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#ifndef _LINUX_SOCKET_H

#define _LINUX_SOCKET_H

/*

 * Desired design of maximum size and alignment (see RFC2553)

 */

#define _K_SS_MAXSIZE   128     /* Implementation specific max size */

#define _K_SS_ALIGNSIZE (__alignof__ (struct sockaddr *))

                                /* Implementation specific desired alignment */

struct __kernel_sockaddr_storage {

        unsigned short  ss_family;              /* address family */

        /* Following field(s) are implementation specific */

        char            __data[_K_SS_MAXSIZE - sizeof(unsigned short)];

                                /* space to achieve desired size, */

                                /* _SS_MAXSIZE value minus size of ss_family */

} __attribute__ ((aligned(_K_SS_ALIGNSIZE)));   /* force desired alignment */

#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)

#include <linux/config.h>               /* for CONFIG_COMPAT */

#include <linux/linkage.h>

#include <asm/socket.h>                 /* arch-dependent defines       */

#include <linux/sockios.h>              /* the SIOCxxx I/O controls     */

#include <linux/uio.h>                  /* iovec support                */

#include <linux/types.h>                /* pid_t                        */

#include <linux/compiler.h>             /* __user                       */

typedef unsigned short  sa_family_t;

/*

 *      1003.1g requires sa_family_t and that sa_data is char.

 */

struct sockaddr {

        sa_family_t     sa_family;      /* address family, AF_xxx       */

        char            sa_data[14];    /* 14 bytes of protocol address */

};

struct linger {

        int             l_onoff;        /* Linger active                */

        int             l_linger;       /* How long to linger for       */

};

#define sockaddr_storage __kernel_sockaddr_storage

/*

 *      As we do 4.4BSD message passing we use a 4.4BSD message passing

 *      system, not 4.3. Thus msg_accrights(len) are now missing. They

 *      belong in an obscure libc emulation or the bin.

 */

struct msghdr {

        void    *       msg_name;       /* Socket name                  */

        int             msg_namelen;    /* Length of name               */

        struct iovec *  msg_iov;        /* Data blocks                  */

        __kernel_size_t msg_iovlen;     /* Number of blocks             */

        void    *       msg_control;    /* Per protocol magic (eg BSD file descriptor passing) */

        __kernel_size_t msg_controllen; /* Length of cmsg list */

        unsigned        msg_flags;

};

/*

 *      POSIX 1003.1g - ancillary data object information

 *      Ancillary data consits of a sequence of pairs of

 *      (cmsghdr, cmsg_data[])

 */

struct cmsghdr {

        __kernel_size_t cmsg_len;       /* data byte count, including hdr */

        int             cmsg_level;     /* originating protocol */

        int             cmsg_type;      /* protocol-specific type */

};

/*

 *      Ancilliary data object information MACROS

 *      Table 5-14 of POSIX 1003.1g

 */

#define __CMSG_NXTHDR(ctl, len, cmsg) __cmsg_nxthdr((ctl),(len),(cmsg))

#define CMSG_NXTHDR(mhdr, cmsg) cmsg_nxthdr((mhdr), (cmsg))

#define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) )

#define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + CMSG_ALIGN(sizeof(struct cmsghdr))))

#define CMSG_SPACE(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + CMSG_ALIGN(len))

#define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))

#define __CMSG_FIRSTHDR(ctl,len) ((len) >= sizeof(struct cmsghdr) ? \

                                  (struct cmsghdr *)(ctl) : \

                                  (struct cmsghdr *)NULL)

#define CMSG_FIRSTHDR(msg)      __CMSG_FIRSTHDR((msg)->msg_control, (msg)->msg_controllen)

/*

 *      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

 *

 *      PLEASE, do not touch this function. If you think, that it is

 *      incorrect, grep kernel sources and think about consequences

 *      before trying to improve it.

