скопировать ACL из внутреннего во внешнее представление (copy an ACL from internal to external representation)
Имя (Name)
acl_copy_ext — copy an ACL from internal to external representation
Библиотека (Library)
Linux Access Control Lists library (libacl, -lacl).
Синопсис (Synopsis)
#include <sys/types.h>
#include <sys/acl.h>
ssize_t
acl_copy_ext(void *buf_p, acl_t acl, ssize_t size);
Описание (Description)
The 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 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.
Возвращаемое значение (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.
Ошибки (Error)
If any of the following conditions occur, the acl_copy_ext()
function returns a value of (ssize_t)-1 and sets errno to the
corresponding value:
[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.
[ERANGE] The size parameter is greater than zero but
smaller than the length of the contiguous,
persistent form of the ACL.
Стандарты (Conforming to)
IEEE Std 1003.1e draft 17 ('POSIX.1e', abandoned)
Смотри также (See also)
acl_copy_int(3), acl_size(3), acl(5)
