When system calls indicate an error they return -1, not some arbitrary
value < 0. errno is only updated in this case. Change all (most?)
callers of syscalls to follow this better, and let's see if this strictness
helps us in the future.

Revert last. Breaks landisk snap building for currently unknown
reason.

Noticed by deraadt@

Don't allow the bootstrap to overlap the start of the OpenBSD area of
the disk. Even if the OpenBSD area starts with FS_UNUSED or FS_BOOT
partitions.

ok deraadt@ as part of larger diff

Remove 'overlap_allowance' parameter from bootstrap().

It was added to support Vax. Vax is dead Jim.

ok deraadt@

Replace lseek/[read|write] with pread|pwrite.

ok millert@ a while ago.

LABELSECTOR is a DEV_BSIZE quantity. So multiply by DEV_BSIZE and not
d_secsize when calculating disklabel location.

ok jsing@

Add an extra argument to bootstrap() to allow for a limited overlap between an
existing partition and the boot blocks span, and update all callers to require
an overlap limit of zero sectors (thus not changing their behaviour).

Then, add proper support for vax: copy the 2nd-stage boot block to /boot and
install the 1st-stage boot block at the beginning of the disk, retaining the
disklabel; allow for an overlap of up to 16 sectors, which is perfectly fine
as long as your `a' partition is FFS.

Note that regular installs will not even have such an overlap, because the
default OpenBSD span on a disk on vax starts at sector 16, but installation
media use sperific layout which require this.

ok krw@

first batch of cleanup to programs based upon the namespace cleanups
in net/pfvar.h sys/proc.h sys/ucred.h arpa/nameser.h
change to PATH_MAX, reduce use of MIN() and MAX(), HOST_NAME_MAX+1,
LOGIN_NAME_MAX, etc etc
ok millert guenther, some review by doug

Apply/fix OpenBSD tag.

ok jsing@

Use calloc() instead of malloc()/memset().

From Benjamin Baier.

Round the size of the bootstrap up to a multiple of the disk sector size.
Some bootstraps are already built this way, however others are not.

Various code clean ups - add a missing header, add a missing prototype,
add some casts, tweak some types and variable names.

Provide a bootstrap implementation (effectively a `disklabel -B'
equivalent) for use with architectures like hppa, landisk and vax.

Revert last. Breaks landisk snap building for currently unknown
reason.

Noticed by deraadt@

Don't allow the bootstrap to overlap the start of the OpenBSD area of
the disk. Even if the OpenBSD area starts with FS_UNUSED or FS_BOOT
partitions.

ok deraadt@ as part of larger diff

Remove 'overlap_allowance' parameter from bootstrap().

It was added to support Vax. Vax is dead Jim.

ok deraadt@

Replace lseek/[read|write] with pread|pwrite.

ok millert@ a while ago.

LABELSECTOR is a DEV_BSIZE quantity. So multiply by DEV_BSIZE and not
d_secsize when calculating disklabel location.

ok jsing@

Add an extra argument to bootstrap() to allow for a limited overlap between an
existing partition and the boot blocks span, and update all callers to require
an overlap limit of zero sectors (thus not changing their behaviour).

Then, add proper support for vax: copy the 2nd-stage boot block to /boot and
install the 1st-stage boot block at the beginning of the disk, retaining the
disklabel; allow for an overlap of up to 16 sectors, which is perfectly fine
as long as your `a' partition is FFS.

Note that regular installs will not even have such an overlap, because the
default OpenBSD span on a disk on vax starts at sector 16, but installation
media use sperific layout which require this.

ok krw@

first batch of cleanup to programs based upon the namespace cleanups
in net/pfvar.h sys/proc.h sys/ucred.h arpa/nameser.h
change to PATH_MAX, reduce use of MIN() and MAX(), HOST_NAME_MAX+1,
LOGIN_NAME_MAX, etc etc
ok millert guenther, some review by doug

Apply/fix OpenBSD tag.

ok jsing@

Use calloc() instead of malloc()/memset().

