664 lines
17 KiB
C
664 lines
17 KiB
C
/*
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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
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*
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*/
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/* $Id$ */
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/***********************************************************************************
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*
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* OS Test - Silicon Graphics, Inc. Eagan, Minnesota
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*
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* TEST IDENTIFIER : signal03 Boundary value and other invalid value checking
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* of signal setup and signal sending.
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*
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* PARENT DOCUMENT : sgntds01 Signal System Call
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*
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* AUTHOR : Dave Baumgartner
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* : Rewrote 12/92 by Richard Logan
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*
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* CO-PILOT : Barrie Kletscher
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*
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* DATE STARTED : 10/17/85
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*
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* TEST ITEMS
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*
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* 1. SIGKILL can not be set to be caught, errno:EINVAL (POSIX).
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* 2. SIGKILL can not be caught.
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* 3. SIGKILL can not be set to be ignored, errno:EINVAL (POSIX).
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* 4. SIGKILL can not be ignored.
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* 5. SIGKILL can not be reset to default, errno:EINVAL (POSIX.
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*
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* ENVIRONMENTAL NEEDS
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*
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* NONE
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*
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* SPECIAL PROCEDURAL REQUIREMENTS
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*
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* None
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*
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* INTERCASE DEPENDENCIES
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*
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* 2 depends on 1 and 4 on 3.
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*
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* DETAILED DESCRIPTION
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*
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* main()
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* Call catch_test to test setup and catching of SIGKILL.
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*
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*
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* Call ignore_test to test setup and ignoring of SIGKILL.
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*
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*
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* Call sigdfl_test to test setting SIGKILL to default.
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*
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* * END OF MAIN *
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*
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*
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* catch_test()
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*
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* fork a child
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* if this is the parent
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* sleep to let child start.
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* send sig to child.
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* wait for the child to terminate.
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*
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* if the termination status of the child equals the signal sent to it
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* Test item 1 PASSED the child was killed.
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* else if status equals the exit value of SIG_CAUGHT
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* Test item 2 FAILED sig was caught.
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* else
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* Test item 2 FAILED because the child was not killed
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* but sig was not caught either.
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*
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* else this the child
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* set exit_val to SIG_NOT_CAUGHT.
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* set to catch sig, where the interrupt routine just sets
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* exit_val to SIG_CAUGHT.
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*
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* If the return value and errno, after trying to set to catch sig,
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* do not indicate that an error has occurred.
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* Test item 1 FAILED bad return, return value:X, errno:X.
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* else
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* Test item 1 PASSED sig was not set to be caught.
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*
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* pause until the parent sends a signal.
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* The child should be killed by the signal but if not exit
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* with exit_val.
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*
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* * End of catch_test. *
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*
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*
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* ignore_test()
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*
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* fork a child
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* if this is the parent
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* sleep to let child start.
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* send SIGKILL to child.
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* wait for the child to terminate.
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*
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* if the termination status of the child equals SIGKILL
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* Test item 4 PASSED the child was killed.
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* else if the status equals the exit value of SIG_IGNORED
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* Test item 4 FAILED SIGKILL was ignored.
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*
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* else this the child
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*
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* If the return value and errno, after trying to set to ignore SIGKILL,
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* do not indicate that an error has occurred.
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* Test item 3 FAILED bad return, return value:X, errno:X.
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* else
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* Test item 3 PASSED SIGKILL was not set to be ignored.
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*
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* pause until the parent sends SIGKILL.
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* The child should be killed by the signal but if not exit
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* with SIG_IGNORED.
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*
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* * End of ignore_test. *
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*
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*
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* sigdfl_test()
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*
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* If the return value and errno, after trying to set to SIGKILL to default,
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* do not indicate that an error has occurred.
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* Test item 5 FAILED bad return, return value:X, errno:X.
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* else
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* Test item 5 PASSED SIGKILL was not set to default.
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*
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* * End of sigdfl_test. *
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*
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* BUGS/NOTES
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* Since the system call under test is executed in the child, no
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* timings on this system call will be reported.
