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#include <stdio.h>
#include <string.h>
#include <log/log.h>
#include <types/types.h>
#include <talloc/talloc.h>
#include <array-size/array-size.h>
#include "grub2.h"
static int builtin_set(struct grub2_script *script,
void *data __attribute__((unused)),
int argc, char *argv[])
{
char *name, *value, *p;
int i;
if (argc < 2)
return -1;
p = strchr(argv[1], '=');
if (!p)
return -1;
name = talloc_strndup(script, argv[1], p - argv[1]);
value = talloc_strdup(script, p+1);
for (i = 2; i < argc; i++)
value = talloc_asprintf_append(value, " %s", argv[i]);
script_env_set(script, name, value);
return 0;
}
static int builtin_linux(struct grub2_script *script,
void *data __attribute__((unused)),
int argc, char *argv[])
{
struct discover_boot_option *opt = script->opt;
const char *root;
int i;
if (!opt) {
pb_log("grub2 syntax error: 'linux' statement outside "
"a menuentry.\n");
return -1;
}
if (argc < 2) {
pb_log("grub2 syntax error: no filename provided to "
"linux statement\n");
return -1;
}
root = script_env_get(script, "root");
opt->boot_image = create_grub2_resource(opt, script->ctx->device,
root, argv[1]);
opt->option->boot_args = NULL;
if (argc > 2)
opt->option->boot_args = talloc_strdup(opt, argv[2]);
for (i = 3; i < argc; i++)
opt->option->boot_args = talloc_asprintf_append(
opt->option->boot_args,
" %s", argv[i]);
return 0;
}
static int builtin_initrd(struct grub2_script *script,
void *data __attribute__((unused)),
int argc, char *argv[])
{
struct discover_boot_option *opt = script->opt;
const char *root;
if (!opt) {
pb_log("grub2 syntax error: 'initrd' statement outside "
"a menuentry.\n");
return -1;
}
if (argc < 2) {
pb_log("grub2 syntax error: no filename provided to "
"initrd statement\n");
return -1;
}
root = script_env_get(script, "root");
opt->initrd = create_grub2_resource(opt, script->ctx->device,
root, argv[1]);
return 0;
}
static int builtin_search(struct grub2_script *script,
void *data __attribute__((unused)),
int argc, char *argv[])
{
const char *env_var, *spec;
int i;
env_var = NULL;
for (i = 1; i < argc - 1; i++) {
if (!strncmp(argv[i], "--set=", strlen("--set="))) {
env_var = argv[i] + strlen("--set=");
break;
}
}
if (!env_var)
return 0;
spec = argv[argc - 1];
script_env_set(script, env_var, spec);
return 0;
}
static struct {
const char *name;
grub2_function fn;
} builtins[] = {
{
.name = "set",
.fn = builtin_set,
},
{
.name = "linux",
.fn = builtin_linux,
},
{
.name = "initrd",
.fn = builtin_initrd,
},
{
.name = "search",
.fn = builtin_search,
}
};
void register_builtins(struct grub2_script *script)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(builtins); i++)
script_register_function(script, builtins[i].name,
builtins[i].fn, NULL);
}
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