sandbox: Add Arm64 support for seccomp-BPF

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

Index: sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
diff --git a/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc b/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
index d3b9807c87c45c2becdb7f72dfca7bba8bdd95a6..400e5d740e1d212178aabaa2d1372565e2d5b7a0 100644
--- a/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
+++ b/sandbox/linux/seccomp-bpf-helpers/syscall_sets.cc
@@ -76,6 +76,7 @@ bool SyscallSets::IsUmask(int sysno) {
 // Both EPERM and ENOENT are valid errno unless otherwise noted in comment.
 bool SyscallSets::IsFileSystem(int sysno) {
   switch (sysno) {
+#if !defined(__aarch64__)
     case __NR_access:  // EPERM not a valid errno.
     case __NR_chmod:
     case __NR_chown:
@@ -83,49 +84,55 @@ bool SyscallSets::IsFileSystem(int sysno) {
     case __NR_chown32:
 #endif
     case __NR_creat:
+    case __NR_futimesat:  // Should be called utimesat ?
+    case __NR_lchown:
+    case __NR_link:
+    case __NR_lstat:  // EPERM not a valid errno.
+    case __NR_mkdir:
+    case __NR_mknod:
+    case __NR_open:
+    case __NR_readlink:  // EPERM not a valid errno.
+    case __NR_rename:
+    case __NR_rmdir:
+    case __NR_stat:  // EPERM not a valid errno.
+    case __NR_symlink:
+    case __NR_unlink:
+    case __NR_uselib:  // Neither EPERM, nor ENOENT are valid errno.
+    case __NR_ustat:   // Same as above. Deprecated.
+    case __NR_utimes:
+#endif  // !defined(__aarch64__)
+
     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__)
+#if defined(__x86_64__) || defined(__aarch64__)
     case __NR_newfstatat:  // fstatat(). EPERM not a valid errno.
 #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__) || defined(__mips__)
     case __NR_lstat64:
 #endif
-#if !defined(__mips__)
+#if defined(__i386__) || defined(__arm__) || defined(__x86_64__)
     case __NR_memfd_create:
 #endif
-    case __NR_mkdir:
     case __NR_mkdirat:
-    case __NR_mknod:
     case __NR_mknodat:
-    case __NR_open:
+#if defined(__i386__)
+    case __NR_oldlstat:
+    case __NR_oldstat:
+#endif
     case __NR_openat:
-    case __NR_readlink:  // EPERM not a valid errno.
     case __NR_readlinkat:
-    case __NR_rename:
     case __NR_renameat:
     case __NR_renameat2:
-    case __NR_rmdir:
-    case __NR_stat:  // EPERM not a valid errno.
-#if defined(__i386__)
-    case __NR_oldstat:
-#endif
 #if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_stat64:
 #endif
@@ -133,21 +140,16 @@ bool SyscallSets::IsFileSystem(int sysno) {
 #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__) || 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__) || defined(__mips__)
     case __NR_utime:
 #endif
     case __NR_utimensat:  // New.
-    case __NR_utimes:
       return true;
     default:
       return false;
@@ -181,7 +183,8 @@ bool SyscallSets::IsAllowedFileSystemAccessViaFd(int sysno) {
 #if defined(__i386__)
     case __NR_oldfstat:
 #endif
-#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_sync_file_range:  // EPERM not a valid errno.
 #elif defined(__arm__)
     case __NR_arm_sync_file_range:  // EPERM not a valid errno.
@@ -204,7 +207,9 @@ bool SyscallSets::IsDeniedFileSystemAccessViaFd(int sysno) {
 #if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_ftruncate64:
 #endif
+#if !defined(__aarch64__)
     case __NR_getdents:    // EPERM not a valid errno.
+#endif
     case __NR_getdents64:  // EPERM not a valid errno.
 #if defined(__i386__) || defined(__mips__)
     case __NR_readdir:
@@ -280,7 +285,9 @@ bool SyscallSets::IsProcessPrivilegeChange(int sysno) {
 bool SyscallSets::IsProcessGroupOrSession(int sysno) {
   switch (sysno) {
     case __NR_setpgid:
+#if !defined(__aarch64__)
     case __NR_getpgrp:
+#endif
     case __NR_setsid:
     case __NR_getpgid:
       return true;
@@ -306,7 +313,9 @@ bool SyscallSets::IsAllowedSignalHandling(int sysno) {
     case __NR_rt_sigtimedwait:
     case __NR_rt_tgsigqueueinfo:
     case __NR_sigaltstack:
+#if !defined(__aarch64__)
     case __NR_signalfd:
+#endif
     case __NR_signalfd4:
 #if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR_sigpending:
@@ -326,9 +335,12 @@ bool SyscallSets::IsAllowedOperationOnFd(int sysno) {
   switch (sysno) {
     case __NR_close:
     case __NR_dup:
+#if !defined(__aarch64__)
     case __NR_dup2:
+#endif
     case __NR_dup3:
-#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_shutdown:
 #endif
       return true;
@@ -366,7 +378,9 @@ bool SyscallSets::IsAllowedProcessStartOrDeath(int sysno) {
       return true;
     case __NR_clone:  // Should be parameter-restricted.
     case __NR_setns:  // Privileged.
+#if !defined(__aarch64__)
     case __NR_fork:
+#endif
 #if defined(__i386__) || defined(__x86_64__)
     case __NR_get_thread_area:
 #endif
@@ -375,7 +389,7 @@ bool SyscallSets::IsAllowedProcessStartOrDeath(int sysno) {
 #endif
     case __NR_set_tid_address:
     case __NR_unshare:
-#if !defined(__mips__)
+#if !defined(__mips__) && !defined(__aarch64__)
     case __NR_vfork:
 #endif
     default:
@@ -397,10 +411,12 @@ bool SyscallSets::IsAllowedFutex(int sysno) {
 
