option(conf->dc, d_opt);
}
static struct conf_global_option kboot_global_options[] = {
{ .name = "dtb" },
{ .name = "initrd" },
{ .name = "root" },
{ .name = "video" },
{ .name = NULL }
};
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
};
static const char *const kboot_ignored_names[] = {
"default",
"delay",
"message",
"timeout",
NULL
};
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;
conf_parse_buf(conf, buf, len);
talloc_free(buf);
}
talloc_free(conf);
return 0;
}
static struct parser kboot_parser = {
.name = "kboot",
.parse = kboot_parse,
.resolve_resource = resolve_devpath_resource,
};
register_parser(kboot_parser);
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