htl: Get sem_open/sem_close/sem_unlink support [BZ #25524]

This just moves the existing nptl implementation to reuse as it is in
htl.

1 files changed, 38 insertions, 0 deletions

diff --git a/sysdeps/pthread/sem_unlink.c b/sysdeps/pthread/sem_unlink.c
new file mode 100644
index 0000000000..41fbb2c7fd
--- /dev/null
+++ b/sysdeps/pthread/sem_unlink.c
@@ -0,0 +1,38 @@
+/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <semaphore.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "semaphoreP.h"
+#include <shm-directory.h>
+
+int
+sem_unlink (const char *name)
+{
+  /* Construct the filename.  */
+  SHM_GET_NAME (ENOENT, -1, SEM_SHM_PREFIX);
+
+  /* Now try removing it.  */
+  int ret = unlink (shm_name);
+  if (ret < 0 && errno == EPERM)
+    __set_errno (EACCES);
+  return ret;
+}