Sascha Wildner [Wed, 15 Apr 2009 11:37:59 +0000 (13:37 +0200)]
pthread(3): Move pthread(3) manual page to lib/libpthread too.
It does need some further adjustment.
Sascha Wildner [Wed, 15 Apr 2009 11:28:04 +0000 (13:28 +0200)]
Remove libc_r from list of Lb values and adjust libpthread manpages' Lb.
Sascha Wildner [Wed, 15 Apr 2009 11:07:13 +0000 (13:07 +0200)]
Move pthread* manpages to lib/libpthread as they are not libc_r specific.
Sascha Wildner [Tue, 14 Apr 2009 22:44:25 +0000 (00:44 +0200)]
magic(3): Fix program name extraction from core dumps.
Remove trailing whitespace only instead of unconditionally removing the
last character from the program name (see comments).
Reported-by: hasso
Located-by: Eric J. Christeson
Taken-from: FreeBSD's libmagic
Sascha Wildner [Tue, 14 Apr 2009 03:47:15 +0000 (05:47 +0200)]
posix_spawn_file_actions_init(3) manual page: Fix wrong usage of .Fn
Sascha Wildner [Mon, 13 Apr 2009 13:40:16 +0000 (15:40 +0200)]
Sync zoneinfo database with tzdata2009f from elsie.
asia: 8.29 -> 8.30
Pakistan will observe DST from April 15, 2009 instead of May 1 like
previously planned.
Sepherosa Ziehau [Mon, 13 Apr 2009 12:35:30 +0000 (20:35 +0800)]
Add some new DLTs found in libpcap-1.0.0
Sepherosa Ziehau [Mon, 13 Apr 2009 11:37:07 +0000 (19:37 +0800)]
Allow users to turn off certain arp logging.
Obtained-from: FreeBSD
Sepherosa Ziehau [Mon, 13 Apr 2009 11:19:34 +0000 (19:19 +0800)]
Add description about sysctl nodes under net.link.ether.inet
Obtained-from: FreeBSD
Sascha Wildner [Sun, 12 Apr 2009 19:41:51 +0000 (21:41 +0200)]
pciconf(8): Raise WARNS to 6 and fix warning.
Sascha Wildner [Sun, 12 Apr 2009 18:22:23 +0000 (20:22 +0200)]
rpc.lockd(8): Raise WARNS to 3 and fix warnings.
Sascha Wildner [Sun, 12 Apr 2009 17:26:01 +0000 (19:26 +0200)]
dhclient.conf(5) manual page: Use better mdoc (taken from FreeBSD).
Sascha Wildner [Sun, 12 Apr 2009 17:25:23 +0000 (19:25 +0200)]
rcmd(3) manual page: Add missing .El
Sascha Wildner [Sun, 12 Apr 2009 16:22:27 +0000 (18:22 +0200)]
i4b(4): Reorder includes slightly to silence some compilation warnings.
Sascha Wildner [Sun, 12 Apr 2009 09:54:46 +0000 (11:54 +0200)]
i4b(4): Initialize callout handles before first accessing them.
Sascha Wildner [Sun, 12 Apr 2009 09:02:59 +0000 (11:02 +0200)]
sppp(4): Properly initialize keepalive_timeout.
Stathis Kamperis [Sun, 12 Apr 2009 11:53:55 +0000 (11:53 +0000)]
build(7): mention Makefile_upgrade.inc
This file contains all files which are obsolete as of now and can be
removed by a 'make upgrade' run.
Reviewed-by: swildner@
Sepherosa Ziehau [Sun, 12 Apr 2009 06:25:07 +0000 (14:25 +0800)]
Put lwkt_serialize_array_{enter,try,exit}() into its own header file;
name it sys/serialize2.h according to our convention.
Sepherosa Ziehau [Sun, 12 Apr 2009 06:15:51 +0000 (14:15 +0800)]
ifnet serializer split: Whack ifnet.if_serializer if driver supplies
serialize functions; mainly to catch invalid reference of if_serializer.
Sepherosa Ziehau [Sun, 12 Apr 2009 02:02:17 +0000 (10:02 +0800)]
pktgen: Use ifnet_{serialize,deserialize}_tx()
Sepherosa Ziehau [Sat, 11 Apr 2009 07:58:20 +0000 (15:58 +0800)]
Split ifnet serializer step 4/many: Add IFNET_SERIALIZE_MAIN, which is
used by polling(4) code. Now polling(4) no longer tries to hold all
of the serializers of the driver; it just holds driver's main serializer.
