diff options
Diffstat (limited to 'modules/pam_limits')
| -rw-r--r-- | modules/pam_limits/.cvsignore | 9 | ||||
| -rw-r--r-- | modules/pam_limits/Makefile.in | 818 | ||||
| -rw-r--r-- | modules/pam_limits/README | 65 | ||||
| -rw-r--r-- | modules/pam_limits/limits.conf.5 | 437 | ||||
| -rw-r--r-- | modules/pam_limits/pam_limits.8 | 308 |
5 files changed, 1628 insertions, 9 deletions
diff --git a/modules/pam_limits/.cvsignore b/modules/pam_limits/.cvsignore deleted file mode 100644 index b2519a1c..00000000 --- a/modules/pam_limits/.cvsignore +++ /dev/null @@ -1,9 +0,0 @@ -*.la -*.lo -.deps -.libs -Makefile -Makefile.in -README -limits.conf.5 -pam_limits.8 diff --git a/modules/pam_limits/Makefile.in b/modules/pam_limits/Makefile.in new file mode 100644 index 00000000..eeba825f --- /dev/null +++ b/modules/pam_limits/Makefile.in @@ -0,0 +1,818 @@ +# Makefile.in generated by automake 1.11 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to 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+# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/modules/pam_limits/README b/modules/pam_limits/README new file mode 100644 index 00000000..5dff40ba --- /dev/null +++ b/modules/pam_limits/README @@ -0,0 +1,65 @@ +pam_limits — PAM module to limit resources + +━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ + +DESCRIPTION + +The pam_limits PAM module sets limits on the system resources that can be +obtained in a user-session. Users of uid=0 are affected by this limits, too. + +By default limits are taken from the /etc/security/limits.conf config file. +Then individual *.conf files from the /etc/security/limits.d/ directory are +read. The files are parsed one after another in the order of "C" locale. The +effect of the individual files is the same as if all the files were +concatenated together in the order of parsing. If a config file is explicitly +specified with a module option then the files in the above directory are not +parsed. + +The module must not be called by a multithreaded application. + +If Linux PAM is compiled with audit support the module will report when it +denies access based on limit of maximum number of concurrent login sessions. + +OPTIONS + +change_uid + + Change real uid to the user for who the limits are set up. Use this option + if you have problems like login not forking a shell for user who has no + processes. Be warned that something else may break when you do this. + +conf=/path/to/limits.conf + + Indicate an alternative limits.conf style configuration file to override + the default. + +debug + + Print debug information. + +utmp_early + + Some broken applications actually allocate a utmp entry for the user before + the user is admitted to the system. If some of the services you are + configuring PAM for do this, you can selectively use this module argument + to compensate for this behavior and at the same time maintain system-wide + consistency with a single limits.conf file. + +noaudit + + Do not report exceeded maximum logins count to the audit subsystem. + +EXAMPLES + +These are some example lines which might be specified in /etc/security/ +limits.conf. + +* soft core 0 +* hard rss 10000 +@student hard nproc 20 +@faculty soft nproc 20 +@faculty hard nproc 50 +ftp hard nproc 0 +@student - maxlogins 4 + + diff --git a/modules/pam_limits/limits.conf.5 b/modules/pam_limits/limits.conf.5 new file mode 100644 index 00000000..ce374d36 --- /dev/null +++ b/modules/pam_limits/limits.conf.5 @@ -0,0 +1,437 @@ +.\" Title: limits.conf +.\" Author: [see the "AUTHOR" section] +.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/> +.\" Date: 03/02/2009 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" Language: English +.