diff options
Diffstat (limited to 'win/tclWinFile.c')
| -rw-r--r-- | win/tclWinFile.c | 281 |
1 files changed, 145 insertions, 136 deletions
diff --git a/win/tclWinFile.c b/win/tclWinFile.c index aeae4bc..1961818 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 1.77 2005/08/31 15:12:18 vincentdarley Exp $ + * RCS: @(#) $Id: tclWinFile.c,v 1.78 2005/10/23 18:51:31 vincentdarley Exp $ */ //#define _WIN32_WINNT 0x0500 @@ -182,6 +182,7 @@ typedef NET_API_STATUS NET_API_FUNCTION NETGETDCNAMEPROC( */ static int NativeAccess(CONST TCHAR *path, int mode); +static int NativeDev(CONST TCHAR *path); static int NativeStat(CONST TCHAR *path, Tcl_StatBuf *statPtr, int checkLinks); static unsigned short NativeStatMode(DWORD attr, int checkLinks, int isExec); @@ -1954,25 +1955,6 @@ TclpObjStat(pathPtr, statPtr) Tcl_Obj *pathPtr; /* Path of file to stat. */ Tcl_StatBuf *statPtr; /* Filled with results of stat call. */ { -#ifdef OLD_API - Tcl_Obj *transPtr; - - /* - * Eliminate file names containing wildcard characters, or subsequent call - * to FindFirstFile() will expand them, matching some other file. - */ - - transPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr); - if (transPtr == NULL || (strpbrk(Tcl_GetString(transPtr), "?*") != NULL)) { - if (transPtr != NULL) { - Tcl_DecrRefCount(transPtr); - } - Tcl_SetErrno(ENOENT); - return -1; - } - Tcl_DecrRefCount(transPtr); -#endif - /* * Ensure correct file sizes by forcing the OS to write any pending data * to disk. This is done only for channels which are dirty, i.e. have been @@ -2013,18 +1995,82 @@ NativeStat(nativePath, statPtr, checkLinks) Tcl_StatBuf *statPtr; /* Filled with results of stat call. */ int checkLinks; /* If non-zero, behave like 'lstat' */ { - Tcl_DString ds; DWORD attr; - WCHAR nativeFullPath[MAX_PATH]; - TCHAR *nativePart; - CONST char *fullPath; int dev; unsigned short mode; + int nlink = 1; + unsigned int inode = 0; + HANDLE fileHandle; + + /* + * If we can use 'createFile' on this, then we can use the + * resulting fileHandle to read more information (nlink, ino) + * than we can get from other attributes reading APIs. If not, + * then we try to fall back on the 'getFileAttributesExProc', + * and if that isn't available, then on even simpler routines. + */ + fileHandle = (tclWinProcs->createFileProc) ( + nativePath, GENERIC_READ, 0, NULL, OPEN_EXISTING, + FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, NULL); + + if (fileHandle != INVALID_HANDLE_VALUE) { + BY_HANDLE_FILE_INFORMATION data; + + if (GetFileInformationByHandle(fileHandle,&data) != TRUE) { + CloseHandle(fileHandle); + Tcl_SetErrno(ENOENT); + return -1; + } + CloseHandle(fileHandle); + + attr = data.dwFileAttributes; - if (tclWinProcs->getFileAttributesExProc == NULL) { + statPtr->st_size = ((Tcl_WideInt)data.nFileSizeLow) | + (((Tcl_WideInt)data.nFileSizeHigh) << 32); + statPtr->st_atime = ToCTime(data.ftLastAccessTime); + statPtr->st_mtime = ToCTime(data.ftLastWriteTime); + statPtr->st_ctime = ToCTime(data.ftCreationTime); + /* - * We don't have the faster attributes proc, so we're probably running - * on Win95. + * On Unix, for directories, nlink apparently depends on the + * number of files in the directory. We could calculate that, + * but it would be a bit of a performance penalty, I think. + * Hence we just use what Windows gives us, which is the + * same as Unix for files, at least. + */ + nlink = data.nNumberOfLinks; + /* + * Unfortunately