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-rw-r--r--include/uapi/linux/socket.h19
1 files changed, 13 insertions, 6 deletions
diff --git a/include/uapi/linux/socket.h b/include/uapi/linux/socket.h
index 8eb96021709c..c3409c8ec0dd 100644
--- a/include/uapi/linux/socket.h
+++ b/include/uapi/linux/socket.h
@@ -6,17 +6,24 @@
6 * Desired design of maximum size and alignment (see RFC2553) 6 * Desired design of maximum size and alignment (see RFC2553)
7 */ 7 */
8#define _K_SS_MAXSIZE 128 /* Implementation specific max size */ 8#define _K_SS_MAXSIZE 128 /* Implementation specific max size */
9#define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *))
10 /* Implementation specific desired alignment */
11 9
12typedef unsigned short __kernel_sa_family_t; 10typedef unsigned short __kernel_sa_family_t;
13 11
12/*
13 * The definition uses anonymous union and struct in order to control the
14 * default alignment.
15 */
14struct __kernel_sockaddr_storage { 16struct __kernel_sockaddr_storage {
15 __kernel_sa_family_t ss_family; /* address family */ 17 union {
16 /* Following field(s) are implementation specific */ 18 struct {
17 char __data[_K_SS_MAXSIZE - sizeof(unsigned short)]; 19 __kernel_sa_family_t ss_family; /* address family */
20 /* Following field(s) are implementation specific */
21 char __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
18 /* space to achieve desired size, */ 22 /* space to achieve desired size, */
19 /* _SS_MAXSIZE value minus size of ss_family */ 23 /* _SS_MAXSIZE value minus size of ss_family */
20} __attribute__ ((aligned(_K_SS_ALIGNSIZE))); /* force desired alignment */ 24 };
25 void *__align; /* implementation specific desired alignment */
26 };
27};
21 28
22#endif /* _UAPI_LINUX_SOCKET_H */ 29#endif /* _UAPI_LINUX_SOCKET_H */