Adding upstream version 1.47.0.upstream/1.47.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 446 insertions, 0 deletions

diff --git a/e2fsck/sigcatcher.c b/e2fsck/sigcatcher.c
new file mode 100644
index 0000000..a9d3b7f
--- /dev/null
+++ b/e2fsck/sigcatcher.c
@@ -0,0 +1,446 @@
+/*
+ * sigcatcher.c --- print a backtrace on a SIGSEGV, et. al
+ *
+ * Copyright (C) 2011 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#ifdef HAVE_EXECINFO_H
+#include <execinfo.h>
+#endif
+
+#include "e2fsck.h"
+
+struct str_table {
+	int	num;
+	const char	*name;
+};
+
+#define DEFINE_ENTRY(SYM)	{ SYM, #SYM },
+#define END_TABLE		{ 0, 0 }
+
+static struct str_table sig_table[] = {
+#ifdef SIGHUP
+	DEFINE_ENTRY(SIGHUP)
+#endif
+#ifdef SIGINT
+	DEFINE_ENTRY(SIGINT)
+#endif
+#ifdef SIGQUIT
+	DEFINE_ENTRY(SIGQUIT)
+#endif
+#ifdef SIGILL
+	DEFINE_ENTRY(SIGILL)
+#endif
+#ifdef SIGTRAP
+	DEFINE_ENTRY(SIGTRAP)
+#endif
+#ifdef SIGABRT
+	DEFINE_ENTRY(SIGABRT)
+#endif
+#ifdef SIGIOT
+	DEFINE_ENTRY(SIGIOT)
+#endif
+#ifdef SIGBUS
+	DEFINE_ENTRY(SIGBUS)
+#endif
+#ifdef SIGFPE
+	DEFINE_ENTRY(SIGFPE)
+#endif
+#ifdef SIGKILL
+	DEFINE_ENTRY(SIGKILL)
+#endif
+#ifdef SIGUSR1
+	DEFINE_ENTRY(SIGUSR1)
+#endif
+#ifdef SIGSEGV
+	DEFINE_ENTRY(SIGSEGV)
+#endif
+#ifdef SIGUSR2
+	DEFINE_ENTRY(SIGUSR2)
+#endif
+#ifdef SIGPIPE
+	DEFINE_ENTRY(SIGPIPE)
+#endif
+#ifdef SIGALRM
+	DEFINE_ENTRY(SIGALRM)
+#endif
+#ifdef SIGTERM
+	DEFINE_ENTRY(SIGTERM)
+#endif
+#ifdef SIGSTKFLT
+	DEFINE_ENTRY(SIGSTKFLT)
+#endif
+#ifdef SIGCHLD
+	DEFINE_ENTRY(SIGCHLD)
+#endif
+#ifdef SIGCONT
+	DEFINE_ENTRY(SIGCONT)
+#endif
+#ifdef SIGSTOP
+	DEFINE_ENTRY(SIGSTOP)
+#endif
+#ifdef SIGTSTP
+	DEFINE_ENTRY(SIGTSTP)
+#endif
+#ifdef SIGTTIN
+	DEFINE_ENTRY(SIGTTIN)
+#endif
+#ifdef SIGTTOU
+	DEFINE_ENTRY(SIGTTOU)
+#endif
+#ifdef SIGURG
+	DEFINE_ENTRY(SIGURG)
+#endif
+#ifdef SIGXCPU
+	DEFINE_ENTRY(SIGXCPU)
+#endif
+#ifdef SIGXFSZ
+	DEFINE_ENTRY(SIGXFSZ)
+#endif
+#ifdef SIGVTALRM
+	DEFINE_ENTRY(SIGVTALRM)
+#endif
+#ifdef SIGPROF
+	DEFINE_ENTRY(SIGPROF)
+#endif
+#ifdef SIGWINCH
+	DEFINE_ENTRY(SIGWINCH)
+#endif
+#ifdef SIGIO
+	DEFINE_ENTRY(SIGIO)
+#endif
+#ifdef SIGPOLL
+	DEFINE_ENTRY(SIGPOLL)
+#endif
+#ifdef SIGPWR
+	DEFINE_ENTRY(SIGPWR)
+#endif
+#ifdef SIGSYS
+	DEFINE_ENTRY(SIGSYS)
+#endif
+	END_TABLE
+};
+
+static struct str_table generic_code_table[] = {
+#ifdef SI_ASYNCNL
+	DEFINE_ENTRY(SI_ASYNCNL)
+#endif
+#ifdef SI_TKILL
+	DEFINE_ENTRY(SI_TKILL)
+#endif
+#ifdef SI_SIGIO
+	DEFINE_ENTRY(SI_SIGIO)
+#endif
+#ifdef SI_ASYNCIO
+	DEFINE_ENTRY(SI_ASYNCIO)
+#endif
+#ifdef SI_MESGQ
+	DEFINE_ENTRY(SI_MESGQ)
+#endif
+#ifdef SI_TIMER
+	DEFINE_ENTRY(SI_TIMER)
+#endif
+#ifdef SI_QUEUE
+	DEFINE_ENTRY(SI_QUEUE)
+#endif
+#ifdef SI_USER
+	DEFINE_ENTRY(SI_USER)
+#endif
+#ifdef SI_KERNEL
+	DEFINE_ENTRY(SI_KERNEL)
+#endif
+	END_TABLE
+};
+
+static struct str_table sigill_code_table[] = {
+#ifdef ILL_ILLOPC
+	DEFINE_ENTRY(ILL_ILLOPC)
+#endif
+#ifdef ILL_ILLOPN
+	DEFINE_ENTRY(ILL_ILLOPN)
