ext: isolate from container/std

These are too general to belong in the container package. This targets the v0.4 release to reduce the wrapper maintenance burden.

Signed-off-by: Ophestra <cat@gensokyo.uk>

1 files changed, 6 insertions, 52 deletions

diff --git a/container/std/seccomp.go b/container/std/seccomp.go
index e808e61f..55974777 100644
--- a/container/std/seccomp.go
+++ b/container/std/seccomp.go
@@ -1,34 +1,20 @@
 package std
 
-import (
-	"encoding/json"
-	"strconv"
-)
+import "hakurei.app/ext"
 
 type (
-	// ScmpUint is equivalent to C.uint.
-	//
-	// Deprecated: This type has been renamed to Uint and will be removed in 0.4.
-	ScmpUint = Uint
-	// ScmpInt is equivalent to C.int.
-	//
-	// Deprecated: This type has been renamed to Int and will be removed in 0.4.
-	ScmpInt = Int
-
-	// ScmpSyscall represents a syscall number passed to libseccomp via [NativeRule.Syscall].
-	ScmpSyscall Int
 	// ScmpErrno represents an errno value passed to libseccomp via [NativeRule.Errno].
-	ScmpErrno Int
+	ScmpErrno = ext.Int
 
 	// ScmpCompare is equivalent to enum scmp_compare;
-	ScmpCompare Uint
+	ScmpCompare = ext.Uint
 	// ScmpDatum is equivalent to scmp_datum_t.
-	ScmpDatum uint64
+	ScmpDatum = uint64
 
 	// ScmpArgCmp is equivalent to struct scmp_arg_cmp.
 	ScmpArgCmp struct {
 		// argument number, starting at 0
-		Arg Uint `json:"arg"`
+		Arg ext.Uint `json:"arg"`
 		// the comparison op, e.g. SCMP_CMP_*
 		Op ScmpCompare `json:"op"`
 
@@ -39,42 +25,10 @@ type (
 	// A NativeRule specifies an arch-specific action taken by seccomp under certain conditions.
 	NativeRule struct {
 		// Syscall is the arch-dependent syscall number to act against.
-		Syscall ScmpSyscall `json:"syscall"`
+		Syscall ext.SyscallNum `json:"syscall"`
 		// Errno is the errno value to return when the condition is satisfied.
 		Errno ScmpErrno `json:"errno"`
 		// Arg is the optional struct scmp_arg_cmp passed to libseccomp.
 		Arg *ScmpArgCmp `json:"arg,omitempty"`
 	}
 )
-
-// MarshalJSON resolves the name of [ScmpSyscall] and encodes it as a [json] string.
-// If such a name does not exist, the syscall number is encoded instead.
-func (num *ScmpSyscall) MarshalJSON() ([]byte, error) {
-	n := *num
-	for name, cur := range Syscalls() {
-		if cur == n {
-			return json.Marshal(name)
-		}
-	}
-	return json.Marshal(n)
-}
-
-// SyscallNameError is returned when trying to unmarshal an invalid syscall name into [ScmpSyscall].
-type SyscallNameError string
-
-func (e SyscallNameError) Error() string { return "invalid syscall name " + strconv.Quote(string(e)) }
-
-// UnmarshalJSON looks up the syscall number corresponding to name encoded in data
-// by calling [SyscallResolveName].
-func (num *ScmpSyscall) UnmarshalJSON(data []byte) error {
-	var name string
-	if err := json.Unmarshal(data, &name); err != nil {
-		return err
-	}
-	if n, ok := SyscallResolveName(name); !ok {
-		return SyscallNameError(name)
-	} else {
-		*num = n
-		return nil
-	}
-}