From 9962e7fd037872c423544f61cba1c901b045363a Mon Sep 17 00:00:00 2001 From: guenther Date: Wed, 21 Oct 2009 16:04:23 +0000 Subject: Fix the handle locking in stdio to use flockfile/funlockfile internally when and where required. Macros in are updated to automatically call the underlying functions when the process is threaded to obtain the necessary locking. A private mutex is added to protect __sglue, the internal list of FILE handles, and another to protect the one-time initialization. Some routines in libc that use getc() change to use getc_unlocked() as they're either protected by their own lock or aren't thread-safe routines anyway. ok kurt@, earlier version tested by sthen@ and jj@ --- lib/libc/stdio/fclose.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'lib/libc/stdio/fclose.c') diff --git a/lib/libc/stdio/fclose.c b/lib/libc/stdio/fclose.c index bdf6e52fc77..3d0c7b97dd8 100644 --- a/lib/libc/stdio/fclose.c +++ b/lib/libc/stdio/fclose.c @@ -1,4 +1,4 @@ -/* $OpenBSD: fclose.c,v 1.6 2005/08/08 08:05:36 espie Exp $ */ +/* $OpenBSD: fclose.c,v 1.7 2009/10/21 16:04:23 guenther Exp $ */ /*- * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. @@ -45,6 +45,7 @@ fclose(FILE *fp) errno = EBADF; return (EOF); } + FLOCKFILE(fp); WCIO_FREE(fp); r = fp->_flags & __SWR ? __sflush(fp) : 0; if (fp->_close != NULL && (*fp->_close)(fp->_cookie) < 0) @@ -55,7 +56,8 @@ fclose(FILE *fp) FREEUB(fp); if (HASLB(fp)) FREELB(fp); - fp->_flags = 0; /* Release this FILE for reuse. */ fp->_r = fp->_w = 0; /* Mess up if reaccessed. */ + fp->_flags = 0; /* Release this FILE for reuse. */ + FUNLOCKFILE(fp); return (r); } -- cgit v1.2.3-59-g8ed1b