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/*
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* tclWinChan.c
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|
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*
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* Channel drivers for Windows channels based on files, command
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|
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* pipes and TCP sockets.
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6 |
*
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* Copyright (c) 1995-1997 Sun Microsystems, Inc.
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*
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|
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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|
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*
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* RCS: @(#) $Id: tclWinChan.c,v 1.30.2.5 2006/08/30 17:53:28 hobbs Exp $
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|
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*/
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#include "tclWinInt.h"
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#include "tclIO.h"
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17 |
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18 |
/*
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* State flags used in the info structures below.
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*/
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#define FILE_PENDING (1<<0) /* Message is pending in the queue. */
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#define FILE_ASYNC (1<<1) /* Channel is non-blocking. */
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#define FILE_APPEND (1<<2) /* File is in append mode. */
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#define FILE_TYPE_SERIAL (FILE_TYPE_PIPE+1)
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#define FILE_TYPE_CONSOLE (FILE_TYPE_PIPE+2)
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28 |
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/*
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* The following structure contains per-instance data for a file based channel.
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*/
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typedef struct FileInfo {
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Tcl_Channel channel; /* Pointer to channel structure. */
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int validMask; /* OR'ed combination of TCL_READABLE,
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* TCL_WRITABLE, or TCL_EXCEPTION: indicates
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* which operations are valid on the file. */
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int watchMask; /* OR'ed combination of TCL_READABLE,
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* TCL_WRITABLE, or TCL_EXCEPTION: indicates
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* which events should be reported. */
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int flags; /* State flags, see above for a list. */
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HANDLE handle; /* Input/output file. */
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struct FileInfo *nextPtr; /* Pointer to next registered file. */
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int dirty; /* Boolean flag. Set if the OS may have data
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* pending on the channel */
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} FileInfo;
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typedef struct ThreadSpecificData {
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/*
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* List of all file channels currently open.
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*/
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FileInfo *firstFilePtr;
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} ThreadSpecificData;
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55 |
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static Tcl_ThreadDataKey dataKey;
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/*
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* The following structure is what is added to the Tcl event queue when
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* file events are generated.
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*/
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typedef struct FileEvent {
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Tcl_Event header; /* Information that is standard for
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* all events. */
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FileInfo *infoPtr; /* Pointer to file info structure. Note
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* that we still have to verify that the
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* file exists before dereferencing this
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* pointer. */
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} FileEvent;
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/*
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* Static routines for this file:
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*/
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static int FileBlockProc _ANSI_ARGS_((ClientData instanceData,
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|
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int mode));
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static void FileChannelExitHandler _ANSI_ARGS_((
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|
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ClientData clientData));
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static void FileCheckProc _ANSI_ARGS_((ClientData clientData,
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int flags));
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static int FileCloseProc _ANSI_ARGS_((ClientData instanceData,
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Tcl_Interp *interp));
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static int FileEventProc _ANSI_ARGS_((Tcl_Event *evPtr,
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|
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int flags));
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static int FileGetHandleProc _ANSI_ARGS_((ClientData instanceData,
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|
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int direction, ClientData *handlePtr));
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static ThreadSpecificData *FileInit _ANSI_ARGS_((void));
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static int FileInputProc _ANSI_ARGS_((ClientData instanceData,
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char *buf, int toRead, int *errorCode));
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static int FileOutputProc _ANSI_ARGS_((ClientData instanceData,
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|
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CONST char *buf, int toWrite, int *errorCode));
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static int FileSeekProc _ANSI_ARGS_((ClientData instanceData,
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long offset, int mode, int *errorCode));
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static Tcl_WideInt FileWideSeekProc _ANSI_ARGS_((ClientData instanceData,
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Tcl_WideInt offset, int mode, int *errorCode));
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static void FileSetupProc _ANSI_ARGS_((ClientData clientData,
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int flags));
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static void FileWatchProc _ANSI_ARGS_((ClientData instanceData,
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int mask));
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static void FileThreadActionProc _ANSI_ARGS_ ((
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ClientData instanceData, int action));
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static DWORD FileGetType _ANSI_ARGS_((HANDLE handle));
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/*
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* This structure describes the channel type structure for file based IO.
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*/
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static Tcl_ChannelType fileChannelType = {
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"file", /* Type name. */
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TCL_CHANNEL_VERSION_4, /* v4 channel */
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FileCloseProc, /* Close proc. */
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FileInputProc, /* Input proc. */
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FileOutputProc, /* Output proc. */
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FileSeekProc, /* Seek proc. */
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NULL, /* Set option proc. */
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NULL, /* Get option proc. */
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FileWatchProc, /* Set up the notifier to watch the channel. */
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FileGetHandleProc, /* Get an OS handle from channel. */
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NULL, /* close2proc. */
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FileBlockProc, /* Set blocking or non-blocking mode.*/
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NULL, /* flush proc. */
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NULL, /* handler proc. */
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FileWideSeekProc, /* Wide seek proc. */
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FileThreadActionProc, /* Thread action proc. */
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};
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#ifdef HAVE_NO_SEH
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/*
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* Unlike Borland and Microsoft, we don't register exception handlers
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|
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* by pushing registration records onto the runtime stack. Instead, we
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* register them by creating an EXCEPTION_REGISTRATION within the activation
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* record.
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135 |
*/
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typedef struct EXCEPTION_REGISTRATION {
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struct EXCEPTION_REGISTRATION* link;
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EXCEPTION_DISPOSITION (*handler)( struct _EXCEPTION_RECORD*, void*,
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struct _CONTEXT*, void* );
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|
141 |
void* ebp;
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|
142 |
void* esp;
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|
143 |
int status;
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|
144 |
} EXCEPTION_REGISTRATION;
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|
145 |
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146 |
#endif
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147 |
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148 |
/*
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149 |
*----------------------------------------------------------------------
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150 |
*
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151 |
* FileInit --
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|
152 |
*
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|
153 |
* This function creates the window used to simulate file events.
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|
154 |
*
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|
155 |
* Results:
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|
156 |
* None.
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|
157 |
*
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158 |
* Side effects:
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159 |
* Creates a new window and creates an exit handler.
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160 |
*
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161 |
*----------------------------------------------------------------------
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162 |
*/
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163 |
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164 |
static ThreadSpecificData *
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FileInit()
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{
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|
167 |
ThreadSpecificData *tsdPtr =
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|
168 |
(ThreadSpecificData *)TclThreadDataKeyGet(&dataKey);
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|
169 |
if (tsdPtr == NULL) {
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170 |
tsdPtr = TCL_TSD_INIT(&dataKey);
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|
171 |
tsdPtr->firstFilePtr = NULL;
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|
172 |
Tcl_CreateEventSource(FileSetupProc, FileCheckProc, NULL);
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173 |
Tcl_CreateThreadExitHandler(FileChannelExitHandler, NULL);
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|
174 |
}
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|
175 |
return tsdPtr;
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|
176 |
}
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|
177 |
|
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|
178 |
/*
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|
179 |
*----------------------------------------------------------------------
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|
180 |
*
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|
181 |
* FileChannelExitHandler --
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|
182 |
*
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|
183 |
* This function is called to cleanup the channel driver before
|
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|
184 |
* Tcl is unloaded.
|
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|
185 |
*
|
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|
186 |
* Results:
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|
187 |
* None.
|
|
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|
188 |
*
|
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|
189 |
* Side effects:
|
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|
190 |
* Destroys the communication window.
|
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|
191 |
*
|
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|
192 |
*----------------------------------------------------------------------
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|
193 |
*/
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|
194 |
|
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|
195 |
static void
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|
196 |
FileChannelExitHandler(clientData)
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|
197 |
ClientData clientData; /* Old window proc */
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|
198 |
{
|
|
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|
199 |
Tcl_DeleteEventSource(FileSetupProc, FileCheckProc, NULL);
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|
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|
200 |
}
|
|
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|
201 |
|
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|
202 |
/*
|
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|
203 |
*----------------------------------------------------------------------
|
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|
204 |
*
|
|
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|
205 |
* FileSetupProc --
|
|
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|
206 |
*
|
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|
207 |
* This procedure is invoked before Tcl_DoOneEvent blocks waiting
|
|
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|
208 |
* for an event.
|
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|
209 |
*
|
|
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|
210 |
* Results:
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|
211 |
* None.
|
|
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|
212 |
*
|
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|
213 |
* Side effects:
|
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|
214 |
* Adjusts the block time if needed.
|
|
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|
215 |
*
|
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|
216 |
*----------------------------------------------------------------------
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|
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|
217 |
*/
|
|
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|
218 |
|
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|
219 |
void
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|
220 |
FileSetupProc(data, flags)
|
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|
221 |
ClientData data; /* Not used. */
|
|
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|
222 |
int flags; /* Event flags as passed to Tcl_DoOneEvent. */
|
|
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|
223 |
{
|
|
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|
224 |
FileInfo *infoPtr;
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|
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|
225 |
Tcl_Time blockTime = { 0, 0 };
|
|
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|
226 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
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|
227 |
|
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|
228 |
if (!(flags & TCL_FILE_EVENTS)) {
|
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|
229 |
return;
|
|
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|
230 |
}
|
|
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|
231 |
|
|
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|
232 |
/*
|
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|
233 |
* Check to see if there is a ready file. If so, poll.
|
|
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|
234 |
*/
|
|
sl@0
|
235 |
|
|
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|
236 |
for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
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|
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|
237 |
infoPtr = infoPtr->nextPtr) {
|
|
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|
238 |
if (infoPtr->watchMask) {
|
|
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|
239 |
Tcl_SetMaxBlockTime(&blockTime);
|
|
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|
240 |
break;
|
|
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|
241 |
}
|
|
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|
242 |
}
|
|
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|
243 |
}
|
|
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|
244 |
|
|
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|
245 |
/*
|
|
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|
246 |
*----------------------------------------------------------------------
|
|
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|
247 |
*
|
|
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|
248 |
* FileCheckProc --
|
|
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|
249 |
*
|
|
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|
250 |
* This procedure is called by Tcl_DoOneEvent to check the file
|
|
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|
251 |
* event source for events.
|
|
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|
252 |
*
|
|
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|
253 |
* Results:
|
|
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|
254 |
* None.
|
|
sl@0
|
255 |
*
|
|
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|
256 |
* Side effects:
|
|
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|
257 |
* May queue an event.
