lilo.c

LINUX lilo-22.7 源代码。

		break;
	    case 'i':
		cfg_set(cf_options,"install",param,NULL);
		break;
	    case 'I':
		identify = param;
		if (argc && *argv[1] != '-') {
		    ident_opt = *++argv;
		    argc--;
		} else {
		    ident_opt = "i";
		}
		break;
	    case 'l':
		geometric |= AD_LINEAR;
		break;
	    case 'L':
		geometric |= AD_LBA32;
		break;
#endif /* !__MSDOS__ */
	    case 'm':
		cfg_set(cf_options,"map",param,NULL);
		break;
#if !__MSDOS__
	    case 'M':
		instmbr = 1;
		act1 = param;
#if !defined LCF_BUILTIN	|| 1
		if (argc && argv[1][0] != '-') {
		    act2 = *++argv;
		    argc--;
		}
#endif
		break;
	    case 'p':
		passw = 1;	/* force re-gen of password file */
		break;
	    case 'P':
		if ((act1=strchr(param,'='))) {
		    *act1++ = 0;	/* null terminate */
		    cfg_set(cf_options,param,act1,NULL);
		}
		else if (!strcasecmp(param,"fix"))
		    cfg_set(cf_options,"fix-table",NULL,NULL);
		else if (!strcasecmp(param,"ignore"))
		    cfg_set(cf_options,"ignore-table",NULL,NULL);
		else if (!strcasecmp(param,"x"))
		    extended_pt = 1;
		else
		    cfg_set(cf_options,param,NULL,NULL);
		break;
#endif /* !__MSDOS__ */
	    case 'q':
		query = 1;
		break;
#if !__MSDOS__
	    case 'r':
		new_root = param;
		break;
#endif /* !__MSDOS__ */
	    case 'R':
	        if (*(param = (*argv)+2)) argc++;
	        else if (argc) param = *++argv;
	        else reboot_arg = "";
	        
		while (argc) {
			if (!reboot_arg)
			    *(reboot_arg = alloc(strlen(param)+1)) = 0;
			else {
			    param = *++argv;
			    strcat(reboot_arg = ralloc(reboot_arg,
			        strlen(reboot_arg)+strlen(param)+2)," ");
			}
			strcat(reboot_arg, param);
			argc--;
		    }
#if 0
fprintf(errstd,"REBOOT=\"%s\"\n", reboot_arg);		    
#endif
		break;
#if !__MSDOS__
	    case 's':
		cfg_set(cf_options,"backup",param,NULL);
		break;
	    case 'S':
		cfg_set(cf_options,"force-backup",param,NULL);
		break;
	    case 't':
		test = 1;
		break;
	    case 'T':
	        tell_param = param;
	    	break;
	    case 'u':
		validate = 1;
		/* fall through */
	    case 'U':	/* argument to -u or -U is optional */
		uninstall = 1;
		if ((*argv)[2]) param = (*argv)+2;
		else if (argc && argv[1][0] != '-') {
		    param = *++argv;
		    argc--;
		}
		uninst_dev = param;
		break;
#endif /* !__MSDOS__ */
	    case 'v':
	        if ((*argv)[2]) param = (*argv)+2;
	        else if (argc && argv[1][0]>='0' && argv[1][0]<='9') {
	            param = *++argv;
	            argc--;
	        }
	        if (param) 
		    verbose = to_number(param);
		else
	            if (verbose<0) verbose = 1;
	            else verbose++;
	        if (verbose) errstd = stdout;
		break;
	    case 'V':
		version = 1;
		break;
#if !__MSDOS__
	    case 'w':
		cfg_set(cf_options,"nowarn",NULL,NULL);
		nowarn = 1;
		if ( (*argv)[2] == '+' ) nowarn = -1;
		break;
	    case 'x':
		cfg_set(cf_options,RAID_EXTRA_BOOT,param,NULL);
		break;
#endif /* !__MSDOS__ */
	    case 'X':
#if VERSION_MINOR>=50 && !__MSDOS__
{
		printf(
		"-DBOOT_PARAMS_1=%d -DBOOT_PARAMS_2=%d  PATH_MAX=%d"
		  "\n"
		  ,
		  (int)sizeof(BOOT_PARAMS_1),
		  (int)sizeof(BOOT_PARAMS_2),
		  PATH_MAX
		     );
}
{
#include "bitmap.h"
	RGB pal[16];
	RGB2 pal2[16];
	