 *

 *      Now it always returns valid, not truncated ancillary object

 *      HEADER. But caller still MUST check, that cmsg->cmsg_len is

 *      inside range, given by msg->msg_controllen before using

 *      ansillary object DATA.                          --ANK (980731)

 */

__KINLINE struct cmsghdr * __cmsg_nxthdr(void *__ctl, __kernel_size_t __size,

                                               struct cmsghdr *__cmsg)

{

        struct cmsghdr * __ptr;

        __ptr = (struct cmsghdr*)(((unsigned char *) __cmsg) +  CMSG_ALIGN(__cmsg->cmsg_len));

        if ((unsigned long)((char*)(__ptr+1) - (char *) __ctl) > __size)

                return (struct cmsghdr *)0;

        return __ptr;

}

__KINLINE struct cmsghdr * cmsg_nxthdr (struct msghdr *__msg, struct cmsghdr *__cmsg)

{

        return __cmsg_nxthdr(__msg->msg_control, __msg->msg_controllen, __cmsg);

}

/* "Socket"-level control message types: */

#define SCM_RIGHTS      0x01            /* rw: access rights (array of int) */

#define SCM_CREDENTIALS 0x02            /* rw: struct ucred             */

#define SCM_CONNECT     0x03            /* rw: struct scm_connect       */

struct ucred {

        __u32   pid;

        __u32   uid;

        __u32   gid;

};

