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

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/*
* $Id$
*
* Copyright (C) 2007 OpenWrt.org
* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
*/
#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
#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 2
#define MAX_ARG_COUNT 32
#define MAX_ARG_LEN 1024
#define FILE_BUF_LEN (16*1024)
#define DEFAULT_PADC 0xFF
#define DEFAULT_BLOCK_ALIGN 0x10000U
#define CSUM_TYPE_NONE 0
#define CSUM_TYPE_8 1
#define CSUM_TYPE_16 2
#define CSUM_TYPE_32 3
struct csum_state{
int size;
uint32_t val;
uint32_t tmp;
int odd;
};
struct image_desc {
int need_file;
char *file_name; /* name of the file */
uint32_t file_size; /* length of the file */
uint32_t csum;
uint32_t out_size;
uint8_t padc;
};
struct fwhdr_nfs {
uint32_t type;
uint32_t kernel_offs;
uint32_t kernel_size;
uint32_t fs_offs;
uint32_t fs_size;
uint32_t kernel_csum;
uint32_t fs_csum;
uint32_t id;
} __attribute__ ((packed));
struct fwhdr_cas {
uint32_t type;
uint32_t kernel_offs;
uint32_t kernel_size;
uint32_t id;
uint32_t kernel_csum;
uint32_t magic1;
uint32_t magic2;
uint32_t magic3;
} __attribute__ ((packed));
union file_hdr {
struct fwhdr_cas cas;
struct fwhdr_nfs nfs;
};
struct board_info {
char *model;
char *name;
int header_type;
uint32_t id;
uint32_t max_kernel_size;
uint32_t max_fs_size;
};
#define HEADER_TYPE_NFS 0
#define HEADER_TYPE_CAS 1
#define KERNEL_SIZE_CAS (61*64*1024)
#define KERNEL_SIZE_NFS (52*64*1024)
#define FS_SIZE_NFS (9*64*1024)
#define CAS_MAGIC1 0x5241AA55
#define CAS_MAGIC2 0x524F4741
#define CAS_MAGIC3 0xD3F22D4E
/* Cellvision/SparkLAN products */
#define MODEL_CAS_630 0x01000000
#define MODEL_CAS_630W 0x01000000
#define MODEL_CAS_670 0x01000000
#define MODEL_CAS_670W 0x01000000
#define MODEL_NFS_101U 0x01000000
#define MODEL_NFS_101WU 0x01000003
#define MODEL_NFS_202U 0x01000001
#define MODEL_NFS_202WU 0x01000002
/* Corega products */
#define MODEL_CG_NSADP 0x01000020 /* NFS-101U */
#define MODEL_CG_NSADPCR 0x01000021 /* NFS-202U */
/* D-Link products */
#define MODEL_DCS_950 0x01010102 /* CAS-630 */
#define MODEL_DCS_950G 0x01020102 /* CAS-630W */
#define MODEL_DNS_120 0x01000030 /* NFS-101U */
#define MODEL_DNS_G120 0x01000032 /* NFS-101WU */
/* Digitus products */
#define MODEL_DN_16021 MODEL_CAS_630
#define MODEL_DN_16022 MODEL_CAS_630W
#define MODEL_DN_16030 MODEL_CAS_670
#define MODEL_DN_16031 MODEL_CAS_670W
#define MODEL_DN_7013 MODEL_NFS_101U
/* Lobos products */
#define MODEL_LB_SS01TXU 0x00000000
/* Neu-Fusion products */
/* Ovislink products */
#define MODEL_MU_5000FS 0x01000040 /* NFS-101U */
/* Repotec products */
/* Sitecom products */
#define MODEL_LN_350 /* unknown */
#define MODEL_LN_403 0x01020402
#define MODEL_WL_401 0x01010402
/* Surecom products */
#define MODEL_EP_4001_MM 0x01030A02 /* CAS-630 */
#define MODEL_EP_4002_MM 0x01020A02 /* CAS-630W */
