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authorvincentdarley <vincentdarley>2003-02-07 15:29:28 (GMT)
committervincentdarley <vincentdarley>2003-02-07 15:29:28 (GMT)
commitbffcbb27b4c0752331ae563dd130038f61ee098d (patch)
treedf0c27aa852fca86559e364d49d3f08ff7d9cac8
parente0cb0bc6b979e367d80f72a624325d14a50ab6eb (diff)
downloadtcl-bffcbb27b4c0752331ae563dd130038f61ee098d.zip
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first speedups to Win filesystem
-rw-r--r--ChangeLog10
-rw-r--r--tests/fileName.test14
-rw-r--r--tests/fileSystem.test25
-rw-r--r--win/tclWinFCmd.c5
-rw-r--r--win/tclWinFile.c331
5 files changed, 233 insertions, 152 deletions
diff --git a/ChangeLog b/ChangeLog
index 587f454..f8dc194 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,15 @@
2003-02-07 Vince Darley <vincentdarley@users.sourceforge.net>
+ * win/tclWinFCmd.c: cleanup long lines
+ * win/tclWinFile.c: sped up pure 'glob' by a factor of 3. It
+ is now faster than Tcl 8.3
+ (but 'foreach f [glob *] { file exists $f }' is still slower)
+ * tests/fileSystem.text:
+ * tests/fileName.test: added new tests to ensure correct
+ behaviour in optimized filesystem code.
+
+2003-02-07 Vince Darley <vincentdarley@users.sourceforge.net>
+
* generic/tclTest.c:
* tests/fileSystem.text: fixed test 7.2 to avoid a possible
crash, and not change the pwd.
diff --git a/tests/fileName.test b/tests/fileName.test
index 5f70555..15bef4e 100644
--- a/tests/fileName.test
+++ b/tests/fileName.test
@@ -10,7 +10,7 @@
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
-# RCS: @(#) $Id: fileName.test,v 1.28 2003/02/04 17:06:52 vincentdarley Exp $
+# RCS: @(#) $Id: fileName.test,v 1.29 2003/02/07 15:29:31 vincentdarley Exp $
if {[lsearch [namespace children] ::tcltest] == -1} {
package require tcltest
@@ -1823,6 +1823,18 @@ test filename-17.1 {windows specific special files} {testsetplatform} {
[file pathtype foo]
} {absolute absolute absolute absolute absolute absolute relative}
+test filename-17.2 {windows specific glob with executable} {winOnly} {
+ makeDirectory execglob
+ makeFile contents execglob/abc.exe
+ makeFile contents execglob/abc.notexecutable
+ set res [glob -nocomplain -dir [temporaryDirectory]/execglob \
+ -tails -types x *]
+ removeFile execglob/abc.exe
+ removeFile execglob/abc.notexecutable
+ removeDirectory execglob
+ set res
+} {abc.exe}
+
# cleanup
catch {file delete -force C:/globTest}
cd [temporaryDirectory]
diff --git a/tests/fileSystem.test b/tests/fileSystem.test
index 9a4f1c2..37a0666 100644
--- a/tests/fileSystem.test
+++ b/tests/fileSystem.test
@@ -420,6 +420,31 @@ test filesystem-7.2 {cross-filesystem copy from vfs maintains mtime} {
removeFile gorp.file
+test filesystem-8.1 {relative path objects and caching of pwd} {
+ set dir [pwd]
+ cd [tcltest::temporaryDirectory]
+ # We created this file several tests ago.
+ makeDirectory abc
+ makeDirectory def
+ makeFile "contents" [file join abc foo]
+ cd abc
+ set f "foo"
+ set res {}
+ lappend res [file exists $f]
+ lappend res [file exists $f]
+ cd ..
+ cd def
+ # If we haven't cleared the object's cwd cache, Tcl
+ # will think it still exists.
