79 lines
1.5 KiB
C
79 lines
1.5 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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* 12/2007 Copyed from sendfile03.c by Masatake YAMATO
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*/
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/*\
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* [Description]
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*
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* Testcase to test that sendfile(2) system call returns EAGAIN
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* when passing full out_fd opened with O_NONBLOCK.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/sendfile.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/mman.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "tst_test.h"
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#define MAX_FILL_DATA_LENGTH 0xFFFFFFF
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static int p[2];
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static int in_fd;
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static int out_fd;
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static void setup(void)
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{
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int i;
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tst_fill_file("in_file", 'a', 10, 1);
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in_fd = SAFE_OPEN("in_file", O_RDONLY);
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SAFE_SOCKETPAIR(PF_UNIX, SOCK_DGRAM | SOCK_NONBLOCK, 0, p);
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out_fd = p[1];
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for (i = 0; i < MAX_FILL_DATA_LENGTH; ++i) {
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TEST(write(out_fd, "a", 1));
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if (TST_RET < 0) {
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if (TST_ERR == EAGAIN)
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return;
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else
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tst_brk(TBROK | TTERRNO, "write(out_fd, buf, 1)");
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}
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}
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tst_brk(TBROK, "Failed to get EAGAIN after %i bytes",
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MAX_FILL_DATA_LENGTH);
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}
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static void cleanup(void)
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{
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if (p[0])
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SAFE_CLOSE(p[0]);
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if (p[1])
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SAFE_CLOSE(p[1]);
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SAFE_CLOSE(in_fd);
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}
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static void run(void)
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{
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TST_EXP_FAIL(sendfile(out_fd, in_fd, NULL, 1), EAGAIN,
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"sendfile(out_fd, in_fd, NULL, 1) with blocked 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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.cleanup = cleanup,
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.setup = setup,
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.test_all = run,
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};
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