| Value | Meaning |
|---|---|
| INVALID0 | Indicates an invalid native credential type. |
| LINUX_UCRED1 | The native credentials type is a struct ucred. |
| FREEBSD_CMSGCRED2 | The native credentials type is a struct cmsgcred. |
| OPENBSD_SOCKPEERCRED3 | The native credentials type is a struct sockpeercred. Added in 2.30. |
| SOLARIS_UCRED4 | The native credentials type is a ucred_t. Added in 2.40. |
| NETBSD_UNPCBID5 | The native credentials type is a struct unpcbid. |
Enumeration describing different kinds of native credential types.