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head/share/man/man4/unix.4
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| .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
| .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
| .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
| .\" SUCH DAMAGE. | .\" SUCH DAMAGE. | ||||
| .\" | .\" | ||||
| .\" @(#)unix.4 8.1 (Berkeley) 6/9/93 | .\" @(#)unix.4 8.1 (Berkeley) 6/9/93 | ||||
| .\" $FreeBSD$ | .\" $FreeBSD$ | ||||
| .\" | .\" | ||||
| .Dd August 19, 2018 | .Dd August 3, 2020 | ||||
| .Dt UNIX 4 | .Dt UNIX 4 | ||||
| .Os | .Os | ||||
| .Sh NAME | .Sh NAME | ||||
| .Nm unix | .Nm unix | ||||
| .Nd UNIX-domain protocol family | .Nd UNIX-domain protocol family | ||||
| .Sh SYNOPSIS | .Sh SYNOPSIS | ||||
| .In sys/types.h | .In sys/types.h | ||||
| .In sys/un.h | .In sys/un.h | ||||
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| .Fa cmcred_pid | .Fa cmcred_pid | ||||
| should not be looked up (such as via the | should not be looked up (such as via the | ||||
| .Dv KERN_PROC_PID | .Dv KERN_PROC_PID | ||||
| sysctl) for making security decisions. | sysctl) for making security decisions. | ||||
| The sending process could have exited and its process ID already been | The sending process could have exited and its process ID already been | ||||
| reused for a new process. | reused for a new process. | ||||
| .Sh SOCKET OPTIONS | .Sh SOCKET OPTIONS | ||||
| .Tn UNIX | .Tn UNIX | ||||
| domain sockets support a number of socket options which can be set with | domain sockets support a number of socket options for the options level | ||||
| .Dv SOL_LOCAL , | |||||
| which can be set with | |||||
| .Xr setsockopt 2 | .Xr setsockopt 2 | ||||
| and tested with | and tested with | ||||
| .Xr getsockopt 2 : | .Xr getsockopt 2 : | ||||
| .Bl -tag -width ".Dv LOCAL_CONNWAIT" | .Bl -tag -width ".Dv LOCAL_CONNWAIT" | ||||
| .It Dv LOCAL_CREDS | .It Dv LOCAL_CREDS | ||||
| This option may be enabled on | This option may be enabled on | ||||
| .Dv SOCK_DGRAM , | .Dv SOCK_DGRAM , | ||||
| .Dv SOCK_SEQPACKET , | .Dv SOCK_SEQPACKET , | ||||
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