src/test/test-btrfs.c

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