Windows: avoid the "dup dance" when spawning a child process
[git/git.git] / compat / mingw.h
CommitLineData
f4626df5 1#include <winsock2.h>
fe3b2b7b 2#include <ws2tcpip.h>
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3
4/*
5 * things that are not available in header files
6 */
7
8typedef int pid_t;
9#define hstrerror strerror
10
11#define S_IFLNK 0120000 /* Symbolic link */
12#define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
13#define S_ISSOCK(x) 0
14#define S_IRGRP 0
15#define S_IWGRP 0
16#define S_IXGRP 0
17#define S_ISGID 0
18#define S_IROTH 0
19#define S_IXOTH 0
20
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21#define WIFEXITED(x) 1
22#define WIFSIGNALED(x) 0
f4626df5 23#define WEXITSTATUS(x) ((x) & 0xff)
303e7c48 24#define WTERMSIG(x) SIGTERM
f4626df5 25
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26#define SIGHUP 1
27#define SIGQUIT 3
28#define SIGKILL 9
29#define SIGPIPE 13
30#define SIGALRM 14
31#define SIGCHLD 17
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32
33#define F_GETFD 1
34#define F_SETFD 2
35#define FD_CLOEXEC 0x1
36
37struct passwd {
38 char *pw_name;
39 char *pw_gecos;
40 char *pw_dir;
41};
42
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43extern char *getpass(const char *prompt);
44
435bdf8c 45#ifndef POLLIN
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46struct pollfd {
47 int fd; /* file descriptor */
48 short events; /* requested events */
49 short revents; /* returned events */
50};
51#define POLLIN 1
52#define POLLHUP 2
435bdf8c 53#endif
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54
55typedef void (__cdecl *sig_handler_t)(int);
56struct sigaction {
57 sig_handler_t sa_handler;
58 unsigned sa_flags;
59};
60#define sigemptyset(x) (void)0
61#define SA_RESTART 0
62
63struct itimerval {
64 struct timeval it_value, it_interval;
65};
66#define ITIMER_REAL 0
67
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68/*
69 * trivial stubs
70 */
71
72static inline int readlink(const char *path, char *buf, size_t bufsiz)
73{ errno = ENOSYS; return -1; }
74static inline int symlink(const char *oldpath, const char *newpath)
75{ errno = ENOSYS; return -1; }
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76static inline int fchmod(int fildes, mode_t mode)
77{ errno = ENOSYS; return -1; }
78static inline int fork(void)
79{ errno = ENOSYS; return -1; }
80static inline unsigned int alarm(unsigned int seconds)
81{ return 0; }
82static inline int fsync(int fd)
83{ return 0; }
84static inline int getppid(void)
85{ return 1; }
86static inline void sync(void)
87{}
88static inline int getuid()
89{ return 1; }
90static inline struct passwd *getpwnam(const char *name)
91{ return NULL; }
92static inline int fcntl(int fd, int cmd, long arg)
93{
94 if (cmd == F_GETFD || cmd == F_SETFD)
95 return 0;
96 errno = EINVAL;
97 return -1;
98}
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99/* bash cannot reliably detect negative return codes as failure */
100#define exit(code) exit((code) & 0xff)
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101
102/*
103 * simple adaptors
104 */
105
106static inline int mingw_mkdir(const char *path, int mode)
107{
108 return mkdir(path);
109}
110#define mkdir mingw_mkdir
111
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112static inline int mingw_unlink(const char *pathname)
113{
114 /* read-only files cannot be removed */
115 chmod(pathname, 0666);
116 return unlink(pathname);
117}
118#define unlink mingw_unlink
119
27e3219f 120static inline int waitpid(pid_t pid, int *status, unsigned options)
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121{
122 if (options == 0)
123 return _cwait(status, pid, 0);
124 errno = EINVAL;
125 return -1;
126}
127
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128#ifndef NO_OPENSSL
129#include <openssl/ssl.h>
130static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
131{
132 return SSL_set_fd(ssl, _get_osfhandle(fd));
133}
134#define SSL_set_fd mingw_SSL_set_fd
135
136static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
137{
138 return SSL_set_rfd(ssl, _get_osfhandle(fd));
139}
140#define SSL_set_rfd mingw_SSL_set_rfd
141
142static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
143{
144 return SSL_set_wfd(ssl, _get_osfhandle(fd));
145}
146#define SSL_set_wfd mingw_SSL_set_wfd
147#endif
148
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149/*
150 * implementations of missing functions
151 */
152
897bb8cb 153int pipe(int filedes[2]);
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154unsigned int sleep (unsigned int seconds);
155int mkstemp(char *template);
156int gettimeofday(struct timeval *tv, void *tz);
157int poll(struct pollfd *ufds, unsigned int nfds, int timeout);
158struct tm *gmtime_r(const time_t *timep, struct tm *result);
159struct tm *localtime_r(const time_t *timep, struct tm *result);
160int getpagesize(void); /* defined in MinGW's libgcc.a */
161struct passwd *getpwuid(int uid);
162int setitimer(int type, struct itimerval *in, struct itimerval *out);
163int sigaction(int sig, struct sigaction *in, struct sigaction *out);
7be401e0 164int link(const char *oldpath, const char *newpath);
80ba074f 165
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166/*
167 * replacements of existing functions
168 */
169
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170int mingw_open (const char *filename, int oflags, ...);
171#define open mingw_open
172
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173char *mingw_getcwd(char *pointer, int len);
174#define getcwd mingw_getcwd
