[MIPS] Add seccomp bpf support

sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc

 // Copyright (c) 2013 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 "sandbox/linux/seccomp-bpf-helpers/syscall_sets.h"
 
 #include "build/build_config.h"
 #include "sandbox/linux/services/linux_syscalls.h"
 
 namespace sandbox {
@@ skipping 11 matching lines @@
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsAllowedGettime(int sysno) {
   switch (sysno) {
     case __NR_clock_gettime:
     case __NR_gettimeofday:
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_time:
 #endif
       return true;
     case __NR_adjtimex:         // Privileged.
     case __NR_clock_adjtime:    // Privileged.
     case __NR_clock_getres:     // Could be allowed.
     case __NR_clock_nanosleep:  // Could be allowed.
     case __NR_clock_settime:    // Privileged.
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_ftime:  // Obsolete.
 #endif
     case __NR_settimeofday:  // Privileged.
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_stime:
 #endif
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsCurrentDirectory(int sysno) {
   switch (sysno) {
     case __NR_getcwd:
@@ skipping 26 matching lines @@
 #if defined(__i386__) || defined(__arm__)
     case __NR_chown32:
 #endif
     case __NR_creat:
     case __NR_execve:
     case __NR_faccessat:  // EPERM not a valid errno.
     case __NR_fchmodat:
     case __NR_fchownat:  // Should be called chownat ?
 #if defined(__x86_64__)
     case __NR_newfstatat:  // fstatat(). EPERM not a valid errno.
-#elif defined(__i386__) || defined(__arm__)
+#elif defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_fstatat64:
 #endif
     case __NR_futimesat:  // Should be called utimesat ?
     case __NR_lchown:
 #if defined(__i386__) || defined(__arm__)
     case __NR_lchown32:
 #endif
     case __NR_link:
     case __NR_linkat:
     case __NR_lookup_dcookie:  // ENOENT not a valid errno.
     case __NR_lstat:           // EPERM not a valid errno.
 #if defined(__i386__)
     case __NR_oldlstat:
 #endif
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_lstat64:
 #endif
     case __NR_mkdir:
     case __NR_mkdirat:
     case __NR_mknod:
     case __NR_mknodat:
     case __NR_open:
     case __NR_openat:
     case __NR_readlink:  // EPERM not a valid errno.
     case __NR_readlinkat:
     case __NR_rename:
     case __NR_renameat:
     case __NR_rmdir:
     case __NR_stat:  // EPERM not a valid errno.
 #if defined(__i386__)
     case __NR_oldstat:
 #endif
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_stat64:
 #endif
     case __NR_statfs:  // EPERM not a valid errno.
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_statfs64:
 #endif
     case __NR_symlink:
     case __NR_symlinkat:
     case __NR_truncate:
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_truncate64:
 #endif
     case __NR_unlink:
     case __NR_unlinkat:
     case __NR_uselib:  // Neither EPERM, nor ENOENT are valid errno.
     case __NR_ustat:   // Same as above. Deprecated.
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_utime:
 #endif
     case __NR_utimensat:  // New.
     case __NR_utimes:
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsAllowedFileSystemAccessViaFd(int sysno) {
   switch (sysno) {
     case __NR_fstat:
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_fstat64:
 #endif
       return true;
 // TODO(jln): these should be denied gracefully as well (moved below).
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_fadvise64:  // EPERM not a valid errno.
 #endif
 #if defined(__i386__)
     case __NR_fadvise64_64:
 #endif
 #if defined(__arm__)
     case __NR_arm_fadvise64_64:
 #endif
     case __NR_fdatasync:  // EPERM not a valid errno.
     case __NR_flock:      // EPERM not a valid errno.
     case __NR_fstatfs:    // Give information about the whole filesystem.
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_fstatfs64:
 #endif
     case __NR_fsync:  // EPERM not a valid errno.
 #if defined(__i386__)
     case __NR_oldfstat:
 #endif
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_sync_file_range:  // EPERM not a valid errno.
 #elif defined(__arm__)
     case __NR_arm_sync_file_range:  // EPERM not a valid errno.
 #endif
     default:
       return false;
   }
 }
 
