c619644067
Historically QEMU has had a socket_error() macro that was defined to map to WSASocketError(). The os-win32.h header file would define errno constants that mapped to the WSA error constants. This worked fine with Mingw32 since its header files never defined any errno values, nor did it even provide an errno.h. So callers of socket_error() could match on traditional Exxxx constants and it would all "just work". With Mingw64 though, things work rather differently. First there is an errno.h file which defines all the traditional errno constants you'd expect from a UNIX platform. There is then a winerror.h which defined the WSA error constants. Crucially the WSAExxxx errno values in winerror.h do not match the Exxxx errno values in error.h. If QEMU had only imported winerror.h it would still work, but the qemu/osdep.h file unconditionally imports errno.h. So callers of socket_error() will get now WSAExxxx values back and compare them to the Exxx constants. This will always fail silently at runtime. To solve this QEMU needs to stop assuming the WSAExxxx constant values match the Exxx constant values. Thus the socket_error() macro is turned into a small function that re-maps WSAExxxx values into Exxx. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/* headers to use the BSD sockets */
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#ifndef QEMU_SOCKET_H
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#define QEMU_SOCKET_H
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#ifdef _WIN32
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#include <windows.h>
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#include <winsock2.h>
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#include <ws2tcpip.h>
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int inet_aton(const char *cp, struct in_addr *ia);
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#else
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <sys/un.h>
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#define closesocket(s) close(s)
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#endif /* !_WIN32 */
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#include "qapi-types.h"
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/* misc helpers */
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int qemu_socket(int domain, int type, int protocol);
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int qemu_accept(int s, struct sockaddr *addr, socklen_t *addrlen);
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int socket_set_cork(int fd, int v);
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int socket_set_nodelay(int fd);
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void qemu_set_block(int fd);
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void qemu_set_nonblock(int fd);
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int socket_set_fast_reuse(int fd);
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#ifdef WIN32
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/* Windows has different names for the same constants with the same values */
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#define SHUT_RD 0
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#define SHUT_WR 1
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#define SHUT_RDWR 2
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#endif
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/* callback function for nonblocking connect
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* valid fd on success, negative error code on failure
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*/
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typedef void NonBlockingConnectHandler(int fd, Error *err, void *opaque);
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InetSocketAddress *inet_parse(const char *str, Error **errp);
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int inet_listen(const char *str, char *ostr, int olen,
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int socktype, int port_offset, Error **errp);
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int inet_connect(const char *str, Error **errp);
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int inet_nonblocking_connect(const char *str,
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NonBlockingConnectHandler *callback,
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void *opaque, Error **errp);
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NetworkAddressFamily inet_netfamily(int family);
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int unix_listen(const char *path, char *ostr, int olen, Error **errp);
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int unix_connect(const char *path, Error **errp);
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int unix_nonblocking_connect(const char *str,
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NonBlockingConnectHandler *callback,
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void *opaque, Error **errp);
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SocketAddress *socket_parse(const char *str, Error **errp);
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int socket_connect(SocketAddress *addr, Error **errp,
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NonBlockingConnectHandler *callback, void *opaque);
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int socket_listen(SocketAddress *addr, Error **errp);
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int socket_dgram(SocketAddress *remote, SocketAddress *local, Error **errp);
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/* Old, ipv4 only bits. Don't use for new code. */
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int parse_host_port(struct sockaddr_in *saddr, const char *str);
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int socket_init(void);
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/**
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* socket_sockaddr_to_address:
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* @sa: socket address struct
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* @salen: size of @sa struct
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* @errp: pointer to uninitialized error object
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*
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* Get the string representation of the socket
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* address. A pointer to the allocated address information
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* struct will be returned, which the caller is required to
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* release with a call qapi_free_SocketAddress when no
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* longer required.
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*
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* Returns: the socket address struct, or NULL on error
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*/
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SocketAddress *
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socket_sockaddr_to_address(struct sockaddr_storage *sa,
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socklen_t salen,
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Error **errp);
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/**
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* socket_local_address:
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* @fd: the socket file handle
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* @errp: pointer to uninitialized error object
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*
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* Get the string representation of the local socket
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* address. A pointer to the allocated address information
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* struct will be returned, which the caller is required to
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* release with a call qapi_free_SocketAddress when no
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* longer required.
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*
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* Returns: the socket address struct, or NULL on error
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*/
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SocketAddress *socket_local_address(int fd, Error **errp);
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/**
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* socket_remote_address:
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* @fd: the socket file handle
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* @errp: pointer to uninitialized error object
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*
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* Get the string representation of the remote socket
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* address. A pointer to the allocated address information
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* struct will be returned, which the caller is required to
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* release with a call qapi_free_SocketAddress when no
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* longer required.
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*
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* Returns: the socket address struct, or NULL on error
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*/
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SocketAddress *socket_remote_address(int fd, Error **errp);
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void qapi_copy_SocketAddress(SocketAddress **p_dest,
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SocketAddress *src);
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#endif /* QEMU_SOCKET_H */
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