1/*
2 * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: head/lib/libc/stdio/_flock_stub.c 72373 2001-02-11 22:06:43Z deischen $
33 *
34 */
35
36/*
37 * POSIX stdio FILE locking functions. These assume that the locking
38 * is only required at FILE structure level, not at file descriptor
39 * level too.
40 *

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63 */
64struct __file_lock {
65 pthread_mutex_t fl_mutex;
66 pthread_t fl_owner; /* current owner */
67 int fl_count; /* recursive lock count */
68};
69
70/*
71 * Allocate and initialize a file lock.
72 */
73static int
74init_lock(FILE *fp)
75{
76 struct __file_lock *p;
77 int ret;
78

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