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net: Support inclusion of <linux/socket.h> before <sys/socket.h>

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The following user-space program fails to compile:

    #include <linux/socket.h>
    #include <sys/socket.h>
    int main() { return 0; }

The reason is that <linux/socket.h> tests __GLIBC__ to decide whether it
should define various structures and macros that are now defined for
user-space by <sys/socket.h>, but __GLIBC__ is not defined if no libc
headers have yet been included.

It seems safe to drop support for libc 5 now.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Bastian Blank <waldi@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2009-10-05 00:24:36 -07:00 committed by David S. Miller
parent 9240d7154e
commit 9c501935a3
1 changed files with 3 additions and 18 deletions
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21
include/linux/socket.h
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@ -16,7 +16,7 @@ struct __kernel_sockaddr_storage {
/* _SS_MAXSIZE value minus size of ss_family */
} __attribute__ ((aligned(_K_SS_ALIGNSIZE))); /* force desired alignment */
#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
#ifdef __KERNEL__
#include <asm/socket.h> /* arch-dependent defines */
#include <linux/sockios.h> /* the SIOCxxx I/O controls */
@ -100,21 +100,6 @@ struct cmsghdr {
((mhdr)->msg_controllen - \
((char *)(cmsg) - (char *)(mhdr)->msg_control)))
/*
* This mess will go away with glibc
*/
#ifdef __KERNEL__
#define __KINLINE static inline
#elif defined(__GNUC__)
#define __KINLINE static __inline__
#elif defined(__cplusplus)
#define __KINLINE static inline
#else
#define __KINLINE static
#endif
/*
* Get the next cmsg header
*
@ -128,7 +113,7 @@ struct cmsghdr {
* ancillary object DATA. --ANK (980731)
*/
__KINLINE struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
static inline struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
struct cmsghdr *__cmsg)
{
struct cmsghdr * __ptr;
@ -140,7 +125,7 @@ __KINLINE struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,
return __ptr;
}
__KINLINE struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)
static inline struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)
{
return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);
}