|ACL_GET_ENTRY(3)||Library Functions Manual||ACL_GET_ENTRY(3)|
get an ACL entry
Linux Access Control Lists library (libacl, -lacl).
acl, int entry_id,
function obtains a descriptor for an ACL entry as specified by
entry_id within the ACL indicated by the argument
acl. If the value of entry_id is
ACL_FIRST_ENTRY, then the function returns in entry_p
a descriptor for the first ACL entry within acl. If
the value of entry_id is ACL_NEXT_ENTRY, then the
function returns in entry_p a descriptor for the next
ACL entry within acl.
If a call is made to
with entry_id set to ACL_NEXT_ENTRY when there has not
been either an initial successful call to
acl_get_entry(), or a previous successful call to
acl_get_entry() following a call to
then the effect is unspecified.
do not modify any ACL entries. Subsequent operations using the returned ACL
entry descriptor operate on the ACL entry within the ACL in working storage.
The order of all existing entries in the ACL remains unchanged. Any existing
ACL entry descriptors that refer to entries within the ACL continue to refer
to those entries. Any existing ACL pointers that refer to the ACL referred
to by acl continue to refer to the ACL.
If the function successfully obtains an ACL entry, the function
returns a value of
1. If the ACL has no ACL entries,
the function returns the value
0. If the value of
entry_id is ACL_NEXT_ENTRY and the last ACL entry in
the ACL has already been returned by a previous call to
acl_get_entry(), the function returns the value
0 until a successful call with an
entry_id of ACL_FIRST_ENTRY is made. Otherwise, the
-1 is returned and errno
is set to indicate the error.
If any of the following conditions occur, the
acl_get_entry() function returns
-1 and sets errno to the
- The argument acl_p is not a valid pointer to an ACL.
The argument entry_id is neither ACL_NEXT_ENTRY nor ACL_FIRST_ENTRY.
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
Derived from the FreeBSD manual pages written by Robert N M Watson ⟨rwatson@FreeBSD.org⟩, and adapted for Linux by Andreas Gruenbacher ⟨firstname.lastname@example.org⟩.
|March 23, 2002||Linux ACL|