+#endif
+#ifdef ILL_ILLADR
+	DEFINE_ENTRY(ILL_ILLADR)
+#endif
+#ifdef ILL_ILLTRP
+	DEFINE_ENTRY(ILL_ILLTRP)
+#endif
+#ifdef ILL_PRVOPC
+	DEFINE_ENTRY(ILL_PRVOPC)
+#endif
+#ifdef ILL_PRVREG
+	DEFINE_ENTRY(ILL_PRVREG)
+#endif
+#ifdef ILL_COPROC
+	DEFINE_ENTRY(ILL_COPROC)
+#endif
+#ifdef ILL_BADSTK
+	DEFINE_ENTRY(ILL_BADSTK)
+#endif
+#ifdef BUS_ADRALN
+	DEFINE_ENTRY(BUS_ADRALN)
+#endif
+#ifdef BUS_ADRERR
+	DEFINE_ENTRY(BUS_ADRERR)
+#endif
+#ifdef BUS_OBJERR
+	DEFINE_ENTRY(BUS_OBJERR)
+#endif
+	END_TABLE
+};
+
+static struct str_table sigfpe_code_table[] = {
+#ifdef FPE_INTDIV
+	DEFINE_ENTRY(FPE_INTDIV)
+#endif
+#ifdef FPE_INTOVF
+	DEFINE_ENTRY(FPE_INTOVF)
+#endif
+#ifdef FPE_FLTDIV
+	DEFINE_ENTRY(FPE_FLTDIV)
+#endif
+#ifdef FPE_FLTOVF
+	DEFINE_ENTRY(FPE_FLTOVF)
+#endif
+#ifdef FPE_FLTUND
+	DEFINE_ENTRY(FPE_FLTUND)
+#endif
+#ifdef FPE_FLTRES
+	DEFINE_ENTRY(FPE_FLTRES)
+#endif
+#ifdef FPE_FLTINV
+	DEFINE_ENTRY(FPE_FLTINV)
+#endif
+#ifdef FPE_FLTSUB
+	DEFINE_ENTRY(FPE_FLTSUB)
+#endif
+	END_TABLE
+};
+
+static struct str_table sigsegv_code_table[] = {
+#ifdef SEGV_MAPERR
+	DEFINE_ENTRY(SEGV_MAPERR)
+#endif
+#ifdef SEGV_ACCERR
+	DEFINE_ENTRY(SEGV_ACCERR)
+#endif
+	END_TABLE
+};
+
+
+static struct str_table sigbus_code_table[] = {
+#ifdef BUS_ADRALN
+	DEFINE_ENTRY(BUS_ADRALN)
+#endif
+#ifdef BUS_ADRERR
+	DEFINE_ENTRY(BUS_ADRERR)
+#endif
+#ifdef BUS_OBJERR
+	DEFINE_ENTRY(BUS_OBJERR)
+#endif
+	END_TABLE
+};
+
+#if 0 /* should this be hooked in somewhere? */
+static struct str_table sigstrap_code_table[] = {
+#ifdef TRAP_BRKPT
+	DEFINE_ENTRY(TRAP_BRKPT)
+#endif
+#ifdef TRAP_TRACE
+	DEFINE_ENTRY(TRAP_TRACE)
+#endif
+	END_TABLE
+};
+#endif
+
+static struct str_table sigcld_code_table[] = {
+#ifdef CLD_EXITED
+	DEFINE_ENTRY(CLD_EXITED)
+#endif
+#ifdef CLD_KILLED
+	DEFINE_ENTRY(CLD_KILLED)
+#endif
+#ifdef CLD_DUMPED
+	DEFINE_ENTRY(CLD_DUMPED)
+#endif
+#ifdef CLD_TRAPPED
+	DEFINE_ENTRY(CLD_TRAPPED)
+#endif
+#ifdef CLD_STOPPED
+	DEFINE_ENTRY(CLD_STOPPED)
+#endif
+#ifdef CLD_CONTINUED
+	DEFINE_ENTRY(CLD_CONTINUED)
+#endif
+	END_TABLE
+};
+
+#if 0 /* should this be hooked in somewhere? */
+static struct str_table sigpoll_code_table[] = {
+#ifdef POLL_IN
+	DEFINE_ENTRY(POLL_IN)
+#endif
+#ifdef POLL_OUT
+	DEFINE_ENTRY(POLL_OUT)
+#endif
+#ifdef POLL_MSG
+	DEFINE_ENTRY(POLL_MSG)
+#endif
+#ifdef POLL_ERR
+	DEFINE_ENTRY(POLL_ERR)
+#endif
+#ifdef POLL_PRI
+	DEFINE_ENTRY(POLL_PRI)
+#endif
+#ifdef POLL_HUP
+	DEFINE_ENTRY(POLL_HUP)
+#endif
+	END_TABLE
+};
+#endif
+
+static const char *lookup_table(int num, struct str_table *table)
+{
+	struct str_table *p;
+
+	for (p=table; p->name; p++)
+		if (num == p->num)
+			return(p->name);
+	return NULL;
+}
+
+static const char *lookup_table_fallback(int num, struct str_table *table)
+{
+	static char buf[32];
+	const char *ret = lookup_table(num, table);
+
+	if (ret)
+		return ret;
+	snprintf(buf, sizeof(buf), "%d", num);
+	buf[sizeof(buf)-1] = 0;
+	return buf;
+}
+
