236 lines
6.5 KiB
C
236 lines
6.5 KiB
C
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/*++
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Copyright (c) 1988-1999 Microsoft Corporation
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Module Name:
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csig.c
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Abstract:
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Interrupt (^C) processing
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--*/
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#include "cmd.h"
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//
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// console mode at program startup time. Used to reset mode
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// after running another process.
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//
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extern DWORD dwCurInputConMode;
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extern DWORD dwCurOutputConMode;
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extern int Ctrlc;
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VOID ResetCtrlC();
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int SigHandFlag = FALSE ;
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/* Commands that temporarily change directories, save a ptr to the original
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* directory string here so that it can be restored by SigHand() if the
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* command is interrupted before it has a chance to do it, itself.
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*/
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TCHAR *SaveDir = NULL ;
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unsigned SIGNALcnt = 0;
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extern int PipeCnt ; /* M016 - Cnt of active pipes */
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extern int LastRetCode ;
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extern jmp_buf MainEnv ;
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extern jmp_buf CmdJBuf1 ;
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extern unsigned long OHTbl[] ; /* M024 - Revised to be bit map */
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extern PHANDLE FFhandles; /* @@1 */
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extern unsigned FFhndlsaved; /* @@1 */
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extern struct sellist *prexxsellist;
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extern struct rio *rioCur ; /* M000 */
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extern TCHAR *Fvars ; /* M026 */
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extern TCHAR **Fsubs ; /* M026 */
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extern TCHAR *save_Fvars ; /* @@ */
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extern TCHAR **save_Fsubs ; /* @@ */
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extern int FvarsSaved; /* @@ */
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extern TCHAR InternalError[] ;
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extern int EchoFlag ;
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extern int EchoSave ; /* M013 - Used to restore echo status */
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extern TCHAR ComSpec[] ; /* M008 - For clearing SM shared memory */
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extern TCHAR ComSpecStr[] ; /* M026 - Use ComSpec for SM memory */
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extern TCHAR *CmdSpec ; /* M026 */
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extern unsigned Heof;
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extern unsigned start_type ; /* Flag to indicate which API started the */
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/* program. D64 */
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extern BOOL CtrlCSeen;
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extern PTCHAR pszTitleCur;
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extern BOOLEAN fTitleChanged;
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void
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Abort( void )
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{
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DEBUG((SHGRP, MSLVL, "SIGHAND: Aborting Command")) ;
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SigCleanUp();
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longjmp(MainEnv, 1) ;
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CMDexit( FAILURE );
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}
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void
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CtrlCAbort( ) {
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struct batdata *bdat;
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if (CurrentBatchFile) {
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if (PromptUser(NULL, MSG_BATCH_TERM, MSG_NOYES_RESPONSE_DATA) != 1) {
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ResetCtrlC();
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return;
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}
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//
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// End local environments ( Otherwise we can end up with garbage
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// in the main environment if any batch file used the setlocal
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// command ).
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//
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bdat = CurrentBatchFile;
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while ( bdat ) {
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EndAllLocals( bdat );
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bdat = bdat->backptr;
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}
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}
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SigCleanUp();
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longjmp(MainEnv, 1) ;
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}
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void
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CheckCtrlC (
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) {
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if (CtrlCSeen) {
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CtrlCAbort();
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}
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}
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void
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ExitAbort(
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IN ULONG rcExitCode
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)
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{
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SigCleanUp();
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longjmp(MainEnv, rcExitCode) ;
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CMDexit( FAILURE );
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}
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/*** SigCleanUp - close files and reset I/O after a signal
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*
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* Purpose:
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* This function is called to finish the cleanup after an int 23 or 24.
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* It resets all redirection back to the main level and it closes all
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* files except those for stdin, stdout, stderr, stdaux and stdprint.
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*
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* void SigCleanUp()
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*
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* Args:
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* None.
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*
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* Returns:
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* Nothing.
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*
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* Notes:
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* - M024 * Revised handle closing to be bit map based rather than struct.
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*
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*/
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void SigCleanUp() /* M000 - Now void */
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{
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int cnt, cnt2 ;
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unsigned long mask;
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Heof = FALSE;
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#ifndef WIN95_CMD
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if (CurrentBatchFile) {
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// Following CmdBatNotification call is a cleanup for the
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// same call made from BatProc (in cbatch.c).
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CmdBatNotification (CMD_BAT_OPERATION_TERMINATING);
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EchoFlag = EchoSave ;
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GotoFlag = FALSE ;
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eEndlocal( NULL ) ;
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CurrentBatchFile = NULL ;
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} ;
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#endif // WIN95_CMD
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if (!FvarsSaved) { /* @WM If already saved, don't save again */
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save_Fvars = Fvars; /* @@ */
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save_Fsubs = Fsubs; /* @@ */
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FvarsSaved = TRUE; /* @@ */
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}
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Fvars = NULL ; /* M026 - Must kill FOR */
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Fsubs = NULL ; /* ...variable subst's */
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/* M000 - New method is simpler. If redirection has been done, the highest
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* numbered handle resulting from redirection is saved, then the linked
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* riodata list is unlinked until the first (main) level of redirection is
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* reached at which time ResetRedir is used to reset it. Then all open
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* handles from 5 to the highest numbered redirection handle (minimum of
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* 19) are freed.
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* M014 - Altered this to use actual global pointer when unwinding the
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* riodata list to fix bug. Also revised the ->stdio element to conform
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* to new data structure. Note that ResetRedir automatically resets the
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* rioCur pointer to the last valid riodata structure before returning;
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* same as if "rioCur=rioCur->back" was in the while loop.
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*/
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DEBUG((SHGRP, MSLVL, "SCLEANUP: Resetting redirection.")) ;
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while (rioCur)
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ResetRedir() ;
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DEBUG((SHGRP, MSLVL, "SCLEANUP: Breaking pipes.")) ;
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BreakPipes() ;
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DEBUG((SHGRP, MSLVL, "SCLEANUP: Now closing extra handles.")) ;
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for (cnt = 0; cnt < 3; cnt++) {
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if (OHTbl[cnt]) { /* Any handles to reset? */
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mask = 1; /* @@1 */
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for (cnt2 = 0; cnt2 < 32; cnt2++, mask <<= 1) { /* @@1 */
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if ((OHTbl[cnt] & mask) && /* @@1 */
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((cnt == 0 && cnt2 > 2) || cnt != 0) ) { /* @@1 */
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/* Don't close STDIN, STDOUT, STDERR */ /* @@1 */
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Cclose(cnt2 + 32*cnt); /* @@1 */
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} /* @@1 */
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} /* @@1 */
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} /* @@1 */
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}
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/* Close find first handles */ /* @@1 */
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while (FFhndlsaved) { /* findclose will dec this @@1 */
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findclose(FFhandles[FFhndlsaved - 1]); /* @@1 */
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} /* @@1 */
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ResetConTitle( pszTitleCur );
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ResetConsoleMode();
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DEBUG((SHGRP, MSLVL, "SCLEANUP: Returning.")) ;
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}
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