Merge branch 'devel-kerneloops'

1 files changed, 175 insertions, 9 deletions

diff --git a/lib/Plugins/Kerneloops.cpp b/lib/Plugins/Kerneloops.cpp
index 07c8e06..5d041e0 100644
--- a/lib/Plugins/Kerneloops.cpp
+++ b/lib/Plugins/Kerneloops.cpp
@@ -1,7 +1,8 @@
 /*
+ * Copyright 2007, Intel Corporation
  * Copyright 2009, Red Hat Inc.
  *
- * This file is part of %TBD%
+ * This file is part of Abrt.
  *
  * This program file is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -20,24 +21,46 @@
  *
  * Authors:
  *      Anton Arapov <anton@redhat.com>
+ *      Arjan van de Ven <arjan@linux.intel.com>
  */
 
+#include "Kerneloops.h"
+#include "KerneloopsSysLog.h"
 #include "DebugDump.h"
-#include "DynamicLibrary.h"
+#include "Settings.h"
 
-#include <ctype.h>
 #include <sstream>
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <limits.h>
+#include <sys/prctl.h>
+#include <sys/stat.h>
+#include <asm/unistd.h>
 
-#include "Kerneloops.h"
-#include "KerneloopsDmesg.h"
+#define MAX(A,B) ((A) > (B) ? (A) : (B))
+
+CAnalyzerKerneloops::CAnalyzerKerneloops() :
+	m_sSysLogFile("/var/log/messages")
+{}
+
+void CAnalyzerKerneloops::WriteSysLog(int m_nCount)
+{
+	if (m_nCount > 0) {
+		openlog("abrt", 0, LOG_KERN);
+		syslog(LOG_WARNING, "Kerneloops: Reported %i kernel oopses to Abrt", m_nCount);
+		closelog();
+	}
+}
 
 std::string CAnalyzerKerneloops::GetLocalUUID(const std::string& pDebugDumpDir)
 {
 	std::string m_sOops;
 	std::stringstream m_sHash;
-	CDebugDump dd;
-	dd.Open(pDebugDumpDir);
-	dd.LoadText(FILENAME_TEXTDATA1, m_sOops);
+	CDebugDump m_pDebugDump;
+	m_pDebugDump.Open(pDebugDumpDir);
+	m_pDebugDump.LoadText(FILENAME_TEXTDATA1, m_sOops);
 
 	/* An algorithm proposed by Donald E. Knuth in The Art Of Computer
 	 * Programming Volume 3, under the topic of sorting and search
@@ -58,7 +81,150 @@ std::string CAnalyzerKerneloops::GetGlobalUUID(const std::string& pDebugDumpDir)
 	return GetLocalUUID(pDebugDumpDir);
 }
 
