Date: Mon, 7 Oct 2019 15:26:40 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r353279 - releng/12.1/sys/kern Message-ID: <201910071526.x97FQeRc006884@repo.freebsd.org>
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Author: markj Date: Mon Oct 7 15:26:40 2019 New Revision: 353279 URL: https://svnweb.freebsd.org/changeset/base/353279 Log: MFS r353276: Disallow fcntl(F_READAHEAD) when the vnode is not a regular file. Approved by: re (gjb) Modified: releng/12.1/sys/kern/kern_descrip.c Directory Properties: releng/12.1/ (props changed) Modified: releng/12.1/sys/kern/kern_descrip.c ============================================================================== --- releng/12.1/sys/kern/kern_descrip.c Mon Oct 7 15:25:00 2019 (r353278) +++ releng/12.1/sys/kern/kern_descrip.c Mon Oct 7 15:26:40 2019 (r353279) @@ -770,6 +770,12 @@ kern_fcntl(struct thread *td, int fd, int cmd, intptr_ break; } vp = fp->f_vnode; + if (vp->v_type != VREG) { + fdrop(fp, td); + error = ENOTTY; + break; + } + /* * Exclusive lock synchronizes against f_seqcount reads and * writes in sequential_heuristic().
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