|
|
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|
258 |
*
|
|
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|
259 |
*----------------------------------------------------------------------
|
|
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|
260 |
*/
|
|
sl@0
|
261 |
|
|
sl@0
|
262 |
static void
|
|
sl@0
|
263 |
FileCheckProc(data, flags)
|
|
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|
264 |
ClientData data; /* Not used. */
|
|
sl@0
|
265 |
int flags; /* Event flags as passed to Tcl_DoOneEvent. */
|
|
sl@0
|
266 |
{
|
|
sl@0
|
267 |
FileEvent *evPtr;
|
|
sl@0
|
268 |
FileInfo *infoPtr;
|
|
sl@0
|
269 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
270 |
|
|
sl@0
|
271 |
if (!(flags & TCL_FILE_EVENTS)) {
|
|
sl@0
|
272 |
return;
|
|
sl@0
|
273 |
}
|
|
sl@0
|
274 |
|
|
sl@0
|
275 |
/*
|
|
sl@0
|
276 |
* Queue events for any ready files that don't already have events
|
|
sl@0
|
277 |
* queued (caused by persistent states that won't generate WinSock
|
|
sl@0
|
278 |
* events).
|
|
sl@0
|
279 |
*/
|
|
sl@0
|
280 |
|
|
sl@0
|
281 |
for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
|
|
sl@0
|
282 |
infoPtr = infoPtr->nextPtr) {
|
|
sl@0
|
283 |
if (infoPtr->watchMask && !(infoPtr->flags & FILE_PENDING)) {
|
|
sl@0
|
284 |
infoPtr->flags |= FILE_PENDING;
|
|
sl@0
|
285 |
evPtr = (FileEvent *) ckalloc(sizeof(FileEvent));
|
|
sl@0
|
286 |
evPtr->header.proc = FileEventProc;
|
|
sl@0
|
287 |
evPtr->infoPtr = infoPtr;
|
|
sl@0
|
288 |
Tcl_QueueEvent((Tcl_Event *) evPtr, TCL_QUEUE_TAIL);
|
|
sl@0
|
289 |
}
|
|
sl@0
|
290 |
}
|
|
sl@0
|
291 |
}
|
|
sl@0
|
292 |
|
|
sl@0
|
293 |
/*----------------------------------------------------------------------
|
|
sl@0
|
294 |
*
|
|
sl@0
|
295 |
* FileEventProc --
|
|
sl@0
|
296 |
*
|
|
sl@0
|
297 |
* This function is invoked by Tcl_ServiceEvent when a file event
|
|
sl@0
|
298 |
* reaches the front of the event queue. This procedure invokes
|
|
sl@0
|
299 |
* Tcl_NotifyChannel on the file.
|
|
sl@0
|
300 |
*
|
|
sl@0
|
301 |
* Results:
|
|
sl@0
|
302 |
* Returns 1 if the event was handled, meaning it should be removed
|
|
sl@0
|
303 |
* from the queue. Returns 0 if the event was not handled, meaning
|
|
sl@0
|
304 |
* it should stay on the queue. The only time the event isn't
|
|
sl@0
|
305 |
* handled is if the TCL_FILE_EVENTS flag bit isn't set.
|
|
sl@0
|
306 |
*
|
|
sl@0
|
307 |
* Side effects:
|
|
sl@0
|
308 |
* Whatever the notifier callback does.
|
|
sl@0
|
309 |
*
|
|
sl@0
|
310 |
*----------------------------------------------------------------------
|
|
sl@0
|
311 |
*/
|
|
sl@0
|
312 |
|
|
sl@0
|
313 |
static int
|
|
sl@0
|
314 |
FileEventProc(evPtr, flags)
|
|
sl@0
|
315 |
Tcl_Event *evPtr; /* Event to service. */
|
|
sl@0
|
316 |
int flags; /* Flags that indicate what events to
|
|
sl@0
|
317 |
* handle, such as TCL_FILE_EVENTS. */
|
|
sl@0
|
318 |
{
|
|
sl@0
|
319 |
FileEvent *fileEvPtr = (FileEvent *)evPtr;
|
|
sl@0
|
320 |
FileInfo *infoPtr;
|
|
sl@0
|
321 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
322 |
|
|
sl@0
|
323 |
if (!(flags & TCL_FILE_EVENTS)) {
|
|
sl@0
|
324 |
return 0;
|
|
sl@0
|
325 |
}
|
|
sl@0
|
326 |
|
|
sl@0
|
327 |
/*
|
|
sl@0
|
328 |
* Search through the list of watched files for the one whose handle
|
|
sl@0
|
329 |
* matches the event. We do this rather than simply dereferencing
|
|
sl@0
|
330 |
* the handle in the event so that files can be deleted while the
|
|
sl@0
|
331 |
* event is in the queue.
|
|
sl@0
|
332 |
*/
|
|
sl@0
|
333 |
|
|
sl@0
|
334 |
for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
|
|
sl@0
|
335 |
infoPtr = infoPtr->nextPtr) {
|
|
sl@0
|
336 |
if (fileEvPtr->infoPtr == infoPtr) {
|
|
sl@0
|
337 |
infoPtr->flags &= ~(FILE_PENDING);
|
|
sl@0
|
338 |
Tcl_NotifyChannel(infoPtr->channel, infoPtr->watchMask);
|
|
sl@0
|
339 |
break;
|
|
sl@0
|
340 |
}
|
|
sl@0
|
341 |
}
|
|
sl@0
|
342 |
return 1;
|
|
sl@0
|
343 |
}
|
|
sl@0
|
344 |
|
|
sl@0
|
345 |
/*
|
|
sl@0
|
346 |
*----------------------------------------------------------------------
|
|
sl@0
|
347 |
*
|
|
sl@0
|
348 |
* FileBlockProc --
|
|
sl@0
|
349 |
*
|
|
sl@0
|
350 |
* Set blocking or non-blocking mode on channel.
|
|
sl@0
|
351 |
*
|
|
sl@0
|
352 |
* Results:
|
|
sl@0
|
353 |
* 0 if successful, errno when failed.
|
|
sl@0
|
354 |
*
|
|
sl@0
|
355 |
* Side effects:
|
|
sl@0
|
356 |
* Sets the device into blocking or non-blocking mode.
|
|
sl@0
|
357 |
*
|
|
sl@0
|
358 |
*----------------------------------------------------------------------
|
|
sl@0
|
359 |
*/
|
|
sl@0
|
360 |
|
|
sl@0
|
361 |
static int
|
|
sl@0
|
362 |
FileBlockProc(instanceData, mode)
|
|
sl@0
|
363 |
ClientData instanceData; /* Instance data for channel. */
|
|
sl@0
|
364 |
int mode; /* TCL_MODE_BLOCKING or
|
|
sl@0
|
365 |
* TCL_MODE_NONBLOCKING. */
|
|
sl@0
|
366 |
{
|
|
sl@0
|
367 |
FileInfo *infoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
368 |
|
|
sl@0
|
369 |
/*
|
|
sl@0
|
370 |
* Files on Windows can not be switched between blocking and nonblocking,
|
|
sl@0
|
371 |
* hence we have to emulate the behavior. This is done in the input
|
|
sl@0
|
372 |
* function by checking against a bit in the state. We set or unset the
|
|
sl@0
|
373 |
* bit here to cause the input function to emulate the correct behavior.
|
|
sl@0
|
374 |
*/
|
|
sl@0
|
375 |
|
|
sl@0
|
376 |
if (mode == TCL_MODE_NONBLOCKING) {
|
|
sl@0
|
377 |
infoPtr->flags |= FILE_ASYNC;
|
|
sl@0
|
378 |
} else {
|
|
sl@0
|
379 |
infoPtr->flags &= ~(FILE_ASYNC);
|
|
sl@0
|
380 |
}
|
|
sl@0
|
381 |
return 0;
|
|
sl@0
|
382 |
}
|
|
sl@0
|
383 |
|
|
sl@0
|
384 |
/*
|
|
sl@0
|
385 |
*----------------------------------------------------------------------
|
|
sl@0
|
386 |
*
|
|
sl@0
|
387 |
* FileCloseProc --
|
|
sl@0
|
388 |
*
|
|
sl@0
|
389 |
* Closes the IO channel.
|
|
sl@0
|
390 |
*
|
|
sl@0
|
391 |
* Results:
|
|
sl@0
|
392 |
* 0 if successful, the value of errno if failed.
|
|
sl@0
|
393 |
*
|
|
sl@0
|
394 |
* Side effects:
|
|
sl@0
|
395 |
* Closes the physical channel
|
|
sl@0
|
396 |
*
|
|
sl@0
|
397 |
*----------------------------------------------------------------------
|
|
sl@0
|
398 |
*/
|
|
sl@0
|
399 |
|
|
sl@0
|
400 |
static int
|
|
sl@0
|
401 |
FileCloseProc(instanceData, interp)
|
|
sl@0
|
402 |
ClientData instanceData; /* Pointer to FileInfo structure. */
|
|
sl@0
|
403 |
Tcl_Interp *interp; /* Not used. */
|
|
sl@0
|
404 |
{
|
|
sl@0
|
405 |
FileInfo *fileInfoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
406 |
FileInfo *infoPtr;
|
|
sl@0
|
407 |
ThreadSpecificData *tsdPtr;
|
|
sl@0
|
408 |
int errorCode = 0;
|
|
sl@0
|
409 |
|
|
sl@0
|
410 |
/*
|
|
sl@0
|
411 |
* Remove the file from the watch list.
|
|
sl@0
|
412 |
*/
|
|
sl@0
|
413 |
|
|
sl@0
|
414 |
FileWatchProc(instanceData, 0);
|
|
sl@0
|
415 |
|
|
sl@0
|
416 |
/*
|
|
sl@0
|
417 |
* Don't close the Win32 handle if the handle is a standard channel
|
|
sl@0
|
418 |
* during the thread exit process. Otherwise, one thread may kill
|
|
sl@0
|
419 |
* the stdio of another.
|
|
sl@0
|
420 |
*/
|
|
sl@0
|
421 |
|
|
sl@0
|
422 |
if (!TclInThreadExit()
|
|
sl@0
|
423 |
|| ((GetStdHandle(STD_INPUT_HANDLE) != fileInfoPtr->handle)
|
|
sl@0
|
424 |
&& (GetStdHandle(STD_OUTPUT_HANDLE) != fileInfoPtr->handle)
|
|
sl@0
|
425 |
&& (GetStdHandle(STD_ERROR_HANDLE) != fileInfoPtr->handle))) {
|
|
sl@0
|
426 |
if (CloseHandle(fileInfoPtr->handle) == FALSE) {
|
|
sl@0
|
427 |
TclWinConvertError(GetLastError());
|
|
sl@0
|
428 |
errorCode = errno;
|
|
sl@0
|
429 |
}
|
|
sl@0
|
430 |
}
|
|
sl@0
|
431 |
|
|
sl@0
|
432 |
/*
|
|
sl@0
|
433 |
* See if this FileInfo* is still on the thread local list.