Sepherosa Ziehau [Sat, 11 Apr 2009 05:25:32 +0000 (13:25 +0800)]
emx(4): Add serialize/deserialize functions which just skip main serializer
Sepherosa Ziehau [Sat, 11 Apr 2009 05:10:19 +0000 (13:10 +0800)]
Factor out lwkt_serialize_array_{enter,try,exit}()
Sepherosa Ziehau [Sat, 11 Apr 2009 03:13:22 +0000 (11:13 +0800)]
Add IFNET_SERIALIZE_RX(idx)
Sepherosa Ziehau [Sat, 11 Apr 2009 03:05:06 +0000 (11:05 +0800)]
Split ifnet serializer step 3/many: We no longer need to hold RX
serializer before calling ifnet.if_input()
Sepherosa Ziehau [Sat, 11 Apr 2009 02:37:59 +0000 (10:37 +0800)]
Split ifnet serializer step 2/many: Add if_serialize_assert() function
pointer to ifnet, so that upper layer could assert ifnet's serialization
states. Remove the serialization state assertion on ifnet.if_input()
path, since the serialization state normaly has nothing to do with the
input processing.
Sepherosa Ziehau [Wed, 8 Apr 2009 12:05:06 +0000 (20:05 +0800)]
Sepherosa Ziehau [Tue, 7 Apr 2009 13:13:51 +0000 (21:13 +0800)]
Let emx(4) install its own ifnet serialize functions
Sepherosa Ziehau [Tue, 7 Apr 2009 13:11:59 +0000 (21:11 +0800)]
Put ifnet.if_serializer assertion under FIX_SERIALIZE_ASSERT
Sepherosa Ziehau [Sun, 5 Apr 2009 01:04:08 +0000 (09:04 +0800)]
Split ifnet serialize step 1/many: Add if_{serialize,deserialize,tryserialize}()
function pointers to ifnet.
These three function pointers accept ifnet struct and ifnet_serialize
enumeration.
The ifnet_serialize enumeration indicates the serialization type:
IFNET_SERIALIZE_ALL:
All of the serializers should be held. Except for if_start and if_input,
this enumeration must be used when call ifnet function pointers.
IFNET_SERIALIZE_TX:
Only transmit serializer should be held. This enumeration could be used
when calling ifnet.if_start.
IFNET_SERIALIZE_RX:
Only receive serializer should be held. This enumeration could be used
when calling ifnet.if_input.
If the NIC driver does not set these three function pointer, then if_attach()
will set them to the default ones: only one serializer (if_serializer) is used
and ifnet_serialize parameter is ignored.
Following several inline functions are added which are sheer wrappers of the
three ifnet serialize function pointers:
ifnet_serialize_{all,tx,rx}()
ifnet_deserialize_{all,tx,rx}()
ifnet_tryserialize_{all,tx,rx}()
All of the protocol layers and most of the pseudo drivers are converted.
Discussed-with: dillon@
Stathis Kamperis [Sun, 12 Apr 2009 08:41:57 +0000 (08:41 +0000)]
fts(3): fix typo in MLINK
Thomas Nikolajsen [Sun, 12 Apr 2009 06:19:15 +0000 (08:19 +0200)]
kdump: Add net/if_arp.h include
Missing in
7a80e26d5284cff1a1ddbfa4098cf939e9569155
Thomas Nikolajsen [Sun, 12 Apr 2009 06:13:37 +0000 (08:13 +0200)]
Revert "kdump: Add net/if_arp.h include"
This reverts commit
b81d560f4a7e775a5f5636141f28bdd82425b4fe.
Commit made with wrong username.
Charlie [Sun, 12 Apr 2009 05:46:40 +0000 (07:46 +0200)]
kdump: Add net/if_arp.h include
Missing in
7a80e26d5284cff1a1ddbfa4098cf939e9569155
Sascha Wildner [Sat, 11 Apr 2009 20:47:05 +0000 (22:47 +0200)]
xdr(3): Add some missing MLINKS.
Sascha Wildner [Sat, 11 Apr 2009 19:51:08 +0000 (21:51 +0200)]
libc/include/namespace.h: Add _getprogname().
