/// open device
static void fs_open(char* device)
{
int open_flags;
log_mesg(2, 0, 0, fs_opt.debug, "%s: nilfs_mount\n", __FILE__);
mnt_x = mount(device, mnt_path, "nilfs2", MS_MGC_VAL | MS_RDONLY | MS_NOSUID, "");
open_flags = NILFS_OPEN_RDONLY | NILFS_OPEN_RAW;
nilfs = nilfs_open(device, NULL, open_flags);
if (nilfs == NULL) {
umount(mnt_path);
log_mesg(0, 1, 1, fs_opt.debug, "%s: cannot open NILFS on %s: %m\n", __FILE__, device ? : "device");
}
int main(int argc, char *argv[])
{
struct nilfs *nilfs;
struct nilfs_cpstat cpstat;
char *dev, *progname;
int c, mode, rvs, status, ret;
#ifdef _GNU_SOURCE
int option_index;
#endif /* _GNU_SOURCE */
mode = NILFS_CHECKPOINT;
rvs = 0;
opterr = 0; /* prevent error message */
progname = strrchr(argv[0], '/');
if (progname == NULL)
progname = argv[0];
else
progname++;
#ifdef _GNU_SOURCE
while ((c = getopt_long(argc, argv, "abgrsi:n:hV",
long_option, &option_index)) >= 0) {
#else
while ((c = getopt(argc, argv, "abgrsi:n:hV")) >= 0) {
#endif /* _GNU_SOURCE */
switch (c) {
case 'a':
show_all = 1;
break;
case 'b':
show_block_count = 1;
break;
case 'g':
show_block_count = 0;
break;
case 'r':
rvs = 1;
break;
case 's':
mode = NILFS_SNAPSHOT;
break;
case 'i':
param_index = (__u64)atoll(optarg);
break;
case 'n':
param_lines = (__u64)atoll(optarg);
break;
case 'h':
fprintf(stderr, LSCP_USAGE, progname);
exit(EXIT_SUCCESS);
case 'V':
printf("%s (%s %s)\n", progname, PACKAGE,
PACKAGE_VERSION);
exit(EXIT_SUCCESS);
default:
fprintf(stderr, "%s: invalid option -- %c\n",
progname, optopt);
exit(EXIT_FAILURE);
}
}
if (optind < argc - 1) {
fprintf(stderr, "%s: too many arguments\n", progname);
exit(1);
} else if (optind == argc - 1) {
dev = argv[optind++];
} else {
dev = NULL;
}
nilfs = nilfs_open(dev, NULL, NILFS_OPEN_RDONLY);
if (nilfs == NULL) {
fprintf(stderr, "%s: %s: cannot open NILFS\n",
progname, dev);
exit(EXIT_FAILURE);
}
status = EXIT_SUCCESS;
ret = nilfs_get_cpstat(nilfs, &cpstat);
if (ret < 0)
goto out;
#ifdef CONFIG_PRINT_CPSTAT
lscp_print_cpstat(&cpstat, mode);
#endif
lscp_print_header();
if (mode == NILFS_CHECKPOINT) {
if (!rvs)
ret = lscp_forward_cpinfo(nilfs, &cpstat);
else
ret = lscp_backward_cpinfo(nilfs, &cpstat);
} else {
if (!rvs)
ret = lscp_forward_ssinfo(nilfs, &cpstat);
else
ret = lscp_backward_ssinfo(nilfs, &cpstat);
}
out:
if (ret < 0) {
status = EXIT_FAILURE;
fprintf(stderr, "%s: %s\n", progname, strerror(errno));
}
nilfs_close(nilfs);
exit(status);
}
int main(int argc, char *argv[])
{
struct nilfs *nilfs;
char *dev, *progname;
int c, all, status;
#ifdef _GNU_SOURCE
int option_index;
#endif /* _GNU_SOURCE */
all = 0;
opterr = 0;
progname = strrchr(argv[0], '/');
if (progname == NULL)
progname = argv[0];
else
progname++;
#ifdef _GNU_SOURCE
while ((c = getopt_long(argc, argv, "ai:n:hV",
long_option, &option_index)) >= 0) {
#else /* !_GNU_SOURCE */
while ((c = getopt(argc, argv, "ai:n:hV")) >= 0) {
#endif /* _GNU_SOURCE */
switch (c) {
case 'a':
all = 1;
break;
case 'i':
param_index = (__u64)atoll(optarg);
break;
case 'n':
param_lines = (__u64)atoll(optarg);
break;
case 'h':
fprintf(stderr, LSSU_USAGE, progname);
exit(0);
case 'V':
printf("%s (%s %s)\n", progname, PACKAGE,
PACKAGE_VERSION);
exit(0);
default:
fprintf(stderr, "%s: invalid option -- %c\n",
progname, optopt);
exit(1);
}
}
if (optind > argc - 1) {
dev = NULL;
} else if (optind == argc - 1) {
dev = argv[optind++];
} else {
fprintf(stderr, "%s: too many arguments\n", progname);
exit(1);
}
nilfs = nilfs_open(dev, NULL, NILFS_OPEN_RDONLY);
if (nilfs == NULL) {
fprintf(stderr, "%s: %s: cannot open NILFS\n",
progname, dev);
exit(1);
}
status = lssu_list_suinfo(nilfs, all);
nilfs_close(nilfs);
exit(status);
}
