MFC 306564: Expose kernel-only errno values if _WANT_KERNEL_ERRNO is defined.

The kernel uses a few negative errno values for internal conditions
such as requesting a system call restart. Normally these errno values
are not exposed to userland. However, kdump needs access to these
values as some of then can be present in a ktrace system call return
record. Previously kdump was defining _KERNEL to gain access to ehse
values, but was then having to manually declare 'errno' (and doing it
incorrectly). Now, kdump uses _WANT_KERNEL_ERRNO instead of _KERNEL
and uses the system-provided declaration of errno.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

POSIX 1003.1-2008: add ENOTRECOVERABLE, EOWNERDEAD errnos.

errno.h: fix couple of whitespace nits

Submitted by: bde (a half of the changes)
MFC after: 1 week

Add ECAPMODE, "Not permitted in capability mode", a new kernel errno
constant to indicate that a system call (or perhaps an operation requested
via a system call) is not permitted for a capability mode process.

Submitted by: anderson
Sponsored by: Google, Inc.
Obtained from: Capsicum Project
MFC after: 1 week

Add a new errno, ENOTCAPABLE, to be returned when a process requests an
operation on a file descriptor that is not authorized by the descriptor's
capability flags.

MFC after: 1 month
Sponsored by: Google

Add some missing errnos from POSIX. Nothing in FreeBSD generates
these at the moment, but applications that test for them will now
have a better chance of compiling.

I have intentionally omitted errnos that are only good for STREAMS,
since apps that use STREAMS won't compile anyway. The exception is
EPROTO, which was apparently intended for STREAMS, but worth having
anyway because Linux (mis)uses it for other things.

/* -> /*- for license, minor formatting changes

Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core

Copyin and copyout are only possible from a process-native thread,
and therefore we need a way for ioctl handlers to run in that thread
in GEOM. Rather than invent a complicated registration system to
recognize which ioctl handler to use for a given ioctl, we still
schedule all ioctls down the tree as bio transactions but add a
special return code that means "call me directly" and have the
geom_dev layer do that.

Use this for all ioctls that make it as far as a diskdriver to
avoid any backwards compatibility problems.

Requested by: scottl
Sponsored by: DARPA & NAI Labs

s/EDOFUS/EDOOFUS/

Persuaded by: Google

Update ELAST.

Introduce a new error return code:
#define EDOFUS 88 /* Programming error */
This can be used to signal error situations which indicate that the
program logic or assumptions is deficient.

More s/file system/filesystem/g

Remove __P

Add new errno ``ENOATTR''.

Tiny style change. Whitespace only change.
Use tab after #define ENOTSUP.

Reviewed by: mike

Back out prev. change. According to bde:
_POSIX_SOURCE means POSIX.1-1990, not the current version of POSIX.

EOVERFLOW is POSIXed, so move it out #ifndef _POSIX_SOURCE section

Add ENOTSUP, which is specified as an error return value for various
POSIX/SUSv2 functions.

Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot). This is consistant with the other
BSD's who made this change quite some time ago. More commits to come.

$Id$ -> $FreeBSD$

typo in comment

PR: 11285
Submitted by: Chris Costello <chris@calldei.com>
Reviewed by: phk

Added 3 new errno values, requred by various standards: EOVERFLOW,
ECANCELED, EILSEQ.

Fixed ibcs2 and especially linux EIDRM and ENOMSG errno mapping.
Reviewed by: Dan Nelson <dnelson@emsphone.com>

Make errno finally and permanently thread-aware so that it is no longer
necessary to compile with _THREAD_SAFE defined. This means that people
will get thread-aware code whether they like it or not. This change
is required to allow a process to link against libpthread and libc
to use kernel threads (and prevent each thread from clobbering another
thread's errno just be doing a syscall).

This is bound to break some ports, but it is strictly allowed by ANSI C,
so anything that breaks as a result was already broken anyway 8-).
"Sorry".

Add EIDRM errno (PR 176), ENOMSG errno (myself) for prober sysv_ipc.

Added a kernel-only error code ENOICTL. This will be returned from
low level ioctl routines instead of the magic number -1 so that
callers can distinguish it from ERESTART (which happens to be -1).
-1 meant that the ioctl was not handled at the called level.
ERESTART is normal when a sleeping ioctl is interrupted. ERESTART
got converted to ENOTTY instead of restarting the ioctl. Many
(most?) ioctls can not be restarted safely, but this is apparently
supposed to be handled by drivers converting ERESTART to EINTR.
I first saw this problem for TIOCDRAIN. Justin saw if for disk
ioctls.

Added missing parentheses.

Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

make the declaration of the __error() function C++ safe. Otherwise,
the linker comes up with undefined variables because of the #define errno
when using _THREAD_SAFE.

Reviewed by: julian and (hsu?)
Submitted by: John Birrel(L?)

changes for threadsafe operations

Made them all idempotent.
Reviewed by:
Submitted by:

Added $Id$

This commit was generated by cvs2svn to compensate for changes in r1541,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite Kernel Sources