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45 lines
798 B
45 lines
798 B
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2017 Carlo Marcelo Arenas Belon <carlo@gmail.com>
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* Copyright (c) 2018 Cyril Hrubis <chrubis@suse.cz>
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*/
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/*
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* Tests for a special case NULL buffer with size 0 is expected to return 0.
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*/
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#include <errno.h>
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#include "tst_test.h"
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static int fd;
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static void verify_write(void)
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{
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TEST(write(fd, NULL, 0));
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if (TST_RET != 0) {
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tst_res(TFAIL | TTERRNO,
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"write() should have succeeded with ret=0");
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return;
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}
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tst_res(TPASS, "write(fd, NULL, 0) == 0");
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}
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static void setup(void)
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{
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fd = SAFE_OPEN("test_file", O_RDWR | O_CREAT, 0700);
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}
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static void cleanup(void)
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{
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if (fd > 0)
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.test_all = verify_write,
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.needs_tmpdir = 1,
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};
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