	printf("\nBMFH=%d BMH=%d BMH2=%d RGB=%d(%d) RGB2=%d(%d) LH=%d\n",
	(int)sizeof(BITMAPFILEHEADER),
	(int)sizeof(BITMAPHEADER),
	(int)sizeof(BITMAPHEADER2),
	(int)sizeof(RGB),
	(int)sizeof(pal),
	(int)sizeof(RGB2),
	(int)sizeof(pal2),
	(int)sizeof(BITMAPLILOHEADER) );
	printf("\nBPB=%d BP_DOS=%d\n",
		(int)sizeof(BIOS_PARAMETER_BLOCK),
		(int)sizeof(BOOT_PARAMS_DOS)
		  );
}
#ifdef LCF_FIRST6
	printf("\nSECTOR_ADDR6=%d\n", (int)sizeof(SECTOR_ADDR6));
#endif

#endif /* VERSION_MINOR>=50 && !__MSDOS__ */

#if !__MSDOS__
{
  unsigned int j;
  if (verbose>=5) {
    if (crc(First.data,First.size)) {
	j = crc(First.data,First.size-4);
	brev(j);
	printf("1=0x%x\n", j);
    }
    if (crc(Second.data,Second.size)) {
	j = crc(Second.data,Second.size-4);
	brev(j);
	printf("2=0x%x\n", j);
    }
    if (crc(Third.data,Third.size)) {
	j = crc(Third.data,Third.size-4);
	brev(j);
	printf("3=0x%x\n", j);
    }
    if (crc(Bitmap.data,Bitmap.size)) {
	j = crc(Bitmap.data,Bitmap.size-4);
	brev(j);
	printf("B=0x%x\n", j);
    }
    if (crc(Chain.data,Chain.size)) {
	j = crc(Chain.data,Chain.size-4);
	brev(j);
	printf("C=0x%x\n", j);
    }
    if (crc(Mbr.data,Mbr.size)) {
	j = crc(Mbr.data,Mbr.size-4);
	brev(j);
	printf("M=0x%x\n", j);
    }
    if (crc(Mbr2.data,Mbr2.size)) {
	j = crc(Mbr2.data,Mbr2.size-4);
	brev(j);
	printf("N=0x%x\n\n", j);
    }
  }
}

#if BETA_TEST
{
    int i, k=0;
extern int has_partitions_beta(dev_t dev);	/* defined in geometry.c */


    printf("\n");
    for (i=0; i<256; i++) {
	if ( has_partitions_beta(MKDEV(i,0)) != has_partitions(MKDEV(i,0)) ) {
	    printf("Major device = %d is not configured.\n", i);
	    k ++;
	}
    }
    printf("k = %d (should be 0)\n\n", k);
}
#endif

