xref: /openbmc/qemu/include/sysemu/os-win32.h (revision 99d423e5)
1 /*
2  * win32 specific declarations
3  *
4  * Copyright (c) 2003-2008 Fabrice Bellard
5  * Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com>
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23  * THE SOFTWARE.
24  */
25 
26 #ifndef QEMU_OS_WIN32_H
27 #define QEMU_OS_WIN32_H
28 
29 #include <winsock2.h>
30 #include <windows.h>
31 #include <ws2tcpip.h>
32 
33 #if defined(_WIN64)
34 /* On w64, setjmp is implemented by _setjmp which needs a second parameter.
35  * If this parameter is NULL, longjump does no stack unwinding.
36  * That is what we need for QEMU. Passing the value of register rsp (default)
37  * lets longjmp try a stack unwinding which will crash with generated code. */
38 # undef setjmp
39 # define setjmp(env) _setjmp(env, NULL)
40 #endif
41 /* QEMU uses sigsetjmp()/siglongjmp() as the portable way to specify
42  * "longjmp and don't touch the signal masks". Since we know that the
43  * savemask parameter will always be zero we can safely define these
44  * in terms of setjmp/longjmp on Win32.
45  */
46 #define sigjmp_buf jmp_buf
47 #define sigsetjmp(env, savemask) setjmp(env)
48 #define siglongjmp(env, val) longjmp(env, val)
49 
50 /* Missing POSIX functions. Don't use MinGW-w64 macros. */
51 #ifndef CONFIG_LOCALTIME_R
52 #undef gmtime_r
53 struct tm *gmtime_r(const time_t *timep, struct tm *result);
54 #undef localtime_r
55 struct tm *localtime_r(const time_t *timep, struct tm *result);
56 #endif /* CONFIG_LOCALTIME_R */
57 
58 static inline void os_setup_signal_handling(void) {}
59 static inline void os_daemonize(void) {}
60 static inline void os_setup_post(void) {}
61 void os_set_line_buffering(void);
62 static inline void os_set_proc_name(const char *dummy) {}
63 
64 int getpagesize(void);
65 
66 #if !defined(EPROTONOSUPPORT)
67 # define EPROTONOSUPPORT EINVAL
68 #endif
69 
70 int setenv(const char *name, const char *value, int overwrite);
71 
72 typedef struct {
73     long tv_sec;
74     long tv_usec;
75 } qemu_timeval;
76 int qemu_gettimeofday(qemu_timeval *tp);
77 
78 static inline bool is_daemonized(void)
79 {
80     return false;
81 }
82 
83 static inline int os_mlock(void)
84 {
85     return -ENOSYS;
86 }
87 
88 #define fsync _commit
89 
90 #if !defined(lseek)
91 # define lseek _lseeki64
92 #endif
93 
94 int qemu_ftruncate64(int, int64_t);
95 
96 #if !defined(ftruncate)
97 # define ftruncate qemu_ftruncate64
98 #endif
99 
100 static inline char *realpath(const char *path, char *resolved_path)
101 {
102     _fullpath(resolved_path, path, _MAX_PATH);
103     return resolved_path;
104 }
105 
106 /* ??? Mingw appears to export _lock_file and _unlock_file as the functions
107  * with which to lock a stdio handle.  But something is wrong in the markup,
108  * either in the header or the library, such that we get undefined references
109  * to "_imp___lock_file" etc when linking.  Since we seem to have no other
110  * alternative, and the usage within the logging functions isn't critical,
111  * ignore FILE locking.
112  */
113 
114 static inline void qemu_flockfile(FILE *f)
115 {
116 }
117 
118 static inline void qemu_funlockfile(FILE *f)
119 {
120 }
121 
122 /* We wrap all the sockets functions so that we can
123  * set errno based on WSAGetLastError()
124  */
125 
126 #undef connect
127 #define connect qemu_connect_wrap
128 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr,
129                       socklen_t addrlen);
130 
131 #undef listen
132 #define listen qemu_listen_wrap
133 int qemu_listen_wrap(int sockfd, int backlog);
134 
135 #undef bind
136 #define bind qemu_bind_wrap
137 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr,
138                    socklen_t addrlen);
139 
140 #undef socket
141 #define socket qemu_socket_wrap
142 int qemu_socket_wrap(int domain, int type, int protocol);
143 
144 #undef accept
145 #define accept qemu_accept_wrap
146 int qemu_accept_wrap(int sockfd, struct sockaddr *addr,
147                      socklen_t *addrlen);
148 
149 #undef shutdown
150 #define shutdown qemu_shutdown_wrap
151 int qemu_shutdown_wrap(int sockfd, int how);
152 
153 #undef ioctlsocket
154 #define ioctlsocket qemu_ioctlsocket_wrap
155 int qemu_ioctlsocket_wrap(int fd, int req, void *val);
156 
157 #undef closesocket
158 #define closesocket qemu_closesocket_wrap
159 int qemu_closesocket_wrap(int fd);
160 
161 #undef getsockopt
162 #define getsockopt qemu_getsockopt_wrap
163 int qemu_getsockopt_wrap(int sockfd, int level, int optname,
164                          void *optval, socklen_t *optlen);
165 
166 #undef setsockopt
167 #define setsockopt qemu_setsockopt_wrap
168 int qemu_setsockopt_wrap(int sockfd, int level, int optname,
169                          const void *optval, socklen_t optlen);
170 
171 #undef getpeername
172 #define getpeername qemu_getpeername_wrap
173 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr,
174                           socklen_t *addrlen);
175 
176 #undef getsockname
177 #define getsockname qemu_getsockname_wrap
178 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr,
179                           socklen_t *addrlen);
180 
181 #undef send
182 #define send qemu_send_wrap
183 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags);
184 
185 #undef sendto
186 #define sendto qemu_sendto_wrap
187 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags,
188                          const struct sockaddr *addr, socklen_t addrlen);
189 
190 #undef recv
191 #define recv qemu_recv_wrap
192 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags);
193 
194 #undef recvfrom
195 #define recvfrom qemu_recvfrom_wrap
196 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags,
197                            struct sockaddr *addr, socklen_t *addrlen);
198 
199 #endif
200