user. Kqueue now saves the ucred of the allocating thread, to correctly decrement the counter on close. Under some specific and not real-world use scenario for kqueue, it is possible for the kqueues to consume memory proportional to the square of the number of the filedescriptors available to the process. Limit allows administrator to prevent the abuse. This is kernel-mode side of the change, with the user-mode enabling commit following. Reported and tested by: pho Discussed with: jmg Sponsored by: The FreeBSD Foundation MFC after: 2 weeks
322 lines
6.6 KiB
Plaintext
322 lines
6.6 KiB
Plaintext
# login.conf - login class capabilities database.
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#
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# Remember to rebuild the database after each change to this file:
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#
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# cap_mkdb /etc/login.conf
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#
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# This file controls resource limits, accounting limits and
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# default user environment settings.
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#
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# $FreeBSD$
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#
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# Default settings effectively disable resource limits, see the
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# examples below for a starting point to enable them.
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# defaults
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# These settings are used by login(1) by default for classless users
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# Note that entries like "cputime" set both "cputime-cur" and "cputime-max"
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#
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# Note that since a colon ':' is used to separate capability entries,
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# a \c escape sequence must be used to embed a literal colon in the
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# value or name of a capability (see the ``CGETNUM AND CGETSTR SYNTAX
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# AND SEMANTICS'' section of getcap(3) for more escape sequences).
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default:\
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:passwd_format=sha512:\
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:copyright=/etc/COPYRIGHT:\
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:welcome=/etc/motd:\
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:setenv=MAIL=/var/mail/$,BLOCKSIZE=K:\
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:path=/sbin /bin /usr/sbin /usr/bin /usr/games /usr/local/sbin /usr/local/bin ~/bin:\
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:nologin=/var/run/nologin:\
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:cputime=unlimited:\
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:datasize=unlimited:\
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:stacksize=unlimited:\
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:memorylocked=64K:\
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:memoryuse=unlimited:\
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:filesize=unlimited:\
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:coredumpsize=unlimited:\
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:openfiles=unlimited:\
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:maxproc=unlimited:\
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:sbsize=unlimited:\
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:vmemoryuse=unlimited:\
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:swapuse=unlimited:\
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:pseudoterminals=unlimited:\
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:kqueues=unlimited:\
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:priority=0:\
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:ignoretime@:\
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:umask=022:
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#
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# A collection of common class names - forward them all to 'default'
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# (login would normally do this anyway, but having a class name
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# here suppresses the diagnostic)
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#
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standard:\
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:tc=default:
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xuser:\
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:tc=default:
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staff:\
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:tc=default:
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daemon:\
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:memorylocked=128M:\
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:tc=default:
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news:\
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:tc=default:
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dialer:\
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:tc=default:
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#
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# Root can always login
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#
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# N.B. login_getpwclass(3) will use this entry for the root account,
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# in preference to 'default'.
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root:\
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:ignorenologin:\
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:memorylocked=unlimited:\
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:tc=default:
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#
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# Russian Users Accounts. Setup proper environment variables.
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#
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russian|Russian Users Accounts:\
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:charset=KOI8-R:\
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:lang=ru_RU.KOI8-R:\
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:tc=default:
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######################################################################
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######################################################################
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##
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## Example entries
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##
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######################################################################
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######################################################################
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## Example defaults
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## These settings are used by login(1) by default for classless users
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## Note that entries like "cputime" set both "cputime-cur" and "cputime-max"
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#
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#default:\
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# :cputime=infinity:\
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# :datasize-cur=22M:\
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# :stacksize-cur=8M:\
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# :memorylocked-cur=10M:\
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# :memoryuse-cur=30M:\
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# :filesize=infinity:\
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# :coredumpsize=infinity:\
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# :maxproc-cur=64:\
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# :openfiles-cur=64:\
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# :priority=0:\
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# :requirehome@:\
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# :umask=022:\
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# :tc=auth-defaults:
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#
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#
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##
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## standard - standard user defaults
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##
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#standard:\
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# :copyright=/etc/COPYRIGHT:\
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# :welcome=/etc/motd:\
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# :setenv=MAIL=/var/mail/$,BLOCKSIZE=K:\
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# :path=~/bin /bin /usr/bin /usr/local/bin:\
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# :manpath=/usr/share/man /usr/local/man:\
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# :nologin=/var/run/nologin:\
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# :cputime=1h30m:\
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# :datasize=8M:\
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# :vmemoryuse=100M:\
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# :stacksize=2M:\
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# :memorylocked=4M:\
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# :memoryuse=8M:\
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# :filesize=8M:\
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# :coredumpsize=8M:\
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# :openfiles=24:\
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# :maxproc=32:\
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# :priority=0:\
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# :requirehome:\
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# :passwordtime=90d:\
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# :umask=002:\
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# :ignoretime@:\
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# :tc=default:
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#
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#
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##
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## users of X (needs more resources!)
