45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package sysfs
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import (
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"syscall"
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)
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// SystemCaller represents a Syscall
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type SystemCaller interface {
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Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno)
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}
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// NativeSyscall represents the native Syscall
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type NativeSyscall struct{}
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// MockSyscall represents the mock Syscall
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type MockSyscall struct {
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Impl func(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno)
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}
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var sys SystemCaller = &NativeSyscall{}
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// SetSyscall sets the Syscall implementation
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func SetSyscall(s SystemCaller) {
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sys = s
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}
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// Syscall calls either the NativeSyscall or user defined Syscall
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func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
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return sys.Syscall(trap, a1, a2, a3)
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}
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// Syscall calls syscall.Syscall
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func (sys *NativeSyscall) Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
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return syscall.Syscall(trap, a1, a2, a3)
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}
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// Syscall implements the SystemCaller interface
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func (sys *MockSyscall) Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
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if sys.Impl != nil {
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return sys.Impl(trap, a1, a2, a3)
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} else {
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return 0, 0, 0
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}
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}
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