|
|
sl@0
|
434 |
*/
|
|
sl@0
|
435 |
tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
436 |
for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
|
|
sl@0
|
437 |
infoPtr = infoPtr->nextPtr) {
|
|
sl@0
|
438 |
if (infoPtr == fileInfoPtr) {
|
|
sl@0
|
439 |
/*
|
|
sl@0
|
440 |
* This channel exists on the thread local list. It should
|
|
sl@0
|
441 |
* have been removed by an earlier Thread Action call,
|
|
sl@0
|
442 |
* but do that now since just deallocating fileInfoPtr would
|
|
sl@0
|
443 |
* leave an deallocated pointer on the thread local list.
|
|
sl@0
|
444 |
*/
|
|
sl@0
|
445 |
FileThreadActionProc(fileInfoPtr,TCL_CHANNEL_THREAD_REMOVE);
|
|
sl@0
|
446 |
break;
|
|
sl@0
|
447 |
}
|
|
sl@0
|
448 |
}
|
|
sl@0
|
449 |
ckfree((char *)fileInfoPtr);
|
|
sl@0
|
450 |
return errorCode;
|
|
sl@0
|
451 |
}
|
|
sl@0
|
452 |
|
|
sl@0
|
453 |
/*
|
|
sl@0
|
454 |
*----------------------------------------------------------------------
|
|
sl@0
|
455 |
*
|
|
sl@0
|
456 |
* FileSeekProc --
|
|
sl@0
|
457 |
*
|
|
sl@0
|
458 |
* Seeks on a file-based channel. Returns the new position.
|
|
sl@0
|
459 |
*
|
|
sl@0
|
460 |
* Results:
|
|
sl@0
|
461 |
* -1 if failed, the new position if successful. If failed, it
|
|
sl@0
|
462 |
* also sets *errorCodePtr to the error code.
|
|
sl@0
|
463 |
*
|
|
sl@0
|
464 |
* Side effects:
|
|
sl@0
|
465 |
* Moves the location at which the channel will be accessed in
|
|
sl@0
|
466 |
* future operations.
|
|
sl@0
|
467 |
*
|
|
sl@0
|
468 |
*----------------------------------------------------------------------
|
|
sl@0
|
469 |
*/
|
|
sl@0
|
470 |
|
|
sl@0
|
471 |
static int
|
|
sl@0
|
472 |
FileSeekProc(instanceData, offset, mode, errorCodePtr)
|
|
sl@0
|
473 |
ClientData instanceData; /* File state. */
|
|
sl@0
|
474 |
long offset; /* Offset to seek to. */
|
|
sl@0
|
475 |
int mode; /* Relative to where should we seek? */
|
|
sl@0
|
476 |
int *errorCodePtr; /* To store error code. */
|
|
sl@0
|
477 |
{
|
|
sl@0
|
478 |
FileInfo *infoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
479 |
DWORD moveMethod;
|
|
sl@0
|
480 |
DWORD newPos, newPosHigh;
|
|
sl@0
|
481 |
DWORD oldPos, oldPosHigh;
|
|
sl@0
|
482 |
|
|
sl@0
|
483 |
*errorCodePtr = 0;
|
|
sl@0
|
484 |
if (mode == SEEK_SET) {
|
|
sl@0
|
485 |
moveMethod = FILE_BEGIN;
|
|
sl@0
|
486 |
} else if (mode == SEEK_CUR) {
|
|
sl@0
|
487 |
moveMethod = FILE_CURRENT;
|
|
sl@0
|
488 |
} else {
|
|
sl@0
|
489 |
moveMethod = FILE_END;
|
|
sl@0
|
490 |
}
|
|
sl@0
|
491 |
|
|
sl@0
|
492 |
/*
|
|
sl@0
|
493 |
* Save our current place in case we need to roll-back the seek.
|
|
sl@0
|
494 |
*/
|
|
sl@0
|
495 |
oldPosHigh = (DWORD)0;
|
|
sl@0
|
496 |
oldPos = SetFilePointer(infoPtr->handle, (LONG)0, &oldPosHigh,
|
|
sl@0
|
497 |
FILE_CURRENT);
|
|
sl@0
|
498 |
if (oldPos == INVALID_SET_FILE_POINTER) {
|
|
sl@0
|
499 |
DWORD winError = GetLastError();
|
|
sl@0
|
500 |
if (winError != NO_ERROR) {
|
|
sl@0
|
501 |
TclWinConvertError(winError);
|
|
sl@0
|
502 |
*errorCodePtr = errno;
|
|
sl@0
|
503 |
return -1;
|
|
sl@0
|
504 |
}
|
|
sl@0
|
505 |
}
|
|
sl@0
|
506 |
|
|
sl@0
|
507 |
newPosHigh = (DWORD)(offset < 0 ? -1 : 0);
|
|
sl@0
|
508 |
newPos = SetFilePointer(infoPtr->handle, (LONG) offset, &newPosHigh,
|
|
sl@0
|
509 |
moveMethod);
|
|
sl@0
|
510 |
if (newPos == INVALID_SET_FILE_POINTER) {
|
|
sl@0
|
511 |
DWORD winError = GetLastError();
|
|
sl@0
|
512 |
if (winError != NO_ERROR) {
|
|
sl@0
|
513 |
TclWinConvertError(winError);
|
|
sl@0
|
514 |
*errorCodePtr = errno;
|
|
sl@0
|
515 |
return -1;
|
|
sl@0
|
516 |
}
|
|
sl@0
|
517 |
}
|
|
sl@0
|
518 |
|
|
sl@0
|
519 |
/*
|
|
sl@0
|
520 |
* Check for expressability in our return type, and roll-back otherwise.
|
|
sl@0
|
521 |
*/
|
|
sl@0
|
522 |
if (newPosHigh != 0) {
|
|
sl@0
|
523 |
*errorCodePtr = EOVERFLOW;
|
|
sl@0
|
524 |
SetFilePointer(infoPtr->handle, (LONG)oldPos, &oldPosHigh, FILE_BEGIN);
|
|
sl@0
|
525 |
return -1;
|
|
sl@0
|
526 |
}
|
|
sl@0
|
527 |
return (int) newPos;
|
|
sl@0
|
528 |
}
|
|
sl@0
|
529 |
|
|
sl@0
|
530 |
/*
|
|
sl@0
|
531 |
*----------------------------------------------------------------------
|
|
sl@0
|
532 |
*
|
|
sl@0
|
533 |
* FileWideSeekProc --
|
|
sl@0
|
534 |
*
|
|
sl@0
|
535 |
* Seeks on a file-based channel. Returns the new position.
|
|
sl@0
|
536 |
*
|
|
sl@0
|
537 |
* Results:
|
|
sl@0
|
538 |
* -1 if failed, the new position if successful. If failed, it
|
|
sl@0
|
539 |
* also sets *errorCodePtr to the error code.
|
|
sl@0
|
540 |
*
|
|
sl@0
|
541 |
* Side effects:
|
|
sl@0
|
542 |
* Moves the location at which the channel will be accessed in
|
|
sl@0
|
543 |
* future operations.
|
|
sl@0
|
544 |
*
|
|
sl@0
|
545 |
*----------------------------------------------------------------------
|
|
sl@0
|
546 |
*/
|
|
sl@0
|
547 |
|
|
sl@0
|
548 |
static Tcl_WideInt
|
|
sl@0
|
549 |
FileWideSeekProc(instanceData, offset, mode, errorCodePtr)
|
|
sl@0
|
550 |
ClientData instanceData; /* File state. */
|
|
sl@0
|
551 |
Tcl_WideInt offset; /* Offset to seek to. */
|
|
sl@0
|
552 |
int mode; /* Relative to where should we seek? */
|
|
sl@0
|
553 |
int *errorCodePtr; /* To store error code. */
|
|
sl@0
|
554 |
{
|
|
sl@0
|
555 |
FileInfo *infoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
556 |
DWORD moveMethod;
|
|
sl@0
|
557 |
DWORD newPos, newPosHigh;
|
|
sl@0
|
558 |
|
|
sl@0
|
559 |
*errorCodePtr = 0;
|
|
sl@0
|
560 |
if (mode == SEEK_SET) {
|
|
sl@0
|
561 |
moveMethod = FILE_BEGIN;
|
|
sl@0
|
562 |
} else if (mode == SEEK_CUR) {
|
|
sl@0
|
563 |
moveMethod = FILE_CURRENT;
|
|
sl@0
|
564 |
} else {
|
|
sl@0
|
565 |
moveMethod = FILE_END;
|
|
sl@0
|
566 |
}
|
|
sl@0
|
567 |
|
|
sl@0
|
568 |
newPosHigh = (DWORD)(offset >> 32);
|
|
sl@0
|
569 |
newPos = SetFilePointer(infoPtr->handle, (LONG) offset, &newPosHigh,
|
|
sl@0
|
570 |
moveMethod);
|
|
sl@0
|
571 |
if (newPos == INVALID_SET_FILE_POINTER) {
|
|
sl@0
|
572 |
DWORD winError = GetLastError();
|
|
sl@0
|
573 |
if (winError != NO_ERROR) {
|
|
sl@0
|
574 |
TclWinConvertError(winError);
|
|
sl@0
|
575 |
*errorCodePtr = errno;
|
|
sl@0
|
576 |
return -1;
|
|
sl@0
|
577 |
}
|
|
sl@0
|
578 |
}
|
|
sl@0
|
579 |
return ((Tcl_WideInt) newPos) | (((Tcl_WideInt) newPosHigh) << 32);
|
|
sl@0
|
580 |
}
|
|
sl@0
|
581 |
|
|
sl@0
|
582 |
/*
|
|
sl@0
|
583 |
*----------------------------------------------------------------------
|
|
sl@0
|
584 |
*
|
|
sl@0
|
585 |
* FileInputProc --
|
|
sl@0
|
586 |
*
|
|
sl@0
|
587 |
* Reads input from the IO channel into the buffer given. Returns
|
|
sl@0
|
588 |
* count of how many bytes were actually read, and an error indication.
|
|
sl@0
|
589 |
*
|
|
sl@0
|
590 |
* Results:
|
|
sl@0
|
591 |
* A count of how many bytes were read is returned and an error
|
|
sl@0
|
592 |
* indication is returned in an output argument.
|
|
sl@0
|
593 |
*
|
|
sl@0
|
594 |
* Side effects:
|
|
sl@0
|
595 |
* Reads input from the actual channel.
