OK. Thanks. I will test this later and let you know. Regards-- Subrata
On Mon, 2009-10-26 at 12:33 -0700, Garrett Cooper wrote: > On Mon, Oct 26, 2009 at 10:02 AM, Subrata Modak > <[email protected]> wrote: > > On Wed, 2009-10-21 at 23:14 -0700, Garrett Cooper wrote: > >> The following calls ptrace(PTRACE_TRACEME, 0) for all signals and > >> validates that all signals apart from SIGKILL are properly intercepted > >> and WIFSTOPPED remains true, and SIGKILL is properly treated as > >> WIFSIGNALED() && WTERMSIG() returns SIGKILL. > >> > >> 1. This test app helped unroot another issue with our custom Linux > >> platform here at Cisco. > >> 2. This test application does function properly on a Gentoo Linux > >> based x86_64 / 2.6.30 kernel however, so it's an issue with our OS > >> platform. > >> > >> I will add this application to testcases/kernel/syscalls/ptrace, > >> if someone else sees the value in it. I agree that additional error > >> checking could be added for the calls to kill(2)... I just whipped > >> this up in 45 mins after finding this strange behavior on our > >> platform. > >> > >> Signed-off-by: Garrett Cooper <[email protected]> > > > > Just a quick build and test. It fails on my 32 bit and 64 bit X > > machines: > > I looked at it again this weekend, and my criterion for kill (..., 0) > was incorrect. The newer version passes, and tests correct criterion, > as per the manpage: > > ptrace05 23 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 23) > ptrace05 24 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 24) > ptrace05 25 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 25) > ptrace05 26 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 26) > ptrace05 27 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 27) > ptrace05 28 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 28) > ptrace05 29 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 29) > ptrace05 30 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 30) > ptrace05 31 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 31) > ptrace05 32 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 32) > ptrace05 33 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 33) > ptrace05 34 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 34) > ptrace05 35 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 35) > ptrace05 36 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 36) > ptrace05 37 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 37) > ptrace05 38 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 38) > ptrace05 39 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 39) > ptrace05 40 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 40) > ptrace05 41 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 41) > ptrace05 42 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 42) > ptrace05 43 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 43) > ptrace05 44 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 44) > ptrace05 45 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 45) > ptrace05 46 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 46) > ptrace05 47 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 47) > ptrace05 48 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 48) > ptrace05 49 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 49) > ptrace05 50 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 50) > ptrace05 51 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 51) > ptrace05 52 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 52) > ptrace05 53 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 53) > ptrace05 54 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 54) > ptrace05 55 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 55) > ptrace05 56 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 56) > ptrace05 57 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 57) > ptrace05 58 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 58) > ptrace05 59 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 59) > ptrace05 60 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 60) > ptrace05 61 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 61) > ptrace05 62 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 62) > ptrace05 63 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 63) > ptrace05 64 TPASS : Stopped as expected > ptrace05 0 TINFO : [child] Sending kill(.., 64) > ptrace05 65 TPASS : Stopped as expected > gcoo...