mojave man page for drv_priv

Query: drv_priv

OS: mojave

Section: 9f

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

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)
Related Man Pages
drv_priv(9f) - minix
drv_priv(9f) - centos
drv_priv(9f) - opendarwin
drv_priv(9f) - debian
drv_priv(9f) - hpux
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