libsanitizer/sanitizer_common/sanitizer_syscall_generic.inc

   1 //===-- sanitizer_syscall_generic.inc ---------------------------*- C++ -*-===//
   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 // Generic implementations of internal_syscall* and internal_iserror.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 // NetBSD uses libc calls directly
  14 #if !SANITIZER_NETBSD
  15
  16 #if SANITIZER_FREEBSD || SANITIZER_APPLE || SANITIZER_SOLARIS
  17 # define SYSCALL(name) SYS_ ## name
  18 #else
  19 # define SYSCALL(name) __NR_ ## name
  20 #endif
  21
  22 #if (defined(__x86_64__) && (SANITIZER_FREEBSD || SANITIZER_APPLE)) || \
  23     (defined(__aarch64__) && SANITIZER_FREEBSD)
  24 # define internal_syscall __syscall
  25 # else
  26 # define internal_syscall syscall
  27 #endif
  28
  29 #endif
  30
  31 bool internal_iserror(uptr retval, int *rverrno) {
  32   if (retval == (uptr)-1) {
  33     if (rverrno)
  34       *rverrno = errno;
  35     return true;
  36   } else {
  37     return false;
  38   }
  39 }