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, 13 insertions, 1 deletions

diff --git a/sys/ofed/include/linux/linux_compat.c b/sys/ofed/include/linux/linux_compat.c
index e8e73c065403..f67039109a09 100644
--- a/sys/ofed/include/linux/linux_compat.c
+++ b/sys/ofed/include/linux/linux_compat.c
@@ -568,11 +568,23 @@ linux_file_ioctl(struct file *fp, u_long cmd, void *data, struct ucred *cred,
 	return (error);
 }
 
+static int
+linux_file_stat(struct file *fp, struct stat *sb, struct ucred *active_cred,
+    struct thread *td)
+{
+
+	return (EOPNOTSUPP);
+}
+
 struct fileops linuxfileops = {
 	.fo_read = linux_file_read,
+	.fo_write = invfo_rdwr,
+	.fo_truncate = invfo_truncate,
+	.fo_ioctl = linux_file_ioctl,
 	.fo_poll = linux_file_poll,
+	.fo_kqfilter = invfo_kqfilter,
+	.fo_stat = linux_file_stat,
 	.fo_close = linux_file_close,
-	.fo_ioctl = linux_file_ioctl,
 	.fo_chmod = invfo_chmod,
 	.fo_chown = invfo_chown,
 	.fo_sendfile = invfo_sendfile,