SVR5 and SCO OpenServer 5
copyresp(D4str)
copyresp --
STREAMS transparent ioctl copy response structure
Synopsis
#include <sys/stream.h>
#include <sys/ddi.h>
Description
The copyresp structure contains information
in response to a prior copy request
necessary to continue processing transparent ioctls.
Usage
M_IOCDATA(D7str)
messages, generated by the stream head,
contain the copyresp structure.
If an M_IOCDATA message is reused,
any unused fields in the new message should be cleared.
DDI structure definition
The DDI copyresp structure
contains the following members:
int cp_cmd;
cred_t *cp_cr;
uint_t cp_id;
caddr_t cp_rval;
mblk_t *cp_private;
ODDI structure definition
The ODDI copyresp structure
contains the following members:
int cp_cmd;
ushort cp_uid;
ushort cp_gid;
uint cp_id;
caddr_t cp_rval;
mblk_t *cp_private;
};
Structure members
cp_cmd-
the ioctl command,
copied from the
cq_cmd member of the
copyreq(D4str)
structure.
cp_cr-
contains a pointer to the user credentials.
It is copied from the
cq_cr member of the
copyreq(D4str)
structure.
(DDI only)
cp_uid-
effective UID
(ODDI only).
cp_gid-
effective GID
(ODDI only).
cp_id-
the ioctl ID,
copied from the
cq_id member of the
copyreq(D4str)
structure.
It is used to uniquely identify the ioctl
request in the stream.
cq_rval-
contains the return value from the last copy request.
If the request succeeded, it is set to 0.
Otherwise, if it is non-zero, the request failed.
On success, the module or driver
should continue processing the ioctl.
On failure, the module or driver
should abort ioctl processing and free the message.
No M_IOCNAK message need be generated.
cp_private-
copied from the
cq_private member of the
copyreq(D4str)
structure.
It is available so that the module or driver
can regain enough state information
to continue processing the ioctl request.
When the M_IOCDATA message is freed,
any message that cp_private
references is not freed by the STREAMS subsystem.
It is the responsibility of the module or driver to free it.
Hardware applicability
All
Version applicability
ddi:
1, 2, 3, 4, 5, 5mp, 6, 6mp, 7, 7mp, 8, 8mp
oddi:
1, 2, 2mp, 3, 3mp, 4, 4mp, 5, 5mp
References
copyreq(D4str),
datab(D4str),
iocblk(D4str),
Intro(D7str),
msgb(D4str)
19 June 2005
© 2005 The SCO Group, Inc. All rights reserved.
OpenServer 6 and UnixWare (SVR5) HDK - June 2005