@ -31,13 +31,15 @@
# include <errno.h>
# include <fcntl.h>
# include <stdio.h>
# include <stdlib.h>
# include <stdint.h>
# include <string.h>
# include <unistd.h>
# include <compiler.h>
# include <sys/types.h>
# include <sys/stat.h>
# include <sys/mman.h>
# include "compiler.h"
# include <u-boot/crc.h>
# include <version.h>
@ -45,12 +47,9 @@
static void usage ( const char * exec_name )
{
fprintf ( stderr , " %s [-h] [-r] [-b] [-p <byte>] "
" -s <environment partition size> -o <output> <input file> \n "
fprintf ( stderr , " %s [-h] [-r] [-b] [-p <byte>] -s <environment partition size> -o <output> <input file> \n "
" \n "
" This tool takes a key=value input file (same as would a "
" `printenv' show) and generates the corresponding environment "
" image, ready to be flashed. \n "
" This tool takes a key=value input file (same as would a `printenv' show) and generates the corresponding environment image, ready to be flashed. \n "
" \n "
" \t The input file is in format: \n "
" \t \t key1=value1 \n "
@ -58,14 +57,31 @@ static void usage(const char *exec_name)
" \t \t ... \n "
" \t -r : the environment has multiple copies in flash \n "
" \t -b : the target is big endian (default is little endian) \n "
" \t -p <byte> : fill the image with <byte> bytes instead of "
" 0xff bytes \n "
" \t -p <byte> : fill the image with <byte> bytes instead of 0xff bytes \n "
" \t -V : print version information and exit \n "
" \n "
" If the input file is \" - \" , data is read from standard input \n " ,
exec_name ) ;
}
long int xstrtol ( const char * s )
{
long int tmp ;
errno = 0 ;
tmp = strtol ( s , NULL , 0 ) ;
if ( ! errno )
return tmp ;
if ( errno = = ERANGE )
fprintf ( stderr , " Bad integer format: %s \n " , s ) ;
else
fprintf ( stderr , " Error while parsing %s: %s \n " , s ,
strerror ( errno ) ) ;
exit ( EXIT_FAILURE ) ;
}
int main ( int argc , char * * argv )
{
uint32_t crc , targetendian_crc ;
@ -95,13 +111,12 @@ int main(int argc, char **argv)
while ( ( option = getopt ( argc , argv , " :s:o:rbp:hV " ) ) ! = - 1 ) {
switch ( option ) {
case ' s ' :
datasize = strtol ( optarg , NULL , 0 ) ;
datasize = x strtol( optarg ) ;
break ;
case ' o ' :
bin_filename = strdup ( optarg ) ;
if ( ! bin_filename ) {
fprintf ( stderr , " Can't strdup() the output "
" filename \n " ) ;
fprintf ( stderr , " Can't strdup() the output filename \n " ) ;
return EXIT_FAILURE ;
}
break ;
@ -112,7 +127,7 @@ int main(int argc, char **argv)
bigendian = 1 ;
break ;
case ' p ' :
padbyte = strtol ( optarg , NULL , 0 ) ;
padbyte = x strtol( optarg ) ;
break ;
case ' h ' :
usage ( prg ) ;
@ -123,7 +138,7 @@ int main(int argc, char **argv)
case ' : ' :
fprintf ( stderr , " Missing argument for option -%c \n " ,
optopt ) ;
usage ( argv [ 0 ] ) ;
usage ( prg ) ;
return EXIT_FAILURE ;
default :
fprintf ( stderr , " Wrong option -%c \n " , optopt ) ;
@ -134,22 +149,21 @@ int main(int argc, char **argv)
/* Check datasize and allocate the data */
if ( datasize = = 0 ) {
fprintf ( stderr ,
" Please specify the size of the environment "
" partition. \n " ) ;
fprintf ( stderr , " Please specify the size of the environment partition. \n " ) ;
usage ( prg ) ;
return EXIT_FAILURE ;
}
dataptr = malloc ( datasize * sizeof ( * dataptr ) ) ;
if ( ! dataptr ) {
fprintf ( stderr , " Can't alloc dataptr. \n " ) ;
fprintf ( stderr , " Can't alloc %d bytes for dataptr. \n " ,
datasize ) ;
return EXIT_FAILURE ;
}
/*
* envptr points to the beginning of the actual environment ( after the
* crc and possible ` redundant ' bit
* crc and possible ` redundant ' byte
*/
envsize = datasize - ( CRC_SIZE + redundant ) ;
envptr = dataptr + CRC_SIZE + redundant ;
@ -158,24 +172,28 @@ int main(int argc, char **argv)
memset ( envptr , padbyte , envsize ) ;
/* Open the input file ... */
if ( optind > = argc ) {
fprintf ( stderr , " Please specify an input filename \n " ) ;
return EXIT_FAILURE ;
}
txt_filename = argv [ optind ] ;
if ( strcmp ( txt_filename , " - " ) = = 0 ) {
if ( optind > = argc | | strcmp ( argv [ optind ] , " - " ) = = 0 ) {
int readbytes = 0 ;
int readlen = sizeof ( * envptr ) * 2048 ;
int readlen = sizeof ( * envptr ) * 4096 ;
txt_fd = STDIN_FILENO ;
do {
