Date: Mon, 22 Aug 2011 18:41:55 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r225081 - stable/7/sys/kern Message-ID: <201108221841.p7MIftLt063705@svn.freebsd.org>
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Author: jhb Date: Mon Aug 22 18:41:55 2011 New Revision: 225081 URL: http://svn.freebsd.org/changeset/base/225081 Log: MFC 224986: One of the general principles of the sysctl(3) API is that a user can query the needed size for a sysctl result by passing in a NULL old pointer and a valid oldsize. The kern.proc.args sysctl handler broke this assumption by not calling SYSCTL_OUT() if the old pointer was NULL. Modified: stable/7/sys/kern/kern_proc.c Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/kern/kern_proc.c ============================================================================== --- stable/7/sys/kern/kern_proc.c Mon Aug 22 18:41:39 2011 (r225080) +++ stable/7/sys/kern/kern_proc.c Mon Aug 22 18:41:55 2011 (r225081) @@ -1262,7 +1262,7 @@ sysctl_kern_proc_args(SYSCTL_HANDLER_ARG pa = p->p_args; pargs_hold(pa); PROC_UNLOCK(p); - if (req->oldptr != NULL && pa != NULL) + if (pa != NULL) error = SYSCTL_OUT(req, pa->ar_args, pa->ar_length); pargs_drop(pa); if (error != 0 || req->newptr == NULL)
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