|
|
sl@0
|
596 |
*
|
|
sl@0
|
597 |
*----------------------------------------------------------------------
|
|
sl@0
|
598 |
*/
|
|
sl@0
|
599 |
|
|
sl@0
|
600 |
static int
|
|
sl@0
|
601 |
FileInputProc(instanceData, buf, bufSize, errorCode)
|
|
sl@0
|
602 |
ClientData instanceData; /* File state. */
|
|
sl@0
|
603 |
char *buf; /* Where to store data read. */
|
|
sl@0
|
604 |
int bufSize; /* How much space is available
|
|
sl@0
|
605 |
* in the buffer? */
|
|
sl@0
|
606 |
int *errorCode; /* Where to store error code. */
|
|
sl@0
|
607 |
{
|
|
sl@0
|
608 |
FileInfo *infoPtr;
|
|
sl@0
|
609 |
DWORD bytesRead;
|
|
sl@0
|
610 |
|
|
sl@0
|
611 |
*errorCode = 0;
|
|
sl@0
|
612 |
infoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
613 |
|
|
sl@0
|
614 |
/*
|
|
sl@0
|
615 |
* Note that we will block on reads from a console buffer until a
|
|
sl@0
|
616 |
* full line has been entered. The only way I know of to get
|
|
sl@0
|
617 |
* around this is to write a console driver. We should probably
|
|
sl@0
|
618 |
* do this at some point, but for now, we just block. The same
|
|
sl@0
|
619 |
* problem exists for files being read over the network.
|
|
sl@0
|
620 |
*/
|
|
sl@0
|
621 |
|
|
sl@0
|
622 |
if (ReadFile(infoPtr->handle, (LPVOID) buf, (DWORD) bufSize, &bytesRead,
|
|
sl@0
|
623 |
(LPOVERLAPPED) NULL) != FALSE) {
|
|
sl@0
|
624 |
return bytesRead;
|
|
sl@0
|
625 |
}
|
|
sl@0
|
626 |
|
|
sl@0
|
627 |
TclWinConvertError(GetLastError());
|
|
sl@0
|
628 |
*errorCode = errno;
|
|
sl@0
|
629 |
if (errno == EPIPE) {
|
|
sl@0
|
630 |
return 0;
|
|
sl@0
|
631 |
}
|
|
sl@0
|
632 |
return -1;
|
|
sl@0
|
633 |
}
|
|
sl@0
|
634 |
|
|
sl@0
|
635 |
/*
|
|
sl@0
|
636 |
*----------------------------------------------------------------------
|
|
sl@0
|
637 |
*
|
|
sl@0
|
638 |
* FileOutputProc --
|
|
sl@0
|
639 |
*
|
|
sl@0
|
640 |
* Writes the given output on the IO channel. Returns count of how
|
|
sl@0
|
641 |
* many characters were actually written, and an error indication.
|
|
sl@0
|
642 |
*
|
|
sl@0
|
643 |
* Results:
|
|
sl@0
|
644 |
* A count of how many characters were written is returned and an
|
|
sl@0
|
645 |
* error indication is returned in an output argument.
|
|
sl@0
|
646 |
*
|
|
sl@0
|
647 |
* Side effects:
|
|
sl@0
|
648 |
* Writes output on the actual channel.
|
|
sl@0
|
649 |
*
|
|
sl@0
|
650 |
*----------------------------------------------------------------------
|
|
sl@0
|
651 |
*/
|
|
sl@0
|
652 |
|
|
sl@0
|
653 |
static int
|
|
sl@0
|
654 |
FileOutputProc(instanceData, buf, toWrite, errorCode)
|
|
sl@0
|
655 |
ClientData instanceData; /* File state. */
|
|
sl@0
|
656 |
CONST char *buf; /* The data buffer. */
|
|
sl@0
|
657 |
int toWrite; /* How many bytes to write? */
|
|
sl@0
|
658 |
int *errorCode; /* Where to store error code. */
|
|
sl@0
|
659 |
{
|
|
sl@0
|
660 |
FileInfo *infoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
661 |
DWORD bytesWritten;
|
|
sl@0
|
662 |
|
|
sl@0
|
663 |
*errorCode = 0;
|
|
sl@0
|
664 |
|
|
sl@0
|
665 |
/*
|
|
sl@0
|
666 |
* If we are writing to a file that was opened with O_APPEND, we need to
|
|
sl@0
|
667 |
* seek to the end of the file before writing the current buffer.
|
|
sl@0
|
668 |
*/
|
|
sl@0
|
669 |
|
|
sl@0
|
670 |
if (infoPtr->flags & FILE_APPEND) {
|
|
sl@0
|
671 |
SetFilePointer(infoPtr->handle, 0, NULL, FILE_END);
|
|
sl@0
|
672 |
}
|
|
sl@0
|
673 |
|
|
sl@0
|
674 |
if (WriteFile(infoPtr->handle, (LPVOID) buf, (DWORD) toWrite, &bytesWritten,
|
|
sl@0
|
675 |
(LPOVERLAPPED) NULL) == FALSE) {
|
|
sl@0
|
676 |
TclWinConvertError(GetLastError());
|
|
sl@0
|
677 |
*errorCode = errno;
|
|
sl@0
|
678 |
return -1;
|
|
sl@0
|
679 |
}
|
|
sl@0
|
680 |
infoPtr->dirty = 1;
|
|
sl@0
|
681 |
return bytesWritten;
|
|
sl@0
|
682 |
}
|
|
sl@0
|
683 |
|
|
sl@0
|
684 |
/*
|
|
sl@0
|
685 |
*----------------------------------------------------------------------
|
|
sl@0
|
686 |
*
|
|
sl@0
|
687 |
* FileWatchProc --
|
|
sl@0
|
688 |
*
|
|
sl@0
|
689 |
* Called by the notifier to set up to watch for events on this
|
|
sl@0
|
690 |
* channel.
|
|
sl@0
|
691 |
*
|
|
sl@0
|
692 |
* Results:
|
|
sl@0
|
693 |
* None.
|
|
sl@0
|
694 |
*
|
|
sl@0
|
695 |
* Side effects:
|
|
sl@0
|
696 |
* None.
|
|
sl@0
|
697 |
*
|
|
sl@0
|
698 |
*----------------------------------------------------------------------
|
|
sl@0
|
699 |
*/
|
|
sl@0
|
700 |
|
|
sl@0
|
701 |
static void
|
|
sl@0
|
702 |
FileWatchProc(instanceData, mask)
|
|
sl@0
|
703 |
ClientData instanceData; /* File state. */
|
|
sl@0
|
704 |
int mask; /* What events to watch for; OR-ed
|
|
sl@0
|
705 |
* combination of TCL_READABLE,
|
|
sl@0
|
706 |
* TCL_WRITABLE and TCL_EXCEPTION. */
|
|
sl@0
|
707 |
{
|
|
sl@0
|
708 |
FileInfo *infoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
709 |
Tcl_Time blockTime = { 0, 0 };
|
|
sl@0
|
710 |
|
|
sl@0
|
711 |
/*
|
|
sl@0
|
712 |
* Since the file is always ready for events, we set the block time
|
|
sl@0
|
713 |
* to zero so we will poll.
|
|
sl@0
|
714 |
*/
|
|
sl@0
|
715 |
|
|
sl@0
|
716 |
infoPtr->watchMask = mask & infoPtr->validMask;
|
|
sl@0
|
717 |
if (infoPtr->watchMask) {
|
|
sl@0
|
718 |
Tcl_SetMaxBlockTime(&blockTime);
|
|
sl@0
|
719 |
}
|
|
sl@0
|
720 |
}
|
|
sl@0
|
721 |
|
|
sl@0
|
722 |
/*
|
|
sl@0
|
723 |
*----------------------------------------------------------------------
|
|
sl@0
|
724 |
*
|
|
sl@0
|
725 |
* FileGetHandleProc --
|
|
sl@0
|
726 |
*
|
|
sl@0
|
727 |
* Called from Tcl_GetChannelHandle to retrieve OS handles from
|
|
sl@0
|
728 |
* a file based channel.
|
|
sl@0
|
729 |
*
|
|
sl@0
|
730 |
* Results:
|
|
sl@0
|
731 |
* Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if
|
|
sl@0
|
732 |
* there is no handle for the specified direction.
|
|
sl@0
|
733 |
*
|
|
sl@0
|
734 |
* Side effects:
|
|
sl@0
|
735 |
* None.
|
|
sl@0
|
736 |
*
|
|
sl@0
|
737 |
*----------------------------------------------------------------------
|
|
sl@0
|
738 |
*/
|
|
sl@0
|
739 |
|
|
sl@0
|
740 |
static int
|
|
sl@0
|
741 |
FileGetHandleProc(instanceData, direction, handlePtr)
|
|
sl@0
|
742 |
ClientData instanceData; /* The file state. */
|
|
sl@0
|
743 |
int direction; /* TCL_READABLE or TCL_WRITABLE */
|
|
sl@0
|
744 |
ClientData *handlePtr; /* Where to store the handle. */
|
|
sl@0
|
745 |
{
|
|
sl@0
|
746 |
FileInfo *infoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
747 |
|
|
sl@0
|
748 |
if (direction & infoPtr->validMask) {
|
|
sl@0
|
749 |
*handlePtr = (ClientData) infoPtr->handle;
|
|
sl@0
|
750 |
return TCL_OK;
|
|
sl@0
|
751 |
} else {
|
|
sl@0
|
752 |
return TCL_ERROR;
|
|
sl@0
|
753 |
}
|
|
sl@0
|
754 |
}
|
|
sl@0
|
755 |
|
|
sl@0
|
756 |
|
|
sl@0
|
757 |
/*
|
|
sl@0
|
758 |
*----------------------------------------------------------------------
|
|
sl@0
|
759 |
*
|
|
sl@0
|
760 |
* TclpOpenFileChannel --
|
|
sl@0
|
761 |
*
|
|
sl@0
|
762 |
* Open an File based channel on Unix systems.
|
|
sl@0
|
763 |
*
|
|
sl@0
|
764 |
* Results:
|
|
sl@0
|
765 |
* The new channel or NULL. If NULL, the output argument
|
|
sl@0
|
766 |
* errorCodePtr is set to a POSIX error.
|
|
sl@0
|
767 |
*
|
|
sl@0
|
768 |
* Side effects:
|
|
sl@0
|
769 |
* May open the channel and may cause creation of a file on the
|
|
sl@0
|
770 |
* file system.
