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