For me it wasn't clear whether pam_limits uses the range used by user space [-20, 19] (tools like nice) or kernel [1, 40] (setrlimit). So here is a patch for the relevant docs for the valid values. We could also instead use a text like For valid values see man setpriority. Regards, Petteri
Index: modules/pam_limits/limits.conf
===================================================================
RCS file: /cvsroot/pam/Linux-PAM/modules/pam_limits/limits.conf,v
retrieving revision 1.2
diff -u -r1.2 limits.conf
--- modules/pam_limits/limits.conf 30 Apr 2007 11:25:09 -0000 1.2
+++ modules/pam_limits/limits.conf 2 Jan 2008 21:53:32 -0000
@@ -33,7 +33,7 @@
# - locks - max number of file locks the user can hold
# - sigpending - max number of pending signals
# - msgqueue - max memory used by POSIX message queues (bytes)
-# - nice - max nice priority allowed to raise to
+# - nice - max nice priority allowed to raise to values: [-20, 19]
# - rtprio - max realtime priority
#
#<domain> <type> <item> <value>
Index: modules/pam_limits/limits.conf.5
===================================================================
RCS file: /cvsroot/pam/Linux-PAM/modules/pam_limits/limits.conf.5,v
retrieving revision 1.5
diff -u -r1.5 limits.conf.5
--- modules/pam_limits/limits.conf.5 6 Nov 2007 14:58:54 -0000 1.5
+++ modules/pam_limits/limits.conf.5 2 Jan 2008 21:53:32 -0000
@@ -169,7 +169,7 @@
.PP
\fBnice\fR
.RS 4
-maximum nice priority allowed to raise to (Linux 2\.6\.12 and higher)
+maximum nice priority allowed to raise to (Linux 2\.6\.12 and higher) values: [-20,19]
.RE
.PP
\fBrtprio\fR
Index: modules/pam_limits/limits.conf.5.xml
===================================================================
RCS file: /cvsroot/pam/Linux-PAM/modules/pam_limits/limits.conf.5.xml,v
retrieving revision 1.5
diff -u -r1.5 limits.conf.5.xml
--- modules/pam_limits/limits.conf.5.xml 6 Nov 2007 14:58:54 -0000 1.5
+++ modules/pam_limits/limits.conf.5.xml 2 Jan 2008 21:53:33 -0000
@@ -214,7 +214,7 @@
<varlistentry>
<term><option>nice</option></term>
<listitem>
- <para>maximum nice priority allowed to raise to (Linux 2.6.12 and higher)</para>
+ <para>maximum nice priority allowed to raise to (Linux 2.6.12 and higher) values: [20,19]</para>
</listitem>
</varlistentry>
<varlistentry>
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