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socket.go
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socket.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of Cilium
package api
import (
"fmt"
"os"
"os/user"
"strconv"
"github.com/sirupsen/logrus"
"github.com/cilium/cilium/pkg/logging"
"github.com/cilium/cilium/pkg/logging/logfields"
)
var log = logging.DefaultLogger.WithField(logfields.LogSubsys, "api")
// getGroupIDByName returns the group ID for the given grpName.
func getGroupIDByName(grpName string) (int, error) {
group, err := user.LookupGroup(grpName)
if err != nil {
return -1, err
}
return strconv.Atoi(group.Gid)
}
// SetDefaultPermissions sets the given socket's group to `CiliumGroupName` and
// mode to `SocketFileMode`.
func SetDefaultPermissions(socketPath string) error {
gid, err := getGroupIDByName(CiliumGroupName)
if err != nil {
log.WithError(err).WithFields(logrus.Fields{
logfields.Path: socketPath,
"group": CiliumGroupName,
}).Debug("Group not found")
} else {
if err := os.Chown(socketPath, 0, gid); err != nil {
return fmt.Errorf("failed while setting up %s's group ID"+
" in %q: %s", CiliumGroupName, socketPath, err)
}
}
if err := os.Chmod(socketPath, SocketFileMode); err != nil {
return fmt.Errorf("failed while setting up file permissions in %q: %w",
socketPath, err)
}
return nil
}