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openwrt/tools/firmware-utils/src/mkcsysimg.c

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/*
*
* Copyright (C) 2007-2009 Gabor Juhos <juhosg@openwrt.org>
*
* This program was based on the code found in various Linux
* source tarballs released by Edimax for it's devices.
* Original author: David Hsu <davidhsu@realtek.com.tw>
*
* 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h> /* for unlink() */
#include <libgen.h>
#include <getopt.h> /* for getopt() */
#include <stdarg.h>
#include <errno.h>
#include <sys/stat.h>
#include <endian.h> /* for __BYTE_ORDER */
#if defined(__CYGWIN__)
# include <byteswap.h>
#endif
#include "csysimg.h"
#if (__BYTE_ORDER == __LITTLE_ENDIAN)
# define HOST_TO_LE16(x) (x)
# define HOST_TO_LE32(x) (x)
# define LE16_TO_HOST(x) (x)
# define LE32_TO_HOST(x) (x)
#else
# define HOST_TO_LE16(x) bswap_16(x)
# define HOST_TO_LE32(x) bswap_32(x)
# define LE16_TO_HOST(x) bswap_16(x)
# define LE32_TO_HOST(x) bswap_32(x)
#endif
#define MAX_NUM_BLOCKS 8
#define MAX_ARG_COUNT 32
#define MAX_ARG_LEN 1024
#define FILE_BUF_LEN (16*1024)
#define CSYS_PADC 0xFF
#define BLOCK_TYPE_BOOT 0
#define BLOCK_TYPE_CONF 1
#define BLOCK_TYPE_WEBP 2
#define BLOCK_TYPE_CODE 3
#define BLOCK_TYPE_XTRA 4
#define DEFAULT_BLOCK_ALIGN 0x10000U
#define CSUM_SIZE_NONE 0
#define CSUM_SIZE_8 1
#define CSUM_SIZE_16 2
struct csum_state{
int size;
uint16_t val;
uint16_t tmp;
int odd;
};
struct csys_block {
int type; /* type of the block */
int need_file;
char *file_name; /* name of the file */
uint32_t file_size; /* length of the file */
unsigned char sig[SIG_LEN];
uint32_t addr;
int addr_set;
uint32_t align;
int align_set;
uint8_t padc;
uint32_t size;
uint32_t size_hdr;
uint32_t size_csum;
uint32_t size_avail;
struct csum_state *css;
};
struct board_info {
char *model;
char *name;
uint32_t flash_size;
char sig_boot[SIG_LEN];
char sig_conf[SIG_LEN];
char sig_webp[SIG_LEN];
uint32_t boot_size;
uint32_t conf_size;
uint32_t webp_size;
uint32_t webp_size_max;
uint32_t code_size;
uint32_t addr_code;
uint32_t addr_webp;
};
#define BOARD(m, n, f, sigb, sigw, bs, cs, ws, ac, aw) {\
.model = m, .name = n, .flash_size = f<<20, \
.sig_boot = sigb, .sig_conf = SIG_CONF, .sig_webp = sigw, \
.boot_size = bs, .conf_size = cs, \
.webp_size = ws, .webp_size_max = 3*0x10000, \
.addr_code = ac, .addr_webp = aw \
}
#define BOARD_ADM(m,n,f, sigw) BOARD(m,n,f, ADM_BOOT_SIG, sigw, \
ADM_BOOT_SIZE, ADM_CONF_SIZE, ADM_WEBP_SIZE, \
ADM_CODE_ADDR, ADM_WEBP_ADDR)
/*
* Globals
*/
char *progname;
char *ofname = NULL;
int verblevel = 0;
int invalid_causes_error = 1;
int keep_invalid_images = 0;
struct board_info *board = NULL;
struct csys_block *boot_block = NULL;
struct csys_block *conf_block = NULL;
struct csys_block *webp_block = NULL;
struct csys_block *code_block = NULL;
struct csys_block blocks[MAX_NUM_BLOCKS];
int num_blocks = 0;
static struct board_info boards[] = {
/* The original Edimax products */
BOARD_ADM("BR-6104K", "Edimax BR-6104K", 2, SIG_BR6104K),
BOARD_ADM("BR-6104KP", "Edimax BR-6104KP", 2, SIG_BR6104KP),
BOARD_ADM("BR-6104Wg", "Edimax BR-6104Wg", 2, SIG_BR6104Wg),
BOARD_ADM("BR-6114WG", "Edimax BR-6114WG", 2, SIG_BR6114WG),
BOARD_ADM("BR-6524K", "Edimax BR-6524K", 2, SIG_BR6524K),
