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("/xxxtest", "/xxxtest2", 0);
  58         if (r < 0)
  59                 log_error_errno(r, "Failed to make snapshot: %m");
  60
  61         r = btrfs_subvol_snapshot("/xxxtest", "/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("/etc", "/etc2", BTRFS_SNAPSHOT_READ_ONLY|BTRFS_SNAPSHOT_FALLBACK_COPY);
  78         if (r < 0)
  79                 log_error_errno(r, "Failed to make snapshot: %m");
  80
  81         r = btrfs_subvol_remove("/etc2", BTRFS_REMOVE_QUOTA);
  82         if (r < 0)
  83                 log_error_errno(r, "Failed to remove subvolume: %m");
  84
  85         r = btrfs_subvol_make("/xxxrectest");
  86         if (r < 0)
  87                 log_error_errno(r, "Failed to make subvolume: %m");
  88
  89         r = btrfs_subvol_make("/xxxrectest/xxxrectest2");
  90         if (r < 0)
  91                 log_error_errno(r, "Failed to make subvolume: %m");
  92
  93         r = btrfs_subvol_make("/xxxrectest/xxxrectest3");
  94         if (r < 0)
  95                 log_error_errno(r, "Failed to make subvolume: %m");
  96
  97         r = btrfs_subvol_make("/xxxrectest/xxxrectest3/sub");
  98         if (r < 0)
  99                 log_error_errno(r, "Failed to make subvolume: %m");
 100
 101         if (mkdir("/xxxrectest/dir", 0755) < 0)
 102                 log_error_errno(errno, "Failed to make directory: %m");
 103
 104         r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4");
 105         if (r < 0)
 106                 log_error_errno(r, "Failed to make subvolume: %m");
 107
 108         if (mkdir("/xxxrectest/dir/xxxrectest4/dir", 0755) < 0)
 109                 log_error_errno(errno, "Failed to make directory: %m");
 110
 111         r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4/dir/xxxrectest5");
 112         if (r < 0)
 113                 log_error_errno(r, "Failed to make subvolume: %m");
 114
 115         if (mkdir("/xxxrectest/mnt", 0755) < 0)
 116                 log_error_errno(errno, "Failed to make directory: %m");
 117
 118         r = btrfs_subvol_snapshot("/xxxrectest", "/xxxrectest2", BTRFS_SNAPSHOT_RECURSIVE);
 119         if (r < 0)
 120                 log_error_errno(r, "Failed to snapshot subvolume: %m");
 121
 122         r = btrfs_subvol_remove("/xxxrectest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
 123         if (r < 0)
 124                 log_error_errno(r, "Failed to recursively remove subvolume: %m");
 125
 126         r = btrfs_subvol_remove("/xxxrectest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
 127         if (r < 0)
 128                 log_error_errno(r, "Failed to recursively remove subvolume: %m");
 129
 130         r = btrfs_subvol_make("/xxxquotatest");
 131         if (r < 0)
 132                 log_error_errno(r, "Failed to make subvolume: %m");
 133
 134         r = btrfs_subvol_auto_qgroup("/xxxquotatest", 0, true);
 135         if (r < 0)
 136                 log_error_errno(r, "Failed to set up auto qgroup: %m");
 137
 138         r = btrfs_subvol_make("/xxxquotatest/beneath");
 139         if (r < 0)
 140                 log_error_errno(r, "Failed to make subvolume: %m");
 141
 142         r = btrfs_subvol_auto_qgroup("/xxxquotatest/beneath", 0, false);
 143         if (r < 0)
 144                 log_error_errno(r, "Failed to set up auto qgroup: %m");
 145
 146         r = btrfs_qgroup_set_limit("/xxxquotatest/beneath", 0, 4ULL * 1024 * 1024 * 1024);
 147         if (r < 0)
 148                 log_error_errno(r, "Failed to set up quota limit: %m");
 149
 150         r = btrfs_subvol_set_subtree_quota_limit("/xxxquotatest", 0, 5ULL * 1024 * 1024 * 1024);
 151         if (r < 0)
 152                 log_error_errno(r, "Failed to set up quota limit: %m");
 153
 154         r = btrfs_subvol_snapshot("/xxxquotatest", "/xxxquotatest2", BTRFS_SNAPSHOT_RECURSIVE|BTRFS_SNAPSHOT_QUOTA);
 155         if (r < 0)
 156                 log_error_errno(r, "Failed to set up snapshot: %m");
 157
 158         r = btrfs_qgroup_get_quota("/xxxquotatest2/beneath", 0, &quota);
 159         if (r < 0)
 160                 log_error_errno(r, "Failed to query quota: %m");
 161
 162         assert_se(quota.referenced_max == 4ULL * 1024 * 1024 * 1024);
 163
 164         r = btrfs_subvol_get_subtree_quota("/xxxquotatest2", 0, &quota);
 165         if (r < 0)
 166                 log_error_errno(r, "Failed to query quota: %m");
 167
 168         assert_se(quota.referenced_max == 5ULL * 1024 * 1024 * 1024);
 169
 170         r = btrfs_subvol_remove("/xxxquotatest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
 171         if (r < 0)
 172                 log_error_errno(r, "Failed remove subvolume: %m");
 173
 174         r = btrfs_subvol_remove("/xxxquotatest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE);
 175         if (r < 0)
 176                 log_error_errno(r, "Failed remove subvolume: %m");
 177
 178         return 0;
 179 }