\" +.TH "LIMITS\&.CONF" "5" "03/02/2009" "Linux-PAM Manual" "Linux\-PAM Manual" +.\" ----------------------------------------------------------------- +.\" * (re)Define some macros +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" toupper - uppercase a string (locale-aware) +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de toupper +.tr aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ +\\$* +.tr aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH-xref - format a cross-reference to an SH section +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de SH-xref +.ie n \{\ +.\} +.toupper \\$* +.el \{\ +\\$* +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH - level-one heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SH +.\" put an extra blank line of space above the head in non-TTY output +.if t \{\ +.sp 1 +.\} +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[an-margin]u +.ti 0 +.HTML-TAG ".NH \\n[an-level]" +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +\." make the size of the head bigger +.ps +3 +.ft B +.ne (2v + 1u) +.ie n \{\ +.\" if n (TTY output), use uppercase +.toupper \\$* +.\} +.el \{\ +.nr an-break-flag 0 +.\" if not n (not TTY), use normal case (not uppercase) +\\$1 +.in \\n[an-margin]u +.ti 0 +.\" if not n (not TTY), put a border/line under subheading +.sp -.6 +\l'\n(.lu' +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SS - level-two heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SS +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[IN]u +.ti \\n[SN]u +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.ps \\n[PS-SS]u +\." make the size of the head bigger +.ps +2 +.ft B +.ne (2v + 1u) +.if \\n[.$] \&\\$* +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BB/BE - put background/screen (filled box) around block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BB +.if t \{\ +.sp -.5 +.br +.in +2n +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EB +.if t \{\ +.if "\\$2"adjust-for-leading-newline" \{\ +.sp -1 +.\} +.br +.di +.in +.ll +.gcolor +.nr BW \\n(.lu-\\n(.i +.nr BH \\n(dn+.5v +.ne \\n(BHu+.5v +.ie "\\$2"adjust-for-leading-newline" \{\ +\M[\\$1]\h'1n'\v'+.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.el \{\ +\M[\\$1]\h'1n'\v'-.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.in 0 +.sp -.5v +.nf +.BX +.in +.sp .5v +.fi +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BM/EM - put colored marker in margin next to block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BM +.if t \{\ +.br +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EM +.if t \{\ +.br +.di +.ll +.gcolor +.nr BH \\n(dn +.ne \\n(BHu +\M[\\$1]\D'P -.75n 0 0 \\n(BHu -(\\n[.i]u - \\n(INu - .75n) 0 0 -\\n(BHu'\M[] +.in 0 +.nf +.BX +.in +.fi +.\} +.. +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "Name" +limits.conf \- configuration file for the pam_limits module +.SH "DESCRIPTION" +.PP +The syntax of the lines is as follows: +.PP + +\fI<domain>\fR +\fI<type>\fR +\fI<item>\fR +\fI<value>\fR +.PP +The fields listed above should be filled as follows: +.PP +\fB<domain>\fR +.RS 4 +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +a username +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +a groupname, with +\fB@group\fR +syntax\&. This should not be confused with netgroups\&. +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +the wildcard +\fB*\fR, for default entry\&. +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +the wildcard +\fB%\fR, for maxlogins limit only, can also be used with +\fI%group\fR +syntax\&. +.RE +.RE +.PP +\fB<type>\fR +.RS 4 +.PP +\fBhard\fR +.RS 4 +for enforcing +\fBhard\fR +resource limits\&. These limits are set by the superuser and enforced by the Kernel\&. The user cannot raise his requirement of system resources above such values\&. +.RE +.PP +\fBsoft\fR +.RS 4 +for enforcing +\fBsoft\fR +resource limits\&. These limits are ones that the user can move up or down within the permitted range by any pre\-existing +\fBhard\fR +limits\&. The values specified with this token can be thought of as +\fIdefault\fR +values, for normal system usage\&. +.RE +.PP +\fB\-\fR +.RS 4 +for enforcing both +\fBsoft\fR +and +\fBhard\fR +resource limits together\&. +.sp +Note, if you specify a type of \'\-\' but neglect to supply the item and value fields then the module will never enforce any limits on the specified user/group etc\&. \&. +.RE +.RE +.PP +\fB<item>\fR +.RS 4 +.PP +\fBcore\fR +.RS 4 +limits the core file size (KB) +.RE +.PP +\fBdata\fR +.RS 4 +maximum data size (KB) +.RE +.PP +\fBfsize\fR +.RS 4 +maximum filesize (KB) +.RE +.PP +\fBmemlock\fR +.RS 4 +maximum locked\-in\-memory address space (KB) +.RE +.PP +\fBnofile\fR +.RS 4 +maximum number of open files +.RE +.PP +\fBrss\fR +.RS 4 +maximum resident set size (KB) (Ignored in Linux 2\&.4\&.30 and higher) +.RE +.PP +\fBstack\fR +.RS 4 +maximum stack size (KB) +.RE +.PP +\fBcpu\fR +.RS 4 +maximum CPU time (minutes) +.RE +.PP +\fBnproc\fR +.RS 4 +maximum number of processes +.RE +.PP +\fBas\fR +.RS 4 +address space limit (KB) +.RE +.PP +\fBmaxlogins\fR +.RS 4 +maximum number of logins for this user except for this with +\fIuid=0\fR +.RE +.PP +\fBmaxsyslogins\fR +.RS 4 +maximum number of logins on system +.RE +.PP +\fBpriority\fR +.RS 4 +the priority to run user process with (negative values boost process priority) +.RE +.PP +\fBlocks\fR +.RS 4 +maximum locked files (Linux 2\&.4 and higher) +.RE +.PP +\fBsigpending\fR +.RS 4 +maximum number of pending signals (Linux 2\&.6 and higher) +.RE +.PP +\fBmsqqueue\fR +.RS 4 +maximum memory used by POSIX message queues (bytes) (Linux 2\&.6 and higher) +.RE +.PP +\fBnice\fR +.RS 4 +maximum nice priority allowed to raise to (Linux 2\&.6\&.12 and higher) values: [\-20,19] +.RE +.PP +\fBrtprio\fR +.RS 4 +maximum realtime priority allowed for non\-privileged processes (Linux 2\&.6\&.12 and higher) +.RE +.RE +.PP +All items support the values +\fI\-1\fR, +\fIunlimited\fR +or +\fIinfinity\fR +indicating no limit, except for +\fBpriority\fR +and +\fBnice\fR\&. +.PP +If a hard limit or soft limit of a resource is set to a valid value, but outside of the supported range of the local system, the system may reject the new limit or unexpected behavior may occur\&. If the control value +\fIrequired\fR +is used, the module will reject the login if a limit could not be set\&. +.PP +In general, individual limits have priority over group limits, so if you impose no limits for +\fIadmin\fR +group, but one of the members in this group have a limits line, the user will have its limits set according to this line\&. +.PP +Also, please note that all limit settings are set +\fIper login\fR\&. They are not global, nor are they permanent; existing only for the duration of the session\&. +.PP +In the +\fIlimits\fR +configuration file, the \'\fB#\fR\' character introduces a comment \- after which the rest of the line is ignored\&. +.PP +The pam_limits module does report configuration problems found in its configuration file and errors via +\fBsyslog\fR(3)\&. +.SH "EXAMPLES" +.PP +These are some example lines which might be specified in +\FC/etc/security/limits\&.conf\F[]\&. +.sp +.if n \{\ +.RS 4 +.\} +.fam C +.ps -1 +.nf +.if t \{\ +.sp -1 +.