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authorKenny Root <kroot@google.com>2011-02-12 07:13:44 -0800
committerKenny Root <kroot@google.com>2011-02-14 09:32:56 -0800
commitf582340a6a48588aa50da17e1620e8f91b146941 (patch)
treed30c0ffb648b7a43ff469f89f05850f5008482ec /libc/stdio/sprintf.c
parent72f9a5c374bf559e9c69a62c1d95304f913ef6b2 (diff)
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Fix the handle locking in stdio
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. Based on OpenBSD change by guenther@openbsd.org http://www.mail-archive.com/source-changes@cvs.openbsd.org/msg01015.html Bug: 3446659 Change-Id: Ie82116e358c541718d6709ec45ca6796be5a007b
Diffstat (limited to 'libc/stdio/sprintf.c')
-rw-r--r--libc/stdio/sprintf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libc/stdio/sprintf.c b/libc/stdio/sprintf.c
index 67f924b..3cf7952 100644
--- a/libc/stdio/sprintf.c
+++ b/libc/stdio/sprintf.c
@@ -56,7 +56,7 @@ sprintf(char *str, const char *fmt, ...)
f._bf._base = f._p = (unsigned char *)str;
f._bf._size = f._w = INT_MAX;
va_start(ap, fmt);
- ret = vfprintf(&f, fmt, ap);
+ ret = __vfprintf(&f, fmt, ap);
va_end(ap);
*f._p = '\0';
return (ret);