1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
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.
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.
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/>.
26 #include <sys/statvfs.h>
29 #include "systemd/sd-id128.h"
31 #include "condition-util.h"
33 #include "path-util.h"
36 #include "architecture.h"
38 Condition* condition_new(ConditionType type, const char *parameter, bool trigger, bool negate) {
41 assert(type < _CONDITION_TYPE_MAX);
43 c = new0(Condition, 1);
52 c->parameter = strdup(parameter);
62 void condition_free(Condition *c) {
69 void condition_free_list(Condition *first) {
72 LIST_FOREACH_SAFE(conditions, c, n, first)
76 bool condition_test_kernel_command_line(Condition *c) {
77 _cleanup_free_ char *line = NULL;
84 assert(c->type == CONDITION_KERNEL_COMMAND_LINE);
86 r = proc_cmdline(&line);
88 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
92 equal = !!strchr(c->parameter, '=');
96 _cleanup_free_ char *word = NULL;
99 r = unquote_first_word(&p, &word);
104 found = streq(word, c->parameter);
108 f = startswith(word, c->parameter);
109 found = f && (*f == '=' || *f == 0);
119 bool condition_test_virtualization(Condition *c) {
124 assert(c->parameter);
125 assert(c->type == CONDITION_VIRTUALIZATION);
127 v = detect_virtualization(&id);
129 log_warning("Failed to detect virtualization, ignoring: %s", strerror(-v));
133 /* First, compare with yes/no */
134 b = parse_boolean(c->parameter);
139 if (v == 0 && b == 0)
142 /* Then, compare categorization */
143 if (v == VIRTUALIZATION_VM && streq(c->parameter, "vm"))
146 if (v == VIRTUALIZATION_CONTAINER && streq(c->parameter, "container"))
149 /* Finally compare id */
150 return (v > 0 && streq(c->parameter, id)) == !c->negate;
153 bool condition_test_architecture(Condition *c) {
157 assert(c->parameter);
158 assert(c->type == CONDITION_ARCHITECTURE);
160 a = uname_architecture();
164 if (streq(c->parameter, "native"))
165 b = native_architecture();
167 b = architecture_from_string(c->parameter);
172 return (a == b) == !c->negate;
175 bool condition_test_host(Condition *c) {
176 _cleanup_free_ char *h = NULL;
181 assert(c->parameter);
182 assert(c->type == CONDITION_HOST);
184 if (sd_id128_from_string(c->parameter, &x) >= 0) {
186 r = sd_id128_get_machine(&y);
190 return sd_id128_equal(x, y) == !c->negate;
193 h = gethostname_malloc();
197 return (fnmatch(c->parameter, h, FNM_CASEFOLD) == 0) == !c->negate;
200 bool condition_test_ac_power(Condition *c) {
204 assert(c->parameter);
205 assert(c->type == CONDITION_AC_POWER);
207 r = parse_boolean(c->parameter);
211 return ((on_ac_power() != 0) == !!r) == !c->negate;
214 void condition_dump(Condition *c, FILE *f, const char *prefix) {
222 "%s\t%s: %s%s%s %s\n",
224 condition_type_to_string(c->type),
225 c->trigger ? "|" : "",
226 c->negate ? "!" : "",
228 c->state < 0 ? "failed" : c->state > 0 ? "succeeded" : "untested");
231 void condition_dump_list(Condition *first, FILE *f, const char *prefix) {
234 LIST_FOREACH(conditions, c, first)
235 condition_dump(c, f, prefix);
238 static const char* const condition_type_table[_CONDITION_TYPE_MAX] = {
239 [CONDITION_PATH_EXISTS] = "ConditionPathExists",
240 [CONDITION_PATH_EXISTS_GLOB] = "ConditionPathExistsGlob",
241 [CONDITION_PATH_IS_DIRECTORY] = "ConditionPathIsDirectory",
242 [CONDITION_PATH_IS_SYMBOLIC_LINK] = "ConditionPathIsSymbolicLink",
243 [CONDITION_PATH_IS_MOUNT_POINT] = "ConditionPathIsMountPoint",
244 [CONDITION_PATH_IS_READ_WRITE] = "ConditionPathIsReadWrite",
245 [CONDITION_DIRECTORY_NOT_EMPTY] = "ConditionDirectoryNotEmpty",
246 [CONDITION_FILE_NOT_EMPTY] = "ConditionFileNotEmpty",
247 [CONDITION_FILE_IS_EXECUTABLE] = "ConditionFileIsExecutable",
248 [CONDITION_KERNEL_COMMAND_LINE] = "ConditionKernelCommandLine",
249 [CONDITION_VIRTUALIZATION] = "ConditionVirtualization",
250 [CONDITION_SECURITY] = "ConditionSecurity",
251 [CONDITION_CAPABILITY] = "ConditionCapability",
252 [CONDITION_HOST] = "ConditionHost",
253 [CONDITION_AC_POWER] = "ConditionACPower",
254 [CONDITION_ARCHITECTURE] = "ConditionArchitecture",
255 [CONDITION_NEEDS_UPDATE] = "ConditionNeedsUpdate",
256 [CONDITION_FIRST_BOOT] = "ConditionFirstBoot",
257 [CONDITION_NULL] = "ConditionNull"
260 DEFINE_STRING_TABLE_LOOKUP(condition_type, ConditionType);