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Diffstat (limited to 'modules/pam_limits/pam_limits.8')
| -rw-r--r-- | modules/pam_limits/pam_limits.8 | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/modules/pam_limits/pam_limits.8 b/modules/pam_limits/pam_limits.8 new file mode 100644 index 00000000..5a52428d --- /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: 10/27/2010 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" Language: English +.\" +.TH "PAM_LIMITS" "8" "10/27/2010" "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> |