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/*
* Copyright (c) International Business Machines Corp., 2000-2002
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* COMPONENT_NAME: jfs_fscklog
*
* This tool extracts the contents of the specified (or implied)
* fsck service log on the specified device. The output is
* written to a file (name specified or defaulted).
*
* This routine also displays the contents of an extracted
* fsck service log. If no input file name is specified,
* a default path and name are used.
*
* USAGE:
*
* jfs_fscklog [-d] [-e <device>] [-f <file.name>] [-p] [-V]
*
* where: o -d displays an fsck.jfs log already extracted with -e
* o -e extracts an fsck.jfs log from device
* o -f specifies the file name of the extracted log
* o <file.name> is assumed to be in the present working
* directory unless it is fully qualified
* o <file.name> must be 127 characters or less in length
* o if <file.name> is not specified, the default path
* and name are used: <pwd>fscklog.new
* o -p specifies extracting the prior log
* o -V prints the verstion number and date, and exits
*
* SAMPLE INVOCATIONS:
* To extract the most recent log on /dev/hda5 into <pwd>fscklog.new
* jfs_fscklog -e /dev/hda5
*
* To extract the most recent log on /dev/hda7 into <pwd>output.fil
* jfs_fscklog -e /dev/hda7 -f output.fil
*
* To extract and display the most recent log on /dev/hdb3
* jfs_fscklog -e /dev/hdb3 -d
*
* To extract and display the prior log on /dev/hdb4 into <pwd>fscklog.old
* jfs_fscklog -p -e /dev/hdb4 -d
*
* To display the contents of the fsck service log in <pwd>fscklog.new
* jfs_fscklog -d
*
* To display the contents of the fsck service log in <pwd>input.fil
* jfs_fscklog -d -f input.fil
*
*/
#define _GNU_SOURCE /* for basename() */
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <unistd.h>
#include "jfs_version.h"
#include "jfs_fscklog.h"
#include "xfsck.h"
#include "fsck_message.h"
struct fscklog_record fscklog_record;
struct fscklog_record *local_recptr;
char file_name[128];
char *Vol_Label = NULL;
bool extract_log;
bool display_log;
/* + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
*
* The following are internal to this file
*
*/
int parse_parms(int, char **);
int v_send_msg(int, const char *, int, ...);
/* VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV */
void fscklog_usage(void)
{
printf("\nUsage: jfs_fscklog [-d] [-e device] [-f file.name] [-p] [-V]\n");
printf("\nEmergency help:\n"
" -d Display an already extracted fsck.jfs service log.\n"
" -e device Extract the fsck.jfs service log from device.\n"
" -f file.name Specify the file name that the fsck.jfs log will be extracted into, or\n"
" the file name of the already extracted fsck.jfs log that will be displayed.\n"
" -p Extract the previous fsck.jfs service log.\n"
" -V Print version information only.\n"
"NOTE: -e and -d can be used together to extract and display the fsck.jfs service log.\n");
return;
}
/*****************************************************************************
* NAME: main
*
* FUNCTION: Entry point for jfs read/display aggregate fsck service log
*
* RETURNS:
* success: 0
* failure: something else
*/
int main(int argc, char **argv)
{
int rc = 0;
printf("jfs_fscklog version %s, %s\n", VERSION, JFSUTILS_DATE);
/*
* some basic initializations
*/
local_recptr = &fscklog_record;
memset(local_recptr, 0, sizeof (fscklog_record));
local_recptr->which_log = NEWLOG;
local_recptr->file_name_specified = 0;
extract_log = display_log = 0;
memset((void *) file_name, 0, 128);
/*
* Process the parameters given by the user
*/
rc = parse_parms(argc, argv);
if ((rc == 0) && (extract_log)) {
rc = xchklog(local_recptr);
}
if ((rc == 0) && (display_log)) {
rc = xchkdmp(local_recptr);
}
return (rc);
}
/*****************************************************************************
* NAME: parse_parms
*
* FUNCTION: Parse the invocation parameters. If any unrecognized
* parameters are detected, or if any required parameter is
* omitted, issue a message and exit.
*
* PARAMETERS: as specified to main()
*
* RETURNS:
* success: 0
* failure: something else
*/
int parse_parms(int argc, char **argv)
{
int pp_rc = 0;
int arg_len = 0;
int c;
FILE *file_p = NULL;
while ((c = getopt(argc, argv, "de:f:pV")) != EOF) {
switch (c) {
case 'd':
/* display extracted log */
display_log = -1;
break;
case 'e':
/* extract fsck.jfs log */
extract_log = -1;
Vol_Label = optarg;
/* ensure volume is valid */
file_p = fopen(Vol_Label, "r");
if (file_p) {
fclose(file_p);
} else {
send_msg(fsck_XCHKLOGBADDEVICE, Vol_Label);
fscklog_usage();
return (FSCK_FAILED);
}
break;
case 'f':
/* specify file name */
arg_len = strlen(optarg);
if (arg_len > 128) {
/* filename too long */
send_msg(fsck_XCHKDMPBADFNAME);
return (XCHKDMP_FAILED);
} else {
/* go with the specified file name */
strncpy(file_name, optarg, arg_len);
local_recptr->file_name_specified = -1;
}
break;
case 'p':
/* extract old log */
local_recptr->which_log = OLDLOG;
break;
case 'V':
/* print version and exit */
exit(0);
break;
default:
fscklog_usage();
return (XCHKDMP_FAILED);
}
}
if (argc < 2) {
fscklog_usage();
return (XCHKDMP_FAILED);
}
return (pp_rc);
}
/*****************************************************************************
* NAME: v_send_msg
*
* FUNCTION: according to the fsck message structure
*
* PARAMETERS:
*
* RETURNS:
* nothing
*/
int v_send_msg(int msg_num, const char *file_name, int line_number, ...) {
struct fsck_message *message = &msg_defs[msg_num];
char msg_string[max_log_entry_length - 4];
char debug_detail[100];
va_list args;
va_start(args, line_number);
vsnprintf(msg_string, sizeof(msg_string), message->msg_txt, args);
va_end(args);
sprintf(debug_detail, " [%s:%d]\n", basename(file_name), line_number);
printf("%s", msg_string);
printf("%s", debug_detail);
return 0;
}
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