[sync] implement aio_realpath for windows.

Author: kindy

cvs-vers

@@ -1,15 +1,15 @@
 eio.3:1.1
 configure.ac:1.10
-Changes:1.51
+Changes:1.52
 aclocal.m4:1.3
 demo.c:1.4
 ecb.h:1.17
+Makefile.am:1.4
 etp.c:1.1
 libeio.m4:1.22
-Makefile.am:1.4
-xthread.h:1.16
+xthread.h:1.17
 eio.pod:1.34
-LICENSE:1.1
-autogen.sh:1.4
+eio.c:1.130
 eio.h:1.53
-eio.c:1.129
+autogen.sh:1.4
+LICENSE:1.1

src/Changes

@@ -73,4 +73,5 @@ TODO: maybe work around 3.996gb barrier in pread/pwrite as well, maybe readahead
  - remove pread/pwrite emulation, as the only system that lacked them
  (cygwin) provides them for a while now.
  - provide pread/pwrite implementations for win32.
+ - implement aio_realpath for windows.
 

src/eio.c

@@ -970,8 +970,8 @@ eio__lseek (eio_req *req)
 static int
 eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
 {
- const char *rel = path;
  char *res;
+ const char *rel = path;
  char *tmp1, *tmp2;
 #if SYMLOOP_MAX > 32
  int symlinks = SYMLOOP_MAX;
@@ -988,6 +988,23 @@ eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
  return -1;
 
  res = tmpbuf_get (tmpbuf, PATH_MAX * 3);
+#ifdef _WIN32
+ if (_access (rel, 4) != 0)
+ return -1;
+
+ symlinks = GetFullPathName (rel, PATH_MAX * 3, res, 0);
+
+ errno = ENAMETOOLONG;
+ if (symlinks >= PATH_MAX * 3)
+ return -1;
+
+ errno = EIO;
+ if (symlinks <= 0)
+ return -1;
+
+ return symlinks;
+
+#else
  tmp1 = res + PATH_MAX;
  tmp2 = tmp1 + PATH_MAX;
 
@@ -1120,6 +1137,7 @@ eio__realpath (struct tmpbuf *tmpbuf, eio_wd wd, const char *path)
  *res++ = '/';
 
  return res - (char *)tmpbuf->ptr;
+#endif
 }
 
 static signed char

src/xthread.h

@@ -17,15 +17,21 @@
 
 #ifdef _WIN32
 
-#define NTDDI_VERSION NTDDI_WIN2K // needed to get win2000 api calls
-#define _WIN32_WINNT 0x400
+//#define NTDDI_VERSION NTDDI_WIN2K // needed to get win2000 api calls, fails with mingw
+#define _WIN32_WINNT 0x400 // maybe working alternative for mingw
 #include <stdio.h>//D
 #include <fcntl.h>
 #include <io.h>
 #include <time.h>
 #include <winsock2.h>
 #include <process.h>
 #include <windows.h>
+
+/* work around some bugs in ptw32 */
+#if defined(__MINGW32__) && defined(_TIMESPEC_DEFINED)
+#define HAVE_STRUCT_TIMESPEC 1
+#endif
+
 #include <pthread.h>
 #define sigset_t int
 #define sigfillset(a)