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Neither the name of Novell Inc. nor the names of its contributors * may be used to endorse or promote products derived from this * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDERS OR CONTRIBUTORS 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. * * @APPLE_LICENSE_HEADER_END@ */ /* ** ** NAME: ** ** ndrp.h ** ** FACILITY: ** ** Network Data Representation (NDR) ** ** ABSTRACT: ** ** System (machine-architecture) -dependent definitions. ** ** */ #ifndef _NDRP_H #define _NDRP_H 1 /* * Data representation descriptor (drep) * * Note that the form of a drep "on the wire" is not captured by the * the "ndr_format_t" data type. The actual structure -- a "packed drep" * -- is a vector of four bytes: * * | MSB LSB | * |<---- 8 bits ----->| * |<-- 4 -->|<-- 4 -->| * * +---------+---------+ * | int rep | chr rep | * +---------+---------+ * | float rep | * +-------------------+ * | reserved | * +-------------------+ * | reserved | * +-------------------+ * * The following macros manipulate data representation descriptors. * "NDR_COPY_DREP" copies one packed drep into another. "NDR_UNPACK_DREP" * copies from a packed drep into a variable of the type "ndr_format_t". * */ #ifdef CONVENTIONAL_ALIGNMENT # define NDR_COPY_DREP(dst, src) \ (*((signed32 *) (dst)) = *((signed32 *) (src))) #else # define NDR_COPY_DREP(dst, src) { \ (dst)[0] = (src)[0]; \ (dst)[1] = (src)[1]; \ (dst)[2] = (src)[2]; \ (dst)[3] = (src)[3]; \ } #endif #define NDR_DREP_INT_REP(drep) ((drep)[0] >> 4) #define NDR_DREP_CHAR_REP(drep) ((drep)[0] & 0xf) #define NDR_DREP_FLOAT_REP(drep) ((drep)[1]) #define NDR_UNPACK_DREP(dst, src) { \ (dst)->int_rep = NDR_DREP_INT_REP(src); \ (dst)->char_rep = NDR_DREP_CHAR_REP(src); \ (dst)->float_rep = NDR_DREP_FLOAT_REP(src); \ (dst)->reserved = 0; \ } #endif /* _NDRP_H */