1 files changed, 366 insertions, 0 deletions
diff --git a/compat/mingw.h b/compat/mingw.h
new file mode 100644
index 0000000..bd0a88b
--- /dev/null
+++ b/compat/mingw.h
@@ -0,0 +1,366 @@
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+/*
+ * things that are not available in header files
+ */
+
+typedef int pid_t;
+typedef int uid_t;
+typedef int socklen_t;
+#define hstrerror strerror
+
+#define S_IFLNK    0120000 /* Symbolic link */
+#define S_ISLNK(x) (((x) & S_IFMT) == S_IFLNK)
+#define S_ISSOCK(x) 0
+
+#define S_IRGRP 0
+#define S_IWGRP 0
+#define S_IXGRP 0
+#define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
+#define S_IROTH 0
+#define S_IWOTH 0
+#define S_IXOTH 0
+#define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
+
+#define S_ISUID 0004000
+#define S_ISGID 0002000
+#define S_ISVTX 0001000
+
+#define WIFEXITED(x) 1
+#define WIFSIGNALED(x) 0
+#define WEXITSTATUS(x) ((x) & 0xff)
+#define WTERMSIG(x) SIGTERM
+
+#define EWOULDBLOCK EAGAIN
+#define SHUT_WR SD_SEND
+
+#define SIGHUP 1
+#define SIGQUIT 3
+#define SIGKILL 9
+#define SIGPIPE 13
+#define SIGALRM 14
+#define SIGCHLD 17
+
+#define F_GETFD 1
+#define F_SETFD 2
+#define FD_CLOEXEC 0x1
+
+#define EAFNOSUPPORT WSAEAFNOSUPPORT
+#define ECONNABORTED WSAECONNABORTED
+
+struct passwd {
+	char *pw_name;
+	char *pw_gecos;
+	char *pw_dir;
+};
+
+typedef void (__cdecl *sig_handler_t)(int);
+struct sigaction {
+	sig_handler_t sa_handler;
+	unsigned sa_flags;
+};
+#define sigemptyset(x) (void)0
+#define SA_RESTART 0
+
+struct itimerval {
+	struct timeval it_value, it_interval;
+};
+#define ITIMER_REAL 0
+
+/*
+ * sanitize preprocessor namespace polluted by Windows headers defining
+ * macros which collide with git local versions
+ */
+#undef HELP_COMMAND /* from winuser.h */
+
+/*
+ * trivial stubs
+ */
+
+static inline int readlink(const char *path, char *buf, size_t bufsiz)
+{ errno = ENOSYS; return -1; }
+static inline int symlink(const char *oldpath, const char *newpath)
+{ errno = ENOSYS; return -1; }
+static inline int fchmod(int fildes, mode_t mode)
+{ errno = ENOSYS; return -1; }
+static inline pid_t fork(void)
+{ errno = ENOSYS; return -1; }
+static inline unsigned int alarm(unsigned int seconds)
+{ return 0; }
+static inline int fsync(int fd)
+{ return _commit(fd); }
+static inline pid_t getppid(void)
+{ return 1; }
+static inline void sync(void)
+{}
+static inline uid_t getuid(void)
+{ return 1; }
+static inline struct passwd *getpwnam(const char *name)
+{ return NULL; }
+static inline int fcntl(int fd, int cmd, ...)
