*
* Directory Runtime Support
*/
+
+#include "ghcconfig.h"
+
+// The following is required on Solaris to force the POSIX versions of
+// the various _r functions instead of the Solaris versions.
+#ifdef solaris2_HOST_OS
+#define _POSIX_PTHREAD_SEMANTICS
+#endif
+
#include "HsBase.h"
-#if defined(mingw32_TARGET_OS)
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__) || defined(_MSC_VER)
#include <windows.h>
+
+static
+int
+toErrno(DWORD rc)
+{
+ switch (rc) {
+ case ERROR_FILE_NOT_FOUND: return ENOENT;
+ case ERROR_PATH_NOT_FOUND: return ENOENT;
+ case ERROR_TOO_MANY_OPEN_FILES: return EMFILE;
+ case ERROR_ACCESS_DENIED: return EACCES;
+ case ERROR_INVALID_HANDLE: return EBADF; /* kinda sorta */
+ case ERROR_NOT_ENOUGH_MEMORY: return ENOMEM;
+ case ERROR_INVALID_ACCESS: return EINVAL;
+ case ERROR_INVALID_DATA: return EINVAL;
+ case ERROR_OUTOFMEMORY: return ENOMEM;
+ case ERROR_SHARING_VIOLATION: return EACCES;
+ case ERROR_LOCK_VIOLATION: return EACCES;
+ case ERROR_ALREADY_EXISTS: return EEXIST;
+ case ERROR_BUSY: return EBUSY;
+ case ERROR_BROKEN_PIPE: return EPIPE;
+ case ERROR_PIPE_CONNECTED: return EBUSY;
+ case ERROR_PIPE_LISTENING: return EBUSY;
+ case ERROR_NOT_CONNECTED: return EINVAL;
+
+ case ERROR_NOT_OWNER: return EPERM;
+ case ERROR_DIRECTORY: return ENOTDIR;
+ case ERROR_FILE_INVALID: return EACCES;
+ case ERROR_FILE_EXISTS: return EEXIST;
+
+ default:
+ return rc;
+ }
+}
#endif
+
/*
* read an entry from the directory stream; opt for the
* re-entrant friendly way of doing this, if available.
#if HAVE_READDIR_R
struct dirent* p;
int res;
- static unsigned int nm_max = -1;
+ static unsigned int nm_max = (unsigned int)-1;
if (pDirE == NULL) {
return -1;
}
- if (nm_max == -1) {
+ if (nm_max == (unsigned int)-1) {
#ifdef NAME_MAX
nm_max = NAME_MAX + 1;
#else
if (p == NULL) return -1;
res = readdir_r((DIR*)dirPtr, p, pDirE);
if (res != 0) {
- *pDirE = NULL;
+ *pDirE = NULL;
+ free(p);
+ }
+ else if (*pDirE == NULL) {
+ // end of stream
free(p);
}
return res;
}
#endif
}
+
+/*
+ * Function: __hscore_renameFile()
+ *
+ * Provide Haskell98's semantics for renaming files and directories.
+ * It mirrors that of POSIX.1's behaviour for rename() by overwriting
+ * the target if it exists (the MS CRT implementation of rename() returns
+ * an error
+ *
+ */
+HsInt
+__hscore_renameFile( HsAddr src,
+ HsAddr dest)
+{
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__) || defined(_MSC_VER)
+ static int forNT = -1;
+
+ /* ToDo: propagate error codes back */
+ if (MoveFileA(src, dest)) {
+ return 0;
+ } else {
+ ;
+ }
+
+ /* Failed...it could be because the target already existed. */
+ if ( !GetFileAttributes(dest) ) {
+ /* No, it's not there - just fail. */
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+
+ if (forNT == -1) {
+ OSVERSIONINFO ovi;
+ ovi.dwOSVersionInfoSize = sizeof(ovi);
+ if ( !GetVersionEx(&ovi) ) {
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+ forNT = ((ovi.dwPlatformId & VER_PLATFORM_WIN32_NT) != 0);
+ }
+
+ if (forNT) {
+ /* Easy, go for MoveFileEx() */
+ if ( MoveFileExA(src, dest, MOVEFILE_REPLACE_EXISTING) ) {
+ return 0;
+ } else {
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+ }
+
+ /* No MoveFileEx() for Win9x, try deleting the target. */
+ /* Similarly, if the MoveFile*() ops didn't work out under NT */
+ if (DeleteFileA(dest)) {
+ if (MoveFileA(src,dest)) {
+ return 0;
+ } else {
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+ } else {
+ errno = toErrno(GetLastError());
+ return (-1);
+ }
+#else
+ return rename(src,dest);
+#endif
+}
+