diff options
Diffstat (limited to 'dos/syslinux.c')
| -rw-r--r-- | dos/syslinux.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/dos/syslinux.c b/dos/syslinux.c index 000b68c3..bd76518e 100644 --- a/dos/syslinux.c +++ b/dos/syslinux.c @@ -1,6 +1,6 @@ #ident "$Id$" /* ----------------------------------------------------------------------- * - * + * * Copyright 1998-2004 H. Peter Anvin - All Rights Reserved * * This program is free software; you can redistribute it and/or modify @@ -155,7 +155,7 @@ void read_device(int drive, const void *buf, size_t nsecs, unsigned int sector) if ( err ) die("sector read error"); -} +} /* Both traditional DOS and FAT32 DOS return this structure, but FAT32 return a lot more data, so make sure we have plenty of space */ @@ -187,7 +187,7 @@ uint32_t get_partition_offset(int drive) struct deviceparams dp; dp.specfunc = 1; /* Get current information */ - + rv = 0x440d; asm volatile("int $0x21 ; setc %0" : "=abcdm" (err), "+a" (rv) @@ -195,7 +195,7 @@ uint32_t get_partition_offset(int drive) if ( !err ) return dp.hiddensecs; - + rv = 0x440d; asm volatile("int $0x21 ; setc %0" : "=abcdm" (err), "+a" (rv) @@ -249,7 +249,7 @@ void write_mbr(int drive, const void *buf) asm volatile("int $0x21 ; setc %0" : "=abcdm" (err), "+a" (rv) : "c" (0x4841), "d" (&mbr), "b" (drive)); - + if ( err ) die("mbr write error"); } @@ -276,7 +276,7 @@ void read_mbr(int drive, const void *buf) asm volatile("int $0x21 ; setc %0" : "=abcdm" (err), "+a" (rv) : "c" (0x4861), "d" (&mbr), "b" (drive)); - + if ( err ) die("mbr read error"); } @@ -412,12 +412,12 @@ static void adjust_mbr(int device, int writembr, int set_active) memcpy(sectbuf, syslinux_mbr, syslinux_mbr_len); *(uint16_t *)(sectbuf+510) = 0xaa55; } - + if ( set_active ) { uint32_t offset = get_partition_offset(device); struct mbr_entry *me = (struct mbr_entry *)(sectbuf+446); int found = 0; - + for ( i = 0 ; i < 4 ; i++ ) { if ( me->startlba == offset ) { me->active = 0x80; @@ -434,7 +434,7 @@ static void adjust_mbr(int device, int writembr, int set_active) die("multiple aliased partitions found"); } } - + write_mbr(device, sectbuf); } @@ -460,7 +460,7 @@ int main(int argc, char *argv[]) dprintf("argv[%d] = %p = \"%s\"\n", i, argv[i], argv[i]); (void)argc; /* Unused */ - + get_dos_version(); for ( argp = argv+1 ; *argp ; argp++ ) { @@ -523,7 +523,7 @@ int main(int argc, char *argv[]) putchar('\n'); exit(1); } - + ldlinux_name[0] = dev_fd | 0x40; set_attributes(ldlinux_name, 0); @@ -591,4 +591,3 @@ int main(int argc, char *argv[]) return 0; } - |