* Christoph Anton Mitterer: > @@ -1437,6 +1439,12 @@ with a value greater than or equal to 200809L or > with a value greater than or equal to 700. > In glibc 2.11 and earlier, one obtains the definitions by defining > .BR _GNU_SOURCE . > +.PP > +POSIX.1-2017 uses > +.B EOPNOTSUPP > +instead of > +.B ENXIO > +to indicate that the file is a UNIX domain socket. > .SH HISTORY > .TP > .BR open () To what degree is this dependent on the file system? Does the VFS layer restrict these error codes for anything else? I don't think so. Maybe strictly speaking, the added wording is still accurate, but the conclusion that ENXIO means socket would be incorrect draw, I think. Thanks, Florian