Bug Summary

File:build-scan/../src/libsystemd/sd-bus/bus-internal.c
Warning:line 332, column 12
Use of zero-allocated memory

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name bus-internal.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -relaxed-aliasing -menable-no-infs -menable-no-nans -menable-unsafe-fp-math -fno-signed-zeros -mreassociate -freciprocal-math -fdenormal-fp-math=preserve-sign,preserve-sign -ffp-contract=fast -fno-rounding-math -ffast-math -ffinite-math-only -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/12.0.0 -include config.h -I src/libsystemd/libsystemd_static.a.p -I src/libsystemd -I ../src/libsystemd -I src/basic -I ../src/basic -I src/shared -I ../src/shared -I src/systemd -I ../src/systemd -I src/journal -I ../src/journal -I src/journal-remote -I ../src/journal-remote -I src/nspawn -I ../src/nspawn -I src/resolve -I ../src/resolve -I src/timesync -I ../src/timesync -I ../src/time-wait-sync -I src/login -I ../src/login -I src/udev -I ../src/udev -I src/libudev -I ../src/libudev -I src/core -I ../src/core -I ../src/libsystemd/sd-bus -I ../src/libsystemd/sd-device -I ../src/libsystemd/sd-hwdb -I ../src/libsystemd/sd-id128 -I ../src/libsystemd/sd-netlink -I ../src/libsystemd/sd-network -I src/libsystemd-network -I ../src/libsystemd-network -I . -I .. -D _FILE_OFFSET_BITS=64 -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/12.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -Wwrite-strings -Wno-unused-parameter -Wno-missing-field-initializers -Wno-unused-result -Wno-format-signedness -Wno-error=nonnull -std=gnu99 -fconst-strings -fdebug-compilation-dir /home/mrc0mmand/repos/@redhat-plumbers/systemd-rhel8/build-scan -ferror-limit 19 -fvisibility default -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -analyzer-output=html -faddrsig -o /tmp/scan-build-2021-07-16-221226-1465241-1 -x c ../src/libsystemd/sd-bus/bus-internal.c

../src/libsystemd/sd-bus/bus-internal.c

→
1/* SPDX-License-Identifier: LGPL-2.1+ */
2/***
3***/
4
5#include "alloc-util.h"
6#include "bus-internal.h"
7#include "bus-message.h"
8#include "hexdecoct.h"
9#include "string-util.h"
10
11bool_Bool object_path_is_valid(const char *p) {
12 const char *q;
13 bool_Bool slash;
14
15 if (!p)
16 return false0;
17
18 if (p[0] != '/')
19 return false0;
20
21 if (p[1] == 0)
22 return true1;
23
24 for (slash = true1, q = p+1; *q; q++)
25 if (*q == '/') {
26 if (slash)
27 return false0;
28
29 slash = true1;
30 } else {
31 bool_Bool good;
32
33 good =
34 (*q >= 'a' && *q <= 'z') ||
35 (*q >= 'A' && *q <= 'Z') ||
36 (*q >= '0' && *q <= '9') ||
37 *q == '_';
38
39 if (!good)
40 return false0;
41
42 slash = false0;
43 }
44
45 if (slash)
46 return false0;
47
48 return (q - p) <= BUS_PATH_SIZE_MAX(64*1024);
49}
50
51char* object_path_startswith(const char *a, const char *b) {
52 const char *p;
53
54 if (!object_path_is_valid(a) ||
55 !object_path_is_valid(b))
56 return NULL((void*)0);
57
58 if (streq(b, "/")(strcmp((b),("/")) == 0))
59 return (char*) a + 1;
60
61 p = startswith(a, b);
62 if (!p)
63 return NULL((void*)0);
64
65 if (*p == 0)
66 return (char*) p;
67
68 if (*p == '/')
69 return (char*) p + 1;
70
71 return NULL((void*)0);
72}
73
74bool_Bool interface_name_is_valid(const char *p) {
75 const char *q;
76 bool_Bool dot, found_dot = false0;
77
78 if (isempty(p))
79 return false0;
80
81 for (dot = true1, q = p; *q; q++)
82 if (*q == '.') {
83 if (dot)
84 return false0;
85
86 found_dot = dot = true1;
87 } else {
88 bool_Bool good;
89
90 good =
91 (*q >= 'a' && *q <= 'z') ||
92 (*q >= 'A' && *q <= 'Z') ||
93 (!dot && *q >= '0' && *q <= '9') ||
