64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Linux Test Project, 2021
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* Copyright (c) International Business Machines Corp., 2001
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* 07/2001 Ported by Wayne Boyer
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*/
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/*\
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* [Description]
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*
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* Tests basic error handling of the fcntl syscall.
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*
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* - EFAULT when lock is outside your accessible address space
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* - EINVAL when cmd argument is not recognized by this kernel
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* - EINVAL when cmd argument is F_SETLK and flock.l_whence is not equal to
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* SEET_CUR,SEEK_SET,SEEK_END
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* - EBADF when fd refers to an invalid file descriptor
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*/
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#include <fcntl.h>
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#include "tst_test.h"
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#define F_BADCMD 999
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static struct flock flock;
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static struct tcase {
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int fd;
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int cmd;
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struct flock *flock;
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char *desc;
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int exp_errno;
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} tcases[] = {
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{1, F_SETLK, NULL, "F_SETLK", EFAULT},
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{1, F_BADCMD, &flock, "F_BADCMD", EINVAL},
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{1, F_SETLK, &flock, "F_SETLK", EINVAL},
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{-1, F_GETLK, &flock, "F_GETLK", EBADF}
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};
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static void verify_fcntl(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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if (!tc->flock)
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tc->flock = tst_get_bad_addr(NULL);
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TST_EXP_FAIL2(fcntl(tc->fd, tc->cmd, tc->flock), tc->exp_errno,
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"fcntl(%d, %s, flock)", tc->fd, tc->desc);
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}
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static void setup(void)
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{
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flock.l_whence = -1;
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flock.l_type = F_WRLCK;
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flock.l_start = 0L;
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flock.l_len = 0L;
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}
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static struct tst_test test = {
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.setup = setup,
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.tcnt = ARRAY_SIZE(tcases),
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.test = verify_fcntl,
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};
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