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bsd_source/lib/libc/src_bsd/include/sys/socket.h - 19.9KB - 520 lines

430: #define CMSG_DATA(cmsg) \
431:         ((u_char *)(cmsg) + _ALIGN(sizeof(struct cmsghdr)))
432: 
434: #define CMSG_NXTHDR(mhdr, cmsg) \
435:         (((caddr_t)(cmsg) + _ALIGN((cmsg)->cmsg_len) + \
436:                             _ALIGN(sizeof(struct cmsghdr)) > \
437:             ((caddr_t)(mhdr)->msg_control) + (mhdr)->msg_controllen) ? \
451: #ifdef _KERNEL
452: #define CMSG_ALIGN(n)           _ALIGN(n)
453: #endif
455: /* Length of the contents of a control message of length len */
456: #define CMSG_LEN(len)   (_ALIGN(sizeof(struct cmsghdr)) + (len))
457: 
458: /* Length of the space taken up by a padded control message of length len */
459: #define CMSG_SPACE(len) (_ALIGN(sizeof(struct cmsghdr)) + _ALIGN(len))
460: