73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
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*
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* AUTHOR : William Roske
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* CO-PILOT : Dave Fenner
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*/
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/*\
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* [Description]
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*
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* Basic test for fcntl(2) using F_GETLK argument.
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*
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* If the lock could be placed, fcntl() does not actually place it, but
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* returns F_UNLCK in the l_type field of lock and leaves the other field
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* of the structure unchanged.
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include "tst_test.h"
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static int fd = -1, pid;
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static struct flock flocks;
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static void verify_fcntl(void)
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{
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/* F_GETLK will change flock.l_type to F_UNLCK, so need to reset */
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flocks.l_type = F_RDLCK;
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TST_EXP_PASS(fcntl(fd, F_GETLK, &flocks), "fcntl(%d, F_GETLK, &flocks)", fd);
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TST_EXP_EQ_LI(flocks.l_type, F_UNLCK);
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TST_EXP_EQ_LI(flocks.l_whence, SEEK_CUR);
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TST_EXP_EQ_LI(flocks.l_start, 0);
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TST_EXP_EQ_LI(flocks.l_len, 0);
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TST_EXP_EQ_LI(flocks.l_pid, pid);
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}
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static void setup(void)
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{
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pid = getpid();
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fd = SAFE_OPEN("filename", O_RDWR | O_CREAT, 0700);
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flocks.l_whence = SEEK_CUR;
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flocks.l_start = 0;
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flocks.l_len = 0;
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flocks.l_pid = pid;
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}
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static void cleanup(void)
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{
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if (fd > -1)
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.needs_tmpdir = 1,
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.test_all = verify_fcntl,
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.setup = setup,
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.cleanup = cleanup,
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};
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