socket.h

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 * Unfortunately, the opthdrs don't include their own length, which the
 * cmsghdrs do.  What this means is that TLI programmers will not be
 * able to take something returned using these macros and immediately give
 * it back to the stack.  The size of the struct cmsghdr will have to be
 * subtracted out.
 * There doesn't seem to be a way to avoid this, since several applications
 * look into the cmsg_len field and won't work if it doesn't include the size
 * of the struct cmsghdr.
 */
struct cmsghdr {
        int     cmsg_level;             /* originating protocol */
        int     cmsg_type;              /* protocol-specific type */
        u_int   cmsg_len;               /* data byte count, including hdr */
/* followed by  u_char  cmsg_data[]; */
};

/* given pointer to struct adatahdr, return pointer to data */
#define CMSG_DATA(cmsg)         ((u_char *)((cmsg) + 1))

/* given pointer to struct adatahdr, return pointer to next adatahdr */
#define CMSG_NXTHDR(mhdr, cmsg) \
        (((caddr_t)(cmsg) + (cmsg)->cmsg_len + sizeof(struct cmsghdr) > \
            (mhdr)->msg_control + (mhdr)->msg_controllen) ? \
            (struct cmsghdr *)NULL : \
            (struct cmsghdr *)((caddr_t)(cmsg) + OPTLEN((cmsg)->cmsg_len)))

#define CMSG_FIRSTHDR(mhdr)     ((struct cmsghdr *)(mhdr)->msg_control)

/* "Socket"-level control message types: */
#define SCM_RIGHTS      0x01            /* access rights (array of int) */

/*
 * This ioctl code uses BSD style ioctls to avoid copyin/out problems.
 * Ioctls have the command encoded in the lower word, and the size of any in
 * or out parameters in the upper word.  The high 2 bits of the upper word
 * are used to encode the in/out status of the parameter; for now we restrict
 * parameters to at most 128 bytes.
 */
#define	IOCPARM_MASK	0x7f	/* parameters must be < 128 bytes */
#define	IOC_VOID	0x20000000	/* no parameters */
#define	IOC_OUT		0x40000000	/* copy out parameters */
#define	IOC_IN		0x80000000	/* copy in parameters */
#define	IOC_INOUT	(IOC_IN|IOC_OUT)
/* the 0x20000000 is so we can distinguish new ioctls from old */
#define	_IOS(x,y)	(IOC_VOID|(x<<8)|y)
#define	_IOSR(x,y,t)	(IOC_OUT|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y)
#define	_IOSW(x,y,t)	(IOC_IN|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y)
/* this should be _IOSRW, but stdio got there first */
#define	_IOSWR(x,y,t)	(IOC_INOUT|((sizeof(t)&IOCPARM_MASK)<<16)|(x<<8)|y)

/*
 * Socket ioctl commands
 */

#define SIOCSHIWAT	_IOSW('S', 1, int)	/* set high watermark */
#define SIOCGHIWAT	_IOSR('S', 2, int)	/* get high watermark */
#define SIOCSLOWAT	_IOSW('S', 3, int)	/* set low watermark */
#define SIOCGLOWAT	_IOSR('S', 4, int)	/* get low watermark */
#define SIOCATMARK	_IOSR('S', 5, int)	/* at oob mark? */
#define SIOCSPGRP	_IOSW('S', 6, int)	/* set process group */
#define SIOCGPGRP	_IOSR('S', 7, int)	/* get process group */
#define FIONREAD	_IOSR('S', 8, int)	/* BSD compatibilty */
#define FIONBIO		_IOSW('S', 9, int)	/* BSD compatibilty */
#define FIOASYNC	_IOSW('S', 10, int)	/* BSD compatibilty */
#define SIOCPROTO	_IOSW('S', 11, struct socknewproto)	/* link proto */
#define SIOCGETNAME	_IOSR('S', 12, struct sockaddr)	/* getsockname */
#define SIOCGETPEER	_IOSR('S', 13, struct sockaddr)	/* getpeername */
#define IF_UNITSEL	_IOSW('S', 14, int)	/* set unit number */
#define SIOCXPROTO	_IOS('S', 15)		/* empty proto table */
#define SIOCSHRDTYPE	_IOSW('S', 16, int)	/* set hardware type */

