strmod_del - Deletes STREAMS modules and drivers
int strmod_del (
struct streamtab *streamtab,
struct streamadm *streamadm);
The device number (cdevsw slot) to use when removing a STREAMS driver.
This parameter is ignored for modules.
A pointer to the streamtab structure that contains the entry points.
The actual streamtab structure has to be allocated permanently in the
driver's data space (as specified by System V Release 3.2).
A pointer to the streamadm structure that contains the administration
parameters for the STREAMS module or driver. The actual streamadm
structure is needed only for the duration of the call. It does not
have to be allocated permanently by the caller. The sa_version field
must be either OSF_STREAMS_10 or OSF_STREAMS_11, and the sa_flags field
must be either STR_IS_DEVICE or STR_IS_MODULE.
The strmod_del() interface is used to remove configured STREAMS modules and
drivers from the kernel. Specifically, it allows STREAMS drivers to remove
entry points in character device switch tables. Modules are removed from
the STREAMS modules switch.
When removing a driver only, strmod_del() takes a device number, which is
used to determine the device switch slot for the entry points.
The streamtab parameter is a pointer to a traditional (System V Release
3.2) streamtab structure. The structure contains pointers to entry points
for the module's read and write queue routines.
The streamadm parameter points to a streamadm structure. The streamadm
structure provides additional information that is required under Tru64
The device number can be constructed from the major number through the mak-
edev macro, which is defined in /usr/include/sys/types.h.
Upon successful completion, strmod_del() returns 0. Otherwise, it returns
one of the following values:
The sa_version or sa_flags fields in the streamadm structure are not set
The entry is in use and cannot be removed.
The entry to be removed is not found.
The devno is out of range, or the devsw entry was not in use.
Data Structures: streamadm(4).