From bcde12940007e836f7b831f1cdfda8dc2bda0c58 Mon Sep 17 00:00:00 2001
From: Jeff Johnston <jjohnstn@redhat.com>
Date: Fri, 24 Apr 2009 22:52:52 +0000
Subject: 2009-04-24  Jeff johnston  <jjohnstn@redhat.com>

        * libc/stdio/fgetc.c: Make sure sfp lock is acquired before the
        file lock and released before the file lock to avoid a deadlock
        scenario.
        * libc/stdio/fgets.c: Ditto.
        * libc/stdio/fgetwc.c: Ditto.
        * libc/stdio/fgetws.c: Ditto.
        * libc/stdio/fread.c: Ditto.
        * libc/stdio/fseek.c: Ditto.
        * libc/stdio/getc.c: Ditto.
        * libc/stdio/getdelim.c: Ditto.
        * libc/stdio/gets.c: Ditto.
---
 newlib/libc/stdio/getc.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'newlib/libc/stdio/getc.c')

diff --git a/newlib/libc/stdio/getc.c b/newlib/libc/stdio/getc.c
index 5b1fa888a..544ac734c 100644
--- a/newlib/libc/stdio/getc.c
+++ b/newlib/libc/stdio/getc.c
@@ -92,9 +92,11 @@ _DEFUN(_getc_r, (ptr, fp),
 {
   int result;
   CHECK_INIT (ptr, fp);
+  __sfp_lock_acquire ();
   _flockfile (fp);
   result = __sgetc_r (ptr, fp);
   _funlockfile (fp);
+  __sfp_lock_release ();
   return result;
 }
 
@@ -106,9 +108,11 @@ _DEFUN(getc, (fp),
 {
   int result;
   CHECK_INIT (_REENT, fp);
+  __sfp_lock_acquire ();
   _flockfile (fp);
   result = __sgetc_r (_REENT, fp);
   _funlockfile (fp);
+  __sfp_lock_release ();
   return result;
 }
 
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