1 files changed, 70 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/i386/lockf64.c b/REORG.TODO/sysdeps/unix/sysv/linux/i386/lockf64.c
new file mode 100644
index 0000000000..23b99f8f22
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/i386/lockf64.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 1994-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <string.h>
+#include <sysdep.h>
+
+/* lockf is a simplified interface to fcntl's locking facilities.  */
+
+int
+lockf64 (int fd, int cmd, off64_t len64)
+{
+  struct flock64 fl64;
+  int cmd64;
+  int result;
+
+  memset ((char *) &fl64, '\0', sizeof (fl64));
+  fl64.l_whence = SEEK_CUR;
+  fl64.l_start = 0;
+  fl64.l_len = len64;
+
+  switch (cmd)
+    {
+    case F_TEST:
+      /* Test the lock: return 0 if FD is unlocked or locked by this process;
+	 return -1, set errno to EACCES, if another process holds the lock.  */
+      fl64.l_type = F_RDLCK;
+      INTERNAL_SYSCALL_DECL (err);
+      result = INTERNAL_SYSCALL (fcntl64, err, 3, fd, F_GETLK64, &fl64);
+      if (__glibc_unlikely (INTERNAL_SYSCALL_ERROR_P (result, err)))
+	return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (result,
+									  err));
+      if (fl64.l_type == F_UNLCK || fl64.l_pid == __getpid ())
+        return 0;
+      return INLINE_SYSCALL_ERROR_RETURN_VALUE (EACCES);
+    case F_ULOCK:
+      fl64.l_type = F_UNLCK;
+      cmd64 = F_SETLK64;
+      break;
+    case F_LOCK:
+      fl64.l_type = F_WRLCK;
+      cmd64 = F_SETLKW64;
+      break;
+    case F_TLOCK:
+      fl64.l_type = F_WRLCK;
+      cmd64 = F_SETLK64;
+      break;
+
+    default:
+      return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
+    }
+  return INLINE_SYSCALL (fcntl64, 3, fd, cmd64, &fl64);
+}