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*
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***********************************************************************************/
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#include <signal.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <sys/wait.h>
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#include "test.h"
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#include "usctest.h"
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void setup();
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void cleanup(void) __attribute__((noreturn));
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void do_test();
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void sigdfl_test();
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void update_timings();
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#if defined(linux)
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# define SIG_PF sig_t /* This might need to be sighandler_t on some systems */
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#elif defined(__CYGWIN__)
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typedef void (*sighandler_t) (int);
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#define SIG_PF sighandler_t
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#endif
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#define SIG_CAUGHT 1
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#define SIG_NOT_CAUGHT 0
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#define SIG_IGNORED 5
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#define TIMED_OUT 99
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#define TIMEOUT 20
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#define GO_FLAG 1
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#define ERROR_FLAG 2
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#define PASS_FLAG 3
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#define FAIL_FLAG 4
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#define IGNORE_TEST 1
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#define CATCH_TEST 2
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#define MAXMESG 150 /* The Maximum message that can be created. */
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int exit_val; /* Global variable, used to tell whether the */
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/* child exited instead of being killed. */
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extern int errno; /* errno holds the error value returned by */
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/* a system call. */
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char mesg[MAXMESG]; /* Holds messages to pass to tst_res. */
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struct ipc_t {
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int status;
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char mesg[MAXMESG];
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struct tblock timings;
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} Ipc_info;
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const char *TCID = "signal03";
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int TST_TOTAL = 5;
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extern int Tst_count; /* count of test items completed */
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int Pid; /* Return value from fork. */
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long Tret;
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/***********************************************************************
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* M A I N
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***********************************************************************/
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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int lc;
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const char *msg;
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/***************************************************************
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* parse standard options
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***************************************************************/
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if ( (msg=parse_opts(argc, argv, (option_t *) NULL, NULL)) != (char *) NULL ) {
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tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
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tst_exit();
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}
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/***************************************************************
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* perform global setup for test
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***************************************************************/
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setup();
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/***************************************************************
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* check looping state if -c option given
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***************************************************************/
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for (lc=0; TEST_LOOPING(lc); lc++) {
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/* reset Tst_count in case we are looping. */
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Tst_count=0;
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errno=-4;
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/*
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* Call catch_test to test setup and catching of SIGKILL.
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*/
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(void) do_test(CATCH_TEST, Tst_count);
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/*
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* Call ignore_test to test setup and ignoring of SIGKILL.
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*/
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(void) do_test(IGNORE_TEST, Tst_count);
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/*
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* Call sigdfl_test to test setting SIGKILL to default.
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*/
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(void) sigdfl_test();
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}
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cleanup();
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return 0;
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} /*End of main*/
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/***********************************************************************
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*
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***********************************************************************/
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void
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do_test(test_case, tst_count)
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int test_case;
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int tst_count;
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{
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int term_stat; /* Termination status of the child returned to */
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/* the parent. */
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char string[30];
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int fd1[2]; /* ipc */
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int rd_sz; /* size of read */
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void p_timeout_handler();
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void c_timeout_handler();
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void catchsig();
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Tst_count = tst_count;
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/*
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* Create a pipe of ipc
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*/
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if ( pipe(fd1) == -1 ) {
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sprintf(mesg,
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"pipe system call failed, Errno: %d, Error message: %s",
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errno,strerror(errno));
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tst_resm(TBROK,mesg);
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tst_resm(TBROK,mesg);
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return;
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}
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/*
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* Cause the read to return 0 once EOF is encountered and the
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* read to return -1 if pipe is empty.
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*/
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if ( fcntl(fd1[0], F_SETFL, O_NONBLOCK) == -1 ) {
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sprintf(mesg, "fcntl(fd1[0], F_SETFL, O_NONBLOCK) failed: errno=%d",
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errno);
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tst_resm(TBROK,mesg);
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tst_resm(TBROK,mesg);
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close(fd1[0]);
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close(fd1[1]);
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return;
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}
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if ((Pid = fork()) > 0) { /* parent */
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signal(SIGALRM, p_timeout_handler);
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alarm(TIMEOUT);
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close(fd1[1]); /* close write side */
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/*
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* Deal with child's messages.
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* Only the GO_FLAG status will allow parent to
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* go on. All pipe io will be in the ipc_t structure sizes
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* to avoid reading part of next message.
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*/
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while ( 1 ) {
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while ( (rd_sz=read(fd1[0], (char *)&Ipc_info, sizeof(Ipc_info))) != 0 ) {
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if ( rd_sz > 0 )
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break; /* read something */
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}
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if ( rd_sz == 0 ) { /* if EOF encountered */
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sprintf(mesg, "child's pipe is closed before 'go' message received");
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tst_resm(TBROK, Ipc_info.mesg);
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tst_resm(TBROK, Ipc_info.mesg);
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close(fd1[0]);
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return;
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}
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else if ( Ipc_info.status == GO_FLAG ) {
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break; /* go on */
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}
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else if ( Ipc_info.status == ERROR_FLAG ) {
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tst_resm(TBROK, "From child: %s", Ipc_info.mesg);
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tst_resm(TBROK, "From child: %s", Ipc_info.mesg);
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close(fd1[0]);
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return;
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}
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else if ( Ipc_info.status == PASS_FLAG ) {
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if ( STD_FUNCTIONAL_TEST )
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tst_resm(TPASS, "From child: %s", Ipc_info.mesg);
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else
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Tst_count++;
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update_timings(Ipc_info.timings);
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}
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else if ( Ipc_info.status == FAIL_FLAG ) {
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tst_resm(TFAIL, "From child: %s", Ipc_info.mesg);
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update_timings(Ipc_info.timings);
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}
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else {
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tst_resm(TINFO, "Unknown message from child: %s", mesg);
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}
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}
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/*
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* Send the signal SIGKILL to the child.
