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-rw-r--r--runsc/boot/filter/config.go478
-rw-r--r--runsc/boot/filter/config_amd64.go4
-rw-r--r--runsc/boot/filter/config_profile.go6
-rw-r--r--runsc/boot/loader.go29
-rw-r--r--runsc/config/config.go4
-rw-r--r--runsc/config/flags.go1
-rw-r--r--runsc/fsgofer/filter/config.go154
-rw-r--r--runsc/fsgofer/filter/config_amd64.go4
-rw-r--r--runsc/specutils/seccomp/audit_amd64.go25
-rw-r--r--runsc/specutils/seccomp/audit_arm64.go25
-rw-r--r--runsc/specutils/seccomp/seccomp.go229
-rw-r--r--runsc/specutils/seccomp/seccomp_amd64_state_autogen.go5
-rw-r--r--runsc/specutils/seccomp/seccomp_arm64_state_autogen.go5
-rw-r--r--runsc/specutils/seccomp/seccomp_state_autogen.go3
-rw-r--r--runsc/specutils/specutils.go5
15 files changed, 649 insertions, 328 deletions
diff --git a/runsc/boot/filter/config.go b/runsc/boot/filter/config.go
index 149eb0b1b..4ed28b5cd 100644
--- a/runsc/boot/filter/config.go
+++ b/runsc/boot/filter/config.go
@@ -29,7 +29,7 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_CLOCK_GETTIME: {},
syscall.SYS_CLONE: []seccomp.Rule{
{
- seccomp.AllowValue(
+ seccomp.EqualTo(
syscall.CLONE_VM |
syscall.CLONE_FS |
syscall.CLONE_FILES |
@@ -42,26 +42,26 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_DUP: {},
syscall.SYS_DUP3: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.O_CLOEXEC),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.O_CLOEXEC),
},
},
syscall.SYS_EPOLL_CREATE1: {},
syscall.SYS_EPOLL_CTL: {},
syscall.SYS_EPOLL_PWAIT: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(0),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(0),
},
},
syscall.SYS_EVENTFD2: []seccomp.Rule{
{
- seccomp.AllowValue(0),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(0),
+ seccomp.EqualTo(0),
},
},
syscall.SYS_EXIT: {},
@@ -70,16 +70,16 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_FCHMOD: {},
syscall.SYS_FCNTL: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.F_GETFL),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.F_GETFL),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.F_SETFL),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.F_SETFL),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.F_GETFD),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.F_GETFD),
},
},
syscall.SYS_FSTAT: {},
@@ -87,52 +87,52 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_FTRUNCATE: {},
syscall.SYS_FUTEX: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(linux.FUTEX_WAIT | linux.FUTEX_PRIVATE_FLAG),
- seccomp.AllowAny{},
- seccomp.AllowAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(linux.FUTEX_WAIT | linux.FUTEX_PRIVATE_FLAG),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(linux.FUTEX_WAKE | linux.FUTEX_PRIVATE_FLAG),
- seccomp.AllowAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(linux.FUTEX_WAKE | linux.FUTEX_PRIVATE_FLAG),
+ seccomp.MatchAny{},
},
// Non-private variants are included for flipcall support. They are otherwise
// unncessary, as the sentry will use only private futexes internally.
{
- seccomp.AllowAny{},
- seccomp.AllowValue(linux.FUTEX_WAIT),
- seccomp.AllowAny{},
- seccomp.AllowAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(linux.FUTEX_WAIT),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(linux.FUTEX_WAKE),
- seccomp.AllowAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(linux.FUTEX_WAKE),
+ seccomp.MatchAny{},
},
},
syscall.SYS_GETPID: {},
unix.SYS_GETRANDOM: {},
syscall.SYS_GETSOCKOPT: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_DOMAIN),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_DOMAIN),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_TYPE),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_TYPE),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_ERROR),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_ERROR),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_SNDBUF),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_SNDBUF),
},
},
syscall.SYS_GETTID: {},
@@ -141,34 +141,34 @@ var allowedSyscalls = seccomp.SyscallRules{
// setting/getting termios and winsize.
