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/*
* @licence app begin@
* SPDX license identifier: MPL-2.0
*
* Copyright (C) 2011-2015, BMW AG
*
* This file is part of GENIVI Project DLT - Diagnostic Log and Trace.
*
* This Source Code Form is subject to the terms of the
* Mozilla Public License (MPL), v. 2.0.
* If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/.
*
* For further information see http://www.genivi.org/.
* @licence end@
*/
/*!
* \author Magneti Marelli http://www.magnetimarelli.com
* \author Lutz Helwing <lutz_helwing@mentor.com>
*
* \copyright Copyright © 2011-2015 BMW AG. \n
* License MPL-2.0: Mozilla Public License version 2.0 http://mozilla.org/MPL/2.0/.
*
* \file dlt_cdh_coredump.c
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <syslog.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include "dlt_cdh.h"
cdh_status_t read_elf_headers(proc_info_t* p_proc)
{
int phnum = 0;
// Read ELF header
stream_read(&p_proc->streamer, &p_proc->m_Ehdr, sizeof(p_proc->m_Ehdr));
// Read until PROG position
stream_move_to_offest(&p_proc->streamer, p_proc->m_Ehdr.e_phoff);
// Read and store all program headers
p_proc->m_pPhdr = (ELF_Phdr*) malloc(sizeof(ELF_Phdr) * p_proc->m_Ehdr.e_phnum);
if (p_proc->m_pPhdr == NULL)
{
syslog(LOG_ERR, "Cannot allocate Phdr memory (%d headers)", p_proc->m_Ehdr.e_phnum);
return CDH_NOK;
}
for (phnum = 0; phnum < p_proc->m_Ehdr.e_phnum; phnum++)
{
// Read Programm header
stream_read(&p_proc->streamer, &p_proc->m_pPhdr[phnum], sizeof(ELF_Phdr));
}
return CDH_OK;
}
int getNotePageIndex(proc_info_t* p_proc)
{
int i = 0;
// Search PT_NOTE section
for (i = 0; i < p_proc->m_Ehdr.e_phnum; i++)
{
syslog(LOG_INFO, "==Note section prog_note:%d type:0x%X offset:0x%X size:0x%X (%dbytes)",
i,
p_proc->m_pPhdr[i].p_type,
p_proc->m_pPhdr[i].p_offset,
p_proc->m_pPhdr[i].p_filesz,
p_proc->m_pPhdr[i].p_filesz);
if (p_proc->m_pPhdr[i].p_type == PT_NOTE)
break;
}
return i == p_proc->m_Ehdr.e_phnum ? CDH_NOK : i;
}
cdh_status_t read_notes(proc_info_t* p_proc)
{
int prog_note = getNotePageIndex(p_proc);
// p_proc->m_note_page_size = 0;
p_proc->m_Nhdr = NULL;
// note page not found, abort
if (prog_note < 0)
{
syslog(LOG_ERR, "Cannot find note header page index");
return CDH_NOK;
}
// Move to NOTE header position
if (stream_move_to_offest(&p_proc->streamer, p_proc->m_pPhdr[prog_note].p_offset) != CDH_OK)
{
syslog(LOG_ERR, "Cannot move to note header");
return CDH_NOK;
}
if ((p_proc->m_Nhdr = (char*) malloc(p_proc->m_pPhdr[prog_note].p_filesz)) == NULL)
{
syslog(LOG_ERR, "Cannot allocate Nhdr memory (note size %d bytes)", p_proc->m_pPhdr[prog_note].p_filesz);
return CDH_NOK;
}
if (stream_read(&p_proc->streamer, p_proc->m_Nhdr, p_proc->m_pPhdr[prog_note].p_filesz) != CDH_OK)
{
syslog(LOG_ERR, "Cannot read note header");
return CDH_NOK;
}
p_proc->m_note_page_size = p_proc->m_pPhdr[prog_note].p_filesz;
return CDH_OK;
}
cdh_status_t init_coredump(proc_info_t* p_proc)
{
if (p_proc == NULL)
return CDH_NOK;
if (p_proc->can_create_coredump)
{
char l_dst_filename[CORE_MAX_FILENAME_LENGTH];
snprintf(l_dst_filename, sizeof(l_dst_filename), CORE_FILE_PATTERN,
CORE_TMP_DIRECTORY,
p_proc->timestamp,
p_proc->name,
p_proc->pid);
stream_init(&p_proc->streamer, 0, l_dst_filename);
}
else
{
stream_init(&p_proc->streamer, 0, NULL);
}
return CDH_OK;
}
cdh_status_t close_coredump(proc_info_t* p_proc)
{
stream_close(&p_proc->streamer);
return CDH_OK;
}
cdh_status_t treat_coredump(proc_info_t* p_proc)
{
cdh_status_t ret = CDH_OK;
// open src and dest files, allocate read buffer
if (init_coredump(p_proc) != CDH_OK)
{
syslog(LOG_ERR, "cannot init coredump system");
ret = CDH_NOK;
goto finished;
}
if (read_elf_headers(p_proc) == CDH_OK)
{
// TODO: No NOTES here leads to crash elsewhere!!! dlt_cdh_crashid.c: around line 76
if (read_notes(p_proc) != CDH_OK)
{
syslog(LOG_ERR, "cannot read NOTES");
ret = CDH_NOK;
goto finished;
}
}
else
{
if (read_elf_headers(p_proc) != CDH_OK)
{
syslog(LOG_ERR, "cannot read ELF header");
ret = CDH_NOK;
goto finished;
}
}
finished:
// In all cases, we try to finish to read/compress the coredump until the end
if (stream_finish(&p_proc->streamer) != CDH_OK)
syslog(LOG_ERR, "cannot finish coredump compression");
// In all cases, let's close the files
if (close_coredump(p_proc) != CDH_OK)
syslog(LOG_ERR, "cannot close coredump system");
return ret;
}
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