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+.\" Access Control Lists manual pages
+.\"
+.\" (C) 2002 Andreas Gruenbacher, <a.gruenbacher@computer.org>
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.TH ACL_DELETE_PERM 3 "Linux ACL Library" "March 2002" "Access Control Lists"
+.SH NAME
+acl_delete_perm \- delete a permission from an ACL permission set
+.SH LIBRARY
+Linux Access Control Lists library (libacl, \-lacl).
+.SH C SYNOPSIS
+.sp
+.nf
+.B #include <sys/types.h>
+.B #include <sys/acl.h>
+.sp
+.B "int acl_delete_perm (acl_permset_t \f2permset_d\f3, "
+.B "                     acl_perm_t \f2perm\f3);"
+.Op
+.SH DESCRIPTION
+The
+.B acl_delete_perm
+function deletes the permission contained in the argument
+.I perm
+from the permission set referred to by the argument
+.IR permset_d .
+An attempt to delete a permission that is not contained in the permission
+set is not considered an error.
+.PP
+Any existing descriptors that refer to
+.I permset_d
+continue to refer to that permission set.
+.SH RETURN VALUE
+The value 0 is returned if successful; otherwise the value -1 is
+returned and the global variable errno is set to indicate the error.
+.SH ERRORS
+If any of the following conditions occur, the
+.B acl_delete_perm
+function returns -1 and sets
+.B errno
+to the corresponding value:
+.TP
+.SM
+\%[EINVAL]
+The argument
+.I permset_d
+is not a valid descriptor for a permission set within an ACL entry.
+.TP
+.SM
+\%[EINVAL]
+The argument
+.I perm
+does not contain a valid
+.B acl_perm_t
+value.
+.SH STANDARDS
+IEEE Std 1003.1e draft 17 (\(lqPOSIX.1e\(rq, abandoned)
+.SH AUTHOR
+Derived from the FreeBSD manual pages written by
+.IR "Robert N M Watson" ;
+and adapted for Linux by
+.I "Andreas Gruenbacher"
+<a.gruenbacher@computer.org>.
+.SH SEE ALSO
+.BR acl_get_perm (3),
+.BR acl_add_perm (3),
+.BR acl_clear_perms (3),
+.BR acl_get_permset (3),
+.BR acl_set_permset (3),
+.BR acl (5)