\} +.BB lightgray adjust-for-leading-newline +.sp -1 + +* soft core 0 +* hard rss 10000 +@student hard nproc 20 +@faculty soft nproc 20 +@faculty hard nproc 50 +ftp hard nproc 0 +@student \- maxlogins 4 + +.EB lightgray adjust-for-leading-newline +.if t \{\ +.sp 1 +.\} +.fi +.fam +.ps +1 +.if n \{\ +.RE +.\} +.SH "SEE ALSO" +.PP + +\fBpam_limits\fR(8), +\fBpam.d\fR(5), +\fBpam\fR(8), +\fBgetrlimit\fR(2) +\fBgetrlimit\fR(3p) +.SH "AUTHOR" +.PP +pam_limits was initially written by Cristian Gafton <gafton@redhat\&.com> diff --git a/modules/pam_limits/pam_limits.8 b/modules/pam_limits/pam_limits.8 new file mode 100644 index 00000000..d671fb6c --- /dev/null +++ b/modules/pam_limits/pam_limits.8 @@ -0,0 +1,308 @@ +.\" Title: pam_limits +.\" Author: [see the "AUTHORS" section] +.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/> +.\" Date: 06/16/2009 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" Language: English +.\" +.TH "PAM_LIMITS" "8" "06/16/2009" "Linux-PAM Manual" "Linux-PAM Manual" +.\" ----------------------------------------------------------------- +.\" * (re)Define some macros +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" toupper - uppercase a string (locale-aware) +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de toupper +.tr aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ +\\$* +.tr aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH-xref - format a cross-reference to an SH section +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de SH-xref +.ie n \{\ +.\} +.toupper \\$* +.el \{\ +\\$* +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SH - level-one heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SH +.\" put an extra blank line of space above the head in non-TTY output +.if t \{\ +.sp 1 +.\} +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[an-margin]u +.ti 0 +.HTML-TAG ".NH \\n[an-level]" +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +\." make the size of the head bigger +.ps +3 +.ft B +.ne (2v + 1u) +.ie n \{\ +.\" if n (TTY output), use uppercase +.toupper \\$* +.\} +.el \{\ +.nr an-break-flag 0 +.\" if not n (not TTY), use normal case (not uppercase) +\\$1 +.in \\n[an-margin]u +.ti 0 +.\" if not n (not TTY), put a border/line under subheading +.sp -.6 +\l'\n(.lu' +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" SS - level-two heading that works better for non-TTY output +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de1 SS +.sp \\n[PD]u +.nr an-level 1 +.set-an-margin +.nr an-prevailing-indent \\n[IN] +.fi +.in \\n[IN]u +.ti \\n[SN]u +.it 1 an-trap +.nr an-no-space-flag 1 +.nr an-break-flag 1 +.ps \\n[PS-SS]u +\." make the size of the head bigger +.ps +2 +.ft B +.ne (2v + 1u) +.if \\n[.$] \&\\$* +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BB/BE - put background/screen (filled box) around block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BB +.if t \{\ +.sp -.5 +.br +.in +2n +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EB +.if t \{\ +.if "\\$2"adjust-for-leading-newline" \{\ +.sp -1 +.\} +.br +.di +.in +.ll +.gcolor +.nr BW \\n(.lu-\\n(.i +.nr BH \\n(dn+.5v +.ne \\n(BHu+.5v +.ie "\\$2"adjust-for-leading-newline" \{\ +\M[\\$1]\h'1n'\v'+.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.el \{\ +\M[\\$1]\h'1n'\v'-.5v'\D'P \\n(BWu 0 0 \\n(BHu -\\n(BWu 0 0 -\\n(BHu'\M[] +.\} +.in 0 +.sp -.5v +.nf +.BX +.in +.sp .5v +.fi +.\} +.. +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" BM/EM - put colored marker in margin next to block of text +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.de BM +.if t \{\ +.br +.ll -2n +.gcolor red +.di BX +.\} +.. +.de EM +.if t \{\ +.br +.di +.ll +.gcolor +.nr BH \\n(dn +.ne \\n(BHu +\M[\\$1]\D'P -.75n 0 0 \\n(BHu -(\\n[.i]u - \\n(INu - .75n) 0 0 -\\n(BHu'\M[] +.in 0 +.nf +.BX +.in +.fi +.