move CallSysCall to common/common_freebsd

common/common_freebsd.go

@@ -3,8 +3,10 @@
 package common
 
 import (
+	"syscall"
 	"os/exec"
 	"strings"
+	"unsafe"
 )
 
 func DoSysctrl(mib string) ([]string, error) {
@@ -18,3 +20,42 @@ func DoSysctrl(mib string) ([]string, error) {
 
 	return values, nil
 }
+
+func CallSyscall(mib []int32) ([]byte, uint64, error) {
+	miblen := uint64(len(mib))
+
+	// get required buffer size
+	length := uint64(0)
+	_, _, err := syscall.Syscall6(
+		syscall.SYS___SYSCTL,
+		uintptr(unsafe.Pointer(&mib[0])),
+		uintptr(miblen),
+		0,
+		uintptr(unsafe.Pointer(&length)),
+		0,
+		0)
+	if err != 0 {
+		var b []byte
+		return b, length, err
+	}
+	if length == 0 {
+		var b []byte
+		return b, length, err
+	}
+	// get proc info itself
+	buf := make([]byte, length)
+	_, _, err = syscall.Syscall6(
+		syscall.SYS___SYSCTL,
+		uintptr(unsafe.Pointer(&mib[0])),
+		uintptr(miblen),
+		uintptr(unsafe.Pointer(&buf[0])),
+		uintptr(unsafe.Pointer(&length)),
+		0,
+		0)
+	if err != 0 {
+		return buf, length, err
+	}
+
+	return buf, length, nil
+}
+

process/process_freebsd.go

@@ -5,7 +5,6 @@ package process
 import (
 	"bytes"
 	"encoding/binary"
-	"syscall"
 	"unsafe"
 
 	common "github.com/shirou/gopsutil/common"
@@ -200,7 +199,7 @@ func processes() ([]Process, error) {
 	results := make([]Process, 0, 50)
 
 	mib := []int32{CTLKern, KernProc, KernProcProc, 0}
-	buf, length, err := callSyscall(mib)
+	buf, length, err := common.CallSyscall(mib)
 	if err != nil {
 		return results, err
 	}
@@ -240,48 +239,10 @@ func parseKinfoProc(buf []byte) (KinfoProc, error) {
 	return k, nil
 }
 
-func callSyscall(mib []int32) ([]byte, uint64, error) {
-	miblen := uint64(len(mib))
-
-	// get required buffer size
-	length := uint64(0)
-	_, _, err := syscall.Syscall6(
-		syscall.SYS___SYSCTL,
-		uintptr(unsafe.Pointer(&mib[0])),
-		uintptr(miblen),
-		0,
-		uintptr(unsafe.Pointer(&length)),
-		0,
-		0)
-	if err != 0 {
-		var b []byte
-		return b, length, err
-	}
-	if length == 0 {
-		var b []byte
-		return b, length, err
-	}
-	// get proc info itself
-	buf := make([]byte, length)
-	_, _, err = syscall.Syscall6(
-		syscall.SYS___SYSCTL,
-		uintptr(unsafe.Pointer(&mib[0])),
-		uintptr(miblen),
-		uintptr(unsafe.Pointer(&buf[0])),
-		uintptr(unsafe.Pointer(&length)),
-		0,
-		0)
-	if err != 0 {
-		return buf, length, err
-	}
-
-	return buf, length, nil
-}
-
 func (p *Process) getKProc() (*KinfoProc, error) {
 	mib := []int32{CTLKern, KernProc, KernProcPID, p.Pid}
 
-	buf, length, err := callSyscall(mib)
+	buf, length, err := common.CallSyscall(mib)
 	if err != nil {
 		return nil, err
 	}