filebuf = realloc ( filebuf , readlen ) ;
if ( ! filebuf ) {
fprintf ( stderr , " Can't realloc memory for the input file buffer \n " ) ;
return EXIT_FAILURE ;
}
readbytes = read ( txt_fd , filebuf + filesize , readlen ) ;
if ( errno ) {
fprintf ( stderr , " Error while reading stdin: %s \n " ,
strerror ( errno ) ) ;
return EXIT_FAILURE ;
}
filesize + = readbytes ;
} while ( readbytes = = readlen ) ;
} else {
txt_filename = argv [ optind ] ;
txt_fd = open ( txt_filename , O_RDONLY ) ;
if ( txt_fd = = - 1 ) {
fprintf ( stderr , " Can't open \" %s \" : %s \n " ,
@ -185,28 +203,36 @@ int main(int argc, char **argv)
/* ... and check it */
ret = fstat ( txt_fd , & txt_file_stat ) ;
if ( ret = = - 1 ) {
fprintf ( stderr , " Can't stat() on \" %s \" : "
" %s \n " , txt_filename , strerror ( errno ) ) ;
fprintf ( stderr , " Can't stat() on \" %s \" : %s \n " ,
txt_filename , strerror ( errno ) ) ;
return EXIT_FAILURE ;
}
filesize = txt_file_stat . st_size ;
/* Read the raw input file and transform it */
filebuf = malloc ( sizeof ( * envptr ) * filesize ) ;
ret = read ( txt_fd , filebuf , sizeof ( * envptr ) * filesize ) ;
if ( ret ! = sizeof ( * envptr ) * filesize ) {
fprintf ( stderr , " Can't read the whole input file \n " ) ;
return EXIT_FAILURE ;
filebuf = mmap ( NULL , sizeof ( * envptr ) * filesize , PROT_READ ,
MAP_PRIVATE , txt_fd , 0 ) ;
if ( filebuf = = MAP_FAILED ) {
fprintf ( stderr , " mmap (%ld bytes) failed: %s \n " ,
sizeof ( * envptr ) * filesize ,
strerror ( errno ) ) ;
fprintf ( stderr , " Falling back to read() \n " ) ;
filebuf = malloc ( sizeof ( * envptr ) * filesize ) ;
ret = read ( txt_fd , filebuf , sizeof ( * envptr ) * filesize ) ;
if ( ret ! = sizeof ( * envptr ) * filesize ) {
fprintf ( stderr , " Can't read the whole input file (%ld bytes): %s \n " ,
sizeof ( * envptr ) * filesize ,
strerror ( errno ) ) ;
return EXIT_FAILURE ;
}
}
ret = close ( txt_fd ) ;
}
/*
* The right test to do is " => " ( not " > " ) because of the additional
* ending \ 0. See below .
*/
if ( filesize > = envsize ) {
fprintf ( stderr , " The input file is larger than the "
" environment partition size \n " ) ;
/* The +1 is for the additionnal ending \0. See below. */
if ( filesize + 1 > envsize ) {
fprintf ( stderr , " The input file is larger than the environment partition size \n " ) ;
return EXIT_FAILURE ;
}
@ -232,14 +258,6 @@ int main(int argc, char **argv)
/* End of a variable */
envptr [ ep + + ] = ' \0 ' ;
}
} else if ( filebuf [ fp ] = = ' # ' ) {
if ( fp ! = 0 & & filebuf [ fp - 1 ] = = ' \n ' ) {
/* This line is a comment, let's skip it */
while ( fp < txt_file_stat . st_size & & fp + + & &
filebuf [ fp ] ! = ' \n ' ) ;
} else {
envptr [ ep + + ] = filebuf [ fp ] ;
}
} else {
envptr [ ep + + ] = filebuf [ fp ] ;
}
@ -255,8 +273,7 @@ int main(int argc, char **argv)
* check the env size again to make sure we have room for two \ 0
*/
if ( ep > = envsize ) {
fprintf ( stderr , " The environment file is too large for "
" the target environment storage \n " ) ;
fprintf ( stderr , " The environment file is too large for the target environment storage \n " ) ;
return EXIT_FAILURE ;
}
envptr [ ep ] = ' \0 ' ;
@ -268,13 +285,20 @@ int main(int argc, char **argv)
crc = crc32 ( 0 , envptr , envsize ) ;
targetendian_crc = bigendian ? cpu_to_be32 ( crc ) : cpu_to_le32 ( crc ) ;
memcpy ( dataptr , & targetendian_crc , sizeof ( uint32_t ) ) ;
memcpy ( dataptr , & targetendian_crc , sizeof ( targetendian_crc ) ) ;
if ( redundant )
dataptr [ sizeof ( targetendian_crc ) ] = 1 ;
bin_fd = creat ( bin_filename , S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP ) ;
if ( bin_fd = = - 1 ) {
fprintf ( stderr , " Can't open output file \" %s \" : %s \n " ,
bin_filename , strerror ( errno ) ) ;
return EXIT_FAILURE ;
if ( ! bin_filename | | strcmp ( bin_filename , " - " ) = = 0 ) {
bin_fd = STDOUT_FILENO ;
} else {
bin_fd = creat ( bin_filename , S_IRUSR | S_IWUSR | S_IRGRP |
S_IWGRP ) ;
if ( bin_fd = = - 1 ) {
fprintf ( stderr , " Can't open output file \" %s \" : %s \n " ,
bin_filename , strerror ( errno ) ) ;
return EXIT_FAILURE ;
}
}
if ( write ( bin_fd , dataptr , sizeof ( * dataptr ) * datasize ) ! =
Wolfgang Denk
12 years ago