\} +.. +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "Name" +pam_limits \- PAM module to limit resources +.SH "Synopsis" +.fam C +.HP \w'\fBpam_limits\&.so\fR\ 'u +\fBpam_limits\&.so\fR [change_uid] [conf=\fI/path/to/limits\&.conf\fR] [debug] [utmp_early] [noaudit] +.fam +.SH "DESCRIPTION" +.PP +The pam_limits PAM module sets limits on the system resources that can be obtained in a user\-session\&. Users of +\fIuid=0\fR +are affected by this limits, too\&. +.PP +By default limits are taken from the +\FC/etc/security/limits\&.conf\F[] +config file\&. Then individual *\&.conf files from the +\FC/etc/security/limits\&.d/\F[] +directory are read\&. The files are parsed one after another in the order of "C" locale\&. The effect of the individual files is the same as if all the files were concatenated together in the order of parsing\&. If a config file is explicitly specified with a module option then the files in the above directory are not parsed\&. +.PP +The module must not be called by a multithreaded application\&. +.PP +If Linux PAM is compiled with audit support the module will report when it denies access based on limit of maximum number of concurrent login sessions\&. +.SH "OPTIONS" +.PP +\fBchange_uid\fR +.RS 4 +Change real uid to the user for who the limits are set up\&. Use this option if you have problems like login not forking a shell for user who has no processes\&. Be warned that something else may break when you do this\&. +.RE +.PP +\fBconf=\fR\fB\fI/path/to/limits\&.conf\fR\fR +.RS 4 +Indicate an alternative limits\&.conf style configuration file to override the default\&. +.RE +.PP +\fBdebug\fR +.RS 4 +Print debug information\&. +.RE +.PP +\fButmp_early\fR +.RS 4 +Some broken applications actually allocate a utmp entry for the user before the user is admitted to the system\&. If some of the services you are configuring PAM for do this, you can selectively use this module argument to compensate for this behavior and at the same time maintain system\-wide consistency with a single limits\&.conf file\&. +.RE +.PP +\fBnoaudit\fR +.RS 4 +Do not report exceeded maximum logins count to the audit subsystem\&. +.RE +.SH "MODULE TYPES PROVIDED" +.PP +Only the +\fBsession\fR +module type is provided\&. +.SH "RETURN VALUES" +.PP +PAM_ABORT +.RS 4 +Cannot get current limits\&. +.RE +.PP +PAM_IGNORE +.RS 4 +No limits found for this user\&. +.RE +.PP +PAM_PERM_DENIED +.RS 4 +New limits could not be set\&. +.RE +.PP +PAM_SERVICE_ERR +.RS 4 +Cannot read config file\&. +.RE +.PP +PAM_SESSION_ERR +.RS 4 +Error recovering account name\&. +.RE +.PP +PAM_SUCCESS +.RS 4 +Limits were changed\&. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +The user is not known to the system\&. +.RE +.SH "FILES" +.PP +\FC/etc/security/limits\&.conf\F[] +.RS 4 +Default configuration file +.RE +.SH "EXAMPLES" +.PP +For the services you need resources limits (login for example) put a the following line in +\FC/etc/pam\&.d/login\F[] +as the last line for that service (usually after the pam_unix session line): +.sp +.if n \{\ +.RS 4 +.\} +.fam C +.ps -1 +.nf +.if t \{\ +.sp -1 +.\} +.BB lightgray adjust-for-leading-newline +.sp -1 + +#%PAM\-1\&.0 +# +# Resource limits imposed on login sessions via pam_limits +# +session required pam_limits\&.so + +.EB lightgray adjust-for-leading-newline +.if t \{\ +.sp 1 +.\} +.fi +.fam +.ps +1 +.if n \{\ +.RE +.\} +.PP +Replace "login" for each service you are using this module\&. +.SH "SEE ALSO" +.PP + +\fBlimits.conf\fR(5), +\fBpam.d\fR(5), +\fBpam\fR(8)\&. +.SH "AUTHORS" +.PP +pam_limits was initially written by Cristian Gafton <gafton@redhat\&.com> |