#define MODEL_EP_4011_MM 0x01010A02 /* CAS-670 */
#define MODEL_EP_4012_MM 0x01000A02 /* CAS-670W */
#define MODEL_EP_9812_U /* unknown */
/* Trendnet products */
#define MODEL_TN_U100 0x01000081 /* NFS-101U */
#define MODEL_TN_U200 0x01000081 /* NFS-202U */
/*
* Globals
*/
char *progname;
char *ofname;
int verblevel;
int keep_invalid_images;
int invalid_causes_error = 1;
union file_hdr header;
struct image_desc kernel_image;
struct image_desc fs_image;
struct board_info *board = NULL;
#define BOARD(m, n, i, ks, fs, h) { \
.model = (m), \
.name = (n), \
.id = (i), \
.max_kernel_size = (ks), \
.max_fs_size = (fs), \
.header_type = (h) \
}
#define BOARD_CAS(m,n,i) \
BOARD(m, n, i, KERNEL_SIZE_CAS, 0, HEADER_TYPE_CAS)
#define BOARD_NFS(m,n,i) \
BOARD(m, n, i, KERNEL_SIZE_NFS, FS_SIZE_NFS, HEADER_TYPE_NFS)
static struct board_info boards[] = {
/* Cellvision/Sparklan products */
BOARD_CAS("CAS-630", "Cellvision CAS-630", MODEL_CAS_630),
BOARD_CAS("CAS-630W", "Cellvision CAS-630W", MODEL_CAS_630W),
BOARD_CAS("CAS-670", "Cellvision CAS-670", MODEL_CAS_670),
BOARD_CAS("CAS-670W", "Cellvision CAS-670W", MODEL_CAS_670W),
BOARD_NFS("NFS-101U", "Cellvision NFS-101U", MODEL_NFS_101U),
BOARD_NFS("NFS-101WU", "Cellvision NFS-101WU", MODEL_NFS_101WU),
BOARD_NFS("NFS-202U", "Cellvision NFS-202U", MODEL_NFS_202U),
BOARD_NFS("NFS-202WU", "Cellvision NFS-202WU", MODEL_NFS_202WU),
/* Corega products */
BOARD_NFS("CG-NSADP", "Corega CG-NSADP", MODEL_CG_NSADP),
BOARD_NFS("CG-NSADPCR", "Corega CG-NSADPCR", MODEL_CG_NSADPCR),
/* D-Link products */
BOARD_CAS("DCS-950", "D-Link DCS-950", MODEL_DCS_950),
BOARD_CAS("DCS-950G", "D-Link DCS-950G", MODEL_DCS_950G),
BOARD_NFS("DNS-120", "D-Link DNS-120", MODEL_DNS_120),
BOARD_NFS("DNS-G120", "D-Link DNS-G120", MODEL_DNS_G120),
/* Digitus products */
BOARD_NFS("DN-7013", "Digitus DN-7013", MODEL_DN_7013),
/* Lobos products */
BOARD_NFS("LB-SS01TXU", "Lobos LB-SS01TXU", MODEL_LB_SS01TXU),
/* Ovislink products */
BOARD_NFS("MU-5000FS", "Ovislink MU-5000FS", MODEL_MU_5000FS),
/* Sitecom products */
BOARD_CAS("LN-403", "Sitecom LN-403", MODEL_LN_403),
BOARD_CAS("WL-401", "Sitecom WL-401", MODEL_WL_401),
/* Surecom products */
BOARD_CAS("EP-4001-MM", "Surecom EP-4001-MM", MODEL_EP_4001_MM),
BOARD_CAS("EP-4002-MM", "Surecom EP-4002-MM", MODEL_EP_4002_MM),
BOARD_CAS("EP-4011-MM", "Surecom EP-4011-MM", MODEL_EP_4011_MM),
BOARD_CAS("EP-4012-MM", "Surecom EP-4012-MM", MODEL_EP_4012_MM),
/* TrendNET products */
BOARD_NFS("TN-U100", "TrendNET TN-U100", MODEL_TN_U100),
BOARD_NFS("TN-U200", "TrendNET TN-U200", MODEL_TN_U200),
{.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"
" -K <file> add kernel to the image\n"
" -C <file> add custom filesystem to 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
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
csum32_update(uint8_t *p, uint32_t len, struct csum_state *css)
{
uint32_t t;
for ( ; len > 3; len -= 4, p += 4 ) {