BOARD_ADM("BR-6524KP", "Edimax BR-6524KP", 2, SIG_BR6524KP),
BOARD_ADM("BR-6524N", "Edimax BR-6524N", 2, SIG_BR6524N),
BOARD_ADM("BR-6524WG", "Edimax BR-6524WG", 4, SIG_BR6524WG),
BOARD_ADM("BR-6524WP", "Edimax BR-6524WP", 4, SIG_BR6524WP),
BOARD_ADM("BR-6541K", "Edimax BR-6541K", 2, SIG_BR6541K),
BOARD_ADM("BR-6541KP", "Edimax BR-6541K", 2, SIG_BR6541KP),
BOARD_ADM("BR-6541WP", "Edimax BR-6541WP", 4, SIG_BR6541WP),
BOARD_ADM("EW-7207APg", "Edimax EW-7207APg", 2, SIG_EW7207APg),
BOARD_ADM("PS-1205UWg", "Edimax PS-1205UWg", 2, SIG_PS1205UWg),
BOARD_ADM("PS-3205U", "Edimax PS-3205U", 2, SIG_PS3205U),
BOARD_ADM("PS-3205UWg", "Edimax PS-3205UWg", 2, SIG_PS3205UWg),
/* Hawking products */
BOARD_ADM("H2BR4", "Hawking H2BR4", 2, SIG_H2BR4),
BOARD_ADM("H2WR54G", "Hawking H2WR54G", 4, SIG_H2WR54G),
/* Planet products */
BOARD_ADM("XRT-401D", "Planet XRT-401D", 2, SIG_XRT401D),
BOARD_ADM("XRT-402D", "Planet XRT-402D", 2, SIG_XRT402D),
/* Conceptronic products */
BOARD_ADM("C54BSR4", "Conceptronic C54BSR4", 2, SIG_C54BSR4),
/* OSBRiDGE products */
BOARD_ADM("5GXi", "OSBDRiDGE 5GXi", 2, SIG_5GXI),
{.model = NULL}
};
/*
* Message macros
*/
#define ERR(fmt, ...) do { \
fflush(0); \
fprintf(stderr, "[%s] *** error: " fmt "\n", progname, ## __VA_ARGS__ ); \
} while (0)
#define ERRS(fmt, ...) do { \
int save = errno; \
fflush(0); \
fprintf(stderr, "[%s] *** error: " fmt "\n", progname, ## __VA_ARGS__ \
, strerror(save)); \
} while (0)
#define WARN(fmt, ...) do { \
fprintf(stderr, "[%s] *** warning: " fmt "\n", progname, ## __VA_ARGS__ ); \
} while (0)
#define DBG(lev, fmt, ...) do { \
if (verblevel < lev) \
break;\
fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
} while (0)
#define ERR_FATAL -1
#define ERR_INVALID_IMAGE -2
void
usage(int status)
{
FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
struct board_info *board;
fprintf(stream, "Usage: %s [OPTIONS...] <file>\n", progname);
fprintf(stream,
"\n"
"Options:\n"
" -B <board> create image for the board specified with <board>.\n"
" valid <board> values:\n"
);
for (board = boards; board->model != NULL; board++){
fprintf(stream,
" %-12s: %s\n",
board->model, board->name);
};
fprintf(stream,
" -d don't throw error on invalid images\n"
" -k keep invalid images\n"
" -b <file>[:<align>[:<padc>]]\n"
" add boot code to the image\n"
" -c <file>[:<align>[:<padc>]]\n"
" add configuration settings to the image\n"
" -r <file>:[<addr>][:<align>[:<padc>]]\n"
" add runtime code to the image\n"
" -w [<file>:[<addr>][:<align>[:<padc>]]]\n"
" add webpages to the image\n"
" -x <file>[:<align>[:<padc>]]\n"
" add extra data at the end of the image\n"
" -h show this screen\n"
"Parameters:\n"
" <file> write output to the file <file>\n"
);
exit(status);
}
static inline uint32_t align(uint32_t base, uint32_t alignment)
{
uint32_t ret;
if (alignment) {
ret = (base + alignment - 1);
ret &= ~(alignment-1);
} else {
ret = base;
}
return ret;
}
/*
* argument parsing
*/
int
str2u32(char *arg, uint32_t *val)
{
char *err = NULL;
uint32_t t;
errno=0;
t = strtoul(arg, &err, 0);
if (errno || (err==arg) || ((err != NULL) && *err)) {
return -1;
}
*val = t;
return 0;
}
int
str2u16(char *arg, uint16_t *val)
{
char *err = NULL;
uint32_t t;
errno=0;
t = strtoul(arg, &err, 0);
if (errno || (err==arg) || ((err != NULL) && *err) || (t >= 0x10000)) {