94 *q == '_';
95
96 if (!good)
97 return false0;
98
99 dot = false0;
100 }
101
102 if (q - p > 255)
103 return false0;
104
105 if (dot)
106 return false0;
107
108 if (!found_dot)
109 return false0;
110
111 return true1;
112}
113
114bool_Bool service_name_is_valid(const char *p) {
115 const char *q;
116 bool_Bool dot, found_dot = false0, unique;
117
118 if (isempty(p))
119 return false0;
120
121 unique = p[0] == ':';
122
123 for (dot = true1, q = unique ? p+1 : p; *q; q++)
124 if (*q == '.') {
125 if (dot)
126 return false0;
127
128 found_dot = dot = true1;
129 } else {
130 bool_Bool good;
131
132 good =
133 (*q >= 'a' && *q <= 'z') ||
134 (*q >= 'A' && *q <= 'Z') ||
135 ((!dot || unique) && *q >= '0' && *q <= '9') ||
136 IN_SET(*q, '_', '-')({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended
[20 - sizeof((int[]){'_', '-'})/sizeof(int)]; switch(*q) { case
'_': case '-': _found = 1; break; default: break; } _found; }
);
137
138 if (!good)
139 return false0;
140
141 dot = false0;
142 }
143
144 if (q - p > 255)
145 return false0;
146
147 if (dot)
148 return false0;
149
150 if (!found_dot)
151 return false0;
152
153 return true1;
154}
155
156char* service_name_startswith(const char *a, const char *b) {
157 const char *p;
158
159 if (!service_name_is_valid(a) ||
160 !service_name_is_valid(b))
161 return NULL((void*)0);
162
163 p = startswith(a, b);
164 if (!p)
165 return NULL((void*)0);
166
167 if (*p == 0)
168 return (char*) p;
169
170 if (*p == '.')
171 return (char*) p + 1;
172
173 return NULL((void*)0);
174}
175
176bool_Bool member_name_is_valid(const char *p) {
177 const char *q;
178
179 if (isempty(p))
180 return false0;
181
182 for (q = p; *q; q++) {
183 bool_Bool good;
184
185 good =
186 (*q >= 'a' && *q <= 'z') ||
187 (*q >= 'A' && *q <= 'Z') ||
188 (*q >= '0' && *q <= '9') ||
189 *q == '_';
190
191 if (!good)
192 return false0;
193 }
194
195 if (q - p > 255)
196 return false0;
197
198 return true1;
199}
200
201/*
202 * Complex pattern match
203 * This checks whether @a is a 'complex-prefix' of @b, or @b is a
204 * 'complex-prefix' of @a, based on strings that consist of labels with @c as
205 * spearator. This function returns true if:
206 * - both strings are equal
207 * - either is a prefix of the other and ends with @c
208 * The second rule makes sure that either string needs to be fully included in
209 * the other, and the string which is considered the prefix needs to end with a
210 * separator.
211 */
212static bool_Bool complex_pattern_check(char c, const char *a, const char *b) {
213 bool_Bool separator = false0;
214
215 if (!a && !b)
216 return true1;
217
218 if (!a || !b)
219 return false0;
220
221 for (;;) {
222 if (*a != *b)
223 return (separator && (*a == 0 || *b == 0));
224
225 if (*a == 0)
226 return true1;
227
228 separator = *a == c;
229
230 a++, b++;
231 }
232}
233
234bool_Bool namespace_complex_pattern(const char *pattern, const char *value) {
235 return complex_pattern_check('.', pattern, value);
236}
237
238bool_Bool path_complex_pattern(const char *pattern, const char *value) {
239 return complex_pattern_check('/', pattern, value);
240}
241
242/*
243 * Simple pattern match
244 * This checks whether @a is a 'simple-prefix' of @b, based on strings that
245 * consist of labels with @c as separator. This function returns true, if:
246 * - if @a and @b are equal
247 * - if @a is a prefix of @b, and the first following character in @b (or the
248 * last character in @a) is @c
249 * The second rule basically makes sure that if @a is a prefix of @b, then @b
250 * must follow with a new label separated by @c. It cannot extend the label.