Sepherosa Ziehau [Sat, 11 Apr 2009 11:50:14 +0000 (19:50 +0800)]
sln(4): Include <sys/param.h>
Sepherosa Ziehau [Sat, 11 Apr 2009 11:40:26 +0000 (19:40 +0800)]
Unbreak GENERIC building
Sepherosa Ziehau [Sat, 11 Apr 2009 11:19:41 +0000 (19:19 +0800)]
netgraph/i4b: sppp struct should start with arpcom, so netgraph could work
Reported-by: swildner@
Peter Avalos [Sat, 11 Apr 2009 08:47:31 +0000 (08:47 +0000)]
Bump the version number for the OpenSSL-0.9.8k import.
Peter Avalos [Sat, 11 Apr 2009 03:15:33 +0000 (03:15 +0000)]
Merge branch 'vendor/OPENSSL'
Peter Avalos [Sat, 11 Apr 2009 03:00:56 +0000 (03:00 +0000)]
Upgrade to OpenSSL-0.9.8k.
This fixes security issues (CVE-2009-0590, CVE-2009-0591, CVE-2009-0789)
and other minor bugs. See CHANGES for more details.
Peter Avalos [Sat, 11 Apr 2009 02:44:26 +0000 (02:44 +0000)]
Add README.DELETED to the vendor branch for OpenSSL.
This is probably a good idea for other directories as well. It's too
cumbersome not having this file available on the vendor branch, since
that's really where the work is done to remove unwanted files from the
vendor's distribution.
Peter Avalos [Sat, 11 Apr 2009 01:18:46 +0000 (01:18 +0000)]
Comment out granpt() from stdlib.h.
We don't support this yet (hopefully soon).
Noticed-by: beket
YONETANI Tomokazu [Sat, 14 Feb 2009 13:37:20 +0000 (22:37 +0900)]
Add `set -o tabcomplete' to /bin/sh
When set, it binds <tab> to the libedit filename completion function.
Taken-From: NetBSD
In our version, it's turned on by default in an interactive shell.
If you don't like it, put the following line
set +o tabcomplete >/dev/null 2>&1 || true
in your ~/.shinit (or whatever path $ENV is set to) .
Stathis Kamperis [Fri, 10 Apr 2009 22:58:20 +0000 (22:58 +0000)]
Add missing MLINKS for fts(3)
Stathis Kamperis [Fri, 10 Apr 2009 15:45:55 +0000 (15:45 +0000)]
Add missing MLINKS for bus_dma(9)
Sascha Wildner [Fri, 10 Apr 2009 18:22:08 +0000 (20:22 +0200)]
callbootd: Silence warnings.
Stathis Kamperis [Fri, 10 Apr 2009 13:55:02 +0000 (13:55 +0000)]
Add missing MLINK for STAILQ_FOREACH_MUTABLE
Stathis Kamperis [Fri, 10 Apr 2009 08:26:23 +0000 (08:26 +0000)]
Add missing MLINKS for strto{f,ld} functions
Sascha Wildner [Thu, 9 Apr 2009 09:24:42 +0000 (11:24 +0200)]
fpgetround(3): Sync manual page with FreeBSD.
Sascha Wildner [Wed, 8 Apr 2009 20:39:41 +0000 (22:39 +0200)]
trpt(8): Raise WARNS to 6 and fix warnings.
Sascha Wildner [Wed, 8 Apr 2009 20:39:02 +0000 (22:39 +0200)]
tcp_{debug,timer}.h & protosw.h: Constify some strings.
Sascha Wildner [Wed, 8 Apr 2009 19:20:58 +0000 (21:20 +0200)]
semaphore.h: Revert the last commit. NULL is not defined here.
Sascha Wildner [Wed, 8 Apr 2009 13:06:34 +0000 (15:06 +0200)]
queue(3): Sync MLINKS situation with the manual page.
Sascha Wildner [Wed, 8 Apr 2009 13:06:10 +0000 (15:06 +0200)]
queue(3): Mention SLIST_FOREACH_PREVPTR (taken from OpenBSD).
Sepherosa Ziehau [Wed, 8 Apr 2009 11:44:31 +0000 (19:44 +0800)]
altq_cbq: In restart, release ALTQ serializer to avoid dead lock
Sascha Wildner [Wed, 8 Apr 2009 07:10:37 +0000 (09:10 +0200)]
Some mdoc fixes in various places.