 // EPERM is a good errno for any of these.
 bool SyscallSets::IsDeniedFileSystemAccessViaFd(int sysno) {
   switch (sysno) {
     case __NR_fallocate:
     case __NR_fchmod:
     case __NR_fchown:
     case __NR_ftruncate:
 #if defined(__i386__) || defined(__arm__)
     case __NR_fchown32:
+#endif
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_ftruncate64:
 #endif
     case __NR_getdents:    // EPERM not a valid errno.
     case __NR_getdents64:  // EPERM not a valid errno.
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_readdir:
 #endif
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsGetSimpleId(int sysno) {
   switch (sysno) {
@@ skipping 20 matching lines @@
 #endif
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsProcessPrivilegeChange(int sysno) {
   switch (sysno) {
     case __NR_capset:
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_ioperm:  // Intel privilege.

[mdempsky, 2014/07/14 18:10:50]

Do these comments need to be updated?

[nedeljko, 2014/07/15 15:22:15]

No they don't.
I will remove defined(__mips__) from here.

     case __NR_iopl:    // Intel privilege.
 #endif
     case __NR_setfsgid:
     case __NR_setfsuid:
     case __NR_setgid:
     case __NR_setgroups:
     case __NR_setregid:
     case __NR_setresgid:
     case __NR_setresuid:
     case __NR_setreuid:
@@ skipping 25 matching lines @@
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsAllowedSignalHandling(int sysno) {
   switch (sysno) {
     case __NR_rt_sigaction:
     case __NR_rt_sigprocmask:
     case __NR_rt_sigreturn:
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_sigaction:
     case __NR_sigprocmask:
     case __NR_sigreturn:
 #endif
       return true;
     case __NR_rt_sigpending:
     case __NR_rt_sigqueueinfo:
     case __NR_rt_sigsuspend:
     case __NR_rt_sigtimedwait:
     case __NR_rt_tgsigqueueinfo:
     case __NR_sigaltstack:
     case __NR_signalfd:
     case __NR_signalfd4:
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_sigpending:
     case __NR_sigsuspend:
 #endif
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_signal:
     case __NR_sgetmask:  // Obsolete.
     case __NR_ssetmask:
 #endif
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsAllowedOperationOnFd(int sysno) {
   switch (sysno) {
     case __NR_close:
     case __NR_dup:
     case __NR_dup2:
     case __NR_dup3:
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
     case __NR_shutdown:
 #endif
       return true;
     case __NR_fcntl:
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_fcntl64:
 #endif
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsKernelInternalApi(int sysno) {
   switch (sysno) {
     case __NR_restart_syscall:
@@ skipping 15 matching lines @@
     case __NR_waitid:
 #if defined(__i386__)
     case __NR_waitpid:
 #endif
       return true;
     case __NR_clone:  // Should be parameter-restricted.
     case __NR_setns:  // Privileged.
     case __NR_fork:
 #if defined(__i386__) || defined(__x86_64__)
     case __NR_get_thread_area:
+#endif
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_set_thread_area:
 #endif
     case __NR_set_tid_address:
     case __NR_unshare:
+#if !defined(__mips__)
     case __NR_vfork:
+#endif
     default:
       return false;
   }
 }
 
 // It's difficult to restrict those, but there is attack surface here.
 bool SyscallSets::IsAllowedFutex(int sysno) {
   switch (sysno) {
     case __NR_get_robust_list:
     case __NR_set_robust_list:
@@ skipping 22 matching lines @@
       return false;
   }
 }
 
 bool SyscallSets::IsAllowedGetOrModifySocket(int sysno) {
   switch (sysno) {
     case __NR_pipe:
     case __NR_pipe2:
       return true;
     default:
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
     case __NR_socketpair:  // We will want to inspect its argument.
 #endif
       return false;
   }
 }
 
 bool SyscallSets::IsDeniedGetOrModifySocket(int sysno) {
   switch (sysno) {
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
     case __NR_accept:
     case __NR_accept4:
     case __NR_bind:
     case __NR_connect:
     case __NR_socket:
     case __NR_listen:
       return true;
 #endif
     default:
       return false;
   }
 }
 
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
 // Big multiplexing system call for sockets.
 bool SyscallSets::IsSocketCall(int sysno) {
   switch (sysno) {
     case __NR_socketcall:
       return true;
     default:
       return false;
   }
 }
 #endif
 
