mirror of
https://github.com/koverstreet/bcachefs-tools.git
synced 2025-01-23 00:07:07 +03:00
e8c1cee578
Move make-bcache, probe-bcache, and bcache-super-show functions into a static library called libbcache. Change-Id: Ieed626225e08507a8ccd12f6bb0c07f64480de9b Signed-off-by: Jacob Malevich <jam@daterainc.com>
90 lines
1.5 KiB
C
90 lines
1.5 KiB
C
/*
|
|
* Author: Gabriel de Perthuis <g2p.code@gmail.com>
|
|
*
|
|
* GPLv2
|
|
*/
|
|
|
|
|
|
#define _FILE_OFFSET_BITS 64
|
|
#define __USE_FILE_OFFSET64
|
|
#define _XOPEN_SOURCE 500
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <inttypes.h>
|
|
#include <linux/fs.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <unistd.h>
|
|
#include <uuid/uuid.h>
|
|
|
|
#include "bcache.h"
|
|
|
|
void usage()
|
|
{
|
|
fprintf(stderr, "Usage: bcache-super-show [-f] <device>\n");
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int o;
|
|
extern char *optarg;
|
|
struct cache_sb sb_stack, *sb = &sb_stack;
|
|
size_t bytes = sizeof(*sb);
|
|
bool force_csum = false;
|
|
|
|
while ((o = getopt(argc, argv, "f")) != EOF)
|
|
switch (o) {
|
|
case 'f':
|
|
force_csum = 1;
|
|
break;
|
|
|
|
default:
|
|
usage();
|
|
exit(1);
|
|
}
|
|
|
|
argv += optind;
|
|
argc -= optind;
|
|
|
|
if (argc != 1) {
|
|
usage();
|
|
exit(1);
|
|
}
|
|
|
|
int fd = open(argv[0], O_RDONLY);
|
|
if (fd < 0) {
|
|
printf("Can't open dev %s: %s\n", argv[0], strerror(errno));
|
|
exit(2);
|
|
}
|
|
|
|
if (pread(fd, sb, bytes, SB_START) != bytes) {
|
|
fprintf(stderr, "Couldn't read\n");
|
|
exit(2);
|
|
}
|
|
|
|
if (sb->keys) {
|
|
bytes = sizeof(*sb) + sb->keys * sizeof(uint64_t);
|
|
sb = malloc(bytes);
|
|
|
|
if (pread(fd, sb, bytes, SB_START) != bytes) {
|
|
fprintf(stderr, "Couldn't read\n");
|
|
exit(2);
|
|
}
|
|
}
|
|
|
|
if (!SB_IS_BDEV(sb))
|
|
show_super_cache(sb, force_csum);
|
|
else
|
|
show_super_backingdev(sb, force_csum);
|
|
|
|
return 0;
|
|
}
|