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drv_priv(9f) [bsd man page]

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

NAME
drv_priv - determine driver privilege SYNOPSIS
#include <sys/types.h> #include <sys/cred.h> #include <sys/ddi.h> int drv_priv(cred_t *cr); INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI). PARAMETERS
cr Pointer to the user credential structure. DESCRIPTION
drv_priv() provides a general interface to the system privilege policy. It determines whether the credentials supplied by the user creden- tial structure pointed to by cr identify a process that has the {PRIV_SYS_DEVICES} privilege asserted in its effective set. This function should be used only when file access modes, special minor device numbers, and the device policy (see privileges(5), add_drv(1M)) are insuf- ficient to provide protection for the requested driver function. It is intended to replace all calls to suser() and any explicit checks for effective user ID = 0 in driver code. RETURN VALUES
This routine returns 0 if it succeeds, EPERM if it fails. CONTEXT
drv_priv() can be called from user or interrupt context. SEE ALSO
add_drv(1M), update_drv(1M), privileges(5) Writing Device Drivers SunOS 5.10 29 Jan 2003 drv_priv(9F)

Check Out this Related Man Page

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

NAME
drv_priv - determine driver privilege SYNOPSIS
#include <sys/types.h> #include <sys/cred.h> #include <sys/ddi.h> int drv_priv(cred_t *cr); INTERFACE LEVEL
Architecture independent level 1 (DDI/DKI). PARAMETERS
cr Pointer to the user credential structure. DESCRIPTION
drv_priv() provides a general interface to the system privilege policy. It determines whether the credentials supplied by the user creden- tial structure pointed to by cr identify a process that has the {PRIV_SYS_DEVICES} privilege asserted in its effective set. This function should be used only when file access modes, special minor device numbers, and the device policy (see privileges(5), add_drv(1M)) are insuf- ficient to provide protection for the requested driver function. It is intended to replace all calls to suser() and any explicit checks for effective user ID = 0 in driver code. RETURN VALUES
This routine returns 0 if it succeeds, EPERM if it fails. CONTEXT
drv_priv() can be called from user or interrupt context. SEE ALSO
add_drv(1M), update_drv(1M), privileges(5) Writing Device Drivers SunOS 5.10 29 Jan 2003 drv_priv(9F)

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