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//===-- Linux implementation of tcgetsid ----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/termios/tcgetsid.h"
#include "src/__support/OSUtil/syscall.h"
#include "src/__support/common.h"
#include "src/__support/libc_errno.h"
#include "src/__support/macros/config.h"
#include <asm/ioctls.h> // Safe to include without the risk of name pollution.
#include <sys/syscall.h> // For syscall numbers
#include <termios.h>
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(pid_t, tcgetsid, (int fd)) {
pid_t sid;
int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_ioctl, fd, TIOCGSID, &sid);
if (ret < 0) {
libc_errno = -ret;
return -1;
}
return sid;
}
} // namespace LIBC_NAMESPACE_DECL
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