How to access mapped dirve in Linux

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How to access mapped dirve in Linux

i want to access mounted/mapped drive in linux using C code

is it possible to access the mapped drive in linux using C code ?

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ddi_regs_map_setup(9F)					   Kernel Functions for Drivers 				    ddi_regs_map_setup(9F)

ddi_regs_map_setup - set up a mapping for a register address space SYNOPSIS
#include <sys/ddi.h> #include <sys/sunddi.h> int ddi_regs_map_setup(dev_info_t *dip, uint_t rnumber, caddr_t *addrp, offset_t offset, offset_t len, ddi_device_acc_attr_t *accattrp, ddi_acc_handle_t *handlep); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). PARAMETERS
dip Pointer to the device's dev_info structure. rnumber Index number to the register address space set. addrp A platform-dependent value that, when added to an offset that is less than or equal to the len parameter (see below), is used for the dev_addr argument to the ddi_get, ddi_mem_get, and ddi_io_get/put routines. offset Offset into the register address space. len Length to be mapped. accattrp Pointer to a device access attribute structure of this mapping (see ddi_device_acc_attr(9S)). handlep Pointer to a data access handle. DESCRIPTION
ddi_regs_map_setup() maps in the register set given by rnumber. The register number determines which register set is mapped if more than one exists. offset specifies the starting location within the register space and len indicates the size of the area to be mapped. If len is non-zero, it overrides the length given in the register set description. If both len and offset are 0, the entire space is mapped. The base of the mapped register space is returned in addrp. The device access attributes are specified in the location pointed by the accattrp argument (see ddi_device_acc_attr(9S) for details). The data access handle is returned in handlep. handlep is opaque; drivers should not attempt to interpret its value. The handle is used by the system to encode information for subsequent data access function calls to maintain a consistent view between the host and the device. RETURN VALUES
ddi_regs_map_setup() returns: DDI_SUCCESS Successfully set up the mapping for data access. DDI_FAILURE Invalid register number rnumber, offset offset, or length len. DDI_ME_RNUMBER_RANGE Invalid register number rnumber or unable to find reg property. DDI_REGS_ACC_CONFLICT Cannot enable the register mapping due to access conflicts with other enabled mappings. Note that the return value DDI_ME_RNUMBER_RANGE is not supported on all platforms. Also, there is potential overlap between DDI_ME_RNUM- BER_RANGE and DDI_FAILURE. Drivers should check for !=DDI_SUCCESS rather than checking for a specific failure value. CONTEXT
ddi_regs_map_setup() must be called from user or kernel context. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |PCI Local Bus, SBus, ISA | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5), ddi_regs_map_free(9F), ddi_device_acc_attr(9S) Writing Device Drivers SunOS 5.10 18 Nov 2004 ddi_regs_map_setup(9F)

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