251 */
252static bool_Bool simple_pattern_check(char c, const char *a, const char *b) {
253 bool_Bool separator = false0;
254
255 if (!a && !b)
256 return true1;
257
258 if (!a || !b)
259 return false0;
260
261 for (;;) {
262 if (*a != *b)
263 return *a == 0 && (*b == c || separator);
264
265 if (*a == 0)
266 return true1;
267
268 separator = *a == c;
269
270 a++, b++;
271 }
272}
273
274bool_Bool namespace_simple_pattern(const char *pattern, const char *value) {
275 return simple_pattern_check('.', pattern, value);
276}
277
278bool_Bool path_simple_pattern(const char *pattern, const char *value) {
279 return simple_pattern_check('/', pattern, value);
280}
281
282int bus_message_type_from_string(const char *s, uint8_t *u) {
283 if (streq(s, "signal")(strcmp((s),("signal")) == 0))
284 *u = SD_BUS_MESSAGE_SIGNAL;
285 else if (streq(s, "method_call")(strcmp((s),("method_call")) == 0))
286 *u = SD_BUS_MESSAGE_METHOD_CALL;
287 else if (streq(s, "error")(strcmp((s),("error")) == 0))
288 *u = SD_BUS_MESSAGE_METHOD_ERROR;
289 else if (streq(s, "method_return")(strcmp((s),("method_return")) == 0))
290 *u = SD_BUS_MESSAGE_METHOD_RETURN;
291 else
292 return -EINVAL22;
293
294 return 0;
295}
296
297const char *bus_message_type_to_string(uint8_t u) {
298 if (u == SD_BUS_MESSAGE_SIGNAL)
299 return "signal";
300 else if (u == SD_BUS_MESSAGE_METHOD_CALL)
301 return "method_call";
302 else if (u == SD_BUS_MESSAGE_METHOD_ERROR)
303 return "error";
304 else if (u == SD_BUS_MESSAGE_METHOD_RETURN)
305 return "method_return";
306 else
307 return NULL((void*)0);
308}
309
310char *bus_address_escape(const char *v) {
311 const char *a;
312 char *r, *b;
313
314 r = new(char, strlen(v)*3+1)((char*) malloc_multiply(sizeof(char), (strlen(v)*3+1)));
1
Calling 'malloc_multiply'
→
4
←
Returned allocated memory
→
315 if (!r)
5
←
Assuming 'r' is non-null
→
6
←
Taking false branch
→
316 return NULL((void*)0);
317
318 for (a = v, b = r; *a; a++) {
7
←
Loop condition is false. Execution continues on line 332
→
319
320 if ((*a >= '0' && *a <= '9') ||
321 (*a >= 'a' && *a <= 'z') ||
322 (*a >= 'A' && *a <= 'Z') ||
323 strchr("_-/.", *a))
324 *(b++) = *a;
325 else {
326 *(b++) = '%';
327 *(b++) = hexchar(*a >> 4);
328 *(b++) = hexchar(*a & 0xF);
329 }
330 }
331
332 *b = 0;
8
←
Use of zero-allocated memory
333 return r;
334}
335
336int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error) {
337 assert(m)do { if ((__builtin_expect(!!(!(m)),0))) log_assert_failed_realm
(LOG_REALM_SYSTEMD, ("m"), "../src/libsystemd/sd-bus/bus-internal.c"
, 337, __PRETTY_FUNCTION__); } while (0);
338
339 if (r < 0) {
340 if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
341 sd_bus_reply_method_errno(m, r, error);
342
343 } else if (sd_bus_error_is_set(error)) {
344 if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
345 sd_bus_reply_method_error(m, error);
346 } else
347 return r;
348
349 log_debug("Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " signature=%s error-name=%s error-message=%s: %s",({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
350 bus_message_type_to_string(m->header->type),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
351 strna(sd_bus_message_get_sender(m)),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
352 strna(sd_bus_message_get_destination(m)),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
353 strna(sd_bus_message_get_path(m)),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
354 strna(sd_bus_message_get_interface(m)),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
355 strna(sd_bus_message_get_member(m)),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
356 BUS_MESSAGE_COOKIE(m),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
