diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/socketbits.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/socketbits.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/socketbits.h b/sysdeps/unix/sysv/linux/socketbits.h index 91deb6c815..915e0f001e 100644 --- a/sysdeps/unix/sysv/linux/socketbits.h +++ b/sysdeps/unix/sysv/linux/socketbits.h @@ -23,6 +23,7 @@ #include <features.h> #define __need_size_t +#define __need_NULL #include <stddef.h> @@ -134,13 +135,19 @@ struct cmsghdr /* XXX Should be type `size_t' according to POSIX.1g. */ int cmsg_level; /* Originating protocol. */ int cmsg_type; /* Protocol specific type. */ +#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2 unsigned char __cmsg_data[0]; /* Ancillary data. */ +#endif }; /* Ancillary data object manipulation macros. */ -#define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data) +#if !defined __STRICT_ANSI__ && defined __GNUC__ && __GNUC__ >= 2 +# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data) +#else +# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1)) +#endif #define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg) -#define CMSG_FIRSTHDR(mhdr) (mhdr) \ +#define CMSG_FIRSTHDR(mhdr) \ ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr) \ ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL) |