return -1;
}
*val = t & 0xFFFF;
return 0;
}
int
str2u8(char *arg, uint8_t *val)
{
char *err = NULL;
uint32_t t;
errno=0;
t = strtoul(arg, &err, 0);
if (errno || (err==arg) || ((err != NULL) && *err) || (t >= 0x100)) {
return -1;
}
*val = t & 0xFF;
return 0;
}
int
str2sig(char *arg, uint32_t *sig)
{
if (strlen(arg) != 4)
return -1;
*sig = arg[0] | (arg[1] << 8) | (arg[2] << 16) | (arg[3] << 24);
return 0;
}
int
parse_arg(char *arg, char *buf, char *argv[])
{
int res = 0;
size_t argl;
char *tok;
char **ap = &buf;
int i;
memset(argv, 0, MAX_ARG_COUNT * sizeof(void *));
if ((arg == NULL)) {
/* no arguments */
return 0;
}
argl = strlen(arg);
if (argl == 0) {
/* no arguments */
return 0;
}
if (argl >= MAX_ARG_LEN) {
/* argument is too long */
argl = MAX_ARG_LEN-1;
}
memcpy(buf, arg, argl);
buf[argl] = '\0';
for (i = 0; i < MAX_ARG_COUNT; i++) {
tok = strsep(ap, ":");
if (tok == NULL) {
break;
}
#if 0
else if (tok[0] == '\0') {
break;
}
#endif
argv[i] = tok;
res++;
}
return res;
}
int
required_arg(char c, char *arg)
{
if (arg == NULL || *arg != '-')
return 0;
ERR("option -%c requires an argument\n", c);
return ERR_FATAL;
}
int
is_empty_arg(char *arg)
{
int ret = 1;
if (arg != NULL) {
if (*arg) ret = 0;
};
return ret;
}
void
csum8_update(uint8_t *p, uint32_t len, struct csum_state *css)
{
for ( ; len > 0; len --) {
css->val += *p++;
}
}
uint16_t
csum8_get(struct csum_state *css)
{
uint8_t t;
t = css->val;
return ~t + 1;
}
void
csum16_update(uint8_t *p, uint32_t len, struct csum_state *css)
{
uint16_t t;
if (css->odd) {
t = css->tmp + (p[0]<<8);
css->val += LE16_TO_HOST(t);
css->odd = 0;
len--;
p++;
}
for ( ; len > 1; len -= 2, p +=2 ) {
t = p[0] + (p[1] << 8);
css->val += LE16_TO_HOST(t);
}
if (len == 1) {
css->tmp = p[0];
css->odd = 1;
}
}
uint16_t
csum16_get(struct csum_state *css)
{
char pad = 0;
csum16_update(&pad, 1, css);
return ~css->val + 1;
}
void
csum_init(struct csum_state *css, int size)
{
css->val = 0;
css->tmp = 0;
css->odd = 0;
css->size = size;
}
void
csum_update(uint8_t *p, uint32_t len, struct csum_state *css)
{
switch (css->size) {
case CSUM_SIZE_8:
csum8_update(p,len,css);
break;
case CSUM_SIZE_16:
csum16_update(p,len,css);
break;
}
}
uint16_t
csum_get(struct csum_state *css)
{
uint16_t ret;
switch (css->size) {
case CSUM_SIZE_8:
ret = csum8_get(css);
break;
case CSUM_SIZE_16:
ret = csum16_get(css);
break;
}
return ret;
}
/*
* routines to write data to the output file
*/
int
write_out_data(FILE *outfile, uint8_t *data, size_t len,
struct csum_state *css)
{
errno = 0;
fwrite(data, len, 1, outfile);
if (errno) {
ERRS("unable to write output file");
return ERR_FATAL;
}
if (css) {
csum_update(data, len, css);
}
return 0;
}
int
write_out_padding(FILE *outfile, size_t len, uint8_t padc,
struct csum_state *css)
{
uint8_t buf[512];
size_t buflen = sizeof(buf);
int err;
memset(buf, padc, buflen);
while (len > 0) {
if (len < buflen)
buflen = len;
err = write_out_data(outfile, buf, buflen, css);
if (err)
return err;
len -= buflen;
}
return 0;
}
int
block_stat_file(struct csys_block *block)
{
struct stat st;
int err;
if (block->file_name == NULL)
return 0;
err = stat(block->file_name, &st);
if (err){
ERRS("stat failed on %s", block->file_name);
return ERR_FATAL;
}
block->file_size = st.st_size;
