defflag DEBUG_EXEC

Fix a typo in r1.243: test for STACKALIGN not STACKLALIGN:

"If STACKALIGN is defined, use it instead of ALIGN. Some arches need a
stack more aligned that ALIGN will give."

Provide a better fix for the checks

Change aprint_verbose() to a normal printf() surrounded by #ifdef DIAGNOSTIC

Fix check for VM_MIN_ADDRESS since it doesn't need to be a constant

fix compilation for VM_MIN_ADDRESS == 0

Move debug -> verbose

On a verbose kernel boot show why executables are denied due to their start
adresses. This will hardly ever occure in real-life.

First stage of support for Extended API set 2. Most of the think is
unimplemented, except enough of linkat(2) to hardlink to a symlink.

Everything new in headers is guarded #ifdef _INCOMPLETE_XOPEN_

First stage of support for Extended API set 2. Most of the think is
unimplemented, except enough of linkat(2) to hardlink to a symlink.

Everything new in headers is guarded #ifdef _INCOMPLETE_XOPEN_C063 since
some software (e.g.: xcvs in our own tree) will assume they can use openat(2)
when AT_FDCWD is defined. _INCOMPLETE_XOPEN_C063 will go away once support
will be completed.

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Add some more MI hook points for PCU. Discard the PCU state at lwp_exit and
at exec time. Before forking, save the PCU state so that cpu_lwp_fork
doesn't have. Remove MD code which did that before.

kern/42030 - tracking of file descriptors by ktrace/kdump

Remove IRIX emulation

Make debugging code compile.

fix debugging printfs.

Refactor ps_strings access. Based on PK_32, write either the normal
version or the 32bit compat layout in execve1. Introduce a new function
copyin_psstrings for reading it back from userland and conv

Refactor ps_strings access. Based on PK_32, write either the normal
version or the 32bit compat layout in execve1. Introduce a new function
copyin_psstrings for reading it back from userland and converting it to
the native layout. Refactor procfs to share most of the code with the
kern.proc_args sysctl handler.

This material is based upon work partially supported by
The NetBSD Foundation under a contract with Joerg Sonnenberger.

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better debugging messages.

Ensure that the LWP private area has a consistent value after exec.

Borrow the lwpctl data area from the parent for the vfork() child.
Otherwise the child will incorrectly see it is not running on any
CPU. Among other things, this fixes crashes from having
LD_PRELOA

Borrow the lwpctl data area from the parent for the vfork() child.
Otherwise the child will incorrectly see it is not running on any
CPU. Among other things, this fixes crashes from having
LD_PRELOAD=libpthread.so set in the env.

reviewed by tech-kern

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fix snafu

Support FD_CLOEXEC in rump kernels.

Add more detailed debug printfs (one for each error case).

- Fix a few possible locking issues in execve1() and exit1(). Add a note
that scheduler locks are special in this regard - adaptive locks cannot
be in the path due to turnstiles. Randomly spott

- Fix a few possible locking issues in execve1() and exit1(). Add a note
that scheduler locks are special in this regard - adaptive locks cannot
be in the path due to turnstiles. Randomly spotted/reported by uebayasi@.
- Remove unused lwp_relock() and replace lwp_lock_retry() by simplifying
lwp_lock() and sleepq_enter() a little.
- Give alllwp its own cache-line and mark lwp_cache pointer as read-mostly.

OK ad@

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Abolish the SAVENAME and HASBUF flags. There is now always a buffer,
so the path in a struct componentname is now always valid during VOP
calls.

Abolish struct componentname's cn_pnbuf. Use the path buffer in the
pathbuf object passed to namei as work space instead. (For now a pnbuf
pointer appears in struct nameidata, to support certain uncl

Abolish struct componentname's cn_pnbuf. Use the path buffer in the
pathbuf object passed to namei as work space instead. (For now a pnbuf
pointer appears in struct nameidata, to support certain unclean things
that haven't been fixed yet, but it will be going away in the future.)

This removes the need for the SAVENAME and HASBUF namei flags.

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Introduce struct pathbuf. This is an abstraction to hold a pathname
and the metadata required to interpret it. Callers of namei must now
create a pathbuf and pass it to NDINIT (instead of a string an

Introduce struct pathbuf. This is an abstraction to hold a pathname
and the metadata required to interpret it. Callers of namei must now
create a pathbuf and pass it to NDINIT (instead of a string and a
uio_seg), then destroy the pathbuf after the namei session is
complete.

Update all namei call sites accordingly. Add a pathbuf(9) man page and
update namei(9).

The pathbuf interface also now appears in a couple of related
additional places that were passing string/uio_seg pairs that were
later fed into NDINIT. Update other call sites accordingly.

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