Dump backtrace in case of SIGABRT, SIGSEGV YAZ-787 yaz-787-2
authorAdam Dickmeiss <adam@indexdata.dk>
Mon, 17 Nov 2014 14:17:42 +0000 (15:17 +0100)
committerAdam Dickmeiss <adam@indexdata.dk>
Mon, 24 Nov 2014 14:01:49 +0000 (15:01 +0100)
New function yaz_enable_panic_backtrace which enables backtrace
handler for current process. The handler will call backtrace always,
then gdb to provide as much detail as possible.

configure.ac
include/yaz/Makefile.am
include/yaz/backtrace.h [new file with mode: 0644]
src/Makefile.am
src/backtrace.c [new file with mode: 0644]
win/makefile
ztest/ztest.c

index 7ceddfe..e1623bb 100644 (file)
@@ -26,7 +26,7 @@ dnl
 YAZ_DOC
 dnl
 dnl
-AC_CHECK_HEADERS([dirent.h fnmatch.h wchar.h locale.h langinfo.h pwd.h unistd.h sys/select.h sys/socket.h sys/stat.h sys/time.h sys/times.h sys/types.h sys/un.h sys/wait.h sys/prctl.h netdb.h arpa/inet.h netinet/tcp.h netinet/in_systm.h],[],[],[])
+AC_CHECK_HEADERS([dirent.h fnmatch.h wchar.h locale.h langinfo.h pwd.h unistd.h sys/select.h sys/socket.h sys/stat.h sys/time.h sys/times.h sys/types.h sys/un.h sys/wait.h sys/prctl.h netdb.h arpa/inet.h netinet/tcp.h netinet/in_systm.h execinfo.h],[],[],[])
 AC_CHECK_HEADERS([net/if.h netinet/in.h netinet/if_ether.h],[],[],[
  #if HAVE_SYS_TYPES_H
  #include <sys/types.h>
index 0c5ab8a..21d55dc 100644 (file)
@@ -3,7 +3,7 @@
 
 noinst_HEADERS = icu_I18N.h
 
-pkginclude_HEADERS= backend.h base64.h \
+pkginclude_HEADERS= backend.h backtrace.h base64.h \
  ccl.h ccl_xml.h cookie.h cql.h rpn2cql.h rpn2solr.h \
  solr.h comstack.h \
  diagbib1.h diagsrw.h diagsru_update.h sortspec.h log.h logrpn.h marcdisp.h \
diff --git a/include/yaz/backtrace.h b/include/yaz/backtrace.h
new file mode 100644 (file)
index 0000000..8469c3f
--- /dev/null
@@ -0,0 +1,57 @@
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) Index Data.
+ * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Index Data nor the names of its contributors
+ *       may be used to endorse or promote products derived from this
+ *       software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file
+ * \brief backtrace handling
+ */
+#ifndef YAZ_BACKTRACE_H
+#define YAZ_BACKTRACE_H
+
+#include <stddef.h>
+#include <yaz/yconfig.h>
+
+YAZ_BEGIN_CDECL
+
+/** \brief enables backtrace when SIGSEGV/SIGABRT/.. signal is received 
+    \param progname name of executable that we run
+*/
+
+YAZ_EXPORT void yaz_enable_panic_backtrace(const char *progname);
+
+YAZ_END_CDECL
+
+#endif
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+
index 3f431f0..de50bca 100644 (file)
@@ -111,7 +111,7 @@ libyaz_la_SOURCES= $(GEN_FILES) \
   iconv_encode_marc8.c iconv_encode_iso_8859_1.c iconv_encode_wchar.c \
   iconv_decode_marc8.c iconv_decode_iso5426.c iconv_decode_danmarc.c sc.c \
   json.c xml_include.c file_glob.c dirent.c mutex-p.h mutex.c condvar.c \
-  thread_id.c gettimeofday.c thread_create.c spipe.c url.c
+  thread_id.c gettimeofday.c thread_create.c spipe.c url.c backtrace.c
 
 libyaz_la_LDFLAGS=-version-info $(YAZ_VERSION_INFO)
 