 bool SyscallSets::IsAllowedEpoll(int sysno) {
   switch (sysno) {
+#if !defined(__aarch64__)
     case __NR_epoll_create:
+    case __NR_epoll_wait:
+#endif
     case __NR_epoll_create1:
     case __NR_epoll_ctl:
-    case __NR_epoll_wait:
       return true;
     default:
 #if defined(__x86_64__)
@@ -416,11 +432,14 @@ bool SyscallSets::IsAllowedEpoll(int sysno) {
 
 bool SyscallSets::IsAllowedGetOrModifySocket(int sysno) {
   switch (sysno) {
+#if !defined(__aarch64__)
     case __NR_pipe:
+#endif
     case __NR_pipe2:
       return true;
     default:
-#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_socketpair:  // We will want to inspect its argument.
 #endif
       return false;
@@ -429,7 +448,8 @@ bool SyscallSets::IsAllowedGetOrModifySocket(int sysno) {
 
 bool SyscallSets::IsDeniedGetOrModifySocket(int sysno) {
   switch (sysno) {
-#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_accept:
     case __NR_accept4:
     case __NR_bind:
@@ -479,7 +499,8 @@ bool SyscallSets::IsAllowedAddressSpaceAccess(int sysno) {
     case __NR_madvise:
     case __NR_mincore:
     case __NR_mlockall:
-#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_mmap:
 #endif
 #if defined(__i386__) || defined(__arm__) || defined(__mips__)
@@ -509,7 +530,9 @@ bool SyscallSets::IsAllowedGeneralIo(int sysno) {
 #if defined(__i386__) || defined(__arm__) || defined(__mips__)
     case __NR__llseek:
 #endif
+#if !defined(__aarch64__)
     case __NR_poll:
+#endif
     case __NR_ppoll:
     case __NR_pselect6:
     case __NR_read:
@@ -517,7 +540,8 @@ bool SyscallSets::IsAllowedGeneralIo(int sysno) {
 #if defined(__arm__) || defined(__mips__)
     case __NR_recv:
 #endif
-#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_recvfrom:  // Could specify source.
     case __NR_recvmsg:   // Could specify source.
 #endif
@@ -530,7 +554,8 @@ bool SyscallSets::IsAllowedGeneralIo(int sysno) {
 #if defined(__arm__)
     case __NR_send:
 #endif
-#if defined(__x86_64__) || defined(__arm__) || defined(__mips__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_sendmsg:  // Could specify destination.
     case __NR_sendto:   // Could specify destination.
 #endif
@@ -580,7 +605,9 @@ bool SyscallSets::IsSeccomp(int sysno) {
 bool SyscallSets::IsAllowedBasicScheduler(int sysno) {
   switch (sysno) {
     case __NR_sched_yield:
+#if !defined(__aarch64__)
     case __NR_pause:
+#endif
     case __NR_nanosleep:
       return true;
     case __NR_getpriority:
@@ -658,7 +685,8 @@ bool SyscallSets::IsNuma(int sysno) {
     case __NR_get_mempolicy:
     case __NR_getcpu:
     case __NR_mbind:
-#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_migrate_pages:
