.\" Access Control Lists manual pages
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.\" (C) 2002 Andreas Gruenbacher, <andreas.gruenbacher@gmail.com>
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.Dd March 23, 2002
.Dt ACL_FROM_MODE 3
.Os "Linux ACL"
.Sh NAME
.Nm acl_from_mode
.Nd create an ACL from file permission bits
.Sh LIBRARY
Linux Access Control Lists library (libacl, \-lacl).
.Sh SYNOPSIS
.In sys/types.h
.In acl/libacl.h
.Ft acl_t
.Fn acl_from_mode "mode_t mode"
.Sh DESCRIPTION
The
.Fn acl_from_mode
function creates a minimal ACL that contains the three entries with tag
types ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER, with permissions
corresponding to the owner, group, and other permission bits of its
argument
.Va mode .
.Sh RETURN VALUE
On success, this function returns a pointer to the
working storage. On error, a value of
.Li (acl_t)NULL
is returned, and
.Va errno
is set appropriately.
.Sh ERRORS
If any of the following conditions occur, the
.Fn acl_from_mode
function returns a value of
.Li (acl_t)NULL
and sets
.Va errno
to the corresponding value:
.Bl -tag -width Er
.It Bq Er ENOMEM
The ACL working storage requires more memory than is allowed by the
hardware or system-imposed memory management constraints.
.El
.Sh STANDARDS
This is a non-portable, Linux specific extension to the ACL manipulation
functions defined in IEEE Std 1003.1e draft 17 (\(lqPOSIX.1e\(rq, abandoned).
.Sh SEE ALSO
.Xr acl_equiv_mode 3 ,
.Xr acl_get_file 3 ,
.Xr acl 5
.Sh AUTHOR
Written by
.An "Andreas Gruenbacher" Aq andreas.gruenbacher@gmail.com .