|
|
sl@0
|
771 |
*
|
|
sl@0
|
772 |
*----------------------------------------------------------------------
|
|
sl@0
|
773 |
*/
|
|
sl@0
|
774 |
|
|
sl@0
|
775 |
Tcl_Channel
|
|
sl@0
|
776 |
TclpOpenFileChannel(interp, pathPtr, mode, permissions)
|
|
sl@0
|
777 |
Tcl_Interp *interp; /* Interpreter for error reporting;
|
|
sl@0
|
778 |
* can be NULL. */
|
|
sl@0
|
779 |
Tcl_Obj *pathPtr; /* Name of file to open. */
|
|
sl@0
|
780 |
int mode; /* POSIX mode. */
|
|
sl@0
|
781 |
int permissions; /* If the open involves creating a
|
|
sl@0
|
782 |
* file, with what modes to create
|
|
sl@0
|
783 |
* it? */
|
|
sl@0
|
784 |
{
|
|
sl@0
|
785 |
Tcl_Channel channel = 0;
|
|
sl@0
|
786 |
int channelPermissions;
|
|
sl@0
|
787 |
DWORD accessMode, createMode, shareMode, flags;
|
|
sl@0
|
788 |
CONST TCHAR *nativeName;
|
|
sl@0
|
789 |
HANDLE handle;
|
|
sl@0
|
790 |
char channelName[16 + TCL_INTEGER_SPACE];
|
|
sl@0
|
791 |
TclFile readFile = NULL;
|
|
sl@0
|
792 |
TclFile writeFile = NULL;
|
|
sl@0
|
793 |
|
|
sl@0
|
794 |
nativeName = (TCHAR*) Tcl_FSGetNativePath(pathPtr);
|
|
sl@0
|
795 |
if (nativeName == NULL) {
|
|
sl@0
|
796 |
return NULL;
|
|
sl@0
|
797 |
}
|
|
sl@0
|
798 |
|
|
sl@0
|
799 |
switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) {
|
|
sl@0
|
800 |
case O_RDONLY:
|
|
sl@0
|
801 |
accessMode = GENERIC_READ;
|
|
sl@0
|
802 |
channelPermissions = TCL_READABLE;
|
|
sl@0
|
803 |
break;
|
|
sl@0
|
804 |
case O_WRONLY:
|
|
sl@0
|
805 |
accessMode = GENERIC_WRITE;
|
|
sl@0
|
806 |
channelPermissions = TCL_WRITABLE;
|
|
sl@0
|
807 |
break;
|
|
sl@0
|
808 |
case O_RDWR:
|
|
sl@0
|
809 |
accessMode = (GENERIC_READ | GENERIC_WRITE);
|
|
sl@0
|
810 |
channelPermissions = (TCL_READABLE | TCL_WRITABLE);
|
|
sl@0
|
811 |
break;
|
|
sl@0
|
812 |
default:
|
|
sl@0
|
813 |
panic("TclpOpenFileChannel: invalid mode value");
|
|
sl@0
|
814 |
break;
|
|
sl@0
|
815 |
}
|
|
sl@0
|
816 |
|
|
sl@0
|
817 |
/*
|
|
sl@0
|
818 |
* Map the creation flags to the NT create mode.
|
|
sl@0
|
819 |
*/
|
|
sl@0
|
820 |
|
|
sl@0
|
821 |
switch (mode & (O_CREAT | O_EXCL | O_TRUNC)) {
|
|
sl@0
|
822 |
case (O_CREAT | O_EXCL):
|
|
sl@0
|
823 |
case (O_CREAT | O_EXCL | O_TRUNC):
|
|
sl@0
|
824 |
createMode = CREATE_NEW;
|
|
sl@0
|
825 |
break;
|
|
sl@0
|
826 |
case (O_CREAT | O_TRUNC):
|
|
sl@0
|
827 |
createMode = CREATE_ALWAYS;
|
|
sl@0
|
828 |
break;
|
|
sl@0
|
829 |
case O_CREAT:
|
|
sl@0
|
830 |
createMode = OPEN_ALWAYS;
|
|
sl@0
|
831 |
break;
|
|
sl@0
|
832 |
case O_TRUNC:
|
|
sl@0
|
833 |
case (O_TRUNC | O_EXCL):
|
|
sl@0
|
834 |
createMode = TRUNCATE_EXISTING;
|
|
sl@0
|
835 |
break;
|
|
sl@0
|
836 |
default:
|
|
sl@0
|
837 |
createMode = OPEN_EXISTING;
|
|
sl@0
|
838 |
break;
|
|
sl@0
|
839 |
}
|
|
sl@0
|
840 |
|
|
sl@0
|
841 |
/*
|
|
sl@0
|
842 |
* If the file is being created, get the file attributes from the
|
|
sl@0
|
843 |
* permissions argument, else use the existing file attributes.
|
|
sl@0
|
844 |
*/
|
|
sl@0
|
845 |
|
|
sl@0
|
846 |
if (mode & O_CREAT) {
|
|
sl@0
|
847 |
if (permissions & S_IWRITE) {
|
|
sl@0
|
848 |
flags = FILE_ATTRIBUTE_NORMAL;
|
|
sl@0
|
849 |
} else {
|
|
sl@0
|
850 |
flags = FILE_ATTRIBUTE_READONLY;
|
|
sl@0
|
851 |
}
|
|
sl@0
|
852 |
} else {
|
|
sl@0
|
853 |
flags = (*tclWinProcs->getFileAttributesProc)(nativeName);
|
|
sl@0
|
854 |
if (flags == 0xFFFFFFFF) {
|
|
sl@0
|
855 |
flags = 0;
|
|
sl@0
|
856 |
}
|
|
sl@0
|
857 |
}
|
|
sl@0
|
858 |
|
|
sl@0
|
859 |
/*
|
|
sl@0
|
860 |
* Set up the file sharing mode. We want to allow simultaneous access.
|
|
sl@0
|
861 |
*/
|
|
sl@0
|
862 |
|
|
sl@0
|
863 |
shareMode = FILE_SHARE_READ | FILE_SHARE_WRITE;
|
|
sl@0
|
864 |
|
|
sl@0
|
865 |
/*
|
|
sl@0
|
866 |
* Now we get to create the file.
|
|
sl@0
|
867 |
*/
|
|
sl@0
|
868 |
|
|
sl@0
|
869 |
handle = (*tclWinProcs->createFileProc)(nativeName, accessMode,
|
|
sl@0
|
870 |
shareMode, NULL, createMode, flags, (HANDLE) NULL);
|
|
sl@0
|
871 |
|
|
sl@0
|
872 |
if (handle == INVALID_HANDLE_VALUE) {
|
|
sl@0
|
873 |
DWORD err;
|
|
sl@0
|
874 |
err = GetLastError();
|
|
sl@0
|
875 |
if ((err & 0xffffL) == ERROR_OPEN_FAILED) {
|
|
sl@0
|
876 |
err = (mode & O_CREAT) ? ERROR_FILE_EXISTS : ERROR_FILE_NOT_FOUND;
|
|
sl@0
|
877 |
}
|
|
sl@0
|
878 |
TclWinConvertError(err);
|
|
sl@0
|
879 |
if (interp != (Tcl_Interp *) NULL) {
|
|
sl@0
|
880 |
Tcl_AppendResult(interp, "couldn't open \"",
|
|
sl@0
|
881 |
Tcl_GetString(pathPtr), "\": ",
|
|
sl@0
|
882 |
Tcl_PosixError(interp), (char *) NULL);
|
|
sl@0
|
883 |
}
|
|
sl@0
|
884 |
return NULL;
|
|
sl@0
|
885 |
}
|
|
sl@0
|
886 |
|
|
sl@0
|
887 |
channel = NULL;
|
|
sl@0
|
888 |
|
|
sl@0
|
889 |
switch ( FileGetType(handle) ) {
|
|
sl@0
|
890 |
case FILE_TYPE_SERIAL:
|
|
sl@0
|
891 |
/*
|
|
sl@0
|
892 |
* Reopen channel for OVERLAPPED operation
|
|
sl@0
|
893 |
* Normally this shouldn't fail, because the channel exists
|
|
sl@0
|
894 |
*/
|
|
sl@0
|
895 |
handle = TclWinSerialReopen(handle, nativeName, accessMode);
|
|
sl@0
|
896 |
if (handle == INVALID_HANDLE_VALUE) {
|
|
sl@0
|
897 |
TclWinConvertError(GetLastError());
|
|
sl@0
|
898 |
if (interp != (Tcl_Interp *) NULL) {
|
|
sl@0
|
899 |
Tcl_AppendResult(interp, "couldn't reopen serial \"",
|
|
sl@0
|
900 |
Tcl_GetString(pathPtr), "\": ",
|
|
sl@0
|
901 |
Tcl_PosixError(interp), (char *) NULL);
|
|
sl@0
|
902 |
}
|
|
sl@0
|
903 |
return NULL;
|
|
sl@0
|
904 |
}
|
|
sl@0
|
905 |
channel = TclWinOpenSerialChannel(handle, channelName,
|
|
sl@0
|
906 |
channelPermissions);
|
|
sl@0
|
907 |
break;
|
|
sl@0
|
908 |
case FILE_TYPE_CONSOLE:
|
|
sl@0
|
909 |
channel = TclWinOpenConsoleChannel(handle, channelName,
|
|
sl@0
|
910 |
channelPermissions);
|
|
sl@0
|
911 |
break;
|
|
sl@0
|
912 |
case FILE_TYPE_PIPE:
|
|
sl@0
|
913 |
if (channelPermissions & TCL_READABLE) {
|
|
sl@0
|
914 |
readFile = TclWinMakeFile(handle);
|
|
sl@0
|
915 |
}
|
|
sl@0
|
916 |
if (channelPermissions & TCL_WRITABLE) {
|
|
sl@0
|
917 |
writeFile = TclWinMakeFile(handle);
|
|
sl@0
|
918 |
}
|
|
sl@0
|
919 |
channel = TclpCreateCommandChannel(readFile, writeFile, NULL, 0, NULL);
|
|
sl@0
|
920 |
break;
|
|
sl@0
|
921 |
case FILE_TYPE_CHAR:
|
|
sl@0
|
922 |
case FILE_TYPE_DISK:
|
|
sl@0
|
923 |
case FILE_TYPE_UNKNOWN:
|
|
sl@0
|
924 |
channel = TclWinOpenFileChannel(handle, channelName,
|
|
sl@0
|
925 |
channelPermissions,
|
|
sl@0
|
926 |
(mode & O_APPEND) ? FILE_APPEND : 0);
|
|
sl@0
|
927 |
break;
|
|
sl@0
|
928 |
|
|
sl@0
|
929 |
default:
|
|
sl@0
|
930 |
/*
|
|
sl@0
|
931 |
* The handle is of an unknown type, probably /dev/nul equivalent
|
|
sl@0
|
932 |
* or possibly a closed handle.
