update, cleanup, lint for password field extraction
From: Chris Torek <torek@BSDI.COM>

4.4BSD snapshot (revision 8.1); add 1993 to copyright

hash_open -> dbopen

don't check it in until it compiles...

use syslog instead of writing directly to stderr

convert from ndbm(3) to db(3) interface

missed a sizeof when fixed the last one

Databases don't like it when the sizes of their keys change based
on the compiler they're using. Also, might as well leave the secure db open
the fd's are marked close-on-exec.

don't use syslog, application may have already used it.
Add include files to get prototype declarations, and fix bugs found.

rework the password subsystem

new copyright notice

new strsep

don't use database for getpwent; checked in by Keith Bostic

get first key if dbm database reopened

use #define, not constant

null dereference!

use passwd.{pag,dir} with master.passwd for backward compat

_pw_set no longer used

have to call geteuid each time, program may discard permissions

shadow passwords

since user can put information in the password file (gecos field)
can get overrun and produce bad results; also, increase max line length to
1024, since gecos field used by lots of places for extra i

since user can put information in the password file (gecos field)
can get overrun and produce bad results; also, increase max line length to
1024, since gecos field used by lots of places for extra information.
bug report 4.3BSD-tahoe/bin/13

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from scratch

added LIBC_SCCS condition for sccs ids

Add copyright

made setpwfile work with getpwnam and getpwuid