devhw.h File Reference

#include <aurora.h>
#include <process.h>

Include dependency graph for devhw.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions
void	AuHwdevInitialize (void)
	AuHwdevInitialize – register /dev/hwdev (hardware access for user-space drivers, see BaseHdr/hwdev.h)
void	AuInputSrvInitialize (void)
	AuInputSrvInitialize – register /dev/inputsrv (see BaseHdr/inputsrv.h)
bool	AuHwdevCallerAllowed (AuProcess *proc)
	AuHwdevCallerAllowed – true when proc is in the MISC_DAEMONS group. Checked on every privileged operation: a write-mode open skips the VFS permission check, so node permissions alone are not enough.
bool	AuHwdevClaimsPci (int bus, int dev, int func)
	True when a live user-space hwdev capability owns this PCI function.
bool	AuHwdevOwnsDma (AuProcess *proc, uint64_t phys, uint64_t len)
	AuHwdevOwnsDma – true when [phys, phys+len) lies inside a DMA buffer that proc allocated through one of its own hw handles. Lets other kernel code accept a user-supplied physical address without trusting it.
bool	AuHwdevHandleIsDevice (AuProcess *proc, int fd, uint16_t vendor, uint16_t device)
	Validate that fd is the caller's PCI function with the requested ID.
void *	AuHwdevHandleObject (AuProcess *proc, int fd)
	Return the opaque kernel object for one exact caller handle.
bool	AuHwdevHandleOwnsDma (AuProcess *proc, int fd, uint64_t phys, uint64_t len)
	Validate a DMA range against one exact hwdev capability.
AuProcess *	AuHwdevCurrentProcess (void)
	AuHwdevCurrentProcess – the process running the current thread.

Function Documentation

AuHwdevCallerAllowed()

bool AuHwdevCallerAllowed ( AuProcess *  proc )

extern

AuHwdevCallerAllowed – true when proc is in the MISC_DAEMONS group. Checked on every privileged operation: a write-mode open skips the VFS permission check, so node permissions alone are not enough.

AuHwdevClaimsPci()

bool AuHwdevClaimsPci ( int  bus, int  dev, int  func  )

extern

True when a live user-space hwdev capability owns this PCI function.

AuHwdevCurrentProcess()

AuProcess * AuHwdevCurrentProcess ( void  )

extern

AuHwdevCurrentProcess – the process running the current thread.

AuHwdevHandleIsDevice()

bool AuHwdevHandleIsDevice ( AuProcess *  proc, int  fd, uint16_t  vendor, uint16_t  device  )

extern

Validate that fd is the caller's PCI function with the requested ID.

AuHwdevHandleObject()

void * AuHwdevHandleObject ( AuProcess *  proc, int  fd  )

extern

Return the opaque kernel object for one exact caller handle.

AuHwdevHandleOwnsDma()

bool AuHwdevHandleOwnsDma ( AuProcess *  proc, int  fd, uint64_t  phys, uint64_t  len  )

extern

Validate a DMA range against one exact hwdev capability.

AuHwdevInitialize()

void AuHwdevInitialize ( void  )

extern

AuHwdevInitialize – register /dev/hwdev (hardware access for user-space drivers, see BaseHdr/hwdev.h)

AuHwdevOwnsDma()

bool AuHwdevOwnsDma ( AuProcess *  proc, uint64_t  phys, uint64_t  len  )

extern

AuHwdevOwnsDma – true when [phys, phys+len) lies inside a DMA buffer that proc allocated through one of its own hw handles. Lets other kernel code accept a user-supplied physical address without trusting it.

AuInputSrvInitialize()

void AuInputSrvInitialize ( void  )

extern

AuInputSrvInitialize – register /dev/inputsrv (see BaseHdr/inputsrv.h)