diff options
Diffstat (limited to 'modules/pam_limits/limits.conf.5')
| -rw-r--r-- | modules/pam_limits/limits.conf.5 | 284 |
1 files changed, 251 insertions, 33 deletions
diff --git a/modules/pam_limits/limits.conf.5 b/modules/pam_limits/limits.conf.5 index 0aba7137..ce374d36 100644 --- a/modules/pam_limits/limits.conf.5 +++ b/modules/pam_limits/limits.conf.5 @@ -1,17 +1,173 @@ .\" Title: limits.conf -.\" Author: -.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> -.\" Date: 04/16/2008 +.\" 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" "04/16/2008" "Linux-PAM Manual" "Linux\-PAM Manual" +.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 -.SH "NAME" -limits.conf - configuration file for the pam_limits module +.\" ----------------------------------------------------------------- +.\" * 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: @@ -28,25 +184,53 @@ The fields listed above should be filled as follows: .RS 4 .sp .RS 4 -\h'-04'\(bu\h'+03'a username +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +a username .RE .sp .RS 4 -\h'-04'\(bu\h'+03'a groupname, with +.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\. +syntax\&. This should not be confused with netgroups\&. .RE .sp .RS 4 -\h'-04'\(bu\h'+03'the wildcard -\fB*\fR, for default entry\. +.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 -\h'-04'\(bu\h'+03'the wildcard +.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\. +syntax\&. .RE .RE .PP @@ -57,18 +241,18 @@ syntax\. .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\. +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 +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 +limits\&. The values specified with this token can be thought of as \fIdefault\fR -values, for normal system usage\. +values, for normal system usage\&. .RE .PP \fB\-\fR @@ -77,9 +261,9 @@ for enforcing both \fBsoft\fR and \fBhard\fR -resource limits together\. +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\. \. +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 @@ -113,7 +297,7 @@ maximum number of open files .PP \fBrss\fR .RS 4 -maximum resident set size (KB) +maximum resident set size (KB) (Ignored in Linux 2\&.4\&.30 and higher) .RE .PP \fBstack\fR @@ -154,50 +338,74 @@ the priority to run user process with (negative values boost process priority) .PP \fBlocks\fR .RS 4 -maximum locked files (Linux 2\.4 and higher) +maximum locked files (Linux 2\&.4 and higher) .RE .PP \fBsigpending\fR .RS 4 -maximum number of pending signals (Linux 2\.6 and higher) +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) +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] +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) +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\. +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\. +\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\. +configuration file, the \'\fB#\fR\' character introduces a comment \- after which the rest of the line is ignored\&. .PP -The pam_limits module does its best to report configuration problems found in its configuration file via -\fBsyslog\fR(3)\. +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 -\fI/etc/security/limits\.conf\fR\. +\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 @@ -206,14 +414,24 @@ These are some example lines which might be specified in 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) +\fBpam\fR(8), +\fBgetrlimit\fR(2) +\fBgetrlimit\fR(3p) .SH "AUTHOR" .PP -pam_limits was initially written by Cristian Gafton <gafton@redhat\.com> +pam_limits was initially written by Cristian Gafton <gafton@redhat\&.com> |