acl_size(3) — Linux manual page
ACL_SIZE(3) Library Functions Manual ACL_SIZE(3)
NAME
acl_size — get the size of the external representation of an ACL
LIBRARY
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS
<sys/types.h> <sys/acl.h> ssize_t acl_size(acl_t acl)
DESCRIPTION
The acl_size() function return the size, in bytes, of the buffer
required to hold the exportable, contiguous, persistent form of
the ACL pointed to by the argument acl, when converted by
acl_copy_ext().
Any existing ACL entry descriptors that refer to entries in acl
continue to refer to the same entries. Any existing ACL pointers
that refer to the ACL referred to by acl continue to refer to the
ACL. The order of ACL entries within acl remains unchanged.
RETURN VALUE
On success, the acl_size() function returns the size in bytes of
the contiguous, persistent form of the ACL. On error, a value of
(ssize_t)-1 is returned and errno is set appropriately.
ERRORS
If any of the following conditions occur, the acl_size() function
returns a value of (ssize_t)-1 and sets errno to the
corresponding value:
[EINVAL] The argument acl is not a valid pointer to an
ACL.
STANDARDS
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
SEE ALSO
acl_copy_ext(3), acl(5)
AUTHOR
Derived from the FreeBSD manual pages written by Robert N M
Watson <rwatson@FreeBSD.org>, and adapted for Linux by Andreas
Gruenbacher <andreas.gruenbacher@gmail.com>.
COLOPHON
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 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2024-04-25.) 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 improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org