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Diffstat (limited to 'modules/pam_limits/limits.conf.5')
| -rw-r--r-- | modules/pam_limits/limits.conf.5 | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/modules/pam_limits/limits.conf.5 b/modules/pam_limits/limits.conf.5 new file mode 100644 index 00000000..0aba7137 --- /dev/null +++ b/modules/pam_limits/limits.conf.5 @@ -0,0 +1,219 @@ +.\" Title: limits.conf +.\" Author: +.\" Generator: DocBook XSL Stylesheets v1.73.1 <http://docbook.sf.net/> +.\" Date: 04/16/2008 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" +.TH "LIMITS\.CONF" "5" "04/16/2008" "Linux-PAM Manual" "Linux\-PAM Manual" +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.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 +\h'-04'\(bu\h'+03'a username +.RE +.sp +.RS 4 +\h'-04'\(bu\h'+03'a groupname, with +\fB@group\fR +syntax\. This should not be confused with netgroups\. +.RE +.sp +.RS 4 +\h'-04'\(bu\h'+03'the wildcard +\fB*\fR, for default entry\. +.RE +.sp +.RS 4 +\h'-04'\(bu\h'+03'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) +.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 +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 its best to report configuration problems found in its configuration file via +\fBsyslog\fR(3)\. +.SH "EXAMPLES" +.PP +These are some example lines which might be specified in +\fI/etc/security/limits\.conf\fR\. +.sp +.RS 4 +.nf +* 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 + +.fi +.RE +.SH "SEE ALSO" +.PP + +\fBpam_limits\fR(8), +\fBpam.d\fR(5), +\fBpam\fR(8) +.SH "AUTHOR" +.PP +pam_limits was initially written by Cristian Gafton <gafton@redhat\.com> |