zdbfs-stats-debug.c

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>

typedef struct stats_t {
    size_t fuse_reqs;

    size_t cache_hit;
    size_t cache_miss;
    size_t cache_full;
    size_t cache_linear_flush;
    size_t cache_random_flush;

    size_t syscall_getattr;
    size_t syscall_setattr;
    size_t syscall_create;
    size_t syscall_readdir;
    size_t syscall_open;
    size_t syscall_read;
    size_t syscall_write;
    size_t syscall_mkdir;
    size_t syscall_unlink;
    size_t syscall_rmdir;
    size_t syscall_rename;
    size_t syscall_link;
    size_t syscall_symlink;
    size_t syscall_statsfs;
    size_t syscall_ioctl;

    size_t read_bytes;
    size_t write_bytes;

    size_t errors;

} stats_t;

#define ZDBFS_IOCTL_SNAPSHOT      _IOR('E', 0, uint64_t)
#define ZDBFS_IOCTL_STATISTICS    _IOR('E', 1, stats_t)

int main(int argc, char *argv[]) {
    char *path;
    int fd;
    int ret = 0;
    uint64_t snapid;
    stats_t stats;

    if(argc < 2) {
        fprintf(stderr, "[-] missing target path\n");
        exit(EXIT_FAILURE);
    }

    path = argv[1];

    if((fd = open(path, O_RDONLY)) < 0) {
        perror(path);
        exit(EXIT_FAILURE);
    }

    if((ret = ioctl(fd, ZDBFS_IOCTL_STATISTICS, &stats))) {
        perror("ioctl");
        exit(EXIT_FAILURE);
    }

    printf(">> cache_hit      : %lu\n", stats.cache_hit);
    printf(">> cache_miss     : %lu\n", stats.cache_miss);
    printf(">> cache_full     : %lu\n", stats.cache_full);
    printf(">> cache_linear_fl: %lu\n", stats.cache_linear_flush);
    printf(">> cache_random_fl: %lu\n", stats.cache_random_flush);
    printf(">> syscall_getattr: %lu\n", stats.syscall_getattr);
    printf(">> syscall_setattr: %lu\n", stats.syscall_setattr);
    printf(">> syscall_create : %lu\n", stats.syscall_create);
    printf(">> syscall_readdir: %lu\n", stats.syscall_readdir);
    printf(">> syscall_open   : %lu\n", stats.syscall_open);
    printf(">> syscall_read   : %lu\n", stats.syscall_read);
    printf(">> syscall_write  : %lu\n", stats.syscall_write);
    printf(">> syscall_mkdir  : %lu\n", stats.syscall_mkdir);
    printf(">> syscall_unlink : %lu\n", stats.syscall_unlink);
    printf(">> syscall_rmdir  : %lu\n", stats.syscall_rmdir);
    printf(">> syscall_rename : %lu\n", stats.syscall_rename);
    printf(">> syscall_link   : %lu\n", stats.syscall_link);
    printf(">> syscall_symlink: %lu\n", stats.syscall_symlink);
    printf(">> syscall_statsf : %lu\n", stats.syscall_statsfs);
    printf(">> syscall_ioctl  : %lu\n", stats.syscall_ioctl);
    printf(">> read_bytes     : %lu\n", stats.read_bytes);
    printf(">> write_bytes    : %lu\n", stats.write_bytes);
    printf(">> errors         : %lu\n", stats.errors);

    close(fd);

    return 0;
}