1 files changed, 59 insertions, 21 deletions
diff --git a/vendor/github.com/seccomp/libseccomp-golang/seccomp.go b/vendor/github.com/seccomp/libseccomp-golang/seccomp.go
index a62741814..53bcb024d 100644
--- a/vendor/github.com/seccomp/libseccomp-golang/seccomp.go
+++ b/vendor/github.com/seccomp/libseccomp-golang/seccomp.go
@@ -43,7 +43,7 @@ func (e VersionError) Error() string {
 	if e.minimum != "" {
 		format += e.minimum + ": "
 	} else {
-		format += "2.2.0: "
+		format += "2.1.0: "
 	}
 	format += "detected %d.%d.%d"
 	return fmt.Sprintf(format, verMajor, verMinor, verMicro)
@@ -76,8 +76,8 @@ type ScmpSyscall int32
 
 const (
 	// Valid architectures recognized by libseccomp
-	// PowerPC and S390(x) architectures are unavailable below library version
-	// v2.3.0 and will returns errors if used with incompatible libraries
+	// ARM64 and all MIPS architectures are unsupported by versions of the
+	// library before v2.2 and will return errors if used
 
 	// ArchInvalid is a placeholder to ensure uninitialized ScmpArch
 	// variables are invalid
@@ -211,7 +211,7 @@ func GetArchFromString(arch string) (ScmpArch, error) {
 	case "s390x":
 		return ArchS390X, nil
 	default:
-		return ArchInvalid, fmt.Errorf("cannot convert unrecognized string %q", arch)
+		return ArchInvalid, fmt.Errorf("cannot convert unrecognized string %s", arch)
 	}
 }
 
@@ -255,7 +255,7 @@ func (a ScmpArch) String() string {
 	case ArchInvalid:
 		return "Invalid architecture"
 	default:
-		return fmt.Sprintf("Unknown architecture %#x", uint(a))
+		return "Unknown architecture"
 	}
 }
 
@@ -279,7 +279,7 @@ func (a ScmpCompareOp) String() string {
 	case CompareInvalid:
 		return "Invalid comparison operator"
 	default:
-		return fmt.Sprintf("Unrecognized comparison operator %#x", uint(a))
+		return "Unrecognized comparison operator"
 	}
 }
 
@@ -298,7 +298,7 @@ func (a ScmpAction) String() string {
 	case ActAllow:
 		return "Action: Allow system call"
 	default:
-		return fmt.Sprintf("Unrecognized Action %#x", uint(a))
+		return "Unrecognized Action"
 	}
 }
 
@@ -324,7 +324,7 @@ func (a ScmpAction) GetReturnCode() int16 {
 // GetLibraryVersion returns the version of the library the bindings are built
 // against.
 // The version is formatted as follows: Major.Minor.Micro
-func GetLibraryVersion() (major, minor, micro uint) {
+func GetLibraryVersion() (major, minor, micro int) {
 	return verMajor, verMinor, verMicro
 }
 
@@ -350,7 +350,7 @@ func (s ScmpSyscall) GetNameByArch(arch ScmpArch) (string, error) {
 
 	cString := C.seccomp_syscall_resolve_num_arch(arch.toNative(), C.int(s))
 	if cString == nil {
-		return "", fmt.Errorf("could not resolve syscall name for %#x", int32(s))
+		return "", fmt.Errorf("could not resolve syscall name")
 	}
 	defer C.free(unsafe.Pointer(cString))
 
@@ -373,7 +373,7 @@ func GetSyscallFromName(name string) (ScmpSyscall, error) {
 
 	result := C.seccomp_syscall_resolve_name(cString)
 	if result == scmpError {
-		return 0, fmt.Errorf("could not resolve name to syscall: %q", name)
+		return 0, fmt.Errorf("could not resolve name to syscall")
 	}
 
 	return ScmpSyscall(result), nil
@@ -397,7 +397,7 @@ func GetSyscallFromNameByArch(name string, arch ScmpArch) (ScmpSyscall, error) {
 
 	result := C.seccomp_syscall_resolve_name_arch(arch.toNative(), cString)
 	if result == scmpError {
-		return 0, fmt.Errorf("could not resolve name to syscall: %q on %v", name, arch)
+		return 0, fmt.Errorf("could not resolve name to syscall")
 	}
 
