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authorkurt <kurt@openbsd.org>2009-11-09 00:18:27 +0000
committerkurt <kurt@openbsd.org>2009-11-09 00:18:27 +0000
commitc5acf43a359ac8e21498420ba26e0d56c2821a31 (patch)
treeaea05e2f1bc3a9156f2e6099880b0eb623c7e4e5 /lib/libc/stdio/fvwrite.c
parentforwards_get() also calls alias_to_expand_node() (diff)
downloadwireguard-openbsd-c5acf43a359ac8e21498420ba26e0d56c2821a31.tar.xz
wireguard-openbsd-c5acf43a359ac8e21498420ba26e0d56c2821a31.zip
Fix the handle locking in stdio to use flockfile/funlockfile
internally when and where required. Macros in <stdio.h> 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. committing on behalf of and okay guenther@ now that we have install media space available.
Diffstat (limited to 'lib/libc/stdio/fvwrite.c')
-rw-r--r--lib/libc/stdio/fvwrite.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/libc/stdio/fvwrite.c b/lib/libc/stdio/fvwrite.c
index 9e916afddf5..1088991fd59 100644
--- a/lib/libc/stdio/fvwrite.c
+++ b/lib/libc/stdio/fvwrite.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: fvwrite.c,v 1.16 2009/10/22 01:23:16 guenther Exp $ */
+/* $OpenBSD: fvwrite.c,v 1.17 2009/11/09 00:18:27 kurt Exp $ */
/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
@@ -134,7 +134,7 @@ __sfvwrite(FILE *fp, struct __suio *uio)
COPY(w);
/* fp->_w -= w; */ /* unneeded */
fp->_p += w;
- if (fflush(fp))
+ if (__sflush(fp))
goto err;
} else if (len >= (w = fp->_bf._size)) {
/* write directly */
@@ -174,7 +174,7 @@ __sfvwrite(FILE *fp, struct __suio *uio)
COPY(w);
/* fp->_w -= w; */
fp->_p += w;
- if (fflush(fp))
+ if (__sflush(fp))
goto err;
} else if (s >= (w = fp->_bf._size)) {
w = (*fp->_write)(fp->_cookie, p, w);
@@ -188,7 +188,7 @@ __sfvwrite(FILE *fp, struct __suio *uio)
}
if ((nldist -= w) == 0) {
/* copied the newline: flush and forget */
- if (fflush(fp))
+ if (__sflush(fp))
goto err;
nlknown = 0;
}