From owner-svn-src-all@freebsd.org Sun Oct 25 22:17:45 2015 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0C7808DBD; Sun, 25 Oct 2015 22:17:45 +0000 (UTC) (envelope-from ngie@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BEFFC1875; Sun, 25 Oct 2015 22:17:44 +0000 (UTC) (envelope-from ngie@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id t9PMHhM4011284; Sun, 25 Oct 2015 22:17:43 GMT (envelope-from ngie@FreeBSD.org) Received: (from ngie@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id t9PMHhI5011283; Sun, 25 Oct 2015 22:17:43 GMT (envelope-from ngie@FreeBSD.org) Message-Id: <201510252217.t9PMHhI5011283@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ngie set sender to ngie@FreeBSD.org using -f From: Garrett Cooper Date: Sun, 25 Oct 2015 22:17:43 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r289949 - stable/10/usr.sbin/syslogd X-SVN-Group: stable-10 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 25 Oct 2015 22:17:45 -0000 Author: ngie Date: Sun Oct 25 22:17:43 2015 New Revision: 289949 URL: https://svnweb.freebsd.org/changeset/base/289949 Log: MFC r286304: Set f_file to -1/F_UNUSED when after closing when possible This will help ensure we don't trash file descriptors that get used later on in the daemon Found via internal Coverity scan Discussed with: cem, ed, markj Differential Revision: https://reviews.freebsd.org/D3081 Submitted by: Miles Ohlrich Sponsored by: EMC / Isilon Storage Division Modified: stable/10/usr.sbin/syslogd/syslogd.c Directory Properties: stable/10/ (props changed) Modified: stable/10/usr.sbin/syslogd/syslogd.c ============================================================================== --- stable/10/usr.sbin/syslogd/syslogd.c Sun Oct 25 22:17:10 2015 (r289948) +++ stable/10/usr.sbin/syslogd/syslogd.c Sun Oct 25 22:17:43 2015 (r289949) @@ -339,6 +339,18 @@ static int waitdaemon(int, int, int); static void timedout(int); static void increase_rcvbuf(int); +static void +close_filed(struct filed *f) +{ + + if (f == NULL || f->f_file == -1) + return; + + (void)close(f->f_file); + f->f_file = -1; + f->f_type = F_UNUSED; +} + int main(int argc, char *argv[]) { @@ -986,7 +998,8 @@ logmsg(int pri, const char *msg, const c (void)strlcpy(f->f_lasttime, timestamp, sizeof(f->f_lasttime)); fprintlog(f, flags, msg); - (void)close(f->f_file); + close(f->f_file); + f->f_file = -1; } (void)sigsetmask(omask); return; @@ -1275,8 +1288,7 @@ fprintlog(struct filed *f, int flags, co */ if (errno != ENOSPC) { int e = errno; - (void)close(f->f_file); - f->f_type = F_UNUSED; + close_filed(f); errno = e; logerror(f->f_un.f_fname); } @@ -1300,7 +1312,7 @@ fprintlog(struct filed *f, int flags, co } if (writev(f->f_file, iov, IOV_SIZE) < 0) { int e = errno; - (void)close(f->f_file); + close_filed(f); if (f->f_un.f_pipe.f_pid > 0) deadq_enter(f->f_un.f_pipe.f_pid, f->f_un.f_pipe.f_pname); @@ -1408,7 +1420,7 @@ reapchild(int signo __unused) for (f = Files; f; f = f->f_next) if (f->f_type == F_PIPE && f->f_un.f_pipe.f_pid == pid) { - (void)close(f->f_file); + close_filed(f); f->f_un.f_pipe.f_pid = 0; log_deadchild(pid, status, f->f_un.f_pipe.f_pname); @@ -1512,7 +1524,7 @@ die(int signo) if (f->f_prevcount) fprintlog(f, 0, (char *)NULL); if (f->f_type == F_PIPE && f->f_un.f_pipe.f_pid > 0) { - (void)close(f->f_file); + close_filed(f); f->f_un.f_pipe.f_pid = 0; } } @@ -1578,11 +1590,11 @@ init(int signo) case F_FORW: case F_CONSOLE: case F_TTY: - (void)close(f->f_file); + close_filed(f); break; case F_PIPE: if (f->f_un.f_pipe.f_pid > 0) { - (void)close(f->f_file); + close_filed(f); deadq_enter(f->f_un.f_pipe.f_pid, f->f_un.f_pipe.f_pname); }