#define	SIOCADDRT	_IOSW('R', 9, struct ortentry)	/* add route */
#define	SIOCDELRT	_IOSW('R', 10, struct ortentry)	/* delete route */

#define	SIOCSIFADDR	_IOSW('I', 11, struct ifreq)	/* set ifnet address */
#define	SIOCGIFADDR	_IOSWR('I', 12, struct ifreq)	/* get ifnet address */
#define	SIOCSIFDSTADDR	_IOSW('I', 13, struct ifreq)	/* set p-p address */
#define	SIOCGIFDSTADDR	_IOSWR('I', 14, struct ifreq)	/* get p-p address */
#define	SIOCSIFFLAGS	_IOSW('I', 15, struct ifreq)	/* set ifnet flags */
#define	SIOCGIFFLAGS	_IOSWR('I', 16, struct ifreq)	/* get ifnet flags */
#define	SIOCGIFCONF	_IOSWR('I', 17, struct ifconf)	/* get ifnet list */

#define	SIOCSIFMTU	_IOSW('I', 21, struct ifreq)	/* get if_mtu */
#define	SIOCGIFMTU	_IOSWR('I', 22, struct ifreq)	/* set if_mtu */


#define	SIOCGIFBRDADDR	_IOSWR('I', 32, struct ifreq)	/* get broadcast addr */
#define	SIOCSIFBRDADDR	_IOSW('I', 33, struct ifreq)	/* set broadcast addr */
#define	SIOCGIFNETMASK	_IOSWR('I', 34, struct ifreq)	/* get net addr mask */
#define	SIOCSIFNETMASK	_IOSW('I', 35, struct ifreq)	/* set net addr mask */
#define	SIOCGIFMETRIC	_IOSWR('I', 36, struct ifreq)	/* get IF metric */
#define	SIOCSIFMETRIC	_IOSW('I', 37, struct ifreq)	/* set IF metric */

#define	SIOCSARP	_IOSW('I', 38, struct arpreq)	/* set arp entry */
#define	SIOCGARP	_IOSWR('I', 39, struct arpreq)	/* get arp entry */
#define	SIOCDARP	_IOSW('I', 40, struct arpreq)	/* delete arp entry */

#define SIOCSIFNAME	_IOSW('I', 41, struct ifreq)	/* set interface name */
#define	SIOCGIFONEP	_IOSWR('I', 42, struct ifreq)	/* get one-packet params */
#define	SIOCSIFONEP	_IOSW('I', 43, struct ifreq)	/* set one-packet params */
#define	SIOCDIFADDR	_IOSW('I', 44, struct ifreq)	/* delete IF addr */
#define	SIOCAIFADDR	_IOSW('I', 45, struct ifaliasreq) /*add/change IF alias*/
#define	SIOCADDMULTI	_IOSW('I', 49, struct ifreq)	/* add m'cast addr */
#define	SIOCDELMULTI	_IOSW('I', 50, struct ifreq)	/* del m'cast addr */
#define	SIOCGIFALIAS	_IOSWR('I', 51, struct ifaliasreq) /* get IF alias */


#define SIOCSOCKSYS	_IOSW('I', 66, struct socksysreq)	/* Pseudo socket syscall */

/* these use ifr_metric to pass the information */
#define SIOCSIFDEBUG	_IOSW('I', 67, struct ifreq)	/* set if debug level */
#define SIOCGIFDEBUG	_IOSWR('I', 68, struct ifreq)	/* get if debug level */

#define SIOCSIFTYPE	_IOSW('I', 69, struct ifreq)	/* set if MIB type */
#define SIOCGIFTYPE	_IOSWR('I', 70, struct ifreq)	/* get if MIB type */