#if VERSION_MINOR>=50
{
	dev_t dev; int i;
	BOOT_VOLID x;
	BOOT_SECTOR b;
	dev = 0xFFF0;
	i = dev;
	printf("dev_t is %ssigned size=%d  i=%08X\n", i==0xFFF0 ? "un" : "", (int)sizeof(dev_t), i);
	printf("size of BOOT_VOLID = %d   BOOT_SECTOR = %d\n", (int)sizeof(x), (int)sizeof(b));
	printf("Size of MENUTABLE = %d\n", (int)sizeof(MENUTABLE));
}
#endif
		printf("\nCFLAGS = " CFLAGS "\n");
		printf("\nglibc version %d.%d\n", __GLIBC__, __GLIBC_MINOR__);
		printf("Kernel Headers included from  %d.%d.%d\n",
			LINUX_VERSION_CODE>>16,
			LINUX_VERSION_CODE>>8 & 255,
			LINUX_VERSION_CODE & 255);
#endif /* !__MSDOS__ */
		printf("\nMAX_IMAGES = %d\t\tc=%d, s=%d, i=%d, "
				"l=%d, ll=%d, f=%d, d=%d, ld=%d\n\n",
			MAX_IMAGES, (int)sizeof(char),
			(int)sizeof(short), (int)sizeof(int),
			(int)sizeof(long), (int)sizeof(
#if !__MSDOS__
			long
#endif /* !__MSDOS__ */
 			     long),
			(int)sizeof(float), (int)sizeof(double),
			(int)sizeof(long double)
			);
#if __MSDOS__ || 1
		printf("\nIMAGE_DESCR = %d   DESCR_SECTORS = %d\n",
			(int)sizeof(IMAGE_DESCR), (int)sizeof(DESCR_SECTORS));
#endif /* __MSDOS__ */
		exit(0);
#if !__MSDOS__
	    case 'z':
		zflag++;	/* force zero of MBR 8-byte area */
		break;
	    case 'Z':
		cfg_set(cf_options,"bios-passes-dl",param,NULL);
		break;
#endif /* !__MSDOS__ */
	    default:
		usage(name);
	}
    }
    if (argc) usage(name);
#if !__MSDOS__
    if (!new_root) new_root = getenv("ROOT");
    if (new_root && *new_root) {
	pp_fd = fopen(PARTITIONS, "r");
	if (chroot(new_root) < 0) die("chroot %s: %s",new_root,strerror(errno));
	if (chdir("/dev") < 0  &&  nowarn < 1 )
	    fprintf(errstd, "Warning: root at %s has no /dev directory\n", new_root);
	if (chdir("/") < 0) die("chdir /: %s",strerror(errno));
    }
    if (atexit(temp_remove)) die("atexit() failed");
    if (version+activate+instmbr+(tell_param!=NULL) > 1) usage(name);
    if (activate) do_activate(act1, act2);
#endif /* !__MSDOS__ */
    if (verbose > 0 || version) {
       printf("LILO version %d.%d%s%s", VERSION_MAJOR, VERSION_MINOR,
	      VERSION_EDIT, test ? " (test mode)" : "");
	if (version && verbose<=0) {
	    printf("\n");
	    return 0;
	}
	printf(", Copyright (C) 1992-1998 Werner Almesberger\n"
	       "Development beyond version 21 Copyright (C) 1999-2005 John Coffman\n"
	       );
        if (verbose>0) {
#if VERSION_MINOR>=50 && !__MSDOS__
#include <sys/utsname.h>
	    struct utsname buf;
#endif
            printf("Released %s%s and compiled at %s on %s%s\n",
		VERSION_DATE, comma ? "," : "", __TIME__, __DATE__, semi);
#if VERSION_MINOR>=50 && !__MSDOS__
	    if (uname(&buf)==0) {
		printf("Running %s kernel %s\n", buf.sysname, buf.release);
	    }
#endif
	}
        printf("\n");
        if (version) return 0;
    }

    if (verbose > 0) errstd = stdout;
#if !__MSDOS__
    preload_types();
    if (geometric & (geometric-1))
	die ("Only one of '-g', '-l', or '-L' may be specified");

    if (tell_param) tell_early = strcasecmp(tell_param, "chrul")
    				&& strcasecmp(tell_param, "ebda");
    if (eflag) do_bitmap_edit(bitmap_file);
    if (tell_param && tell_early) probe_tell(tell_param);
    if (instmbr) do_install_mbr(act1, act2);
#endif /* !__MSDOS__ */    

    fd = cfg_open(config_file);
    more = fd<0 ? 0 : cfg_parse(cf_options);
    
#if !__MSDOS__
    temp = cfg_get_flag(cf_options,"nowarn");
#endif /* !__MSDOS__ */
    if (nowarn < 0) nowarn = 0;
    else nowarn = temp;

    if (verbose>=6) printf("main: cfg_parse returns %d\n", more);

#if !__MSDOS__
    if (tell_param && !tell_early) probe_tell(tell_param);

    if (!nowarn) {
	if (fstat(fd,&st) < 0) {
	    fprintf(errstd,"fstat %s: %s\n",config_file,strerror(errno));
	    exit(1);
	}
	if (S_ISREG(st.st_mode)) {
	    if (st.st_uid)
		fprintf(errstd,"Warning: %s should be owned by root\n",
		  config_file);
	    else if (st.st_mode & (S_IWGRP | S_IWOTH))
		    fprintf(errstd,"Warning: %s should be writable only for "
		      "root\n",config_file);
	    config_read = !!(st.st_mode & (S_IRGRP | S_IROTH));
	}
    }
    preload_dev_cache();
    
    if (verbose<0 && cfg_get_strg(cf_options,"verbose"))
	verbose = to_number(cfg_get_strg(cf_options,"verbose"));
    if (verbose<0) verbose = 0;
    if (verbose) errstd = stdout;

    compact = cfg_get_flag(cf_options,"compact");
    geom = cfg_get_flag(cf_options,"geometric");
    linear = cfg_get_flag(cf_options,"linear");
    lba32  = cfg_get_flag(cf_options,"lba32");
    
