xref: /freebsd/lib/libc/posix1e/acl_add_perm.3 (revision aca5021d5f7dcab1e11692923266373e35322d9a)
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26.\" $FreeBSD$
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28.Dd June 25, 2009
29.Dt ACL_ADD_PERM 3
30.Os
31.Sh NAME
32.Nm acl_add_perm
33.Nd add permissions to a permission set
34.Sh LIBRARY
35.Lb libc
36.Sh SYNOPSIS
37.In sys/types.h
38.In sys/acl.h
39.Ft int
40.Fn acl_add_perm "acl_permset_t permset_d" "acl_perm_t perm"
41.Sh DESCRIPTION
42The
43.Fn acl_add_perm
44function
45is a POSIX.1e call that adds the permission contained in
46.Fa perm
47to the permission set
48.Fa permset_d .
49.Pp
50Note: it is not considered an error to attempt to add permissions
51that already exist in the permission set.
52.Pp
53For POSIX.1e ACLs, valid values are:
54.Bl -column -offset 3n "ACL_WRITE_NAMED_ATTRS"
55.It ACL_EXECUTE	Execute permission
56.It ACL_WRITE	Write permission
57.It ACL_READ	Read permission
58.El
59.Pp
60For NFSv4 ACLs, valid values are:
61.Bl -column -offset 3n "ACL_WRITE_NAMED_ATTRS"
62.It ACL_READ_DATA Ta "Read permission"
63.It ACL_LIST_DIRECTORY Ta "Same as ACL_READ_DATA"
64.It ACL_WRITE_DATA Ta "Write permission, or permission to create files"
65.It ACL_ADD_FILE Ta "Same as ACL_READ_DATA"
66.It ACL_APPEND_DATA Ta "Permission to create directories.  Ignored for files"
67.It ACL_ADD_SUBDIRECTORY Ta "Same as ACL_APPEND_DATA"
68.It ACL_READ_NAMED_ATTRS Ta "Ignored"
69.It ACL_WRITE_NAMED_ATTRS Ta "Ignored"
70.It ACL_EXECUTE Ta "Execute permission"
71.It ACL_DELETE_CHILD Ta "Permission to delete files and subdirectories"
72.It ACL_READ_ATTRIBUTES Ta "Permission to read basic attributes"
73.It ACL_WRITE_ATTRIBUTES Ta "Permission to change basic attributes"
74.It ACL_DELETE Ta "Permission to delete the object this ACL is placed on"
75.It ACL_READ_ACL Ta "Permission to read ACL"
76.It ACL_WRITE_ACL Ta "Permission to change the ACL and file mode"
77.It ACL_SYNCHRONIZE Ta "Ignored"
78.El
79.Pp
80Calling
81.Fn acl_add_perm
82with
83.Fa perm
84equal to ACL_WRITE or ACL_READ brands the ACL as POSIX.
85Calling it with ACL_READ_DATA, ACL_LIST_DIRECTORY, ACL_WRITE_DATA,
86ACL_ADD_FILE, ACL_APPEND_DATA, ACL_ADD_SUBDIRECTORY, ACL_READ_NAMED_ATTRS,
87ACL_WRITE_NAMED_ATTRS, ACL_DELETE_CHILD, ACL_READ_ATTRIBUTES,
88ACL_WRITE_ATTRIBUTES, ACL_DELETE, ACL_READ_ACL, ACL_WRITE_ACL
89or ACL_SYNCHRONIZE brands the ACL as NFSv4.
90.Sh RETURN VALUES
91.Rv -std acl_add_perm
92.Sh ERRORS
93The
94.Fn acl_add_perm
95function fails if:
96.Bl -tag -width Er
97.It Bq Er EINVAL
98Argument
99.Fa permset_d
100is not a valid descriptor for a permission set within an ACL entry.
101Argument
102.Fa perm
103does not contain a valid
104.Vt acl_perm_t
105value.
106ACL is already branded differently.
107.El
108.Sh SEE ALSO
109.Xr acl 3 ,
110.Xr acl_clear_perms 3 ,
111.Xr acl_delete_perm 3 ,
112.Xr acl_get_brand_np 3 ,
113.Xr acl_get_permset 3 ,
114.Xr acl_set_permset 3 ,
115.Xr posix1e 3
116.Sh STANDARDS
117POSIX.1e is described in IEEE POSIX.1e draft 17.
118.Sh HISTORY
119POSIX.1e support was introduced in
120.Fx 4.0 .
121The
122.Fn acl_add_perm
123function was added in
124.Fx 5.0 .
125.Sh AUTHORS
126The
127.Fn acl_add_perm
128function was written by
129.An Chris D. Faulhaber Aq jedgar@fxp.org .
130