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strmod_del(2)
NAME
  strmod_del - Deletes STREAMS modules and drivers

SYNOPSIS
  #include <sys/stream.h>
  int strmod_del (
	  dev_t devno,
	  struct streamtab *streamtab,
	  struct streamadm *streamadm);

PARAMETERS
  devno
      The device number (cdevsw slot) to use when removing a STREAMS driver.
      This parameter is ignored for modules.

  streamtab
      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).

  streamadm
      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.

DESCRIPTION
  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
  UNIX.

NOTES
  The device number can be constructed from the major number through the
  makedev  macro, which is defined in /usr/include/sys/types.h.

RETURN VALUES
  Upon successful completion, strmod_del() returns 0.  Otherwise, it returns
  one of the following values:

  [EINVAL]
    The sa_version or sa_flags fields in the streamadm structure are not set
    correctly.

  [EBUSY]
    The entry is in use and cannot be removed.

  [ENOENT]
    The entry to be removed is not found.

  -1
    The devno is out of range, or the devsw entry was not in use.

RELATED INFORMATION
  Data Structures: streamadm(4).

  Routines: strmod_add(2).

Index for Section 2

Alphabetical listing for S

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