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Diffstat (limited to 'modules/pam_limits/limits.conf.5')
| -rw-r--r-- | modules/pam_limits/limits.conf.5 | 259 |
1 files changed, 79 insertions, 180 deletions
diff --git a/modules/pam_limits/limits.conf.5 b/modules/pam_limits/limits.conf.5 index c6d39604..e25831ae 100644 --- a/modules/pam_limits/limits.conf.5 +++ b/modules/pam_limits/limits.conf.5 @@ -1,161 +1,22 @@ +'\" t .\" Title: limits.conf .\" Author: [see the "AUTHOR" section] -.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/> -.\" Date: 10/27/2010 +.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/> +.\" Date: 09/19/2013 .\" Manual: Linux-PAM Manual .\" Source: Linux-PAM Manual .\" Language: English .\" -.TH "LIMITS\&.CONF" "5" "10/27/2010" "Linux-PAM Manual" "Linux\-PAM Manual" +.TH "LIMITS\&.CONF" "5" "09/19/2013" "Linux-PAM Manual" "Linux\-PAM Manual" .\" ----------------------------------------------------------------- -.\" * (re)Define some macros +.\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -.\" toupper - uppercase a string (locale-aware) +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -.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 -.\} -.. +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- @@ -166,17 +27,23 @@ .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- -.SH "Name" +.SH "NAME" limits.conf \- configuration file for the pam_limits module .SH "DESCRIPTION" .PP +The +\fIpam_limits\&.so\fR +module applies ulimit limits, nice priority and number of simultaneous login sessions limit to user login sessions\&. This description of the configuration file syntax applies to the +/etc/security/limits\&.conf +file and +*\&.conf +files in the +/etc/security/limits\&.d +directory\&. +.PP The syntax of the lines is as follows: .PP - -\fI<domain>\fR -\fI<type>\fR -\fI<item>\fR -\fI<value>\fR +\fI<domain>\fR\fI<type>\fR\fI<item>\fR\fI<value>\fR .PP The fields listed above should be filled as follows: .PP @@ -229,8 +96,51 @@ the wildcard .\} the wildcard \fB%\fR, for maxlogins limit only, can also be used with -\fI%group\fR -syntax\&. +\fB%group\fR +syntax\&. If the +\fB%\fR +wildcard is used alone it is identical to using +\fB*\fR +with maxsyslogins limit\&. With a group specified after +\fB%\fR +it limits the total number of logins of all users that are member of the group\&. +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +an uid range specified as +\fI<min_uid>\fR\fB:\fR\fI<max_uid>\fR\&. If min_uid is omitted, the match is exact for the max_uid\&. If max_uid is omitted, all uids greater than or equal min_uid match\&. +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +a gid range specified as +\fB@\fR\fI<min_gid>\fR\fB:\fR\fI<max_gid>\fR\&. If min_gid is omitted, the match is exact for the max_gid\&. If max_gid is omitted, all gids greater than or equal min_gid match\&. For the exact match all groups including the user\*(Aqs supplementary groups are examined\&. For the range matches only the user\*(Aqs primary group is examined\&. +.RE +.sp +.RS 4 +.ie n \{\ +\h'-04'\(bu\h'+03'\c +.\} +.el \{\ +.sp -1 +.IP \(bu 2.3 +.\} +a gid specified as +\fB%:\fR\fI<gid>\fR +applicable to maxlogins limit only\&. It limits the total number of logins of all users that are member of the group with the specified gid\&. .RE .RE .PP @@ -263,7 +173,7 @@ 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\&. \&. +Note, if you specify a type of \*(Aq\-\*(Aq 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 @@ -328,7 +238,7 @@ maximum number of logins for this user except for this with .PP \fBmaxsyslogins\fR .RS 4 -maximum number of logins on system +maximum number of all logins on system .RE .PP \fBpriority\fR @@ -346,7 +256,7 @@ maximum locked files (Linux 2\&.4 and higher) maximum number of pending signals (Linux 2\&.6 and higher) .RE .PP -\fBmsqqueue\fR +\fBmsgqueue\fR .RS 4 maximum memory used by POSIX message queues (bytes) (Linux 2\&.6 and higher) .RE @@ -381,57 +291,46 @@ In general, individual limits have priority over group limits, so if you impose 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\&. One exception is the +\fImaxlogin\fR +option, this one is system wide\&. But there is a race, concurrent logins at the same time will not always be detect as such but only counted as one\&. .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 \*(Aq\fB#\fR\*(Aq 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[]\&. +/etc/security/limits\&.conf\&. .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 +* hard nofile 512 @student hard nproc 20 @faculty soft nproc 20 @faculty hard nproc 50 ftp hard nproc 0 @student \- maxlogins 4 +:123 hard cpu 5000 +@500: soft cpu 10000 +600:700 hard locks 10 -.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) +\fBgetrlimit\fR(2)\fBgetrlimit\fR(3p) .SH "AUTHOR" .PP pam_limits was initially written by Cristian Gafton <gafton@redhat\&.com> |