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tests/vhangup.c
35 строк
691 B
Dmitry V. Levin
Update copyright headers
17 июл 2021, 11:00
17 июл 2021, 11:00
81e1975
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/* * Check decoding of vhangup syscall. * * Copyright (c) 2016-2021 The strace developers. * All rights reserved. * * SPDX-License-Identifier: GPL-2.0-or-later */ #include "tests.h" #include "scno.h" #include <stdio.h> #include <unistd.h> int main(void) { if (setsid() == -1) perror_msg_and_skip("setsid"); long rc = syscall(__NR_vhangup); /* * On setsid() success, the new session has no controlling terminal, * therefore a subsequent vhangup() has nothing to hangup. * * The system call, however, returns 0 iff the calling process * has CAP_SYS_TTY_CONFIG capability. */ printf("vhangup() = %s\n", sprintrc(rc)); puts("+++ exited with 0 +++"); return 0; }