69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
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* Author: Vatsal Avasthi
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*
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* Test Description:
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* 1) flock() returns -1 and sets error number to EBADF if the file descriptor
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* is invalid.
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* 2) flock() returns -1 and sets error number to EINVAL if the argument
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* operation does not include LOCK_SH,LOCK_EX,LOCK_UN.
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* 3) flock() returns -1 and sets error number to EINVAL if an invalid
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* combination of locking modes is used i.e LOCK_SH with LOCK_EX
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*/
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#include <errno.h>
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#include <sys/file.h>
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#include "tst_test.h"
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static int badfd = -1;
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static int fd;
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static struct tcase {
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int *fd;
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int operation;
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int exp_err;
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} tcases[] = {
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{&badfd, LOCK_SH, EBADF},
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{&fd, LOCK_NB, EINVAL},
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{&fd, LOCK_SH | LOCK_EX, EINVAL},
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};
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static void verify_flock(unsigned n)
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{
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struct tcase *tc = &tcases[n];
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fd = SAFE_OPEN("testfile", O_RDWR);
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TEST(flock(*tc->fd, tc->operation));
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if (TST_RET == 0) {
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tst_res(TFAIL | TTERRNO, "flock() succeeded unexpectedly");
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SAFE_CLOSE(fd);
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return;
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}
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if (tc->exp_err == TST_ERR) {
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tst_res(TPASS | TTERRNO, "flock() failed expectedly");
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} else {
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tst_res(TFAIL | TTERRNO, "flock() failed unexpectedly, "
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"expected %s", tst_strerrno(tc->exp_err));
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}
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SAFE_CLOSE(fd);
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}
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static void setup(void)
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{
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int fd1;
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fd1 = SAFE_OPEN("testfile", O_CREAT | O_TRUNC | O_RDWR, 0666);
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SAFE_CLOSE(fd1);
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(tcases),
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.test = verify_flock,
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.needs_tmpdir = 1,
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.setup = setup,
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};
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