+{
+	if (cmd == F_GETFD || cmd == F_SETFD)
+		return 0;
+	errno = EINVAL;
+	return -1;
+}
+/* bash cannot reliably detect negative return codes as failure */
+#define exit(code) exit((code) & 0xff)
+
+/*
+ * simple adaptors
+ */
+
+static inline int mingw_mkdir(const char *path, int mode)
+{
+	return mkdir(path);
+}
+#define mkdir mingw_mkdir
+
+#define WNOHANG 1
+pid_t waitpid(pid_t pid, int *status, int options);
+
+#define kill mingw_kill
+int mingw_kill(pid_t pid, int sig);
+
+#ifndef NO_OPENSSL
+#include <openssl/ssl.h>
+static inline int mingw_SSL_set_fd(SSL *ssl, int fd)
+{
+	return SSL_set_fd(ssl, _get_osfhandle(fd));
+}
+#define SSL_set_fd mingw_SSL_set_fd
+
+static inline int mingw_SSL_set_rfd(SSL *ssl, int fd)
+{
+	return SSL_set_rfd(ssl, _get_osfhandle(fd));
+}
+#define SSL_set_rfd mingw_SSL_set_rfd
+
+static inline int mingw_SSL_set_wfd(SSL *ssl, int fd)
+{
+	return SSL_set_wfd(ssl, _get_osfhandle(fd));
+}
+#define SSL_set_wfd mingw_SSL_set_wfd
+#endif
+
+/*
+ * implementations of missing functions
+ */
+
+int pipe(int filedes[2]);
+unsigned int sleep (unsigned int seconds);
+int mkstemp(char *template);
+int gettimeofday(struct timeval *tv, void *tz);
+struct tm *gmtime_r(const time_t *timep, struct tm *result);
+struct tm *localtime_r(const time_t *timep, struct tm *result);
+int getpagesize(void);	/* defined in MinGW's libgcc.a */
+struct passwd *getpwuid(uid_t uid);
+int setitimer(int type, struct itimerval *in, struct itimerval *out);
+int sigaction(int sig, struct sigaction *in, struct sigaction *out);
+int link(const char *oldpath, const char *newpath);
+
+/*
+ * replacements of existing functions
+ */
+
+int mingw_unlink(const char *pathname);
+#define unlink mingw_unlink
+
+int mingw_rmdir(const char *path);
+#define rmdir mingw_rmdir
+
+int mingw_open (const char *filename, int oflags, ...);
+#define open mingw_open
+
+ssize_t mingw_write(int fd, const void *buf, size_t count);
+#define write mingw_write
+
+int mingw_fgetc(FILE *stream);
+#define fgetc mingw_fgetc
+
+FILE *mingw_fopen (const char *filename, const char *otype);
+#define fopen mingw_fopen
+
+FILE *mingw_freopen (const char *filename, const char *otype, FILE *stream);
+#define freopen mingw_freopen
+
+int mingw_fflush(FILE *stream);
+#define fflush mingw_fflush
+
+char *mingw_getcwd(char *pointer, int len);
+#define getcwd mingw_getcwd
+
+char *mingw_getenv(const char *name);
+#define getenv mingw_getenv
+
+int mingw_gethostname(char *host, int namelen);
+#define gethostname mingw_gethostname
+
+struct hostent *mingw_gethostbyname(const char *host);
+#define gethostbyname mingw_gethostbyname
+
+void mingw_freeaddrinfo(struct addrinfo *res);
+#define freeaddrinfo mingw_freeaddrinfo
+
+int mingw_getaddrinfo(const char *node, const char *service,
+		      const struct addrinfo *hints, struct addrinfo **res);
+#define getaddrinfo mingw_getaddrinfo
+
+int mingw_getnameinfo(const struct sockaddr *sa, socklen_t salen,
+		      char *host, DWORD hostlen, char *serv, DWORD servlen,
+		      int flags);
+#define getnameinfo mingw_getnameinfo
+
+int mingw_socket(int domain, int type, int protocol);
+#define socket mingw_socket
+
+int mingw_connect(int sockfd, struct sockaddr *sa, size_t sz);
+#define connect mingw_connect
+
+int mingw_bind(int sockfd, struct sockaddr *sa, size_t sz);
+#define bind mingw_bind
+
+int mingw_setsockopt(int sockfd, int lvl, int optname, void *optval, int optlen);
+#define setsockopt mingw_setsockopt
+
+int mingw_shutdown(int sockfd, int how);
+#define shutdown mingw_shutdown
+
+int mingw_listen(int sockfd, int backlog);
+#define listen mingw_listen
+
+int mingw_accept(int sockfd, struct sockaddr *sa, socklen_t *sz);
+#define accept mingw_accept
+
+int mingw_rename(const char*, const char*);
+#define rename mingw_rename
+
+#if defined(USE_WIN32_MMAP) || defined(_MSC_VER)
+int mingw_getpagesize(void);
+#define getpagesize mingw_getpagesize
+#endif
+
+struct rlimit {
+	unsigned int rlim_cur;
+};
+#define RLIMIT_NOFILE 0
+
+static inline int getrlimit(int resource, struct rlimit *rlp)
+{
+	if (resource != RLIMIT_NOFILE) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	rlp->rlim_cur = 2048;
+	return 0;
+}
+
+/* Use mingw_lstat() instead of lstat()/stat() and
+ * mingw_fstat() instead of fstat() on Windows.