#define SIOCGIFNUM	_IOSR('I', 71, int)		/* get number of ifs */
/*
 * This returns the number of ifreqs that SIOCGIFCONF would return, including
 * aliases.  This is the preferred way of sizing a buffer big enough to hold
 * all interfaces.
 */
#define SIOCGIFANUM	_IOSR('I', 72, int)	/* get number of ifreqs */
/*
 * Interface specific performance tuning
 */
#define	SIOCGIFPERF	_IOSR('I', 73, struct ifreq)	/* get perf info */
#define	SIOCSIFPERF	_IOSR('I', 74, struct ifreq)	/* get perf info */

/*
 * This structure is used to encode pseudo system calls
 */
struct socksysreq {
	/* When porting, make this the widest thing it can be */
	int   args[7];
};

/*
 * This structure is used for adding new protocols to the list supported by
 * sockets.
 */
struct socknewproto {
	int             family;	/* address family (AF_INET, etc.) */
	int             type;	/* protocol type (SOCK_STREAM, etc.) */
	int             proto;	/* per family proto number */
	dev_t           dev;	/* major/minor to use (must be a clone) */
	int             flags;	/* protosw flags */
};

/*
 * utility definitions.
 */

#ifdef MIN
#undef MIN
#endif
#define MIN(x,y) ((x) < (y) ? (x) : (y))
#ifndef MAX
#define MAX(x,y) ((x) > (y) ? (x) : (y))
#endif

#define MAXHOSTNAMELEN	256

#define	NBBY	8		/* number of bits in a byte */


/* defines for user/kernel interface */

#define	MAX_MINOR	(makedev(1,0) - 1)	/* could be non-portable */

#define	SOCKETSYS	140	/* SCO 3.2v5 */

#define  SO_ACCEPT	1
#define  SO_BIND	2
#define  SO_CONNECT	3
#define  SO_GETPEERNAME	4
#define  SO_GETSOCKNAME	5
#define  SO_GETSOCKOPT	6
#define  SO_LISTEN	7
#define  SO_RECV	8
#define  SO_RECVFROM	9
#define  SO_SEND	10
#define  SO_SENDTO	11
#define  SO_SETSOCKOPT	12
#define  SO_SHUTDOWN	13
#define  SO_SOCKET	14
#define  SO_SELECT	15
#define  SO_GETIPDOMAIN	16
#define  SO_SETIPDOMAIN	17
#define  SO_ADJTIME	18
#define  SO_SETREUID	19
#define  SO_SETREGID	20
#define  SO_GETTIME	21
#define  SO_SETTIME	22
#define  SO_GETITIMER	23
#define  SO_SETITIMER	24
#define  SO_RECVMSG	25
#define  SO_SENDMSG	26
#define	 SO_SOCKPAIR	27

/*
 * message flags
 */
#define	M_BCAST	0x80000000

/* Definitions and structures used for extracting */
/* the size and/or the contents of kernel tables */

/* Copyin/out values */
#define	GIARG	0x1
#define	CONTI	0x2
#define	GITAB	0x4

struct gi_arg {
	caddr_t   gi_where;
	unsigned  gi_size;
};

#if !defined(_KERNEL) && !defined(INKERNEL) && !defined(_INKERNEL)

#include <sys/cdefs.h>

__BEGIN_DECLS
int     accept __P_((int, struct sockaddr *, int *));
int     bind __P_((int, const struct sockaddr *, int));
int     connect __P_((int, const struct sockaddr *, int));
int     getpeername __P_((int, struct sockaddr *, int *));
int     getsockname __P_((int, struct sockaddr *, int *));
int     getsockopt __P_((int, int, int, void *, int *));
int     setsockopt __P_((int, int, int, const void *, int));
int     listen __P_((int, int));
ssize_t recv __P_((int, void *, size_t, int));
ssize_t recvfrom __P_((int, void *, size_t, int, struct sockaddr *, int *));
int     recvmsg __P_((int, struct msghdr *, int));
ssize_t send __P_((int, const void *, size_t, int));
int     sendmsg __P_((int, const struct msghdr *, int));
ssize_t sendto __P_((int, const void *, size_t, int, const struct sockaddr *, int));
int     shutdown __P_((int, int));
int     socket __P_((int, int, int));
int     socketpair __P_((int, int, int, int[2]));
__END_DECLS

#endif /* !INKERNEL */
#endif /* __sys_socket_h */