| // +build freebsd |
| |
| package common |
| |
| import ( |
| "os" |
| "os/exec" |
| "strings" |
| "syscall" |
| "unsafe" |
| ) |
| |
| func DoSysctrl(mib string) ([]string, error) { |
| err := os.Setenv("LC_ALL", "C") |
| if err != nil { |
| return []string{}, err |
| } |
| sysctl, err := exec.LookPath("/sbin/sysctl") |
| if err != nil { |
| return []string{}, err |
| } |
| out, err := exec.Command(sysctl, "-n", mib).Output() |
| if err != nil { |
| return []string{}, err |
| } |
| v := strings.Replace(string(out), "{ ", "", 1) |
| v = strings.Replace(string(v), " }", "", 1) |
| values := strings.Fields(string(v)) |
| |
| return values, nil |
| } |
| |
| func CallSyscall(mib []int32) ([]byte, uint64, error) { |
| mibptr := unsafe.Pointer(&mib[0]) |
| miblen := uint64(len(mib)) |
| |
| // get required buffer size |
| length := uint64(0) |
| _, _, err := syscall.Syscall6( |
| syscall.SYS___SYSCTL, |
| uintptr(mibptr), |
| 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(mibptr), |
| uintptr(miblen), |
| uintptr(unsafe.Pointer(&buf[0])), |
| uintptr(unsafe.Pointer(&length)), |
| 0, |
| 0) |
| if err != 0 { |
| return buf, length, err |
| } |
| |
| return buf, length, nil |
| } |