|
|
sl@0
|
933 |
*/
|
|
sl@0
|
934 |
|
|
sl@0
|
935 |
channel = NULL;
|
|
sl@0
|
936 |
Tcl_AppendResult(interp, "couldn't open \"",
|
|
sl@0
|
937 |
Tcl_GetString(pathPtr), "\": ",
|
|
sl@0
|
938 |
"bad file type", (char *) NULL);
|
|
sl@0
|
939 |
break;
|
|
sl@0
|
940 |
}
|
|
sl@0
|
941 |
|
|
sl@0
|
942 |
return channel;
|
|
sl@0
|
943 |
}
|
|
sl@0
|
944 |
|
|
sl@0
|
945 |
/*
|
|
sl@0
|
946 |
*----------------------------------------------------------------------
|
|
sl@0
|
947 |
*
|
|
sl@0
|
948 |
* Tcl_MakeFileChannel --
|
|
sl@0
|
949 |
*
|
|
sl@0
|
950 |
* Creates a Tcl_Channel from an existing platform specific file
|
|
sl@0
|
951 |
* handle.
|
|
sl@0
|
952 |
*
|
|
sl@0
|
953 |
* Results:
|
|
sl@0
|
954 |
* The Tcl_Channel created around the preexisting file.
|
|
sl@0
|
955 |
*
|
|
sl@0
|
956 |
* Side effects:
|
|
sl@0
|
957 |
* None.
|
|
sl@0
|
958 |
*
|
|
sl@0
|
959 |
*----------------------------------------------------------------------
|
|
sl@0
|
960 |
*/
|
|
sl@0
|
961 |
|
|
sl@0
|
962 |
Tcl_Channel
|
|
sl@0
|
963 |
Tcl_MakeFileChannel(rawHandle, mode)
|
|
sl@0
|
964 |
ClientData rawHandle; /* OS level handle */
|
|
sl@0
|
965 |
int mode; /* ORed combination of TCL_READABLE and
|
|
sl@0
|
966 |
* TCL_WRITABLE to indicate file mode. */
|
|
sl@0
|
967 |
{
|
|
sl@0
|
968 |
#ifdef HAVE_NO_SEH
|
|
sl@0
|
969 |
EXCEPTION_REGISTRATION registration;
|
|
sl@0
|
970 |
#endif
|
|
sl@0
|
971 |
char channelName[16 + TCL_INTEGER_SPACE];
|
|
sl@0
|
972 |
Tcl_Channel channel = NULL;
|
|
sl@0
|
973 |
HANDLE handle = (HANDLE) rawHandle;
|
|
sl@0
|
974 |
HANDLE dupedHandle;
|
|
sl@0
|
975 |
TclFile readFile = NULL;
|
|
sl@0
|
976 |
TclFile writeFile = NULL;
|
|
sl@0
|
977 |
BOOL result;
|
|
sl@0
|
978 |
|
|
sl@0
|
979 |
if (mode == 0) {
|
|
sl@0
|
980 |
return NULL;
|
|
sl@0
|
981 |
}
|
|
sl@0
|
982 |
|
|
sl@0
|
983 |
switch (FileGetType(handle))
|
|
sl@0
|
984 |
{
|
|
sl@0
|
985 |
case FILE_TYPE_SERIAL:
|
|
sl@0
|
986 |
channel = TclWinOpenSerialChannel(handle, channelName, mode);
|
|
sl@0
|
987 |
break;
|
|
sl@0
|
988 |
case FILE_TYPE_CONSOLE:
|
|
sl@0
|
989 |
channel = TclWinOpenConsoleChannel(handle, channelName, mode);
|
|
sl@0
|
990 |
break;
|
|
sl@0
|
991 |
case FILE_TYPE_PIPE:
|
|
sl@0
|
992 |
if (mode & TCL_READABLE)
|
|
sl@0
|
993 |
{
|
|
sl@0
|
994 |
readFile = TclWinMakeFile(handle);
|
|
sl@0
|
995 |
}
|
|
sl@0
|
996 |
if (mode & TCL_WRITABLE)
|
|
sl@0
|
997 |
{
|
|
sl@0
|
998 |
writeFile = TclWinMakeFile(handle);
|
|
sl@0
|
999 |
}
|
|
sl@0
|
1000 |
channel = TclpCreateCommandChannel(readFile, writeFile, NULL, 0, NULL);
|
|
sl@0
|
1001 |
break;
|
|
sl@0
|
1002 |
|
|
sl@0
|
1003 |
case FILE_TYPE_DISK:
|
|
sl@0
|
1004 |
case FILE_TYPE_CHAR:
|
|
sl@0
|
1005 |
channel = TclWinOpenFileChannel(handle, channelName, mode, 0);
|
|
sl@0
|
1006 |
break;
|
|
sl@0
|
1007 |
|
|
sl@0
|
1008 |
case FILE_TYPE_UNKNOWN:
|
|
sl@0
|
1009 |
default:
|
|
sl@0
|
1010 |
/*
|
|
sl@0
|
1011 |
* The handle is of an unknown type. Test the validity of this OS
|
|
sl@0
|
1012 |
* handle by duplicating it, then closing the dupe. The Win32 API
|
|
sl@0
|
1013 |
* doesn't provide an IsValidHandle() function, so we have to emulate
|
|
sl@0
|
1014 |
* it here. This test will not work on a console handle reliably,
|
|
sl@0
|
1015 |
* which is why we can't test every handle that comes into this
|
|
sl@0
|
1016 |
* function in this way.
|
|
sl@0
|
1017 |
*/
|
|
sl@0
|
1018 |
|
|
sl@0
|
1019 |
result = DuplicateHandle(GetCurrentProcess(), handle,
|
|
sl@0
|
1020 |
GetCurrentProcess(), &dupedHandle, 0, FALSE,
|
|
sl@0
|
1021 |
DUPLICATE_SAME_ACCESS);
|
|
sl@0
|
1022 |
|
|
sl@0
|
1023 |
if (result == 0) {
|
|
sl@0
|
1024 |
/*
|
|
sl@0
|
1025 |
* Unable to make a duplicate. It's definately invalid at this
|
|
sl@0
|
1026 |
* point.
|
|
sl@0
|
1027 |
*/
|
|
sl@0
|
1028 |
|
|
sl@0
|
1029 |
return NULL;
|
|
sl@0
|
1030 |
}
|
|
sl@0
|
1031 |
|
|
sl@0
|
1032 |
/*
|
|
sl@0
|
1033 |
* Use structured exception handling (Win32 SEH) to protect the close
|
|
sl@0
|
1034 |
* of this duped handle which might throw EXCEPTION_INVALID_HANDLE.
|
|
sl@0
|
1035 |
*/
|
|
sl@0
|
1036 |
|
|
sl@0
|
1037 |
result = 0;
|
|
sl@0
|
1038 |
#ifndef HAVE_NO_SEH
|
|
sl@0
|
1039 |
__try {
|
|
sl@0
|
1040 |
CloseHandle(dupedHandle);
|
|
sl@0
|
1041 |
result = 1;
|
|
sl@0
|
1042 |
} __except (EXCEPTION_EXECUTE_HANDLER) {}
|
|
sl@0
|
1043 |
#else
|
|
sl@0
|
1044 |
/*
|
|
sl@0
|
1045 |
* Don't have SEH available, do things the hard way.
|
|
sl@0
|
1046 |
* Note that this needs to be one block of asm, to avoid stack
|
|
sl@0
|
1047 |
* imbalance; also, it is illegal for one asm block to contain
|
|
sl@0
|
1048 |
* a jump to another.
|
|
sl@0
|
1049 |
*/
|
|
sl@0
|
1050 |
|
|
sl@0
|
1051 |
__asm__ __volatile__ (
|
|
sl@0
|
1052 |
|
|
sl@0
|
1053 |
/*
|
|
sl@0
|
1054 |
* Pick up parameters before messing with the stack
|
|
sl@0
|
1055 |
*/
|
|
sl@0
|
1056 |
|
|
sl@0
|
1057 |
"movl %[dupedHandle], %%ebx" "\n\t"
|
|
sl@0
|
1058 |
|
|
sl@0
|
1059 |
/*
|
|
sl@0
|
1060 |
* Construct an EXCEPTION_REGISTRATION to protect the
|
|
sl@0
|
1061 |
* call to CloseHandle
|
|
sl@0
|
1062 |
*/
|
|
sl@0
|
1063 |
"leal %[registration], %%edx" "\n\t"
|
|
sl@0
|
1064 |
"movl %%fs:0, %%eax" "\n\t"
|
|
sl@0
|
1065 |
"movl %%eax, 0x0(%%edx)" "\n\t" /* link */
|
|
sl@0
|
1066 |
"leal 1f, %%eax" "\n\t"
|
|
sl@0
|
1067 |
"movl %%eax, 0x4(%%edx)" "\n\t" /* handler */
|
|
sl@0
|
1068 |
"movl %%ebp, 0x8(%%edx)" "\n\t" /* ebp */
|
|
sl@0
|
1069 |
"movl %%esp, 0xc(%%edx)" "\n\t" /* esp */
|
|
sl@0
|
1070 |
"movl $0, 0x10(%%edx)" "\n\t" /* status */
|
|
sl@0
|
1071 |
|
|
sl@0
|
1072 |
/* Link the EXCEPTION_REGISTRATION on the chain */
|
|
sl@0
|
1073 |
|
|
sl@0
|
1074 |
"movl %%edx, %%fs:0" "\n\t"
|
|
sl@0
|
1075 |
|
|
sl@0
|
1076 |
/* Call CloseHandle( dupedHandle ) */
|
|
sl@0
|
1077 |
|
|
sl@0
|
1078 |
"pushl %%ebx" "\n\t"
|
|
sl@0
|
1079 |
"call _CloseHandle@4" "\n\t"
|
|
sl@0
|
1080 |
|
|
sl@0
|
1081 |
/*
|
|
sl@0
|
1082 |
* Come here on normal exit. Recover the EXCEPTION_REGISTRATION
|
|
sl@0
|
1083 |
* and put a TRUE status return into it.
|
|
sl@0
|
1084 |
*/
|
|
sl@0
|
1085 |
|
|
sl@0
|
1086 |
"movl %%fs:0, %%edx" "\n\t"
|
|
sl@0
|
1087 |
"movl $1, %%eax" "\n\t"
|
|
sl@0
|
1088 |
"movl %%eax, 0x10(%%edx)" "\n\t"
|
|
sl@0
|
1089 |
"jmp 2f" "\n"
|
|
sl@0
|
1090 |
|
|
sl@0
|
1091 |
/*
|
|
sl@0
|
1092 |
* Come here on an exception. Recover the EXCEPTION_REGISTRATION
|
|
sl@0
|
1093 |
*/
|
|
sl@0
|
1094 |
|
|
sl@0
|
1095 |
"1:" "\t"
|
|
sl@0
|
1096 |
"movl %%fs:0, %%edx" "\n\t"
|
|
sl@0
|
1097 |
"movl 0x8(%%edx), %%edx" "\n\t"
|
|
sl@0
|
1098 |
|
|
sl@0
|
1099 |
/*
|
|
sl@0
|
1100 |
* Come here however we exited. Restore context from the
|
|
sl@0
|
1101 |
* EXCEPTION_REGISTRATION in case the stack is unbalanced.
