You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
256 lines
7.1 KiB
256 lines
7.1 KiB
/*
|
|
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* Further, this software is distributed without any warranty that it is
|
|
* free of the rightful claim of any third person regarding infringement
|
|
* or the like. Any license provided herein, whether implied or
|
|
* otherwise, applies only to this software file. Patent licenses, if
|
|
* any, provided herein do not apply to combinations of this program with
|
|
* other software, or any other product whatsoever.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
|
|
* Mountain View, CA 94043, or:
|
|
*
|
|
* http://www.sgi.com
|
|
*
|
|
* For further information regarding this notice, see:
|
|
*
|
|
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
|
|
*/
|
|
|
|
/* $Id: tst_sig.c,v 1.13 2009/08/28 09:29:01 vapier Exp $ */
|
|
|
|
/*****************************************************************************
|
|
OS Testing - Silicon Graphics, Inc.
|
|
|
|
FUNCTION IDENTIFIER : tst_sig Set up for unexpected signals.
|
|
|
|
AUTHOR : David D. Fenner
|
|
|
|
CO-PILOT : Bill Roske
|
|
|
|
DATE STARTED : 06/06/90
|
|
|
|
This module may be linked with c-modules requiring unexpected
|
|
signal handling. The parameters to tst_sig are as follows:
|
|
|
|
fork_flag - set to FORK or NOFORK depending upon whether the
|
|
calling program executes a fork() system call. It
|
|
is normally the case that the calling program treats
|
|
SIGCHLD as an expected signal if fork() is being used.
|
|
|
|
handler - a pointer to the unexpected signal handler to
|
|
be executed after an unexpected signal has been
|
|
detected. If handler is set to DEF_HANDLER, a
|
|
default handler is used. This routine should be
|
|
declared as function returning an int.
|
|
|
|
cleanup - a pointer to a cleanup routine to be executed
|
|
by the unexpected signal handler before tst_exit is
|
|
called. This parameter is set to NULL if no cleanup
|
|
routine is required. An external variable, T_cleanup
|
|
is set so that other user-defined handlers have
|
|
access to the cleanup routine. This routine should be
|
|
declared as returning type void.
|
|
|
|
***************************************************************************/
|
|
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
#include "test.h"
|
|
#include "lapi/signal.h"
|
|
|
|
#define MAXMESG 150 /* size of mesg string sent to tst_res */
|
|
|
|
static void (*T_cleanup) ();
|
|
|
|
static void def_handler(); /* default signal handler */
|
|
static void (*tst_setup_signal(int, void (*)(int))) (int);
|
|
|
|
/****************************************************************************
|
|
* tst_sig() : set-up to catch unexpected signals. fork_flag is set to NOFORK
|
|
* if SIGCHLD is to be an "unexpected signal", otherwise it is set to
|
|
* FORK. cleanup points to a cleanup routine to be executed before
|
|
* tst_exit is called (cleanup is set to NULL if no cleanup is desired).
|
|
* handler is a pointer to the signal handling routine (if handler is
|
|
* set to NULL, a default handler is used).
|
|
***************************************************************************/
|
|
|
|
void tst_sig(int fork_flag, void (*handler) (), void (*cleanup) ())
|
|
{
|
|
int sig;
|
|
#ifdef _SC_SIGRT_MIN
|
|
long sigrtmin, sigrtmax;
|
|
#endif
|
|
|
|
/*
|
|
* save T_cleanup and handler function pointers
|
|
*/
|
|
T_cleanup = cleanup; /* used by default handler */
|
|
|
|
if (handler == DEF_HANDLER) {
|
|
/* use default handler */
|
|
handler = def_handler;
|
|
}
|
|
#ifdef _SC_SIGRT_MIN
|
|
sigrtmin = sysconf(_SC_SIGRT_MIN);
|
|
sigrtmax = sysconf(_SC_SIGRT_MAX);
|
|
#endif
|
|
|
|
/*
|
|
* now loop through all signals and set the handlers
|
|
*/
|
|
|
|
for (sig = 1; sig < NSIG; sig++) {
|
|
/*
|
|
* SIGKILL is never unexpected.
|
|
* SIGCHLD is only unexpected when
|
|
* no forking is being done.