Sascha Wildner [Wed, 8 Apr 2009 07:09:53 +0000 (09:09 +0200)]
Add MLINKS for getgrent_r(3), getgrgid_r(3) & getgrnam_r(3).
Matthew Dillon [Tue, 7 Apr 2009 23:08:21 +0000 (16:08 -0700)]
Merge branch 'master' of ssh://crater.dragonflybsd.org/repository/git/dragonfly
Matthew Dillon [Tue, 7 Apr 2009 23:03:24 +0000 (16:03 -0700)]
HAMMER VFS - Fix edge case in mirroring code.
There is an edge case where a record is physically destroyed on the master
and a mirroring or mirror-streaming operation attempts to delete the record
on the slave using a mirror-end TID that in fact matches the create_tid of
the record. This results in a protective panic.
Fix the problem simply by not deleting such edge-case records. They will
be deleted in the next pass, since in order to have been destroyed on the
master the master must have done the operation with a larger TID then
the create_tid of the record that was destroyed.
Reported-by: Brad Frank <brad.frank@gmail.com>
Sascha Wildner [Tue, 7 Apr 2009 21:41:28 +0000 (23:41 +0200)]
Sync a couple of prototypes (mknod(), mktemp() & friends) with FreeBSD.
Thomas Nikolajsen [Tue, 7 Apr 2009 21:15:00 +0000 (23:15 +0200)]
Merge commit 'chlamydia/master'
Thomas Nikolajsen [Tue, 7 Apr 2009 20:58:26 +0000 (22:58 +0200)]
sys/types.h: Add protection of typedefs
missing in
9d66746cf7a1da0544550266a1c5cb53e776aa01
Sascha Wildner [Tue, 7 Apr 2009 20:48:44 +0000 (22:48 +0200)]
timed(8): Include <string.h> instead of <strings.h> for strlen() etc. prototypes.
Sascha Wildner [Tue, 7 Apr 2009 20:48:07 +0000 (22:48 +0200)]
ncplogin(1): Include <string.h> instead of <strings.h> for strlen() etc. prototypes.
Sascha Wildner [Tue, 7 Apr 2009 20:47:33 +0000 (22:47 +0200)]
libncp: Include <string.h> instead of <strings.h> for strlen() etc. prototypes.
Sascha Wildner [Tue, 7 Apr 2009 16:59:53 +0000 (18:59 +0200)]
pw(8): setgrent()'s return type is void.
Sascha Wildner [Tue, 7 Apr 2009 16:59:17 +0000 (18:59 +0200)]
newsyslog(8): Silence warning.
Sascha Wildner [Tue, 7 Apr 2009 16:58:08 +0000 (18:58 +0200)]
sh(1): Deconstify unsetvar()'s argument when passing it to change_env().
Sascha Wildner [Tue, 7 Apr 2009 16:56:23 +0000 (18:56 +0200)]
Include <string.h> instead of <strings.h> in various places.
Stathis Kamperis [Tue, 7 Apr 2009 11:25:40 +0000 (11:25 +0000)]
Add missing MLINKS for {getchar,putchar}_unlocked functions
Sascha Wildner [Mon, 6 Apr 2009 12:52:46 +0000 (14:52 +0200)]
Replace all casts of NULL to something with NULL.
Sascha Wildner [Mon, 6 Apr 2009 00:19:59 +0000 (02:19 +0200)]
<sys/un.h>: #include <sys/file.h> for struct file.
Sascha Wildner [Sun, 5 Apr 2009 23:45:19 +0000 (01:45 +0200)]
indent(1): Sync with FreeBSD and raise WARNS to 6.
Sascha Wildner [Sun, 5 Apr 2009 22:52:17 +0000 (00:52 +0200)]
Generally use NULL instead of explicitly casting 0 to some pointer type (part2).
Sascha Wildner [Sun, 5 Apr 2009 20:33:01 +0000 (22:33 +0200)]
Generally use NULL instead of explicitly casting 0 to some pointer type.
Sascha Wildner [Sun, 5 Apr 2009 20:31:26 +0000 (22:31 +0200)]
Use NULL instead of 0 in various places.
Sascha Wildner [Sun, 5 Apr 2009 20:28:37 +0000 (22:28 +0200)]
getnetgrent(3): Improve markup.