|
|
sl@0
|
1102 |
*/
|
|
sl@0
|
1103 |
|
|
sl@0
|
1104 |
"2:" "\t"
|
|
sl@0
|
1105 |
"movl 0xc(%%edx), %%esp" "\n\t"
|
|
sl@0
|
1106 |
"movl 0x8(%%edx), %%ebp" "\n\t"
|
|
sl@0
|
1107 |
"movl 0x0(%%edx), %%eax" "\n\t"
|
|
sl@0
|
1108 |
"movl %%eax, %%fs:0" "\n\t"
|
|
sl@0
|
1109 |
|
|
sl@0
|
1110 |
:
|
|
sl@0
|
1111 |
/* No outputs */
|
|
sl@0
|
1112 |
:
|
|
sl@0
|
1113 |
[registration] "m" (registration),
|
|
sl@0
|
1114 |
[dupedHandle] "m" (dupedHandle)
|
|
sl@0
|
1115 |
:
|
|
sl@0
|
1116 |
"%eax", "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory"
|
|
sl@0
|
1117 |
);
|
|
sl@0
|
1118 |
result = registration.status;
|
|
sl@0
|
1119 |
|
|
sl@0
|
1120 |
#endif
|
|
sl@0
|
1121 |
if (result == FALSE) {
|
|
sl@0
|
1122 |
return NULL;
|
|
sl@0
|
1123 |
}
|
|
sl@0
|
1124 |
|
|
sl@0
|
1125 |
/* Fall through, the handle is valid. */
|
|
sl@0
|
1126 |
|
|
sl@0
|
1127 |
/*
|
|
sl@0
|
1128 |
* Create the undefined channel, anyways, because we know the handle
|
|
sl@0
|
1129 |
* is valid to something.
|
|
sl@0
|
1130 |
*/
|
|
sl@0
|
1131 |
|
|
sl@0
|
1132 |
channel = TclWinOpenFileChannel(handle, channelName, mode, 0);
|
|
sl@0
|
1133 |
}
|
|
sl@0
|
1134 |
|
|
sl@0
|
1135 |
return channel;
|
|
sl@0
|
1136 |
}
|
|
sl@0
|
1137 |
|
|
sl@0
|
1138 |
/*
|
|
sl@0
|
1139 |
*----------------------------------------------------------------------
|
|
sl@0
|
1140 |
*
|
|
sl@0
|
1141 |
* TclpGetDefaultStdChannel --
|
|
sl@0
|
1142 |
*
|
|
sl@0
|
1143 |
* Constructs a channel for the specified standard OS handle.
|
|
sl@0
|
1144 |
*
|
|
sl@0
|
1145 |
* Results:
|
|
sl@0
|
1146 |
* Returns the specified default standard channel, or NULL.
|
|
sl@0
|
1147 |
*
|
|
sl@0
|
1148 |
* Side effects:
|
|
sl@0
|
1149 |
* May cause the creation of a standard channel and the underlying
|
|
sl@0
|
1150 |
* file.
|
|
sl@0
|
1151 |
*
|
|
sl@0
|
1152 |
*----------------------------------------------------------------------
|
|
sl@0
|
1153 |
*/
|
|
sl@0
|
1154 |
|
|
sl@0
|
1155 |
Tcl_Channel
|
|
sl@0
|
1156 |
TclpGetDefaultStdChannel(type)
|
|
sl@0
|
1157 |
int type; /* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */
|
|
sl@0
|
1158 |
{
|
|
sl@0
|
1159 |
Tcl_Channel channel;
|
|
sl@0
|
1160 |
HANDLE handle;
|
|
sl@0
|
1161 |
int mode;
|
|
sl@0
|
1162 |
char *bufMode;
|
|
sl@0
|
1163 |
DWORD handleId; /* Standard handle to retrieve. */
|
|
sl@0
|
1164 |
|
|
sl@0
|
1165 |
|
|
sl@0
|
1166 |
switch (type) {
|
|
sl@0
|
1167 |
case TCL_STDIN:
|
|
sl@0
|
1168 |
handleId = STD_INPUT_HANDLE;
|
|
sl@0
|
1169 |
mode = TCL_READABLE;
|
|
sl@0
|
1170 |
bufMode = "line";
|
|
sl@0
|
1171 |
break;
|
|
sl@0
|
1172 |
case TCL_STDOUT:
|
|
sl@0
|
1173 |
handleId = STD_OUTPUT_HANDLE;
|
|
sl@0
|
1174 |
mode = TCL_WRITABLE;
|
|
sl@0
|
1175 |
bufMode = "line";
|
|
sl@0
|
1176 |
break;
|
|
sl@0
|
1177 |
case TCL_STDERR:
|
|
sl@0
|
1178 |
handleId = STD_ERROR_HANDLE;
|
|
sl@0
|
1179 |
mode = TCL_WRITABLE;
|
|
sl@0
|
1180 |
bufMode = "none";
|
|
sl@0
|
1181 |
break;
|
|
sl@0
|
1182 |
default:
|
|
sl@0
|
1183 |
panic("TclGetDefaultStdChannel: Unexpected channel type");
|
|
sl@0
|
1184 |
break;
|
|
sl@0
|
1185 |
}
|
|
sl@0
|
1186 |
|
|
sl@0
|
1187 |
handle = GetStdHandle(handleId);
|
|
sl@0
|
1188 |
|
|
sl@0
|
1189 |
/*
|
|
sl@0
|
1190 |
* Note that we need to check for 0 because Windows may return 0 if this
|
|
sl@0
|
1191 |
* is not a console mode application, even though this is not a valid
|
|
sl@0
|
1192 |
* handle.
|
|
sl@0
|
1193 |
*/
|
|
sl@0
|
1194 |
|
|
sl@0
|
1195 |
if ((handle == INVALID_HANDLE_VALUE) || (handle == 0)) {
|
|
sl@0
|
1196 |
return (Tcl_Channel) NULL;
|
|
sl@0
|
1197 |
}
|
|
sl@0
|
1198 |
|
|
sl@0
|
1199 |
channel = Tcl_MakeFileChannel(handle, mode);
|
|
sl@0
|
1200 |
|
|
sl@0
|
1201 |
if (channel == NULL) {
|
|
sl@0
|
1202 |
return (Tcl_Channel) NULL;
|
|
sl@0
|
1203 |
}
|
|
sl@0
|
1204 |
|
|
sl@0
|
1205 |
/*
|
|
sl@0
|
1206 |
* Set up the normal channel options for stdio handles.
|
|
sl@0
|
1207 |
*/
|
|
sl@0
|
1208 |
|
|
sl@0
|
1209 |
if ((Tcl_SetChannelOption((Tcl_Interp *) NULL, channel, "-translation",
|
|
sl@0
|
1210 |
"auto") == TCL_ERROR)
|
|
sl@0
|
1211 |
|| (Tcl_SetChannelOption((Tcl_Interp *) NULL, channel, "-eofchar",
|
|
sl@0
|
1212 |
"\032 {}") == TCL_ERROR)
|
|
sl@0
|
1213 |
|| (Tcl_SetChannelOption((Tcl_Interp *) NULL, channel,
|
|
sl@0
|
1214 |
"-buffering", bufMode) == TCL_ERROR)) {
|
|
sl@0
|
1215 |
Tcl_Close((Tcl_Interp *) NULL, channel);
|
|
sl@0
|
1216 |
return (Tcl_Channel) NULL;
|
|
sl@0
|
1217 |
}
|
|
sl@0
|
1218 |
return channel;
|
|
sl@0
|
1219 |
}
|
|
sl@0
|
1220 |
|
|
sl@0
|
1221 |
|
|
sl@0
|
1222 |
|
|
sl@0
|
1223 |
/*
|
|
sl@0
|
1224 |
*----------------------------------------------------------------------
|
|
sl@0
|
1225 |
*
|
|
sl@0
|
1226 |
* TclWinOpenFileChannel --
|
|
sl@0
|
1227 |
*
|
|
sl@0
|
1228 |
* Constructs a File channel for the specified standard OS handle.
|
|
sl@0
|
1229 |
* This is a helper function to break up the construction of
|
|
sl@0
|
1230 |
* channels into File, Console, or Serial.
|
|
sl@0
|
1231 |
*
|
|
sl@0
|
1232 |
* Results:
|
|
sl@0
|
1233 |
* Returns the new channel, or NULL.
|
|
sl@0
|
1234 |
*
|
|
sl@0
|
1235 |
* Side effects:
|
|
sl@0
|
1236 |
* May open the channel and may cause creation of a file on the
|
|
sl@0
|
1237 |
* file system.
|
|
sl@0
|
1238 |
*
|
|
sl@0
|
1239 |
*----------------------------------------------------------------------
|
|
sl@0
|
1240 |
*/
|
|
sl@0
|
1241 |
|
|
sl@0
|
1242 |
Tcl_Channel
|
|
sl@0
|
1243 |
TclWinOpenFileChannel(handle, channelName, permissions, appendMode)
|
|
sl@0
|
1244 |
HANDLE handle;
|
|
sl@0
|
1245 |
char *channelName;
|
|
sl@0
|
1246 |
int permissions;
|
|
sl@0
|
1247 |
int appendMode;
|
|
sl@0
|
1248 |
{
|
|
sl@0
|
1249 |
FileInfo *infoPtr;
|
|
sl@0
|
1250 |
ThreadSpecificData *tsdPtr;
|
|
sl@0
|
1251 |
|
|
sl@0
|
1252 |
tsdPtr = FileInit();
|
|
sl@0
|
1253 |
|
|
sl@0
|
1254 |
/*
|
|
sl@0
|
1255 |
* See if a channel with this handle already exists.
|
|
sl@0
|
1256 |
*/
|
|
sl@0
|
1257 |
|
|
sl@0
|
1258 |
for (infoPtr = tsdPtr->firstFilePtr; infoPtr != NULL;
|
|
sl@0
|
1259 |
infoPtr = infoPtr->nextPtr) {
|
|
sl@0
|
1260 |
if (infoPtr->handle == (HANDLE) handle) {
|
|
sl@0
|
1261 |
return (permissions == infoPtr->validMask) ? infoPtr->channel : NULL;
|
|
sl@0
|
1262 |
}
|
|
sl@0
|
1263 |
}
|
|
sl@0
|
1264 |
|
|
sl@0
|
1265 |
infoPtr = (FileInfo *) ckalloc((unsigned) sizeof(FileInfo));
|
|
sl@0
|
1266 |
/* TIP #218. Removed the code inserting the new structure
|
|
sl@0
|
1267 |
* into the global list. This is now handled in the thread
|
|
sl@0
|
1268 |
* action callbacks, and only there.
