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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | SEE ALSO | AUTHOR | COLOPHON |
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ACL_COPY_EXT(3) 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).
<sys/types.h> <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
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.
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 <[email protected]>, and adapted for Linux by Andreas
Gruenbacher <[email protected]>.
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
[email protected]
Linux ACL March 23, 2002 ACL_COPY_EXT(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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