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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:35 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:35 -0800
commitf721e3ac031f892af46f255a47d7f54a91317b30 (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /sockets.h
parentbae1bc39312d5019bd9a5b8d840a529213a69a17 (diff)
downloadexternal_qemu-f721e3ac031f892af46f255a47d7f54a91317b30.zip
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auto import from //depot/cupcake/@135843
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-/* Copyright (C) 2007-2008 The Android Open Source Project
-**
-** This software is licensed under the terms of the GNU General Public
-** License version 2, as published by the Free Software Foundation, and
-** may be copied, distributed, and modified under those terms.
-**
-** This program 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 General Public License for more details.
-*/
-/* headers to use the BSD sockets */
-#ifndef QEMU_SOCKET_H
-#define QEMU_SOCKET_H
-
-#include <stddef.h>
-#include <stdint.h>
-#include <errno.h>
-
-/* we're going to hide the implementation details of sockets behind
- * a simple wrapper interface declared here.
- *
- * all socket operations set the global 'errno' variable on error.
- * this is unlike Winsock which instead modifies another internal
- * variable accessed through WSAGetLastError() and WSASetLastError()
- */
-
-/* the wrapper will convert any Winsock error message into an errno
- * code for you. There are however a few standard Unix error codes
- * that are not defined by the MS C library headers, so we add them
- * here. We use the official Winsock error codes, which are documented
- * even though we don't want to include the Winsock headers
- */
-#ifdef _WIN32
-# ifndef EINTR
-# define EINTR 10004
-# endif
-# ifndef EWOULDBLOCK
-# define EWOULDBLOCK 10035
-# endif
-# ifndef EINPROGRESS
-# define EINPROGRESS 10036
-# endif
-# ifndef EALREADY
-# define EALREADY 10037
-# endif
-# ifndef EDESTADDRREQ
-# define EDESTADDRREQ 10039
-# endif
-# ifndef EMSGSIZE
-# define EMSGSIZE 10040
-# endif
-# ifndef EPROTOTYPE
-# define EPROTOTYPE 10041
-# endif
-# ifndef ENOPROTOOPT
-# define ENOPROTOOPT 10042
-# endif
-# ifndef EADDRINUSE
-# define EADDRINUSE 10048
-# endif
-# ifndef EADDRNOTAVAIL
-# define EADDRNOTAVAIL 10049
-# endif
-# ifndef ENETDOWN
-# define ENETDOWN 10050
-# endif
-# ifndef ENETUNREACH
-# define ENETUNREACH 10051
-# endif
-# ifndef ENETRESET
-# define ENETRESET 10052
-# endif
-# ifndef ECONNABORTED
-# define ECONNABORTED 10053
-# endif
-# ifndef ECONNRESET
-# define ECONNRESET 10054
-# endif
-# ifndef ENOBUFS
-# define ENOBUFS 10055
-# endif
-# ifndef EISCONN
-# define EISCONN 10056
-# endif
-# ifndef ENOTCONN
-# define ENOTCONN 10057
-# endif
-# ifndef ESHUTDOWN
-# define ESHUTDOWN 10058
-# endif
-# ifndef ETOOMANYREFS
-# define ETOOMANYREFS 10059
-# endif
-# ifndef ETIMEDOUT
-# define ETIMEDOUT 10060
-# endif
-# ifndef ECONNREFUSED
-# define ECONNREFUSED 10061
-# endif
-# ifndef ELOOP
-# define ELOOP 10062
-# endif
-# ifndef EHOSTDOWN
-# define EHOSTDOWN 10064
-# endif
-# ifndef EHOSTUNREACH
-# define EHOSTUNREACH 10065
-# endif
-#endif /* _WIN32 */
-
-/* Define 'errno_str' as a handy macro to return the string
- * corresponding to a given errno code. On Unix, this is
- * equivalent to strerror(errno), but on Windows, this will
- * take care of Winsock-originated errors as well.
