libc/src/sys/utsname/linux/uname.cpp

//===-- Linux implementation of uname -------------------------------------===//
//
// 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/sys/utsname/uname.h"

#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
#include "src/__support/common.h"

#include "src/__support/macros/config.h"
#include "src/errno/libc_errno.h"
#include <sys/syscall.h> // For syscall numbers.
#include <sys/utsname.h>

namespace LIBC_NAMESPACE_DECL {

LLVM_LIBC_FUNCTION(int, uname, (struct utsname * name)) {
  int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_uname, name);

  if (ret >= 0)
    return 1;
  libc_errno = -ret;
  return -1;
}

} // namespace LIBC_NAMESPACE_DECL