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package define
import (
"math"
"strings"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
const (
// ExecErrorCodeGeneric is the default error code to return from an exec session if libpod failed
// prior to calling the runtime
ExecErrorCodeGeneric = 125
// ExecErrorCodeCannotInvoke is the error code to return when the runtime fails to invoke a command
// an example of this can be found by trying to execute a directory:
// `podman exec -l /etc`
ExecErrorCodeCannotInvoke = 126
// ExecErrorCodeNotFound is the error code to return when a command cannot be found
ExecErrorCodeNotFound = 127
// ErrorConmonRead is a bogus value that can neither be a valid PID or exit code. It is
// used because conmon will send a negative value when sending a PID back over a pipe FD
// to signify something went wrong in the runtime. We need to differentiate between that
// value and a failure on the podman side of reading that value. Thus, we use ErrorConmonRead
ErrorConmonRead = math.MinInt32 - 1
)
// TranslateExecErrorToExitCode takes an error and checks whether it
// has a predefined exit code associated. If so, it returns that, otherwise it returns
// the exit code originally stated in libpod.Exec()
func TranslateExecErrorToExitCode(originalEC int, err error) int {
if errors.Cause(err) == ErrOCIRuntimePermissionDenied {
return ExecErrorCodeCannotInvoke
}
if errors.Cause(err) == ErrOCIRuntimeNotFound {
return ExecErrorCodeNotFound
}
return originalEC
}
// ExitCode reads the error message when failing to executing container process
// and then returns 0 if no error, ExecErrorCodeNotFound if command does not exist, or ExecErrorCodeCannotInvoke for
// all other errors
func ExitCode(err error) int {
if err == nil {
return 0
}
e := strings.ToLower(err.Error())
logrus.Debugf("ExitCode msg: %q", e)
if strings.Contains(e, "not found") ||
strings.Contains(e, "no such file") {
return ExecErrorCodeNotFound
}
return ExecErrorCodeCannotInvoke
}
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