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