+ lappend res [file exists $f]
+ lappend res [file exists $f]
+ removeFile [file join abc foo]
+ removeDirectory abc
+ removeDirectory def
+ cd $dir
+ set res
+} {1 1 0 0}
+
cleanupTests
}
namespace delete ::tcl::test::fileSystem
diff --git a/win/tclWinFCmd.c b/win/tclWinFCmd.c
index 28e7f27..621d352 100644
--- a/win/tclWinFCmd.c
+++ b/win/tclWinFCmd.c
@@ -9,7 +9,7 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclWinFCmd.c,v 1.34 2003/02/04 17:06:53 vincentdarley Exp $
+ * RCS: @(#) $Id: tclWinFCmd.c,v 1.35 2003/02/07 15:29:33 vincentdarley Exp $
*/
#include "tclWinInt.h"
@@ -1136,7 +1136,8 @@ TraverseWinTree(
oldTargetLen = 0; /* lint. */
nativeSource = (TCHAR *) Tcl_DStringValue(sourcePtr);
- nativeTarget = (TCHAR *) (targetPtr == NULL ? NULL : Tcl_DStringValue(targetPtr));
+ nativeTarget = (TCHAR *) (targetPtr == NULL
+ ? NULL : Tcl_DStringValue(targetPtr));
oldSourceLen = Tcl_DStringLength(sourcePtr);
sourceAttr = (*tclWinProcs->getFileAttributesProc)(nativeSource);
diff --git a/win/tclWinFile.c b/win/tclWinFile.c
index f14a558..b67a148 100644
--- a/win/tclWinFile.c
+++ b/win/tclWinFile.c
@@ -11,7 +11,7 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclWinFile.c,v 1.41 2003/01/16 19:01:59 mdejong Exp $
+ * RCS: @(#) $Id: tclWinFile.c,v 1.42 2003/02/07 15:29:34 vincentdarley Exp $
*/
//#define _WIN32_WINNT 0x0500
@@ -147,13 +147,14 @@ typedef NET_API_STATUS NET_API_FUNCTION NETGETDCNAMEPROC
static int NativeAccess(CONST TCHAR *path, int mode);
static int NativeStat(CONST TCHAR *path, Tcl_StatBuf *statPtr, int checkLinks);
+static unsigned short NativeStatMode(DWORD attr, int checkLinks, int isExec);
static int NativeIsExec(CONST TCHAR *path);
static int NativeReadReparse(CONST TCHAR* LinkDirectory,
REPARSE_DATA_BUFFER* buffer);
static int NativeWriteReparse(CONST TCHAR* LinkDirectory,
REPARSE_DATA_BUFFER* buffer);
-static int NativeMatchType(CONST char *name, int nameLen,
- CONST TCHAR* nativeName, Tcl_GlobTypeData *types);
+static int NativeMatchType(int isDrive, DWORD attr, CONST TCHAR* nativeName,
+ Tcl_GlobTypeData *types);
static int WinIsDrive(CONST char *name, int nameLen);
static Tcl_Obj* WinReadLink(CONST TCHAR* LinkSource);
static Tcl_Obj* WinReadLinkDirectory(CONST TCHAR* LinkDirectory);
@@ -671,11 +672,29 @@ TclpMatchInDirectory(interp, resultPtr, pathPtr, pattern, types)
if (pattern == NULL || (*pattern == '\0')) {
Tcl_Obj *norm = Tcl_FSGetNormalizedPath(NULL, pathPtr);
if (norm != NULL) {
+ /* Match a single file directly */
int len;
- char *str = Tcl_GetStringFromObj(norm,&len);
- /* Match a file directly */
+ DWORD attr;
+ CONST char *str = Tcl_GetStringFromObj(norm,&len);
+
nativeName = (CONST TCHAR*) Tcl_FSGetNativePath(pathPtr);
- if (NativeMatchType(str, len, nativeName, types)) {
+
+ if (tclWinProcs->getFileAttributesExProc == NULL) {
+ attr = (*tclWinProcs->getFileAttributesProc)(nativeName);
+ if (attr == 0xffffffff) {
+ return TCL_OK;
+ }
+ } else {
+ WIN32_FILE_ATTRIBUTE_DATA data;
+ if((*tclWinProcs->getFileAttributesExProc)(nativeName,
+ GetFileExInfoStandard,
+ &data) != TRUE) {
+ return TCL_OK;
+ }
+ attr = data.dwFileAttributes;
+ }
+ if (NativeMatchType(WinIsDrive(str,len), attr,
+ nativeName, types)) {
Tcl_ListObjAppendElement(interp, resultPtr, pathPtr);
}
}
@@ -684,10 +703,9 @@ TclpMatchInDirectory(interp, resultPtr, pathPtr, pattern, types)
char drivePat[] = "?:\\";
const char *message;
CONST char *dir;
- char *root;
int dirLength;
Tcl_DString dirString;
- DWORD attr, volFlags;
+ DWORD attr;
HANDLE handle;
WIN32_FIND_DATAT data;
BOOL found;
@@ -710,6 +728,7 @@ TclpMatchInDirectory(interp, resultPtr, pathPtr, pattern, types)
Tcl_DStringAppend(&dsOrig, Tcl_GetString(fileNamePtr), -1);
dirLength = Tcl_DStringLength(&dsOrig);
+
Tcl_DStringInit(&dirString);
if (dirLength == 0) {
Tcl_DStringAppend(&dirString, ".\\", 2);
@@ -747,54 +766,6 @@ TclpMatchInDirectory(interp, resultPtr, pathPtr, pattern, types)
}
/*
- * Next check the volume information for the directory to see
- * whether comparisons should be case sensitive or not. If the
- * root is null, then we use the root of the current directory.