return 0;
}
int
block_writeout_hdr(FILE *outfile, struct csys_block *block)
{
struct csys_header hdr;
int res;
if (block->size_hdr == 0)
return 0;
/* setup header fields */
memcpy(hdr.sig, block->sig, 4);
hdr.addr = HOST_TO_LE32(block->addr);
hdr.size = HOST_TO_LE32(block->size - block->size_hdr - block->size_csum);
DBG(1,"writing header for block");
res = write_out_data(outfile, (uint8_t *)&hdr, sizeof(hdr),NULL);
return res;
}
int
block_writeout_file(FILE *outfile, struct csys_block *block)
{
char buf[FILE_BUF_LEN];
size_t buflen = sizeof(buf);
FILE *f;
size_t len;
int res;
if (block->file_name == NULL)
return 0;
if (block->file_size == 0)
return 0;
errno = 0;
f = fopen(block->file_name,"r");
if (errno) {
ERRS("unable to open file: %s", block->file_name);
return ERR_FATAL;
}
len = block->file_size;
while (len > 0) {
if (len < buflen)
buflen = len;
/* read data from source file */
errno = 0;
fread(buf, buflen, 1, f);
if (errno != 0) {
ERRS("unable to read from file: %s", block->file_name);
res = ERR_FATAL;
break;
}
res = write_out_data(outfile, buf, buflen, block->css);
if (res)
break;
len -= buflen;
}
fclose(f);
return res;
}
int
block_writeout_data(FILE *outfile, struct csys_block *block)
{
int res;
size_t padlen;
res = block_writeout_file(outfile, block);
if (res)
return res;
/* write padding data if neccesary */
padlen = block->size_avail - block->file_size;
DBG(1,"padding block, length=%d", padlen);
res = write_out_padding(outfile, padlen, block->padc, block->css);
return res;
}
int
block_writeout_csum(FILE *outfile, struct csys_block *block)
{
uint16_t csum;
int res;
if (block->size_csum == 0)
return 0;
DBG(1,"writing checksum for block");
csum = HOST_TO_LE16(csum_get(block->css));
res = write_out_data(outfile, (uint8_t *)&csum, block->size_csum, NULL);
return res;
}
int
block_writeout(FILE *outfile, struct csys_block *block)
{
int res;
struct csum_state css;
res = 0;
if (block == NULL)
return res;
block->css = NULL;
DBG(2, "writing block, file=%s, file_size=%d, space=%d",
block->file_name, block->file_size, block->size_avail);
res = block_writeout_hdr(outfile, block);
if (res)
return res;
if (block->size_csum != 0) {
block->css = &css;
csum_init(&css, block->size_csum);
}
res = block_writeout_data(outfile, block);
if (res)
return res;
res = block_writeout_csum(outfile, block);
if (res)
return res;
return res;
}
int
write_out_blocks(FILE *outfile)
{
struct csys_block *block;
int i, res;
res = block_writeout(outfile, boot_block);
if (res)
return res;
res = block_writeout(outfile, conf_block);
if (res)
return res;
res = block_writeout(outfile, webp_block);
if (res)
return res;
res = block_writeout(outfile, code_block);
if (res)
return res;
res = 0;
for (i=0; i < num_blocks; i++) {
block = &blocks[i];
if (block->type != BLOCK_TYPE_XTRA)
continue;
res = block_writeout(outfile, block);
if (res)
break;
}
return res;
}
struct board_info *
find_board(char *model)
{
struct board_info *ret;
struct board_info *board;
ret = NULL;
for (board = boards; board->model != NULL; board++){
if (strcasecmp(model, board->model) == 0) {
ret = board;
break;
}
};
return ret;
}
int
parse_opt_board(char ch, char *arg)
{
DBG(1,"parsing board option: -%c %s", ch, arg);
if (board != NULL) {
ERR("only one board option allowed");
return ERR_FATAL;
}
