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