Apply a policy to the renderer.

content/common/sandbox_init_linux.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/common/sandbox_init.h"
 
 #if defined(OS_LINUX) && defined(__x86_64__)
 
 #include <asm/unistd.h>
 #include <errno.h>
@@ skipping 271 matching lines @@
   // These are under investigation, and hopefully not here for the long term.
   EmitAllowSyscall(__NR_shmctl, program);
   EmitAllowSyscall(__NR_shmat, program);
   EmitAllowSyscall(__NR_shmdt, program);
 
   EmitFailSyscall(__NR_open, ENOENT, program);
   EmitFailSyscall(__NR_execve, ENOENT, program);
   EmitFailSyscall(__NR_access, ENOENT, program);
 }
 
+static void ApplyRendererPolicy(std::vector<struct sock_filter>* program) {
+  // "Hot" syscalls go first.
+  EmitAllowSyscall(__NR_times, program);
+  EmitAllowSyscall(__NR_futex, program);
+  EmitAllowSyscall(__NR_write, program);
+  EmitAllowSyscall(__NR_epoll_wait, program);
+  EmitAllowSyscall(__NR_nanosleep, program);
+  EmitAllowSyscall(__NR_madvise, program);
+
+  EmitAllowSyscall(__NR_mmap, program);
+  EmitAllowSyscall(__NR_mprotect, program);
+  EmitAllowSyscall(__NR_clone, program);
+  EmitAllowSyscall(__NR_set_robust_list, program);
+  EmitAllowSyscall(__NR_getuid, program);
+  EmitAllowSyscall(__NR_geteuid, program);
+  EmitAllowSyscall(__NR_getgid, program);
+  EmitAllowSyscall(__NR_getegid, program);
+  EmitAllowSyscall(__NR_epoll_create, program);
+  EmitAllowSyscall(__NR_fcntl, program);
+  EmitAllowSyscall(__NR_socketpair, program);
+  EmitAllowSyscall(__NR_pipe, program);
+  EmitAllowSyscall(__NR_epoll_ctl, program);
+  EmitAllowSyscall(__NR_gettid, program);
+  EmitAllowSyscall(__NR_prctl, program);
+  EmitAllowSyscall(__NR_read, program);
+  EmitAllowSyscall(__NR_fstat, program);
+  EmitAllowSyscall(__NR_sendmsg, program);
+  EmitAllowSyscall(__NR_sched_get_priority_min, program);
+  EmitAllowSyscall(__NR_sched_get_priority_max, program);
+  EmitAllowSyscall(__NR_sched_getparam, program);
+  EmitAllowSyscall(__NR_sched_getscheduler, program);
+  EmitAllowSyscall(__NR_sched_setscheduler, program);
+  EmitAllowSyscall(__NR_rt_sigaction, program);
+  EmitAllowSyscall(__NR_recvmsg, program);
+  EmitAllowSyscall(__NR_dup, program);
+  // TODO(cevans): ioctl() in the renderer??
+  EmitAllowSyscall(__NR_ioctl, program);
+  EmitAllowSyscall(__NR_lseek, program);
+  EmitAllowSyscall(__NR_close, program);
+  EmitAllowSyscall(__NR_munmap, program);
+  EmitAllowSyscall(__NR_sysinfo, program);
+  EmitAllowSyscall(__NR_uname, program);
+  EmitAllowSyscall(__NR_brk, program);
+  EmitAllowSyscall(__NR_restart_syscall, program);
+  EmitAllowSyscall(__NR_exit_group, program);
+  EmitAllowSyscall(__NR_fdatasync, program);  // HTML5 WebDatabase / sqlite.
+  EmitAllowSyscall(__NR_setpriority, program);
+  EmitAllowSyscall(__NR_exit, program);
+  EmitAllowSyscall(__NR_shutdown, program);
+  EmitAllowSyscall(__NR_pread64, program);  // Seen with PDF / Pepper.
+
+  EmitAllowSyscall(__NR_shmget, program);
+  EmitAllowSyscall(__NR_shmat, program);
+  EmitAllowSyscall(__NR_shmctl, program);
+  EmitAllowSyscall(__NR_shmdt, program);
+
+  EmitFailSyscall(__NR_open, ENOENT, program);
+  EmitFailSyscall(__NR_stat, ENOENT, program);
+}
+
 static bool CanUseSeccompFilters() {
   int ret = prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, 0, 0, 0);
   if (ret != 0 && errno == EFAULT)
     return true;
   return false;
 }
 
 static void InstallFilter(const std::vector<struct sock_filter>& program) {
   int ret = prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0);
   PLOG_IF(FATAL, ret != 0) << "prctl(PR_SET_NO_NEW_PRIVS) failed";
@@ skipping 27 matching lines @@
 
   CheckSingleThreaded();
 
   std::vector<struct sock_filter> program;
   EmitPreamble(&program);
 
   if (process_type == switches::kGpuProcess) {
     ApplyGPUPolicy(&program);
   } else if (process_type == switches::kPpapiPluginProcess) {
     ApplyFlashPolicy(&program);
+  } else if (process_type == switches::kRendererProcess) {
+    ApplyRendererPolicy(&program);
   } else {
     NOTREACHED();
   }
 
   EmitTrap(&program);
 
   InstallSIGSYSHandler();
   InstallFilter(program);
 }
 
 }  // namespace content
 
 #else
 
 namespace content {
 
 void InitializeSandbox() {
 }
 
 }  // namespace content
 
 #endif