Add the following ACL editing functions:

  acl_add_perm, acl_clear_perms, acl_copy_entry, acl_create_entry,
  acl_delete_perm, acl_get_permset, acl_get_qualifier, acl_get_tag_type,
  acl_set_permset, acl_set_qualifier, acl_set_tag_type

This brings us within 4 functions of a full ACL editing library.

Reviewed by:	rwatson

1 files changed, 97 insertions, 0 deletions

diff --git a/lib/libc/posix1e/acl_add_perm.3 b/lib/libc/posix1e/acl_add_perm.3
new file mode 100644
index 0000000..7354d23
--- /dev/null
+++ b/lib/libc/posix1e/acl_add_perm.3
@@ -0,0 +1,97 @@
+.\"-
+.\" Copyright (c) 2001 Chris D. Faulhaber
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" 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 THE VOICES IN HIS HEAD 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd March 10, 2001
+.Dt ACL_ADD_PERM 3
+.Os
+.Sh NAME
+.Nm acl_add_perm
+.Nd Add permissions to a permission set
+.Sh LIBRARY
+.Lb libposix1e
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/acl.h>
+.Ft int
+.Fn acl_add_perm "acl_permset_t permset_d, acl_perm_t perm"
+.Sh DESCRIPTION
+.Fn acl_add_perm
+is a POSIX.1e call that adds the permission contained in
+.Ar perm
+to the permission set
+.Ar permset_d .
+.Pp
+Note: it is not considered an error to attempt to add permissions
+that already exist in the permission set.
+.Sh RETURN VALUES
+Upon successful completion, the function will return a value of
+.Va 0 .
+Otherwise, a value of
+.Va -1
+will be returned, and
+.Va errno
+will be set to indicate the error.
+.Sh ERRORS
+If any of the following conditions occur, the
+.Fn acl_add_perm
+function will return a value of
+.Va -1
+and set
+.Va errno
+to the corresponding value:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+Argument
+.Ar permset_d
+is not a valid descriptor for a permission set within an ACL entry.
+Argument
+.Ar perm
+does not contain a valid
+.Ar acl_perm_t
+value.
+.El
+.Sh SEE ALSO
+.Xr acl 3 ,
+.Xr acl_clear_perms 3 ,
+.Xr acl_delete_perms 3 ,
+.Xr acl_get_permset 3 ,
+.Xr acl_set_permset 3 ,
+.Xr posix1e 3
+.Sh STANDARDS
+POSIX.1e is described in IEEE POSIX.1e draft 17.
+.Sh HISTORY
+POSIX.1e support was introduced in
+.Fx 4.0 .
+The
+.Fn acl_add_perm
+function was added in
+.Fx 5.0 .
+.Sh AUTHORS
+The
+.Fn acl_add_perm
+function was written by
+.An Chris D. Faulhaber Aq jedgar@fxp.org .