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d7c7c334 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
10f9c755 | 22 | #include <fcntl.h> |
d7c7c334 | 23 | |
10f9c755 | 24 | #include "btrfs-util.h" |
3ffd4af2 LP |
25 | #include "fd-util.h" |
26 | #include "fileio.h" | |
27 | #include "log.h" | |
6bedfcbb | 28 | #include "parse-util.h" |
07630cea | 29 | #include "string-util.h" |
3ffd4af2 | 30 | #include "util.h" |
d7c7c334 LP |
31 | |
32 | int main(int argc, char *argv[]) { | |
5bcd08db | 33 | BtrfsQuotaInfo quota; |
d9e2daaf | 34 | int r, fd; |
10f9c755 LP |
35 | |
36 | fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY); | |
37 | if (fd < 0) | |
38 | log_error_errno(errno, "Failed to open root directory: %m"); | |
39 | else { | |
b6b18498 | 40 | char ts[FORMAT_TIMESTAMP_MAX], bs[FORMAT_BYTES_MAX]; |
5bcd08db | 41 | BtrfsSubvolInfo info; |
c75f27ea | 42 | |
5bcd08db | 43 | r = btrfs_subvol_get_info_fd(fd, 0, &info); |
10f9c755 LP |
44 | if (r < 0) |
45 | log_error_errno(r, "Failed to get subvolume info: %m"); | |
46 | else { | |
47 | log_info("otime: %s", format_timestamp(ts, sizeof(ts), info.otime)); | |
c75f27ea | 48 | log_info("read-only (search): %s", yes_no(info.read_only)); |
10f9c755 LP |
49 | } |
50 | ||
5bcd08db | 51 | r = btrfs_qgroup_get_quota_fd(fd, 0, "a); |
b6b18498 LP |
52 | if (r < 0) |
53 | log_error_errno(r, "Failed to get quota info: %m"); | |
54 | else { | |
cb81cd80 | 55 | log_info("referenced: %s", strna(format_bytes(bs, sizeof(bs), quota.referenced))); |
b6b18498 | 56 | log_info("exclusive: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive))); |
cb81cd80 | 57 | log_info("referenced_max: %s", strna(format_bytes(bs, sizeof(bs), quota.referenced_max))); |
b6b18498 LP |
58 | log_info("exclusive_max: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive_max))); |
59 | } | |
60 | ||
10f9c755 | 61 | r = btrfs_subvol_get_read_only_fd(fd); |
c75f27ea LP |
62 | if (r < 0) |
63 | log_error_errno(r, "Failed to get read only flag: %m"); | |
64 | else | |
65 | log_info("read-only (ioctl): %s", yes_no(r)); | |
10f9c755 | 66 | |
c75f27ea | 67 | safe_close(fd); |
10f9c755 | 68 | } |
d7c7c334 LP |
69 | |
70 | r = btrfs_subvol_make("/xxxtest"); | |
71 | if (r < 0) | |
72 | log_error_errno(r, "Failed to make subvolume: %m"); | |
73 | ||
4c1fc3e4 | 74 | r = write_string_file("/xxxtest/afile", "ljsadhfljasdkfhlkjdsfha", WRITE_STRING_FILE_CREATE); |
d7c7c334 LP |
75 | if (r < 0) |
76 | log_error_errno(r, "Failed to write file: %m"); | |
77 | ||
e9bc1871 | 78 | r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest2", 0); |
d7c7c334 LP |
79 | if (r < 0) |
80 | log_error_errno(r, "Failed to make snapshot: %m"); | |
81 | ||
e9bc1871 | 82 | r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest3", BTRFS_SNAPSHOT_READ_ONLY); |
d7c7c334 LP |
83 | if (r < 0) |
84 | log_error_errno(r, "Failed to make snapshot: %m"); | |
85 | ||
5bcd08db | 86 | r = btrfs_subvol_remove("/xxxtest", BTRFS_REMOVE_QUOTA); |
d7c7c334 LP |
87 | if (r < 0) |
88 | log_error_errno(r, "Failed to remove subvolume: %m"); | |
89 | ||
5bcd08db | 90 | r = btrfs_subvol_remove("/xxxtest2", BTRFS_REMOVE_QUOTA); |
d7c7c334 LP |
91 | if (r < 0) |
92 | log_error_errno(r, "Failed to remove subvolume: %m"); | |
93 | ||
5bcd08db | 94 | r = btrfs_subvol_remove("/xxxtest3", BTRFS_REMOVE_QUOTA); |
d7c7c334 LP |
95 | if (r < 0) |
96 | log_error_errno(r, "Failed to remove subvolume: %m"); | |
97 | ||
e9bc1871 | 98 | r = btrfs_subvol_snapshot("/etc", "/etc2", BTRFS_SNAPSHOT_READ_ONLY|BTRFS_SNAPSHOT_FALLBACK_COPY); |
d7c7c334 LP |
99 | if (r < 0) |
100 | log_error_errno(r, "Failed to make snapshot: %m"); | |
101 | ||
5bcd08db | 102 | r = btrfs_subvol_remove("/etc2", BTRFS_REMOVE_QUOTA); |
d7c7c334 LP |
103 | if (r < 0) |
104 | log_error_errno(r, "Failed to remove subvolume: %m"); | |
105 | ||
d9e2daaf LP |
106 | r = btrfs_subvol_make("/xxxrectest"); |
107 | if (r < 0) | |
108 | log_error_errno(r, "Failed to make subvolume: %m"); | |
109 | ||
