static int dkr_pull_job_on_open_disk(PullJob *j) {
const char *base;
DkrPull *i;
int r;
assert(j);
assert(j->userdata);
i = j->userdata;
assert(i->layer_job == j);
assert(i->final_path);
assert(!i->temp_path);
assert(i->tar_pid <= 0);
r = tempfn_random(i->final_path, &i->temp_path);
if (r < 0)
return log_oom();
mkdir_parents_label(i->temp_path, 0700);
base = dkr_pull_current_base_layer(i);
if (base) {
const char *base_path;
base_path = strjoina(i->image_root, "/.dkr-", base);
r = btrfs_subvol_snapshot(base_path, i->temp_path, BTRFS_SNAPSHOT_FALLBACK_COPY);
} else
r = btrfs_subvol_make(i->temp_path);
if (r < 0)
return log_error_errno(r, "Failed to make btrfs subvolume %s: %m", i->temp_path);
j->disk_fd = import_fork_tar_x(i->temp_path, &i->tar_pid);
if (j->disk_fd < 0)
return j->disk_fd;
return 0;
}
int main(int argc, char *argv[]) {
BtrfsQuotaInfo quota;
int r, fd;
fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
if (fd < 0)
log_error_errno(errno, "Failed to open root directory: %m");
else {
char ts[FORMAT_TIMESTAMP_MAX], bs[FORMAT_BYTES_MAX];
BtrfsSubvolInfo info;
r = btrfs_subvol_get_info_fd(fd, 0, &info);
if (r < 0)
log_error_errno(r, "Failed to get subvolume info: %m");
else {
log_info("otime: %s", format_timestamp(ts, sizeof(ts), info.otime));
log_info("read-only (search): %s", yes_no(info.read_only));
}
r = btrfs_qgroup_get_quota_fd(fd, 0, "a);
if (r < 0)
log_error_errno(r, "Failed to get quota info: %m");
else {
log_info("referenced: %s", strna(format_bytes(bs, sizeof(bs), quota.referenced)));
log_info("exclusive: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive)));
log_info("referenced_max: %s", strna(format_bytes(bs, sizeof(bs), quota.referenced_max)));
log_info("exclusive_max: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive_max)));
}
r = btrfs_subvol_get_read_only_fd(fd);
if (r < 0)
log_error_errno(r, "Failed to get read only flag: %m");
else
log_info("read-only (ioctl): %s", yes_no(r));
safe_close(fd);
}
r = btrfs_subvol_make("/xxxtest");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
r = write_string_file("/xxxtest/afile", "ljsadhfljasdkfhlkjdsfha", WRITE_STRING_FILE_CREATE);
if (r < 0)
log_error_errno(r, "Failed to write file: %m");
r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest2", 0);
if (r < 0)
log_error_errno(r, "Failed to make snapshot: %m");
r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest3", BTRFS_SNAPSHOT_READ_ONLY);
if (r < 0)
log_error_errno(r, "Failed to make snapshot: %m");
r = btrfs_subvol_remove("/xxxtest", BTRFS_REMOVE_QUOTA);
if (r < 0)
log_error_errno(r, "Failed to remove subvolume: %m");
r = btrfs_subvol_remove("/xxxtest2", BTRFS_REMOVE_QUOTA);
if (r < 0)
log_error_errno(r, "Failed to remove subvolume: %m");
r = btrfs_subvol_remove("/xxxtest3", BTRFS_REMOVE_QUOTA);
if (r < 0)
log_error_errno(r, "Failed to remove subvolume: %m");
r = btrfs_subvol_snapshot("/etc", "/etc2", BTRFS_SNAPSHOT_READ_ONLY|BTRFS_SNAPSHOT_FALLBACK_COPY);
if (r < 0)
log_error_errno(r, "Failed to make snapshot: %m");
r = btrfs_subvol_remove("/etc2", BTRFS_REMOVE_QUOTA);
if (r < 0)
log_error_errno(r, "Failed to remove subvolume: %m");
r = btrfs_subvol_make("/xxxrectest");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
r = btrfs_subvol_make("/xxxrectest/xxxrectest2");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
r = btrfs_subvol_make("/xxxrectest/xxxrectest3");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
r = btrfs_subvol_make("/xxxrectest/xxxrectest3/sub");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
if (mkdir("/xxxrectest/dir", 0755) < 0)
log_error_errno(errno, "Failed to make directory: %m");
r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
if (mkdir("/xxxrectest/dir/xxxrectest4/dir", 0755) < 0)
log_error_errno(errno, "Failed to make directory: %m");
r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4/dir/xxxrectest5");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
if (mkdir("/xxxrectest/mnt", 0755) < 0)
log_error_errno(errno, "Failed to make directory: %m");
r = btrfs_subvol_snapshot("/xxxrectest", "/xxxrectest2", BTRFS_SNAPSHOT_RECURSIVE);
if (r < 0)
log_error_errno(r, "Failed to snapshot subvolume: %m");