syscall.SYS_IOCTL: []seccomp.Rule{
{
- seccomp.AllowAny{}, /* fd */
- seccomp.AllowValue(linux.TCGETS),
- seccomp.AllowAny{}, /* termios struct */
+ seccomp.MatchAny{}, /* fd */
+ seccomp.EqualTo(linux.TCGETS),
+ seccomp.MatchAny{}, /* termios struct */
},
{
- seccomp.AllowAny{}, /* fd */
- seccomp.AllowValue(linux.TCSETS),
- seccomp.AllowAny{}, /* termios struct */
+ seccomp.MatchAny{}, /* fd */
+ seccomp.EqualTo(linux.TCSETS),
+ seccomp.MatchAny{}, /* termios struct */
},
{
- seccomp.AllowAny{}, /* fd */
- seccomp.AllowValue(linux.TCSETSF),
- seccomp.AllowAny{}, /* termios struct */
+ seccomp.MatchAny{}, /* fd */
+ seccomp.EqualTo(linux.TCSETSF),
+ seccomp.MatchAny{}, /* termios struct */
},
{
- seccomp.AllowAny{}, /* fd */
- seccomp.AllowValue(linux.TCSETSW),
- seccomp.AllowAny{}, /* termios struct */
+ seccomp.MatchAny{}, /* fd */
+ seccomp.EqualTo(linux.TCSETSW),
+ seccomp.MatchAny{}, /* termios struct */
},
{
- seccomp.AllowAny{}, /* fd */
- seccomp.AllowValue(linux.TIOCSWINSZ),
- seccomp.AllowAny{}, /* winsize struct */
+ seccomp.MatchAny{}, /* fd */
+ seccomp.EqualTo(linux.TIOCSWINSZ),
+ seccomp.MatchAny{}, /* winsize struct */
},
{
- seccomp.AllowAny{}, /* fd */
- seccomp.AllowValue(linux.TIOCGWINSZ),
- seccomp.AllowAny{}, /* winsize struct */
+ seccomp.MatchAny{}, /* fd */
+ seccomp.EqualTo(linux.TIOCGWINSZ),
+ seccomp.MatchAny{}, /* winsize struct */
},
},
syscall.SYS_LSEEK: {},
@@ -182,46 +182,46 @@ var allowedSyscalls = seccomp.SyscallRules{
// TODO(b/148688965): Remove once this is gone from Go.
syscall.SYS_MLOCK: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(4096),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4096),
},
},
syscall.SYS_MMAP: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MAP_SHARED),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MAP_SHARED),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MAP_PRIVATE),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MAP_PRIVATE),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS | syscall.MAP_STACK),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS | syscall.MAP_STACK),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS | syscall.MAP_NORESERVE),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS | syscall.MAP_NORESERVE),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.PROT_WRITE | syscall.PROT_READ),
- seccomp.AllowValue(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS | syscall.MAP_FIXED),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.PROT_WRITE | syscall.PROT_READ),
+ seccomp.EqualTo(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS | syscall.MAP_FIXED),
},
},
syscall.SYS_MPROTECT: {},
@@ -237,32 +237,32 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_READ: {},
syscall.SYS_RECVMSG: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MSG_DONTWAIT | syscall.MSG_TRUNC),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MSG_DONTWAIT | syscall.MSG_TRUNC),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MSG_DONTWAIT | syscall.MSG_TRUNC | syscall.MSG_PEEK),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MSG_DONTWAIT | syscall.MSG_TRUNC | syscall.MSG_PEEK),
},
},
syscall.SYS_RECVMMSG: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(fdbased.MaxMsgsPerRecv),
- seccomp.AllowValue(syscall.MSG_DONTWAIT),
- seccomp.AllowValue(0),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(fdbased.MaxMsgsPerRecv),
+ seccomp.EqualTo(syscall.MSG_DONTWAIT),
+ seccomp.EqualTo(0),
},
},
unix.SYS_SENDMMSG: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MSG_DONTWAIT),
- seccomp.AllowValue(0),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MSG_DONTWAIT),
+ seccomp.EqualTo(0),
},
},
syscall.SYS_RESTART_SYSCALL: {},
@@ -272,49 +272,49 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_SCHED_YIELD: {},
syscall.SYS_SENDMSG: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MSG_DONTWAIT | syscall.MSG_NOSIGNAL),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MSG_DONTWAIT | syscall.MSG_NOSIGNAL),
},
},
syscall.SYS_SETITIMER: {},
syscall.SYS_SHUTDOWN: []seccomp.Rule{
// Used by fs/host to shutdown host sockets.
- {seccomp.AllowAny{}, seccomp.AllowValue(syscall.SHUT_RD)},
- {seccomp.AllowAny{}, seccomp.AllowValue(syscall.SHUT_WR)},
+ {seccomp.MatchAny{}, seccomp.EqualTo(syscall.SHUT_RD)},
+ {seccomp.MatchAny{}, seccomp.EqualTo(syscall.SHUT_WR)},
// Used by unet to shutdown connections.
- {seccomp.AllowAny{}, seccomp.AllowValue(syscall.SHUT_RDWR)},
+ {seccomp.MatchAny{}, seccomp.EqualTo(syscall.SHUT_RDWR)},
},
syscall.SYS_SIGALTSTACK: {},
unix.SYS_STATX: {},
syscall.SYS_SYNC_FILE_RANGE: {},
syscall.SYS_TEE: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(1), /* len */
- seccomp.AllowValue(unix.SPLICE_F_NONBLOCK), /* flags */
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(1), /* len */
+ seccomp.EqualTo(unix.SPLICE_F_NONBLOCK), /* flags */
},
},
syscall.SYS_TGKILL: []seccomp.Rule{
{
- seccomp.AllowValue(uint64(os.Getpid())),
+ seccomp.EqualTo(uint64(os.Getpid())),
},
},
syscall.SYS_UTIMENSAT: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(0), /* null pathname */
- seccomp.AllowAny{},
- seccomp.AllowValue(0), /* flags */
+ seccomp.MatchAny{},
+ seccomp.EqualTo(0), /* null pathname */
+ seccomp.MatchAny{},
+ seccomp.EqualTo(0), /* flags */
},
},
syscall.SYS_WRITE: {},
// For rawfile.NonBlockingWriteIovec.
