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-rw-r--r--lib/libc/stdio/putw.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/libc/stdio/putw.c b/lib/libc/stdio/putw.c
index 4ba8982..604bed0 100644
--- a/lib/libc/stdio/putw.c
+++ b/lib/libc/stdio/putw.c
@@ -40,11 +40,17 @@ static char sccsid[] = "@(#)putw.c 8.1 (Berkeley) 6/4/93";
#include <stdio.h>
#include "fvwrite.h"
+#ifdef _THREAD_SAFE
+#include <pthread.h>
+#include "pthread_private.h"
+#endif
+int
putw(w, fp)
int w;
FILE *fp;
{
+ int retval;
struct __suio uio;
struct __siov iov;
@@ -52,5 +58,12 @@ putw(w, fp)
iov.iov_len = uio.uio_resid = sizeof(w);
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
- return (__sfvwrite(fp, &uio));
+#ifdef _THREAD_SAFE
+ _thread_flockfile(fp,__FILE__,__LINE__);
+#endif
+ retval = __sfvwrite(fp, &uio);
+#ifdef _THREAD_SAFE
+ _thread_funlockfile(fp);
+#endif
+ return (retval);
}
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