if (required_arg(ch, arg))
return ERR_FATAL;
board = find_board(arg);
if (board == NULL){
ERR("invalid/unknown board specified: %s", arg);
return ERR_FATAL;
}
return 0;
}
int
parse_opt_block(char ch, char *arg)
{
char buf[MAX_ARG_LEN];
char *argv[MAX_ARG_COUNT];
int argc;
char *p;
struct csys_block *block;
int i;
if ( num_blocks > MAX_NUM_BLOCKS ) {
ERR("too many blocks specified");
return ERR_FATAL;
}
block = &blocks[num_blocks];
/* setup default field values */
block->need_file = 1;
block->padc = 0xFF;
switch (ch) {
case 'b':
if (boot_block) {
WARN("only one boot block allowed");
break;
}
block->type = BLOCK_TYPE_BOOT;
boot_block = block;
break;
case 'c':
if (conf_block) {
WARN("only one config block allowed");
break;
}
block->type = BLOCK_TYPE_CONF;
conf_block = block;
break;
case 'w':
if (webp_block) {
WARN("only one web block allowed");
break;
}
block->type = BLOCK_TYPE_WEBP;
block->size_hdr = sizeof(struct csys_header);
block->size_csum = CSUM_SIZE_8;
block->need_file = 0;
webp_block = block;
break;
case 'r':
if (code_block) {
WARN("only one runtime block allowed");
break;
}
block->type = BLOCK_TYPE_CODE;
block->size_hdr = sizeof(struct csys_header);
block->size_csum = CSUM_SIZE_16;
code_block = block;
break;
case 'x':
block->type = BLOCK_TYPE_XTRA;
break;
default:
ERR("unknown block type \"%c\"", ch);
return ERR_FATAL;
}
argc = parse_arg(arg, buf, argv);
i = 0;
p = argv[i++];
if (!is_empty_arg(p)) {
block->file_name = strdup(p);
if (block->file_name == NULL) {
ERR("not enough memory");
return ERR_FATAL;
}
} else if (block->need_file){
ERR("no file specified in %s", arg);
return ERR_FATAL;
}
if (block->size_hdr) {
p = argv[i++];
if (!is_empty_arg(p)) {
if (str2u32(p, &block->addr) != 0) {
ERR("invalid start address in %s", arg);
return ERR_FATAL;
}
block->addr_set = 1;
}
}
p = argv[i++];
if (!is_empty_arg(p)) {
if (str2u32(p, &block->align) != 0) {
ERR("invalid alignment value in %s", arg);
return ERR_FATAL;
}
block->align_set = 1;
}
p = argv[i++];
if (!is_empty_arg(p) && (str2u8(p, &block->padc) != 0)) {
ERR("invalid paddig character in %s", arg);
return ERR_FATAL;
}
num_blocks++;
return 0;
}
int
process_blocks(void)
{
struct csys_block *block;
uint32_t offs = 0;
int i;
int res;
res = 0;
/* collecting stats */
for (i = 0; i < num_blocks; i++) {
block = &blocks[i];
res = block_stat_file(block);
if (res)
return res;
}
/* bootloader */
block = boot_block;
if (block) {
block->size = board->boot_size;
if (block->file_size > board->boot_size) {
WARN("boot block is too big");
res = ERR_INVALID_IMAGE;
}
}
offs += board->boot_size;
/* configuration data */
block = conf_block;
if (block) {
block->size = board->conf_size;
if (block->file_size > board->conf_size) {
WARN("config block is too big");
res = ERR_INVALID_IMAGE;
}
}
offs += board->conf_size;
/* webpages */
block = webp_block;
if (block) {
memcpy(block->sig, board->sig_webp, 4);
if (block->addr_set == 0)
block->addr = board->addr_webp;
if (block->align_set == 0)
block->align = DEFAULT_BLOCK_ALIGN;
block->size = align(offs + block->file_size + block->size_hdr +
block->size_csum, block->align) - offs;
if (block->size > board->webp_size_max) {
WARN("webpages block is too big");
res = ERR_INVALID_IMAGE;
}
DBG(2,"webpages start at %08x, size=%08x", offs,
block->size);
