src/test/test-btrfs.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <fcntl.h>
   4
   5 #include "btrfs-util.h"
   6 #include "fd-util.h"
   7 #include "fileio.h"
   8 #include "log.h"
   9 #include "parse-util.h"
  10 #include "string-util.h"
  11 #include "util.h"
  12
  13 int main(int argc, char *argv[]) {
  14         BtrfsQuotaInfo quota;
  15         int r, fd;
  16
  17         fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY);
  18         if (fd < 0)
  19                 log_error_errno(errno, "Failed to open root directory: %m");
  20         else {
  21                 char ts[FORMAT_TIMESTAMP_MAX], bs[FORMAT_BYTES_MAX];
  22                 BtrfsSubvolInfo info;
  23
  24                 r = btrfs_subvol_get_info_fd(fd, 0, &info);
  25                 if (r < 0)
  26                         log_error_errno(r, "Failed to get subvolume info: %m");
  27                 else {
  28                         log_info("otime: %s", format_timestamp(ts, sizeof(ts), info.otime));
  29                         log_info("read-only (search): %s", yes_no(info.read_only));
  30                 }
  31
  32                 r = btrfs_qgroup_get_quota_fd(fd, 0, &quota);
  33                 if (r < 0)
  34                         log_error_errno(r, "Failed to get quota info: %m");
  35                 else {
  36                         log_info("referenced: %s", strna(format_bytes(bs, sizeof(bs), quota.referenced)));
  37                         log_info("exclusive: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive)));
  38                         log_info("referenced_max: %s", strna(format_bytes(bs, sizeof(bs), quota.referenced_max)));
  39                         log_info("exclusive_max: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive_max)));
  40                 }
  41
  42                 r = btrfs_subvol_get_read_only_fd(fd);
  43                 if (r < 0)
  44                         log_error_errno(r, "Failed to get read only flag: %m");
  45                 else
  46                         log_info("read-only (ioctl): %s", yes_no(r));
  47
  48                 safe_close(fd);
  49         }
  50
  51         r = btrfs_subvol_make("/xxxtest");
  52         if (r < 0)
  53                 log_error_errno(r, "Failed to make subvolume: %m");
  54
  55         r = write_string_file("/xxxtest/afile", "ljsadhfljasdkfhlkjdsfha", WRITE_STRING_FILE_CREATE);
  56         if (r < 0)
  57                 log_error_errno(r, "Failed to write file: %m");
  58
  59         r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest2", 0);
  60         if (r < 0)
  61                 log_error_errno(r, "Failed to make snapshot: %m");
  62
  63         r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest3", BTRFS_SNAPSHOT_READ_ONLY);
  64         if (r < 0)
  65                 log_error_errno(r, "Failed to make snapshot: %m");
  66
  67         r = btrfs_subvol_remove("/xxxtest", BTRFS_REMOVE_QUOTA);
  68         if (r < 0)
  69                 log_error_errno(r, "Failed to remove subvolume: %m");
  70
  71         r = btrfs_subvol_remove("/xxxtest2", BTRFS_REMOVE_QUOTA);
  72         if (r < 0)
  73                 log_error_errno(r, "Failed to remove subvolume: %m");
  74
  75         r = btrfs_subvol_remove("/xxxtest3", BTRFS_REMOVE_QUOTA);
  76         if (r < 0)
  77                 log_error_errno(r, "Failed to remove subvolume: %m");
  78
  79         r = btrfs_subvol_snapshot("/etc", "/etc2", BTRFS_SNAPSHOT_READ_ONLY|BTRFS_SNAPSHOT_FALLBACK_COPY);
  80         if (r < 0)
  81                 log_error_errno(r, "Failed to make snapshot: %m");
  82
  83         r = btrfs_subvol_remove("/etc2", BTRFS_REMOVE_QUOTA);
  84         if (r < 0)
  85                 log_error_errno(r, "Failed to remove subvolume: %m");
  86
  87         r = btrfs_subvol_make("/xxxrectest");
  88         if (r < 0)
  89                 log_error_errno(r, "Failed to make subvolume: %m");
  90
  91         r = btrfs_subvol_make("/xxxrectest/xxxrectest2");
  92         if (r < 0)