t = p[0] + (p[1] << 8) + (p[2] << 16) + (p[3] << 24);
css->val ^= t;
}
}
uint32_t
csum32_get(struct csum_state *css)
{
return css->val;
}
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_TYPE_8:
csum8_update(p,len,css);
break;
case CSUM_TYPE_16:
csum16_update(p,len,css);
break;
case CSUM_TYPE_32:
csum32_update(p,len,css);
break;
}
}
uint32_t
csum_get(struct csum_state *css)
{
uint32_t ret;
switch (css->size) {
case CSUM_TYPE_8:
ret = csum8_get(css);
break;
case CSUM_TYPE_16:
ret = csum16_get(css);
break;
case CSUM_TYPE_32:
ret = csum32_get(css);
}
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
image_stat_file(struct image_desc *desc)
{
struct stat st;
int err;
if (desc->file_name == NULL)
return 0;
err = stat(desc->file_name, &st);
if (err){
ERRS("stat failed on %s", desc->file_name);
return ERR_FATAL;
}
if (st.st_size > desc->out_size) {
WARN("file %s is too big, will be truncated to %d bytes\n",
desc->file_name, desc->out_size);
desc->file_size = desc->out_size;
return ERR_INVALID_IMAGE;
}
desc->file_size = st.st_size;
desc->out_size = align(desc->file_size,1);
return 0;
}
int
image_writeout_file(FILE *outfile, struct image_desc *desc,
struct csum_state *css)
{
char buf[FILE_BUF_LEN];
size_t buflen = sizeof(buf);
FILE *f;
size_t len;
int res;
if (desc->file_name == NULL)
return 0;
if (desc->file_size == 0)
return 0;
errno = 0;
f = fopen(desc->file_name,"r");
if (errno) {
ERRS("unable to open file: %s", desc->file_name);
return ERR_FATAL;
}
len = desc->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", desc->file_name);
res = ERR_FATAL;
break;
}
res = write_out_data(outfile, buf, buflen, css);
if (res)
break;
len -= buflen;
}
fclose(f);
return res;
}
int
image_writeout(FILE *outfile, struct image_desc *desc)
{
int res;
struct csum_state css;
size_t padlen;
res = 0;
if (!desc->file_size)
return 0;
DBG(2, "writing image, file=%s, file_size=%d\n",
desc->file_name, desc->file_size);
csum_init(&css, CSUM_TYPE_32);
res = image_writeout_file(outfile, desc, &css);
if (res)
return res;
/* write padding data if neccesary */
padlen = desc->out_size - desc->file_size;
DBG(1,"padding desc, length=%d", padlen);
res = write_out_padding(outfile, padlen, desc->padc, &css);
desc->csum = csum_get(&css);
return res;
}
int
write_out_header(FILE *outfile)
{
union file_hdr tmp;
int res;
errno = 0;
if (fseek(outfile, 0, SEEK_SET) != 0) {
ERRS("fseek failed on output file");
return ERR_FATAL;
}
switch (board->header_type) {
case HEADER_TYPE_CAS:
tmp.cas.type = HOST_TO_LE32(header.cas.type);
tmp.cas.id = HOST_TO_LE32(header.cas.id);
tmp.cas.kernel_offs = HOST_TO_LE32(sizeof(tmp.cas));
tmp.cas.kernel_size = HOST_TO_LE32(kernel_image.out_size);
tmp.cas.kernel_csum = HOST_TO_LE32(kernel_image.csum);
tmp.cas.magic1 = HOST_TO_LE32(CAS_MAGIC1);
tmp.cas.magic2 = HOST_TO_LE32(CAS_MAGIC2);
tmp.cas.magic3 = HOST_TO_LE32(CAS_MAGIC3);
res = write_out_data(outfile, (uint8_t *)&tmp.cas,
