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130 lines
4.1 KiB
Groff
130 lines
4.1 KiB
Groff
.\"-
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.\" Copyright (c) 2001 Chris D. Faulhaber
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd June 25, 2009
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.Dt ACL_ADD_PERM 3
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.Os
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.Sh NAME
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.Nm acl_add_perm
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.Nd add permissions to a permission set
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In sys/types.h
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.In sys/acl.h
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.Ft int
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.Fn acl_add_perm "acl_permset_t permset_d" "acl_perm_t perm"
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.Sh DESCRIPTION
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The
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.Fn acl_add_perm
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function
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is a POSIX.1e call that adds the permission contained in
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.Fa perm
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to the permission set
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.Fa permset_d .
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.Pp
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Note: it is not considered an error to attempt to add permissions
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that already exist in the permission set.
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.Pp
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For POSIX.1e ACLs, valid values are:
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.Bl -column -offset 3n "ACL_WRITE_NAMED_ATTRS"
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.It ACL_EXECUTE Execute permission
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.It ACL_WRITE Write permission
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.It ACL_READ Read permission
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.El
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.Pp
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For NFSv4 ACLs, valid values are:
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.Bl -column -offset 3n "ACL_WRITE_NAMED_ATTRS"
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.It ACL_READ_DATA Ta "Read permission"
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.It ACL_LIST_DIRECTORY Ta "Same as ACL_READ_DATA"
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.It ACL_WRITE_DATA Ta "Write permission, or permission to create files"
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.It ACL_ADD_FILE Ta "Same as ACL_READ_DATA"
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.It ACL_APPEND_DATA Ta "Permission to create directories. Ignored for files"
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.It ACL_ADD_SUBDIRECTORY Ta "Same as ACL_APPEND_DATA"
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.It ACL_READ_NAMED_ATTRS Ta "Ignored"
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.It ACL_WRITE_NAMED_ATTRS Ta "Ignored"
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.It ACL_EXECUTE Ta "Execute permission"
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.It ACL_DELETE_CHILD Ta "Permission to delete files and subdirectories"
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.It ACL_READ_ATTRIBUTES Ta "Permission to read basic attributes"
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.It ACL_WRITE_ATTRIBUTES Ta "Permission to change basic attributes"
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.It ACL_DELETE Ta "Permission to delete the object this ACL is placed on"
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.It ACL_READ_ACL Ta "Permission to read ACL"
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.It ACL_WRITE_ACL Ta "Permission to change the ACL and file mode"
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.It ACL_SYNCHRONIZE Ta "Ignored"
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.El
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.Pp
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Calling
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.Fn acl_add_perm
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with
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.Fa perm
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equal to ACL_WRITE or ACL_READ brands the ACL as POSIX.
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Calling it with ACL_READ_DATA, ACL_LIST_DIRECTORY, ACL_WRITE_DATA,
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ACL_ADD_FILE, ACL_APPEND_DATA, ACL_ADD_SUBDIRECTORY, ACL_READ_NAMED_ATTRS,
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ACL_WRITE_NAMED_ATTRS, ACL_DELETE_CHILD, ACL_READ_ATTRIBUTES,
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ACL_WRITE_ATTRIBUTES, ACL_DELETE, ACL_READ_ACL, ACL_WRITE_ACL
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or ACL_SYNCHRONIZE brands the ACL as NFSv4.
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.Sh RETURN VALUES
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.Rv -std acl_add_perm
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.Sh ERRORS
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The
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.Fn acl_add_perm
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function fails if:
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.Bl -tag -width Er
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.It Bq Er EINVAL
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Argument
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.Fa permset_d
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is not a valid descriptor for a permission set within an ACL entry.
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Argument
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.Fa perm
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does not contain a valid
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.Vt acl_perm_t
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value.
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ACL is already branded differently.
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.El
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.Sh SEE ALSO
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.Xr acl 3 ,
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.Xr acl_clear_perms 3 ,
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.Xr acl_delete_perm 3 ,
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.Xr acl_get_brand_np 3 ,
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.Xr acl_get_permset 3 ,
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.Xr acl_set_permset 3 ,
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.Xr posix1e 3
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.Sh STANDARDS
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POSIX.1e is described in IEEE POSIX.1e draft 17.
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.Sh HISTORY
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POSIX.1e support was introduced in
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.Fx 4.0 .
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The
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.Fn acl_add_perm
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function was added in
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.Fx 5.0 .
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.Sh AUTHORS
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The
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.Fn acl_add_perm
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function was written by
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.An Chris D. Faulhaber Aq Mt jedgar@fxp.org .
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