Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
#include <sys/types.h>
#include <sys/acl.h> int
acl_create_entry (acl_t *acl_p acl_entry_t *entry_p);
DESCRIPTION
The
acl_create_entry ();
function creates a new ACL entry in the ACL pointed to by the contents of the pointer argument
acl_p
On success, the function returns a descriptor for the new
ACL entry via
entry_p
This function may cause memory to be allocated. The caller should free any
releasable memory, when the new ACL is no longer required, by calling
acl_free3
with
(void*)*acl_p
as an argument.
If the ACL working storage cannot be increased in the current location,
then the working storage for the ACL pointed to by
acl_p
may be relocated and the previous working storage is released. A pointer to
the new working storage is returned via
acl_p
The components of the new ACL entry are initialized in the following ways: the
ACL tag type component contains ACL_UNDEFINED_TAG, the qualifier component
contains ACL_UNDEFINED_ID, and the set of permissions has no permissions
enabled. Any existing ACL entry descriptors that refer to entries in the ACL
continue to refer to those entries.
RETURN VALUE
Rv -std acl_create_entry
ERRORS
If any of the following conditions occur, the
acl_create_entry ();
function returns
-1
and sets
errno
to the corresponding value:
Bq Er EINVAL
The argument
acl_p
is not a valid pointer to an ACL.
Bq Er ENOMEM
The ACL working storage requires more memory than is allowed by the hardware or system-imposed memory management constraints.
