SliTaz Repositories

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/syslinux/stuff/iso2exe/boot.c	Thu Dec 13 14:33:27 2012 +0100
     1.3 @@ -0,0 +1,162 @@
     1.4 +#include <asm/limits.h>
     1.5 +#include <sys/types.h>
     1.6 +#include <unistd.h>
     1.7 +#include <fcntl.h>
     1.8 +#include <stdio.h>
     1.9 +#include "iso9660.h"
    1.10 +#include "bootlinux.h"
    1.11 +#include "libdos.h"
    1.12 +
    1.13 +static void usage(char *iso)
    1.14 +{
    1.15 +	printf("Usage: %s [[@commands]|[kernel=<bzimage>] \
    1.16 +[initrd=<rootfs>[,<rootfs2>...]] [iso=<isofile>] ...]\n\n\
    1.17 +Defaults: %s @tazboot.cmd  or  %s kernel=bzImage auto\n\n\
    1.18 +Examples for tazboot.cmd:\n\n\
    1.19 +  iso=\\isos\\slitaz-4.0.iso\n\
    1.20 +  kernel=boot/bzImage\n\
    1.21 +  initrd=boot/rootfs4.gz,boot/rootfs3.gz,boot/rootfs2.gz,boot/rootfs1.gz\n\
    1.22 +  rw root=/dev/null vga=normal autologin\n\n\
    1.23 +  kernel=\\slitaz\\vmlinuz\n\
    1.24 +  root=/dev/sda5 ro\n",iso,iso,iso);
    1.25 +	exit(1);
    1.26 +}
    1.27 +
    1.28 +static void bootiso(char **iso)
    1.29 +{
    1.30 +	char *init = "rdinit=/init.exe", *mode="menu";
    1.31 +	char c, *s, rootfs[16], cmdline[256];
    1.32 +	int fd, restart;
    1.33 +	unsigned long magic;
    1.34 +	
    1.35 +	if (isoreset(*iso) || isoopen("boot")) return;
    1.36 +	if (iso[1] && !strcmp(mode = iso[1], "text"))
    1.37 +		init = "";
    1.38 +	for (c = 0, restart = 1; isoreaddir(restart) == 0; restart = 0) {
    1.39 +		if (strncmp(isofilename, "rootfs", 6) || c > s[6]) continue;
    1.40 +		strcpy(rootfs, isofilename);
    1.41 +		c = s[6];
    1.42 +	}
    1.43 +	if (isoopen(mode))
    1.44 +		isoopen("bzImage");
    1.45 +	loadkernel();
    1.46 +	isoopen(rootfs);
    1.47 +	loadinitrd();
    1.48 +	lseek(isofd, 28, SEEK_SET);
    1.49 +	read(isofd, &magic, 4);
    1.50 +	isofilesize = magic & 0xFFFF;
    1.51 +	isofileofs = 0x8000 - isofilesize;
    1.52 +	loadinitrd();
    1.53 +	close(isofd);
    1.54 +	sprintf(cmdline,"rw root=/dev/null %s iso=%s magic=%lu mode=%s",
    1.55 +		init, *iso, magic, mode);
    1.56 +	bootlinux(cmdline);
    1.57 +}
    1.58 +
    1.59 +static int stricmp(char *ref, char *s)
    1.60 +{
    1.61 +	char c;
    1.62 +	while (*ref) {
    1.63 +		c = *s++;
    1.64 +		if (c >= 'A' && c <= 'Z') c += 'a' - 'A';
    1.65 +		c -= *ref++;
    1.66 +		if (c) return c;
    1.67 +	}
    1.68 +	return 0;
    1.69 +}
    1.70 +
    1.71 +static char *iso;
    1.72 +static int fakeopen(char *file)
    1.73 +{
    1.74 +	if (iso) {
    1.75 +		isoreset(iso);
    1.76 +		return isoopen(file);
    1.77 +	}
    1.78 +	close(isofd);
    1.79 +	isofd = open(file, O_RDONLY);
    1.80 +	if (isofd != -1) {
    1.81 +		isofileofs = 0;
    1.82 +		isofilesize = LONG_MAX;
    1.83 +	}
    1.84 +	return isofd;
    1.85 +}
    1.86 +
    1.87 +static char args[2048];
    1.88 +int main(int argc, char *argv[])
    1.89 +{
    1.90 +	char *kernel, *initrd, *cmdline, *cmdfile, *s;
    1.91 +	
    1.92 +	argv[0] = progname();
    1.93 +	bootiso(argv);		// iso ? parsing is /init.exe stuff !
    1.94 +
    1.95 +	chdirname(*argv);
    1.96 +	cmdfile = "tazboot.cmd";
    1.97 +	kernel  = "bzImage";
    1.98 +	initrd  = NULL;
    1.99 +	cmdline = "auto";
   1.100 +	if (argc > 1) {
   1.101 +		if (argv[1][0] == '@')
   1.102 +			cmdfile = argv[1] + 1;
   1.103 +		else {
   1.104 +			cmdfile = NULL;
   1.105 +#asm
   1.106 +		push	ds
   1.107 +		push	ds
   1.108 +		pop	es
   1.109 +		push	cs
   1.110 +		pop	ds
   1.111 +		mov	si, #0x82
   1.112 +		mov	di, #_args
   1.113 +		mov	cx, #0x7E/2
   1.114 +		rep
   1.115 +		  movsw
   1.116 +		pop	ds
   1.117 +#endasm
   1.118 +		}
   1.119 +	}
   1.120 +	if (cmdfile) {
   1.121 +		int fd;
   1.122 +		fd = open(cmdfile, O_RDONLY);;
   1.123 +		if (fd != -1) {
   1.124 +			read(fd, args, sizeof(args));
   1.125 +			close(fd);
   1.126 +			for (s = args; s < args + sizeof(args) -1; s++) {
   1.127 +				if (*s == '\r') *s++ = ' ';
   1.128 +				if (*s == '\n') *s   = ' ';
   1.129 +			}
   1.130 +		}
   1.131 +	}
   1.132 +	for (s = args; s < args + sizeof(args); s++) {
   1.133 +		if (*s == ' ') continue;
   1.134 +		if (stricmp("kernel=", s) == 0)
   1.135 +			kernel = s + 7;
   1.136 +		else if (stricmp("initrd=", s) == 0)
   1.137 +			initrd = s + 7;
   1.138 +		else if (stricmp("iso=", s) == 0)
   1.139 +			iso = s + 4;
   1.140 +		else {
   1.141 +			cmdline = s;
   1.142 +			break;
   1.143 +		}
   1.144 +		while (*s && *s != ' ') s++;
   1.145 +		*s = 0;
   1.146 +	}
   1.147 +	if (fakeopen(kernel) == -1)
   1.148 +		usage(argv[0]);
   1.149 +	loadkernel();
   1.150 +	if (initrd) {
   1.151 +		char *p, *q = initrd;
   1.152 +		while (1) {
   1.153 +			char c;
   1.154 +			for (p = q; *p && *p != ','; p++);
   1.155 +			c = *p;
   1.156 +			*p = 0;
   1.157 +			if (fakeopen(q) != -1)
   1.158 +				loadinitrd();
   1.159 +			if (c == 0)
   1.160 +				break;
   1.161 +			q = ++p;
   1.162 +		}
   1.163 +	}
   1.164 +	bootlinux(cmdline);
   1.165 +}