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 #ifndef POLLIN
  45 struct pollfd {
  46         int fd;           /* file descriptor */
  47         short events;     /* requested events */
  48         short revents;    /* returned events */
  49 };
  50 #define POLLIN 1
  51 #define POLLHUP 2
  52 #endif
  53
  54 typedef void (__cdecl *sig_handler_t)(int);
  55 struct sigaction {
  56         sig_handler_t sa_handler;
  57         unsigned sa_flags;
  58 };
  59 #define sigemptyset(x) (void)0
  60 #define SA_RESTART 0
  61
  62 struct itimerval {
  63         struct timeval it_value, it_interval;
  64 };
  65 #define ITIMER_REAL 0
  66
  67 /*
  68  * trivial stubs
  69  */
  70
  71 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  72 { errno = ENOSYS; return -1; }
  73 static inline int symlink(const char *oldpath, const char *newpath)
  74 { errno = ENOSYS; return -1; }
  75 static inline int fchmod(int fildes, mode_t mode)
  76 { errno = ENOSYS; return -1; }
  77 static inline int fork(void)
  78 { errno = ENOSYS; return -1; }
  79 static inline unsigned int alarm(unsigned int seconds)
  80 { return 0; }
  81 static inline int fsync(int fd)
  82 { return 0; }
  83 static inline int getppid(void)
  84 { return 1; }
  85 static inline void sync(void)
  86 {}
  87 static inline int getuid()
  88 { return 1; }
  89 static inline struct passwd *getpwnam(const char *name)
  90 { return NULL; }
  91 static inline int fcntl(int fd, int cmd, long arg)
  92 {
  93         if (cmd == F_GETFD || cmd == F_SETFD)
  94                 return 0;
  95         errno = EINVAL;
  96         return -1;
  97 }
  98 /* bash cannot reliably detect negative return codes as failure */
  99 #define exit(code) exit((code) & 0xff)
 100
 101 /*
 102  * simple adaptors
 103  */
 104
 105 static inline int mingw_mkdir(const char *path, int mode)
 106 {
 107         return mkdir(path);
 108 }
 109 #define mkdir mingw_mkdir
 110
 111 static inline int mingw_unlink(const char *pathname)
 112 {
 113         /* read-only files cannot be removed */
 114         chmod(pathname, 0666);
 115         return unlink(pathname);
 116 }
 117 #define unlink mingw_unlink
 118
 119 static inline int waitpid(pid_t pid, int *status, unsigned options)
 120 {
 121         if (options == 0)
 122                 return _cwait(status, pid, 0);
 123         errno = EINVAL;
 124         return -1;
 125 }
 126
 127 /*
 128  * implementations of missing functions
 129  */
 130
 131 int pipe(int filedes[2]);
 132 unsigned int sleep (unsigned int seconds);
 133 int mkstemp(char *template);
 134 int gettimeofday(struct timeval *tv, void *tz);
 135 int poll(struct pollfd *ufds, unsigned int nfds, int timeout);
 136 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 137 struct tm *localtime_r(const time_t *timep, struct tm *result);
 138 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 139 struct passwd *getpwuid(int uid);
 140 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 141 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 142 int link(const char *oldpath, const char *newpath);
 143
 144 /*
 145  * replacements of existing functions
 146  */
 147
 148 int mingw_open (const char *filename, int oflags, ...);
 149 #define open mingw_open
 150
 151 char *mingw_getcwd(char *pointer, int len);
 152 #define getcwd mingw_getcwd
 153
 154 char *mingw_getenv(const char *name);
 155 #define getenv mingw_getenv
 156
 157 struct hostent *mingw_gethostbyname(const char *host);
 158 #define gethostbyname mingw_gethostbyname
 159
 160 int mingw_socket(int domain, int type, int protocol);
 161 #define socket mingw_socket
 162
 163 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 164 #define connect mingw_connect
 165
 166 int mingw_rename(const char*, const char*);
 167 #define rename mingw_rename
 168
 169 #ifdef USE_WIN32_MMAP
 170 int mingw_getpagesize(void);
 171 #define getpagesize mingw_getpagesize
 172 #endif
 173
 174 /* Use mingw_lstat() instead of lstat()/stat() and
 175  * mingw_fstat() instead of fstat() on Windows.
