72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2001
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* Copyright (c) Red Hat Inc., 2007
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* 11/2007 Copyed from sendfile02.c by Masatake YAMATO
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* Copyright (c) 2021 Xie Ziyao <xieziyao@huawei.com>
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*/
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/*\
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* [Description]
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*
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* Test that sendfile() system call updates file position of in_fd correctly
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* when passing NULL as offset.
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*/
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#include <stdio.h>
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#include <inttypes.h>
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#include <sys/sendfile.h>
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#include "tst_test.h"
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#define IN_FILE "in_file"
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#define OUT_FILE "out_file"
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static struct stat sb;
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static void setup(void)
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{
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int fd;
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char buf[27];
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fd = SAFE_CREAT(IN_FILE, 00700);
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sprintf(buf, "abcdefghijklmnopqrstuvwxyz");
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SAFE_WRITE(SAFE_WRITE_ALL, fd, buf, strlen(buf));
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SAFE_FSTAT(fd, &sb);
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SAFE_CLOSE(fd);
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fd = SAFE_CREAT(OUT_FILE, 00700);
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SAFE_CLOSE(fd);
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}
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static void run(void)
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{
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off_t after_pos;
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int in_fd = SAFE_OPEN(IN_FILE, O_RDONLY);
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int out_fd = SAFE_OPEN(OUT_FILE, O_WRONLY);
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TEST(sendfile(out_fd, in_fd, NULL, sb.st_size));
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after_pos = SAFE_LSEEK(in_fd, 0, SEEK_CUR);
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if (sb.st_size != TST_RET)
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tst_res(TFAIL, "sendfile() failed to return expected value, expected: %"
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PRId64 ", got: %ld",
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sb.st_size, TST_RET);
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else if (after_pos != sb.st_size)
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tst_res(TFAIL, "sendfile() updated the file position of in_fd unexpectedly,"
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" expected file position: %" PRId64
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" actual file position %" PRId64,
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(int64_t)(sb.st_size), (int64_t)(after_pos));
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else
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tst_res(TPASS, "sendfile() with offset=NULL");
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SAFE_CLOSE(in_fd);
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SAFE_CLOSE(out_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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.setup = setup,
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.test_all = run,
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};
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