syscall.SYS_WRITEV: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
seccomp.GreaterThan(0),
},
},
@@ -325,10 +325,10 @@ func hostInetFilters() seccomp.SyscallRules {
return seccomp.SyscallRules{
syscall.SYS_ACCEPT4: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
},
},
syscall.SYS_BIND: {},
@@ -337,84 +337,84 @@ func hostInetFilters() seccomp.SyscallRules {
syscall.SYS_GETSOCKNAME: {},
syscall.SYS_GETSOCKOPT: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IP),
- seccomp.AllowValue(syscall.IP_TOS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IP),
+ seccomp.EqualTo(syscall.IP_TOS),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IP),
- seccomp.AllowValue(syscall.IP_RECVTOS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IP),
+ seccomp.EqualTo(syscall.IP_RECVTOS),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IPV6),
- seccomp.AllowValue(syscall.IPV6_TCLASS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IPV6),
+ seccomp.EqualTo(syscall.IPV6_TCLASS),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IPV6),
- seccomp.AllowValue(syscall.IPV6_RECVTCLASS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IPV6),
+ seccomp.EqualTo(syscall.IPV6_RECVTCLASS),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IPV6),
- seccomp.AllowValue(syscall.IPV6_V6ONLY),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IPV6),
+ seccomp.EqualTo(syscall.IPV6_V6ONLY),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_ERROR),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_ERROR),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_KEEPALIVE),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_KEEPALIVE),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_SNDBUF),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_SNDBUF),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_RCVBUF),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_RCVBUF),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_REUSEADDR),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_REUSEADDR),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_TYPE),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_TYPE),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_LINGER),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_LINGER),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_TCP),
- seccomp.AllowValue(syscall.TCP_NODELAY),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_TCP),
+ seccomp.EqualTo(syscall.TCP_NODELAY),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_TCP),
- seccomp.AllowValue(syscall.TCP_INFO),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_TCP),
+ seccomp.EqualTo(syscall.TCP_INFO),
},
},
syscall.SYS_IOCTL: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.TIOCOUTQ),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.TIOCOUTQ),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.TIOCINQ),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.TIOCINQ),
},
},
syscall.SYS_LISTEN: {},
@@ -425,103 +425,103 @@ func hostInetFilters() seccomp.SyscallRules {
syscall.SYS_SENDTO: {},
syscall.SYS_SETSOCKOPT: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IPV6),
- seccomp.AllowValue(syscall.IPV6_V6ONLY),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IPV6),
+ seccomp.EqualTo(syscall.IPV6_V6ONLY),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_SNDBUF),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_SNDBUF),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_RCVBUF),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_RCVBUF),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_REUSEADDR),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_REUSEADDR),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_TCP),
- seccomp.AllowValue(syscall.TCP_NODELAY),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_TCP),
+ seccomp.EqualTo(syscall.TCP_NODELAY),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IP),
- seccomp.AllowValue(syscall.IP_TOS),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IP),
+ seccomp.EqualTo(syscall.IP_TOS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IP),
- seccomp.AllowValue(syscall.IP_RECVTOS),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IP),
+ seccomp.EqualTo(syscall.IP_RECVTOS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IPV6),
- seccomp.AllowValue(syscall.IPV6_TCLASS),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IPV6),
+ seccomp.EqualTo(syscall.IPV6_TCLASS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_IPV6),
- seccomp.AllowValue(syscall.IPV6_RECVTCLASS),
- seccomp.AllowAny{},
- seccomp.AllowValue(4),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_IPV6),
+ seccomp.EqualTo(syscall.IPV6_RECVTCLASS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4),
},
},
syscall.SYS_SHUTDOWN: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SHUT_RD),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SHUT_RD),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SHUT_WR),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SHUT_WR),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SHUT_RDWR),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SHUT_RDWR),
},
},
syscall.SYS_SOCKET: []seccomp.Rule{
{
- seccomp.AllowValue(syscall.AF_INET),
