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3d7415f4 LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2015 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 | ||
a8fbdf54 TA |
22 | #include <errno.h> |
23 | #include <string.h> | |
24 | ||
b5efdb8a | 25 | #include "alloc-util.h" |
8c9cfc28 | 26 | #include "btrfs-util.h" |
bb15fafe | 27 | #include "import-util.h" |
a8fbdf54 TA |
28 | #include "log.h" |
29 | #include "macro.h" | |
bb15fafe | 30 | #include "path-util.h" |
8b43440b | 31 | #include "string-table.h" |
07630cea | 32 | #include "string-util.h" |
3d7415f4 | 33 | #include "util.h" |
3d7415f4 LP |
34 | |
35 | int import_url_last_component(const char *url, char **ret) { | |
36 | const char *e, *p; | |
37 | char *s; | |
38 | ||
39 | e = strchrnul(url, '?'); | |
40 | ||
41 | while (e > url && e[-1] == '/') | |
42 | e--; | |
43 | ||
44 | p = e; | |
45 | while (p > url && p[-1] != '/') | |
46 | p--; | |
47 | ||
48 | if (e <= p) | |
49 | return -EINVAL; | |
50 | ||
51 | s = strndup(p, e - p); | |
52 | if (!s) | |
53 | return -ENOMEM; | |
54 | ||
55 | *ret = s; | |
56 | return 0; | |
57 | } | |
58 | ||
59 | ||
60 | int import_url_change_last_component(const char *url, const char *suffix, char **ret) { | |
61 | const char *e; | |
62 | char *s; | |
63 | ||
64 | assert(url); | |
65 | assert(ret); | |
66 | ||
67 | e = strchrnul(url, '?'); | |
68 | ||
69 | while (e > url && e[-1] == '/') | |
70 | e--; | |
71 | ||
72 | while (e > url && e[-1] != '/') | |
73 | e--; | |
74 | ||
75 | if (e <= url) | |
76 | return -EINVAL; | |
77 | ||
78 | s = new(char, (e - url) + strlen(suffix) + 1); | |
79 | if (!s) | |
80 | return -ENOMEM; | |
81 | ||
82 | strcpy(mempcpy(s, url, e - url), suffix); | |
83 | *ret = s; | |
84 | return 0; | |
85 | } | |
86 | ||
87 | static const char* const import_verify_table[_IMPORT_VERIFY_MAX] = { | |
88 | [IMPORT_VERIFY_NO] = "no", | |
7f444afa | 89 | [IMPORT_VERIFY_CHECKSUM] = "checksum", |
3d7415f4 LP |
90 | [IMPORT_VERIFY_SIGNATURE] = "signature", |
91 | }; | |
92 | ||
93 | DEFINE_STRING_TABLE_LOOKUP(import_verify, ImportVerify); | |
94 | ||
95 | int tar_strip_suffixes(const char *name, char **ret) { | |
96 | const char *e; | |
97 | char *s; | |
98 | ||
99 | e = endswith(name, ".tar"); | |
100 | if (!e) | |
101 | e = endswith(name, ".tar.xz"); | |
102 | if (!e) | |
103 | e = endswith(name, ".tar.gz"); | |
104 | if (!e) | |
105 | e = endswith(name, ".tar.bz2"); | |
106 | if (!e) | |
107 | e = endswith(name, ".tgz"); | |
108 | if (!e) | |
109 | e = strchr(name, 0); | |
110 | ||
111 | if (e <= name) | |
112 | return -EINVAL; | |
113 | ||
114 | s = strndup(name, e - name); | |
115 | if (!s) | |
116 | return -ENOMEM; | |
117 | ||
118 | *ret = s; | |
119 | return 0; | |
120 | } | |
121 | ||
122 | int raw_strip_suffixes(const char *p, char **ret) { | |
123 | ||
124 | static const char suffixes[] = | |
125 | ".xz\0" | |
126 | ".gz\0" | |
127 | ".bz2\0" | |
128 | ".raw\0" | |
129 | ".qcow2\0" | |
130 | ".img\0" | |
131 | ".bin\0"; | |
132 | ||
133 | _cleanup_free_ char *q = NULL; | |
134 | ||
135 | q = strdup(p); | |
136 | if (!q) | |
137 | return -ENOMEM; | |
138 | ||
139 | for (;;) { | |
140 | const char *sfx; | |
141 | bool changed = false; | |
142 | ||
143 | NULSTR_FOREACH(sfx, suffixes) { | |
144 | char *e; | |
145 | ||
146 | e = endswith(q, sfx); | |
147 | if (e) { | |
148 | *e = 0; | |
149 | changed = true; | |
150 | } | |
151 | } | |
152 | ||
153 | if (!changed) | |
154 | break; | |
155 | } | |
156 | ||
157 | *ret = q; | |
158 | q = NULL; | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
8c9cfc28 LP |
163 | int import_assign_pool_quota_and_warn(const char *path) { |
164 | int r; | |
165 | ||
166 | r = btrfs_subvol_auto_qgroup("/var/lib/machines", 0, true); | |
167 | if (r == -ENOTTY) { | |
168 | log_debug_errno(r, "Failed to set up default quota hierarchy for /var/lib/machines, as directory is not on btrfs or not a subvolume. Ignoring."); | |
169 | return 0; | |
170 | } | |
171 | if (r < 0) | |
172 | return log_error_errno(r, "Failed to set up default quota hierarchy for /var/lib/machines: %m"); | |
173 | if (r > 0) | |
174 | log_info("Set up default quota hierarchy for /var/lib/machines."); | |
175 | ||
176 | r = btrfs_subvol_auto_qgroup(path, 0, true); | |
177 | if (r == -ENOTTY) { | |
178 | log_debug_errno(r, "Failed to set up quota hierarchy for %s, as directory is not on btrfs or not a subvolume. Ignoring.", path); | |
179 | return 0; | |
180 | } | |
181 | if (r < 0) | |
182 | return log_error_errno(r, "Failed to set up default quota hierarchy for %s: %m", path); | |
183 | if (r > 0) | |
184 | log_info("Set up default quota hierarchy for %s.", path); | |
185 | ||
186 | return 0; | |
187 | } |