diff options
Diffstat (limited to 'ubi-utils/src/ubicrc32.c')
| -rw-r--r-- | ubi-utils/src/ubicrc32.c | 163 |
1 files changed, 78 insertions, 85 deletions
diff --git a/ubi-utils/src/ubicrc32.c b/ubi-utils/src/ubicrc32.c index 7e3f045..034cb10 100644 --- a/ubi-utils/src/ubicrc32.c +++ b/ubi-utils/src/ubicrc32.c @@ -14,10 +14,12 @@ * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +/* + * Calculate CRC32 with UBI start value (0xFFFFFFFF) for a given binary image. * * Author: Oliver Lohmann - * - * Calculate CRC32 with UBI start value for a given binary image. */ #include <stdio.h> @@ -29,113 +31,104 @@ #include <errno.h> #include <mtd/ubi-header.h> -#include "config.h" #include "crc32.h" +#include "common.h" #define BUFSIZE 4096 -const char *argp_program_version = PACKAGE_VERSION; -const char *argp_program_bug_address = PACKAGE_BUGREPORT; -static char doc[] = "\nVersion: " PACKAGE_VERSION "\n" - "ubicrc32 - calculates the UBI CRC32 value and prints it to stdout.\n"; +#define PROGRAM_VERSION "1.2" +#define PROGRAM_NAME "ubicrc32" -static const char copyright [] __attribute__((unused)) = - "FIXME: insert license type"; /* FIXME */ +static const char *doc = "Version " PROGRAM_VERSION "\n" + PROGRAM_NAME " - a tool to calculate CRC32 with UBI start value (0xFFFFFFFF)"; +static const char *optionsstr = +"-h, --help print help message\n" +"-V, --version print program version"; -static struct argp_option options[] = { - { name: "copyright", key: 'c', arg: NULL, flags: 0, - doc: "Print copyright information.", - group: 1 }, +static const char *usage = +"Usage: " PROGRAM_NAME " <file to calculate CRC32 for> [-h] [--help]"; - { name: NULL, key: 0, arg: NULL, flags: 0, doc: NULL, group: 0 }, +static const struct option long_options[] = { + { .name = "help", .has_arg = 0, .flag = NULL, .val = 'h' }, + { .name = "version", .has_arg = 0, .flag = NULL, .val = 'V' }, + { NULL, 0, NULL, 0}, }; -typedef struct myargs { - FILE* fp_in; - - char *arg1; - char **options; /* [STRING...] */ -} myargs; - -static error_t -parse_opt(int key, char *arg, struct argp_state *state) +static int parse_opt(int argc, char * const argv[]) { - int err = 0; - - myargs *args = state->input; - - switch (key) { - case 'c': - fprintf(stderr, "%s\n", copyright); - exit(0); - break; - case ARGP_KEY_ARG: - args->fp_in = fopen(arg, "rb"); - if ((args->fp_in) == NULL) { - fprintf(stderr, - "Cannot open file %s for input\n", arg); - exit(1); - } - args->arg1 = arg; - args->options = &state->argv[state->next]; - state->next = state->argc; - break; - case ARGP_KEY_END: - if (err) { - fprintf(stderr, "\n"); - argp_usage(state); - exit(1); + while (1) { + int key; + + key = getopt_long(argc, argv, "hV", long_options, NULL); + if (key == -1) + break; + + switch (key) { + case 'h': + fprintf(stderr, "%s\n\n", doc); + fprintf(stderr, "%s\n\n", usage); + fprintf(stderr, "%s\n", optionsstr); + exit(0); + + case 'V': + fprintf(stderr, "%s\n", PROGRAM_VERSION); + exit(0); + + case ':': + errmsg("parameter is missing"); + return -1; + + default: + fprintf(stderr, "Use -h for help\n"); + exit(-1); } - break; - default: - return(ARGP_ERR_UNKNOWN); } return 0; } -static struct argp argp = { - options: options, - parser: parse_opt, - args_doc: "[file]", - doc: doc, - children: NULL, - help_filter: NULL, - argp_domain: NULL, -}; - -int -main(int argc, char **argv) { - int rc = 0; +int main(int argc, char * const argv[]) +{ + int err = 0; uint32_t crc32_table[256]; - uint8_t buf[BUFSIZE]; - size_t read; - uint32_t crc32; - - myargs args = { - .fp_in = stdin, - .arg1 = NULL, - .options = NULL, - }; + uint32_t crc32 = UBI_CRC32_INIT; + char buf[BUFSIZE]; + FILE *fp; + + if (argc > 1) { + fp = fopen(argv[1], "r"); + if (!fp) { + errmsg("cannot open \"%s\"", argv[1]); + perror("fopen"); + return -1; + } + } else + fp = stdin; - argp_parse(&argp, argc, argv, ARGP_IN_ORDER, 0, &args); + err = parse_opt(argc, argv); + if (err) + return err; init_crc32_table(crc32_table); - crc32 = UBI_CRC32_INIT; - while (!feof(args.fp_in)) { - read = fread(buf, 1, BUFSIZE, args.fp_in); - if (ferror(args.fp_in)) { - fprintf(stderr, "I/O Error."); - exit(EXIT_FAILURE); + + while (!feof(fp)) { + size_t read; + + read = fread(buf, 1, BUFSIZE, fp); + if (ferror(fp)) { + errmsg("cannot read input file"); + perror("fread"); + err = -1; + goto out_close; } crc32 = clc_crc32(crc32_table, crc32, buf, read); } - if (args.fp_in != stdin) { - fclose(args.fp_in); - } + printf("0x%08x\n", crc32); - fprintf(stdout, "0x%08x\n", crc32); - return rc; +out_close: + if (fp != stdin) + fclose(fp); + return err; } |