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- head 1.4;
- branch ;
- access ;
- symbols sprited:1.4.1;
- locks ; strict;
- comment @ * @;
-
-
- 1.4
- date 90.12.13.17.07.42; author shirriff; state Exp;
- branches 1.4.1.1;
- next 1.3;
-
- 1.3
- date 89.06.15.12.54.46; author ouster; state Exp;
- branches ;
- next 1.2;
-
- 1.2
- date 88.07.29.17.40.28; author ouster; state Exp;
- branches ;
- next 1.1;
-
- 1.1
- date 88.06.19.14.32.01; author ouster; state Exp;
- branches ;
- next ;
-
- 1.4.1.1
- date 92.01.31.16.36.41; author kupfer; state Exp;
- branches ;
- next ;
-
-
- desc
- @@
-
-
- 1.4
- log
- @Changed signal handlers to return more information.
- @
- text
- @/*
- * sigvec.c --
- *
- * Procedure to map from Unix sigvec system call to Sprite.
- *
- * Note: None of the special flags in the sigvec structure is supported
- * as yet. Eventually we could support the signal stack, if we're kludgey,
- * the interruption, if we use the raw Sprite system calls for the
- * emulation, and the reset handler (Sun UNIX only) bits if desired.
- *
- * Note further: many Unix signals are not supported under Sprite.
- *
- * Copyright (C) 1986 Regents of the University of California
- * All rights reserved.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: /sprite/src/lib/c/unixSyscall/RCS/sigvec.c,v 1.3 89/06/15 12:54:46 ouster Exp $ SPRITE (Berkeley)";
- #endif not lint
-
- #include "sprite.h"
- #include "sig.h"
-
- #include "compatInt.h"
- #include <signal.h>
- #include <errno.h>
-
- /*
- * Array of signal handlers for UNIX signals. Need the extra indirection
- * to provide the proper UNIX signal number to the handler, since it may
- * decide what to do based on that number...We'll worry about codes later.
- */
- void (*unixHandlers[NSIG])();
-
- /*
- *----------------------------------------------------------------------
- *
- * unixHandleSig --
- *
- * Procedure to handle the receipt of a Sprite signal. Maps the
- * Sprite signal to a UNIX signal and calls the right handler.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The signal handler for the UNIX signal is called. Note that since
- * several UNIX signals may map to the same Sprite signal, there
- * will be problems if different functions are given for the
- * overlapping signals.
- *
- *----------------------------------------------------------------------
- */
- /* ARGSUSED */
-
- static
- unixHandleSig (spriteSig, spriteCode, sigContext, sigAddr)
- int spriteSig; /* Sprite signal being delivered */
- int spriteCode; /* Sub code of signal */
-
- struct sigcontext *sigContext; /* Context of signal. */
- char *sigAddr; /* Address of fault. */
- {
- int unixSig; /* "Equivalent" UNIX signal */
-
- if ((Compat_SpriteSignalToUnix (spriteSig, &unixSig) == SUCCESS) &&
- (unixHandlers[unixSig] != (void (*)()) NULL)) {
- /*
- * XXX: Should decode spriteCode and pass sigcontext *
- */
- (* unixHandlers[unixSig]) (unixSig, spriteCode, sigContext,
- sigAddr);
- }
- /*
- * XXX: Should warn about bogus signal handler, yes?
- */
- }
-
-
- /*
- *----------------------------------------------------------------------
- *
- * sigvec --
- *
- * Procedure to map from Unix sigvec system call to Sprite Sig_SetAction.
- *
- * Results:
- * UNIX_ERROR is returned upon error, with the actual error code
- * stored in errno. Upon success 0 is returned.
- *
- * Side effects:
- * The signal handler associated with the specified signal is modified.