|
|
* SIGINFO is used for file quotas and should be expected
|
|
*/
|
|
|
|
#ifdef _SC_SIGRT_MIN
|
|
if (sig >= sigrtmin && sig <= sigrtmax)
|
|
continue;
|
|
#endif
|
|
|
|
switch (sig) {
|
|
case SIGKILL:
|
|
case SIGSTOP:
|
|
case SIGCONT:
|
|
#if !defined(_SC_SIGRT_MIN) && defined(__SIGRTMIN) && defined(__SIGRTMAX)
|
|
/* Ignore all real-time signals */
|
|
case __SIGRTMIN:
|
|
case __SIGRTMIN + 1:
|
|
case __SIGRTMIN + 2:
|
|
case __SIGRTMIN + 3:
|
|
case __SIGRTMIN + 4:
|
|
case __SIGRTMIN + 5:
|
|
case __SIGRTMIN + 6:
|
|
case __SIGRTMIN + 7:
|
|
case __SIGRTMIN + 8:
|
|
case __SIGRTMIN + 9:
|
|
case __SIGRTMIN + 10:
|
|
case __SIGRTMIN + 11:
|
|
case __SIGRTMIN + 12:
|
|
case __SIGRTMIN + 13:
|
|
case __SIGRTMIN + 14:
|
|
case __SIGRTMIN + 15:
|
|
/* __SIGRTMIN is 37 on HPPA rather than 32 *
|
|
* as on i386, etc. */
|
|
#if !defined(__hppa__)
|
|
case __SIGRTMAX - 15:
|
|
case __SIGRTMAX - 14:
|
|
case __SIGRTMAX - 13:
|
|
case __SIGRTMAX - 12:
|
|
case __SIGRTMAX - 11:
|
|
#endif
|
|
case __SIGRTMAX - 10:
|
|
case __SIGRTMAX - 9:
|
|
case __SIGRTMAX - 8:
|
|
case __SIGRTMAX - 7:
|
|
case __SIGRTMAX - 6:
|
|
case __SIGRTMAX - 5:
|
|
case __SIGRTMAX - 4:
|
|
case __SIGRTMAX - 3:
|
|
case __SIGRTMAX - 2:
|
|
case __SIGRTMAX - 1:
|
|
case __SIGRTMAX:
|
|
#endif
|
|
#ifdef SIGSWAP
|
|
case SIGSWAP:
|
|
#endif /* SIGSWAP */
|
|
|
|
#ifdef SIGCKPT
|
|
case SIGCKPT:
|
|
#endif
|
|
#ifdef SIGRESTART
|
|
case SIGRESTART:
|
|
#endif
|
|
/*
|
|
* pthread-private signals SIGPTINTR and SIGPTRESCHED.
|
|
* Setting a handler for these signals is disallowed when
|
|
* the binary is linked against libpthread.
|
|
*/
|
|
#ifdef SIGPTINTR
|
|
case SIGPTINTR:
|
|
#endif /* SIGPTINTR */
|
|
#ifdef SIGPTRESCHED
|
|
case SIGPTRESCHED:
|
|
#endif /* SIGPTRESCHED */
|
|
#ifdef _SIGRESERVE
|
|
case _SIGRESERVE:
|
|
#endif
|
|
#ifdef _SIGDIL
|
|
case _SIGDIL:
|
|
#endif
|
|
#ifdef _SIGCANCEL
|
|
case _SIGCANCEL:
|
|
#endif
|
|
#ifdef _SIGGFAULT
|
|
case _SIGGFAULT:
|
|
#endif
|
|
break;
|
|
|
|
case SIGCHLD:
|
|
if (fork_flag == FORK)
|
|
continue;
|
|
|
|
default:
|
|
if (tst_setup_signal(sig, handler) == SIG_ERR)
|
|
tst_resm(TWARN | TERRNO,
|
|
"signal failed for signal %d", sig);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* def_handler() : default signal handler that is invoked when
|
|
* an unexpected signal is caught.
|
|
***************************************************************************/
|
|
|
|
static void def_handler(int sig)
|
|
{
|
|
/*
|
|
* Break remaining test cases, do any cleanup, then exit
|
|
*/
|
|
tst_brkm(TBROK, T_cleanup,
|
|
"unexpected signal %s(%d) received (pid = %d).",
|
|
tst_strsig(sig), sig, getpid());
|
|
}
|
|
|
|
/*
|
|
* tst_setup_signal - A function like signal(), but we have
|
|
* control over its personality.
|
|
*/
|
|
static void (*tst_setup_signal(int sig, void (*handler) (int))) (int) {
|
|
struct sigaction my_act, old_act;
|
|
int ret;
|
|
|
|
my_act.sa_handler = handler;
|
|
my_act.sa_flags = SA_RESTART;
|
|
sigemptyset(&my_act.sa_mask);
|
|
|
|
ret = sigaction(sig, &my_act, &old_act);
|
|
|
|
if (ret == 0)
|
|
return old_act.sa_handler;
|
|
else
|
|
return SIG_ERR;
|
|
}
|