Sascha Wildner [Sun, 5 Apr 2009 20:09:15 +0000 (22:09 +0200)]
sys/dev/usbmisc/Makefile: Remove duplicate entry.
Peter Avalos [Mon, 23 Mar 2009 02:19:11 +0000 (16:19 -1000)]
Bump libc's version and __DragonFly_version for recent changes made.
Peter Avalos [Sat, 4 Apr 2009 05:23:27 +0000 (05:23 +0000)]
Clean up sysconf and associated headers.
* Fixes for amd64.
* Implement more keys.
* Namespace cleanups for the include files. Move definitions that are
implemented in userspace from sys/unistd.h to unistd.h.
* Try to avoid using sysctl and just provide the constants direct.
Obtained-from: FreeBSD
Peter Avalos [Sun, 22 Mar 2009 21:47:29 +0000 (11:47 -1000)]
Fix some namespace issues with grp.h and pwd.h.
* [1] endpwent, getpwent, setgrent, and setpwent are XSI extensions.
* Change setgrent's prototype to match SuS.
* SuS requires that gid_t be defined in grp.h and pwd.h, and uid_t be in
pwd.h.
[1] Obtained-from: FreeBSD
Peter Avalos [Sun, 22 Mar 2009 21:31:06 +0000 (11:31 -1000)]
Revert "Temporary hack out reentrant user database functions."
This reverts commit
75ce8d9fc3ccabbd5bd15bcf79ab1e7da8a5b4cb.
Peter Avalos [Mon, 16 Mar 2009 02:56:50 +0000 (16:56 -1000)]
Sync ttyname with FreeBSD:
* SuS says ttyname_r should return an int, so do that.
* Use devname(3) instead of rolling our own code.
* Simplify the threaded/unthreaded stuff.
Peter Avalos [Sun, 15 Mar 2009 11:16:52 +0000 (01:16 -1000)]
Sync times() with FreeBSD:
* The times(3) function returns the number of CLK_TCKs since the
startup time, not since the UNIX Epoch.
* Make the returnvalue of times(3) insensitive to changes in wall-clock.
Peter Avalos [Sun, 15 Mar 2009 11:09:48 +0000 (01:09 -1000)]
time() C99 compliance:
* time() always sets its return value in both places (if present),
even on error.
Obtained-from: FreeBSD
Peter Avalos [Sun, 15 Mar 2009 11:01:05 +0000 (01:01 -1000)]
Add a tcgetsid() function that returns session id.
Obtained-from: FreeBSD
Peter Avalos [Sun, 15 Mar 2009 10:28:51 +0000 (00:28 -1000)]
Sync syslogd with FreBSD:
* Add a flag, -T, that tells syslogd to always replace the timestamp on
messages from the network. This option lets us replace timestamps that
are correctly formatted but wrong.
* Allow comment to be placed at the end of a configuration line.
* Add a -8 switch to syslogd to prevent it from mangling 8-bit data.
* Open ctty in non-blocking mode to avoid hangs during open and close.
* Handle "*" as a priority properly.
* Dynamically determine length vs. hardcoding it.
* Free the previous message buffer (f_prevline) only after logging all
the messages and just before the process exit. Also check f_prevline for
NULL before using it.
* Add the ability to log to an arbitrary udp port as well as the
standard syslog port.
* Currently, if writing out a log entry fails, we unlink that log entry
from our internal list of logfiles. So if writev(2) fails for potentially
transient errors like ENOSPC, syslogd requires a restart, even if the
filesystem has purged. This change allows syslogd to ignore ENOSPC
space errors, so that when the filesystem is cleaned up, syslogd will
automatically start logging again without requiring the reset.
This makes syslogd(8) a bit more reliable.
* Add -C option which tells syslogd(8) to create log files if they don't
exist.
* Add cases for ENOBUFS and ENETDOWN. We need to make sure that we
catch all transient errors. This fixes situations where transient
error conditions such as network interfaces losing carrier signals
or the system running out of mbufs would result in the permanent
removal of forwarding syslog messages.
* Add -S option which allows to change the pathname of the privileged
socket /var/run/logpriv.
* Check that supplied facility is not bigger than LOG_NFACILITIES.
* Allow ':' and '%' in hostname specifications so that we can specify
IPv6 addresses and scope IDs.