- seccomp.AllowValue(syscall.SOCK_STREAM | syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(syscall.AF_INET),
+ seccomp.EqualTo(syscall.SOCK_STREAM | syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
+ seccomp.EqualTo(0),
},
{
- seccomp.AllowValue(syscall.AF_INET),
- seccomp.AllowValue(syscall.SOCK_DGRAM | syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(syscall.AF_INET),
+ seccomp.EqualTo(syscall.SOCK_DGRAM | syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
+ seccomp.EqualTo(0),
},
{
- seccomp.AllowValue(syscall.AF_INET6),
- seccomp.AllowValue(syscall.SOCK_STREAM | syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(syscall.AF_INET6),
+ seccomp.EqualTo(syscall.SOCK_STREAM | syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
+ seccomp.EqualTo(0),
},
{
- seccomp.AllowValue(syscall.AF_INET6),
- seccomp.AllowValue(syscall.SOCK_DGRAM | syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(syscall.AF_INET6),
+ seccomp.EqualTo(syscall.SOCK_DGRAM | syscall.SOCK_NONBLOCK | syscall.SOCK_CLOEXEC),
+ seccomp.EqualTo(0),
},
},
syscall.SYS_WRITEV: {},
@@ -532,20 +532,20 @@ func controlServerFilters(fd int) seccomp.SyscallRules {
return seccomp.SyscallRules{
syscall.SYS_ACCEPT: []seccomp.Rule{
{
- seccomp.AllowValue(fd),
+ seccomp.EqualTo(fd),
},
},
syscall.SYS_LISTEN: []seccomp.Rule{
{
- seccomp.AllowValue(fd),
- seccomp.AllowValue(16 /* unet.backlog */),
+ seccomp.EqualTo(fd),
+ seccomp.EqualTo(16 /* unet.backlog */),
},
},
syscall.SYS_GETSOCKOPT: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.SOL_SOCKET),
- seccomp.AllowValue(syscall.SO_PEERCRED),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.SOL_SOCKET),
+ seccomp.EqualTo(syscall.SO_PEERCRED),
},
},
}
diff --git a/runsc/boot/filter/config_amd64.go b/runsc/boot/filter/config_amd64.go
index 5335ff82c..9b1799416 100644
--- a/runsc/boot/filter/config_amd64.go
+++ b/runsc/boot/filter/config_amd64.go
@@ -25,7 +25,7 @@ import (
func init() {
allowedSyscalls[syscall.SYS_ARCH_PRCTL] = append(allowedSyscalls[syscall.SYS_ARCH_PRCTL],
- seccomp.Rule{seccomp.AllowValue(linux.ARCH_GET_FS)},
- seccomp.Rule{seccomp.AllowValue(linux.ARCH_SET_FS)},
+ seccomp.Rule{seccomp.EqualTo(linux.ARCH_GET_FS)},
+ seccomp.Rule{seccomp.EqualTo(linux.ARCH_SET_FS)},
)
}
diff --git a/runsc/boot/filter/config_profile.go b/runsc/boot/filter/config_profile.go
index 194952a7b..7b8669595 100644
--- a/runsc/boot/filter/config_profile.go
+++ b/runsc/boot/filter/config_profile.go
@@ -25,9 +25,9 @@ func profileFilters() seccomp.SyscallRules {
return seccomp.SyscallRules{
syscall.SYS_OPENAT: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.O_RDONLY | syscall.O_LARGEFILE | syscall.O_CLOEXEC),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.O_RDONLY | syscall.O_LARGEFILE | syscall.O_CLOEXEC),
},
},
}
diff --git a/runsc/boot/loader.go b/runsc/boot/loader.go
index a136da21a..4940ea96a 100644
--- a/runsc/boot/loader.go
+++ b/runsc/boot/loader.go
@@ -27,6 +27,7 @@ import (
specs "github.com/opencontainers/runtime-spec/specs-go"
"golang.org/x/sys/unix"
"gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/bpf"
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/cpuid"
"gvisor.dev/gvisor/pkg/fd"
@@ -70,6 +71,7 @@ import (
"gvisor.dev/gvisor/runsc/boot/pprof"
"gvisor.dev/gvisor/runsc/config"
"gvisor.dev/gvisor/runsc/specutils"
+ "gvisor.dev/gvisor/runsc/specutils/seccomp"
// Include supported socket providers.
"gvisor.dev/gvisor/pkg/sentry/socket/hostinet"
@@ -507,6 +509,7 @@ func createMemoryFile() (*pgalloc.MemoryFile, error) {
return mf, nil
}
+// installSeccompFilters installs sandbox seccomp filters with the host.
func (l *Loader) installSeccompFilters() error {
if l.root.conf.DisableSeccomp {
filter.Report("syscall filter is DISABLED. Running in less secure mode.")
@@ -577,6 +580,7 @@ func (l *Loader) run() error {
if _, err := l.createContainerProcess(true, l.sandboxID, &l.root, ep); err != nil {
return err
}
+
}
ep.tg = l.k.GlobalInit()
@@ -764,6 +768,31 @@ func (l *Loader) createContainerProcess(root bool, cid string, info *containerIn
}
}
+ // Install seccomp filters with the new task if there are any.
+ if info.conf.OCISeccomp {
+ if info.spec.Linux != nil && info.spec.Linux.Seccomp != nil {
+ program, err := seccomp.BuildProgram(info.spec.Linux.Seccomp)
+ if err != nil {
+ return nil, fmt.Errorf("building seccomp program: %v", err)
+ }
+
+ if log.IsLogging(log.Debug) {
+ out, _ := bpf.DecodeProgram(program)
+ log.Debugf("Installing OCI seccomp filters\nProgram:\n%s", out)
+ }
+
+ task := tg.Leader()
+ // NOTE: It seems Flags are ignored by runc so we ignore them too.
+ if err := task.AppendSyscallFilter(program, true); err != nil {
+ return nil, fmt.Errorf("appending seccomp filters: %v", err)
+ }
+ }
+ } else {
+ if info.spec.Linux != nil && info.spec.Linux.Seccomp != nil {
+ log.Warningf("Seccomp spec is being ignored")
+ }
+ }
+
return tg, nil
}
diff --git a/runsc/config/config.go b/runsc/config/config.go
index df134bb2f..f30f79f68 100644
--- a/runsc/config/config.go
+++ b/runsc/config/config.go
@@ -157,8 +157,12 @@ type Config struct {
// Enables FUSE usage.
FUSE bool `flag:"fuse"`
+ // Allows overriding of flags in OCI annotations.
AllowFlagOverride bool `flag:"allow-flag-override"`
+ // Enables seccomp inside the sandbox.