+void CAnalyzerKerneloops::Report()
+{
+	CDebugDump m_pDebugDump;
+	char m_sPath[PATH_MAX];
+	std::list<COops> m_pOopsList;
+
+	time_t t = time(NULL);
+	if (((time_t) -1) == t)
+	{
+		fprintf(stderr, "Kerneloops: cannot get local time.\n");
+		perror("");
+		// TODO: throw -4
+	}
+
+	m_pOopsList = m_pSysLog.GetOopsList();
+	m_pSysLog.ClearOopsList();
+	while (!m_pOopsList.empty())
+	{
+		snprintf(m_sPath, sizeof(m_sPath), "%s/kerneloops-%d-%d", DEBUG_DUMPS_DIR, t, m_pOopsList.size());
+
+		COops m_pOops;
+		m_pOops = m_pOopsList.back();
+
+		try
+		{
+			m_pDebugDump.Create(m_sPath);
+			m_pDebugDump.SaveText(FILENAME_ANALYZER, "Kerneloops");
+			m_pDebugDump.SaveText(FILENAME_UID, "0");
+			m_pDebugDump.SaveText(FILENAME_EXECUTABLE, "kernel");
+			m_pDebugDump.SaveText(FILENAME_KERNEL, m_pOops.m_sVersion);
+			m_pDebugDump.SaveText(FILENAME_PACKAGE, "not_applicable");
+			m_pDebugDump.SaveText(FILENAME_TEXTDATA1, m_pOops.m_sData);
+			m_pDebugDump.Close();
+		}
+		catch (std::string sError)
+		{
+			fprintf(stderr, "Kerneloops: %s\n", sError.c_str());
+			// TODO: throw -2
+		}
+		m_pOopsList.pop_back();
+	}
+}
+
 void CAnalyzerKerneloops::Init()
 {
-	scan_logs();
+	/* hack: release Init() */
+	pid_t pid = fork();
+	if (pid)
+		return;
+	// TODO: throw if we can't fork()
+
+	sched_yield();
+
+#ifdef PR_SET_TIMERSLACK
+	/*
+	 * Signal the kernel that we're not timing critical
+	 */
+	prctl(PR_SET_TIMERSLACK,1000*1000*1000, 0, 0, 0);
+#endif
+
+	/* we scan dmesg before /var/log/messages; dmesg is a more accurate source normally */
+	ScanDmesg();
+	/* during boot... don't go too fast and slow the system down */
+	sleep(10);
+	ScanSysLogFile(m_sSysLogFile.c_str(), 1);
+
+	while(1) {
+		sleep(10);
+		ScanDmesg();
+	}
+}
+
+void CAnalyzerKerneloops::ScanDmesg()
+{
+	int m_nFoundOopses;
+	char *buffer;
+
+	buffer = (char*)calloc(getpagesize()+1, 1);
+
+	syscall(__NR_syslog, 3, buffer, getpagesize());
+	m_nFoundOopses = m_pSysLog.ExtractOops(buffer, strlen(buffer), 0);
+	free(buffer);
+
+	if (m_nFoundOopses > 0)
+		Report();
+}
+
+void CAnalyzerKerneloops::ScanSysLogFile(const char *filename, int issyslog)
+{
+	char *buffer;
+	struct stat statb;
+	FILE *file;
+	int ret;
+	int m_nFoundOopses;
+	size_t buflen;
+
+	memset(&statb, 0, sizeof(statb));
+
+	ret = stat(filename, &statb);
+
+	if (statb.st_size < 1 || ret != 0)
+		return;
+
+	/*
+	 * in theory there's a race here, since someone could spew
+	 * to /var/log/messages before we read it in... we try to
+	 * deal with it by reading at most 1023 bytes extra. If there's
+	 * more than that.. any oops will be in dmesg anyway.
+	 * Do not try to allocate an absurt amount of memory; ignore
+	 * older log messages because they are unlikely to have
+	 * sufficiently recent data to be useful.  32MB is more
+	 * than enough; it's not worth looping through more log
+	 * if the log is larger than that.
+	 */
+	buflen = MAX(statb.st_size+1024, 32*1024*1024);
+	buffer = (char*)calloc(buflen, 1);
+	assert(buffer != NULL);
+
+	file = fopen(filename, "rm");
+	if (!file) {
+		free(buffer);
+		return;
+	}
+	fseek(file, -buflen, SEEK_END);
+	ret = fread(buffer, 1, buflen-1, file);
+	fclose(file);
+
+	if (ret > 0)
+		m_nFoundOopses = m_pSysLog.ExtractOops(buffer, buflen-1, issyslog);
+	free(buffer);
+
+	if (m_nFoundOopses > 0) {
+		Report();
+		WriteSysLog(m_nFoundOopses);
+	}
+}
+
+void CAnalyzerKerneloops::LoadSettings(const std::string& pPath)
+{
+	map_settings_t settings;
+	load_settings(pPath, settings);
+
+	if (settings.find("SysLogFile")!= settings.end())
+	{
+		m_sSysLogFile = settings["SysLogFile"];
+	}
 }