Replace generic bits/socket.h with 4.4 file.

3 files changed, 126 insertions, 373 deletions

diff --git a/ChangeLog b/ChangeLog
index d565a692b3..6326ad58a9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2013-08-27  Roland McGrath  <roland@hack.frob.com>
 
+	* sysdeps/unix/bsd/bsd4.4/bits/socket.h: Moved to ...
+	* bits/socket.h: ... here.
+
 	* sysdeps/unix/bsd/bsd4.4/bits/socket.h (enum __socket_type):
 	Add SOCK_CLOEXEC, SOCK_NONBLOCK with values from FreeBSD.
 	(SOCK_MAX, SOCK_TYPE_MASK): New macros.
diff --git a/bits/socket.h b/bits/socket.h
index 7564e2ba0e..78c54a0f9e 100644
--- a/bits/socket.h
+++ b/bits/socket.h
@@ -1,11 +1,11 @@
-/* System-specific socket constants and types.  Generic/4.3 BSD version.
+/* System-specific socket constants and types.  4.4 BSD version.
    Copyright (C) 1991-2013 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
+   modify it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
 
    The GNU C Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -13,22 +13,23 @@
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef __BITS_SOCKET_H
 #define __BITS_SOCKET_H	1
 
-#if !defined _SYS_SOCKET_H && !defined _NETINET_IN_H
+#ifndef _SYS_SOCKET_H
 # error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
 #endif
 
-#include <limits.h>
-#include <bits/types.h>
-
 #define	__need_size_t
+#define __need_NULL
 #include <stddef.h>
 
+#include <limits.h>		/* XXX Is this allowed?  */
+#include <bits/types.h>
+
 /* Type for length arguments in socket calls.  */
 #ifndef __socklen_t_defined
 typedef __socklen_t socklen_t;
@@ -49,9 +50,25 @@ enum __socket_type
 #define SOCK_RAW SOCK_RAW
   SOCK_RDM = 4,			/* Reliably-delivered messages.  */
 #define SOCK_RDM SOCK_RDM
-  SOCK_SEQPACKET = 5		/* Sequenced, reliable, connection-based,
+  SOCK_SEQPACKET = 5,		/* Sequenced, reliable, connection-based,
 				   datagrams of fixed maximum length.  */
 #define SOCK_SEQPACKET SOCK_SEQPACKET
+
+#define SOCK_MAX (SOCK_SEQPACKET + 1)
+  /* Mask which covers at least up to SOCK_MASK-1.
+     The remaining bits are used as flags. */
+#define SOCK_TYPE_MASK 0xf
+
+  /* Flags to be ORed into the type parameter of socket and socketpair and
+     used for the flags parameter of accept4.  */
+
+  SOCK_CLOEXEC = 0x10000000,	/* Atomically set close-on-exec flag for the
+				   new descriptor(s).  */
+#define SOCK_CLOEXEC SOCK_CLOEXEC
+
+  SOCK_NONBLOCK = 0x20000000	/* Atomically mark descriptor(s) as
+				   non-blocking.  */
+#define SOCK_NONBLOCK SOCK_NONBLOCK
 };
 
 /* Protocol families.  */
@@ -120,6 +137,8 @@ enum __socket_type
 #define AF_INET6	PF_INET6
 #define	AF_MAX		PF_MAX
 
+/* Maximum queue length specifiable by listen.  */
+#define SOMAXCONN	128	/* 5 on the origional 4.4 BSD.  */
 
 /* Get the definition of the macro to define the common sockaddr members.  */
 #include <bits/sockaddr.h>
@@ -167,8 +186,10 @@ enum
 #define MSG_CTRUNC MSG_CTRUNC
     MSG_WAITALL		= 0x40,	/* Wait for full request or error.  */
 #define MSG_WAITALL MSG_WAITALL
-    MSG_DONTWAIT	= 0x80	/* This message should be nonblocking.  */
+    MSG_DONTWAIT	= 0x80,	/* This message should be nonblocking.  */
 #define MSG_DONTWAIT MSG_DONTWAIT
+    MSG_NOSIGNAL	= 0x0400	/* Do not generate SIGPIPE on EPIPE.  */
+#define MSG_NOSIGNAL MSG_NOSIGNAL
   };
 