175
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176char *mingw_getenv(const char *name);
177#define getenv mingw_getenv
178
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179struct hostent *mingw_gethostbyname(const char *host);
180#define gethostbyname mingw_gethostbyname
181
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182void mingw_freeaddrinfo(struct addrinfo *res);
183#define freeaddrinfo mingw_freeaddrinfo
184
185int mingw_getaddrinfo(const char *node, const char *service,
186 const struct addrinfo *hints, struct addrinfo **res);
187#define getaddrinfo mingw_getaddrinfo
188
189int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
190 char *host, DWORD hostlen, char *serv, DWORD servlen,
191 int flags);
192#define getnameinfo mingw_getnameinfo
193
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194int mingw_socket(int domain, int type, int protocol);
195#define socket mingw_socket
196
197int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
198#define connect mingw_connect
199
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200int mingw_rename(const char*, const char*);
201#define rename mingw_rename
202
b1b95204 203#if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
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204int mingw_getpagesize(void);
205#define getpagesize mingw_getpagesize
206#endif
207
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208/* Use mingw_lstat() instead of lstat()/stat() and
209 * mingw_fstat() instead of fstat() on Windows.
210 */
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211#define off_t off64_t
212#define stat _stati64
213#define lseek _lseeki64
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214int mingw_lstat(const char *file_name, struct stat *buf);
215int mingw_fstat(int fd, struct stat *buf);
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216#define fstat mingw_fstat
217#define lstat mingw_lstat
d5e31235 218#define _stati64(x,y) mingw_lstat(x,y)
5411bdc4 219
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220int mingw_utime(const char *file_name, const struct utimbuf *times);
221#define utime mingw_utime
222
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223pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
224 int fhin, int fhout, int fherr);
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225void mingw_execvp(const char *cmd, char *const *argv);
226#define execvp mingw_execvp
227
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228static inline unsigned int git_ntohl(unsigned int x)
229{ return (unsigned int)ntohl(x); }
230#define ntohl git_ntohl
231
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232sig_handler_t mingw_signal(int sig, sig_handler_t handler);
233#define signal mingw_signal
234
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235/*
236 * ANSI emulation wrappers
237 */
238
239int winansi_fputs(const char *str, FILE *stream);
240int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
241int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
242#define fputs winansi_fputs
243#define printf(...) winansi_printf(__VA_ARGS__)
244#define fprintf(...) winansi_fprintf(__VA_ARGS__)
245
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246/*
247 * git specific compatibility
248 */
249
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250#define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
251#define is_dir_sep(c) ((c) == '/' || (c) == '\\')
80ba074f 252#define PATH_SEP ';'
82f8d969 253#define PRIuMAX "I64u"
ba26f296 254
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255void mingw_open_html(const char *path);
256#define open_html mingw_open_html
257
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258/*
259 * helpers
260 */
261
2affea41 262char **make_augmented_environ(const char *const *vars);
ba26f296 263void free_environ(char **env);
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264
265/*
266 * A replacement of main() that ensures that argv[0] has a path
a6ca8c62 267 * and that default fmode and std(in|out|err) are in binary mode
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268 */
269
22537765
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270#define main(c,v) dummy_decl_mingw_main(); \
271static int mingw_main(); \
272int main(int argc, const char **argv) \
35eeef47 273{ \
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274 _fmode = _O_BINARY; \
275 _setmode(_fileno(stdin), _O_BINARY); \
276 _setmode(_fileno(stdout), _O_BINARY); \
277 _setmode(_fileno(stderr), _O_BINARY); \
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278 argv[0] = xstrdup(_pgmptr); \
279 return mingw_main(argc, argv); \
280} \
281static int mingw_main(c,v)
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282
283#ifndef NO_MINGW_REPLACE_READDIR
284/*
285 * A replacement of readdir, to ensure that it reads the file type at
286 * the same time. This avoid extra unneeded lstats in git on MinGW
287 */
288#undef DT_UNKNOWN
289#undef DT_DIR
290#undef DT_REG
291#undef DT_LNK
292#define DT_UNKNOWN 0
293#define DT_DIR 1
294#define DT_REG 2
295#define DT_LNK 3
296
297struct mingw_dirent
298{
299 long d_ino; /* Always zero. */
300 union {
301 unsigned short d_reclen; /* Always zero. */
302 unsigned char d_type; /* Reimplementation adds this */
303 };
304 unsigned short d_namlen; /* Length of name in d_name. */
305 char d_name[FILENAME_MAX]; /* File name. */
306};
307#define dirent mingw_dirent
308#define readdir(x) mingw_readdir(x)
309struct dirent *mingw_readdir(DIR *dir);
310#endif // !NO_MINGW_REPLACE_READDIR