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| author |   matthew <matthew@openbsd.org> | 2014-06-26 01:36:49 +0000 |
|---|---|---|
| committer | matthew <matthew@openbsd.org> | 2014-06-26 01:36:49 +0000 |
| commit | 2d49aebb6754fc1c742437d952958cf216f9bfed (patch) | |
| tree | 981dd7695fdb7857e5f2aa7ac713d68ee2309517 | |
| parent | Handle escaped back slashes and missing new lines at end of line by using (diff) | |
| download | wireguard-openbsd-2d49aebb6754fc1c742437d952958cf216f9bfed.tar.xz wireguard-openbsd-2d49aebb6754fc1c742437d952958cf216f9bfed.zip | |
Document that VSCSI_I2T is a non-blocking operation and can be
monitored with select(2).
| -rw-r--r-- | share/man/man4/vscsi.4 | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/share/man/man4/vscsi.4 b/share/man/man4/vscsi.4 index 822bdb52ab0..88e73f53022 100644 --- a/share/man/man4/vscsi.4 +++ b/share/man/man4/vscsi.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: vscsi.4,v 1.11 2014/04/22 10:25:12 dlg Exp $ +.\" $OpenBSD: vscsi.4,v 1.12 2014/06/26 01:36:49 matthew Exp $ .\" .\" Copyright (c) 2008 David Gwynne <dlg@openbsd.org> .\" @@ -14,7 +14,7 @@ .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: April 22 2014 $ +.Dd $Mdocdate: June 26 2014 $ .Dt VSCSI 4 .Os .Sh NAME @@ -43,6 +43,16 @@ them: .Bl -tag -width Ds -compact .It VSCSI_I2T (struct vscsi_ioc_i2t *) Dequeue a SCSI command. +If no SCSI commands are available to dequeue, +.Xr ioctl 2 +will fail and set +.Va errno +to +.Dv EAGAIN . +.Pp +When one or more SCSI commands are available to dequeue, +.Xr select 2 +will indicate the descriptor as ready to read. .Bd -literal -offset indent struct vscsi_ioc_i2t { int tag; |