mcopyin(9f) [opensolaris man page]
mcopyin(9F) Kernel Functions for Drivers mcopyin(9F) NAME
mcopyin - Convert an M_IOCTL or M_IOCDATA message to an M_COPYIN SYNOPSIS
#include <sys/stream.h> #include <sys/strsun.h> void mcopyin(mblk_t *mp, void *private, size_t size, void * useraddr); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). PARAMETERS
mp M_IOCTL or M_IOCDATA message. private Value to which the cq_private field of copyreq(9S) is set. size Value to which the cq_size field of copyreq(9S) is set. useraddr Optionally, the value to which the cq_addr field of copyreq(9S) is set. DESCRIPTION
The mcopyin() function converts an M_IOCTL or M_IOCDATA message into an M_COPYIN message using the supplied arguments. To convert the message, mcopyin() changes the message type to M_COPYIN, and its payload from a iocblk(9S) to a copyreq(9S). Since the iocblk(9S) and copyreq(9S) are designed to overlay one another, the only fields which must be updated are cq_private, cq_size, and cq_addr, which are set to the supplied values. If useraddr is passed as NULL, mp must be a transparent M_IOCTL, and cq_addr is assigned the pointer- sized quantity found at mp->b_cont->b_rptr. Any trailing message blocks associated with mp are freed. RETURN VALUES
None. CONTEXT
This function can be called from user, kernel or interrupt context. SEE ALSO
mcopyout(9F), copyreq(9S) STREAMS Programming Guide SunOS 5.11 9 June 2004 mcopyin(9F)
Check Out this Related Man Page
Intro(9S) Data Structures for Drivers Intro(9S) NAME
Intro, intro - introduction to kernel data structures and properties DESCRIPTION
Section 9P describes kernel properties used by device drivers. Section 9S describes the data structures used by drivers to share informa- tion between the driver and the kernel. See Intro(9E) for an overview of device driver interfaces. In Section 9S, reference pages contain the following headings: o NAME summarizes the purpose of the structure or property. o SYNOPSIS lists the include file that defines the structure or property. o INTERFACE LEVEL describes any architecture dependencies. o DESCRIPTION provides general information about the structure or property. o STRUCTURE MEMBERS lists all accessible structure members (for Section 9S). o SEE ALSO gives sources for further information. Of the preceding headings, Section 9P reference pages contain the NAME, DESCRIPTION, and SEE ALSO fields. Every driver MUST include <sys/ddi.h> and <sys/sunddi.h>, in that order, and as final entries. The following table summarizes the STREAMS structures described in Section 9S. +-----------------------------+-----------------------------+ | Structure | Type | +-----------------------------+-----------------------------+ |copyreq |DDI/DKI | +-----------------------------+-----------------------------+ |copyresp |DDI/DKI | +-----------------------------+-----------------------------+ |datab |DDI/DKI | +-----------------------------+-----------------------------+ |fmodsw |Solaris DDI | +-----------------------------+-----------------------------+ |free_rtn |DDI/DKI | +-----------------------------+-----------------------------+ |iocblk |DDI/DKI | +-----------------------------+-----------------------------+ |linkblk |DDI/DKI | +-----------------------------+-----------------------------+ |module_info |DDI/DKI | +-----------------------------+-----------------------------+ |msgb |DDI/DKI | +-----------------------------+-----------------------------+ |qband |DDI/DKI | +-----------------------------+-----------------------------+ |qinit |DDI/DKI | +-----------------------------+-----------------------------+ |queclass |Solaris DDI | +-----------------------------+-----------------------------+ |queue |DDI/DKI | +-----------------------------+-----------------------------+ |streamtab |DDI/DKI | +-----------------------------+-----------------------------+ |stroptions |DDI/DKI | +-----------------------------+-----------------------------+ The following table summarizes structures that are not specific to STREAMS I/O. +-----------------------------+-----------------------------+ | Structure | Type | +-----------------------------+-----------------------------+ |aio_req |Solaris DDI | +-----------------------------+-----------------------------+ |buf |DDI/DKI | +-----------------------------+-----------------------------+ |cb_ops |Solaris DDI | +-----------------------------+-----------------------------+ |ddi_device_acc_attr |Solaris DDI | +-----------------------------+-----------------------------+ |ddi_dma_attr |Solaris DDI | +-----------------------------+-----------------------------+ |ddi_dma_cookie |Solaris DDI | +-----------------------------+-----------------------------+ |ddi_dma_lim_sparc |Solaris SPARC DDI | +-----------------------------+-----------------------------+ |ddi_dma_lim_x86 |Solaris x86 DDI | +-----------------------------+-----------------------------+ |ddi_dma_req |Solaris DDI | +-----------------------------+-----------------------------+ |ddi_dmae_req |Solaris x86 DDI | +-----------------------------+-----------------------------+ |ddi_idevice_cookie |Solaris DDI | +-----------------------------+-----------------------------+ |ddi_mapdev_ctl |Solaris DDI | +-----------------------------+-----------------------------+ |devmap_callback_ctl |Solaris DDI | +-----------------------------+-----------------------------+ |dev_ops |Solaris DDI | +-----------------------------+-----------------------------+ |iovec |DDI/DKI | +-----------------------------+-----------------------------+ |kstat |Solaris DDI | +-----------------------------+-----------------------------+ |kstat_intr |Solaris DDI | +-----------------------------+-----------------------------+ |kstat_io |Solaris DDI | +-----------------------------+-----------------------------+ |kstat_named |Solaris DDI | +-----------------------------+-----------------------------+ |map |DDI/DKI | +-----------------------------+-----------------------------+ |modldrv |Solaris DDI | +-----------------------------+-----------------------------+ |modlinkage |Solaris DDI | +-----------------------------+-----------------------------+ |modlstrmod |Solaris DDI | +-----------------------------+-----------------------------+ |scsi_address |Solaris DDI | +-----------------------------+-----------------------------+ |scsi_arq_status |Solaris DDI | +-----------------------------+-----------------------------+ |scsi_device |Solaris DDI | +-----------------------------+-----------------------------+ |scsi_extended_sense |Solaris DDI | +-----------------------------+-----------------------------+ |scsi_hba_tran |Solaris DDI | +-----------------------------+-----------------------------+ |scsi_inquiry |Solaris DDI | +-----------------------------+-----------------------------+ |scsi_pkt |Solaris DDI | +-----------------------------+-----------------------------+ |scsi_status |Solaris DDI | +-----------------------------+-----------------------------+ |uio |DDI/DKI | +-----------------------------+-----------------------------+ SEE ALSO
Intro(9E) NOTES
Do not declare arrays of structures as the size of the structures can change between releases. Rely only on the structure members listed in this chapter and not on unlisted members or the position of a member in a structure. SunOS 5.11 15 May 2001 Intro(9S)