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/*
* Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
*
* 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 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <unistd.h>
#include <fcntl.h>
#include <getopt.h>
#define eprintf(...) fprintf ( stderr, __VA_ARGS__ )
/** Command-line options */
struct options {
};
/** Error usage information */
struct einfo {
/** Size of error information record */
uint32_t size;
/** Error number */
uint32_t error;
/** Offset to error description (NUL-terminated) */
uint32_t desc;
/** Offset to file name (NUL-terminated) */
uint32_t file;
/** Line number */
uint32_t line;
} __attribute__ (( packed ));
/**
* Process einfo file
*
* @v infile Filename
* @v opts Command-line options
*/
static void einfo ( const char *infile,
struct options *opts __attribute__ (( unused )) ) {
int fd;
struct stat stat;
size_t len;
void *start;
struct einfo *einfo;
/* Open einfo file */
if ( ( fd = open ( infile, O_RDONLY ) ) < 0 ) {
eprintf ( "Cannot open \"%s\": %s\n",
infile, strerror ( errno ) );
exit ( 1 );
}
/* Get file size */
if ( fstat ( fd, &stat ) < 0 ) {
eprintf ( "Cannot stat \"%s\": %s\n",
infile, strerror ( errno ) );
exit ( 1 );
}
len = stat.st_size;
if ( len ) {
/* Map file */
if ( ( start = mmap ( NULL, len, PROT_READ, MAP_SHARED,
fd, 0 ) ) == MAP_FAILED ) {
eprintf ( "Cannot mmap \"%s\": %s\n",
infile, strerror ( errno ) );
exit ( 1 );
}
/* Iterate over einfo records */
for ( einfo = start ; ( ( void * ) einfo ) < ( start + len ) ;
einfo = ( ( ( void * ) einfo ) + einfo->size ) ) {
printf ( "%08x\t%s\t%d\t%s\n", einfo->error,
( ( ( char * ) einfo ) + einfo->file ),
einfo->line,
( ( ( char * ) einfo ) + einfo->desc ) );
}
/* Unmap file */
munmap ( start, len );
}
/* Close file */
close ( fd );
}
/**
* Print help
*
* @v program_name Program name
*/
static void print_help ( const char *program_name ) {
eprintf ( "Syntax: %s file1.einfo [file2.einfo...]\n",
program_name );
}
/**
* Parse command-line options
*
* @v argc Argument count
* @v argv Argument list
* @v opts Options structure to populate
*/
static int parse_options ( const int argc, char **argv,
struct options *opts __attribute__ (( unused )) ) {
int c;
while (1) {
int option_index = 0;
static struct option long_options[] = {
{ "help", 0, NULL, 'h' },
{ 0, 0, 0, 0 }
};
if ( ( c = getopt_long ( argc, argv, "s:h",
long_options,
&option_index ) ) == -1 ) {
break;
}
switch ( c ) {
case 'h':
print_help ( argv[0] );
exit ( 0 );
case '?':
default:
exit ( 2 );
}
}
return optind;
}
int main ( int argc, char **argv ) {
struct options opts = {
};
int infile_index;
const char *infile;
/* Parse command-line arguments */
infile_index = parse_options ( argc, argv, &opts );
if ( argc <= infile_index ) {
print_help ( argv[0] );
exit ( 2 );
}
/* Process each einfo file */
for ( ; infile_index < argc ; infile_index++ ) {
infile = argv[infile_index];
einfo ( infile, &opts );
}
return 0;
}
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