1#include <stdbool.h>
2#include <stdlib.h>
3#include <stdio.h>
4#include <string.h>
5#include <console.h>
6#include <dprintf.h>
7#include <syslinux/loadfile.h>
8#include <syslinux/linux.h>
9#include <syslinux/pxe.h>
10#include "core.h"
11
12const char *globaldefault = NULL;
13const char *append = NULL;
14
15/* Will be called from readconfig.c */
16int new_linux_kernel(char *okernel, char *ocmdline)
17{
18	const char *kernel_name = NULL, *args = NULL;
19	struct initramfs *initramfs = NULL;
20	char *temp;
21	void *kernel_data;
22	size_t kernel_len, cmdline_len;
23	bool opt_quiet = false;
24	char *initrd_name, *cmdline;
25
26	dprintf("okernel = %s, ocmdline = %s", okernel, ocmdline);
27
28	if (okernel)
29		kernel_name = okernel;
30	else if (globaldefault)
31		kernel_name = globaldefault;
32
33	if (ocmdline)
34		args = ocmdline;
35	else if (append)
36		args = append;
37
38	cmdline_len = strlen("BOOT_IMAGE=") + strlen(kernel_name);
39	cmdline_len += 1;	/* space between BOOT_IMAGE and args */
40	cmdline_len += strlen(args);
41	cmdline_len += 1;	/* NUL-termination */
42
43	cmdline = malloc(cmdline_len);
44	if (!cmdline) {
45	    printf("Failed to alloc memory for cmdline\n");
46	    return 1;
47	}
48
49	sprintf(cmdline, "BOOT_IMAGE=%s %s", kernel_name, args);
50
51	/* "keeppxe" handling */
52#if IS_PXELINUX
53	extern char KeepPXE;
54
55	if (strstr(cmdline, "keeppxe"))
56		KeepPXE |= 1;
57#endif
58
59	if (strstr(cmdline, "quiet"))
60		opt_quiet = true;
61
62	if (!opt_quiet)
63		printf("Loading %s... ", kernel_name);
64
65	if (loadfile(kernel_name, &kernel_data, &kernel_len)) {
66		if (opt_quiet)
67			printf("Loading %s ", kernel_name);
68		printf("failed: ");
69		goto bail;
70	}
71
72	if (!opt_quiet)
73		printf("ok\n");
74
75	/* Find and load initramfs */
76	temp = strstr(cmdline, "initrd=");
77	if (temp) {
78		/* Initialize the initramfs chain */
79		initramfs = initramfs_init();
80		if (!initramfs)
81			goto bail;
82
83		temp += 6; /* strlen("initrd") */
84		do {
85		    size_t n = 0;
86		    char *p;
87
88		    temp++;	/* Skip = or , */
89
90		    p = temp;
91		    while (*p != ' ' && *p != ',' && *p) {
92			p++;
93			n++;
94		    }
95
96		    initrd_name = malloc(n + 1);
97		    if (!initrd_name) {
98			printf("Failed to allocate space for initrd\n");
99			goto bail;
100		    }
101
102		    snprintf(initrd_name, n + 1, "%s", temp);
103		    temp += n;
104
105		    if (!opt_quiet)
106			printf("Loading %s...", initrd_name);
107
108		    if (initramfs_load_archive(initramfs, initrd_name)) {
109			if (opt_quiet)
110			    printf("Loading %s ", initrd_name);
111			free(initrd_name);
112			printf("failed: ");
113			goto bail;
114		    }
115
116		    free(initrd_name);
117
118		    if (!opt_quiet)
119			printf("ok\n");
120		} while (*temp == ',');
121	}
122
123	/* This should not return... */
124	syslinux_boot_linux(kernel_data, kernel_len, initramfs, NULL, cmdline);
125	printf("Booting kernel failed: ");
126
127bail:
128	free(cmdline);
129	printf("%s\n", strerror(errno));
130	return 1;
131}
132