 #endif
     case __NR_move_pages:
@@ -686,7 +714,8 @@ bool SyscallSets::IsMessageQueue(int sysno) {
 bool SyscallSets::IsGlobalProcessEnvironment(int sysno) {
   switch (sysno) {
     case __NR_acct:  // Privileged.
-#if defined(__i386__) || defined(__x86_64__) || defined(__mips__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
+    defined(__aarch64__)
     case __NR_getrlimit:
 #endif
 #if defined(__i386__) || defined(__arm__)
@@ -720,8 +749,10 @@ bool SyscallSets::IsDebug(int sysno) {
 
 bool SyscallSets::IsGlobalSystemStatus(int sysno) {
   switch (sysno) {
+#if !defined(__aarch64__)
     case __NR__sysctl:
     case __NR_sysfs:
+#endif
     case __NR_sysinfo:
     case __NR_uname:
 #if defined(__i386__)
@@ -736,7 +767,9 @@ bool SyscallSets::IsGlobalSystemStatus(int sysno) {
 
 bool SyscallSets::IsEventFd(int sysno) {
   switch (sysno) {
+#if !defined(__aarch64__)
     case __NR_eventfd:
+#endif
     case __NR_eventfd2:
       return true;
     default:
@@ -769,7 +802,7 @@ bool SyscallSets::IsKeyManagement(int sysno) {
   }
 }
 
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__)
 bool SyscallSets::IsSystemVSemaphores(int sysno) {
   switch (sysno) {
     case __NR_semctl:
@@ -783,7 +816,7 @@ bool SyscallSets::IsSystemVSemaphores(int sysno) {
 }
 #endif
 
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__)
 // These give a lot of ambient authority and bypass the setuid sandbox.
 bool SyscallSets::IsSystemVSharedMemory(int sysno) {
   switch (sysno) {
@@ -798,7 +831,7 @@ bool SyscallSets::IsSystemVSharedMemory(int sysno) {
 }
 #endif
 
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__)
 bool SyscallSets::IsSystemVMessageQueue(int sysno) {
   switch (sysno) {
     case __NR_msgctl:
@@ -825,7 +858,7 @@ bool SyscallSets::IsSystemVIpc(int sysno) {
 #endif
 
 bool SyscallSets::IsAnySystemV(int sysno) {
-#if defined(__x86_64__) || defined(__arm__)
+#if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__)
   return IsSystemVMessageQueue(sysno) || IsSystemVSemaphores(sysno) ||
          IsSystemVSharedMemory(sysno);
 #elif defined(__i386__) || defined(__mips__)
@@ -857,7 +890,9 @@ bool SyscallSets::IsAdvancedScheduler(int sysno) {
 bool SyscallSets::IsInotify(int sysno) {
   switch (sysno) {
     case __NR_inotify_add_watch:
+#if !defined(__aarch64__)
     case __NR_inotify_init:
+#endif
     case __NR_inotify_init1:
     case __NR_inotify_rm_watch:
       return true;
@@ -967,7 +1002,9 @@ bool SyscallSets::IsMisc(int sysno) {
 #if defined(__x86_64__)
     case __NR_tuxcall:
 #endif
+#if !defined(__aarch64__)
     case __NR_vserver:
+#endif
       return true;
     default:
       return false;