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// SPDX-License-Identifier: GPL-2.0
#include <fcntl.h>
#include <linux/fs.h>
#include <stdio.h>
#include <sys/ioctl.h>
int main(int argc, char **argv)
{
struct logical_block_metadata_cap cap = {};
const char *filename;
int fd;
int result;
if (argc != 2) {
fprintf(stderr, "Usage: %s BLOCK_DEVICE\n", argv[0]);
return 1;
}
filename = argv[1];
fd = open(filename, O_RDONLY);
if (fd < 0) {
perror(filename);
return 1;
}
result = ioctl(fd, FS_IOC_GETLBMD_CAP, &cap);
if (result < 0) {
perror("ioctl");
return 1;
}
printf("metadata_size: %u\n", cap.lbmd_size);
printf("pi_offset: %u\n", cap.lbmd_pi_offset);
printf("pi_tuple_size: %u\n", cap.lbmd_pi_size);
return 0;
}
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