1 /* headers to use the BSD sockets */ 2 3 #ifndef QEMU_SOCKETS_H 4 #define QEMU_SOCKETS_H 5 6 #ifdef _WIN32 7 8 int inet_aton(const char *cp, struct in_addr *ia); 9 10 #endif /* !_WIN32 */ 11 12 #include "qapi/qapi-types-sockets.h" 13 14 /* misc helpers */ 15 bool fd_is_socket(int fd); 16 int qemu_socket(int domain, int type, int protocol); 17 18 /** 19 * qemu_socketpair: 20 * @domain: specifies a communication domain, such as PF_UNIX 21 * @type: specifies the socket type. 22 * @protocol: specifies a particular protocol to be used with the socket 23 * @sv: an array to store the pair of socket created 24 * 25 * Creates an unnamed pair of connected sockets in the specified domain, 26 * of the specified type, and using the optionally specified protocol. 27 * And automatically set the close-on-exec flags on the returned sockets 28 * 29 * Return 0 on success. 30 */ 31 int qemu_socketpair(int domain, int type, int protocol, int sv[2]); 32 33 int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen); 34 /* 35 * A variant of send(2) which handles partial send. 36 * 37 * Return the number of bytes transferred over the socket. 38 * Set errno if fewer than `count' bytes are sent. 39 * 40 * This function don't work with non-blocking socket's. 41 * Any of the possibilities with non-blocking socket's is bad: 42 * - return a short write (then name is wrong) 43 * - busy wait adding (errno == EAGAIN) to the loop 44 */ 45 ssize_t qemu_send_full(int s, const void *buf, size_t count) 46 G_GNUC_WARN_UNUSED_RESULT; 47 int socket_set_cork(int fd, int v); 48 int socket_set_nodelay(int fd); 49 void qemu_socket_set_block(int fd); 50 int qemu_socket_try_set_nonblock(int fd); 51 void qemu_socket_set_nonblock(int fd); 52 int socket_set_fast_reuse(int fd); 53 54 #ifdef WIN32 55 /* Windows has different names for the same constants with the same values */ 56 #define SHUT_RD 0 57 #define SHUT_WR 1 58 #define SHUT_RDWR 2 59 #endif 60 61 int inet_ai_family_from_address(InetSocketAddress *addr, 62 Error **errp); 63 int inet_parse(InetSocketAddress *addr, const char *str, Error **errp); 64 int inet_connect_saddr(InetSocketAddress *saddr, Error **errp); 65 66 NetworkAddressFamily inet_netfamily(int family); 67 68 int unix_listen(const char *path, Error **errp); 69 int unix_connect(const char *path, Error **errp); 70 71 char *socket_uri(SocketAddress *addr); 72 SocketAddress *socket_parse(const char *str, Error **errp); 73 int socket_connect(SocketAddress *addr, Error **errp); 74 int socket_listen(SocketAddress *addr, int num, Error **errp); 75 void socket_listen_cleanup(int fd, Error **errp); 76 int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp); 77 78 /* Old, ipv4 only bits. Don't use for new code. */ 79 int convert_host_port(struct sockaddr_in *saddr, const char *host, 80 const char *port, Error **errp); 81 int parse_host_port(struct sockaddr_in *saddr, const char *str, 82 Error **errp); 83 int socket_init(void); 84 85 /** 86 * socket_sockaddr_to_address: 87 * @sa: socket address struct 88 * @salen: size of @sa struct 89 * @errp: pointer to uninitialized error object 90 * 91 * Get the string representation of the socket 92 * address. A pointer to the allocated address information 93 * struct will be returned, which the caller is required to 94 * release with a call qapi_free_SocketAddress() when no 95 * longer required. 96 * 97 * Returns: the socket address struct, or NULL on error 98 */ 99 SocketAddress * 100 socket_sockaddr_to_address(struct sockaddr_storage *sa, 101 socklen_t salen, 102 Error **errp); 103 104 /** 105 * socket_local_address: 106 * @fd: the socket file handle 107 * @errp: pointer to uninitialized error object 108 * 109 * Get the string representation of the local socket 110 * address. A pointer to the allocated address information 111 * struct will be returned, which the caller is required to 112 * release with a call qapi_free_SocketAddress() when no 113 * longer required. 114 * 115 * Returns: the socket address struct, or NULL on error 116 */ 117 SocketAddress *socket_local_address(int fd, Error **errp); 118 119 /** 120 * socket_address_flatten: 121 * @addr: the socket address to flatten 122 * 123 * Convert SocketAddressLegacy to SocketAddress. Caller is responsible 124 * for freeing with qapi_free_SocketAddress(). 125 * 126 * Returns: the argument converted to SocketAddress. 127 */ 128 SocketAddress *socket_address_flatten(SocketAddressLegacy *addr); 129 130 /** 131 * socket_address_parse_named_fd: 132 * 133 * Modify @addr, replacing a named fd by its corresponding number. 134 * Needed for callers that plan to pass @addr to a context where the 135 * current monitor is not available. 136 * 137 * Return 0 on success. 138 */ 139 int socket_address_parse_named_fd(SocketAddress *addr, Error **errp); 140 #endif /* QEMU_SOCKETS_H */ 141