mirror of
https://github.com/go-delve/delve.git
synced 2025-11-04 06:32:16 +08:00
8337b5a8a9
These functions don't need to be conditionally compiled and they share substanatial amounts of code in all their OS-specific versions.
37 lines
1.0 KiB
Go
37 lines
1.0 KiB
Go
package debugger
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"syscall"
|
|
)
|
|
|
|
func init() {
|
|
attachErrorMessage = attachErrorMessageLinux
|
|
}
|
|
|
|
//lint:file-ignore ST1005 errors here can be capitalized
|
|
|
|
func attachErrorMessageLinux(pid int, err error) error {
|
|
fallbackerr := fmt.Errorf("could not attach to pid %d: %s", pid, err)
|
|
if serr, ok := err.(syscall.Errno); ok {
|
|
switch serr {
|
|
case syscall.EPERM:
|
|
bs, err := ioutil.ReadFile("/proc/sys/kernel/yama/ptrace_scope")
|
|
if err == nil && len(bs) >= 1 && bs[0] != '0' {
|
|
// Yama documentation: https://www.kernel.org/doc/Documentation/security/Yama.txt
|
|
return fmt.Errorf("Could not attach to pid %d: this could be caused by a kernel security setting, try writing \"0\" to /proc/sys/kernel/yama/ptrace_scope", pid)
|
|
}
|
|
fi, err := os.Stat(fmt.Sprintf("/proc/%d", pid))
|
|
if err != nil {
|
|
return fallbackerr
|
|
}
|
|
if fi.Sys().(*syscall.Stat_t).Uid != uint32(os.Getuid()) {
|
|
return fmt.Errorf("Could not attach to pid %d: current user does not own the process", pid)
|
|
}
|
|
}
|
|
}
|
|
return fallbackerr
|
|
}
|