2 * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
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14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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28 /* Test lockf(3) with overlapping ranges */
32 1st 0xc50057a0 vnode interlock (vnode interlock) @ kern/kern_lockf.c:190
33 2nd 0xc14710e8 system map (system map) @ vm/vm_kern.c:296
40 #include <sys/types.h>
41 #include <sys/param.h>
57 sprintf(file, "lockf.%d", getpid());
58 if ((fd = open(file,O_CREAT | O_TRUNC | O_RDWR, 0600)) == -1)
59 err(1, "creat(%s)", file);
60 bzero(buf, sizeof(buf));
61 for (i = 0; i < 1024; i++)
62 if (write(fd, &buf, sizeof(buf)) != sizeof(buf))
81 if ((fd = open(file, O_RDWR, 0600)) == -1)
82 err(1, "open(%s)", file);
84 for (i = 0; i < 1024; i++) {
85 pos = random_int(0, 1024 * 1024 - 1);
86 if (lseek(fd, pos, SEEK_SET) == -1)
88 size = random_int(1, 1024 * 1024 - pos);
91 if (lockf(fd, F_LOCK, size) == -1)
92 err(1, "lockf(%s, F_LOCK)", file);
93 size = random_int(1, size);
94 if (lockf(fd, F_ULOCK, size) == -1)
95 err(1, "lockf(%s, F_ULOCK)", file);