/* Supported address families. */

#define AF_UNSPEC       0

#define AF_UNIX         1       /* Unix domain sockets          */

#define AF_LOCAL        1       /* POSIX name for AF_UNIX       */

#define AF_INET         2       /* Internet IP Protocol         */

#define AF_AX25         3       /* Amateur Radio AX.25          */

#define AF_IPX          4       /* Novell IPX                   */

#define AF_APPLETALK    5       /* AppleTalk DDP                */

#define AF_NETROM       6       /* Amateur Radio NET/ROM        */

#define AF_BRIDGE       7       /* Multiprotocol bridge         */

#define AF_ATMPVC       8       /* ATM PVCs                     */

#define AF_X25          9       /* Reserved for X.25 project    */

#define AF_INET6        10      /* IP version 6                 */

#define AF_ROSE         11      /* Amateur Radio X.25 PLP       */

#define AF_DECnet       12      /* Reserved for DECnet project  */

#define AF_NETBEUI      13      /* Reserved for 802.2LLC project*/

#define AF_SECURITY     14      /* Security callback pseudo AF */

#define AF_KEY          15      /* PF_KEY key management API */

#define AF_NETLINK      16

#define AF_ROUTE        AF_NETLINK /* Alias to emulate 4.4BSD */

#define AF_PACKET       17      /* Packet family                */

#define AF_ASH          18      /* Ash                          */

#define AF_ECONET       19      /* Acorn Econet                 */

#define AF_ATMSVC       20      /* ATM SVCs                     */

#define AF_SNA          22      /* Linux SNA Project (nutters!) */

#define AF_IRDA         23      /* IRDA sockets                 */

#define AF_PPPOX        24      /* PPPoX sockets                */

#define AF_WANPIPE      25      /* Wanpipe API Sockets */

#define AF_LLC          26      /* Linux LLC                    */

#define AF_BLUETOOTH    31      /* Bluetooth sockets            */

#define AF_MAX          32      /* For now.. */

/* Protocol families, same as address families. */

#define PF_UNSPEC       AF_UNSPEC

#define PF_UNIX         AF_UNIX

#define PF_LOCAL        AF_LOCAL

#define PF_INET         AF_INET

#define PF_AX25         AF_AX25

#define PF_IPX          AF_IPX

#define PF_APPLETALK    AF_APPLETALK

#define PF_NETROM       AF_NETROM

#define PF_BRIDGE       AF_BRIDGE

#define PF_ATMPVC       AF_ATMPVC

#define PF_X25          AF_X25

#define PF_INET6        AF_INET6

#define PF_ROSE         AF_ROSE

#define PF_DECnet       AF_DECnet

#define PF_NETBEUI      AF_NETBEUI

#define PF_SECURITY     AF_SECURITY

#define PF_KEY          AF_KEY

#define PF_NETLINK      AF_NETLINK

#define PF_ROUTE        AF_ROUTE

#define PF_PACKET       AF_PACKET

#define PF_ASH          AF_ASH

#define PF_ECONET       AF_ECONET

#define PF_ATMSVC       AF_ATMSVC

#define PF_SNA          AF_SNA

#define PF_IRDA         AF_IRDA

#define PF_PPPOX        AF_PPPOX

#define PF_WANPIPE      AF_WANPIPE

#define PF_LLC          AF_LLC

#define PF_BLUETOOTH    AF_BLUETOOTH

#define PF_MAX          AF_MAX

/* Maximum queue length specifiable by listen.  */

#define SOMAXCONN       128

/* Flags we can use with send/ and recv.

   Added those for 1003.1g not all are supported yet

 */

#define MSG_OOB         1

#define MSG_PEEK        2

#define MSG_DONTROUTE   4

#define MSG_TRYHARD     4       /* Synonym for MSG_DONTROUTE for DECnet */

#define MSG_CTRUNC      8

#define MSG_PROBE       0x10    /* Do not send. Only probe path f.e. for MTU */

#define MSG_TRUNC       0x20

#define MSG_DONTWAIT    0x40    /* Nonblocking io                */

#define MSG_EOR         0x80    /* End of record */

#define MSG_WAITALL     0x100   /* Wait for a full request */

#define MSG_FIN         0x200

#define MSG_SYN         0x400

#define MSG_CONFIRM     0x800   /* Confirm path validity */

#define MSG_RST         0x1000

#define MSG_ERRQUEUE    0x2000  /* Fetch message from error queue */

#define MSG_NOSIGNAL    0x4000  /* Do not generate SIGPIPE */

#define MSG_MORE        0x8000  /* Sender will send more */

#define MSG_EOF         MSG_FIN

#if defined(CONFIG_COMPAT)

#define MSG_CMSG_COMPAT 0x80000000      /* This message needs 32 bit fixups */

#else

#define MSG_CMSG_COMPAT 0               /* We never have 32 bit fixups */

#endif

extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);

extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned flags);

/* Setsockoptions(2) level. Thanks to BSD these must match IPPROTO_xxx */

#define SOL_IP          0

/* #define SOL_ICMP     1       No-no-no! Due to Linux :-) we cannot use SOL_ICMP=1 */

#define SOL_TCP         6

#define SOL_UDP         17

#define SOL_IPV6        41

#define SOL_ICMPV6      58

#define SOL_SCTP        132

#define SOL_RAW         255

#define SOL_IPX         256

#define SOL_AX25        257

#define SOL_ATALK       258

#define SOL_NETROM      259

#define SOL_ROSE        260

#define SOL_DECNET      261

#define SOL_X25         262

#define SOL_PACKET      263

#define SOL_ATM         264     /* ATM layer (cell level) */

#define SOL_AAL         265     /* ATM Adaption Layer (packet level) */

#define SOL_IRDA        266

#define SOL_NETBEUI     267

#define SOL_LLC         268

/* IPX options */

#define IPX_TYPE        1

#ifdef __KERNEL__

extern int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);

extern int memcpy_fromiovecend(unsigned char *kdata, struct iovec *iov,

                                int offset, int len);

extern int csum_partial_copy_fromiovecend(unsigned char *kdata,

                                          struct iovec *iov,

                                          int offset,

                                          unsigned int len, int *csump);

extern int verify_iovec(struct msghdr *m, struct iovec *iov, char *address, int mode);

extern int memcpy_toiovec(struct iovec *v, unsigned char *kdata, int len);

extern void memcpy_tokerneliovec(struct iovec *iov, unsigned char *kdata, int len);

extern int move_addr_to_user(void *kaddr, int klen, void __user *uaddr, int __user *ulen);

extern int move_addr_to_kernel(void __user *uaddr, int ulen, void *kaddr);

extern int put_cmsg(struct msghdr*, int level, int type, int len, void *data);

#endif

#endif /* not kernel and not glibc */

#endif /* _LINUX_SOCKET_H */