|
|
sl@0
|
1269 |
*/
|
|
sl@0
|
1270 |
infoPtr->nextPtr = NULL;
|
|
sl@0
|
1271 |
infoPtr->validMask = permissions;
|
|
sl@0
|
1272 |
infoPtr->watchMask = 0;
|
|
sl@0
|
1273 |
infoPtr->flags = appendMode;
|
|
sl@0
|
1274 |
infoPtr->handle = handle;
|
|
sl@0
|
1275 |
infoPtr->dirty = 0;
|
|
sl@0
|
1276 |
wsprintfA(channelName, "file%lx", (int) infoPtr);
|
|
sl@0
|
1277 |
|
|
sl@0
|
1278 |
infoPtr->channel = Tcl_CreateChannel(&fileChannelType, channelName,
|
|
sl@0
|
1279 |
(ClientData) infoPtr, permissions);
|
|
sl@0
|
1280 |
|
|
sl@0
|
1281 |
/*
|
|
sl@0
|
1282 |
* Files have default translation of AUTO and ^Z eof char, which
|
|
sl@0
|
1283 |
* means that a ^Z will be accepted as EOF when reading.
|
|
sl@0
|
1284 |
*/
|
|
sl@0
|
1285 |
|
|
sl@0
|
1286 |
Tcl_SetChannelOption(NULL, infoPtr->channel, "-translation", "auto");
|
|
sl@0
|
1287 |
Tcl_SetChannelOption(NULL, infoPtr->channel, "-eofchar", "\032 {}");
|
|
sl@0
|
1288 |
|
|
sl@0
|
1289 |
return infoPtr->channel;
|
|
sl@0
|
1290 |
}
|
|
sl@0
|
1291 |
|
|
sl@0
|
1292 |
|
|
sl@0
|
1293 |
/*
|
|
sl@0
|
1294 |
*----------------------------------------------------------------------
|
|
sl@0
|
1295 |
*
|
|
sl@0
|
1296 |
* TclWinFlushDirtyChannels --
|
|
sl@0
|
1297 |
*
|
|
sl@0
|
1298 |
* Flush all dirty channels to disk, so that requesting the
|
|
sl@0
|
1299 |
* size of any file returns the correct value.
|
|
sl@0
|
1300 |
*
|
|
sl@0
|
1301 |
* Results:
|
|
sl@0
|
1302 |
* None.
|
|
sl@0
|
1303 |
*
|
|
sl@0
|
1304 |
* Side effects:
|
|
sl@0
|
1305 |
* Information is actually written to disk now, rather than
|
|
sl@0
|
1306 |
* later. Don't call this too often, or there will be a
|
|
sl@0
|
1307 |
* performance hit (i.e. only call when we need to ask for
|
|
sl@0
|
1308 |
* the size of a file).
|
|
sl@0
|
1309 |
*
|
|
sl@0
|
1310 |
*----------------------------------------------------------------------
|
|
sl@0
|
1311 |
*/
|
|
sl@0
|
1312 |
|
|
sl@0
|
1313 |
void
|
|
sl@0
|
1314 |
TclWinFlushDirtyChannels ()
|
|
sl@0
|
1315 |
{
|
|
sl@0
|
1316 |
FileInfo *infoPtr;
|
|
sl@0
|
1317 |
ThreadSpecificData *tsdPtr;
|
|
sl@0
|
1318 |
|
|
sl@0
|
1319 |
tsdPtr = FileInit();
|
|
sl@0
|
1320 |
|
|
sl@0
|
1321 |
/*
|
|
sl@0
|
1322 |
* Flush all channels which are dirty, i.e. may have data pending
|
|
sl@0
|
1323 |
* in the OS
|
|
sl@0
|
1324 |
*/
|
|
sl@0
|
1325 |
|
|
sl@0
|
1326 |
for (infoPtr = tsdPtr->firstFilePtr;
|
|
sl@0
|
1327 |
infoPtr != NULL;
|
|
sl@0
|
1328 |
infoPtr = infoPtr->nextPtr) {
|
|
sl@0
|
1329 |
if (infoPtr->dirty) {
|
|
sl@0
|
1330 |
FlushFileBuffers(infoPtr->handle);
|
|
sl@0
|
1331 |
infoPtr->dirty = 0;
|
|
sl@0
|
1332 |
}
|
|
sl@0
|
1333 |
}
|
|
sl@0
|
1334 |
}
|
|
sl@0
|
1335 |
|
|
sl@0
|
1336 |
/*
|
|
sl@0
|
1337 |
*----------------------------------------------------------------------
|
|
sl@0
|
1338 |
*
|
|
sl@0
|
1339 |
* FileThreadActionProc --
|
|
sl@0
|
1340 |
*
|
|
sl@0
|
1341 |
* Insert or remove any thread local refs to this channel.
|
|
sl@0
|
1342 |
*
|
|
sl@0
|
1343 |
* Results:
|
|
sl@0
|
1344 |
* None.
|
|
sl@0
|
1345 |
*
|
|
sl@0
|
1346 |
* Side effects:
|
|
sl@0
|
1347 |
* Changes thread local list of valid channels.
|
|
sl@0
|
1348 |
*
|
|
sl@0
|
1349 |
*----------------------------------------------------------------------
|
|
sl@0
|
1350 |
*/
|
|
sl@0
|
1351 |
|
|
sl@0
|
1352 |
static void
|
|
sl@0
|
1353 |
FileThreadActionProc (instanceData, action)
|
|
sl@0
|
1354 |
ClientData instanceData;
|
|
sl@0
|
1355 |
int action;
|
|
sl@0
|
1356 |
{
|
|
sl@0
|
1357 |
ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey);
|
|
sl@0
|
1358 |
FileInfo *infoPtr = (FileInfo *) instanceData;
|
|
sl@0
|
1359 |
|
|
sl@0
|
1360 |
if (action == TCL_CHANNEL_THREAD_INSERT) {
|
|
sl@0
|
1361 |
infoPtr->nextPtr = tsdPtr->firstFilePtr;
|
|
sl@0
|
1362 |
tsdPtr->firstFilePtr = infoPtr;
|
|
sl@0
|
1363 |
} else {
|
|
sl@0
|
1364 |
FileInfo **nextPtrPtr;
|
|
sl@0
|
1365 |
int removed = 0;
|
|
sl@0
|
1366 |
|
|
sl@0
|
1367 |
for (nextPtrPtr = &(tsdPtr->firstFilePtr); (*nextPtrPtr) != NULL;
|
|
sl@0
|
1368 |
nextPtrPtr = &((*nextPtrPtr)->nextPtr)) {
|
|
sl@0
|
1369 |
if ((*nextPtrPtr) == infoPtr) {
|
|
sl@0
|
1370 |
(*nextPtrPtr) = infoPtr->nextPtr;
|
|
sl@0
|
1371 |
removed = 1;
|
|
sl@0
|
1372 |
break;
|
|
sl@0
|
1373 |
}
|
|
sl@0
|
1374 |
}
|
|
sl@0
|
1375 |
|
|
sl@0
|
1376 |
/*
|
|
sl@0
|
1377 |
* This could happen if the channel was created in one thread
|
|
sl@0
|
1378 |
* and then moved to another without updating the thread
|
|
sl@0
|
1379 |
* local data in each thread.
|
|
sl@0
|
1380 |
*/
|
|
sl@0
|
1381 |
|
|
sl@0
|
1382 |
if (!removed) {
|
|
sl@0
|
1383 |
panic("file info ptr not on thread channel list");
|
|
sl@0
|
1384 |
}
|
|
sl@0
|
1385 |
}
|
|
sl@0
|
1386 |
}
|
|
sl@0
|
1387 |
|
|
sl@0
|
1388 |
|
|
sl@0
|
1389 |
/*
|
|
sl@0
|
1390 |
*----------------------------------------------------------------------
|
|
sl@0
|
1391 |
*
|
|
sl@0
|
1392 |
* FileGetType --
|
|
sl@0
|
1393 |
*
|
|
sl@0
|
1394 |
* Given a file handle, return its type
|
|
sl@0
|
1395 |
*
|
|
sl@0
|
1396 |
* Results:
|
|
sl@0
|
1397 |
* None.
|
|
sl@0
|
1398 |
*
|
|
sl@0
|
1399 |
* Side effects:
|
|
sl@0
|
1400 |
* None.
|
|
sl@0
|
1401 |
*
|
|
sl@0
|
1402 |
*----------------------------------------------------------------------
|
|
sl@0
|
1403 |
*/
|
|
sl@0
|
1404 |
|
|
sl@0
|
1405 |
DWORD
|
|
sl@0
|
1406 |
FileGetType(handle)
|
|
sl@0
|
1407 |
HANDLE handle; /* Opened file handle */
|
|
sl@0
|
1408 |
{
|
|
sl@0
|
1409 |
DWORD type;
|
|
sl@0
|
1410 |
DWORD consoleParams;
|
|
sl@0
|
1411 |
DCB dcb;
|
|
sl@0
|
1412 |
|
|
sl@0
|
1413 |
type = GetFileType(handle);
|
|
sl@0
|
1414 |
|
|
sl@0
|
1415 |
/*
|
|
sl@0
|
1416 |
* If the file is a character device, we need to try to figure out
|
|
sl@0
|
1417 |
* whether it is a serial port, a console, or something else. We
|
|
sl@0
|
1418 |
* test for the console case first because this is more common.
|
|
sl@0
|
1419 |
*/
|
|
sl@0
|
1420 |
|
|
sl@0
|
1421 |
if (type == FILE_TYPE_CHAR || (type == FILE_TYPE_UNKNOWN && !GetLastError())) {
|
|
sl@0
|
1422 |
if (GetConsoleMode(handle, &consoleParams)) {
|
|
sl@0
|
1423 |
type = FILE_TYPE_CONSOLE;
|
|
sl@0
|
1424 |
} else {
|
|
sl@0
|
1425 |
dcb.DCBlength = sizeof( DCB ) ;
|
|
sl@0
|
1426 |
if (GetCommState(handle, &dcb)) {
|
|
sl@0
|
1427 |
type = FILE_TYPE_SERIAL;
|
|
sl@0
|
1428 |
}
|
|
sl@0
|
1429 |
}
|
|
sl@0
|
1430 |
}
|
|
sl@0
|
1431 |
|
|
sl@0
|
1432 |
return type;
|
|
sl@0
|
1433 |
}
|