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*/
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if (kill(Pid,SIGKILL) == -1)
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{
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/*
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* The kill system call failed.
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*/
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sprintf(mesg,
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"kill(Pid,SIGKILL) failed, Errno: %d, Error message: %s",
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errno,strerror(errno));
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tst_resm(TBROK,mesg);
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tst_resm(TBROK,mesg);
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close(fd1[0]);
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return;
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}
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/*
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* Wait for the child to terminate and check the termination status.
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*/
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if (wait(&term_stat) == -1) {
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/*
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* The wait system call failed.
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*/
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sprintf(mesg,
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"Wait system call failed. Errno: %d, Error message: %s",
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errno,strerror(errno));
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tst_resm(TBROK,mesg);
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tst_resm(TBROK,mesg);
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close(fd1[0]);
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return;
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}
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else if ( STD_FUNCTIONAL_TEST ) {
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if ((term_stat & 0377) == SIGKILL) {
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/*
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* The child was killed by the signal sent,
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* which is correct.
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*/
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tst_resm(TPASS,"The child was killed by SIGKILL.");
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}
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else if ( (term_stat >> 8) == TIMED_OUT ) {
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sprintf(mesg, "child exited with a timed out exit status");
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tst_resm(TBROK,mesg);
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}
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else {
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if ((term_stat >> 8) == SIG_IGNORED && test_case == IGNORE_TEST ) {
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sprintf(mesg,
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"SIGKILL was ignored by child after sent by parent.");
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}
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else if ((term_stat >> 8) == SIG_CAUGHT && test_case == CATCH_TEST ) {
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sprintf(mesg,
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"SIGKILL was caught by child after sent by parent.");
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}
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else {
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sprintf(mesg,
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"Child's termination status is unexpected. Status: %d (%#o).",
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term_stat, term_stat);
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}
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tst_resm(TFAIL, mesg);
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}
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}
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else {
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Tst_count++; /* increment test counter */
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}
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close(fd1[0]);
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} /* End of parent. */
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else if (Pid == 0) {
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/*
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* This is the child.
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* Set up to ignore/catch SIGKILL and check the return values.
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*/
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errno=0;
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if ( test_case == IGNORE_TEST ) {
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exit_val = SIG_IGNORED;
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strcpy(string, "signal(SIGKILL, SIG_IGN)");
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Tret=(long)signal(SIGKILL, SIG_IGN);
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TEST_ERRNO=errno;
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}
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else {
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exit_val = SIG_NOT_CAUGHT;
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strcpy(string, "signal(SIGKILL, catchsig)");
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Tret=(long)signal(SIGKILL, catchsig);
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TEST_ERRNO=errno;
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}
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Ipc_info.timings=tblock;
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if ( (SIG_PF)Tret == SIG_ERR ) {
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if ( TEST_ERRNO == EINVAL ) {
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sprintf(Ipc_info.mesg, "%s ret:%ld SIG_ERR (%ld) as expected",
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string, Tret, (long)SIG_ERR);
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Ipc_info.status = PASS_FLAG;
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}
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else {
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sprintf(Ipc_info.mesg,
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"%s ret:%ld, errno:%d expected ret:%ld, errno:%d",
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string, Tret, TEST_ERRNO, (long)SIG_ERR, EINVAL);
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Ipc_info.status = FAIL_FLAG;
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}
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write(fd1[1], (char *)&Ipc_info, sizeof(Ipc_info));
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}
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else {
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/*
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* The child was not allowed to set the signal to
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* be ignored and errno was correct.
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*/
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sprintf(Ipc_info.mesg,
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"%s ret:%ld, errno:%d expected ret:%ld, errno:%d",
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string, Tret, TEST_ERRNO, (long)SIG_ERR, EINVAL);
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Ipc_info.status = FAIL_FLAG;
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write(fd1[1], (char *)&Ipc_info, sizeof(Ipc_info));
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}
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|
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/*
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* tell parent we are ready - setup by child is done
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*/
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Ipc_info.status = GO_FLAG;
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write(fd1[1], (char *)&Ipc_info, sizeof(Ipc_info));
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|
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/*
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* Set the alarm to wake up from the pause below if
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* the parents signal is ignored.
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*/
|
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signal(SIGALRM, p_timeout_handler);
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alarm(TIMEOUT);
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|
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/*
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* Pause until the parent sends a signal or until alarm is received.