+ OCISeccomp bool `flag:"oci-seccomp"`
+
// TestOnlyAllowRunAsCurrentUserWithoutChroot should only be used in
// tests. It allows runsc to start the sandbox process as the current
// user, and without chrooting the sandbox process. This can be
diff --git a/runsc/config/flags.go b/runsc/config/flags.go
index eff46e938..a5f25cfa2 100644
--- a/runsc/config/flags.go
+++ b/runsc/config/flags.go
@@ -63,6 +63,7 @@ func RegisterFlags() {
flag.Bool("rootless", false, "it allows the sandbox to be started with a user that is not root. Sandbox and Gofer processes may run with same privileges as current user.")
flag.Var(leakModePtr(refs.NoLeakChecking), "ref-leak-mode", "sets reference leak check mode: disabled (default), log-names, log-traces.")
flag.Bool("cpu-num-from-quota", false, "set cpu number to cpu quota (least integer greater or equal to quota value, but not less than 2)")
+ flag.Bool("oci-seccomp", false, "Enables loading OCI seccomp filters inside the sandbox.")
// Flags that control sandbox runtime behavior: FS related.
flag.Var(fileAccessTypePtr(FileAccessExclusive), "file-access", "specifies which filesystem to use for the root mount: exclusive (default), shared. Volume mounts are always shared.")
diff --git a/runsc/fsgofer/filter/config.go b/runsc/fsgofer/filter/config.go
index 88814b83c..0cb9b1cae 100644
--- a/runsc/fsgofer/filter/config.go
+++ b/runsc/fsgofer/filter/config.go
@@ -29,7 +29,7 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_CLOCK_GETTIME: {},
syscall.SYS_CLONE: []seccomp.Rule{
{
- seccomp.AllowValue(
+ seccomp.EqualTo(
syscall.CLONE_VM |
syscall.CLONE_FS |
syscall.CLONE_FILES |
@@ -43,46 +43,46 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_EPOLL_CTL: {},
syscall.SYS_EPOLL_PWAIT: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(0),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(0),
},
},
syscall.SYS_EVENTFD2: []seccomp.Rule{
{
- seccomp.AllowValue(0),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(0),
+ seccomp.EqualTo(0),
},
},
syscall.SYS_EXIT: {},
syscall.SYS_EXIT_GROUP: {},
syscall.SYS_FALLOCATE: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(0),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(0),
},
},
syscall.SYS_FCHMOD: {},
syscall.SYS_FCHOWNAT: {},
syscall.SYS_FCNTL: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.F_GETFL),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.F_GETFL),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.F_SETFL),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.F_SETFL),
},
{
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.F_GETFD),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.F_GETFD),
},
// Used by flipcall.PacketWindowAllocator.Init().
{
- seccomp.AllowAny{},
- seccomp.AllowValue(unix.F_ADD_SEALS),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(unix.F_ADD_SEALS),
},
},
syscall.SYS_FSTAT: {},
@@ -91,31 +91,31 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_FTRUNCATE: {},
syscall.SYS_FUTEX: {
seccomp.Rule{
- seccomp.AllowAny{},
- seccomp.AllowValue(linux.FUTEX_WAIT | linux.FUTEX_PRIVATE_FLAG),
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(0),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(linux.FUTEX_WAIT | linux.FUTEX_PRIVATE_FLAG),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(0),
},
seccomp.Rule{
- seccomp.AllowAny{},
- seccomp.AllowValue(linux.FUTEX_WAKE | linux.FUTEX_PRIVATE_FLAG),
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(0),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(linux.FUTEX_WAKE | linux.FUTEX_PRIVATE_FLAG),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(0),
},
// Non-private futex used for flipcall.
seccomp.Rule{
- seccomp.AllowAny{},
- seccomp.AllowValue(linux.FUTEX_WAIT),
- seccomp.AllowAny{},
- seccomp.AllowAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(linux.FUTEX_WAIT),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
},
seccomp.Rule{
- seccomp.AllowAny{},
- seccomp.AllowValue(linux.FUTEX_WAKE),
- seccomp.AllowAny{},
- seccomp.AllowAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(linux.FUTEX_WAKE),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
},
},
syscall.SYS_GETDENTS64: {},
@@ -137,28 +137,28 @@ var allowedSyscalls = seccomp.SyscallRules{
// TODO(b/148688965): Remove once this is gone from Go.
syscall.SYS_MLOCK: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowValue(4096),
+ seccomp.MatchAny{},
+ seccomp.EqualTo(4096),
},
},
syscall.SYS_MMAP: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MAP_SHARED),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MAP_SHARED),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS | syscall.MAP_FIXED),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MAP_PRIVATE | syscall.MAP_ANONYMOUS | syscall.MAP_FIXED),
},
},
syscall.SYS_MPROTECT: {},
@@ -172,14 +172,14 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_READLINKAT: {},
syscall.SYS_RECVMSG: []seccomp.Rule{
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MSG_DONTWAIT | syscall.MSG_TRUNC),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MSG_DONTWAIT | syscall.MSG_TRUNC),
},
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MSG_DONTWAIT | syscall.MSG_TRUNC | syscall.MSG_PEEK),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MSG_DONTWAIT | syscall.MSG_TRUNC | syscall.MSG_PEEK),
},
},
syscall.SYS_RENAMEAT: {},
@@ -190,33 +190,33 @@ var allowedSyscalls = seccomp.SyscallRules{
syscall.SYS_SENDMSG: []seccomp.Rule{
// Used by fdchannel.Endpoint.SendFD().