- */
-#ifdef _WIN32
- extern const char* _errno_str(void);
-# define errno_str _errno_str()
-#else
-# define errno_str strerror(errno)
-#endif
-
-/* always enable IPv6 sockets for now.
- * the QEMU internal router is not capable of
- * supporting them, but we plan to replace it
- * with something better in the future.
- */
-#define HAVE_IN6_SOCKETS 1
-
-/* Unix sockets are not available on Win32 */
-#ifndef _WIN32
-# define HAVE_UNIX_SOCKETS 1
-#endif
-
-/* initialize the socket sub-system. this must be called before
- * using any of the declarations below.
- */
-int socket_init( void );
-
-/* return the name of the current host */
-char* host_name( void );
-
-/* supported socket types */
-typedef enum {
- SOCKET_DGRAM = 0,
- SOCKET_STREAM
-} SocketType;
-
-/* supported socket families */
-typedef enum {
- SOCKET_UNSPEC,
- SOCKET_INET,
- SOCKET_IN6,
- SOCKET_UNIX
-} SocketFamily;
-
-/* Generic socket address structure. Note that for Unix
- * sockets, the path is stored in a heap-allocated block,
- * unless the 'owner' field is cleared. If this is the case,
- */
-typedef struct {
- SocketFamily family;
- union {
- struct {
- uint16_t port;
- uint32_t address;
- } inet;
- struct {
- uint16_t port;
- uint8_t address[16];
- } in6;
- struct {
- int owner;
- const char* path;
- } _unix;
- } u;
-} SockAddress;
-
-#define SOCK_ADDRESS_INET_ANY 0x00000000
-#define SOCK_ADDRESS_INET_LOOPBACK 0x7f000001
-
-/* initialize a new IPv4 socket address, the IP address and port are
- * in host endianess.
- */
-void sock_address_init_inet( SockAddress* a, uint32_t ip, uint16_t port );
-
-/* Initialize an IPv6 socket address, the address is in network order
- * and the port in host endianess.
- */
-#if HAVE_IN6_SOCKETS
-void sock_address_init_in6 ( SockAddress* a, const uint8_t* ip6[16], uint16_t port );
-#endif
-
-/* Intialize a Unix socket address, this will copy the 'path' string into the
- * heap. You need to call sock_address_done() to release the copy
- */
-#if HAVE_UNIX_SOCKETS
-void sock_address_init_unix( SockAddress* a, const char* path );
-#endif
-
-/* Finalize a socket address, only needed for now for Unix addresses */
-void sock_address_done( SockAddress* a );
-
-int sock_address_equal( const SockAddress* a, const SockAddress* b );
-
-/* THIS SHOULD DISAPPEAR SOON - TRANSITIONAL HELPER */
-int sock_address_to_bsd( const SockAddress* a, void* sa, size_t* salen );
-int sock_address_from_bsd( SockAddress* a, const void* sa, size_t salen );
-int sock_address_to_inet( SockAddress* a, int *paddr_ip, int *paddr_port );
-
-/* return a static string describing the address */
-const char* sock_address_to_string( const SockAddress* a );
-
-/* return the port number of a given socket address, or -1 if it's a Unix one */
-int sock_address_get_port( const SockAddress* a );
-
-/* set the port number of a given socket address, don't do anything for Unix ones */
-void sock_address_set_port( SockAddress* a, uint16_t port );
-
-/* return the path of a given Unix socket, returns NULL for non-Unix ones */
-const char* sock_address_get_path( const SockAddress* a );
-
-/* return the inet address, or -1 if it's not SOCKET_INET */
-int sock_address_get_ip( const SockAddress* a );
-
-/* bufprint a socket address into a human-readable string */
-char* bufprint_sock_address( char* p, char* end, const SockAddress* a );
-
-/* resolve a hostname or decimal IPv4/IPv6 address into a socket address.
