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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 "paths.h"
struct yaboot_state {
struct boot_option *opt;
const char *desc_image;
char *desc_initrd;
int globals_done;
const char *const *known_names;
};
static void yaboot_finish(struct conf_context *conf)
{
struct yaboot_state *state = conf->parser_info;
if (!state->desc_image) {
pb_log("%s: %s: no image found\n", __func__,
conf->dc->device->id);
return;
}
assert(state->opt);
assert(state->opt->name);
assert(state->opt->boot_args);
state->opt->description = talloc_asprintf(state->opt, "%s %s %s",
state->desc_image,
(state->desc_initrd ? state->desc_initrd : ""),
state->opt->boot_args);
talloc_free(state->desc_initrd);
state->desc_initrd = NULL;
conf_strip_str(state->opt->boot_args);
conf_strip_str(state->opt->description);
/* opt is persistent, so must be associated with device */
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, "");
}
static void yaboot_process_pair(struct conf_context *conf, const char *name,
char *value)
{
struct yaboot_state *state = conf->parser_info;
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 */
if (!name)
name = value;
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")) {
const char *g_boot = conf_get_global_option(conf, "boot");
const char *g_part = conf_get_global_option(conf, "partition");
/* First finish any previous image. */
if (state->opt->boot_image_file)
yaboot_finish(conf);
/* Then start the new image. */
if (g_boot && g_part) {
char* dev = talloc_asprintf(NULL, "%s%s", g_boot,
g_part);
state->opt->boot_image_file = resolve_path(state->opt,
value, dev);
state->desc_image = talloc_asprintf(state->opt,
"%s%s", dev, value);
talloc_free(dev);
} else if (g_boot) {
state->opt->boot_image_file = resolve_path(state->opt,
value, g_boot);
state->desc_image = talloc_asprintf(state->opt,
"%s%s", g_boot, value);
} else {
state->opt->boot_image_file = resolve_path(state->opt,
value, conf->dc->device_path);
state->desc_image = talloc_strdup(state->opt, value);
}
return;
}
/* 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 (suse_fp) {
/* First finish any previous image. */
if (state->opt->boot_image_file)
yaboot_finish(conf);
/* Then start the new image. */
if (*value == '/') {
state->opt->boot_image_file = resolve_path(state->opt,
value, conf->dc->device_path);
state->desc_image = talloc_strdup(state->opt, value);
} else {
state->opt->boot_image_file = resolve_path(state->opt,
suse_fp->image, conf->dc->device_path);
state->desc_image = talloc_strdup(state->opt,
suse_fp->image);
state->opt->initrd_file = resolve_path(state->opt,
suse_fp->initrd, conf->dc->device_path);
state->desc_initrd = talloc_asprintf(state, "initrd=%s",
suse_fp->initrd);
}
return;
}
if (!state->opt->boot_image_file) {
pb_log("%s: unknown name: %s\n", __func__, name);
return;
}
/* initrd */
if (streq(name, "initrd")) {
const char *g_boot = conf_get_global_option(conf, "boot");
const char *g_part = conf_get_global_option(conf, "partition");
if (g_boot && g_part) {
char* dev = talloc_asprintf(NULL, "%s%s", g_boot,
g_part);
state->opt->initrd_file = resolve_path(state->opt,
value, dev);
state->desc_initrd = talloc_asprintf(state,
"initrd=%s%s", dev, value);
talloc_free(dev);
} else if (g_boot) {
state->opt->initrd_file = resolve_path(state->opt,
value, g_boot);
state->desc_initrd = talloc_asprintf(state,
"initrd=%s%s", g_boot, value);
} else {
state->opt->initrd_file = resolve_path(state->opt,
value, conf->dc->device_path);
state->desc_initrd = talloc_asprintf(state, "initrd=%s",
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);
return;
}
/* args */
if (streq(name, "append")) {
state->opt->boot_args = talloc_asprintf_append(
state->opt->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);
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);
return;
}
if (streq(name, "ramdisk")) {
state->opt->boot_args = talloc_asprintf_append(
state->opt->boot_args, "ramdisk=%s ", value);
return;
}
if (streq(name, "read-only")) {
state->opt->boot_args = talloc_asprintf_append(
state->opt->boot_args, "ro ");
return;
}
if (streq(name, "read-write")) {
state->opt->boot_args = talloc_asprintf_append(
state->opt->boot_args, "rw ");
return;
}
if (streq(name, "root")) {
state->opt->boot_args = talloc_asprintf_append(
state->opt->boot_args, "root=%s ", value);
return;
}
pb_log("%s: unknown name: %s\n", __func__, name);
}
static struct conf_global_option yaboot_global_options[] = {
{ .name = "boot" },
{ .name = "initrd" },
{ .name = "partition" },
{ .name = "video" },
{ .name = NULL },
};
static const char *const yaboot_conf_files[] = {
"/yaboot.conf",
"/yaboot.cnf",
"/etc/yaboot.conf",
"/etc/yaboot.cnf",
"/suseboot/yaboot.cnf",
"/YABOOT.CONF",
"/YABOOT.CNF",
"/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;
struct yaboot_state *state;
int rc;
conf = talloc_zero(dc, struct conf_context);
if (!conf)
return 0;
conf->dc = dc;
conf->global_options = yaboot_global_options,
conf_init_global_options(conf);
conf->conf_files = yaboot_conf_files,
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 = talloc_zero(conf->dc->device, struct boot_option);
state->opt->boot_args = talloc_strdup(state->opt, "");
rc = conf_parse(conf);
talloc_free(conf);
return rc;
}
define_parser(yaboot, yaboot_parse);
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