  93                 log_error_errno(r, "Failed to make subvolume: %m");
  94
  95         r = btrfs_subvol_make("/xxxrectest/xxxrectest3");
  96         if (r < 0)
  97                 log_error_errno(r, "Failed to make subvolume: %m");
  98
  99         r = btrfs_subvol_make("/xxxrectest/xxxrectest3/sub");
 100         if (r < 0)
 101                 log_error_errno(r, "Failed to make subvolume: %m");
 102
 103         if (mkdir("/xxxrectest/dir", 0755) < 0)
 104                 log_error_errno(errno, "Failed to make directory: %m");
 105
 106         r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4");
 107         if (r < 0)
 108                 log_error_errno(r, "Failed to make subvolume: %m");
 109
 110         if (mkdir("/xxxrectest/dir/xxxrectest4/dir", 0755) < 0)
 111                 log_error_errno(errno, "Failed to make directory: %m");
 112
 113         r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4/dir/xxxrectest5");
 114         if (r < 0)
 115                 log_error_errno(r, "Failed to make subvolume: %m");
 116
 117         if (mkdir("/xxxrectest/mnt", 0755) < 0)
 118                 log_error_errno(errno, "Failed to make directory: %m");
 119
 120         r = btrfs_subvol_snapshot("/xxxrectest", "/xxxrectest2", BTRFS_SNAPSHOT_RECURSIVE);
 121         if (r < 0)
 122                 log_error_errno(r, "Failed to snapshot subvolume: %m");
 123
 124         r = btrfs_subvol_remove("/xxxrectest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
 125         if (r < 0)
 126                 log_error_errno(r, "Failed to recursively remove subvolume: %m");
 127
 128         r = btrfs_subvol_remove("/xxxrectest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
 129         if (r < 0)
 130                 log_error_errno(r, "Failed to recursively remove subvolume: %m");
 131
 132         r = btrfs_subvol_make("/xxxquotatest");
 133         if (r < 0)
 134                 log_error_errno(r, "Failed to make subvolume: %m");
 135
 136         r = btrfs_subvol_auto_qgroup("/xxxquotatest", 0, true);
 137         if (r < 0)
 138                 log_error_errno(r, "Failed to set up auto qgroup: %m");
 139
 140         r = btrfs_subvol_make("/xxxquotatest/beneath");
 141         if (r < 0)
 142                 log_error_errno(r, "Failed to make subvolume: %m");
 143
 144         r = btrfs_subvol_auto_qgroup("/xxxquotatest/beneath", 0, false);
 145         if (r < 0)
 146                 log_error_errno(r, "Failed to set up auto qgroup: %m");
 147
 148         r = btrfs_qgroup_set_limit("/xxxquotatest/beneath", 0, 4ULL * 1024 * 1024 * 1024);
 149         if (r < 0)
 150                 log_error_errno(r, "Failed to set up quota limit: %m");
 151
 152         r = btrfs_subvol_set_subtree_quota_limit("/xxxquotatest", 0, 5ULL * 1024 * 1024 * 1024);
 153         if (r < 0)
 154                 log_error_errno(r, "Failed to set up quota limit: %m");
 155
 156         r = btrfs_subvol_snapshot("/xxxquotatest", "/xxxquotatest2", BTRFS_SNAPSHOT_RECURSIVE|BTRFS_SNAPSHOT_QUOTA);
 157         if (r < 0)
 158                 log_error_errno(r, "Failed to setup snapshot: %m");
 159
 160         r = btrfs_qgroup_get_quota("/xxxquotatest2/beneath", 0, &quota);
 161         if (r < 0)
 162                 log_error_errno(r, "Failed to query quota: %m");
 163
 164         assert_se(quota.referenced_max == 4ULL * 1024 * 1024 * 1024);
 165
 166         r = btrfs_subvol_get_subtree_quota("/xxxquotatest2", 0, &quota);
 167         if (r < 0)
 168                 log_error_errno(r, "Failed to query quota: %m");
 169
 170         assert_se(quota.referenced_max == 5ULL * 1024 * 1024 * 1024);
 171
 172         r = btrfs_subvol_remove("/xxxquotatest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
 173         if (r < 0)
 174                 log_error_errno(r, "Failed remove subvolume: %m");
 175
 176         r = btrfs_subvol_remove("/xxxquotatest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
 177         if (r < 0)
 178                 log_error_errno(r, "Failed remove subvolume: %m");
 179
 180         return 0;
 181 }