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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | STANDARDS | SEE ALSO | AUTHOR | COLOPHON |
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ACL_CREATE_ENTRY(3) Library Functions Manual ACL_CREATE_ENTRY(3)
acl_create_entry — create a new ACL entry
Linux Access Control Lists library (libacl, -lacl).
<sys/types.h> <sys/acl.h> int acl_create_entry(acl_t *acl_p,
acl_entry_t *entry_p)
The acl_create_entry() function creates a new ACL entry in the ACL
pointed to by the contents of the pointer argument acl_p. On
success, the function returns a descriptor for the new ACL entry
via entry_p.
This function may cause memory to be allocated. The caller should
free any releasable memory, when the new ACL is no longer
required, by calling acl_free(3) with (void*)*acl_p as an
argument. If the ACL working storage cannot be increased in the
current location, then the working storage for the ACL pointed to
by acl_p may be relocated and the previous working storage is
released. A pointer to the new working storage is returned via
acl_p.
The components of the new ACL entry are initialized in the
following ways: the ACL tag type component contains
ACL_UNDEFINED_TAG, the qualifier component contains
ACL_UNDEFINED_ID, and the set of permissions has no permissions
enabled. Any existing ACL entry descriptors that refer to entries
in the ACL continue to refer to those entries.
The acl_create_entry() function returns the value 0 if successful;
otherwise the value -1 is returned and the global variable errno
is set to indicate the error.
If any of the following conditions occur, the acl_create_entry()
function returns -1 and sets errno to the corresponding value:
[EINVAL] The argument acl_p is not a valid pointer to an
ACL.
[ENOMEM] The ACL working storage requires more memory
than is allowed by the hardware or system-
imposed memory management constraints.
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
acl_init(3), acl_delete_entry(3), acl_free(3),
acl_create_entry(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 <andreas.gruenbacher@gmail.com>.
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 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-05-12.) 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 ACL_CREATE_ENTRY(3)
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HTML rendering created 2025-09-06 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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