- * If the root is just a drive specifier, we use the root
- * directory of the given drive.
- */
-
- switch (Tcl_GetPathType(dir)) {
- case TCL_PATH_RELATIVE:
- found = GetVolumeInformationA(NULL, NULL, 0, NULL, NULL,
- &volFlags, NULL, 0);
- break;
- case TCL_PATH_VOLUME_RELATIVE:
- if (dir[0] == '\\') {
- root = NULL;
- } else {
- root = drivePat;
- *root = dir[0];
- }
- found = GetVolumeInformationA(root, NULL, 0, NULL, NULL,
- &volFlags, NULL, 0);
- break;
- case TCL_PATH_ABSOLUTE:
- if (dir[1] == ':') {
- root = drivePat;
- *root = dir[0];
- found = GetVolumeInformationA(root, NULL, 0, NULL, NULL,
- &volFlags, NULL, 0);
- } else if (dir[1] == '\\') {
- char *p;
-
- p = strchr(dir + 2, '\\');
- p = strchr(p + 1, '\\');
- p++;
- nativeName = Tcl_WinUtfToTChar(dir, p - dir, &ds);
- found = (*tclWinProcs->getVolumeInformationProc)(nativeName,
- NULL, 0, NULL, NULL, &volFlags, NULL, 0);
- Tcl_DStringFree(&ds);
- }
- break;
- }
-
- if (found == 0) {
- message = "couldn't read volume information for \"";
- goto error;
- }
-
- /*
* Check to see if the pattern should match the special
* . and .. names, referring to the current directory,
* or the directory above. We need a special check for
@@ -831,14 +802,19 @@ TclpMatchInDirectory(interp, resultPtr, pathPtr, pattern, types)
for (found = 1; found != 0;
found = (*tclWinProcs->findNextFileProc)(handle, &data)) {
- CONST TCHAR *nativeMatchResult;
- CONST char *name, *fname;
+ CONST char *name, *fullname;
+ int checkDrive = 0;
+ int isDrive;
+ DWORD attr;
if (tclWinProcs->useWide) {
nativeName = (CONST TCHAR *) data.w.cFileName;
+ attr = data.w.dwFileAttributes;
} else {
nativeName = (CONST TCHAR *) data.a.cFileName;
+ attr = data.a.dwFileAttributes;
}
+
name = Tcl_WinTCharToUtf(nativeName, -1, &ds);
if (!matchSpecialDots) {
@@ -846,9 +822,19 @@ TclpMatchInDirectory(interp, resultPtr, pathPtr, pattern, types)
if (name[0] == '.') {
if (name[1] == '\0'
|| (name[1] == '.' && name[2] == '\0')) {
+ Tcl_DStringFree(&ds);
continue;
}
}
+ } else {
+ if (name[0] == '.' && name[1] == '.' && name[2] == '\0') {
+ /*
+ * Have to check if this is a drive below, so
+ * we can correctly match 'hidden' and not hidden
+ * files.
