ACL_COPY_EXT
Section: C Library Functions (3)
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BSD mandoc
Linux ACL
NAME
acl_copy_ext
- copy an ACL from internal to external representation
LIBRARY
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
In sys/types.h
In sys/acl.h
Ft ssize_t
Fn acl_copy_ext void *buf_p acl_t acl ssize_t size
DESCRIPTION
The
Fn acl_copy_ext
function copies the ACL pointed to by
acl
from system-managed space to the user managed space pointed to by
buf_p
The
size
parameter represents the size in bytes of the buffer pointed to by
buf_p
The format of the ACL placed in the buffer pointed to by
buf_p
is a contiguous, persistent data item, the format of which is unspecified.
It is the responsibility of the invoker to allocate an area large enough
to hold the copied ACL. The size of the exportable, contiguous, persistent
form of the ACL may be obtained by invoking the
Fn acl_size
function.
Any ACL entry descriptors that refer to an entry in the ACL referenced by
acl
continue to refer to those entries. Any existing ACL pointers that refer
to the ACL referenced by
acl
continue to refer to the ACL.
RETURN VALUE
Upon success, this function returns the number of bytes placed in the buffer pointed to by
buf_p
On error, a value of
(ssize_t)-1
is returned and
errno
is set appropriately.
ERRORS
If any of the following conditions occur, the
Fn acl_copy_ext
function returns a value of
(ssize_t)-1
and sets
errno
to the corresponding value:
- Bq Er EINVAL
-
The
size
parameter is zero or negative.
The argument
acl
is not a valid pointer to an ACL.
The ACL referenced by
acl
contains one or more improperly formed ACL entries, or for some other
reason cannot be translated into the external form of an ACL.
- Bq Er ERANGE
-
The
size
parameter is greater than zero but smaller than the length of the contiguous, persistent form of the ACL.
STANDARDS
IEEE Std 1003.1e draft 17 (lqPOSIX.1erq, abandoned)
SEE ALSO
acl_copy_int3,
acl_size3,
acl(5)
AUTHOR
Derived from the FreeBSD manual pages written by
An Robert N M Watson Aq
rwatson@FreeBSD.org ,
and adapted for Linux by
An Andreas Gruenbacher Aq
a.gruenbacher@bestbits.at .
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- STANDARDS
-
- SEE ALSO
-
- AUTHOR
-
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