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
 bool SyscallSets::IsNetworkSocketInformation(int sysno) {
   switch (sysno) {
     case __NR_getpeername:
     case __NR_getsockname:
     case __NR_getsockopt:
     case __NR_setsockopt:
       return true;
     default:
       return false;
   }
 }
 #endif
 
 bool SyscallSets::IsAllowedAddressSpaceAccess(int sysno) {
   switch (sysno) {
     case __NR_brk:
     case __NR_mlock:
     case __NR_munlock:
     case __NR_munmap:
       return true;
     case __NR_madvise:
     case __NR_mincore:
     case __NR_mlockall:
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_mmap:
 #endif
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_mmap2:
 #endif
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_modify_ldt:
 #endif
     case __NR_mprotect:
     case __NR_mremap:
     case __NR_msync:
     case __NR_munlockall:
     case __NR_readahead:
     case __NR_remap_file_pages:
+#if defined(__i386__) || defined(__mips__)
+    case __NR_vm86:

[mdempsky, 2014/07/14 18:10:50]

Doesn't really matter since it's disallowed here anyway, but is vm86 really a
system call on MIPS?  The Linux man page makes it sound like its x86-32 only.

[nedeljko, 2014/07/15 15:22:15]

There is a definition for this system call, but it returns ENOSYS, so I will 
remove defined(__mips__) here.

+#endif
 #if defined(__i386__)
-    case __NR_vm86:
     case __NR_vm86old:
 #endif
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsAllowedGeneralIo(int sysno) {
   switch (sysno) {
     case __NR_lseek:
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR__llseek:
 #endif
     case __NR_poll:
     case __NR_ppoll:
     case __NR_pselect6:
     case __NR_read:
     case __NR_readv:
-#if defined(__arm__)
+#if defined(__arm__) || defined(__mips__)
     case __NR_recv:
 #endif
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
     case __NR_recvfrom:  // Could specify source.
     case __NR_recvmsg:   // Could specify source.
 #endif
 #if defined(__i386__) || defined(__x86_64__)
     case __NR_select:
 #endif
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR__newselect:
 #endif
 #if defined(__arm__)
     case __NR_send:
 #endif
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
     case __NR_sendmsg:  // Could specify destination.
     case __NR_sendto:   // Could specify destination.
 #endif
     case __NR_write:
     case __NR_writev:
       return true;
     case __NR_ioctl:  // Can be very powerful.
     case __NR_pread64:
     case __NR_preadv:
     case __NR_pwrite64:
     case __NR_pwritev:
     case __NR_recvmmsg:  // Could specify source.
     case __NR_sendfile:
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_sendfile64:
 #endif
     case __NR_sendmmsg:  // Could specify destination.
     case __NR_splice:
     case __NR_tee:
     case __NR_vmsplice:
     default:
       return false;
   }
 }
@@ skipping 10 matching lines @@
   }
 }
 
 bool SyscallSets::IsAllowedBasicScheduler(int sysno) {
   switch (sysno) {
     case __NR_sched_yield:
     case __NR_pause:
     case __NR_nanosleep:
       return true;
     case __NR_getpriority:
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_nice:
 #endif
     case __NR_setpriority:
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsAdminOperation(int sysno) {
   switch (sysno) {
-#if defined(__i386__) || defined(__arm__)
+#if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_bdflush:
 #endif
     case __NR_kexec_load:
     case __NR_reboot:
     case __NR_setdomainname:
     case __NR_sethostname:
     case __NR_syslog:
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsKernelModule(int sysno) {
   switch (sysno) {
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_create_module:
     case __NR_get_kernel_syms:  // Should ENOSYS.
     case __NR_query_module:
 #endif
     case __NR_delete_module:
     case __NR_init_module:
       return true;
     default:
       return false;
   }
@@ skipping 10 matching lines @@
   }
 }
 
