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Check whether superblock is writable sector.

This commit is contained in:
uch 2011-08-09 09:12:07 +00:00
parent 4c7933948b
commit 49e9e92f1d
1 changed files with 27 additions and 3 deletions
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30
sbin/newfs_v7fs/main.c
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@ -1,4 +1,4 @@
/* $NetBSD: main.c,v 1.7 2011/07/22 09:15:10 uch Exp $ */
/* $NetBSD: main.c,v 1.8 2011/08/09 09:12:07 uch Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
@ -35,7 +35,7 @@
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: main.c,v 1.7 2011/07/22 09:15:10 uch Exp $");
__RCSID("$NetBSD: main.c,v 1.8 2011/08/09 09:12:07 uch Exp $");
#endif /* not lint */
#include <sys/param.h>
@ -71,6 +71,26 @@ determine_ilist_size(v7fs_daddr_t volume_size, int32_t files)
return ilist_size;
}
static int
partition_check(struct v7fs_self *fs)
{
struct v7fs_superblock *sb = &fs->superblock;
int error;
if ((error = v7fs_superblock_load(fs))) {
warnx("Can't read superblock sector.");
}
sb->modified = 1;
if ((error = v7fs_superblock_writeback(fs))) {
if (errno == EROFS) {
warnx("Overwriting disk label? ");
}
warnx("Can't write superblock sector.");
}
return error;
}
static int
make_root(struct v7fs_self *fs)
{
@ -126,7 +146,7 @@ make_root(struct v7fs_self *fs)
v7fs_inode_writeback(fs, &inode);
if ((error = v7fs_superblock_writeback(fs))) {
errno = error;
warn("Can't write superblock.");
warnx("Can't write superblock.");
}
return error;
@ -272,6 +292,10 @@ v7fs_newfs(const struct v7fs_mount_device *mount, int32_t maxfile)
fs->endian = mount->endian;
v7fs_endian_init(fs);
if ((error = partition_check(fs))) {
return error;
}
/* Construct filesystem. */
if ((error = make_filesystem(fs, volume_size, ilist_size))) {
return error;