 	return ScmpSyscall(result), nil
@@ -426,9 +426,9 @@ func MakeCondition(arg uint, comparison ScmpCompareOp, values ...uint64) (ScmpCo
 	if comparison == CompareInvalid {
 		return condStruct, fmt.Errorf("invalid comparison operator")
 	} else if arg > 5 {
-		return condStruct, fmt.Errorf("syscalls only have up to 6 arguments (%d given)", arg)
+		return condStruct, fmt.Errorf("syscalls only have up to 6 arguments")
 	} else if len(values) > 2 {
-		return condStruct, fmt.Errorf("conditions can have at most 2 arguments (%d given)", len(values))
+		return condStruct, fmt.Errorf("conditions can have at most 2 arguments")
 	} else if len(values) == 0 {
 		return condStruct, fmt.Errorf("must provide at least one value to compare against")
 	}
@@ -494,13 +494,6 @@ func NewFilter(defaultAction ScmpAction) (*ScmpFilter, error) {
 	filter.valid = true
 	runtime.SetFinalizer(filter, filterFinalizer)
 
-	// Enable TSync so all goroutines will receive the same rules
-	// If the kernel does not support TSYNC, allow us to continue without error
-	if err := filter.setFilterAttr(filterAttrTsync, 0x1); err != nil && err != syscall.ENOTSUP {
-		filter.Release()
-		return nil, fmt.Errorf("could not create filter - error setting tsync bit: %v", err)
-	}
-
 	return filter, nil
 }
 
@@ -557,7 +550,7 @@ func (f *ScmpFilter) Release() {
 // The source filter src will be released as part of the process, and will no
 // longer be usable or valid after this call.
 // To be merged, filters must NOT share any architectures, and all their
-// attributes (Default Action, Bad Arch Action, and No New Privs bools)
+// attributes (Default Action, Bad Arch Action, No New Privs and TSync bools)
 // must match.
 // The filter src will be merged into the filter this is called on.
 // The architectures of the src filter not present in the destination, and all
@@ -730,6 +723,30 @@ func (f *ScmpFilter) GetNoNewPrivsBit() (bool, error) {
 	return true, nil
 }
 
+// GetTsyncBit returns whether Thread Synchronization will be enabled on the
+// filter being loaded, or an error if an issue was encountered retrieving the
+// value.
+// Thread Sync ensures that all members of the thread group of the calling
+// process will share the same Seccomp filter set.
+// Tsync is a fairly recent addition to the Linux kernel and older kernels
+// lack support. If the running kernel does not support Tsync and it is
+// requested in a filter, Libseccomp will not enable TSync support and will
+// proceed as normal.
+// This function is unavailable before v2.2 of libseccomp and will return an
+// error.
+func (f *ScmpFilter) GetTsyncBit() (bool, error) {
+	tSync, err := f.getFilterAttr(filterAttrTsync)
+	if err != nil {
+		return false, err
+	}
+
+	if tSync == 0 {
+		return false, nil
+	}
+
+	return true, nil
+}
+
 // SetBadArchAction sets the default action taken on a syscall for an
 // architecture not in the filter, or an error if an issue was encountered
 // setting the value.
@@ -756,6 +773,27 @@ func (f *ScmpFilter) SetNoNewPrivsBit(state bool) error {
 	return f.setFilterAttr(filterAttrNNP, toSet)
 }
 
+// SetTsync sets whether Thread Synchronization will be enabled on the filter
+// being loaded. Returns an error if setting Tsync failed, or the filter is
+// invalid.
+// Thread Sync ensures that all members of the thread group of the calling
+// process will share the same Seccomp filter set.
+// Tsync is a fairly recent addition to the Linux kernel and older kernels
+// lack support. If the running kernel does not support Tsync and it is
+// requested in a filter, Libseccomp will not enable TSync support and will
+// proceed as normal.
+// This function is unavailable before v2.2 of libseccomp and will return an
+// error.
+func (f *ScmpFilter) SetTsync(enable bool) error {
+	var toSet C.uint32_t = 0x0
+
+	if enable {
+		toSet = 0x1
+	}
+
+	return f.setFilterAttr(filterAttrTsync, toSet)
+}
+
 // SetSyscallPriority sets a syscall's priority.
 // This provides a hint to the filter generator in libseccomp about the
 // importance of this syscall. High-priority syscalls are placed