Joerg Wunsch 6b5c2dd6a1 Fix a serious bug in syslogd regarding the handling of pipes. The bug ... would cause syslogd to eventually kill innocent processes in the system over time (note: not `could' but `would'). Many thanks to my colleague Mirko for digging into the kernel structures and providing me with the debugging framework to find out about the nature of this bug (and to isolate that syslogd was the culprit) in a rather large set of distributed machines at client sites where this happened occasionally. Whenever a child process was no longer responsive, or when syslogd receives a SIGHUP so it closes all its logging file descriptors, for any descriptor that refers to a pipe syslogd enters the data about the old logging child process into a `dead queue', where it is being removed from (and the status of the dead kitten being fetched) upon receipt of a SIGCHLD. However, there's a high probability that the SIGCHLD already arrives before the child's data are actually entered into the dead queue inside the SIGHUP handler, so the SIGCHLD handler has nothing to fetch and remove and simply continues. Whenever this happens, the process'es data remain on the dead queue forever, and since domark() tried to get rid of totally unresponsive children by first sending a SIGTERM and later a SIGKILL, it was only a matter of time until the system had recycled enough PIDs so an innocent process got shot to death. Fix the race by masking SIGHUP and SIGCHLD from both handlers mutually. Add additional bandaids ``just in case'', i. e. don't enter a process into the dead queue if we can't signal it (this should only happen in case it is already dead by that time so we can fetch the status immediately instead of deferring this to the SIGCHLD handler); for the kill(2) inside domark(), check for an error status (/* Can't happen */ :) and remove it from the dead queue in this case (which if it would have been there in the first place would have reduced the problem to a statistically minimal likelihood so i certainly would never have noticed the bug at all :). Mirko also reviewed the fix in priciple (mutual blocking of both signals inside the handlers), but not the actual code. Reviewed by: Mirko Kaffka <mirko@interface-business.de> Approved by: jkh		2000-02-28 17:49:43 +00:00
..
ac	err -> errx for malloc failure	1999-10-12 19:27:11 +00:00
accton
adduser
amd	Update for 6.0.3s1 changes.	1999-11-05 12:34:00 +00:00
ancontrol	Add driver support for the Aironet 4500/4800 series wireless 802.11	2000-01-14 20:41:03 +00:00
apm	Fixed breakage of installation of zzz.8 in previous commit. MLINKS	2000-01-25 08:39:15 +00:00
apmd	Remove Xr to apmconf(8) since it got replaced in total by apm(8).	2000-01-23 13:30:44 +00:00
arp	Fix syntax error in previous commit.	2000-01-17 01:44:16 +00:00
atm
boot0cfg
bootparamd
btxld	o Allow btxld to be compiled on 64-bit machines	2000-01-04 14:10:36 +00:00
burncd	Dont allow burn when format not selected.	2000-02-18 16:36:28 +00:00
cdcontrol	Fixed a potential buffer overflow problem, in the device name handling.	1999-12-05 20:05:45 +00:00
chkgrp	add missing .El.	1999-10-17 15:46:58 +00:00
chown	Revert rev 1.3. chown(8)-like functionality has been added to mknod(8)	2000-01-06 05:30:38 +00:00
chroot
ckdist
config	Mark the 'conflicts' keyword as obsolete, and don't generate (unused)	2000-01-29 18:14:59 +00:00
cron
crunch	Add a few features to crunchgen to simplify the use of existing	2000-02-05 10:29:19 +00:00
ctm	Correcting SECURITY warning.	2000-01-29 21:44:42 +00:00
dev_mkdb	kvm_mkdb(8) no longer exists (in .Xr) and kvm_nlist(8) has even less to do	1999-12-27 08:01:11 +00:00
diskpart
dpt
edquota
elf2exe	Use long long format specifiers and cast each parameter to long long.	1999-12-18 12:12:12 +00:00
faithd	Wording fixes	2000-02-10 19:42:42 +00:00
fdcontrol	Xref to warn(3) which is used instead of perror.	1999-10-17 15:52:26 +00:00
fdformat	Fix fdformat to not use /dev/r* device nodes anymore, this usage	2000-01-23 12:49:42 +00:00
fdwrite	Use Pa for filenames.	1999-10-17 15:57:16 +00:00
gifconfig	remove redundant ifdef's.	2000-01-07 10:02:43 +00:00
i4b	/tmp --> /var/tmp, for consistency with the rest of the example.	2000-02-17 00:43:04 +00:00
