| author | Rich Felker <dalias@aerifal.cx> | 2016年05月22日 18:49:59 -0400 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2016年05月22日 18:49:59 -0400 |
| commit | 81fb75a1d75c20d97292cbbe4cde6a1e65871abe (patch) | |
| tree | 71138623e144edd910490f327696b546e14f7d67 /include/sys/socket.h | |
| parent | 51eeb6ebc94d965768143c45e9f39b0a7998bdbd (diff) | |
| download | musl-81fb75a1d75c20d97292cbbe4cde6a1e65871abe.tar.gz | |
| -rw-r--r-- | include/sys/socket.h | 6 |
diff --git a/include/sys/socket.h b/include/sys/socket.h index fd653490..67883750 100644 --- a/include/sys/socket.h +++ b/include/sys/socket.h @@ -266,9 +266,9 @@ struct linger #define __MHDR_END(mhdr) ((unsigned char *)(mhdr)->msg_control + (mhdr)->msg_controllen) #define CMSG_DATA(cmsg) ((unsigned char *) (((struct cmsghdr *)(cmsg)) + 1)) -#define CMSG_NXTHDR(mhdr, cmsg) ((cmsg)->cmsg_len < sizeof (struct cmsghdr) ? (struct cmsghdr *)0 : \ - (__CMSG_NEXT(cmsg) + sizeof (struct cmsghdr) >= __MHDR_END(mhdr) ? (struct cmsghdr *)0 : \ - ((struct cmsghdr *)__CMSG_NEXT(cmsg)))) +#define CMSG_NXTHDR(mhdr, cmsg) ((cmsg)->cmsg_len < sizeof (struct cmsghdr) || \ + __CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= __MHDR_END(mhdr) - (unsigned char *)(cmsg) \ + ? 0 : (struct cmsghdr *)__CMSG_NEXT(cmsg)) #define CMSG_FIRSTHDR(mhdr) ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) 0) #define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) & (size_t) ~(sizeof (size_t) - 1)) |