357 m->reply_cookie,({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
358 strna(m->root_container.signature),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
359 strna(m->error.name),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
360 strna(m->error.message),({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); })
361 bus_error_message(error, r))({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD
); (log_get_max_level_realm(_realm) >= ((_level) & 0x07
)) ? log_internal_realm(((_realm) << 10 | (_level)), _e
, "../src/libsystemd/sd-bus/bus-internal.c", 361, __func__, "Failed to process message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%"
"l" "u" " reply_cookie=%" "l" "u" " signature=%s error-name=%s error-message=%s: %s"
, bus_message_type_to_string(m->header->type), strna(sd_bus_message_get_sender
(m)), strna(sd_bus_message_get_destination(m)), strna(sd_bus_message_get_path
(m)), strna(sd_bus_message_get_interface(m)), strna(sd_bus_message_get_member
(m)), BUS_MESSAGE_COOKIE(m), m->reply_cookie, strna(m->
root_container.signature), strna(m->error.name), strna(m->
error.message), bus_error_message(error, r)) : -abs(_e); });
362
363 return 1;
364}
←

../src/basic/alloc-util.h

1/* SPDX-License-Identifier: LGPL-2.1+ */
2#pragma once
3
4#include <alloca.h>
5#include <stddef.h>
6#include <stdlib.h>
7#include <string.h>
8
9#include "macro.h"
10
11#define new(t, n)((t*) malloc_multiply(sizeof(t), (n))) ((t*) malloc_multiply(sizeof(t), (n)))
12
13#define new0(t, n)((t*) calloc((n), sizeof(t))) ((t*) calloc((n), sizeof(t)))
14
15#define newa(t, n)({ do { if ((__builtin_expect(!!(!(!size_multiply_overflow(sizeof
(t), n))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!size_multiply_overflow(sizeof(t), n)"
), "../src/basic/alloc-util.h", 15, __PRETTY_FUNCTION__); } while
(0); (t*) __builtin_alloca (sizeof(t)*(n)); }) \
16 ({ \
17 assert(!size_multiply_overflow(sizeof(t), n))do { if ((__builtin_expect(!!(!(!size_multiply_overflow(sizeof
(t), n))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!size_multiply_overflow(sizeof(t), n)"
), "../src/basic/alloc-util.h", 17, __PRETTY_FUNCTION__); } while
(0); \
18 (t*) alloca(sizeof(t)*(n))__builtin_alloca (sizeof(t)*(n)); \
19 })
20
21#define newa0(t, n)({ do { if ((__builtin_expect(!!(!(!size_multiply_overflow(sizeof
(t), n))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!size_multiply_overflow(sizeof(t), n)"
), "../src/basic/alloc-util.h", 21, __PRETTY_FUNCTION__); } while
(0); (t*) ({ char *_new_; size_t _len_ = sizeof(t)*(n); _new_
= __builtin_alloca (_len_); (void *) memset(_new_, 0, _len_)
; }); }) \
22 ({ \
23 assert(!size_multiply_overflow(sizeof(t), n))do { if ((__builtin_expect(!!(!(!size_multiply_overflow(sizeof
(t), n))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("!size_multiply_overflow(sizeof(t), n)"
), "../src/basic/alloc-util.h", 23, __PRETTY_FUNCTION__); } while
(0); \
24 (t*) alloca0(sizeof(t)*(n))({ char *_new_; size_t _len_ = sizeof(t)*(n); _new_ = __builtin_alloca
(_len_); (void *) memset(_new_, 0, _len_); }); \
25 })
26
27#define newdup(t, p, n)((t*) memdup_multiply(p, sizeof(t), (n))) ((t*) memdup_multiply(p, sizeof(t), (n)))
28
29#define newdup_suffix0(t, p, n)((t*) memdup_suffix0_multiply(p, sizeof(t), (n))) ((t*) memdup_suffix0_multiply(p, sizeof(t), (n)))
30
31#define malloc0(n)(calloc(1, (n))) (calloc(1, (n)))
32
33static inline void *mfree(void *memory) {
34 free(memory);
35 return NULL((void*)0);
36}
37
38#define free_and_replace(a, b)({ free(a); (a) = (b); (b) = ((void*)0); 0; }) \
39 ({ \
40 free(a); \
41 (a) = (b); \
42 (b) = NULL((void*)0); \
43 0; \
44 })
45
46void* memdup(const void *p, size_t l) _alloc_(2);
47void* memdup_suffix0(const void *p, size_t l) _alloc_(2);
48
49static inline void freep(void *p) {
50 free(*(void**) p);
51}
52
53#define _cleanup_free___attribute__((cleanup(freep))) _cleanup_(freep)__attribute__((cleanup(freep)))
54
55static inline bool_Bool size_multiply_overflow(size_t size, size_t need) {
56 return _unlikely_(need != 0 && size > (SIZE_MAX / need))(__builtin_expect(!!(need != 0 && size > ((18446744073709551615UL
) / need)),0));
57}
58
59_malloc___attribute__ ((malloc)) _alloc_(1, 2) static inline void *malloc_multiply(size_t size, size_t need) {
60 if (size_multiply_overflow(size, need))
2
←
Taking false branch
→
61 return NULL((void*)0);
62
63 return malloc(size * need);
3
←
Memory is allocated
→
64}
65
66#if !HAVE_REALLOCARRAY1
67_alloc_(2, 3) static inline void *reallocarray(void *p, size_t need, size_t size) {
68 if (size_multiply_overflow(size, need))
69 return NULL((void*)0);
70
71 return realloc(p, size * need);
72}
73#endif
74
75_alloc_(2, 3) static inline void *memdup_multiply(const void *p, size_t size, size_t need) {
76 if (size_multiply_overflow(size, need))
77 return NULL((void*)0);
78
79 return memdup(p, size * need);
80}
81
82_alloc_(2, 3) static inline void *memdup_suffix0_multiply(const void *p, size_t size, size_t need) {
83 if (size_multiply_overflow(size, need))
84 return NULL((void*)0);
85
86 return memdup_suffix0(p, size * need);
87}
88
89void* greedy_realloc(void **p, size_t *allocated, size_t need, size_t size);
90void* greedy_realloc0(void **p, size_t *allocated, size_t need, size_t size);
91
92#define GREEDY_REALLOC(array, allocated, need)greedy_realloc((void**) &(array), &(allocated), (need
), sizeof((array)[0])) \
93 greedy_realloc((void**) &(array), &(allocated), (need), sizeof((array)[0]))
94
95#define GREEDY_REALLOC0(array, allocated, need)greedy_realloc0((void**) &(array), &(allocated), (need
), sizeof((array)[0])) \
96 greedy_realloc0((void**) &(array), &(allocated), (need), sizeof((array)[0]))
97
98#define alloca0(n)({ char *_new_; size_t _len_ = n; _new_ = __builtin_alloca (_len_
); (void *) memset(_new_, 0, _len_); }) \
99 ({ \
100 char *_new_; \
101 size_t _len_ = n; \
102 _new_ = alloca(_len_)__builtin_alloca (_len_); \
103 (void *) memset(_new_, 0, _len_); \
104 })
105
106/* It's not clear what alignment glibc/gcc alloca() guarantee, hence provide a guaranteed safe version */
107#define alloca_align(size, align)({ void *_ptr_; size_t _mask_ = (align) - 1; _ptr_ = __builtin_alloca
((size) + _mask_); (void*)(((uintptr_t)_ptr_ + _mask_) &
~_mask_); }) \
108 ({ \
109 void *_ptr_; \
110 size_t _mask_ = (align) - 1; \
111 _ptr_ = alloca((size) + _mask_)__builtin_alloca ((size) + _mask_); \
112 (void*)(((uintptr_t)_ptr_ + _mask_) & ~_mask_); \
113 })
114
115#define alloca0_align(size, align)({ void *_new_; size_t _size_ = (size); _new_ = ({ void *_ptr_
; size_t _mask_ = ((align)) - 1; _ptr_ = __builtin_alloca ((_size_
) + _mask_); (void*)(((uintptr_t)_ptr_ + _mask_) & ~_mask_
); }); (void*)memset(_new_, 0, _size_); }) \
116 ({ \
117 void *_new_; \
118 size_t _size_ = (size); \
119 _new_ = alloca_align(_size_, (align))({ void *_ptr_; size_t _mask_ = ((align)) - 1; _ptr_ = __builtin_alloca
((_size_) + _mask_); (void*)(((uintptr_t)_ptr_ + _mask_) &
~_mask_); }); \
120 (void*)memset(_new_, 0, _size_); \
121 })
122
123/* Takes inspiration from Rusts's Option::take() method: reads and returns a pointer, but at the same time resets it to
124 * NULL. See: https://doc.rust-lang.org/std/option/enum.Option.html#method.take */
125#define TAKE_PTR(ptr)({ typeof(ptr) _ptr_ = (ptr); (ptr) = ((void*)0); _ptr_; }) \
126 ({ \
127 typeof(ptr) _ptr_ = (ptr); \
128 (ptr) = NULL((void*)0); \
129 _ptr_; \
130 })