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(0),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(0),
},
// Used by unet.SocketWriter.WriteVec().
{
- seccomp.AllowAny{},
- seccomp.AllowAny{},
- seccomp.AllowValue(syscall.MSG_DONTWAIT | syscall.MSG_NOSIGNAL),
+ seccomp.MatchAny{},
+ seccomp.MatchAny{},
+ seccomp.EqualTo(syscall.MSG_DONTWAIT | syscall.MSG_NOSIGNAL),
},
},
syscall.SYS_SHUTDOWN: []seccomp.Rule{
- {seccomp.AllowAny{}, seccomp.AllowValue(syscall.SHUT_RDWR)},
+ {seccomp.MatchAny{}, seccomp.EqualTo(syscall.SHUT_RDWR)},
},
syscall.SYS_SIGALTSTACK: {},
// Used by fdchannel.NewConnectedSockets().
syscall.SYS_SOCKETPAIR: {
{
- seccomp.AllowValue(syscall.AF_UNIX),
- seccomp.AllowValue(syscall.SOCK_SEQPACKET | syscall.SOCK_CLOEXEC),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(syscall.AF_UNIX),
+ seccomp.EqualTo(syscall.SOCK_SEQPACKET | syscall.SOCK_CLOEXEC),
+ seccomp.EqualTo(0),
},
},
syscall.SYS_SYMLINKAT: {},
syscall.SYS_TGKILL: []seccomp.Rule{
{
- seccomp.AllowValue(uint64(os.Getpid())),
+ seccomp.EqualTo(uint64(os.Getpid())),
},
},
syscall.SYS_UNLINKAT: {},
@@ -227,24 +227,24 @@ var allowedSyscalls = seccomp.SyscallRules{
var udsSyscalls = seccomp.SyscallRules{
syscall.SYS_SOCKET: []seccomp.Rule{
{
- seccomp.AllowValue(syscall.AF_UNIX),
- seccomp.AllowValue(syscall.SOCK_STREAM),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(syscall.AF_UNIX),
+ seccomp.EqualTo(syscall.SOCK_STREAM),
+ seccomp.EqualTo(0),
},
{
- seccomp.AllowValue(syscall.AF_UNIX),
- seccomp.AllowValue(syscall.SOCK_DGRAM),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(syscall.AF_UNIX),
+ seccomp.EqualTo(syscall.SOCK_DGRAM),
+ seccomp.EqualTo(0),
},
{
- seccomp.AllowValue(syscall.AF_UNIX),
- seccomp.AllowValue(syscall.SOCK_SEQPACKET),
- seccomp.AllowValue(0),
+ seccomp.EqualTo(syscall.AF_UNIX),
+ seccomp.EqualTo(syscall.SOCK_SEQPACKET),
+ seccomp.EqualTo(0),
},
},
syscall.SYS_CONNECT: []seccomp.Rule{
{
- seccomp.AllowAny{},
+ seccomp.MatchAny{},
},
},
}
diff --git a/runsc/fsgofer/filter/config_amd64.go b/runsc/fsgofer/filter/config_amd64.go
index a4b28cb8b..53506b5e1 100644
--- a/runsc/fsgofer/filter/config_amd64.go
+++ b/runsc/fsgofer/filter/config_amd64.go
@@ -25,8 +25,8 @@ import (
func init() {
allowedSyscalls[syscall.SYS_ARCH_PRCTL] = []seccomp.Rule{
- {seccomp.AllowValue(linux.ARCH_GET_FS)},
- {seccomp.AllowValue(linux.ARCH_SET_FS)},
+ {seccomp.EqualTo(linux.ARCH_GET_FS)},
+ {seccomp.EqualTo(linux.ARCH_SET_FS)},
}
allowedSyscalls[syscall.SYS_NEWFSTATAT] = []seccomp.Rule{}
diff --git a/runsc/specutils/seccomp/audit_amd64.go b/runsc/specutils/seccomp/audit_amd64.go
new file mode 100644
index 000000000..417cf4a7a
--- /dev/null
+++ b/runsc/specutils/seccomp/audit_amd64.go
@@ -0,0 +1,25 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build amd64
+
+package seccomp
+
+import (
+ "gvisor.dev/gvisor/pkg/abi/linux"
+)
+
+const (
+ nativeArchAuditNo = linux.AUDIT_ARCH_X86_64
+)
diff --git a/runsc/specutils/seccomp/audit_arm64.go b/runsc/specutils/seccomp/audit_arm64.go
new file mode 100644
index 000000000..b727ceff2
--- /dev/null
+++ b/runsc/specutils/seccomp/audit_arm64.go
@@ -0,0 +1,25 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build arm64
+
+package seccomp
+
+import (
+ "gvisor.dev/gvisor/pkg/abi/linux"
+)
+
+const (
+ nativeArchAuditNo = linux.AUDIT_ARCH_AARCH64
+)
diff --git a/runsc/specutils/seccomp/seccomp.go b/runsc/specutils/seccomp/seccomp.go
new file mode 100644
index 000000000..5932f7a41
--- /dev/null
+++ b/runsc/specutils/seccomp/seccomp.go
@@ -0,0 +1,229 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package seccomp implements some features of libseccomp in order to support
+// OCI.
