ioDenyModes
AccessParam structure
#include <Files.h>
ParamBlockHeader 24 0 common fields of ParamBlock types
short filler3; 2 24
short ioDenyModes; 2 26 access rights data
short filler4 ; 2 28
char filler5; 1 30
char ioACUser; 1 31 access rights for directory only
long filler6; 4 32
long ioACOwnerID; 4 36 owner ID
long ioACGroupID; 4 40 group ID
long ioACAccess; 4 44 access rights
the extent of access privileges for specific files, volumes and
directories.
The most common way to use this structure is to allocate a union that
is an aggregate and create and initialize a pointer to the desired data
The ioACAccess field consists of a long integer with the format:
uueeggoo. uu re presents the user's rights, ee re presents everyone's
rights, gg re presents the group's rights and oo re presents the owner's
rights. It can be re presented as:
From left to right,
bit 7 is set if the user is not the directory's owner
bits 6-5 are reserved and are returned set to 0
bit 4 is set if folder has same access privileges as its parent
bit 3 is reserved and is returned set to 0
bit 2 is set if the user does not have Write privileges
bit 1 is set if the user does not have Read privileges
bit 0 is set if the user does not have Search privileges
User's rights are the logical OR of the rights for Everyone, Group and
Owner. The User bit and the Owner bit are returned only from the
GetDirAccess call and are never passed by the SetDirAccess routine.
Changing a folder's owner requires changing the OwnerID field of the
SetDirAccess routine.
The ioDenyMode integer contains permissions information and looks
like:
From left to right,
bits 15 to 6 are reserved and set to zero
bit 5 is set to deny other writers
bit 4 is set to deny other readers
bits 3 and 2 are reserved and set to zero
bit 1 is set to request Write permission
bit 0 is set to request Read permission
The ioDenyMode field is used in calls PBHOpenDeny and PBHopenRFDeny.
From left to right:
bit 7 is set if the user is not the directory's owner
bits 6 to 3 are reserved and set to 0
bit 2 is set if the user does not have Write privileges
bit 1 is set if the user does not have Read privileges
bit 0 is set if the user does not have Search privileges
The ioACUser field provides information in the above format with regard to
the user's access privileges for a directory whose volume supports access