/*
- * (c) The GRASP/AQUA Project, Glasgow University, 1994-
+ * (c) The University of Glasgow 2002
*
* Directory Runtime Support
*/
-#include "dirUtils.h"
-#if defined(mingw32_TARGET_OS)
-#include <windows.h>
-#endif
+#include "ghcconfig.h"
-#ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#ifdef HAVE_STDDEF_H
-# include <stddef.h>
-#endif
-#ifdef HAVE_ERRNO_H
-# include <errno.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
-HsInt
-prel_mkdir(HsAddr pathName, HsInt mode)
+#include "HsBase.h"
+
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__) || defined(_MSC_VER)
+#include <windows.h>
+
+static
+int
+toErrno(DWORD rc)
{
-#if defined(mingw32_TARGET_OS)
- return mkdir(pathName);
-#else
- return mkdir(pathName,mode);
-#endif
+ 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.
+ */
HsInt
-prel_lstat(HsAddr fname, HsAddr st)
+__hscore_readdir( HsAddr dirPtr, HsAddr pDirEnt )
{
-#ifdef HAVE_LSTAT
- return lstat((const char*)fname, (struct stat*)st);
+ struct dirent **pDirE = (struct dirent**)pDirEnt;
+#if HAVE_READDIR_R
+ struct dirent* p;
+ int res;
+ static unsigned int nm_max = (unsigned int)-1;
+
+ if (pDirE == NULL) {
+ return -1;
+ }
+ if (nm_max == (unsigned int)-1) {
+#ifdef NAME_MAX
+ nm_max = NAME_MAX + 1;
#else
- return stat((const char*)fname, (struct stat*)st);
+ nm_max = pathconf(".", _PC_NAME_MAX);
+ if (nm_max == -1) { nm_max = 255; }
+ nm_max++;
#endif
-}
+ }
+ p = (struct dirent*)malloc(sizeof(struct dirent) + nm_max);
+ if (p == NULL) return -1;
+ res = readdir_r((DIR*)dirPtr, p, pDirE);
+ if (res != 0) {
+ *pDirE = NULL;
+ free(p);
+ }
+ else if (*pDirE == NULL) {
+ // end of stream
+ free(p);
+ }
+ return res;
+#else
-HsInt prel_s_ISDIR(mode_t m) {return S_ISDIR(m);}
-HsInt prel_s_ISREG(mode_t m) {return S_ISREG(m);}
+ if (pDirE == NULL) {
+ return -1;
+ }
-HsInt prel_sz_stat() { return sizeof(struct stat); }
-HsInt prel_path_max() { return PATH_MAX; }
-mode_t prel_R_OK() { return R_OK; }
-mode_t prel_W_OK() { return W_OK; }
-mode_t prel_X_OK() { return X_OK; }
+ *pDirE = readdir((DIR*)dirPtr);
+ if (*pDirE == NULL) {
+ return -1;
+ } else {
+ return 0;
+ }
+#endif
+}
-mode_t prel_S_IRUSR() { return S_IRUSR; }
-mode_t prel_S_IWUSR() { return S_IWUSR; }
-mode_t prel_S_IXUSR() { return S_IXUSR; }
+/*
+ * 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);
+ }
-time_t prel_st_mtime(struct stat* st) { return st->st_mtime; }
-mode_t prel_st_mode(struct stat* st) { return st->st_mode; }
+ 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);
+ }
+ }
-HsAddr prel_d_name(struct dirent* d)
-{
-#ifndef mingw32_TARGET_OS
- return (HsAddr)(&d->d_name);
+ /* 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 (HsAddr)(d->d_name);
+ return rename(src,dest);
#endif
}
-HsInt prel_end_of_dir()
+/*
+ * Function: __hscore_getFolderPath()
+ *
+ * Late-bound version of SHGetFolderPath(), coping with OS versions
+ * that have shell32's lacking that particular API.
+ *
+ */
+#if defined(mingw32_HOST_OS) || defined(__MINGW32__) || defined(_MSC_VER)
+typedef HRESULT (*HSCORE_GETAPPFOLDERFUNTY)(HWND,int,HANDLE,DWORD,char*);
+int
+__hscore_getFolderPath(HWND hwndOwner,
+ int nFolder,
+ HANDLE hToken,
+ DWORD dwFlags,
+ char* pszPath)
{
-#ifndef mingw32_TARGET_OS
- return 0;
-#else
- return ENOENT;
-#endif
+ static int loaded_dll = 0;
+ static HMODULE hMod = (HMODULE)NULL;
+ static HSCORE_GETAPPFOLDERFUNTY funcPtr = NULL;
+ /* The DLLs to try loading entry point from */
+ char* dlls[] = { "shell32.dll", "shfolder.dll" };
+
+ if (loaded_dll < 0) {
+ return (-1);
+ } else if (loaded_dll == 0) {
+ int i;
+ for(i=0;i < sizeof(dlls); i++) {
+ hMod = LoadLibrary(dlls[i]);
+ if ( hMod != NULL &&
+ (funcPtr = (HSCORE_GETAPPFOLDERFUNTY)GetProcAddress(hMod, "SHGetFolderPathA")) ) {
+ loaded_dll = 1;
+ break;
+ }
+ }
+ if (loaded_dll == 0) {
+ loaded_dll = (-1);
+ return (-1);
+ }
+ }
+ /* OK, if we got this far the function has been bound */
+ return (int)funcPtr(hwndOwner,nFolder,hToken,dwFlags,pszPath);
+ /* ToDo: unload the DLL on shutdown? */
}
-
+#endif
projects / ghc-base.git / blobdiff