From Benjamin Baier.

Round the size of the bootstrap up to a multiple of the disk sector size.
Some bootstraps are already built this way, however others are not.

Various code clean ups - add a missing header, add a missing prototype,
add some casts, tweak some types and variable names.

Provide a bootstrap implementation (effectively a `disklabel -B'
equivalent) for use with architectures like hppa, landisk and vax.

Remove 'overlap_allowance' parameter from bootstrap().

It was added to support Vax. Vax is dead Jim.

ok deraadt@

Replace lseek/[read|write] with pread|pwrite.

ok millert@ a while ago.

LABELSECTOR is a DEV_BSIZE quantity. So multiply by DEV_BSIZE and not
d_secsize when calculating disklabel location.

ok jsing@

Add an extra argument to bootstrap() to allow for a limited overlap between an
existing partition and the boot blocks span, and update all callers to require
an overlap limit of zero sectors (thus not changing their behaviour).

Then, add proper support for vax: copy the 2nd-stage boot block to /boot and
install the 1st-stage boot block at the beginning of the disk, retaining the
disklabel; allow for an overlap of up to 16 sectors, which is perfectly fine
as long as your `a' partition is FFS.

Note that regular installs will not even have such an overlap, because the
default OpenBSD span on a disk on vax starts at sector 16, but installation
media use sperific layout which require this.

ok krw@

first batch of cleanup to programs based upon the namespace cleanups
in net/pfvar.h sys/proc.h sys/ucred.h arpa/nameser.h
change to PATH_MAX, reduce use of MIN() and MAX(), HOST_NAME_MAX+1,
LOGIN_NAME_MAX, etc etc
ok millert guenther, some review by doug

Apply/fix OpenBSD tag.

ok jsing@

Use calloc() instead of malloc()/memset().

From Benjamin Baier.

Round the size of the bootstrap up to a multiple of the disk sector size.
Some bootstraps are already built this way, however others are not.

Various code clean ups - add a missing header, add a missing prototype,
add some casts, tweak some types and variable names.

Provide a bootstrap implementation (effectively a `disklabel -B'
equivalent) for use with architectures like hppa, landisk and vax.

Replace lseek/[read|write] with pread|pwrite.

ok millert@ a while ago.

LABELSECTOR is a DEV_BSIZE quantity. So multiply by DEV_BSIZE and not
d_secsize when calculating disklabel location.

ok jsing@

Add an extra argument to bootstrap() to allow for a limited overlap between an
existing partition and the boot blocks span, and update all callers to require
an overlap limit of zero sectors (thus not changing their behaviour).

Then, add proper support for vax: copy the 2nd-stage boot block to /boot and
install the 1st-stage boot block at the beginning of the disk, retaining the
disklabel; allow for an overlap of up to 16 sectors, which is perfectly fine
as long as your `a' partition is FFS.

Note that regular installs will not even have such an overlap, because the
default OpenBSD span on a disk on vax starts at sector 16, but installation
media use sperific layout which require this.

ok krw@

first batch of cleanup to programs based upon the namespace cleanups
in net/pfvar.h sys/proc.h sys/ucred.h arpa/nameser.h
change to PATH_MAX, reduce use of MIN() and MAX(), HOST_NAME_MAX+1,
LOGIN_NAME_MAX, etc etc
ok millert guenther, some review by doug

Apply/fix OpenBSD tag.

ok jsing@

Use calloc() instead of malloc()/memset().

From Benjamin Baier.

Round the size of the bootstrap up to a multiple of the disk sector size.
Some bootstraps are already built this way, however others are not.

Various code clean ups - add a missing header, add a missing prototype,
add some casts, tweak some types and variable names.

Provide a bootstrap implementation (effectively a `disklabel -B'
equivalent) for use with architectures like hppa, landisk and vax.