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misc/tst-ioctl.c
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Smoke test for ioctl. Copyright (C) 2021-2026 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #include <support/check.h> #include <support/xunistd.h> #include <sys/ioctl.h> #include <sys/socket.h> static int do_test (void) { int pair[2]; TEST_COMPARE (socketpair (AF_UNIX, SOCK_STREAM, 0, pair), 0); TEST_COMPARE (write (pair[0], "buffer", sizeof ("buffer")), sizeof ("buffer")); int value; TEST_COMPARE (ioctl (pair[1], FIONREAD, &value), 0); TEST_COMPARE (value, sizeof ("buffer")); TEST_COMPARE (ioctl (pair[0], FIONREAD, &value), 0); TEST_COMPARE (value, 0); xclose (pair[0]); xclose (pair[1]); return 0; } #include <support/test-driver.c>