sizeof(tmp.cas), NULL);
break;
case HEADER_TYPE_NFS:
tmp.nfs.type = HOST_TO_LE32(header.nfs.type);
tmp.nfs.id = HOST_TO_LE32(header.nfs.id);
tmp.nfs.kernel_offs = HOST_TO_LE32(sizeof(tmp.nfs));
tmp.nfs.kernel_size = HOST_TO_LE32(kernel_image.out_size);
tmp.nfs.kernel_csum = HOST_TO_LE32(kernel_image.csum);
tmp.nfs.fs_offs = HOST_TO_LE32(sizeof(tmp.nfs)
+ kernel_image.out_size);
tmp.nfs.fs_size = HOST_TO_LE32(fs_image.out_size);
tmp.nfs.fs_csum = HOST_TO_LE32(fs_image.csum);
res = write_out_data(outfile, (uint8_t *)&tmp.nfs,
sizeof(tmp.nfs), NULL);
break;
}
return res;
}
int
write_out_images(FILE *outfile)
{
struct image_desc *desc;
int i, res;
res = image_writeout(outfile, &kernel_image);
if (res)
return res;
res = image_writeout(outfile, &fs_image);
if (res)
return res;
return 0;
}
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;
}
switch (board->header_type) {
case HEADER_TYPE_CAS:
header.cas.type = HEADER_TYPE_CAS;
header.cas.id = board->id;
break;
case HEADER_TYPE_NFS:
header.nfs.type = HEADER_TYPE_NFS;
header.nfs.id = board->id;
break;
default:
ERR("internal error, unknown header type\n");
return ERR_FATAL;
}
return 0;
}
int
parse_opt_image(char ch, char *arg)
{
char buf[MAX_ARG_LEN];
char *argv[MAX_ARG_COUNT];
int argc;
char *p;
struct image_desc *desc = NULL;
int i;
switch (ch) {
case 'K':
if (kernel_image.file_name) {
WARN("only one kernel option allowed");
break;
}
desc = &kernel_image;
break;
case 'F':
if (fs_image.file_name) {
WARN("only one fs option allowed");
break;
}
desc = &fs_image;
break;
}
if (!desc)
return ERR_FATAL;
argc = parse_arg(arg, buf, argv);
i = 0;
p = argv[i++];
if (!is_empty_arg(p)) {
desc->file_name = strdup(p);
if (desc->file_name == NULL) {
ERR("not enough memory");
return ERR_FATAL;
}
} else {
ERR("no file specified for option %c", ch);
return ERR_FATAL;
}
return 0;
}
int
process_images(void)
{
struct image_desc *desc;
uint32_t offs = 0;
int i;
int res;
kernel_image.out_size = board->max_kernel_size;
kernel_image.padc = DEFAULT_PADC;
res = image_stat_file(&kernel_image);
if (res)
return res;
if (!fs_image.file_name)
return 0;
fs_image.out_size = board->max_fs_size;
fs_image.padc = DEFAULT_PADC;
res = image_stat_file(&fs_image);
if (res)
return res;
return 0;
}
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:C:dhK:r:vw:x:");
if (c == -1)
break;
switch (c) {
case 'B':
optinvalid = parse_opt_board(c,optarg);
break;
case 'd':
invalid_causes_error = 0;
break;
case 'C':
case 'K':
optinvalid = parse_opt_image(c,optarg);
break;
case 'k':
keep_invalid_images = 1;
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_images();
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_header(outfile) != 0) {
res = ERR_FATAL;
goto out_flush;
}
if (write_out_images(outfile) != 0) {
res = ERR_FATAL;
goto out_flush;
}
if (write_out_header(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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