ifmcstat	remove redundant ifdef's.	2000-01-07 10:02:43 +00:00
inetd	Fix broken inet logging when wrapping options are not specified.	2000-02-22 00:27:53 +00:00
iostat	Back out previous commit minus spelling fixes. Should have asked maintainer	2000-01-24 22:08:19 +00:00
ipftest	Move basic ifilter utils to sbin where they shold have been committed by	1999-12-06 20:50:04 +00:00
ipresend	Move basic ifilter utils to sbin where they shold have been committed by	1999-12-06 20:50:04 +00:00
ipsend	Move basic ifilter utils to sbin where they shold have been committed by	1999-12-06 20:50:04 +00:00
iptest	Move basic ifilter utils to sbin where they shold have been committed by	1999-12-06 20:50:04 +00:00
IPXrouted
jail	- As jail(8) has been almost completely rewritten, prepend another copyright/	2000-02-20 02:51:11 +00:00
kbdcontrol	Define some more function keys in the keymap: panic, lshifta, rshifta, etc.	1999-12-10 04:24:27 +00:00
kbdmap	Remove invalid section name. Add missing .El. Do not dot terminate	2000-01-23 20:20:55 +00:00
kernbb	Correct spelling : ascii -> ASCII	1999-09-20 09:15:23 +00:00
keyadmin
keyserv	Use libcrypto instead of libdes.	2000-02-24 21:10:28 +00:00
kgmon	Put file names under .Pa.	1999-11-27 16:52:41 +00:00
kgzip	Fix insecure tempfile handling.	2000-01-16 21:19:04 +00:00
lpr	Type-o, change from[...] = 0 to fromb[...] = 0. The incorrect buffer	2000-01-25 01:51:21 +00:00
lptcontrol	Remove incorrect section name. Use .Pa or .Ar instead of .Em.	1999-11-27 16:54:36 +00:00
mailstats
mailwrapper	Merge from OpenBSD:	2000-01-10 03:20:13 +00:00
makemap
manctl	Remove incorrect section name. Terminate .Bl with .El.	1999-11-27 17:15:51 +00:00
memcontrol	Remove an unnecessary cross-reference to ioctl(2)	1999-10-09 16:37:37 +00:00
mergemaster	Use the new (Hi rwatson!) NO_MAKEDEV when making our temproot.	2000-02-12 22:14:02 +00:00
mixer	Terminate .Bl with .El	1999-11-27 16:55:50 +00:00
mount_nwfs	Fix various man pages to stop abusing the .Bx macro to generate	2000-01-23 01:30:05 +00:00
mount_portalfs	10 X's for mktemp(). This seems to be free from race conditions.	2000-01-10 09:33:37 +00:00
mountd	Fix various man pages to stop abusing the .Bx macro to generate	2000-01-23 01:30:05 +00:00
moused	Added the PnP ID for MouseSystems SmartScroll Mouse (serial mouse).	2000-01-24 10:26:46 +00:00
mptable	$FreeBSD$ tags moved to bottom of license aggmt.	1999-10-30 16:05:26 +00:00
mrouted
mtest
mtree	Revert part of the last commit, remove {g|s}etflags from the libc	2000-02-05 18:42:36 +00:00
named	Install additional documentation:	2000-01-10 09:05:30 +00:00
named.reload
named.restart
ndc	ndc is now a C program that communicates with named via a unix-domain	1999-11-30 06:18:10 +00:00
ndp	libipsec and IPsec related apps. (and some KAME related man pages)	2000-01-06 12:40:54 +00:00
newsyslog	.Nm corrections	1999-11-27 16:57:27 +00:00
nfsd	Use libcrypto instead of libdes.	2000-02-24 21:01:54 +00:00
ngctl	No need to try loading ng_socket.ko, as NgMkSockNode() does that	2000-01-28 00:50:28 +00:00
nghook	Fix minor typo.	1999-12-22 01:25:07 +00:00
nologin
nslookup	Link against libbind (library and headers)	1999-11-30 06:16:46 +00:00
nsupdate	Link against libbind (library and headers)	1999-11-30 06:16:46 +00:00
ntp	Merge into the manual pages the changes from 4.0.99b:	2000-02-10 13:15:47 +00:00
pccard	Merge from PAO; Add new keywords for pccard.conf, auto and default.	2000-01-26 17:54:00 +00:00
pciconf	[ repository copy of sys/pci/pci_ioctl.h to sys/sys/pciio.h happened in the	1999-12-08 17:44:04 +00:00
pcvt	Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL"	1999-12-29 05:07:58 +00:00
periodic
pim6dd	HBH hdr len correction.	2000-02-18 11:48:04 +00:00
pim6sd	Fix pathname of pim6sd.conf from /usr/local/v6/etc to /etc.	2000-02-15 18:33:22 +00:00
pkg_install	pkg_create doesn't use more(1) for displaying +DISPLAY files, it	2000-02-27 06:32:25 +00:00
pnpinfo
portmap	K&Rify	2000-01-15 23:08:30 +00:00
ppp	Use libcrypto instead of libdes.	2000-02-24 21:10:28 +00:00
pppctl	NetBSD has changed the el_init() prototype	1999-09-20 07:22:22 +00:00
pppd	Use libcrypto instead of libdes.	2000-02-24 21:10:28 +00:00
pppstats
praliases
