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#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <console.h>
#include <dprintf.h>
#include <syslinux/loadfile.h>
#include <syslinux/linux.h>
#include <syslinux/pxe.h>
#include "core.h"
const char *globaldefault = NULL;
const char *append = NULL;
/* Will be called from readconfig.c */
int new_linux_kernel(char *okernel, char *ocmdline)
{
const char *kernel_name = NULL, *args = NULL;
struct initramfs *initramfs = NULL;
char *temp;
void *kernel_data;
size_t kernel_len, cmdline_len;
bool opt_quiet = false;
char *initrd_name, *cmdline;
dprintf("okernel = %s, ocmdline = %s", okernel, ocmdline);
if (okernel)
kernel_name = okernel;
else if (globaldefault)
kernel_name = globaldefault;
if (ocmdline)
args = ocmdline;
else if (append)
args = append;
cmdline_len = strlen("BOOT_IMAGE=") + strlen(kernel_name);
cmdline_len += 1; /* space between BOOT_IMAGE and args */
cmdline_len += strlen(args);
cmdline_len += 1; /* NUL-termination */
cmdline = malloc(cmdline_len);
if (!cmdline) {
printf("Failed to alloc memory for cmdline\n");
return 1;
}
sprintf(cmdline, "BOOT_IMAGE=%s %s", kernel_name, args);
if (strstr(cmdline, "quiet"))
opt_quiet = true;
if (!opt_quiet)
printf("Loading %s... ", kernel_name);
if (loadfile(kernel_name, &kernel_data, &kernel_len)) {
if (opt_quiet)
printf("Loading %s ", kernel_name);
printf("failed: ");
goto bail;
}
if (!opt_quiet)
printf("ok\n");
/* Find and load initramfs */
temp = strstr(cmdline, "initrd=");
if (temp) {
/* Initialize the initramfs chain */
initramfs = initramfs_init();
if (!initramfs)
goto bail;
temp += 6; /* strlen("initrd") */
do {
size_t n = 0;
char *p;
temp++; /* Skip = or , */
p = temp;
while (*p != ' ' && *p != ',' && *p) {
p++;
n++;
}
initrd_name = malloc(n + 1);
if (!initrd_name) {
printf("Failed to allocate space for initrd\n");
goto bail;
}
snprintf(initrd_name, n + 1, "%s", temp);
temp += n;
if (!opt_quiet)
printf("Loading %s...", initrd_name);
if (initramfs_load_archive(initramfs, initrd_name)) {
if (opt_quiet)
printf("Loading %s ", initrd_name);
free(initrd_name);
printf("failed: ");
goto bail;
}
free(initrd_name);
if (!opt_quiet)
printf("ok\n");
} while (*temp == ',');
}
/* This should not return... */
syslinux_boot_linux(kernel_data, kernel_len, initramfs, NULL, cmdline);
printf("Booting kernel failed: ");
bail:
free(cmdline);
printf("%s\n", strerror(errno));
return 1;
}
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