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
12 const char *globaldefault = NULL;
13 const char *append = NULL;
14
15 /* Will be called from readconfig.c */
new_linux_kernel(char * okernel,char * ocmdline)16 int 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
127 bail:
128 free(cmdline);
129 printf("%s\n", strerror(errno));
130 return 1;
131 }
132