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-rw-r--r--io/lockf.c74
1 files changed, 0 insertions, 74 deletions
diff --git a/io/lockf.c b/io/lockf.c
deleted file mode 100644
index 7b23f66bc9..0000000000
--- a/io/lockf.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/* Copyright (C) 1994,1996,1997,1998,2000,2003 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <sys/types.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <string.h>
-
-/* lockf is a simplified interface to fcntl's locking facilities. */
-
-int
-lockf (int fd, int cmd, off_t len)
-{
- struct flock fl;
-
- memset ((char *) &fl, '\0', sizeof (fl));
-
- /* lockf is always relative to the current file position. */
- fl.l_whence = SEEK_CUR;
- fl.l_start = 0;
- fl.l_len = len;
-
- 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. */
- fl.l_type = F_RDLCK;
- if (__fcntl (fd, F_GETLK, &fl) < 0)
- return -1;
- if (fl.l_type == F_UNLCK || fl.l_pid == __getpid ())
- return 0;
- __set_errno (EACCES);
- return -1;
-
- case F_ULOCK:
- fl.l_type = F_UNLCK;
- cmd = F_SETLK;
- break;
- case F_LOCK:
- fl.l_type = F_WRLCK;
- cmd = F_SETLKW;
- break;
- case F_TLOCK:
- fl.l_type = F_WRLCK;
- cmd = F_SETLK;
- break;
-
- default:
- __set_errno (EINVAL);
- return -1;
- }
-
- /* lockf() is a cancellation point but so is fcntl() if F_SETLKW is
- used. Therefore we don't have to care about cancellation here,
- the fcntl() function will take care of it. */
- return __fcntl (fd, cmd, &fl);
-}