Fix various issues with invalid file operations:

- Add invfo_rdwr() (for read and write), invfo_ioctl(), invfo_poll(),
  and invfo_kqfilter() for use by file types that do not support the
  respective operations.  Home-grown versions of invfo_poll() were
  universally broken (they returned an errno value, invfo_poll()
  uses poll_no_poll() to return an appropriate event mask).  Home-grown
  ioctl routines also tended to return an incorrect errno (invfo_ioctl
  returns ENOTTY).
- Use the invfo_*() functions instead of local versions for
  unsupported file operations.
- Reorder fileops members to match the order in the structure definition
  to make it easier to spot missing members.
- Add several missing methods to linuxfileops used by the OFED shim
  layer: fo_write(), fo_truncate(), fo_kqfilter(), and fo_stat().  Most
  of these used invfo_*(), but a dummy fo_stat() implementation was
  added.

1 files changed, 5 insertions, 1 deletions

diff --git a/sys/sys/file.h b/sys/sys/file.h
index 63072e0..92f125f 100644
--- a/sys/sys/file.h
+++ b/sys/sys/file.h
@@ -231,10 +231,14 @@ int fget_write(struct thread *td, int fd, cap_rights_t *rightsp,
     struct file **fpp);
 int _fdrop(struct file *fp, struct thread *td);
 
+fo_rdwr_t	invfo_rdwr;
+fo_truncate_t	invfo_truncate;
+fo_ioctl_t	invfo_ioctl;
+fo_poll_t	invfo_poll;
+fo_kqfilter_t	invfo_kqfilter;
 fo_chmod_t	invfo_chmod;
 fo_chown_t	invfo_chown;
 fo_sendfile_t	invfo_sendfile;
-fo_truncate_t	invfo_truncate;
 
 fo_sendfile_t	vn_sendfile;
 fo_seek_t	vn_seek;