|
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | SEE ALSO | AUTHOR | COLOPHON |
ACL_COPY_EXT(3) BSD Library Functions Manual ACL_COPY_EXT(3)
acl_copy_ext — copy an ACL from internal to external representation
Linux Access Control Lists library (libacl, -lacl).
#include <sys/types.h>
#include <sys/acl.h>
ssize_t
acl_copy_ext(void *buf_p, acl_t acl, ssize_t size);
The acl_copy_ext() function copies the ACL pointed to by acl from sys‐
tem-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 unspeci‐
fied. It is the responsibility of the invoker to allocate an area
large enough to hold the copied ACL. The size of the exportable, con‐
tiguous, 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.
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.
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.
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
acl_copy_int(3), acl_size(3), acl(5)
Derived from the FreeBSD manual pages written by Robert N M Watson
<rwatson@FreeBSD.org>, and adapted for Linux by Andreas Gruenbacher
<a.gruenbacher@bestbits.at>.
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 2017-07-05. 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
Linux ACL March 23, 2002 Linux ACL