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If writing the primary boot fails with EROFS, use DIOCWLABEL ioctl 

then try again because some ports have to overwrite LABELSECTOR
which might be protected by bounds_check_with_label(9) on putting
primaty bootxx.
This commit is contained in:
tsutsui 2008-05-09 10:53:55 +00:00
parent a9e4cec8d9
commit 6eaaf9f4bd
1 changed files with 53 additions and 2 deletions
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55
usr.sbin/installboot/bbinfo.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: bbinfo.c,v 1.12 2008/04/28 20:24:16 martin Exp $ */
/* $NetBSD: bbinfo.c,v 1.13 2008/05/09 10:53:55 tsutsui Exp $ */
/*-
* Copyright (c) 1998, 2002 The NetBSD Foundation, Inc.
@ -35,10 +35,15 @@
#include <sys/cdefs.h>
#if !defined(__lint)
__RCSID("$NetBSD: bbinfo.c,v 1.12 2008/04/28 20:24:16 martin Exp $");
__RCSID("$NetBSD: bbinfo.c,v 1.13 2008/05/09 10:53:55 tsutsui Exp $");
#endif /* !__lint */
#include <sys/param.h>
#ifndef HAVE_NBTOOL_CONFIG_H
#include <sys/ioctl.h>
#include <sys/dkio.h>
#include <errno.h>
#endif
#include <assert.h>
#include <err.h>
@ -96,6 +101,29 @@ shared_bbinfo_clearboot(ib_params *params, struct bbinfo_params *bbparams,
}
rv = pwrite(params->fsfd, bb, bbparams->maxsize, bbparams->offset);
#ifdef DIOCWLABEL
if (rv == -1 && errno == EROFS) {
/*
* The first sector might be protected by
* bounds_check_with_label(9)
*/
int enable;
enable = 1;
rv = ioctl(params->fsfd, DIOCWLABEL, &enable);
if (rv != 0) {
warn("Cannot enable writes to the label sector");
goto done;
}
rv = pwrite(params->fsfd, bb, bbparams->maxsize,
bbparams->offset);
/* Reset write-protect. */
enable = 0;
(void)ioctl(params->fsfd, DIOCWLABEL, &enable);
}
#endif
if (rv == -1) {
warn("Writing `%s'", params->filesystem);
goto done;
@ -260,6 +288,29 @@ shared_bbinfo_setboot(ib_params *params, struct bbinfo_params *bbparams,
}
rv = pwrite(params->fsfd, bb, bbparams->maxsize, bbparams->offset);
#ifdef DIOCWLABEL
if (rv == -1 && errno == EROFS) {
/*
* The first sector might be protected by
* bounds_check_with_label(9)
*/
int enable;
enable = 1;
rv = ioctl(params->fsfd, DIOCWLABEL, &enable);
if (rv != 0) {
warn("Cannot enable writes to the label sector");
goto done;
}
rv = pwrite(params->fsfd, bb, bbparams->maxsize,
bbparams->offset);
/* Reset write-protect. */
enable = 0;
(void)ioctl(params->fsfd, DIOCWLABEL, &enable);
}
#endif
if (rv == -1) {
warn("Writing `%s'", params->filesystem);
goto done;