42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/* Smoke test for ioctl.
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Copyright (C) 2021-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <support/check.h>
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#include <support/xunistd.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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static int
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do_test (void)
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{
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int pair[2];
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TEST_COMPARE (socketpair (AF_UNIX, SOCK_STREAM, 0, pair), 0);
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TEST_COMPARE (write (pair[0], "buffer", sizeof ("buffer")),
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sizeof ("buffer"));
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int value;
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TEST_COMPARE (ioctl (pair[1], FIONREAD, &value), 0);
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TEST_COMPARE (value, sizeof ("buffer"));
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TEST_COMPARE (ioctl (pair[0], FIONREAD, &value), 0);
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TEST_COMPARE (value, 0);
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xclose (pair[0]);
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xclose (pair[1]);
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return 0;
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}
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#include <support/test-driver.c>
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