Revert to commits as they broke few rump tests

"Include namespace.h in a few of libc source files
[...]
This change finishes elimination of usage of the global name of the
following symbols:

Revert to commits as they broke few rump tests

"Include namespace.h in a few of libc source files
[...]
This change finishes elimination of usage of the global name of the
following symbols:
- close -> _close
- execve -> _execve
- fcntl -> _fcntl
- setcontext -> _setcontext
- wait6 -> _wait6
- write -> _write
- writev -> _writev"

"Register more syscalls in namespace.h (of libc)

Add weak symbols for:
- fcntl
- close
- execve
- setcontext
- wait6
- write
- writev"

These changes broke:

fs/nfs/t_rquotad:get_nfs_be_1_both
fs/nfs/t_rquotad:get_nfs_be_1_group
fs/nfs/t_rquotad:get_nfs_be_1_user
fs/nfs/t_rquotad:get_nfs_le_1_both
fs/nfs/t_rquotad:get_nfs_le_1_group
fs/nfs/t_rquotad:get_nfs_le_1_user
lib/librumphijack/t_config:fdoff
lib/librumphijack/t_tcpip:http
lib/librumphijack/t_tcpip:nfs
lib/librumphijack/t_vfs:cpcopy
lib/librumphijack/t_vfs:mv_x
lib/librumphijack/t_vfs:paxcopy
net/net/t_forwarding:ipforwarding_fastforward_v4
net/net/t_forwarding:ipforwarding_fastforward_v6
net/net/t_forwarding:ipforwarding_fragment_v4
net/net/t_forwarding:ipforwarding_misc
net/net/t_mtudisc6:mtudisc6_basic

This revert fixes the failures, except lib/librumphijack/t_vfs.

The original changes were added in order to facilitate a usage of
sanitizers against programs linked with NetBSD's libc. It is no longer
needed, so abandon these changes.

Sponsored by <The NetBSD Foundation>

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Include namespace.h in a few of libc source files

The NetBSD Standard C Library uses internally some of its functions with
a mangled symbol name, usually "_symbol". The internal functions shall not

Include namespace.h in a few of libc source files

The NetBSD Standard C Library uses internally some of its functions with
a mangled symbol name, usually "_symbol". The internal functions shall not
use the global (public) symbols.

This change finishes elimination of usage of the global name of the
following symbols:
- close -> _close
- execve -> _execve
- fcntl -> _fcntl
- setcontext -> _setcontext
- wait6 -> _wait6
- write -> _write
- writev -> _writev

Sponsored by <The NetBSD Foundation>

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Add O_REGULAR to enforce opening of only regular files
(like we have O_DIRECTORY for directories).
This is better than open(, O_NONBLOCK), fstat()+S_ISREG() because opening
devices can have side effe

Add O_REGULAR to enforce opening of only regular files
(like we have O_DIRECTORY for directories).
This is better than open(, O_NONBLOCK), fstat()+S_ISREG() because opening
devices can have side effects.

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Avoid losing a fd (ie: close it) in the (ever so likely) case that the
fd exceeds the limits of what can be stored in a FILE (65535).

- ansify, knf.
- no functional changes

From tnozaki@: make fpos_t a complex object that keeps track of the parse
state of the stream. Change argument of the seek function to funopen() from
fpos_t to off_t. Make f{g,s}etpos() use the new f

From tnozaki@: make fpos_t a complex object that keeps track of the parse
state of the stream. Change argument of the seek function to funopen() from
fpos_t to off_t. Make f{g,s}etpos() use the new fpos_t struct, while providing
backwards compatible entry points. Approved by releng@

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Since _file is a short, check that the fd fits in it, otherwise bail with
EMFILE. We treat _file as an unsigned short to double our range, with a
special case for -1 (closed). Make a note of what we

Since _file is a short, check that the fd fits in it, otherwise bail with
EMFILE. We treat _file as an unsigned short to double our range, with a
special case for -1 (closed). Make a note of what we should do about stdio
if we ever bump libc. We could change _file in the future compatibly to an
int by putting it in the extension space but for now we don't bother.

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Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Merge the nathanw_sa branch.

make sure we preserve errno.

add and "f" flag to fopen that makes sure we are opening a plain file,
so that there is no chance to block.

back out the #ifdef _DIAGNOSTIC argument checks; too many people complained.
_DIAGASSERT() is still retained.

* use _DIAGASSERT() to check pointer arguments against NULL and file
descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attemp

* use _DIAGASSERT() to check pointer arguments against NULL and file
descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.

the first two items result in the addition of code similar to the
following in various functions:

_DIAGASSERT(path != NULL)
#ifdef _DIAGNOSTIC
if (path == NULL) {
errno = EFAULT;
return (-1);
}
#endif

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remove obsolete register declarations

Fix RCSID's
Fix gcc warnings.
Add prototypes for functions that were declared in more than one place
to local.h or extern.h and use that instead.

Merged with 4.4lite.
Changed to conform to NetBSD's new RCS Id convention.

Declare rcsid strings so they are stored in text segment.

Add RCS identifiers.

initial import of 386bsd-0.1 sources