revert previous commit since it breaks the build on NetBSD and
apparently that's considered important

When including this from a tools build, avoid defining _PWD_H_ since
that macro causes DragonFly's util.h to define conflicting routines.

merge christos-time_t

kill _NETBSD_TOOLS.

Introduce _NETBSD_TOOLS for symbols the are needed in tools build

Make namespace protection feature tests for reentrant functions more
accurate (and actually less restrictive).

Add getpwent_r, getgrent_r

de-__P -- the hack is long since useless. Discussed with christos,
matt, kleink, others. Approved by christos.

modify footprint of pw_gensalt().

Add pw_gensalt, remove bcrypt_gensalt.

Overhaul the use of nsdispatch(3) by public APIs so that the back-end
methods use va_list in a manner that is directly related to the public API.
This makes it much easier to write dynamic nsswitch b

Overhaul the use of nsdispatch(3) by public APIs so that the back-end
methods use va_list in a manner that is directly related to the public API.
This makes it much easier to write dynamic nsswitch backends for getpwent(3).
Per my proposal on tech-userlevel.

Implement getpwgid_r() and getpwnam_r() APIs per the POSIX 1003.1, 2004 Ed.
These aren't fully reentrant or threadsafe yet, because the compat stuff
currently uses non-reentrant data sources (getnetgrent(3), getpwent(3)),
and there is probably some locking to be improved in the backends.
This will be fixed in the near future.
We also need to add _SC_GETPW_R_SIZE_MAX to sysconf(3).

Fix the compat `+' prototype override so getpwnam(3) and getpwuid(3) DTRT.

Improve the description of pw_class and pw_gecos.

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Completely rework how tools/compat is done. Purge all uses/references to
_NETBSD_SOURCE as this makes cross building from older/newer versions of
NetBSD harder, not easier (and also makes the resulti

Completely rework how tools/compat is done. Purge all uses/references to
_NETBSD_SOURCE as this makes cross building from older/newer versions of
NetBSD harder, not easier (and also makes the resulting tools 'different')

Wrap all required code with the inclusion of nbtool_config.h, attempt to
only use POSIX code in all places (or when reasonable test w. configure and
provide definitions: ala u_int, etc).

Reviewed by lukem. Tested on FreeBSD 4.9, Redhat Linux ES3, NetBSD 1.6.2 x86
NetBSD current (x86 and amd64) and Solaris 9.

Fixes PR's: PR#17762 PR#25944

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Move Jason Downs's code from a 4-clause to a 3-clause licence by
removing the advertising clause. Diffs provided in PR 22410 by Joel
Baker, confirmed to the board by Jason Downs.

With additional th

Move Jason Downs's code from a 4-clause to a 3-clause licence by
removing the advertising clause. Diffs provided in PR 22410 by Joel
Baker, confirmed to the board by Jason Downs.

With additional thanks to Jason Thorpe.

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remove pw_dup()

prototype for pw_dup(3)

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

Patches provided by Joel Baker in PR 22270, verified by myself.

bcrypt_gensalt() isn't defined in any X/Open standard I've got convenient
access to, so move it into the _NETBSD_SOURCE section.

Add a new feature-test macro, _NETBSD_SOURCE. If this is defined
by the application, all NetBSD interfaces are made visible, even
if some other feature-test macro (like _POSIX_C_SOURCE) is defined.

Add a new feature-test macro, _NETBSD_SOURCE. If this is defined
by the application, all NetBSD interfaces are made visible, even
if some other feature-test macro (like _POSIX_C_SOURCE) is defined.
<sys/featuretest.h> defined _NETBSD_SOURCE if none of _ANSI_SOURCE,
_POSIX_C_SOURCE and _XOPEN_SOURCE is defined, so as to preserve
existing behaviour.

This has two major advantages:
+ Programs that require non-POSIX facilities but define _POSIX_C_SOURCE
can trivially be overruled by putting -D_NETBSD_SOURCE in their CFLAGS.
+ It makes most of the #ifs simpler, in that they're all now ORs of the
various macros, rather than having checks for (!defined(_ANSI_SOURCE) ||
!defined(_POSIX_C_SOURCE) || !defined(_XOPEN_SOURCE)) all over the place.

I've tried not to change the semantics of the headers in any case where
_NETBSD_SOURCE wasn't defined, but there were some places where the
current semantics were clearly mad, and retaining them was harder than
correcting them. In particular, I've mostly normalised things so that
_ANSI_SOURCE gets you the smallest set of stuff, then _POSIX_C_SOURCE,
_XOPEN_SOURCE and _NETBSD_SOURCE in that order.

Tested by building for vax, encouraged by thorpej, and uncontested in
tech-userlevel for a week.

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support bcrypt password. can be chosen by "blowfish" keyword in passwd.conf.
from openbsd

public prototypes should use __P(); fix entries for pwcache_{user,group}db()

- Implement pwcache_userdb(3), which changes the routines that
user_from_uid(3) and uid_from_user(3) use to lookup user information.
- Implement pwcache_groupdb(3), which changes the routines that

- Implement pwcache_userdb(3), which changes the routines that
user_from_uid(3) and uid_from_user(3) use to lookup user information.
- Implement pwcache_groupdb(3), which changes the routines that
group_from_gid(3) and gid_from_group(3) use to lookup group information.
- Ensure that private functions in pwcache.c are declared static
- Use strlcpy(3) instead of strncpy(3)

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- add _PATH_USERMGMT_CONF. resolves [bin/14305]
- add _PATH_PASSWD_CONF to be consistent with almost all other _PATH_xxx_CONF
defines, and change from using _PATH_PASSWDCONF to the former. keep th

- add _PATH_USERMGMT_CONF. resolves [bin/14305]
- add _PATH_PASSWD_CONF to be consistent with almost all other _PATH_xxx_CONF
defines, and change from using _PATH_PASSWDCONF to the former. keep the
latter for compatibility, although arguably it could be removed because
it was never in a release and was only used in one file in the tree.

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Clarify a comment.

Define _PATH_PASSWDCONF and _PASSWORD_NONDES.

NULL vs. NUL nit in comment.