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Commit 9c501935 authored by Ben Hutchings's avatar Ben Hutchings Committed by David S. Miller
Browse files

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



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: default avatarBen Hutchings <ben@decadent.org.uk>
Signed-off-by: default avatarBastian Blank <waldi@debian.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9240d715

include/linux/socket.h

+3 −18
Original line number Diff line number Diff line
@@ -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);

}