+ */
+ checkDrive = 1;
+ }
}
/*
@@ -863,14 +849,8 @@ TclpMatchInDirectory(interp, resultPtr, pathPtr, pattern, types)
* the system.
*/
- nativeMatchResult = NULL;
-
- if (Tcl_StringCaseMatch(name, pattern, 1) != 0) {
- nativeMatchResult = nativeName;
- }
- Tcl_DStringFree(&ds);
-
- if (nativeMatchResult == NULL) {
+ if (Tcl_StringCaseMatch(name, pattern, 1) == 0) {
+ Tcl_DStringFree(&ds);
continue;
}
@@ -879,18 +859,21 @@ TclpMatchInDirectory(interp, resultPtr, pathPtr, pattern, types)
* of the path.
*/
- name = Tcl_WinTCharToUtf(nativeMatchResult, -1, &ds);
Tcl_DStringAppend(&dsOrig, name, -1);
Tcl_DStringFree(&ds);
- fname = Tcl_DStringValue(&dsOrig);
- nativeName = Tcl_WinUtfToTChar(fname, Tcl_DStringLength(&dsOrig),
- &ds);
+ fullname = Tcl_DStringValue(&dsOrig);
+ nativeName = Tcl_WinUtfToTChar(fullname,
+ Tcl_DStringLength(&dsOrig), &ds);
- if (NativeMatchType(fname, Tcl_DStringLength(&dsOrig),
- nativeName, types)) {
+ if (checkDrive) {
+ isDrive = WinIsDrive(fullname, Tcl_DStringLength(&dsOrig));
+ } else {
+ isDrive = 0;
+ }
+ if (NativeMatchType(isDrive, attr, nativeName, types)) {
Tcl_ListObjAppendElement(interp, resultPtr,
- Tcl_NewStringObj(fname, Tcl_DStringLength(&dsOrig)));
+ Tcl_NewStringObj(fullname, Tcl_DStringLength(&dsOrig)));
}
/*
* Free ds here to ensure that nativeName is valid above.
@@ -971,17 +954,32 @@ WinIsDrive(
}
return 0;
}
-
-/*
+/*
+ *----------------------------------------------------------------------
+ *
+ * NativeMatchType --
+ *
* This function needs a special case for a path which is a root
* volume, because for NTFS root volumes, the getFileAttributesProc
* returns a 'hidden' attribute when it should not.
+ *
+ * We only ever make one call to a 'get attributes' routine here,
+ * so that this function is as fast as possible. Unfortunately,
+ * it still means we have to make the call for every single file
+ * we return from 'glob', which is not ideal.
+ *
+ * Results:
+ * 0 = file doesn't match
+ * 1 = file matches
+ *
+ *----------------------------------------------------------------------
*/
static int
NativeMatchType(
- CONST char *name, /* Name */
- int nameLen, /* Length of name */
+ int isDrive, /* Is this a drive */
+ DWORD attr, /* We already know the attributes
+ * for the file */
CONST TCHAR* nativeName, /* Native path to check */
Tcl_GlobTypeData *types) /* Type description to match against */
{
@@ -990,23 +988,15 @@ NativeMatchType(
* want to retrieve this info if it is absolutely necessary
* because it is an expensive call. Unfortunately, to deal
* with hidden files properly, we must always retrieve it.
- * There are more modern Win32 APIs available which we should
- * look into.
