109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2014
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*/
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/*\
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* [Description]
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*
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* Testcase copied from sendfile02.c to test the basic functionality of
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* the sendfile() system call on large file. There is a kernel bug which
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* introduced by commit 8f9c0119d7ba9 and fixed by commit 5d73320a96fcc.
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*
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* Only supports 64bit systems.
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*
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* [Algorithm]
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*
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* 1. Call sendfile() with offset at 0.
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* 2. Call sendfile() with offset at 3GB.
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*/
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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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#include "lapi/abisize.h"
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#ifndef TST_ABI32
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#define ONE_GB (INT64_C(1) << 30)
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#define IN_FILE "in_file"
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#define OUT_FILE "out_file"
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static 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 at 0", 0, ONE_GB, ONE_GB, ONE_GB },
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{ "offset at 3GB", 3 * ONE_GB, ONE_GB, ONE_GB, 4 * ONE_GB }
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};
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static void setup(void)
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{
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int i, fd;
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if (!tst_fs_has_free(".", 5, TST_GB))
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tst_brk(TCONF, "Test on large file needs 5G free space");
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fd = SAFE_CREAT(IN_FILE, 00700);
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for (i = 1; i <= (4 * 1024); ++i) {
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SAFE_LSEEK(fd, 1024 * 1024 - 1, SEEK_CUR);
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SAFE_WRITE(SAFE_WRITE_ALL, fd, "C", 1);
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}
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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 (TST_RET != tc[i].exp_retval)
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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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.max_runtime = 120,
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.tags = (const struct tst_tag[]) {
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{"linux-git", "5d73320a96fcc"},
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{}
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}
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};
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#else
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TST_TEST_TCONF("This test is only for 64bit");
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#endif
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