diff --git a/src/backtrace.c b/src/backtrace.c
new file mode 100644 (file)
index 0000000..567e55f
--- /dev/null
@@ -0,0 +1,180 @@
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) Index Data
+ * See the file LICENSE for details.
+ */
+
+/**
+ * \file
+ * \brief get information for abnormal terminated, crashes, etc
+ */
+
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <stdlib.h>
+#if HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+#include <yaz/log.h>
+#include <yaz/snprintf.h>
+#include <yaz/backtrace.h>
+#include <yaz/nmem.h>
+
+#if HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#if HAVE_EXECINFO_H
+#include <execinfo.h>
+#endif
+
+#define BACKTRACE_SZ 100
+
+static char static_progname[256];
+
+static void yaz_invoke_backtrace(char *buf, int buf_sz)
+{
+    FILE *file = yaz_log_file();
+    int fd = fileno(file);
+#if HAVE_EXECINFO_H
+    pid_t pid;
+    int fds[2];
+    void *backtrace_info[BACKTRACE_SZ];
+    int sz = BACKTRACE_SZ;
+
+    write(fd, buf, strlen(buf));
+    sz = backtrace(backtrace_info, sz);
+    backtrace_symbols_fd(backtrace_info, sz, fd);
+
+    pipe(fds);
+    pid = fork();
+    if (pid == (pid_t) (-1))
+    {   /* error */
+        const char *cp = "backtrace: fork failure";
+        write(fd, cp, strlen(cp));
+    }
+    else if (pid == 0)
+    {   /* child */
+        char *arg[20];
+        int arg_no = 0;
+        char pidstr[40];
+        const char *cp = "backtrace: could not exec gdb";
+
+        close(fds[1]);
+        close(0);
+        dup(fds[0]);
+        if (fd != 1)
+        {
+            close(1);
+            dup(fd);
+        }
+        if (fd != 2)
+        {
+            close(2);
+            dup(fd);
+        }
+        arg[arg_no++] = "/usr/bin/gdb";
+        arg[arg_no++] = "-n";
+        arg[arg_no++] = "-batch";
+        arg[arg_no++] = "-ex";
+        arg[arg_no++] = "info threads";
+        arg[arg_no++] = "-ex";
+        arg[arg_no++] = "thread apply all bt";
+        arg[arg_no++] = static_progname;
+        sprintf(pidstr, NMEM_INT_PRINTF, (nmem_int_t) getppid());
+        arg[arg_no++] = pidstr;
+        arg[arg_no] = 0;
+        execv(arg[0], arg);
+        write(2, cp, strlen(cp)); /* exec failure if we make it this far */
+        _exit(1);
+    }
+    else
+    {  /* parent */
+        int sec = 0;
+
+        close(fds[0]);
+        write(fds[1], "quit\n", 5);
+        while (1)
+        {
+            int status;
+            pid_t s = waitpid(pid, &status, WNOHANG);
+            if (s != 0)
+                break;
+            if (sec == 9)
+                kill(pid, SIGTERM);
+            if (sec == 10)
+                kill(pid, SIGKILL);
+            if (sec == 11)
+                break;
+            if (sec > 3)
+                write(fds[1], "quit\n", 5);
+            sleep(1);
+            sec++;
+        }
+        close(fds[1]);
+    }
+#else
+    strcat(buf, "no backtrace support (execinfo.h not found)\n");
+    write(fd, buf, strlen(buf));
+#endif
+}
+
+static void yaz_panic_sig_handler(int sig)
+{
+    char buf[512];
+
+    signal(SIGABRT, SIG_DFL);
+    strcpy(buf, "\nYAZ panic received ");
+    switch (sig)
+    {
+    case SIGSEGV:
+        strcat(buf, "SIGSEGV");
+        break;
+    case SIGABRT:
+        strcat(buf, "SIGABRT");
+        break;
+    case SIGFPE:
+        strcat(buf, "SIGFPE");
+        break;
+    case SIGBUS:
+        strcat(buf, "SIGBUS");
+        break;
+    default:
+        yaz_snprintf(buf + strlen(buf), sizeof buf, "signo=%d", sig);
+        break;
+    }
+    yaz_snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf) - 1,
+                 " PID=" NMEM_INT_PRINTF "\n", (nmem_int_t) getpid());
+    yaz_invoke_backtrace(buf, sizeof buf);
+    abort();
+}
+
+void yaz_enable_panic_backtrace(const char *progname)
+{
+    strncpy(static_progname, progname, sizeof(static_progname) - 1);
+    static_progname[sizeof(static_progname) - 1] = '\0';
+#if HAVE_EXECINFO_H
+    signal(SIGABRT, yaz_panic_sig_handler);
+    signal(SIGSEGV, yaz_panic_sig_handler);
+    signal(SIGFPE, yaz_panic_sig_handler);
+    signal(SIGBUS, yaz_panic_sig_handler);
+#endif
+}
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+
index 9d9395d..643a06a 100644 (file)
@@ -555,7 +555,8 @@ MISC_OBJS= \
    $(OBJDIR)\file_glob.obj \
    $(OBJDIR)\thread_id.obj \
    $(OBJDIR)\dirent.obj \
-   $(OBJDIR)\url.obj
+   $(OBJDIR)\url.obj \
+   $(OBJDIR)\backtrace.obj
 
 Z3950_OBJS= \
    $(OBJDIR)\z-date.obj\
index c938c71..cc7736d 100644 (file)
@@ -33,6 +33,7 @@
 #include <yaz/diagbib1.h>
 #include <yaz/otherinfo.h>
 #include <yaz/facet.h>
+#include <yaz/backtrace.h>
 
 #include "ztest.h"
 
@@ -1158,6 +1159,8 @@ void bend_close(void *handle)
 
 int main(int argc, char **argv)
 {
+    yaz_enable_panic_backtrace(argv[0]);
+
     return statserv_main(argc, argv, bend_init, bend_close);
 }
 /*