*/
- DWORD attr = (*tclWinProcs->getFileAttributesProc)(nativeName);
- if (attr == 0xffffffff) {
- /* File doesn't exist */
- return 0;
- }
-
if (types == NULL) {
/* If invisible, don't return the file */
- if (attr & FILE_ATTRIBUTE_HIDDEN && !WinIsDrive(name, nameLen)) {
+ if (attr & FILE_ATTRIBUTE_HIDDEN && !isDrive) {
return 0;
}
} else {
- if (attr & FILE_ATTRIBUTE_HIDDEN && !WinIsDrive(name, nameLen)) {
+ if (attr & FILE_ATTRIBUTE_HIDDEN && !isDrive) {
/* If invisible */
if ((types->perm == 0) ||
!(types->perm & TCL_GLOB_PERM_HIDDEN)) {
@@ -1024,54 +1014,52 @@ NativeMatchType(
((types->perm & TCL_GLOB_PERM_RONLY) &&
!(attr & FILE_ATTRIBUTE_READONLY)) ||
((types->perm & TCL_GLOB_PERM_R) &&
- (NativeAccess(nativeName, R_OK) != 0)) ||
+ (0 /* File exists => R_OK on Windows */)) ||
((types->perm & TCL_GLOB_PERM_W) &&
- (NativeAccess(nativeName, W_OK) != 0)) ||
+ (attr & FILE_ATTRIBUTE_READONLY)) ||
((types->perm & TCL_GLOB_PERM_X) &&
- (NativeAccess(nativeName, X_OK) != 0))
+ (!(attr & FILE_ATTRIBUTE_DIRECTORY)
+ && !NativeIsExec(nativeName)))
) {
return 0;
}
}
- if (types->type != 0) {
- Tcl_StatBuf buf;
+ if ((types->type & TCL_GLOB_TYPE_DIR)
+ && (attr & FILE_ATTRIBUTE_DIRECTORY)) {
+ /* Quicker test for directory, which is a common case */
+ return 1;
+ } else if (types->type != 0) {
+ unsigned short st_mode;
+ int isExec = NativeIsExec(nativeName);
- if (NativeStat(nativeName, &buf, 0) != 0) {
- /*
- * Posix error occurred, either the file
- * has disappeared, or there is some other
- * strange error. In any case we don't
- * return this file.
- */
- return 0;
- }
+ st_mode = NativeStatMode(attr, 0, isExec);
+
/*
* In order bcdpfls as in 'find -t'
*/
if (
((types->type & TCL_GLOB_TYPE_BLOCK) &&
- S_ISBLK(buf.st_mode)) ||
+ S_ISBLK(st_mode)) ||
((types->type & TCL_GLOB_TYPE_CHAR) &&
- S_ISCHR(buf.st_mode)) ||
+ S_ISCHR(st_mode)) ||
((types->type & TCL_GLOB_TYPE_DIR) &&
- S_ISDIR(buf.st_mode)) ||
+ S_ISDIR(st_mode)) ||
((types->type & TCL_GLOB_TYPE_PIPE) &&
- S_ISFIFO(buf.st_mode)) ||
+ S_ISFIFO(st_mode)) ||
((types->type & TCL_GLOB_TYPE_FILE) &&
- S_ISREG(buf.st_mode))
+ S_ISREG(st_mode))
#ifdef S_ISSOCK
|| ((types->type & TCL_GLOB_TYPE_SOCK) &&
- S_ISSOCK(buf.st_mode))
+ S_ISSOCK(st_mode))
#endif
) {
/* Do nothing -- this file is ok */
} else {
#ifdef S_ISLNK
if (types->type & TCL_GLOB_TYPE_LINK) {
- if (NativeStat(nativeName, &buf, 1) == 0) {
- if (S_ISLNK(buf.st_mode)) {
- return 1;
- }
+ st_mode = NativeStatMode(attr, 1, isExec);
+ if (S_ISLNK(st_mode)) {
+ return 1;
}
}
#endif
@@ -1206,7 +1194,6 @@ TclpGetUserHome(name, bufferPtr)
return result;
}
-
/*
*---------------------------------------------------------------------------
@@ -1272,39 +1259,67 @@ NativeAccess(
return 0;
}
+/*
+ *----------------------------------------------------------------------
+ *
+ * NativeIsExec --
+ *
+ * Determines if a path is executable. On windows this is
+ * simply defined by whether the path ends in any of ".exe",
+ * ".com", or ".bat"
+ *
+ * Results:
+ * 1 = executable, 0 = not.
+ *
+ *----------------------------------------------------------------------
+ */
static int
NativeIsExec(nativePath)
CONST TCHAR *nativePath;
{
- CONST char *p, *path;
- Tcl_DString ds;
-
- /*
- * This is really not efficient. We should be able to examine
- * the native path directly without converting to UTF.
- */
- Tcl_DStringInit(&ds);
- path = Tcl_WinTCharToUtf(nativePath, -1, &ds);
-
- p = strrchr(path, '.');
- if (p != NULL) {
- p++;
- /*
- * Note: in the old code, stat considered '.pif' files as
- * executable, whereas access did not.
