Provide mprotect syscall

sysdeps/nacl/nacl_syscalls.h

 /*
  * Copyright (c) 2011 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /*
  * NaCl kernel / service run-time system call numbers
  */
 
@@ skipping 32 matching lines @@
 #define NACL_sys_fstat                  17
 #define NACL_sys_chmod                  18
 /* no fchmod emulation on windows */
 
 #define NACL_sys_sysbrk                 20
 #define NACL_sys_mmap                   21
 #define NACL_sys_munmap                 22
 
 #define NACL_sys_getdents               23
 
+#define NACL_sys_mprotect               24
+
 #define NACL_sys_exit                   30
 #define NACL_sys_getpid                 31
 #define NACL_sys_sched_yield            32
 #define NACL_sys_sysconf                33
 
 #define NACL_sys_gettimeofday           40
 #define NACL_sys_clock                  41
 #define NACL_sys_nanosleep              42
 #define NACL_sys_clock_getres           43
 #define NACL_sys_clock_gettime          44
@@ skipping 74 matching lines @@
 typedef int (*TYPE_nacl_imc_makeboundsock) (int *dp);
 typedef int (*TYPE_nacl_imc_socketpair) (int *d2);
 typedef int (*TYPE_nacl_imc_mem_obj_create) (size_t nbytes);
 
 typedef void *(*TYPE_nacl_mmap) (void *start, size_t length,
                                  int prot, int flags, int desc,
                                  nacl_abi_off_t *offset);
 
 typedef int (*TYPE_nacl_munmap) (void *start, size_t length);
 
+typedef int (*TYPE_nacl_mprotect) (void *addr, size_t length, int prot);
+
 typedef void (*TYPE_nacl_thread_exit) (int32_t *stack_flag);
 typedef int (*TYPE_nacl_thread_create) (void *start_user_address,
                                         void *stack,
                                         void *thread_ptr,
                                         void *second_thread_ptr);
 typedef int (*TYPE_nacl_thread_nice) (const int nice);
 
 typedef int (*TYPE_nacl_mutex_create) (void);
 typedef int (*TYPE_nacl_mutex_lock) (int mutex);
 typedef int (*TYPE_nacl_mutex_unlock) (int mutex);
@@ skipping 32 matching lines @@
 typedef void *(*TYPE_nacl_second_tls_get) (void);
 typedef int (*TYPE_nacl_srpc_get_fd) (void);
 typedef int (*TYPE_nacl_dyncode_create) (void *dest, const void *src,
                                        size_t size);
 typedef int (*TYPE_nacl_dyncode_modify) (void *dest, const void *src,
                                        size_t size);
 typedef int (*TYPE_nacl_dyncode_delete) (void *dest, size_t size);
 
 
 #endif