 
@@ -176,18 +197,105 @@ enum
    `sendmsg' and received by `recvmsg'.  */
 struct msghdr
   {
-    __ptr_t msg_name;		/* Address to send to/receive from.  */
+    void *msg_name;		/* Address to send to/receive from.  */
     socklen_t msg_namelen;	/* Length of address data.  */
 
     struct iovec *msg_iov;	/* Vector of data to send/receive into.  */
     int msg_iovlen;		/* Number of elements in the vector.  */
 
-    __ptr_t msg_accrights;	/* Access rights information.  */
-    socklen_t msg_accrightslen;	/* Length of access rights information.  */
+    void *msg_control;		/* Ancillary data (eg BSD filedesc passing). */
+    socklen_t msg_controllen;	/* Ancillary data buffer length.  */
 
     int msg_flags;		/* Flags in received message.  */
   };
 
+/* Structure used for storage of ancillary data object information.  */
+struct cmsghdr
+  {
+    socklen_t cmsg_len;		/* Length of data in cmsg_data plus length
+				   of cmsghdr structure.  */
+    int cmsg_level;		/* Originating protocol.  */
+    int cmsg_type;		/* Protocol specific type.  */
+#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
+    __extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data.  */
+#endif
+  };
+
+/* Ancillary data object manipulation macros.  */
+#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
+# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
+#else
+# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
+#endif
+
+#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
+
+#define CMSG_FIRSTHDR(mhdr) \
+  ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr)		      \
+   ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL)
+
+#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
+			   & (size_t) ~(sizeof (size_t) - 1))
+#define CMSG_SPACE(len) (CMSG_ALIGN (len) \
+			 + CMSG_ALIGN (sizeof (struct cmsghdr)))
+#define CMSG_LEN(len)   (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
+
+extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
+				      struct cmsghdr *__cmsg) __THROW;
+#ifdef __USE_EXTERN_INLINES
+# ifndef _EXTERN_INLINE
+#  define _EXTERN_INLINE __extern_inline
+# endif
+_EXTERN_INLINE struct cmsghdr *
+__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
+{
+  if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
+    /* The kernel header does this so there may be a reason.  */
+    return NULL;
+
+  __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+			       + CMSG_ALIGN (__cmsg->cmsg_len));
+  if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
+					+ __mhdr->msg_controllen)
+      || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
+	  > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
+    /* No more entries.  */
+    return NULL;
+  return __cmsg;
+}
+#endif	/* Use `extern inline'.  */
+
+/* Socket level message types.  */
+enum
+  {
+    SCM_RIGHTS = 0x01,		/* Access rights (array of int).  */
+#define SCM_RIGHTS SCM_RIGHTS
+    SCM_TIMESTAMP = 0x02,	/* Timestamp (struct timeval).  */
+#define SCM_TIMESTAMP SCM_TIMESTAMP
+    SCM_CREDS = 0x03		/* Process creds (struct cmsgcred).  */
+#define SCM_CREDS SCM_CREDS
+  };
+
+/* Unfortunately, BSD practice dictates this structure be of fixed size.
+   If there are more than CMGROUP_MAX groups, the list is truncated.
+   (On GNU systems, the `cmcred_euid' field is just the first in the
+   list of effective UIDs.)  */
+#define CMGROUP_MAX	16
+
+/* Structure delivered by SCM_CREDS.  This describes the identity of the
+   sender of the data simultaneously received on the socket.  By BSD
+   convention, this is included only when a sender on a AF_LOCAL socket
+   sends cmsg data of this type and size; the sender's structure is
+   ignored, and the system fills in the various IDs of the sender process.  */
+struct cmsgcred
+  {
+    __pid_t cmcred_pid;
+    __uid_t cmcred_uid;
+    __uid_t cmcred_euid;
+    __gid_t cmcred_gid;
+    int cmcred_ngroups;
+    __gid_t cmcred_groups[CMGROUP_MAX];
+  };
 
