92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
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// 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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* 07/2001 Ported by Wayne Boyer
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* 08/2002 Make it use a socket so it works with 2.5 kernel
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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 the basic functionality of the sendfile() system call:
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*
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* 1. Call sendfile() with offset = 0.
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* 2. Call sendfile() with offset in the middle of the file.
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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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#define OFFSET_DESC(x) .desc = "with offset = "#x, .offset = x
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struct test_case_t {
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char *desc;
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off_t offset;
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int64_t count;
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int64_t exp_retval;
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int64_t exp_updated_offset;
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} tc[] = {
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{ OFFSET_DESC(0), 26, 26, 26 },
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{ OFFSET_DESC(2), 24, 24, 26 },
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};
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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_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(unsigned int i)
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{
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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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off_t offset = tc[i].offset;
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off_t before_pos, after_pos;
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before_pos = SAFE_LSEEK(in_fd, 0, SEEK_CUR);
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TEST(sendfile(out_fd, in_fd, &offset, tc[i].count));
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after_pos = SAFE_LSEEK(in_fd, 0, SEEK_CUR);
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if (tc[i].exp_retval != TST_RET)
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tst_res(TFAIL, "sendfile() failed to return expected value, "
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"expected: %" PRId64 ", got: %ld",
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tc[i].exp_retval, TST_RET);
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else if (offset != tc[i].exp_updated_offset)
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tst_res(TFAIL, "sendfile() failed to update OFFSET parameter to "
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"expected value, expected: %" PRId64 ", got: %" PRId64,
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tc[i].exp_updated_offset, (int64_t)(offset));
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else if (before_pos != after_pos)
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tst_res(TFAIL, "sendfile() updated the file position of in_fd "
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"unexpectedly, expected file position: %" PRId64
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", actual file position %" PRId64,
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(int64_t)(before_pos), (int64_t)(after_pos));
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else
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tst_res(TPASS, "sendfile() with %s", tc[i].desc);
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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 = run,
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.tcnt = ARRAY_SIZE(tc),
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};
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