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) ((unsigned)(x) < 259)      /* STILL_ACTIVE */
  21 #define WEXITSTATUS(x) ((x) & 0xff)
  22 #define WIFSIGNALED(x) ((unsigned)(x) > 259)
  23
  24 #define SIGHUP 1
  25 #define SIGQUIT 3
  26 #define SIGKILL 9
  27 #define SIGPIPE 13
  28 #define SIGALRM 14
  29 #define SIGCHLD 17
  30
  31 #define F_GETFD 1
  32 #define F_SETFD 2
  33 #define FD_CLOEXEC 0x1
  34
  35 struct passwd {
  36         char *pw_name;
  37         char *pw_gecos;
  38         char *pw_dir;
  39 };
  40
  41 extern char *getpass(const char *prompt);
  42
  43 struct pollfd {
  44         int fd;           /* file descriptor */
  45         short events;     /* requested events */
  46         short revents;    /* returned events */
  47 };
  48 #define POLLIN 1
  49 #define POLLHUP 2
  50
  51 typedef void (__cdecl *sig_handler_t)(int);
  52 struct sigaction {
  53         sig_handler_t sa_handler;
  54         unsigned sa_flags;
  55 };
  56 #define sigemptyset(x) (void)0
  57 #define SA_RESTART 0
  58
  59 struct itimerval {
  60         struct timeval it_value, it_interval;
  61 };
  62 #define ITIMER_REAL 0
  63
  64 /*
  65  * trivial stubs
  66  */
  67
  68 static inline int readlink(const char *path, char *buf, size_t bufsiz)
  69 { errno = ENOSYS; return -1; }
  70 static inline int symlink(const char *oldpath, const char *newpath)
  71 { errno = ENOSYS; return -1; }
  72 static inline int fchmod(int fildes, mode_t mode)
  73 { errno = ENOSYS; return -1; }
  74 static inline int fork(void)
  75 { errno = ENOSYS; return -1; }
  76 static inline unsigned int alarm(unsigned int seconds)
  77 { return 0; }
  78 static inline int fsync(int fd)
  79 { return 0; }
  80 static inline int getppid(void)
  81 { return 1; }
  82 static inline void sync(void)
  83 {}
  84 static inline int getuid()
  85 { return 1; }
  86 static inline struct passwd *getpwnam(const char *name)
  87 { return NULL; }
  88 static inline int fcntl(int fd, int cmd, long arg)
  89 {
  90         if (cmd == F_GETFD || cmd == F_SETFD)
  91                 return 0;
  92         errno = EINVAL;
  93         return -1;
  94 }
  95 /* bash cannot reliably detect negative return codes as failure */
  96 #define exit(code) exit((code) & 0xff)
  97
  98 /*
  99  * simple adaptors
 100  */
 101
 102 static inline int mingw_mkdir(const char *path, int mode)
 103 {
 104         return mkdir(path);
 105 }
 106 #define mkdir mingw_mkdir
 107
 108 static inline int mingw_unlink(const char *pathname)
 109 {
 110         /* read-only files cannot be removed */
 111         chmod(pathname, 0666);
 112         return unlink(pathname);
 113 }
 114 #define unlink mingw_unlink
 115
 116 static inline int waitpid(pid_t pid, int *status, unsigned options)
 117 {
 118         if (options == 0)
 119                 return _cwait(status, pid, 0);
 120         errno = EINVAL;
 121         return -1;
 122 }
 123
 124 /*
 125  * implementations of missing functions
 126  */
 127
 128 int pipe(int filedes[2]);
 129 unsigned int sleep (unsigned int seconds);
 130 int mkstemp(char *template);
 131 int gettimeofday(struct timeval *tv, void *tz);
 132 int poll(struct pollfd *ufds, unsigned int nfds, int timeout);
 133 struct tm *gmtime_r(const time_t *timep, struct tm *result);
 134 struct tm *localtime_r(const time_t *timep, struct tm *result);
 135 int getpagesize(void);  /* defined in MinGW's libgcc.a */
 136 struct passwd *getpwuid(int uid);
 137 int setitimer(int type, struct itimerval *in, struct itimerval *out);
 138 int sigaction(int sig, struct sigaction *in, struct sigaction *out);
 139 int link(const char *oldpath, const char *newpath);
 140
 141 /*
 142  * replacements of existing functions
 143  */
 144
 145 int mingw_open (const char *filename, int oflags, ...);
 146 #define open mingw_open
 147
 148 char *mingw_getcwd(char *pointer, int len);
 149 #define getcwd mingw_getcwd
 150
 151 char *mingw_getenv(const char *name);
 152 #define getenv mingw_getenv
 153
 154 struct hostent *mingw_gethostbyname(const char *host);
 155 #define gethostbyname mingw_gethostbyname
 156
 157 int mingw_socket(int domain, int type, int protocol);
 158 #define socket mingw_socket
 159
 160 int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
 161 #define connect mingw_connect
 162
 163 int mingw_rename(const char*, const char*);
 164 #define rename mingw_rename
 165
 166 #ifdef USE_WIN32_MMAP
 167 int mingw_getpagesize(void);
 168 #define getpagesize mingw_getpagesize
 169 #endif
 170
 171 /* Use mingw_lstat() instead of lstat()/stat() and
 172  * mingw_fstat() instead of fstat() on Windows.
 173  */
 174 #define off_t off64_t
 175 #define stat _stati64
 176 #define lseek _lseeki64
 177 int mingw_lstat(const char *file_name, struct stat *buf);
 178 int mingw_fstat(int fd, struct stat *buf);
 179 #define fstat mingw_fstat
 180 #define lstat mingw_lstat
 181 #define _stati64(x,y) mingw_lstat(x,y)
 182
 183 int mingw_utime(const char *file_name, const struct utimbuf *times);
 184 #define utime mingw_utime
 185
 186 pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env);
 187 void mingw_execvp(const char *cmd, char *const *argv);
 188 #define execvp mingw_execvp
 189
 190 static inline unsigned int git_ntohl(unsigned int x)
 191 { return (unsigned int)ntohl(x); }
 192 #define ntohl git_ntohl
 193
 194 sig_handler_t mingw_signal(int sig, sig_handler_t handler);
 195 #define signal mingw_signal
 196
 197 /*
 198  * ANSI emulation wrappers
 199  */
 200
 201 int winansi_fputs(const char *str, FILE *stream);
 202 int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
 203 int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
 204 #define fputs winansi_fputs
 205 #define printf(...) winansi_printf(__VA_ARGS__)
 206 #define fprintf(...) winansi_fprintf(__VA_ARGS__)
 207
 208 /*
 209  * git specific compatibility
 210  */
 211
 212 #define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
 213 #define is_dir_sep(c) ((c) == '/' || (c) == '\\')
 214 #define PATH_SEP ';'
 215 #define PRIuMAX "I64u"
 216
 217 void mingw_open_html(const char *path);
 218 #define open_html mingw_open_html
 219
 220 /*
 221  * helpers
 222  */
 223
 224 char **copy_environ(void);
 225 void free_environ(char **env);
 226 char **env_setenv(char **env, const char *name);
 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