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-rw-r--r--libc/sysdeps/linux/common/bits/socket.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/bits/socket.h b/libc/sysdeps/linux/common/bits/socket.h
index cc13c4874..2f3dc797b 100644
--- a/libc/sysdeps/linux/common/bits/socket.h
+++ b/libc/sysdeps/linux/common/bits/socket.h
@@ -215,16 +215,26 @@ enum
/* Note: do not change these members to match glibc; these match the
SuSv3 spec already (e.g. msg_iovlen/msg_controllen).
http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/socket.h.html */
+/* Note: linux kernel uses __kernel_size_t (which is 8bytes on 64bit
+ platforms, and 4bytes on 32bit platforms) for msg_iovlen/msg_controllen */
struct msghdr
{
void *msg_name; /* Address to send to/receive from. */
socklen_t msg_namelen; /* Length of address data. */
struct iovec *msg_iov; /* Vector of data to send/receive into. */
+#if __WORDSIZE == 32
int msg_iovlen; /* Number of elements in the vector. */
+#else
+ size_t msg_iovlen; /* Number of elements in the vector. */
+#endif
void *msg_control; /* Ancillary data (eg BSD filedesc passing). */
+#if __WORDSIZE == 32
socklen_t msg_controllen; /* Ancillary data buffer length. */
+#else
+ size_t msg_controllen; /* Ancillary data buffer length. */
+#endif
int msg_flags; /* Flags on received message. */
};