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69 lines
1.3 KiB
69 lines
1.3 KiB
// +build darwin |
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package common |
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import ( |
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"context" |
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"os" |
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"os/exec" |
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"strings" |
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"unsafe" |
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"golang.org/x/sys/unix" |
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) |
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func DoSysctrlWithContext(ctx context.Context, mib string) ([]string, error) { |
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sysctl, err := exec.LookPath("/usr/sbin/sysctl") |
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if err != nil { |
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return []string{}, err |
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} |
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cmd := exec.CommandContext(ctx, sysctl, "-n", mib) |
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cmd.Env = getSysctrlEnv(os.Environ()) |
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out, err := cmd.Output() |
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if err != nil { |
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return []string{}, err |
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} |
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v := strings.Replace(string(out), "{ ", "", 1) |
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v = strings.Replace(string(v), " }", "", 1) |
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values := strings.Fields(string(v)) |
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return values, nil |
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} |
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func CallSyscall(mib []int32) ([]byte, uint64, error) { |
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miblen := uint64(len(mib)) |
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// get required buffer size |
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length := uint64(0) |
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_, _, err := unix.Syscall6( |
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unix.SYS___SYSCTL, |
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uintptr(unsafe.Pointer(&mib[0])), |
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uintptr(miblen), |
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0, |
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uintptr(unsafe.Pointer(&length)), |
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0, |
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0) |
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if err != 0 { |
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var b []byte |
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return b, length, err |
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} |
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if length == 0 { |
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var b []byte |
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return b, length, err |
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} |
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// get proc info itself |
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buf := make([]byte, length) |
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_, _, err = unix.Syscall6( |
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unix.SYS___SYSCTL, |
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uintptr(unsafe.Pointer(&mib[0])), |
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uintptr(miblen), |
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uintptr(unsafe.Pointer(&buf[0])), |
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uintptr(unsafe.Pointer(&length)), |
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0, |
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0) |
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if err != 0 { |
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return buf, length, err |
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} |
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return buf, length, nil |
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}
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