Mouse wrote: > In sys/sys/poll.h, I see (in 1.4T, -current according to cvsweb, and > everything I've checked in between): > > #define POLLIN 0x0001 > #define POLLPRI 0x0002 > #define POLLOUT 0x0004 > #define POLLRDNORM 0x0040 > #define POLLWRNORM POLLOUT > #define POLLRDBAND 0x0080 > #define POLLWRBAND 0x0100 > > I can understand treating POLLWRNORM as identical to POLLOUT. But why > the distinction between POLLRDNORM and POLLIN? Might anyone know the > reason and be willing to explain?
I'd hazard a guess that you'll likely not get an explanation. > ... I'd still be curious where it came from. Those answers are CVS: thoreau 55002> cvs annotate -r1.1 sys/sys/poll.h | grep define.POLL Annotations for sys/sys/poll.h *************** 1.1 (mycroft 07-Sep-96): #define POLLIN 0x0001 1.1 (mycroft 07-Sep-96): #define POLLPRI 0x0002 1.1 (mycroft 07-Sep-96): #define POLLOUT 0x0004 1.1 (mycroft 07-Sep-96): #define POLLRDNORM 0x0040 1.1 (mycroft 07-Sep-96): #define POLLWRNORM POLLOUT 1.1 (mycroft 07-Sep-96): #define POLLRDBAND 0x0080 1.1 (mycroft 07-Sep-96): #define POLLWRBAND 0x0100 1.1 (mycroft 07-Sep-96): #define POLLERR 0x0008 1.1 (mycroft 07-Sep-96): #define POLLHUP 0x0010 1.1 (mycroft 07-Sep-96): #define POLLNVAL 0x0020 thoreau 55003> cvs log -N -r1.1 sys/sys/poll.h ... ---------------------------- revision 1.1 date: 1996-09-08 03:42:49 +1000; author: mycroft; state: Exp; Definitions for poll(2). Prototype it here. ============================================================================= Cheers, Simon.