r = btrfs_subvol_remove("/xxxrectest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
if (r < 0)
log_error_errno(r, "Failed to recursively remove subvolume: %m");
r = btrfs_subvol_remove("/xxxrectest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
if (r < 0)
log_error_errno(r, "Failed to recursively remove subvolume: %m");
r = btrfs_subvol_make("/xxxquotatest");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
r = btrfs_subvol_auto_qgroup("/xxxquotatest", 0, true);
if (r < 0)
log_error_errno(r, "Failed to set up auto qgroup: %m");
r = btrfs_subvol_make("/xxxquotatest/beneath");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
r = btrfs_subvol_auto_qgroup("/xxxquotatest/beneath", 0, false);
if (r < 0)
log_error_errno(r, "Failed to set up auto qgroup: %m");
r = btrfs_qgroup_set_limit("/xxxquotatest/beneath", 0, 4ULL * 1024 * 1024 * 1024);
if (r < 0)
log_error_errno(r, "Failed to set up quota limit: %m");
r = btrfs_subvol_set_subtree_quota_limit("/xxxquotatest", 0, 5ULL * 1024 * 1024 * 1024);
if (r < 0)
log_error_errno(r, "Failed to set up quota limit: %m");
r = btrfs_subvol_snapshot("/xxxquotatest", "/xxxquotatest2", BTRFS_SNAPSHOT_RECURSIVE|BTRFS_SNAPSHOT_QUOTA);
if (r < 0)
log_error_errno(r, "Failed to setup snapshot: %m");
r = btrfs_qgroup_get_quota("/xxxquotatest2/beneath", 0, "a);
if (r < 0)
log_error_errno(r, "Failed to query quota: %m");
assert_se(quota.referenced_max == 4ULL * 1024 * 1024 * 1024);
r = btrfs_subvol_get_subtree_quota("/xxxquotatest2", 0, "a);
if (r < 0)
log_error_errno(r, "Failed to query quota: %m");
assert_se(quota.referenced_max == 5ULL * 1024 * 1024 * 1024);
r = btrfs_subvol_remove("/xxxquotatest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
if (r < 0)
log_error_errno(r, "Failed remove subvolume: %m");
r = btrfs_subvol_remove("/xxxquotatest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
if (r < 0)
log_error_errno(r, "Failed remove subvolume: %m");
return 0;
}
int main(int argc, char *argv[]) {
int r;
int fd;
fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
if (fd < 0)
log_error_errno(errno, "Failed to open root directory: %m");
else {
BtrfsSubvolInfo info;
BtrfsQuotaInfo quota;
char ts[FORMAT_TIMESTAMP_MAX], bs[FORMAT_BYTES_MAX];
r = btrfs_subvol_get_info_fd(fd, &info);
if (r < 0)
log_error_errno(r, "Failed to get subvolume info: %m");
else {
log_info("otime: %s", format_timestamp(ts, sizeof(ts), info.otime));
log_info("read-only (search): %s", yes_no(info.read_only));
}
r = btrfs_subvol_get_quota_fd(fd, "a);
if (r < 0)
log_error_errno(r, "Failed to get quota info: %m");
else {
log_info("referred: %s", strna(format_bytes(bs, sizeof(bs), quota.referred)));
log_info("exclusive: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive)));
log_info("referred_max: %s", strna(format_bytes(bs, sizeof(bs), quota.referred_max)));
log_info("exclusive_max: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive_max)));
}
r = btrfs_subvol_get_read_only_fd(fd);
if (r < 0)
log_error_errno(r, "Failed to get read only flag: %m");
else
log_info("read-only (ioctl): %s", yes_no(r));
safe_close(fd);
}
r = btrfs_subvol_make("/xxxtest");
if (r < 0)
log_error_errno(r, "Failed to make subvolume: %m");
r = write_string_file("/xxxtest/afile", "ljsadhfljasdkfhlkjdsfha");
if (r < 0)
log_error_errno(r, "Failed to write file: %m");
r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest2", false, false);
if (r < 0)
log_error_errno(r, "Failed to make snapshot: %m");
r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest3", true, false);
if (r < 0)
log_error_errno(r, "Failed to make snapshot: %m");
r = btrfs_subvol_remove("/xxxtest");
if (r < 0)
log_error_errno(r, "Failed to remove subvolume: %m");
r = btrfs_subvol_remove("/xxxtest2");
if (r < 0)
log_error_errno(r, "Failed to remove subvolume: %m");
r = btrfs_subvol_remove("/xxxtest3");
if (r < 0)
log_error_errno(r, "Failed to remove subvolume: %m");
r = btrfs_subvol_snapshot("/etc", "/etc2", true, true);
if (r < 0)
log_error_errno(r, "Failed to make snapshot: %m");
r = btrfs_subvol_remove("/etc2");
if (r < 0)
log_error_errno(r, "Failed to remove subvolume: %m");
return 0;
}
