-/* System-specific socket constants and types. Generic/4.3 BSD version.
- Copyright (C) 1991, 92, 94, 95, 96, 97, 98 Free Software Foundation, Inc.
+/* System-specific socket constants and types. 4.4 BSD version.
+ Copyright (C) 1991-2023 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 Library General Public License as
- published by the Free Software Foundation; either version 2 of the
+ 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ 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 <https://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
#define __need_size_t
#include <stddef.h>
+#include <bits/wordsize.h>
+#include <bits/types.h>
+
/* Type for length arguments in socket calls. */
-typedef unsigned int socklen_t;
+#ifndef __socklen_t_defined
+typedef __socklen_t socklen_t;
+# define __socklen_t_defined
+#endif
/* Types of sockets. */
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 AF_APPLETALK PF_APPLETALK
#define AF_ROUTE PF_ROUTE
#define AF_LINK PF_LINK
-#define pseudo_AF_XTP PF_XTP
+#ifdef __USE_MISC
+# define pseudo_AF_XTP PF_XTP
+#endif
#define AF_COIP PF_COIP
#define AF_CNT PF_CNT
-#define pseudo_AF_RTIP PF_RTIP
+#ifdef __USE_MISC
+# define pseudo_AF_RTIP PF_RTIP
+#endif
#define AF_IPX PF_IPX
#define AF_SIP PF_SIP
-#define pseudo_AF_PIP PF_PIP
+#ifdef __USE_MISC
+# define pseudo_AF_PIP PF_PIP
+#endif
#define AF_INET6 PF_INET6
#define AF_MAX PF_MAX
+/* Maximum queue length specifiable by listen. */
+#define SOMAXCONN 128 /* 5 on the original 4.4 BSD. */
/* Get the definition of the macro to define the common sockaddr members. */
#include <bits/sockaddr.h>
};
+/* Structure large enough to hold any socket address (with the historical
+ exception of AF_UNIX). */
+#if __WORDSIZE == 64
+# define __ss_aligntype __uint64_t
+#else
+# define __ss_aligntype __uint32_t
+#endif
+#define _SS_PADSIZE \
+ (_SS_SIZE - __SOCKADDR_COMMON_SIZE - sizeof (__ss_aligntype))
+
+struct sockaddr_storage
+ {
+ __SOCKADDR_COMMON (ss_); /* Address family, etc. */
+ char __ss_padding[_SS_PADSIZE];
+ __ss_aligntype __ss_align; /* Force desired alignment. */
+ };
+
+
/* 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
};
`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 __glibc_c99_flexarr_available
+ __extension__ unsigned char __cmsg_data __flexarr; /* Ancillary data. */
+#endif
+ };
+
+/* Ancillary data object manipulation macros. */
+#if __glibc_c99_flexarr_available
+# 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 *) 0)
+
+#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))
+
+/* Given a length, return the additional padding necessary such that
+ len + __CMSG_PADDING(len) == CMSG_ALIGN (len). */
+#define __CMSG_PADDING(len) ((sizeof (size_t) \
+ - ((len) & (sizeof (size_t) - 1))) \
+ & (sizeof (size_t) - 1))
+
+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))
+{
+ /* We may safely assume that __cmsg lies between __mhdr->msg_control and
+ __mhdr->msg_controllen because the user is required to obtain the first
+ cmsg via CMSG_FIRSTHDR, set its length, then obtain subsequent cmsgs
+ via CMSG_NXTHDR, setting lengths along the way. However, we don't yet
+ trust the value of __cmsg->cmsg_len and therefore do not use it in any
+ pointer arithmetic until we check its value. */
+
+ unsigned char * __msg_control_ptr = (unsigned char *) __mhdr->msg_control;
+ unsigned char * __cmsg_ptr = (unsigned char *) __cmsg;
+
+ size_t __size_needed = sizeof (struct cmsghdr)
+ + __CMSG_PADDING (__cmsg->cmsg_len);
+
+ /* The current header is malformed, too small to be a full header. */
+ if ((size_t) __cmsg->cmsg_len < sizeof (struct cmsghdr))
+ return (struct cmsghdr *) 0;
+
+ /* There isn't enough space between __cmsg and the end of the buffer to
+ hold the current cmsg *and* the next one. */
+ if (((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr)
+ < __size_needed)
+ || ((size_t)
+ (__msg_control_ptr + __mhdr->msg_controllen - __cmsg_ptr
+ - __size_needed)
+ < __cmsg->cmsg_len))
+
+ return (struct cmsghdr *) 0;
+
+ /* Now, we trust cmsg_len and can use it to find the next header. */
+ __cmsg = (struct cmsghdr *) ((unsigned char *) __cmsg
+ + CMSG_ALIGN (__cmsg->cmsg_len));
+ 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
+ };
+
+#ifdef __USE_MISC
+/* 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];
+ };
+#endif
/* Protocol number used to manipulate socket-level options
with `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. */
- SO_TYPE = SO_STYLE, /* Compatible name for SO_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. */
projects / thirdparty / glibc.git / blobdiff