+static void die_signal_handler(int signum, siginfo_t *siginfo,
+			       void *context EXT2FS_ATTR((unused)))
+{
+       const char *cp;
+
+       fprintf(stderr, "Signal (%d) %s ", signum,
+	       lookup_table_fallback(signum, sig_table));
+       if (siginfo->si_code == SI_USER)
+	       fprintf(stderr, "(sent from pid %u) ", siginfo->si_pid);
+       cp = lookup_table(siginfo->si_code, generic_code_table);
+       if (cp)
+	       fprintf(stderr, "si_code=%s ", cp);
+       else if (signum == SIGILL)
+	       fprintf(stderr, "si_code=%s ",
+		       lookup_table_fallback(siginfo->si_code,
+					     sigill_code_table));
+       else if (signum == SIGFPE)
+	       fprintf(stderr, "si_code=%s ",
+		       lookup_table_fallback(siginfo->si_code,
+					     sigfpe_code_table));
+       else if (signum == SIGSEGV)
+	       fprintf(stderr, "si_code=%s ",
+		       lookup_table_fallback(siginfo->si_code,
+					     sigsegv_code_table));
+       else if (signum == SIGBUS)
+	       fprintf(stderr, "si_code=%s ",
+		       lookup_table_fallback(siginfo->si_code,
+					     sigbus_code_table));
+       else if (signum == SIGCHLD)
+	       fprintf(stderr, "si_code=%s ",
+		       lookup_table_fallback(siginfo->si_code,
+					     sigcld_code_table));
+       else
+	       fprintf(stderr, "si code=%d ", siginfo->si_code);
+       if ((siginfo->si_code != SI_USER) &&
+	   (signum == SIGILL || signum == SIGFPE ||
+	    signum == SIGSEGV || signum == SIGBUS))
+	       fprintf(stderr, "fault addr=%p", siginfo->si_addr);
+       fprintf(stderr, "\n");
+
+#if defined(HAVE_BACKTRACE) && !defined(DISABLE_BACKTRACE)
+       {
+	       void *stack_syms[32];
+	       int frames;
+
+	       frames = backtrace(stack_syms, 32);
+	       backtrace_symbols_fd(stack_syms, frames, 2);
+       }
+#endif
+       exit(FSCK_ERROR);
+}
+
+void sigcatcher_setup(void)
+{
+	struct sigaction	sa;
+	
+	memset(&sa, 0, sizeof(struct sigaction));
+	sa.sa_sigaction = die_signal_handler;
+	sa.sa_flags = SA_SIGINFO;
+
+	sigaction(SIGFPE, &sa, 0);
+	sigaction(SIGILL, &sa, 0);
+	sigaction(SIGBUS, &sa, 0);
+	sigaction(SIGSEGV, &sa, 0);
+	sigaction(SIGABRT, &sa, 0);
+}	
+
+
+#ifdef DEBUG
+#include <getopt.h>
+
+void usage(void)
+{
+	fprintf(stderr, "tst_sigcatcher: [-akfn]\n");
+	exit(1);
+}
+
+int main(int argc, char** argv)
+{
+	struct sigaction	sa;
+	char			*p = 0;
+	int 			i, c;
+	volatile		x=0;
+
+	memset(&sa, 0, sizeof(struct sigaction));
+	sa.sa_sigaction = die_signal_handler;
+	sa.sa_flags = SA_SIGINFO;
+	for (i=1; i < 31; i++)
+		sigaction(i, &sa, 0);
+
+	while ((c = getopt (argc, argv, "afkn")) != EOF)
+		switch (c) {
+		case 'a':
+			abort();
+			break;
+		case 'f':
+			printf("%d\n", 42/x);
+		case 'k':
+			kill(getpid(), SIGTERM);
+			break;
+		case 'n':
+			*p = 42;
+		default:
+			usage ();
+		}
+
+	printf("Sleeping for 10 seconds, send kill signal to pid %u...\n",
+	       getpid());
+	fflush(stdout);
+	sleep(10);
+	exit(0);
+}
+#endif