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.
If any of the following conditions occur, the acl_copy_ext()
function returns a value of (ssize_t)-1 and sets errno to the
[EINVAL] The size parameter is zero or negative.
The argument acl is not a valid pointer to an
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.
This page is part of the acl (manipulating access control lists)
project. Information about the project can be found at
http://savannah.nongnu.org/projects/acl. If you have a bug report
for this manual page, see
⟨http://savannah.nongnu.org/bugs/?group=acl⟩. This page was
obtained from the project's upstream Git repository
⟨git://git.savannah.nongnu.org/acl.git⟩ on 2021-08-27. (At that
time, the date of the most recent commit that was found in the
repository was 2021-03-16.) If you discover any rendering problems
in this HTML version of the page, or you believe there is a better
or more up-to-date source for the page, or you have corrections or
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of the original manual page), send a mail to email@example.com
Linux ACL March 23, 2002 Linux ACL