 /* Protocol number used to manipulate socket-level options
    with `getsockopt' and `setsockopt'.  */
diff --git a/sysdeps/unix/bsd/bsd4.4/bits/socket.h b/sysdeps/unix/bsd/bsd4.4/bits/socket.h
deleted file mode 100644
index 78c54a0f9e..0000000000
--- a/sysdeps/unix/bsd/bsd4.4/bits/socket.h
+++ /dev/null
@@ -1,358 +0,0 @@
-/* System-specific socket constants and types.  4.4 BSD version.
-   Copyright (C) 1991-2013 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation; either version 2.1 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If
-   not, see <http://www.gnu.org/licenses/>.  */
-
-#ifndef __BITS_SOCKET_H
-#define __BITS_SOCKET_H	1
-
-#ifndef _SYS_SOCKET_H
-# error "Never include <bits/socket.h> directly; use <sys/socket.h> instead."
-#endif
-
-#define	__need_size_t
-#define __need_NULL
-#include <stddef.h>
-
-#include <limits.h>		/* XXX Is this allowed?  */
-#include <bits/types.h>
-
-/* Type for length arguments in socket calls.  */
-#ifndef __socklen_t_defined
-typedef __socklen_t socklen_t;
-# define __socklen_t_defined
-#endif
-
-
-/* Types of sockets.  */
-enum __socket_type
-{
-  SOCK_STREAM = 1,		/* Sequenced, reliable, connection-based
-				   byte streams.  */
-#define SOCK_STREAM SOCK_STREAM
-  SOCK_DGRAM = 2,		/* Connectionless, unreliable datagrams
-				   of fixed maximum length.  */
-#define SOCK_DGRAM SOCK_DGRAM
-  SOCK_RAW = 3,			/* Raw protocol interface.  */
-#define SOCK_RAW SOCK_RAW
-  SOCK_RDM = 4,			/* Reliably-delivered messages.  */
-#define SOCK_RDM SOCK_RDM
-  SOCK_SEQPACKET = 5,		/* Sequenced, reliable, connection-based,
-				   datagrams of fixed maximum length.  */
-#define SOCK_SEQPACKET SOCK_SEQPACKET
-
-#define SOCK_MAX (SOCK_SEQPACKET + 1)
-  /* Mask which covers at least up to SOCK_MASK-1.
-     The remaining bits are used as flags. */
-#define SOCK_TYPE_MASK 0xf
-
-  /* Flags to be ORed into the type parameter of socket and socketpair and
-     used for the flags parameter of accept4.  */
-
-  SOCK_CLOEXEC = 0x10000000,	/* Atomically set close-on-exec flag for the
-				   new descriptor(s).  */
-#define SOCK_CLOEXEC SOCK_CLOEXEC
-
-  SOCK_NONBLOCK = 0x20000000	/* Atomically mark descriptor(s) as
-				   non-blocking.  */
-#define SOCK_NONBLOCK SOCK_NONBLOCK
-};
-
-/* Protocol families.  */
-#define	PF_UNSPEC	0	/* Unspecified.  */
-#define	PF_LOCAL	1	/* Local to host (pipes and file-domain).  */
-#define	PF_UNIX		PF_LOCAL /* Old BSD name for PF_LOCAL.  */
-#define	PF_FILE		PF_LOCAL /* POSIX name for PF_LOCAL.  */
-#define	PF_INET		2	/* IP protocol family.  */
-#define	PF_IMPLINK	3	/* ARPAnet IMP protocol.  */
-#define	PF_PUP		4	/* PUP protocols.  */
-#define	PF_CHAOS	5	/* MIT Chaos protocols.  */
-#define	PF_NS		6	/* Xerox NS protocols.  */
-#define	PF_ISO		7	/* ISO protocols.  */
-#define	PF_OSI		PF_ISO
-#define	PF_ECMA		8	/* ECMA protocols.  */
-#define	PF_DATAKIT	9	/* AT&T Datakit protocols.  */
-#define	PF_CCITT	10	/* CCITT protocols (X.25 et al).  */
-#define	PF_SNA		11	/* IBM SNA protocol.  */
-#define	PF_DECnet	12	/* DECnet protocols.  */
-#define	PF_DLI		13	/* Direct data link interface.  */
-#define	PF_LAT		14	/* DEC Local Area Transport protocol.  */
