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//===-- Linux implementation of dup ---------------------------------------===//
//
// 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/unistd/dup.h"
#include "src/__support/OSUtil/syscall.h" // For internal syscall function.
#include "src/__support/common.h"
#include "src/errno/libc_errno.h"
#include <sys/syscall.h> // For syscall numbers.
namespace __llvm_libc {
LLVM_LIBC_FUNCTION(int, dup, (int fd)) {
int ret = __llvm_libc::syscall_impl<int>(SYS_dup, fd);
if (ret < 0) {
libc_errno = -ret;
return -1;
}
return ret;
}
} // namespace __llvm_libc
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