libc/src/sys/resource/linux/getrlimit.cpp

   1 //===-- Linux implementation of getrlimit ---------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/sys/resource/getrlimit.h"
  10
  11 #include "src/__support/OSUtil/syscall.h" // For internal syscall function.
  12 #include "src/__support/common.h"
  13
  14 #include "src/errno/libc_errno.h"
  15 #include <sys/resource.h> // For struct rlimit
  16 #include <sys/syscall.h>  // For syscall numbers.
  17
  18 namespace LIBC_NAMESPACE {
  19
  20 LLVM_LIBC_FUNCTION(int, getrlimit, (int res, struct rlimit *limits)) {
  21   int ret =
  22       LIBC_NAMESPACE::syscall_impl<int>(SYS_prlimit64, 0, res, nullptr, limits);
  23   if (ret < 0) {
  24     libc_errno = -ret;
  25     return -1;
  26   }
  27   return 0;
  28 }
  29
  30 } // namespace LIBC_NAMESPACE