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#include <linux/list.h>
#include <sys/times.h>
#include <stdbool.h>
#include <string.h>
#include <core.h>
#include "cli.h"
#include "console.h"
#include "com32.h"
#include "menu.h"
#include "config.h"
#include "syslinux/adv.h"
#include <sys/module.h>
static enum kernel_type parse_kernel_type(const char *kernel)
{
enum kernel_type type;
const char *p;
int len;
/* Find the end of the command */
p = kernel;
while (*p && !my_isspace(*p))
p++;
len = p - kernel;
if (!strncmp(kernel + len - 4, ".c32", 4)) {
type = KT_COM32;
} else if (!strncmp(kernel + len - 2, ".0", 2)) {
type = KT_PXE;
} else if (!strncmp(kernel + len - 3, ".bs", 3)) {
type = KT_BOOT;
} else if (!strncmp(kernel + len - 4, ".img", 4)) {
type = KT_FDIMAGE;
} else if (!strncmp(kernel + len - 4, ".bin", 4)) {
type = KT_BOOT;
} else if (!strncmp(kernel + len - 4, ".bss", 4)) {
type = KT_BSS;
} else if (!strncmp(kernel + len - 4, ".com", 4) ||
!strncmp(kernel + len - 4, ".cbt", 4)) {
type = KT_COMBOOT;
}
/* use KT_KERNEL as default */
else
type = KT_KERNEL;
return type;
}
/*
* Attempt to load a kernel after deciding what type of image it is.
*
* We only return from this function if something went wrong loading
* the the kernel. If we return the caller should call enter_cmdline()
* so that the user can help us out.
*/
static void load_kernel(const char *kernel)
{
struct menu_entry *me;
enum kernel_type type;
const char *cmdline;
/* Virtual kernel? */
me = find_label(kernel);
if (me) {
type = parse_kernel_type(me->cmdline);
/* cmdline contains type specifier */
if (me->cmdline[0] == '.')
type = KT_NONE;
execute(me->cmdline, type);
/* We shouldn't return */
goto bad_kernel;
}
if (!allowimplicit)
goto bad_implicit;
type = parse_kernel_type(kernel);
execute(kernel, type);
bad_implicit:
bad_kernel:
/*
* If we fail to boot the kernel execute the "onerror" command
* line.
*/
if (onerrorlen) {
rsprintf(&cmdline, "%s %s", onerror, default_cmd);
execute(cmdline, KT_COM32);
}
}
static void enter_cmdline(void)
{
const char *cmdline;
/* Enter endless command line prompt, should support "exit" */
while (1) {
cmdline = edit_cmdline("syslinux$", 1, NULL, cat_help_file);
if (!cmdline)
continue;
/* return if user only press enter */
if (cmdline[0] == '\0') {
printf("\n");
continue;
}
printf("\n");
load_kernel(cmdline);
}
}
int main(int argc, char **argv)
{
const void *adv;
size_t count = 0;
char *config_argv[2] = { NULL, NULL };
openconsole(&dev_rawcon_r, &dev_ansiserial_w);
if (ConfigName[0])
config_argv[0] = ConfigName;
parse_configs(config_argv);
adv = syslinux_getadv(ADV_BOOTONCE, &count);
if (adv && count) {
/*
* We apparently have a boot-once set; clear it and
* then execute the boot-once.
*/
const char *cmdline;
char *src, *dst;
size_t i;
src = (char *)adv;
cmdline = dst = malloc(count + 1);
if (!dst) {
printf("Failed to allocate memory for ADV\n");
goto cmdline;
}
for (i = 0; i < count; i++)
*dst++ = *src++;
*dst = '\0'; /* Null-terminate */
/* Clear the boot-once data from the ADV */
if (!syslinux_setadv(ADV_BOOTONCE, 0, NULL))
syslinux_adv_write();
load_kernel(cmdline); /* Shouldn't return */
goto cmdline;
}
/* TODO: Check KbdFlags? */
if (forceprompt)
goto cmdline;
/*
* Auto boot
*/
if (defaultlevel || noescape) {
if (defaultlevel) {
load_kernel(default_cmd); /* Shouldn't return */
} else {
printf("No DEFAULT or UI configuration directive found!\n");
if (noescape)
kaboom();
}
}
cmdline:
/* Should never return */
enter_cmdline();
return 0;
}
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