-#define	PF_HYLINK	15	/* NSC Hyperchannel protocol.  */
-#define	PF_APPLETALK	16	/* Don't use this.  */
-#define	PF_ROUTE	17	/* Internal Routing Protocol.  */
-#define	PF_LINK		18	/* Link layer interface.  */
-#define	PF_XTP		19	/* eXpress Transfer Protocol (no AF).  */
-#define	PF_COIP		20	/* Connection-oriented IP, aka ST II.  */
-#define	PF_CNT		21	/* Computer Network Technology.  */
-#define PF_RTIP		22	/* Help Identify RTIP packets.  **/
-#define	PF_IPX		23	/* Novell Internet Protocol.  */
-#define	PF_SIP		24	/* Simple Internet Protocol.  */
-#define PF_PIP		25	/* Help Identify PIP packets.  */
-#define PF_INET6	26	/* IP version 6.  */
-#define	PF_MAX		27
-
-/* Address families.  */
-#define	AF_UNSPEC	PF_UNSPEC
-#define	AF_LOCAL	PF_LOCAL
-#define	AF_UNIX		PF_UNIX
-#define	AF_FILE		PF_FILE
-#define	AF_INET		PF_INET
-#define	AF_IMPLINK	PF_IMPLINK
-#define	AF_PUP		PF_PUP
-#define	AF_CHAOS	PF_CHAOS
-#define	AF_NS		PF_NS
-#define	AF_ISO		PF_ISO
-#define	AF_OSI		PF_OSI
-#define	AF_ECMA		PF_ECMA
-#define	AF_DATAKIT	PF_DATAKIT
-#define	AF_CCITT	PF_CCITT
-#define	AF_SNA		PF_SNA
-#define	AF_DECnet	PF_DECnet
-#define	AF_DLI		PF_DLI
-#define	AF_LAT		PF_LAT
-#define	AF_HYLINK	PF_HYLINK
-#define	AF_APPLETALK	PF_APPLETALK
-#define	AF_ROUTE	PF_ROUTE
-#define	AF_LINK		PF_LINK
-#define	pseudo_AF_XTP	PF_XTP
-#define	AF_COIP		PF_COIP
-#define	AF_CNT		PF_CNT
-#define pseudo_AF_RTIP	PF_RTIP
-#define	AF_IPX		PF_IPX
-#define	AF_SIP		PF_SIP
-#define pseudo_AF_PIP	PF_PIP
-#define AF_INET6	PF_INET6
-#define	AF_MAX		PF_MAX
-
-/* Maximum queue length specifiable by listen.  */
-#define SOMAXCONN	128	/* 5 on the origional 4.4 BSD.  */
-
-/* Get the definition of the macro to define the common sockaddr members.  */
-#include <bits/sockaddr.h>
-
-/* Structure describing a generic socket address.  */
-struct sockaddr
-  {
-    __SOCKADDR_COMMON (sa_);	/* Common data: address family and length.  */
-    char sa_data[14];		/* Address data.  */
-  };
-
-
-/* Structure large enough to hold any socket address (with the historical
-   exception of AF_UNIX).  We reserve 128 bytes.  */
-#if ULONG_MAX > 0xffffffff
-# define __ss_aligntype	__uint64_t
-#else
-# define __ss_aligntype	__uint32_t
-#endif
-#define _SS_SIZE	128
-#define _SS_PADSIZE	(_SS_SIZE - (2 * sizeof (__ss_aligntype)))
-
-struct sockaddr_storage
-  {
-    __SOCKADDR_COMMON (ss_);	/* Address family, etc.  */
-    __ss_aligntype __ss_align;	/* Force desired alignment.  */
-    char __ss_padding[_SS_PADSIZE];
-  };
-
-
-/* Bits in the FLAGS argument to `send', `recv', et al.  */
-enum
-  {
-    MSG_OOB		= 0x01,	/* Process out-of-band data.  */
-#define MSG_OOB MSG_OOB
-    MSG_PEEK		= 0x02,	/* Peek at incoming messages.  */
-#define MSG_PEEK MSG_PEEK
-    MSG_DONTROUTE	= 0x04,	/* Don't use local routing.  */
-#define MSG_DONTROUTE MSG_DONTROUTE
-    MSG_EOR		= 0x08,	/* Data completes record.  */
-#define MSG_EOR MSG_EOR
-    MSG_TRUNC		= 0x10,	/* Data discarded before delivery.  */
-#define MSG_TRUNC MSG_TRUNC
-    MSG_CTRUNC		= 0x20,	/* Control data lost before delivery.  */
-#define MSG_CTRUNC MSG_CTRUNC
-    MSG_WAITALL		= 0x40,	/* Wait for full request or error.  */
-#define MSG_WAITALL MSG_WAITALL
-    MSG_DONTWAIT	= 0x80,	/* This message should be nonblocking.  */