offs += block->size;
if (offs > board->flash_size) {
WARN("webp block is too big");
res = ERR_INVALID_IMAGE;
}
}
/* runtime code */
block = code_block;
if (block) {
memcpy(code_block->sig, SIG_CSYS, 4);
if (block->addr_set == 0)
block->addr = board->addr_code;
if (block->align_set == 0)
block->align = DEFAULT_BLOCK_ALIGN;
block->size = align(offs + block->file_size +
block->size_hdr + block->size_csum,
block->align) - offs;
DBG(2,"code block start at %08x, size=%08x", offs,
block->size);
offs += block->size;
if (offs > board->flash_size) {
WARN("code block is too big");
res = ERR_INVALID_IMAGE;
}
}
for (i = 0; i < num_blocks; i++) {
block = &blocks[i];
if (block->type != BLOCK_TYPE_XTRA)
continue;
if (block->align_set == 0)
block->align = DEFAULT_BLOCK_ALIGN;
block->size = align(offs + block->file_size,
block->align) - offs;
DBG(2,"file %s start at %08x, size=%08x, align=%08x",
block->file_name, offs, block->size, block->align);
offs += block->size;
if (offs > board->flash_size) {
WARN("file %s is too big, size=%d, avail=%d",
block->file_name, block->file_size,
board->flash_size - offs);
res = ERR_INVALID_IMAGE;
}
}
for (i = 0; i < num_blocks; i++) {
block = &blocks[i];
block->size_avail = block->size - block->size_hdr -
block->size_csum;
if (block->size_avail < block->file_size) {
WARN("file %s is too big, size=%d, avail=%d",
block->file_name, block->file_size,
block->size_avail);
res = ERR_INVALID_IMAGE;
}
}
return res;
}
int
main(int argc, char *argv[])
{
int optinvalid = 0; /* flag for invalid option */
int c;
int res = ERR_FATAL;
FILE *outfile;
progname=basename(argv[0]);
opterr = 0; /* could not print standard getopt error messages */
while ( 1 ) {
optinvalid = 0;
c = getopt(argc, argv, "b:B:c:dhkr:vw:x:");
if (c == -1)
break;
switch (c) {
case 'b':
case 'c':
case 'r':
case 'x':
optinvalid = parse_opt_block(c,optarg);
break;
case 'w':
if (optarg != NULL && *optarg == '-') {
/* rollback */
optind--;
optarg = NULL;
}
optinvalid = parse_opt_block(c,optarg);
break;
case 'd':
invalid_causes_error = 0;
break;
case 'k':
keep_invalid_images = 1;
break;
case 'B':
optinvalid = parse_opt_board(c,optarg);
break;
case 'v':
verblevel++;
break;
case 'h':
usage(EXIT_SUCCESS);
break;
default:
optinvalid = 1;
break;
}
if (optinvalid != 0 ){
ERR("invalid option: -%c", optopt);
goto out;
}
}
if (board == NULL) {
ERR("no board specified");
goto out;
}
if (optind == argc) {
ERR("no output file specified");
goto out;
}
ofname = argv[optind++];
if (optind < argc) {
ERR("invalid option: %s", argv[optind]);
goto out;
}
res = process_blocks();
if (res == ERR_FATAL)
goto out;
if (res == ERR_INVALID_IMAGE) {
if (invalid_causes_error)
res = ERR_FATAL;
if (keep_invalid_images == 0) {
WARN("generation of invalid images disabled", ofname);
goto out;
}
WARN("generating invalid image", ofname);
}
outfile = fopen(ofname, "w");
if (outfile == NULL) {
ERRS("could not open \"%s\" for writing", ofname);
res = ERR_FATAL;
goto out;
}
if (write_out_blocks(outfile) != 0) {
res = ERR_FATAL;
goto out_flush;
}
DBG(1,"Image file %s completed.", ofname);
out_flush:
fflush(outfile);
fclose(outfile);
if (res == ERR_FATAL) {
unlink(ofname);
}
out:
if (res == ERR_FATAL)
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
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