Tracing system calls

This section will present a pretty advanced technique that uses the syscall package and allows you to monitor the system calls executed in a Go program.

The name of the Go utility is traceSyscall.go, and it is going to be presented in five code segments. The first part of traceSyscall.go follows:

package main 
 
import ( 
    "bufio" 
    "fmt" 
    "os" 
    "os/exec" 
    "strings" 
    "syscall" 
) 
 
var maxSyscalls = 0 
 
const SYSCALLFILE = "SYSCALLS" 

You will learn more about the purpose of the SYSCALLFILE variable in a short while.

The second code segment from traceSyscall.go is the following:

func main() { 
    var SYSTEMCALLS []string 
    f, err := os.Open(SYSCALLFILE) 
    defer f.Close() 
    if err != nil { 
        fmt.Println(err) 
        return 
    } 
 
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