-#define MSG_DONTWAIT MSG_DONTWAIT
-    MSG_NOSIGNAL	= 0x0400	/* Do not generate SIGPIPE on EPIPE.  */
-#define MSG_NOSIGNAL MSG_NOSIGNAL
-  };
-
-
-/* Structure describing messages sent by
-   `sendmsg' and received by `recvmsg'.  */
-struct msghdr
-  {
-    void *msg_name;		/* Address to send to/receive from.  */
-    socklen_t msg_namelen;	/* Length of address data.  */
-
-    struct iovec *msg_iov;	/* Vector of data to send/receive into.  */
-    int msg_iovlen;		/* Number of elements in the vector.  */
-
-    void *msg_control;		/* Ancillary data (eg BSD filedesc passing). */
-    socklen_t msg_controllen;	/* Ancillary data buffer length.  */
-
-    int msg_flags;		/* Flags in received message.  */
-  };
-
-/* Structure used for storage of ancillary data object information.  */
-struct cmsghdr
-  {
-    socklen_t cmsg_len;		/* Length of data in cmsg_data plus length
-				   of cmsghdr structure.  */
-    int cmsg_level;		/* Originating protocol.  */
-    int cmsg_type;		/* Protocol specific type.  */
-#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
-    __extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data.  */
-#endif
-  };
-
-/* Ancillary data object manipulation macros.  */
-#if (!defined __STRICT_ANSI__ && __GNUC__ >= 2) || __STDC_VERSION__ >= 199901L
-# define CMSG_DATA(cmsg) ((cmsg)->__cmsg_data)
-#else
-# define CMSG_DATA(cmsg) ((unsigned char *) ((struct cmsghdr *) (cmsg) + 1))
-#endif
-
-#define CMSG_NXTHDR(mhdr, cmsg) __cmsg_nxthdr (mhdr, cmsg)
-
-#define CMSG_FIRSTHDR(mhdr) \
-  ((size_t) (mhdr)->msg_controllen >= sizeof (struct cmsghdr)		      \
-   ? (struct cmsghdr *) (mhdr)->msg_control : (struct cmsghdr *) NULL)
-
-#define CMSG_ALIGN(len) (((len) + sizeof (size_t) - 1) \
-			   & (size_t) ~(sizeof (size_t) - 1))
-#define CMSG_SPACE(len) (CMSG_ALIGN (len) \
-			 + CMSG_ALIGN (sizeof (struct cmsghdr)))
-#define CMSG_LEN(len)   (CMSG_ALIGN (sizeof (struct cmsghdr)) + (len))
-
-extern struct cmsghdr *__cmsg_nxthdr (struct msghdr *__mhdr,
-				      struct cmsghdr *__cmsg) __THROW;
-#ifdef __USE_EXTERN_INLINES
-# ifndef _EXTERN_INLINE
-#  define _EXTERN_INLINE __extern_inline
-# endif
-_EXTERN_INLINE struct cmsghdr *
-__NTH (__cmsg_nxthdr (struct msghdr *__mhdr, struct cmsghdr *__cmsg))
-{
-  if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
-    /* The kernel header does this so there may be a reason.  */
-    return NULL;
-
-  __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
-			       + CMSG_ALIGN (__cmsg->cmsg_len));
-  if ((unsigned char *) (__cmsg + 1) > ((unsigned char *) __mhdr->msg_control
-					+ __mhdr->msg_controllen)
-      || ((unsigned char *) __cmsg + CMSG_ALIGN (__cmsg->cmsg_len)
-	  > ((unsigned char *) __mhdr->msg_control + __mhdr->msg_controllen)))
-    /* No more entries.  */
-    return NULL;
-  return __cmsg;
-}
-#endif	/* Use `extern inline'.  */
-
-/* Socket level message types.  */
-enum
-  {
-    SCM_RIGHTS = 0x01,		/* Access rights (array of int).  */
-#define SCM_RIGHTS SCM_RIGHTS
-    SCM_TIMESTAMP = 0x02,	/* Timestamp (struct timeval).  */
-#define SCM_TIMESTAMP SCM_TIMESTAMP
-    SCM_CREDS = 0x03		/* Process creds (struct cmsgcred).  */
