Garrett Wollman 1cbbd625cc Add support for poll(2) on files. vop_nopoll() now returns POLLNVAL ... if one of the new poll types is requested; hopefully this will not break any existing code. (This is done so that programs have a dependable way of determining whether a filesystem supports the extended poll types or not.) The new poll types added are: POLLWRITE - file contents may have been modified POLLNLINK - file was linked, unlinked, or renamed POLLATTRIB - file's attributes may have been changed POLLEXTEND - file was extended Note that the internal operation of poll() means that it is impossible for two processes to reliably poll for the same event (this could be fixed but may not be worth it), so it is not possible to rewrite `tail -f' to use poll at this time.		1997-12-15 03:09:59 +00:00
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deadfs	Add support for poll(2) on files. vop_nopoll() now returns POLLNVAL	1997-12-15 03:09:59 +00:00
devfs	Don't include <sys/lock.h> in headers when only `struct simplelock' is	1997-12-05 19:55:52 +00:00
fdesc	Removed unused #includes. The need for most of them went away with	1997-10-27 13:33:47 +00:00
fifofs	Fixed EOF handing.	1997-12-13 13:49:59 +00:00
kernfs	Removed unused #includes. The need for most of them went away with	1997-10-27 13:33:47 +00:00
nullfs	Fix the file leak bug. The lower layer wasn't informed the vnode was inactive	1997-10-21 21:01:34 +00:00
portal	Move the "retval" (3rd) parameter from all syscall functions and put	1997-11-06 19:29:57 +00:00
procfs	Change the ioctls for procfs around a bit; in particular, whever possible,	1997-12-13 03:13:49 +00:00
specfs	Removed unused #includes. The need for most of them went away with	1997-10-27 13:33:47 +00:00
umapfs	Fix the same leak as in nullfs. Now the lowervp is properly marked inactive.	1997-10-21 21:08:17 +00:00
union	Staticize.	1997-11-18 15:07:35 +00:00