 bool SyscallSets::IsFsControl(int sysno) {
   switch (sysno) {
     case __NR_mount:
     case __NR_nfsservctl:
     case __NR_quotactl:
     case __NR_swapoff:
     case __NR_swapon:
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_umount:
 #endif
     case __NR_umount2:
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsNuma(int sysno) {
   switch (sysno) {
     case __NR_get_mempolicy:
     case __NR_getcpu:
     case __NR_mbind:
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_migrate_pages:
 #endif
     case __NR_move_pages:
     case __NR_set_mempolicy:
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsMessageQueue(int sysno) {
   switch (sysno) {
     case __NR_mq_getsetattr:
     case __NR_mq_notify:
     case __NR_mq_open:
     case __NR_mq_timedreceive:
     case __NR_mq_timedsend:
     case __NR_mq_unlink:
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsGlobalProcessEnvironment(int sysno) {
   switch (sysno) {
     case __NR_acct:  // Privileged.
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_getrlimit:
 #endif
 #if defined(__i386__) || defined(__arm__)
     case __NR_ugetrlimit:
 #endif
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_ulimit:
 #endif
     case __NR_getrusage:
     case __NR_personality:  // Can change its personality as well.
     case __NR_prlimit64:    // Like setrlimit / getrlimit.
     case __NR_setrlimit:
     case __NR_times:
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsDebug(int sysno) {
   switch (sysno) {
     case __NR_ptrace:
     case __NR_process_vm_readv:
     case __NR_process_vm_writev:
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_kcmp:
 #endif
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsGlobalSystemStatus(int sysno) {
   switch (sysno) {
@@ skipping 82 matching lines @@
     case __NR_msgget:
     case __NR_msgrcv:
     case __NR_msgsnd:
       return true;
     default:
       return false;
   }
 }
 #endif
 
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
 // Big system V multiplexing system call.
 bool SyscallSets::IsSystemVIpc(int sysno) {
   switch (sysno) {
     case __NR_ipc:
       return true;
     default:
       return false;
   }
 }
 #endif
 
 bool SyscallSets::IsAnySystemV(int sysno) {
 #if defined(__x86_64__) || defined(__arm__)
   return IsSystemVMessageQueue(sysno) || IsSystemVSemaphores(sysno) ||
          IsSystemVSharedMemory(sysno);
-#elif defined(__i386__)
+#elif defined(__i386__) || defined(__mips__)
   return IsSystemVIpc(sysno);
 #endif
 }
 
 bool SyscallSets::IsAdvancedScheduler(int sysno) {
   switch (sysno) {
     case __NR_ioprio_get:  // IO scheduler.
     case __NR_ioprio_set:
     case __NR_sched_get_priority_max:
     case __NR_sched_get_priority_min:
@@ skipping 28 matching lines @@
     case __NR_fanotify_mark:
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsTimer(int sysno) {
   switch (sysno) {
     case __NR_getitimer:
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_alarm:
 #endif
     case __NR_setitimer:
       return true;
     default:
       return false;
   }
 }
 
 bool SyscallSets::IsAdvancedTimer(int sysno) {
@@ skipping 35 matching lines @@
 // Various system calls that need to be researched.
 // TODO(jln): classify this better.
 bool SyscallSets::IsMisc(int sysno) {
   switch (sysno) {
     case __NR_name_to_handle_at:
     case __NR_open_by_handle_at:
     case __NR_perf_event_open:
     case __NR_syncfs:
     case __NR_vhangup:
 // The system calls below are not implemented.
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_afs_syscall:
 #endif
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_break:
 #endif
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_getpmsg:
 #endif
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_gtty:
     case __NR_idle:
     case __NR_lock:
     case __NR_mpx:
     case __NR_prof:
     case __NR_profil:
 #endif
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
     case __NR_putpmsg:
 #endif
 #if defined(__x86_64__)
     case __NR_security:
 #endif
-#if defined(__i386__)
+#if defined(__i386__) || defined(__mips__)
     case __NR_stty:
 #endif
 #if defined(__x86_64__)
     case __NR_tuxcall:
 #endif
     case __NR_vserver:
       return true;
     default:
       return false;
   }
@@ skipping 18 matching lines @@
     case __ARM_NR_set_tls:
     case __ARM_NR_usr26:
     case __ARM_NR_usr32:
       return true;
     default:
       return false;
   }
 }
 #endif  // defined(__arm__)
 
+#if defined(__mips__)
+bool SyscallSets::IsMipsPrivate(int sysno) {
+  switch (sysno) {
+    case __NR_cacheflush:
+    case __NR_cachectl:
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool SyscallSets::IsMipsMisc(int sysno) {
+  switch (sysno) {
+    case __NR_sysmips:
+    case __NR_unused150:
+      return true;
+    default:
+      return false;
+  }
+}
+#endif  // defined(__mips__)
 }  // namespace sandbox.