    if (geom+linear+lba32 > 1)
	die("May specify only one of GEOMETRIC, LINEAR or LBA32");
    if (geometric) {
	if (!nowarn && (geom+linear+lba32 > 0))  
	    fprintf(errstd,"Ignoring entry '%s'\n", geom ? "geometric" :
	    	linear ? "linear" : "lba32");
	geom = linear = lba32 = 0;
	if (geometric==AD_LBA32) lba32 = 1;
	else if (geometric==AD_LINEAR) linear = 1;
	else if (geometric==AD_GEOMETRIC) geom = 1;
    }    
    if (geom+linear+lba32 == 0) {
	if (!nowarn && verbose) fprintf(errstd,"Warning: LBA32 addressing assumed\n");
	lba32 = 1;
    }
    if (linear && !nowarn) fprintf(errstd,
    	"\nWarning:  LINEAR is deprecated in favor of LBA32:  LINEAR specifies 24-bit\n"
	"  disk addresses below the 1024 cylinder limit; LBA32 specifies 32-bit disk\n"
	"  addresses not subject to cylinder limits on systems with EDD bios extensions;\n"
	"  use LINEAR only if you are aware of its limitations.\n\n");
    
    if (identify) identify_image(identify,ident_opt);

    if (uninstall)
	bsect_uninstall(uninst_dev ? uninst_dev : cfg_get_strg(cf_options,
	      "boot"),cfg_get_strg(cf_options,"backup"),validate);
#endif /* !__MSDOS__ */

    if (reboot_arg) {
	map_patch_first(cfg_get_strg(cf_options,"map") ? cfg_get_strg(
	      cf_options,"map") : MAP_FILE, reboot_arg);
	exit(0);
    }

#if !__MSDOS__
    if ( (param = cfg_get_strg(cf_options,"bios-passes-dl")) ) {
	if (strchr("YyTt1", *param)) bios_passes_dl = DL_GOOD;
	if (strchr("NnFf0", *param)) bios_passes_dl = DL_BAD;
    }
    if (bios_passes_dl == DL_NOT_SET) 	check_bios();	/* in probe.c */

    if (!nowarn && compact && (linear || lba32) && verbose>=2)
	fprintf(errstd,"Warning: COMPACT may conflict with %s on some "
		"systems\n", lba32 ? "LBA32" : "LINEAR");

    geo_init(cfg_get_strg(cf_options,"disktab"));
#endif /* !__MSDOS__ */
    if (query)
	show_images(!cfg_get_strg(cf_options,"map") ? MAP_FILE :
	      cfg_get_strg(cf_options,"map"));

#if !__MSDOS__
/*************************************************/
/*  Doing a real install (may be test mode)      */
/*************************************************/

/* test for a RAID installation */
	raid_offset = raid_setup();
	if (verbose >= 2) {
	    printf("raid_setup returns offset = %08X  ndisk = %d\n", raid_offset, ndisk);
	    dump_serial_nos();    
	}

	if (verbose >=2 && do_md_install)
	    printf("raid flags: at bsect_open  0x%02X\n", raid_flags);

	bsect_open(
		cfg_get_strg(cf_options,"boot"),
		cfg_get_strg(cf_options,"map") ?
			cfg_get_strg(cf_options,"map") : MAP_FILE,
		cfg_get_strg(cf_options,"install"),
		cfg_get_strg(cf_options,"delay") ?
			timer_number(cfg_get_strg(cf_options,"delay")) : 0,
		cfg_get_strg(cf_options,"timeout") ?
			timer_number(cfg_get_strg(cf_options,"timeout")) : -1,
		raid_offset );
	if (more) {
	    cfg_init(cf_top);
	    if (cfg_parse(cf_top)) cfg_error("Syntax error");
	}
	
	temp = bsect_number();
	if (temp==0) die("No images have been defined.");
	else if (temp<0) die("Default image doesn't exist.");
	
	check_fallback();
	check_unattended();
	
	if (verbose>=2) dump_serial_nos();
	if (do_md_install) raid_final();
	else if (!test) {
	    char *cp;
	    
	    if (verbose) printf("Writing boot sector.\n");

	    cp = cfg_get_strg(cf_options,"force-backup");
	    if (cp) bsect_update(cp,1,0);
	    else bsect_update(cfg_get_strg(cf_options,"backup"),0,0);

	} 
	else {
	    bsect_cancel();
	    if (passw)
	        printf("The password crc file has *NOT* been updated.\n");

	    printf("The boot sector and the map file have *NOT* been "
	      "altered.\n");
	}
	if (verbose>=4) dump_serial_nos();
#else  /* __MSDOS__ */
	die("No option switches specified:  -q, -R, or -V");
#endif /* __MSDOS__ */
	
    return 0;
}