#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <glusterfs/api/glfs.h>
#include <glusterfs/api/glfs-handles.h>
#include <sys/wait.h>

int gfapi = 1;

#define LOG_ERR(func, ret)                                                     \
    do {                                                                       \
        if (ret != 0) {                                                        \
            fprintf(stderr, "%s : returned error %d (%s)\n", func, ret,        \
                    strerror(errno));                                          \
            goto out;                                                          \
        } else {                                                               \
            fprintf(stderr, "%s : returned %d\n", func, ret);                  \
        }                                                                      \
    } while (0)

int
main(int argc, char *argv[])
{
    glfs_t *fs = NULL;
    int ret = 0, i, status = 0;
    glfs_fd_t *fd = NULL;
    char *filename = "file_tmp";
    char *volname = NULL;
    char *logfile = NULL;
    char *hostname = NULL;
    struct flock lock = {
        0,
    };

    if (argc != 4) {
        fprintf(stderr, "Invalid argument\n");
        exit(1);
    }

    hostname = argv[1];
    volname = argv[2];
    logfile = argv[3];

    fs = glfs_new(volname);
    if (!fs) {
        fprintf(stderr, "glfs_new: returned NULL\n");
        return -1;
    }

    ret = glfs_set_volfile_server(fs, "tcp", hostname, 24007);
    LOG_ERR("glfs_set_volfile_server", ret);

    ret = glfs_set_logging(fs, logfile, 7);
    LOG_ERR("glfs_set_logging", ret);

    ret = glfs_init(fs);
    LOG_ERR("glfs_init", ret);

    fd = glfs_creat(fs, filename, O_RDWR | O_SYNC, 0644);
    if (fd <= 0) {
        ret = -1;
        LOG_ERR("glfs_creat", ret);
    }
    fprintf(stderr, "glfs-create fd - %d\n", fd);

    /* validate locks for negative range */
    lock.l_type = F_WRLCK;
    lock.l_whence = SEEK_SET;
    lock.l_start = 10;
    lock.l_len = -9;

    ret = glfs_posix_lock(fd, F_SETLK, &lock);
    LOG_ERR("glfs_posix_lock", ret);

err:
    glfs_close(fd);
    LOG_ERR("glfs_close", ret);

out:
    if (fs) {
        ret = glfs_fini(fs);
        fprintf(stderr, "glfs_fini(fs) returned %d \n", ret);
    }

    if (ret)
        exit(1);
    exit(0);
}