@orangebox /scratch/ltp-dev2/ltp $ echo $? > 0 > > /* > > ****************************************************************************** > * > * ptrace05 - an app which ptraces itself as per arbitrarily > specified signals, > * over a user specified range. > * > * Copyright (C) 2009, Garrett Cooper > * > * This program is free software; you can redistribute it and/or modify > * it under the terms of the GNU General Public License as published by > * the Free Software Foundation; either version 2 of the License, or > * (at your option) any later version. > * > * This program is distributed in the hope that it will be useful, > * but WITHOUT ANY WARRANTY; without even the implied warranty of > * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > * GNU General Public License for more details. > * > * You should have received a copy of the GNU General Public License along > * with this program; if not, write to the Free Software Foundation, Inc., > * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. > * > > ****************************************************************************** > */ > > #include <sys/ptrace.h> > #include <sys/types.h> > #include <sys/wait.h> > #include <signal.h> > #include <errno.h> > #include <libgen.h> > #include <math.h> > #include <stdlib.h> > #include <stdio.h> > #include <string.h> > #include <unistd.h> > #include "test.h" > #include "usctest.h" > > char *TCID = "ptrace05"; > int TST_TOTAL = 0; > > int usage(const char*); > > int > usage(const char *argv0) > { > fprintf(stderr, "usage: %s [start-signum] [end-signum]\n", argv0); > return 1; > } > > int > main(int argc, char **argv) > { > > int end_signum = -1; > int signum; > int start_signum = -1; > int status; > > pid_t child; > > /* Parse the CLI args appropriately. */ > switch (argc) { > case 3: > end_signum = (int) strtol((const char*) *(argv+2), NULL, 10); > /* Parse the signal value. */ > if (end_signum == 0 && errno != 0) { > tst_resm(TBROK, "argument (%s) isn't a valid number.\n", > *(argv+2)); > tst_exit(); > } > /* FALLTHROUGH */ > case 2: > start_signum = (int) strtol((const char*) *(argv+1), NULL, 10); > /* Parse the signal value. */ > if (end_signum == 0 && errno != 0) { > tst_resm(TBROK, "argument (%s) isn't a valid number.\n", > *(argv+1) ); > tst_exit(); > } > break; > case 1: > /* Do nothing. */ > break; > default: > return usage(basename(*argv)); > } > > if (start_signum == -1) { > start_signum = 0; > } > if (end_signum == -1) { > end_signum = SIGRTMAX; > } > > for (signum = start_signum; signum <= end_signum; signum++) { > > switch (child = fork()) { > case -1: > tst_resm(TBROK | TERRNO, "Failed to fork properly."); > break; > case 0: > > if (ptrace(PTRACE_TRACEME, 0, NULL, NULL) != -1) { > tst_resm(TINFO, "[child] Sending kill(.., %d)", > signum); > if (kill(getpid(), signum) < 0) { > tst_resm(TINFO | TERRNO, > "[child] kill(.., %d) failed.", > signum); > } > } else { > > /* > * This won't increment the TST_COUNT var. > * properly, but it'll show up as a failure > * nonetheless. > */ > tst_resm(TFAIL | TERRNO, > "Failed to ptrace(PTRACE_TRACEME, ...) " > "properly"); > > } > /* Shouldn't get here if signum == 0. */ > exit((signum == 0 ? 0 : 2)); > break; > > default: > > waitpid(child, &status, 0); > > switch(signum) { > case 0: > if (WIFEXITED(status) && WEXITSTATUS(status) == > 0) { > tst_resm(TPASS, "kill(.., 0) exited " > "with 0, as expected."); > } else { > tst_resm(TFAIL, "kill(.., 0) didn't > exit " > "with 0."); > } > break; > case SIGKILL: > if (WIFSIGNALED(status)) { > /* SIGKILL must be uncatchable. */ > if (WTERMSIG(status) == SIGKILL) { > tst_resm(TPASS, > "Killed with SIGKILL, " > "as expected."); > } else { > tst_resm(TPASS, > "Didn't die with " > "SIGKILL (?!) "); > } > } else if (WIFEXITED(status)) { > tst_resm(TFAIL, > "Exited unexpectedly instead " > "of dying with SIGKILL."); > } else if (WIFSTOPPED(status)) { > tst_resm(TFAIL, > "Stopped instead of dying " > "with SIGKILL."); > } > break; > /* All other processes should be stopped. */ > default: > if (WIFSTOPPED(status)) { > tst_resm(TPASS, "Stopped as expected"); > } else { > tst_resm(TFAIL, "Didn't stop as " > "expected."); > if (kill (child, 0)) { > tst_resm(TINFO, > "Is still alive!?"); > } else if (WIFEXITED(status)) { > tst_resm(TINFO, > "Exited normally"); > } else if (WIFSIGNALED(status)) { > tst_resm(TINFO, > "Was signaled with " > "signum=%d", > WTERMSIG(status)); > } > > } > > break; > > } > > } > /* Make sure the child dies a quick and painless death ... */ > kill(child, 9); > > } > > tst_exit(); > > } ------------------------------------------------------------------------------ Come build with us! 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