| /* mprotect with a memory protection key. |
| Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <sys/mman.h> |
| #include <sys/syscall.h> |
| #include <sysdep.h> |
| |
| int |
| pkey_mprotect (void *addr, size_t len, int prot, int pkey) |
| { |
| if (pkey == -1) |
| /* If the key is -1, the system call is precisely equivalent to |
| mprotect. */ |
| return __mprotect (addr, len, prot); |
| #ifdef __NR_pkey_mprotect |
| return INLINE_SYSCALL_CALL (pkey_mprotect, addr, len, prot, pkey); |
| #else |
| __set_errno (ENOSYS); |
| return -1; |
| #endif |
| } |
