Date: Mon, 27 Dec 2004 14:33:36 GMT From: Sergiy Vyshnevetskiy <serg@vostok.net> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/75541: Forgotten tunables for sysvmsg module Message-ID: <200412271433.iBREXaOR062537@www.freebsd.org> Resent-Message-ID: <200412271440.iBREeKKD062043@freefall.freebsd.org>
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>Number: 75541
>Category: kern
>Synopsis: Forgotten tunables for sysvmsg module
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Dec 27 14:40:20 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator: Sergiy Vyshnevetskiy
>Release: 5-stable
>Organization:
>Environment:
FreeBSD serg.vostok.net 5.3-STABLE FreeBSD 5.3-STABLE #0: Mon Dec 6 11:01:12 EET 2004 root@serg.vostok.net:/usr/5/src/sys/i386/compile/SERG i386
>Description:
If you load sysvmsg as a module, you can't change values of msgmnb and msgtql - no such tunables.
>How-To-Repeat:
Remove options SYSVMSG from the kernel configuration file, recompile the kernel, reboot, load sysvmsg module.
>Fix:
--- sys/kern/sysv_msg.c.orig Fri Dec 3 16:48:33 2004
+++ sys/kern/sysv_msg.c Fri Dec 3 17:04:58 2004
@@ -142,6 +142,8 @@
TUNABLE_INT_FETCH("kern.ipc.msgssz", &msginfo.msgssz);
msginfo.msgmax = msginfo.msgseg * msginfo.msgssz;
TUNABLE_INT_FETCH("kern.ipc.msgmni", &msginfo.msgmni);
+ TUNABLE_INT_FETCH("kern.ipc.msgmnb", &msginfo.msgmnb);
+ TUNABLE_INT_FETCH("kern.ipc.msgtql", &msginfo.msgtql);
msgpool = malloc(msginfo.msgmax, M_MSG, M_WAITOK);
if (msgpool == NULL)
@@ -1144,8 +1146,8 @@
SYSCTL_DECL(_kern_ipc);
SYSCTL_INT(_kern_ipc, OID_AUTO, msgmax, CTLFLAG_RD, &msginfo.msgmax, 0, "");
SYSCTL_INT(_kern_ipc, OID_AUTO, msgmni, CTLFLAG_RDTUN, &msginfo.msgmni, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, msgmnb, CTLFLAG_RD, &msginfo.msgmnb, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, msgtql, CTLFLAG_RD, &msginfo.msgtql, 0, "");
+SYSCTL_INT(_kern_ipc, OID_AUTO, msgmnb, CTLFLAG_RDTUN, &msginfo.msgmnb, 0, "");
+SYSCTL_INT(_kern_ipc, OID_AUTO, msgtql, CTLFLAG_RDTUN, &msginfo.msgtql, 0, "");
SYSCTL_INT(_kern_ipc, OID_AUTO, msgssz, CTLFLAG_RDTUN, &msginfo.msgssz, 0, "");
SYSCTL_INT(_kern_ipc, OID_AUTO, msgseg, CTLFLAG_RDTUN, &msginfo.msgseg, 0, "");
SYSCTL_PROC(_kern_ipc, OID_AUTO, msqids, CTLFLAG_RD,
>Release-Note:
>Audit-Trail:
>Unformatted:
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