-#define SCM_CREDS SCM_CREDS
-  };
-
-/* Unfortunately, BSD practice dictates this structure be of fixed size.
-   If there are more than CMGROUP_MAX groups, the list is truncated.
-   (On GNU systems, the `cmcred_euid' field is just the first in the
-   list of effective UIDs.)  */
-#define CMGROUP_MAX	16
-
-/* Structure delivered by SCM_CREDS.  This describes the identity of the
-   sender of the data simultaneously received on the socket.  By BSD
-   convention, this is included only when a sender on a AF_LOCAL socket
-   sends cmsg data of this type and size; the sender's structure is
-   ignored, and the system fills in the various IDs of the sender process.  */
-struct cmsgcred
-  {
-    __pid_t cmcred_pid;
-    __uid_t cmcred_uid;
-    __uid_t cmcred_euid;
-    __gid_t cmcred_gid;
-    int cmcred_ngroups;
-    __gid_t cmcred_groups[CMGROUP_MAX];
-  };
-
-/* Protocol number used to manipulate socket-level options
-   with `getsockopt' and `setsockopt'.  */
-#define	SOL_SOCKET	0xffff
-
-/* Socket-level options for `getsockopt' and `setsockopt'.  */
-enum
-  {
-    SO_DEBUG = 0x0001,		/* Record debugging information.  */
-#define SO_DEBUG SO_DEBUG
-    SO_ACCEPTCONN = 0x0002,	/* Accept connections on socket.  */
-#define SO_ACCEPTCONN SO_ACCEPTCONN
-    SO_REUSEADDR = 0x0004,	/* Allow reuse of local addresses.  */
-#define SO_REUSEADDR SO_REUSEADDR
-    SO_KEEPALIVE = 0x0008,	/* Keep connections alive and send
-				   SIGPIPE when they die.  */
-#define SO_KEEPALIVE SO_KEEPALIVE
-    SO_DONTROUTE = 0x0010,	/* Don't do local routing.  */
-#define SO_DONTROUTE SO_DONTROUTE
-    SO_BROADCAST = 0x0020,	/* Allow transmission of
-				   broadcast messages.  */
-#define SO_BROADCAST SO_BROADCAST
-    SO_USELOOPBACK = 0x0040,	/* Use the software loopback to avoid
-				   hardware use when possible.  */
-#define SO_USELOOPBACK SO_USELOOPBACK
-    SO_LINGER = 0x0080,		/* Block on close of a reliable
-				   socket to transmit pending data.  */
-#define SO_LINGER SO_LINGER
-    SO_OOBINLINE = 0x0100,	/* Receive out-of-band data in-band.  */
-#define SO_OOBINLINE SO_OOBINLINE
-    SO_REUSEPORT = 0x0200,	/* Allow local address and port reuse.  */
-#define SO_REUSEPORT SO_REUSEPORT
-    SO_SNDBUF = 0x1001,		/* Send buffer size.  */
-#define SO_SNDBUF SO_SNDBUF
-    SO_RCVBUF = 0x1002,		/* Receive buffer.  */
-#define SO_RCVBUF SO_RCVBUF
-    SO_SNDLOWAT = 0x1003,	/* Send low-water mark.  */
-#define SO_SNDLOWAT SO_SNDLOWAT
-    SO_RCVLOWAT = 0x1004,	/* Receive low-water mark.  */
-#define SO_RCVLOWAT SO_RCVLOWAT
-    SO_SNDTIMEO = 0x1005,	/* Send timeout.  */
-#define SO_SNDTIMEO SO_SNDTIMEO
-    SO_RCVTIMEO = 0x1006,	/* Receive timeout.  */
-#define SO_RCVTIMEO SO_RCVTIMEO
-    SO_ERROR = 0x1007,		/* Get and clear error status.  */
-#define SO_ERROR SO_ERROR
-    SO_STYLE = 0x1008,		/* Get socket connection style.  */
-#define SO_STYLE SO_STYLE
-    SO_TYPE = SO_STYLE		/* Compatible name for SO_STYLE.  */
-#define SO_TYPE SO_TYPE
-  };
-
-/* Structure used to manipulate the SO_LINGER option.  */
-struct linger
-  {
-    int l_onoff;		/* Nonzero to linger on close.  */
-    int l_linger;		/* Time to linger.  */
-  };
-
-#endif	/* bits/socket.h */