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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <stdint.h>
#include <inttypes.h>
#include "gfs_ondisk.h"
#include "copyright.cf"
#define EXTERN
#include "gfs_debug.h"
#include "basic.h"
#include "block_device.h"
#include "readfile.h"
/**
* print_usage - print out usage information
*
*/
static void
print_usage(void)
{
printf("Usage:\n");
printf("\n");
printf("%s [options] <action>\n", prog_name);
printf("\n");
printf("Actions:\n");
printf(" size print the device size\n");
printf(" hexread print a block in hex\n");
printf(" rawread print a block raw\n");
printf("\n");
printf("GFS-specific Actions:\n");
printf(" scan scan the device looking for GFS blocks\n");
printf(" identify identify the contents of a block\n");
printf(" sb print superblock\n");
printf(" jindex print journal index\n");
printf(" rindex print resource index\n");
printf(" quota print quota file\n");
printf(" root print root directory\n");
printf(" readfile print the contents of a file\n");
printf(" readdir print the contents of a directory\n");
printf("\n");
printf("Options:\n");
printf("\n");
printf(" -B <bytes> Set the block size\n");
printf(" -b <number> Block number\n");
printf(" -d <device> Device to look at\n");
printf(" -h Print this help, then exit\n");
printf(" -v Verbose\n");
printf(" -V Print program version information, then exit\n");
}
/**
* decode_arguments -
* @argc:
* @argv:
*
*/
static void
decode_arguments(int argc, char *argv[])
{
int cont = TRUE;
int optchar;
while (cont) {
optchar = getopt(argc, argv, "B:b:d:hVv");
switch (optchar) {
case 'B':
sscanf(optarg, "%u", &block_size);
if (!block_size)
die("can't have a zero block size\n");
break;
case 'b':
sscanf(optarg, "%"SCNu64, &block_number);
break;
case 'd':
device = optarg;
break;
case 'h':
print_usage();
exit(EXIT_SUCCESS);
case 'V':
printf("gfs_mkfs %s (built %s %s)\n", RELEASE_VERSION, __DATE__, __TIME__);
printf("%s\n", REDHAT_COPYRIGHT);
exit(EXIT_SUCCESS);
case 'v':
verbose++;
break;
case EOF:
cont = FALSE;
break;
default:
die("unknown option: %c\n", optchar);
};
}
if (optind < argc) {
action = argv[optind];
optind++;
} else
die("no action specified\n");
if (optind < argc)
die("Unrecognized option: %s\n", argv[optind]);
if (!device)
die("no device specified\n");
}
/**
* main -
* @argc:
* @argv:
*
* Returns: exit status
*/
int
main(int argc, char *argv[])
{
prog_name = argv[0];
decode_arguments(argc, argv);
device_fd = open(device, O_RDWR);
if (device_fd < 0)
die("can't open device %s: %s\n",
device, strerror(errno));
find_device_size();
verify_gfs();
if (!strcmp(action, "size"))
print_size();
else if (!strcmp(action, "hexread"))
print_hexblock();
else if (!strcmp(action, "rawread"))
print_rawblock();
else if (!strcmp(action, "scan"))
scan_device();
else if (!strcmp(action, "identify"))
identify_block();
else if (!strcmp(action, "sb"))
print_superblock();
else if (!strcmp(action, "jindex"))
print_jindex();
else if (!strcmp(action, "rindex"))
print_rindex();
else if (!strcmp(action, "quota"))
print_quota();
else if (!strcmp(action, "root"))
print_root();
else if (!strcmp(action, "readfile"))
readfile();
else if (!strcmp(action, "readdir"))
readdir();
else
die("unknown action %s\n", action);
close(device_fd);
exit(EXIT_SUCCESS);
}

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