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Improve support for logical sector sizes greater than 512.

This commit is contained in:
jakllsch 2013-04-14 22:48:22 +00:00
parent e7f80397d9
commit 3106f2915c
1 changed files with 16 additions and 10 deletions
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26
sbin/fdisk/fdisk.c
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@ -1,4 +1,4 @@
/* $NetBSD: fdisk.c,v 1.144 2013/02/13 00:40:28 christos Exp $ */
/* $NetBSD: fdisk.c,v 1.145 2013/04/14 22:48:22 jakllsch Exp $ */
/*
* Mach Operating System
@ -39,7 +39,7 @@
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: fdisk.c,v 1.144 2013/02/13 00:40:28 christos Exp $");
__RCSID("$NetBSD: fdisk.c,v 1.145 2013/04/14 22:48:22 jakllsch Exp $");
#endif /* not lint */
#define MBRPTYPENAMES
@ -200,7 +200,7 @@ static daddr_t dos_disksectors;
#define DOSSECT(s,c) (((s) & 0x3f) | (((c) >> 2) & 0xc0))
#define DOSCYL(c) ((c) & 0xff)
#define SEC_IN_1M (1024 * 1024 / 512)
#define SEC_IN_1M (1024 * 1024 / secsize)
#define SEC_TO_MB(sec) ((unsigned int)(((sec) + SEC_IN_1M / 2) / SEC_IN_1M))
#define SEC_TO_CYL(sec) (((sec) + dos_cylindersectors/2) / dos_cylindersectors)
@ -460,9 +460,6 @@ out: errx(EXIT_FAILURE, "Invalid sector size %zd",
continue;
if (ch != 1)
goto out;
if ((iobuf = malloc(secsize)) == NULL)
err(EXIT_FAILURE, "Cannot allocate %zd buffer",
secsize);
break;
default:
usage();
@ -508,6 +505,12 @@ out: errx(EXIT_FAILURE, "Invalid sector size %zd",
if (open_disk(B_flag || a_flag || i_flag || u_flag) < 0)
exit(1);
if (secsize > 512) {
if ((iobuf = malloc(secsize)) == NULL)
err(EXIT_FAILURE, "Cannot allocate %zd buffer",
secsize);
}
if (read_s0(0, &mboot))
/* must have been a blank disk */
init_sector0(1);
@ -2321,8 +2324,9 @@ print_geometry(void)
printf("Disk: %s\n", disk);
printf("NetBSD disklabel disk geometry:\n");
printf("cylinders: %d, heads: %d, sectors/track: %d "
"(%d sectors/cylinder)\ntotal sectors: %"PRIdaddr"\n\n",
cylinders, heads, sectors, cylindersectors, disksectors);
"(%d sectors/cylinder)\ntotal sectors: %"PRIdaddr", "
"bytes/sector: %zd\n\n", cylinders, heads, sectors,
cylindersectors, disksectors, secsize);
printf("BIOS disk geometry:\n");
printf("cylinders: %d, heads: %d, sectors/track: %d "
"(%d sectors/cylinder)\ntotal sectors: %"PRIdaddr"\n\n",
@ -2488,7 +2492,7 @@ read_disk(daddr_t sector, void *buf)
if (*rfd == -1)
errx(1, "read_disk(); fd == -1");
off_t offs = sector * (off_t)512;
off_t offs = sector * (off_t)secsize;
off_t mod = offs & (secsize - 1);
off_t rnd = offs & ~(secsize - 1);
@ -2514,7 +2518,7 @@ write_disk(daddr_t sector, void *buf)
if (wfd == -1)
errx(1, "write_disk(); wfd == -1");
off_t offs = sector * (off_t)512;
off_t offs = sector * (off_t)secsize;
off_t mod = offs & (secsize - 1);
off_t rnd = offs & ~(secsize - 1);
@ -2576,6 +2580,7 @@ get_params(void)
guess_geometry(disklabel.d_secperunit);
disklabel.d_ncylinders = dos_cylinders;
disklabel.d_ntracks = dos_heads;
disklabel.d_secsize = 512;
disklabel.d_nsectors = dos_sectors;
} else if (ioctl(fd, DIOCGDEFLABEL, &disklabel) == -1) {
warn("DIOCGDEFLABEL");
@ -2588,6 +2593,7 @@ get_params(void)
disksectors = disklabel.d_secperunit;
cylinders = disklabel.d_ncylinders;
heads = disklabel.d_ntracks;
secsize = disklabel.d_secsize;
sectors = disklabel.d_nsectors;
/* pick up some defaults for the BIOS sizes */