except that it sets an extended attribute on an open file referenced by
file descriptor
.Fa fd .
+.Sh NOTE
+On some filesystems, such as
+.Dv HFS+ ,
+setting the extended attribute
+.Dv com.apple.ResourceFork
+will update the modification time (``mtime'') of
+the file.
.Sh RETURN VALUES
On success, 0 is returned. On failure, -1 is returned and the global
variable
.El
.Sh SEE ALSO
.Xr getxattr 2 ,
-.Xr removexattr 2 ,
-.Xr listxattr 2
+.Xr listxattr 2 ,
+.Xr removexattr 2
.Sh HISTORY
.Fn setxattr
and