110 | r = btrfs_subvol_make("/xxxrectest/xxxrectest2"); | |
111 | if (r < 0) | |
112 | log_error_errno(r, "Failed to make subvolume: %m"); | |
113 | ||
114 | r = btrfs_subvol_make("/xxxrectest/xxxrectest3"); | |
115 | if (r < 0) | |
116 | log_error_errno(r, "Failed to make subvolume: %m"); | |
117 | ||
118 | r = btrfs_subvol_make("/xxxrectest/xxxrectest3/sub"); | |
119 | if (r < 0) | |
120 | log_error_errno(r, "Failed to make subvolume: %m"); | |
121 | ||
122 | if (mkdir("/xxxrectest/dir", 0755) < 0) | |
123 | log_error_errno(errno, "Failed to make directory: %m"); | |
124 | ||
125 | r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4"); | |
126 | if (r < 0) | |
127 | log_error_errno(r, "Failed to make subvolume: %m"); | |
128 | ||
129 | if (mkdir("/xxxrectest/dir/xxxrectest4/dir", 0755) < 0) | |
130 | log_error_errno(errno, "Failed to make directory: %m"); | |
131 | ||
132 | r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4/dir/xxxrectest5"); | |
133 | if (r < 0) | |
134 | log_error_errno(r, "Failed to make subvolume: %m"); | |
135 | ||
136 | if (mkdir("/xxxrectest/mnt", 0755) < 0) | |
137 | log_error_errno(errno, "Failed to make directory: %m"); | |
138 | ||
f70a17f8 LP |
139 | r = btrfs_subvol_snapshot("/xxxrectest", "/xxxrectest2", BTRFS_SNAPSHOT_RECURSIVE); |
140 | if (r < 0) | |
141 | log_error_errno(r, "Failed to snapshot subvolume: %m"); | |
142 | ||
5bcd08db | 143 | r = btrfs_subvol_remove("/xxxrectest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE); |
d9e2daaf LP |
144 | if (r < 0) |
145 | log_error_errno(r, "Failed to recursively remove subvolume: %m"); | |
146 | ||
5bcd08db | 147 | r = btrfs_subvol_remove("/xxxrectest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE); |
f70a17f8 LP |
148 | if (r < 0) |
149 | log_error_errno(r, "Failed to recursively remove subvolume: %m"); | |
150 | ||
5bcd08db LP |
151 | r = btrfs_subvol_make("/xxxquotatest"); |
152 | if (r < 0) | |
153 | log_error_errno(r, "Failed to make subvolume: %m"); | |
154 | ||
155 | r = btrfs_subvol_auto_qgroup("/xxxquotatest", 0, true); | |
156 | if (r < 0) | |
157 | log_error_errno(r, "Failed to set up auto qgroup: %m"); | |
158 | ||
159 | r = btrfs_subvol_make("/xxxquotatest/beneath"); | |
160 | if (r < 0) | |
161 | log_error_errno(r, "Failed to make subvolume: %m"); | |
162 | ||
163 | r = btrfs_subvol_auto_qgroup("/xxxquotatest/beneath", 0, false); | |
164 | if (r < 0) | |
165 | log_error_errno(r, "Failed to set up auto qgroup: %m"); | |
166 | ||
167 | r = btrfs_qgroup_set_limit("/xxxquotatest/beneath", 0, 4ULL * 1024 * 1024 * 1024); | |
168 | if (r < 0) | |
169 | log_error_errno(r, "Failed to set up quota limit: %m"); | |
170 | ||
171 | r = btrfs_subvol_set_subtree_quota_limit("/xxxquotatest", 0, 5ULL * 1024 * 1024 * 1024); | |
172 | if (r < 0) | |
173 | log_error_errno(r, "Failed to set up quota limit: %m"); | |
174 | ||
175 | r = btrfs_subvol_snapshot("/xxxquotatest", "/xxxquotatest2", BTRFS_SNAPSHOT_RECURSIVE|BTRFS_SNAPSHOT_QUOTA); | |
176 | if (r < 0) | |
177 | log_error_errno(r, "Failed to setup snapshot: %m"); | |
178 | ||
179 | r = btrfs_qgroup_get_quota("/xxxquotatest2/beneath", 0, "a); | |
180 | if (r < 0) | |
181 | log_error_errno(r, "Failed to query quota: %m"); | |
182 | ||
183 | assert_se(quota.referenced_max == 4ULL * 1024 * 1024 * 1024); | |
184 | ||
185 | r = btrfs_subvol_get_subtree_quota("/xxxquotatest2", 0, "a); | |
186 | if (r < 0) | |
187 | log_error_errno(r, "Failed to query quota: %m"); | |
188 | ||
189 | assert_se(quota.referenced_max == 5ULL * 1024 * 1024 * 1024); | |
190 | ||
191 | r = btrfs_subvol_remove("/xxxquotatest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE); | |
192 | if (r < 0) | |
193 | log_error_errno(r, "Failed remove subvolume: %m"); | |
194 | ||
195 | r = btrfs_subvol_remove("/xxxquotatest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE); | |
196 | if (r < 0) | |
197 | log_error_errno(r, "Failed remove subvolume: %m"); | |
198 | ||
d7c7c334 LP |
199 | return 0; |
200 | } |