- */
- if ((stricmp(p, "exe") == 0)
- || (stricmp(p, "com") == 0)
- || (stricmp(p, "bat") == 0)) {
- /*
- * File that ends with .exe, .com, or .bat is executable.
+ if (tclWinProcs->useWide) {
+ CONST WCHAR *path;
+ int len;
+
+ path = (CONST WCHAR*)nativePath;
+ len = wcslen(path);
+
+ if (len < 5) {
+ return 0;
+ }
+
+ if (path[len-4] != L'.') {
+ return 0;
+ }
+
+ if ((memcmp((char*)(path+len-3),L"exe",3*sizeof(WCHAR)) == 0)
+ || (memcmp((char*)(path+len-3),L"com",3*sizeof(WCHAR)) == 0)
+ || (memcmp((char*)(path+len-3),L"bat",3*sizeof(WCHAR)) == 0)) {
+ return 1;
+ }
+ } else {
+ CONST char *p;
+
+ /* We are only looking for pure ascii */
+
+ p = strrchr((CONST char*)nativePath, '.');
+ if (p != NULL) {
+ p++;
+ /*
+ * Note: in the old code, stat considered '.pif' files as
+ * executable, whereas access did not.
*/
+ if ((stricmp(p, "exe") == 0)
+ || (stricmp(p, "com") == 0)
+ || (stricmp(p, "bat") == 0)) {
+ /*
+ * File that ends with .exe, .com, or .bat is executable.
+ */
- Tcl_DStringFree(&ds);
- return 1;
+ return 1;
+ }
}
}
- Tcl_DStringFree(&ds);
return 0;
}
@@ -1526,7 +1541,8 @@ NativeStat(nativePath, statPtr, checkLinks)
WCHAR nativeFullPath[MAX_PATH];
TCHAR *nativePart;
CONST char *fullPath;
- int dev, mode;
+ int dev;
+ unsigned short mode;
if (tclWinProcs->getFileAttributesExProc == NULL) {
/*
@@ -1675,6 +1691,31 @@ NativeStat(nativePath, statPtr, checkLinks)
statPtr->st_ctime = ToCTime(data.ftCreationTime);
}
+ mode = NativeStatMode(attr, checkLinks, NativeIsExec(nativePath));
+
+ statPtr->st_dev = (dev_t) dev;
+ statPtr->st_ino = 0;
+ statPtr->st_mode = mode;
+ statPtr->st_nlink = 1;
+ statPtr->st_uid = 0;
+ statPtr->st_gid = 0;
+ statPtr->st_rdev = (dev_t) dev;
+ return 0;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NativeStatMode --
+ *
+ * Calculate just the 'st_mode' field of a 'stat' structure.
+ *
+ *----------------------------------------------------------------------
+ */
+static unsigned short
+NativeStatMode(DWORD attr, int checkLinks, int isExec)
+{
+ int mode;
if (checkLinks && (attr & FILE_ATTRIBUTE_REPARSE_POINT)) {
/* It is a link */
mode = S_IFLNK;
@@ -1682,7 +1723,7 @@ NativeStat(nativePath, statPtr, checkLinks)
mode = (attr & FILE_ATTRIBUTE_DIRECTORY) ? S_IFDIR | S_IEXEC : S_IFREG;
}
mode |= (attr & FILE_ATTRIBUTE_READONLY) ? S_IREAD : S_IREAD | S_IWRITE;
- if (NativeIsExec(nativePath)) {
+ if (isExec) {
mode |= S_IEXEC;
}
@@ -1693,17 +1734,9 @@ NativeStat(nativePath, statPtr, checkLinks)
mode |= (mode & 0x0700) >> 3;
mode |= (mode & 0x0700) >> 6;
-
- statPtr->st_dev = (dev_t) dev;
- statPtr->st_ino = 0;
- statPtr->st_mode = (unsigned short) mode;
- statPtr->st_nlink = 1;
- statPtr->st_uid = 0;
- statPtr->st_gid = 0;
- statPtr->st_rdev = (dev_t) dev;
- return 0;
+ return (unsigned short)mode;
}
-
+
static time_t
ToCTime(
FILETIME fileTime) /* UTC Time to convert to local time_t. */