The
acl_from_text ();
function converts the text form of an ACL referred to by
buf_p
into the internal working structure for ACLs, appropriate for applying to
files or manipulating.
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 the
(void *)acl_t
as an argument.
IMPLEMENTATION NOTES
Fx Ns 's
support for POSIX.1e interfaces and features is still under
development at this time.
RETURN VALUES
Upon successful completion, the function shall return a pointer to the
internal representation of the ACL in working storage.
Otherwise, a value
of
(acl_t)NULL
shall be returned, and
errno
shall be set to indicate the error.
ERRORS
If any of the following conditions occur, the
acl_from_text ();
function shall return a value of
(acl_t)NULL
and set
errno
to the corresponding value:
Bq Er EINVAL
Argument
buf_p
cannot be translated into an ACL.
Bq Er ENOMEM
The ACL working storage requires more memory than is allowed by the
hardware or system-imposed memory management constraints.
POSIX.1e is described in IEEE POSIX.1e draft 17.
Discussion
of the draft continues on the cross-platform POSIX.1e implementation
mailing list.
To join this list, see the
Fx POSIX.1e implementation
page for more information.
HISTORY
POSIX.1e support was introduced in
Fx 4.0 ,
and development continues.
AUTHORS
An Robert N M Watson
BUGS
The
acl_from_text ();
and
acl_to_text ();
functions
rely on the
getpwent(3)
library calls to manage username and uid mapping, as well as the
getgrent(3)
library calls to manage groupname and gid mapping.
These calls are not
thread safe, and so transitively, neither are
acl_from_text ();
and
acl_to_text (.);
These functions may also interfere with stateful
calls associated with the
getpwent ();
and
getgrent ();
calls.