 176  */
 177 #define off_t off64_t
 178 #define stat _stati64
 179 #define lseek _lseeki64
 180 int mingw_lstat(const char *file_name, struct stat *buf);
 181 int mingw_fstat(int fd, struct stat *buf);
 182 #define fstat mingw_fstat
 183 #define lstat mingw_lstat
 184 #define _stati64(x,y) mingw_lstat(x,y)
 185
 186 int mingw_utime(const char *file_name, const struct utimbuf *times);
 187 #define utime mingw_utime
 188
 189 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env);
 190 void mingw_execvp(const char *cmd, char *const *argv);
 191 #define execvp mingw_execvp
 192
 193 static inline unsigned int git_ntohl(unsigned int x)
 194 { return (unsigned int)ntohl(x); }
 195 #define ntohl git_ntohl
 196
 197 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 198 #define signal mingw_signal
 199
 200 /*
 201  * ANSI emulation wrappers
 202  */
 203
 204 int winansi_fputs(const char *str, FILE *stream);
 205 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 206 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 207 #define fputs winansi_fputs
 208 #define printf(...) winansi_printf(__VA_ARGS__)
 209 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 210
 211 /*
 212  * git specific compatibility
 213  */
 214
 215 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 216 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 217 #define PATH_SEP ';'
 218 #define PRIuMAX "I64u"
 219
 220 void mingw_open_html(const char *path);
 221 #define open_html mingw_open_html
 222
 223 /*
 224  * helpers
 225  */
 226
 227 char **make_augmented_environ(const char *const *vars);
 228 void free_environ(char **env);
 229
 230 /*
 231  * A replacement of main() that ensures that argv[0] has a path
 232  * and that default fmode and std(in|out|err) are in binary mode
 233  */
 234
 235 #define main(c,v) dummy_decl_mingw_main(); \
 236 static int mingw_main(); \
 237 int main(int argc, const char **argv) \
 238 { \
 239         _fmode = _O_BINARY; \
 240         _setmode(_fileno(stdin), _O_BINARY); \
 241         _setmode(_fileno(stdout), _O_BINARY); \
 242         _setmode(_fileno(stderr), _O_BINARY); \
 243         argv[0] = xstrdup(_pgmptr); \
 244         return mingw_main(argc, argv); \
 245 } \
 246 static int mingw_main(c,v)
 247
 248 #ifndef NO_MINGW_REPLACE_READDIR
 249 /*
 250  * A replacement of readdir, to ensure that it reads the file type at
 251  * the same time. This avoid extra unneeded lstats in git on MinGW
 252  */
 253 #undef DT_UNKNOWN
 254 #undef DT_DIR
 255 #undef DT_REG
 256 #undef DT_LNK
 257 #define DT_UNKNOWN      0
 258 #define DT_DIR          1
 259 #define DT_REG          2
 260 #define DT_LNK          3
 261
 262 struct mingw_dirent
 263 {
 264         long            d_ino;                  /* Always zero. */
 265         union {
 266                 unsigned short  d_reclen;       /* Always zero. */
 267                 unsigned char   d_type;         /* Reimplementation adds this */
 268         };
 269         unsigned short  d_namlen;               /* Length of name in d_name. */
 270         char            d_name[FILENAME_MAX];   /* File name. */
 271 };
 272 #define dirent mingw_dirent
 273 #define readdir(x) mingw_readdir(x)
 274 struct dirent *mingw_readdir(DIR *dir);
 275 #endif // !NO_MINGW_REPLACE_READDIR