- * returns 0 on success, or -1 on failure */
-int sock_address_init_resolve( SockAddress* a, const char* hostname, uint16_t port, int preferIn6 );
-
-/* create a new socket, return the socket number of -1 on failure */
-int socket_create( SocketFamily family, SocketType type );
-
-/* create a new socket intended for IPv4 communication. returns the socket number,
- * or -1 on failure.
- */
-int socket_create_inet( SocketType type );
-
-/* create a new socket intended for IPv6 communication. returns the socket number,
- * or -1 on failure.
- */
-#if HAVE_IN6_SOCKETS
-int socket_create_in6 ( SocketType type );
-#endif
-
-/* create a unix/local domain socket. returns the socket number,
- * or -1 on failure.
- */
-#if HAVE_UNIX_SOCKETS
-int socket_create_unix( SocketType type );
-#endif
-
-/* return the type of a given socket */
-SocketType socket_get_type(int fd);
-
-/* set SO_REUSEADDR on Unix, SO_EXCLUSIVEADDR on Windows */
-int socket_set_xreuseaddr(int fd);
-
-/* set socket in non-blocking mode */
-int socket_set_nonblock(int fd);
-
-/* set socket in blocking mode */
-int socket_set_blocking(int fd);
-
-/* disable the TCP Nagle algorithm for lower latency */
-int socket_set_nodelay(int fd);
-
-/* send OOB data inline for this socket */
-int socket_set_oobinline(int fd);
-
-/* close an opened socket. Note that this is unlike the Unix 'close' because:
- * - it will properly shutdown the socket in the background
- * - it does not modify errno
- */
-void socket_close( int fd );
-
-/* the following functions are equivalent to the BSD sockets ones
- */
-int socket_recv ( int fd, void* buf, int buflen );
-int socket_recvfrom( int fd, void* buf, int buflen, SockAddress* from );
-
-int socket_send ( int fd, const void* buf, int buflen );
-int socket_send_oob( int fd, const void* buf, int buflen );
-int socket_sendto( int fd, const void* buf, int buflen, const SockAddress* to );
-
-int socket_connect( int fd, const SockAddress* address );
-int socket_bind( int fd, const SockAddress* address );
-int socket_get_address( int fd, SockAddress* address );
-int socket_listen( int fd, int backlog );
-int socket_accept( int fd, SockAddress* address );
-
-/* returns the number of bytes that can be read from a socket */
-int socket_can_read( int fd );
-
-/* this call creates a pair of non-blocking sockets connected
- * to each other. this is equivalent to calling the Unix function:
- * socketpair(AF_LOCAL,SOCK_STREAM,0,&fds)
- *
- * on Windows, this will use a pair of TCP loopback sockets instead
- * returns 0 on success, -1 on error.
- */
-int socket_pair(int *fd1, int *fd2);
-
-/* create a server socket listening on the host's loopback interface */
-int socket_loopback_server( int port, SocketType type );
-
-/* connect to a port on the host's loopback interface */
-int socket_loopback_client( int port, SocketType type );
-
-/* create a server socket listening to a Unix domain path */
-#if HAVE_UNIX_SOCKETS
-int socket_unix_server( const char* name, SocketType type );
-#endif
-
-/* create a Unix sockets and connects it to a Unix server */
-#if HAVE_UNIX_SOCKETS
-int socket_unix_client( const char* name, SocketType type );
-#endif
-
-/* create an IPv4 client socket and connect it to a given host */
-int socket_network_client( const char* host, int port, SocketType type );
-
-/* create an IPv4 socket and binds it to a given port of the host's interface */
-int socket_anyaddr_server( int port, SocketType type );
-
-/* accept a connection from the host's any interface, return the new socket
- * descriptor or -1 */
-int socket_accept_any( int server_fd );
-
-
-int socket_mcast_inet_add_membership( int s, uint32_t ip );
-int socket_mcast_inet_drop_membership( int s, uint32_t ip );
-int socket_mcast_inet_set_loop( int s, int enabled );
-int socket_mcast_inet_set_ttl( int s, int ttl );
-
-#endif /* QEMU_SOCKET_H */