* Protect against local flooder of /var/run/log. Do not loop forever in
syslog(3) if we are a priveleged program (sshd, su, etc.).
- Make syslogd open an additional socket /var/run/logpriv, with 0600
permissions.
- In libc, try to use this socket.
- Do not loop forever if we are using this socket
* Use stailqueue for sockets instead of socket buffer. Thus remove
limit for 20 sockets.
* Add possibility to specify file mode for sockets created with '-l'.
* Check that socket name in '-l' is absolute.
* Make syslog(3) thread safe.
Peter Avalos [Sun, 15 Mar 2009 09:04:16 +0000 (23:04 -1000)]
Simplify the return value of sysctlnametomib.
Obtained-from: FreeBSD
Peter Avalos [Sun, 15 Mar 2009 08:58:26 +0000 (22:58 -1000)]
WARNS: Add a prototype for __sysctl.
Obtained-from: FreeBSD
Peter Avalos [Sun, 15 Mar 2009 08:06:53 +0000 (22:06 -1000)]
Sync stringlist with FreeBSD:
* Fix a few namespace issues concerning err().
* sl_add returns an int now.
* Fix some whitespace issues in stringlist.h.
Peter Avalos [Sun, 15 Mar 2009 07:45:18 +0000 (21:45 -1000)]
Reduce setproctitle's memory footprint on libc.
Obtained-from: FreeBSD
Peter Avalos [Sun, 15 Mar 2009 04:20:21 +0000 (18:20 -1000)]
Sync setmode(3) with FreeBSD:
* Use correct error detection of realloc failure
* strtol negative return check
* use strtol to validate string instead of rolling our own
validation code
* terminate the command sequence correctly
Peter Avalos [Sun, 15 Mar 2009 03:32:32 +0000 (17:32 -1000)]
Sync popen(3) with FreeBSD:
* Convert popen()'s `pidlist' to a SLIST, for consistency.
* Protect pidlist with a mutex to avoid a race causing a duplicate
free() when the same pipe FILE is pclosed()'d in different threads,
and to avoid corrupting the linked list when adding or removing
items.
Peter Avalos [Sun, 15 Mar 2009 06:58:33 +0000 (20:58 -1000)]
Sync sys/queue.h with FreeBSD:
* Introduce REMOVE_NEXT() macro's for SLIST and STAILQ.
* Add sanity checking for QUEUE(3) TAILQs and LISTs under
INVARIANTS. Races may lead to list corruption, which can be
difficult to unravel in a post-mortem analysis. These checks verify
that the prev and next pointers are consistent when inserting or
removing elements, thus catching any corruption earlier.
* Use TRASHIT to break LIST and SLIST link pointers on element removal.
* Add more _FOREACH_MUTABLEs. Note: FreeBSD and NetBSD call these _SAFE,
but _MUTABLE is a better name, so that's what we're using.
* Add a macro for SLIST traversal 'SLIST_FOREACH_PREVPTR',
this macro keeps a pointer to the previous element's next
pointer to allow for search and O(1) removal.
* Remove CIRCLEQs and replace them with TAILQs.
Peter Avalos [Sun, 15 Mar 2009 02:43:29 +0000 (16:43 -1000)]
initgroups(): Remove unneeded includes and use gid_t.
Peter Avalos [Sun, 15 Mar 2009 02:31:59 +0000 (16:31 -1000)]
Sync glob(3) with FreeBSD:
* Change int to size_t where appropriate.
* Don't reuse *pl to skip [], it is already used for {} parts in the
loop above.
* Add support for multibyte characters.
Peter Avalos [Sun, 15 Mar 2009 01:40:26 +0000 (15:40 -1000)]
getttyent(3) fixes from FreeBSD:
* In getttyent(3), if /etc/ttys doesn't end in a newline, don't
freak out and keep trying to expand the buffer until realloc()
fails.
* Move initialization above point of first possible reference to
avoid overwriting ty_status values set from the 'type' field.
* Fix the NAME section making whatis(1) happy in particular.
Peter Avalos [Tue, 10 Mar 2009 08:30:28 +0000 (22:30 -1000)]
Sync getnetgrent with FreeBSD:
* Fix innetgr() returning false positives and negatives when reverse
netgroup matching is used.
* Remember to reset nextgrp in getnetgrent(), so that subsequent calls
to getnetgrent() doesn't return bogus information.