freebsd-dev/share/man/man9/devsw.9
2001-07-13 09:09:52 +00:00

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.Dd July 9, 2001
.Dt DEVSW 9
.Os
.Sh NAME
.Nm devsw
.Nd returns the
.Vt cdevsw
structure
.Sh SYNOPSIS
.In sys/conf.h
.Ft "struct cdevsw *"
.Fn devsw "dev_t dev"
.Sh DESCRIPTION
The
.Fn devsw
function returns a pointer to the
.Vt cdevsw
structure associated
with this character device ID.
If
.Fa dev->si_cdevsw
is set it is
returned; otherwise, the
.Xr major 9
offset into the
.Va cdevsw
array is returned.
.Pp
Its argument is:
.Bl -tag -width ".Fa dev"
.It Fa dev
The device whose
.Vt cdevsw
entry should be returned.
.El
.Sh RETURN VALUES
A pointer to a
.Vt cdevsw
structure.
.Sh SEE ALSO
.Xr major 9 ,
.Xr minor 9 ,
.Xr umajor 9 ,
.Xr uminor 9
.Sh AUTHORS
This man page was written by
.An Chad David Aq davidc@acns.ab.ca .