Implement SO_PEERCRED, a few more sysconf codes, and accept taking a null destination address or getting an AF_UNSPEC address.
And add a special case for Unix-domain addresses where the caller has forgotten to add 1 for the NUL terminator to fix it up, so that rustix doesn't have to be aware of this.
Implement
SO_PEERCRED, a few moresysconfcodes, andaccepttaking a null destination address or getting anAF_UNSPECaddress.And add a special case for Unix-domain addresses where the caller has forgotten to add 1 for the NUL terminator to fix it up, so that rustix doesn't have to be aware of this.