our stat definition's inode field (unsigned + * short) will throw away most of the precision we have here, + * which means we can't rely on inode as a unique identifier of + * a file. We'd really like to do something like how we handle + * 'st_size'. + */ + inode = data.nFileIndexHigh | data.nFileIndexLow; + } else if (tclWinProcs->getFileAttributesExProc != NULL) { + /* + * Fall back on the less capable routines. This means + * no nlink or ino. + */ + WIN32_FILE_ATTRIBUTE_DATA data; + + if ((*tclWinProcs->getFileAttributesExProc)(nativePath, + GetFileExInfoStandard, &data) != TRUE) { + Tcl_SetErrno(ENOENT); + return -1; + } + + attr = data.dwFileAttributes; + + statPtr->st_size = ((Tcl_WideInt)data.nFileSizeLow) | + (((Tcl_WideInt)data.nFileSizeHigh) << 32); + statPtr->st_atime = ToCTime(data.ftLastAccessTime); + statPtr->st_mtime = ToCTime(data.ftLastWriteTime); + statPtr->st_ctime = ToCTime(data.ftCreationTime); + } else { + /* + * We don't have the faster attributes proc, so we're probably + * running on Win95. */ WIN32_FIND_DATAT data; @@ -2044,8 +2090,8 @@ NativeStat(nativePath, statPtr, checkLinks) } /* - * Make up some fake information for this file. It has the correct - * file attributes and a time of 0. + * Make up some fake information for this file. It has the + * correct file attributes and a time of 0. */ memset(&data, 0, sizeof(data)); @@ -2054,51 +2100,6 @@ NativeStat(nativePath, statPtr, checkLinks) FindClose(handle); } - (*tclWinProcs->getFullPathNameProc)(nativePath, MAX_PATH, - nativeFullPath, &nativePart); - - fullPath = Tcl_WinTCharToUtf((TCHAR *) nativeFullPath, -1, &ds); - - dev = -1; - if ((fullPath[0] == '\\') && (fullPath[1] == '\\')) { - CONST char *p; - DWORD dw; - CONST TCHAR *nativeVol; - Tcl_DString volString; - - p = strchr(fullPath + 2, '\\'); - p = strchr(p + 1, '\\'); - if (p == NULL) { - /* - * Add terminating backslash to fullpath or - * GetVolumeInformation() won't work. - */ - - fullPath = Tcl_DStringAppend(&ds, "\\", 1); - p = fullPath + Tcl_DStringLength(&ds); - } else { - p++; - } - nativeVol = Tcl_WinUtfToTChar(fullPath, p - fullPath, &volString); - dw = (DWORD) -1; - (*tclWinProcs->getVolumeInformationProc)(nativeVol, NULL, 0, &dw, - NULL, NULL, NULL, 0); - - /* - * GetFullPathName() turns special devices like "NUL" into - * "\\.\NUL", but GetVolumeInformation() returns failure for - * "\\.\NUL". This will cause "NUL" to get a drive number of -1, - * which makes about as much sense as anything since the special - * devices don't live on any drive. - */ - - dev = dw; - Tcl_DStringFree(&volString); - } else if ((fullPath[0] != '\0') && (fullPath[1] == ':')) { - dev = Tcl_UniCharToLower(fullPath[0]) - 'a'; - } - Tcl_DStringFree(&ds); - attr = data.a.dwFileAttributes; statPtr->st_size = ((Tcl_WideInt)data.a.nFileSizeLow) | @@ -2106,79 +2107,87 @@ NativeStat(nativePath, statPtr, checkLinks) statPtr->st_atime = ToCTime(data.a.ftLastAccessTime); statPtr->st_mtime = ToCTime(data.a.ftLastWriteTime); statPtr->st_ctime = ToCTime(data.a.ftCreationTime); - } else { - WIN32_FILE_ATTRIBUTE_DATA data; - - if ((*tclWinProcs->getFileAttributesExProc)(nativePath, - GetFileExInfoStandard, &data) != TRUE) { - Tcl_SetErrno(ENOENT); - return -1; - } - - (*tclWinProcs->getFullPathNameProc)(nativePath, MAX_PATH, - nativeFullPath, &nativePart); + } + + dev = NativeDev(nativePath); + mode = NativeStatMode(attr, checkLinks, NativeIsExec(nativePath)); - fullPath = Tcl_WinTCharToUtf((TCHAR *) nativeFullPath, -1, &ds); + statPtr->st_dev = (dev_t) dev; + statPtr->st_ino = inode; + statPtr->st_mode = mode; + statPtr->st_nlink = nlink; + statPtr->st_uid = 0; + statPtr->st_gid = 0; + statPtr->st_rdev = (dev_t) dev; + return 0; +} + +/* + *---------------------------------------------------------------------- + * + * NativeDev -- + * + * Calculate just the 'st_dev' field of a 'stat' structure. + * + *---------------------------------------------------------------------- + */ +static int +NativeDev(nativePath) + CONST TCHAR *nativePath; /* Full path of file to stat */ +{ + int dev; + Tcl_DString ds; + WCHAR nativeFullPath[MAX_PATH]; + TCHAR *nativePart; + CONST char *fullPath; + + (*tclWinProcs->getFullPathNameProc)(nativePath, MAX_PATH, + nativeFullPath, &nativePart); - dev = -1; - if ((fullPath[0] == '\\') && (fullPath[1] == '\\')) { - CONST char *p; - DWORD dw; - CONST TCHAR *nativeVol; - Tcl_DString volString; - - p = strchr(fullPath + 2, '\\'); - p = strchr(p + 1, '\\'); - if (p == NULL) { - /* - * Add terminating backslash to fullpath or - * GetVolumeInformation() won't work. - */ + fullPath = Tcl_WinTCharToUtf((TCHAR*)nativeFullPath, -1, &ds); - fullPath = Tcl_DStringAppend(&ds, "\\", 1); - p = fullPath + Tcl_DStringLength(&ds); - } else { - p++; - } - nativeVol = Tcl_WinUtfToTChar(fullPath, p - fullPath, &volString); - dw = (DWORD) -1; - (*tclWinProcs->getVolumeInformationProc)(nativeVol, NULL, 0, &dw, - NULL, NULL, NULL, 0); + if ((fullPath[0] == '\\') && (fullPath[1] == '\\')) { + CONST char *p; + DWORD dw; + CONST TCHAR *nativeVol; + Tcl_DString volString; + p = strchr(fullPath + 2, '\\'); + p = strchr(p + 1, '\\'); + if (p == NULL) { /* - * GetFullPathName() turns special devices like "NUL" into - * "\\.\NUL", but GetVolumeInformation() returns failure for - * "\\.\NUL". This will cause "NUL" to get a drive number of -1, - * which makes about as much sense as anything since the special - * devices don't live on any drive. + * Add terminating backslash to fullpath or + * GetVolumeInformation() won't work. */ - dev = dw; - Tcl_DStringFree(&volString); - } else if ((fullPath[0] != '\0') && (fullPath[1] == ':')) { - dev = Tcl_UniCharToLower(fullPath[0]) - 'a'; + fullPath = Tcl_DStringAppend(&ds, "\\", 1); + p = fullPath + Tcl_DStringLength(&ds); + } else { + p++; } - Tcl_DStringFree(&ds); + nativeVol = Tcl_WinUtfToTChar(fullPath, p - fullPath, &volString); + dw = (DWORD) -1; + (*tclWinProcs->getVolumeInformationProc)(nativeVol, NULL, 0, &dw, + NULL, NULL, NULL, 0); - attr = data.dwFileAttributes; + /* + * GetFullPathName() turns special devices like "NUL" into + * "\\.\NUL", but GetVolumeInformation() returns failure for + * "\\.\NUL". This will cause "NUL" to get a drive number of -1, + * which makes about as much sense as anything since the special + * devices don't live on any drive. + */ - statPtr->st_size = ((Tcl_WideInt)data.nFileSizeLow) | - (((Tcl_WideInt)data.nFileSizeHigh) << 32); - statPtr->st_atime = ToCTime(data.ftLastAccessTime); - statPtr->st_mtime = ToCTime(data.ftLastWriteTime); - statPtr->st_ctime = ToCTime(data.ftCreationTime); + dev = dw; + Tcl_DStringFree(&volString); + } else if ((fullPath[0] != '\0') && (fullPath[1] == ':')) { + dev = Tcl_UniCharToLower(fullPath[0]) - 'a'; + } else { + dev = -1; } - - 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; + Tcl_DStringFree(&ds); + + return dev; } /* |