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*/
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pause();
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exit(exit_val);
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|
|
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} /* End of child. */
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else {
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/*
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|
* The fork system call failed.
|
|
*/
|
|
sprintf(mesg,
|
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"Fork system call failed. Errno: %d, Error message: %s",
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errno,strerror(errno));
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tst_resm(TBROK,mesg);
|
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tst_resm(TBROK,mesg);
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close(fd1[0]);
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close(fd1[1]);
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return;
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}
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|
|
} /* End of do_test. */
|
|
|
|
/***********************************************************************
|
|
* sigdfl_test - test for attempt to set SIGKILL to default
|
|
***********************************************************************/
|
|
void
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sigdfl_test()
|
|
{
|
|
/*
|
|
* Try to set SIGKILL to default and check the return values.
|
|
*/
|
|
errno=-4;
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|
|
|
Tret=(long)signal(SIGKILL,SIG_DFL);
|
|
TEST_RETURN=Tret;
|
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TEST_ERRNO=errno;
|
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|
|
|
|
if ( (SIG_PF)TEST_RETURN == SIG_ERR ) {
|
|
if ( STD_FUNCTIONAL_TEST ) {
|
|
if ( TEST_ERRNO != EINVAL ) {
|
|
sprintf(mesg,
|
|
"signal(SIGKILL,SIG_DFL) ret:%d, errno:%d expected ret:-1, errno:%d",
|
|
TEST_RETURN, TEST_ERRNO, EINVAL);
|
|
tst_resm(TFAIL, mesg);
|
|
}
|
|
else {
|
|
sprintf(mesg,
|
|
"signal(SIGKILL,SIG_DFL) ret:%d, errno:%d as expected.",
|
|
TEST_RETURN, TEST_ERRNO);
|
|
tst_resm(TPASS, mesg);
|
|
}
|
|
}
|
|
else
|
|
Tst_count++;
|
|
}
|
|
else {
|
|
sprintf(mesg,
|
|
"signal(SIGKILL,SIG_DFL) ret:%d, errno:%d expected ret:-1, errno:%d",
|
|
TEST_RETURN, TEST_ERRNO, EINVAL);
|
|
tst_resm(TFAIL, mesg);
|
|
}
|
|
|
|
} /* End of sigdfl_test. */
|
|
|
|
/***************************************************************
|
|
* setup() - performs all ONE TIME setup for this test.
|
|
***************************************************************/
|
|
void
|
|
setup()
|
|
{
|
|
/* capture signals */
|
|
tst_sig(FORK, DEF_HANDLER, cleanup);
|
|
|
|
/* make and change to a temporary directory */
|
|
tst_tmpdir();
|
|
|
|
/* Pause if that option was specified */
|
|
TEST_PAUSE;
|
|
|
|
} /* End setup() */
|
|
|
|
/***************************************************************
|
|
* cleanup() - performs all ONE TIME cleanup for this test at
|
|
* completion or premature exit.
|
|
***************************************************************/
|
|
void
|
|
cleanup()
|
|
{
|
|
|
|
/*
|
|
* print timing stats if that option was specified.
|
|
* print errno log if that option was specified.
|
|
*/
|
|
|
|
TEST_CLEANUP;
|
|
|
|
/*
|
|
* remove the temporary directory and exit with
|
|
* return code appropriate for results
|
|
*/
|
|
|
|
tst_rmdir();
|
|
|
|
tst_exit();
|
|
|
|
} /* End cleanup() */
|
|
|
|
/***********************************************************************
|
|
* Signal handler routine that used by the parent to handler
|
|
* a time out situation. It will attempt to kill the child and
|
|
* call cleanup.
|
|
***********************************************************************/
|
|
void
|
|
p_timeout_handler()
|
|
{
|
|
kill(Pid, SIGKILL);
|
|
cleanup();
|
|
}
|
|
|
|
/***********************************************************************
|
|
* Signal handler routine that used by the child to handle
|
|
* a time out situation. It will set a global varaible and return
|
|
* if called.
|
|
***********************************************************************/
|
|
void
|
|
c_timeout_handler()
|
|
{
|
|
exit_val = TIMED_OUT;
|
|
return;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* This signal handling routine will set a global variable and return
|
|
* if called.
|
|
***********************************************************************/
|
|
void
|
|
catchsig()
|
|
{
|
|
exit_val = SIG_CAUGHT;
|
|
return;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* Update timing information
|
|
***********************************************************************/
|
|
void
|
|
update_timings(atblock)
|
|
struct tblock atblock;
|
|
{
|
|
tblock.tb_max += atblock.tb_max;
|
|
tblock.tb_min += atblock.tb_min;
|
|
tblock.tb_total += atblock.tb_total;
|
|
tblock.tb_count += atblock.tb_count;
|
|
}
|