prefix	remove redundant ifdef's.	2000-01-07 10:02:43 +00:00
procctl	Cleanup manpage a bit.	2000-02-21 11:05:56 +00:00
pstat	Don't report TABLDISC - it "doesn't happen(TM)"	2000-01-29 16:45:28 +00:00
pw	Portability fixes for other bsd4.4 derivatives.	2000-01-15 00:20:22 +00:00
pwd_mkdb	Replace the -q option to pwd_mkdb with a test for PW_SCAN_BIG_IDS in	1999-12-02 16:39:15 +00:00
quot	Fix various man pages to stop abusing the .Bx macro to generate	2000-01-23 02:10:01 +00:00
quotaon
rarpd	Remove incorrect section name. Incomplete -Wall cleaning.	1999-11-27 17:06:40 +00:00
repquota	Description	1999-11-01 04:46:09 +00:00
rip6query	remove redundant ifdef's.	2000-01-07 10:02:43 +00:00
rmt	Minimum necessary change: return no more than 24 bytes of data for the	2000-02-12 01:14:33 +00:00
rndcontrol	Fix various man pages to stop abusing the .Bx macro to generate	2000-01-23 02:10:01 +00:00
route6d	remove redundant ifdef's.	2000-01-07 10:02:43 +00:00
rpc.lockd
rpc.statd	Undo previous change.	1999-10-05 14:40:38 +00:00
rpc.umntall	This is another in Martin Blapp's N-series of mount-related cleanups :)	2000-01-15 14:28:14 +00:00
rpc.yppasswdd	Revert the libcrypt/libmd stuff back to how it was. This should not have	1999-12-18 13:55:17 +00:00
rpc.ypupdated
rpc.ypxfrd
rrenumd	libipsec and IPsec related apps. (and some KAME related man pages)	2000-01-06 12:40:54 +00:00
rtadvd	Print ifname when sendmsg failed.	2000-02-24 18:46:51 +00:00
rtprio	Use DIAGNOSTICS instead of incorrect section name	1999-11-27 17:10:35 +00:00
rtsold	remove redundant ifdef's.	2000-01-07 10:02:43 +00:00
rwhod	Grammar fix: `Different than'' should really be `different from''.	2000-01-29 01:54:59 +00:00
sa	Grammar fix: `Different than'' should really be `different from''.	2000-01-29 01:54:59 +00:00
sade	Make all menu items more consistent and deal with a few remaining	2000-02-26 12:33:49 +00:00
sendmail	Since /etc/sendmail.cf got moved to /etc/mail/sendmail.cf, a 'make world'	1999-12-29 18:56:55 +00:00
setkey	Change IPv6 scoped addr format again based on recent standard discussion.	2000-02-19 16:10:16 +00:00
sgsc	Remove incorrect section name.	1999-11-27 17:13:08 +00:00
sicontrol	De-K&Rify sicontrol and tidy up a few loose ends. Remove "register".	2000-01-24 09:14:47 +00:00
sliplogin
slstat
spkrtest
spray
stallion	Fix warning: return type of main' is not int'	1999-09-15 01:58:44 +00:00
sysinstall	Be neater with the screen contents.	2000-02-26 12:43:01 +00:00
syslogd	Fix a serious bug in syslogd regarding the handling of pipes. The bug	2000-02-28 17:49:43 +00:00
tcpdchk	Missing tcp_wrapper IPv6 support seemed to be a bug, so commit it.	2000-02-03 10:27:03 +00:00
tcpdmatch
tcpdump	Merge tcpdump 3.5	2000-01-30 01:05:24 +00:00
timed
traceroute
traceroute6	Security fixes. (Just same as sbin/ping and usr.sbin/traceroute)	2000-02-24 19:06:05 +00:00
trpt	Sorry in this just befor code freeze commit.	2000-01-29 11:49:07 +00:00
tzsetup	Convert err() to errx(), reason is already provided. Complete the	2000-01-23 20:25:01 +00:00
usbd	Don't fail if less then MAXDEV /dev/usb\d+ entries exist.	2000-01-10 22:35:33 +00:00
usbdevs	Use releaseNo, not release. release is evil and should go away.	1999-11-23 01:16:10 +00:00
vidcontrol	updates the vidcontrol man page to include mention of the new -M flag	2000-02-17 03:00:38 +00:00
vipw	Replace the -q option to pwd_mkdb with a test for PW_SCAN_BIG_IDS in	1999-12-02 16:39:15 +00:00
vnconfig	Typo in example: 'vn0' should be 'vn1'	2000-02-17 02:54:36 +00:00
watch	Add missing .El.	2000-01-23 20:27:32 +00:00
wicontrol	Add support for WEP (encryption) for silver and gold WaveLAN/IEEE turbo cards.	2000-02-02 17:59:13 +00:00
wlconfig	Use .Xr for references.	2000-01-23 20:28:41 +00:00
wormcontrol	Add a FILES section.	2000-01-23 20:29:46 +00:00
xten
yp_mkdb	Remove invalid section name.	2000-01-23 20:32:24 +00:00
ypbind	Remove invalid section name.	2000-01-23 20:32:24 +00:00
yppoll
yppush	Remove invalid section name. Add missing .El.	2000-01-23 20:33:38 +00:00
ypserv	Fix various man pages to stop abusing the .Bx macro to generate	2000-01-23 02:10:01 +00:00
ypset
zic	Spelling. Add missing .El.	2000-01-23 20:36:27 +00:00
Makefile	IPv6 multicast routing.	2000-01-28 05:10:56 +00:00
Makefile.inc