+ */
+#define off_t off64_t
+#define lseek _lseeki64
+#ifndef ALREADY_DECLARED_STAT_FUNCS
+#define stat _stati64
+int mingw_lstat(const char *file_name, struct stat *buf);
+int mingw_stat(const char *file_name, struct stat *buf);
+int mingw_fstat(int fd, struct stat *buf);
+#define fstat mingw_fstat
+#define lstat mingw_lstat
+#define _stati64(x,y) mingw_stat(x,y)
+#endif
+
+int mingw_utime(const char *file_name, const struct utimbuf *times);
+#define utime mingw_utime
+
+pid_t mingw_spawnvpe(const char *cmd, const char **argv, char **env,
+		     const char *dir,
+		     int fhin, int fhout, int fherr);
+int mingw_execvp(const char *cmd, char *const *argv);
+#define execvp mingw_execvp
+int mingw_execv(const char *cmd, char *const *argv);
+#define execv mingw_execv
+
+static inline unsigned int git_ntohl(unsigned int x)
+{ return (unsigned int)ntohl(x); }
+#define ntohl git_ntohl
+
+sig_handler_t mingw_signal(int sig, sig_handler_t handler);
+#define signal mingw_signal
+
+int mingw_raise(int sig);
+#define raise mingw_raise
+
+/*
+ * ANSI emulation wrappers
+ */
+
+int winansi_fputs(const char *str, FILE *stream);
+int winansi_printf(const char *format, ...) __attribute__((format (printf, 1, 2)));
+int winansi_fprintf(FILE *stream, const char *format, ...) __attribute__((format (printf, 2, 3)));
+#define fputs winansi_fputs
+#define printf(...) winansi_printf(__VA_ARGS__)
+#define fprintf(...) winansi_fprintf(__VA_ARGS__)
+
+/*
+ * git specific compatibility
+ */
+
+#define has_dos_drive_prefix(path) (isalpha(*(path)) && (path)[1] == ':')
+#define is_dir_sep(c) ((c) == '/' || (c) == '\\')
+static inline char *mingw_find_last_dir_sep(const char *path)
+{
+	char *ret = NULL;
+	for (; *path; ++path)
+		if (is_dir_sep(*path))
+			ret = (char *)path;
+	return ret;
+}
+#define find_last_dir_sep mingw_find_last_dir_sep
+#define PATH_SEP ';'
+#define PRIuMAX "I64u"
+
+void mingw_open_html(const char *path);
+#define open_html mingw_open_html
+
+/*
+ * helpers
+ */
+
+char **make_augmented_environ(const char *const *vars);
+void free_environ(char **env);
+
+/*
+ * A critical section used in the implementation of the spawn
+ * functions (mingw_spawnv[p]e()) and waitpid(). Intialised in
+ * the replacement main() macro below.
+ */
+extern CRITICAL_SECTION pinfo_cs;
+
+/*
+ * A replacement of main() that ensures that argv[0] has a path
+ * and that default fmode and std(in|out|err) are in binary mode
+ */
+
+#define main(c,v) dummy_decl_mingw_main(); \
+static int mingw_main(c,v); \
+int main(int argc, char **argv) \
+{ \
+	extern CRITICAL_SECTION pinfo_cs; \
+	_fmode = _O_BINARY; \
+	_setmode(_fileno(stdin), _O_BINARY); \
+	_setmode(_fileno(stdout), _O_BINARY); \
+	_setmode(_fileno(stderr), _O_BINARY); \
+	argv[0] = xstrdup(_pgmptr); \
+	InitializeCriticalSection(&pinfo_cs); \
+	return mingw_main(argc, argv); \
+} \
+static int mingw_main(c,v)
+
+/*
+ * Used by Pthread API implementation for Windows
+ */
+extern int err_win_to_posix(DWORD winerr);