- *
- *----------------------------------------------------------------------
- */
- int
- sigvec(sig, newVectorPtr, oldVectorPtr)
- int sig; /* Signal to set the vector for. */
- struct sigvec *newVectorPtr; /* New vector. */
- struct sigvec *oldVectorPtr; /* Old vector. */
- {
- int spriteSignal; /* Equivalent signal for Sprite */
- Sig_Action newAction; /* Action to take */
- Sig_Action oldAction; /* Former action */
- ReturnStatus status; /* Generic result code */
- void (*handler)(); /* New handler for UNIX signal */
-
- status = Compat_UnixSignalToSprite(sig, &spriteSignal);
- if (status == FAILURE || spriteSignal == NULL) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
- handler = (void (*)()) NULL;
-
- if (newVectorPtr != (struct sigvec *)NULL) {
- switch ((int)newVectorPtr->sv_handler) {
- case SIG_DFL:
- newAction.action = SIG_DEFAULT_ACTION;
- break;
- case SIG_IGN:
- newAction.action = SIG_IGNORE_ACTION;
- break;
- default:
- newAction.action = SIG_HANDLE_ACTION;
- newAction.handler = unixHandleSig;
- handler = newVectorPtr->sv_handler;
- }
- status = Compat_UnixSigMaskToSprite(newVectorPtr->sv_mask,
- &newAction.sigHoldMask);
- if (status == FAILURE) {
- errno = EINVAL;
- return(UNIX_ERROR);
- }
-
- status = Sig_SetAction(spriteSignal, &newAction, &oldAction);
- if (status != SUCCESS) {
- errno = Compat_MapCode(status);
- return(UNIX_ERROR);
- }
- }
-
- if (oldVectorPtr != NULL) {
- switch (oldAction.action) {
- case SIG_DEFAULT_ACTION:
- oldVectorPtr->sv_handler = SIG_DFL;
- break;
- case SIG_IGNORE_ACTION:
- oldVectorPtr->sv_handler = SIG_IGN;
- break;
- default:
- oldVectorPtr->sv_handler = unixHandlers[sig];
- break;
- }
- (void) Compat_SpriteSigMaskToUnix(oldAction.sigHoldMask,
- &oldVectorPtr->sv_mask);
- oldVectorPtr->sv_flags = 0;
- }
-
- if (newVectorPtr != NULL) {
- unixHandlers[sig] = handler;
- }
-
- return(UNIX_SUCCESS);
- }
- @
-
-
- 1.4.1.1
- log
- @Initial branch for Sprite server.
- @
- text
- @d18 1
- a18 1
- static char rcsid[] = "$Header: /sprite/src/lib/c/unixSyscall/RCS/sigvec.c,v 1.4 90/12/13 17:07:42 shirriff Exp $ SPRITE (Berkeley)";
- @
-
-
- 1.3
- log
- @Make signal handlers return void instead of int.
- @
- text
- @d18 1
- a18 1
- static char rcsid[] = "$Header: /sprite/src/lib/c/unixSyscall/RCS/sigvec.c,v 1.2 88/07/29 17:40:28 ouster Exp Locker: ouster $ SPRITE (Berkeley)";
- d57 1
- a57 1
- unixHandleSig (spriteSig, spriteCode)
- d60 3
- d71 2
- a72 1
- (* unixHandlers[unixSig]) (unixSig, 0);
- @
-
-
- 1.2
- log
- @Lint.
- @
- text
- @d18 1
- a18 1
- static char rcsid[] = "$Header: sigvec.c,v 1.1 88/06/19 14:32:01 ouster Exp $ SPRITE (Berkeley)";
- d33 1
- a33 1
- int (*unixHandlers[NSIG])();
- d64 1
- a64 1
- (unixHandlers[unixSig] != (int (*)()) NULL)) {
- d102 1
- a102 1
- int (*handler)(); /* New handler for UNIX signal */
- d109 1
- a109 1
- handler = (int (*)()) NULL;
- @
-
-
- 1.1
- log
- @Initial revision
- @
- text
- @d18 1
- a18 1
- static char rcsid[] = "$Header: sigvec.c,v 1.2 88/01/07 11:58:02 deboor Exp $ SPRITE (Berkeley)";
- d54 2
- @
-