+package seccomp
+
+import (
+ "fmt"
+ "syscall"
+
+ specs "github.com/opencontainers/runtime-spec/specs-go"
+ "gvisor.dev/gvisor/pkg/abi/linux"
+ "gvisor.dev/gvisor/pkg/bpf"
+ "gvisor.dev/gvisor/pkg/log"
+ "gvisor.dev/gvisor/pkg/seccomp"
+ "gvisor.dev/gvisor/pkg/sentry/kernel"
+ slinux "gvisor.dev/gvisor/pkg/sentry/syscalls/linux"
+)
+
+var (
+ killThreadAction = linux.SECCOMP_RET_KILL_THREAD
+ trapAction = linux.SECCOMP_RET_TRAP
+ // runc always returns EPERM as the errorcode for SECCOMP_RET_ERRNO
+ errnoAction = linux.SECCOMP_RET_ERRNO.WithReturnCode(uint16(syscall.EPERM))
+ // runc always returns EPERM as the errorcode for SECCOMP_RET_TRACE
+ traceAction = linux.SECCOMP_RET_TRACE.WithReturnCode(uint16(syscall.EPERM))
+ allowAction = linux.SECCOMP_RET_ALLOW
+)
+
+// BuildProgram generates a bpf program based on the given OCI seccomp
+// config.
+func BuildProgram(s *specs.LinuxSeccomp) (bpf.Program, error) {
+ defaultAction, err := convertAction(s.DefaultAction)
+ if err != nil {
+ return bpf.Program{}, fmt.Errorf("secomp default action: %w", err)
+ }
+ ruleset, err := convertRules(s)
+ if err != nil {
+ return bpf.Program{}, fmt.Errorf("invalid seccomp rules: %w", err)
+ }
+
+ instrs, err := seccomp.BuildProgram(ruleset, defaultAction, killThreadAction)
+ if err != nil {
+ return bpf.Program{}, fmt.Errorf("building seccomp program: %w", err)
+ }
+
+ program, err := bpf.Compile(instrs)
+ if err != nil {
+ return bpf.Program{}, fmt.Errorf("compiling seccomp program: %w", err)
+ }
+
+ return program, nil
+}
+
+// lookupSyscallNo gets the syscall number for the syscall with the given name
+// for the given architecture.
+func lookupSyscallNo(arch uint32, name string) (uint32, error) {
+ var table *kernel.SyscallTable
+ switch arch {
+ case linux.AUDIT_ARCH_X86_64:
+ table = slinux.AMD64
+ case linux.AUDIT_ARCH_AARCH64:
+ table = slinux.ARM64
+ }
+ if table == nil {
+ return 0, fmt.Errorf("unsupported architecture: %d", arch)
+ }
+ n, err := table.LookupNo(name)
+ if err != nil {
+ return 0, err
+ }
+ return uint32(n), nil
+}
+
+// convertAction converts a LinuxSeccompAction to BPFAction
+func convertAction(act specs.LinuxSeccompAction) (linux.BPFAction, error) {
+ // TODO(gvisor.dev/issue/3124): Update specs package to include ActLog and ActKillProcess.
+ switch act {
+ case specs.ActKill:
+ return killThreadAction, nil
+ case specs.ActTrap:
+ return trapAction, nil
+ case specs.ActErrno:
+ return errnoAction, nil
+ case specs.ActTrace:
+ return traceAction, nil
+ case specs.ActAllow:
+ return allowAction, nil
+ default:
+ return 0, fmt.Errorf("invalid action: %v", act)
+ }
+}
+
+// convertRules converts OCI linux seccomp rules into RuleSets that can be used by
+// the seccomp package to build a seccomp program.
+func convertRules(s *specs.LinuxSeccomp) ([]seccomp.RuleSet, error) {
+ // NOTE: Architectures are only really relevant when calling 32bit syscalls
+ // on a 64bit system. Since we don't support that in gVisor anyway, we
+ // ignore Architectures and only test against the native architecture.
+
+ ruleset := []seccomp.RuleSet{}
+
+ for _, syscall := range s.Syscalls {
+ sysRules := seccomp.NewSyscallRules()
+
+ action, err := convertAction(syscall.Action)
+ if err != nil {
+ return nil, err
+ }
+
+ // Args
+ rules, err := convertArgs(syscall.Args)
+ if err != nil {
+ return nil, err
+ }
+
+ for _, name := range syscall.Names {
+ syscallNo, err := lookupSyscallNo(nativeArchAuditNo, name)
+ if err != nil {
+ // If there is an error looking up the syscall number, assume it is
+ // not supported on this architecture and ignore it. This is, for
+ // better or worse, what runc does.
+ log.Warningf("OCI seccomp: ignoring syscall %q", name)
+ continue
+ }
+
+ for _, rule := range rules {
+ sysRules.AddRule(uintptr(syscallNo), rule)
+ }
+ }
+
+ ruleset = append(ruleset, seccomp.RuleSet{
+ Rules: sysRules,
+ Action: action,
+ })
+ }
+
+ return ruleset, nil
+}
+
+// convertArgs converts an OCI seccomp argument rule to a list of seccomp.Rule.