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##
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#xuser:\
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# :manpath=/usr/share/man /usr/local/man:\
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# :cputime=4h:\
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# :datasize=12M:\
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# :vmemoryuse=infinity:\
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# :stacksize=4M:\
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# :filesize=8M:\
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# :memoryuse=16M:\
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# :openfiles=32:\
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# :maxproc=48:\
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# :tc=standard:
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#
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#
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##
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## Staff users - few restrictions and allow login anytime
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##
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#staff:\
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# :ignorenologin:\
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# :ignoretime:\
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# :requirehome@:\
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# :accounted@:\
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# :path=~/bin /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin:\
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# :umask=022:\
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# :tc=standard:
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#
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#
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##
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## root - fallback for root logins
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##
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#root:\
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# :path=~/bin /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin:\
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# :cputime=infinity:\
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# :datasize=infinity:\
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# :stacksize=infinity:\
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# :memorylocked=infinity:\
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# :memoryuse=infinity:\
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# :filesize=infinity:\
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# :coredumpsize=infinity:\
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# :openfiles=infinity:\
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# :maxproc=infinity:\
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# :memoryuse-cur=32M:\
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# :maxproc-cur=64:\
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# :openfiles-cur=1024:\
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# :priority=0:\
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# :requirehome@:\
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# :umask=022:\
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# :tc=auth-root-defaults:
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#
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#
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##
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## Settings used by /etc/rc
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##
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#daemon:\
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# :coredumpsize@:\
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# :coredumpsize-cur=0:\
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# :datasize=infinity:\
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# :datasize-cur@:\
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# :maxproc=512:\
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# :maxproc-cur@:\
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# :memoryuse-cur=64M:\
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# :memorylocked-cur=64M:\
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# :openfiles=1024:\
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# :openfiles-cur@:\
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# :stacksize=16M:\
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# :stacksize-cur@:\
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# :tc=default:
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#
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#
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##
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## Settings used by news subsystem
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##
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#news:\
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# :path=/usr/local/news/bin /bin /sbin /usr/bin /usr/sbin /usr/local/bin /usr/local/sbin:\
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# :cputime=infinity:\
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# :filesize=128M:\
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# :datasize-cur=64M:\
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# :stacksize-cur=32M:\
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# :coredumpsize-cur=0:\
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# :maxmemorysize-cur=128M:\
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# :memorylocked=32M:\
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# :maxproc=128:\
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# :openfiles=256:\
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# :tc=default:
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#
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#
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##
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## The dialer class should be used for a dialup PPP account
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## Welcome messages/news suppressed
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##
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#dialer:\
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# :hushlogin:\
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# :requirehome@:\
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# :cputime=unlimited:\
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# :filesize=2M:\
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# :datasize=2M:\
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# :stacksize=4M:\
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# :coredumpsize=0:\
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# :memoryuse=4M:\
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# :memorylocked=1M:\
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# :maxproc=16:\
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# :openfiles=32:\
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# :tc=standard:
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#
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#
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##
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## Site full-time 24/7 PPP connection
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## - no time accounting, restricted to access via dialin lines
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##
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#site:\
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# :ignoretime:\
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# :passwordtime@:\
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# :refreshtime@:\
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# :refreshperiod@:\
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# :sessionlimit@:\
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# :autodelete@:\
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# :expireperiod@:\
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# :graceexpire@:\
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# :gracetime@:\
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# :warnexpire@:\
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# :warnpassword@:\
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# :idletime@:\
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# :sessiontime@:\
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# :daytime@:\
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# :weektime@:\
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# :monthtime@:\
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# :warntime@:\
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# :accounted@:\
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# :tc=dialer:\
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# :tc=staff:
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#
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#
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##
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## Example standard accounting entries for subscriber levels
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##
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#
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#subscriber|Subscribers:\
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# :accounted:\
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# :refreshtime=180d:\
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# :refreshperiod@:\
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# :sessionlimit@:\
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# :autodelete=30d:\
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# :expireperiod=180d:\
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# :graceexpire=7d:\
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# :gracetime=10m:\
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# :warnexpire=7d:\
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# :warnpassword=7d:\
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# :idletime=30m:\
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# :sessiontime=4h:\
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# :daytime=6h:\
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# :weektime=40h:\
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# :monthtime=120h:\
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# :warntime=4h:\
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# :tc=standard:
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#
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#
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##
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## Subscriber accounts. These accounts have their login times
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## accounted and have access limits applied.
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##
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#subppp|PPP Subscriber Accounts:\
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# :tc=dialer:\
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# :tc=subscriber:
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#
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#
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#subshell|Shell Subscriber Accounts:\
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# :tc=subscriber:
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#
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##
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## If you want some of the accounts to use traditional UNIX DES based
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## password hashes.
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##
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#des_users:\
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# :passwd_format=des:\
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# :tc=default:
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