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-rw-r--r--linuxthreads/ChangeLog7
-rw-r--r--linuxthreads/lockfile.c11
2 files changed, 15 insertions, 3 deletions
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index e55344bb4c..57bb848ce5 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,10 @@
+2000-09-01  Ulrich Drepper  <drepper@redhat.com>
+
+	* lockfile.c (__flockfile): If _IO_USER_LOCK bit is set don't do
+	anything.
+	(__funlockfile): Likewise.
+	(__ftrylockfile): If _IO_USER_LOCK bit is set return always 0.
+
 2000-08-30  Ulrich Drepper  <drepper@redhat.com>
 
 	* manager.c (pthread_allocate_stack): Clear descriptor only if not
diff --git a/linuxthreads/lockfile.c b/linuxthreads/lockfile.c
index 0ef02f8757..a7836b8168 100644
--- a/linuxthreads/lockfile.c
+++ b/linuxthreads/lockfile.c
@@ -29,7 +29,8 @@ void
 __flockfile (FILE *stream)
 {
 #ifdef USE_IN_LIBIO
-  __pthread_mutex_lock (stream->_lock);
+  if ((stream->_flags & _IO_USER_LOCK) == 0)
+    __pthread_mutex_lock (stream->_lock);
 #else
 #endif
 }
@@ -44,7 +45,8 @@ void
 __funlockfile (FILE *stream)
 {
 #ifdef USE_IN_LIBIO
-  __pthread_mutex_unlock (stream->_lock);
+  if ((stream->_flags & _IO_USER_LOCK) == 0)
+    __pthread_mutex_unlock (stream->_lock);
 #else
 #endif
 }
@@ -59,7 +61,10 @@ int
 __ftrylockfile (FILE *stream)
 {
 #ifdef USE_IN_LIBIO
-  return __pthread_mutex_trylock (stream->_lock);
+  if ((stream->_flags & _IO_USER_LOCK) == 0)
+    return __pthread_mutex_trylock (stream->_lock);
+  else
+    return 0;
 #else
 #endif
 }