+func convertArgs(args []specs.LinuxSeccompArg) ([]seccomp.Rule, error) {
+ argCounts := make([]uint, 6)
+
+ for _, arg := range args {
+ if arg.Index > 6 {
+ return nil, fmt.Errorf("invalid index: %d", arg.Index)
+ }
+
+ argCounts[arg.Index]++
+ }
+
+ // NOTE: If multiple rules apply to the same argument (same index) the
+ // action is triggered if any one of the rules matches (OR). If not, then
+ // all rules much match in order to trigger the action (AND). This appears to
+ // be some kind of legacy behavior of runc that nevertheless needs to be
+ // supported to maintain compatibility.
+
+ hasMultipleArgs := false
+ for _, count := range argCounts {
+ if count > 1 {
+ hasMultipleArgs = true
+ break
+ }
+ }
+
+ if hasMultipleArgs {
+ rules := []seccomp.Rule{}
+
+ // Old runc behavior - do this for compatibility.
+ // Add rules as ORs by adding separate Rules.
+ for _, arg := range args {
+ rule := seccomp.Rule{nil, nil, nil, nil, nil, nil}
+
+ if err := convertRule(arg, &rule); err != nil {
+ return nil, err
+ }
+
+ rules = append(rules, rule)
+ }
+
+ return rules, nil
+ }
+
+ // Add rules as ANDs by adding to the same Rule.
+ rule := seccomp.Rule{nil, nil, nil, nil, nil, nil}
+ for _, arg := range args {
+ if err := convertRule(arg, &rule); err != nil {
+ return nil, err
+ }
+ }
+
+ return []seccomp.Rule{rule}, nil
+}
+
+// convertRule converts and adds the arg to a rule.
+func convertRule(arg specs.LinuxSeccompArg, rule *seccomp.Rule) error {
+ switch arg.Op {
+ case specs.OpEqualTo:
+ rule[arg.Index] = seccomp.EqualTo(arg.Value)
+ case specs.OpNotEqual:
+ rule[arg.Index] = seccomp.NotEqual(arg.Value)
+ case specs.OpGreaterThan:
+ rule[arg.Index] = seccomp.GreaterThan(arg.Value)
+ case specs.OpGreaterEqual:
+ rule[arg.Index] = seccomp.GreaterThanOrEqual(arg.Value)
+ case specs.OpLessThan:
+ rule[arg.Index] = seccomp.LessThan(arg.Value)
+ case specs.OpLessEqual:
+ rule[arg.Index] = seccomp.LessThanOrEqual(arg.Value)
+ case specs.OpMaskedEqual:
+ rule[arg.Index] = seccomp.MaskedEqual(uintptr(arg.Value), uintptr(arg.ValueTwo))
+ default:
+ return fmt.Errorf("unsupported operand: %q", arg.Op)
+ }
+ return nil
+}
diff --git a/runsc/specutils/seccomp/seccomp_amd64_state_autogen.go b/runsc/specutils/seccomp/seccomp_amd64_state_autogen.go
new file mode 100644
index 000000000..27a96018b
--- /dev/null
+++ b/runsc/specutils/seccomp/seccomp_amd64_state_autogen.go
@@ -0,0 +1,5 @@
+// automatically generated by stateify.
+
+// +build amd64
+
+package seccomp
diff --git a/runsc/specutils/seccomp/seccomp_arm64_state_autogen.go b/runsc/specutils/seccomp/seccomp_arm64_state_autogen.go
new file mode 100644
index 000000000..96c64c23d
--- /dev/null
+++ b/runsc/specutils/seccomp/seccomp_arm64_state_autogen.go
@@ -0,0 +1,5 @@
+// automatically generated by stateify.
+
+// +build arm64
+
+package seccomp
diff --git a/runsc/specutils/seccomp/seccomp_state_autogen.go b/runsc/specutils/seccomp/seccomp_state_autogen.go
new file mode 100644
index 000000000..e16b5d7c2
--- /dev/null
+++ b/runsc/specutils/seccomp/seccomp_state_autogen.go
@@ -0,0 +1,3 @@
+// automatically generated by stateify.
+
+package seccomp
diff --git a/runsc/specutils/specutils.go b/runsc/specutils/specutils.go
index a2275398a..0392e3e83 100644
--- a/runsc/specutils/specutils.go
+++ b/runsc/specutils/specutils.go
@@ -111,11 +111,6 @@ func ValidateSpec(spec *specs.Spec) error {
log.Warningf("noNewPrivileges ignored. PR_SET_NO_NEW_PRIVS is assumed to always be set.")
}
- // TODO(gvisor.dev/issue/510): Apply seccomp to application inside sandbox.
- if spec.Linux != nil && spec.Linux.Seccomp != nil {
- log.Warningf("Seccomp spec is being ignored")
- }
-
if spec.Linux != nil && spec.Linux.RootfsPropagation != "" {
if err := validateRootfsPropagation(spec.Linux.RootfsPropagation); err != nil {
return err
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 13:25:25 +0000