make sure to bound string operation by strlcpy
(there are bunch of "strcpy is safe" comments, i think we should change them
to strlcpy as much as possible)

use strlcpy where it is more appropriate.

readlink(2) does not NUL-terminate, use with sizeof (buf-1).
from deraadt@openbsd.org; approved thorpej.

botched strncpy -> strlcpy
from xs@kittenz.org

Delint.
Remove trailing ; from uses of __weak_alias(). The macro inserts this if
needed.

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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Keep track of the number of encountered symlinks and fail with ELOOP
if they exceed MAXSYMLINKS.

Avoid infinite loop if pathname is longer than the maximum the kernel
is willing to return from getcwd().
(this can only happen in -current).

make this compile under linux

int -> size_t problems, change do { } while (0) to for (;;)

move __getcwd prototypes to libc-private header file.

XXX duplicate the prototype in getcwd regression test (which needs to
call the syscall directly for reasonably complete testing).

Use __getcwd() system call in getcwd() unless OLD_GETCWD is defined

port to svr4.

fix bcopy->memcpy with memcpy->memmove -- not strictly needed, but...

bzero->memset, bcopy->memcpy, bcmp->memcmp

backout parts of the lite2 merge; it causes undesirable lossage:
* $PWD was used if it appeared ``correct''. this `enhancment' was
not documented in getcwd(3), and caused problems for pwd(1) (which

backout parts of the lite2 merge; it causes undesirable lossage:
* $PWD was used if it appeared ``correct''. this `enhancment' was
not documented in getcwd(3), and caused problems for pwd(1) (which
uses getcwd(3)), and in turn <bsd.obj.mk> (which uses pwd) when $PWD
is set to the logical path instead of the real path (e.g, symlink
/usr/src -> /z/NetBSD-current/src).
[$PWD is set to the logical path by tcsh(1) with set symlinks=expand]
* as getcwd() without the $PWD code is just a wrapper to getcwd_physical(),
rename the latter to the latter. hack realpath() to use the getcwd().

yet another case of `it was a good idea, but...'

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trivial changes to reduce lint complaints

remove obsolete register declarations

add some fixes to realpath() that were in the old realpath.c

merge/update to lite-2

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.

This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.

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Fix RCSID's
Fix gcc warnings.

Don't cast void functions to void.

update from Lite, with local changes. fix Ids, etc.