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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
0b452006 | 2 | |
f5947a5e | 3 | #include <fcntl.h> |
bb2d1d8e | 4 | #include <linux/oom.h> |
69281c49 | 5 | #include <sys/mount.h> |
26fbedd7 | 6 | #include <sys/personality.h> |
69281c49 | 7 | #include <sys/prctl.h> |
0b452006 | 8 | #include <sys/stat.h> |
07630cea | 9 | #include <sys/types.h> |
0b452006 RC |
10 | #include <sys/wait.h> |
11 | #include <unistd.h> | |
349cc4a5 | 12 | #if HAVE_VALGRIND_VALGRIND_H |
b3d69149 EV |
13 | #include <valgrind/valgrind.h> |
14 | #endif | |
0b452006 | 15 | |
b5efdb8a | 16 | #include "alloc-util.h" |
26fbedd7 | 17 | #include "architecture.h" |
510c7a95 | 18 | #include "dirent-util.h" |
0c4d1e6d LP |
19 | #include "errno-list.h" |
20 | #include "errno-util.h" | |
69281c49 | 21 | #include "fd-util.h" |
032b3afb | 22 | #include "ioprio-util.h" |
0b452006 | 23 | #include "log.h" |
0b452006 | 24 | #include "macro.h" |
f5947a5e YW |
25 | #include "missing_sched.h" |
26 | #include "missing_syscall.h" | |
18dade5a | 27 | #include "parse-util.h" |
07630cea | 28 | #include "process-util.h" |
0c4d1e6d | 29 | #include "procfs-util.h" |
75997c3f | 30 | #include "rlimit-util.h" |
4c253ed1 | 31 | #include "signal-util.h" |
9a140c35 | 32 | #include "stdio-util.h" |
07630cea | 33 | #include "string-util.h" |
288a74cc | 34 | #include "terminal-util.h" |
6d7c4033 | 35 | #include "tests.h" |
75997c3f | 36 | #include "user-util.h" |
07630cea | 37 | #include "virt.h" |
0b452006 | 38 | |
c462e63e | 39 | static void test_get_process_comm_one(pid_t pid) { |
0b452006 | 40 | struct stat st; |
ba19c6e1 | 41 | _cleanup_free_ char *a = NULL, *c = NULL, *d = NULL, *f = NULL, *i = NULL; |
0b452006 | 42 | _cleanup_free_ char *env = NULL; |
fbd0b64f | 43 | char path[STRLEN("/proc//comm") + DECIMAL_STR_MAX(pid_t)]; |
0b452006 RC |
44 | pid_t e; |
45 | uid_t u; | |
46 | gid_t g; | |
47 | dev_t h; | |
48 | int r; | |
0b452006 | 49 | |
daceaabe ZJS |
50 | log_info("/* %s */", __func__); |
51 | ||
9a140c35 ZJS |
52 | xsprintf(path, "/proc/"PID_FMT"/comm", pid); |
53 | ||
54 | if (stat(path, &st) == 0) { | |
55 | assert_se(get_process_comm(pid, &a) >= 0); | |
56 | log_info("PID"PID_FMT" comm: '%s'", pid, a); | |
cfeaa44a | 57 | } else |
9a140c35 | 58 | log_warning("%s not exist.", path); |
0b452006 | 59 | |
09c1dcee | 60 | assert_se(get_process_cmdline(pid, 0, PROCESS_CMDLINE_COMM_FALLBACK, &c) >= 0); |
9a140c35 | 61 | log_info("PID"PID_FMT" cmdline: '%s'", pid, c); |
0b452006 | 62 | |
09c1dcee | 63 | assert_se(get_process_cmdline(pid, 8, 0, &d) >= 0); |
69281c49 LP |
64 | log_info("PID"PID_FMT" cmdline truncated to 8: '%s'", pid, d); |
65 | ||
66 | free(d); | |
09c1dcee | 67 | assert_se(get_process_cmdline(pid, 1, 0, &d) >= 0); |
69281c49 | 68 | log_info("PID"PID_FMT" cmdline truncated to 1: '%s'", pid, d); |
0b452006 | 69 | |
0c4d1e6d LP |
70 | r = get_process_ppid(pid, &e); |
71 | assert_se(pid == 1 ? r == -EADDRNOTAVAIL : r >= 0); | |
72 | if (r >= 0) { | |
73 | log_info("PID"PID_FMT" PPID: "PID_FMT, pid, e); | |
74 | assert_se(e > 0); | |
75 | } | |
0b452006 | 76 | |
9a140c35 | 77 | assert_se(is_kernel_thread(pid) == 0 || pid != 1); |
0b452006 | 78 | |
9a140c35 | 79 | r = get_process_exe(pid, &f); |
0b452006 | 80 | assert_se(r >= 0 || r == -EACCES); |
9a140c35 | 81 | log_info("PID"PID_FMT" exe: '%s'", pid, strna(f)); |
0b452006 | 82 | |
9a140c35 ZJS |
83 | assert_se(get_process_uid(pid, &u) == 0); |
84 | log_info("PID"PID_FMT" UID: "UID_FMT, pid, u); | |
0b452006 | 85 | |
9a140c35 ZJS |
86 | assert_se(get_process_gid(pid, &g) == 0); |
87 | log_info("PID"PID_FMT" GID: "GID_FMT, pid, g); | |
0b452006 | 88 | |
9a140c35 | 89 | r = get_process_environ(pid, &env); |
0b452006 | 90 | assert_se(r >= 0 || r == -EACCES); |
9a140c35 | 91 | log_info("PID"PID_FMT" strlen(environ): %zi", pid, env ? (ssize_t)strlen(env) : (ssize_t)-errno); |
0b452006 | 92 | |
75f86906 | 93 | if (!detect_container()) |
9a140c35 | 94 | assert_se(get_ctty_devnr(pid, &h) == -ENXIO || pid != 1); |
0b452006 | 95 | |
6fb05b07 | 96 | (void) getenv_for_pid(pid, "PATH", &i); |
9a140c35 | 97 | log_info("PID"PID_FMT" $PATH: '%s'", pid, strna(i)); |
0b452006 RC |
98 | } |
99 | ||
c462e63e JJ |
100 | TEST(get_process_comm) { |
101 | if (saved_argc > 1) { | |
102 | pid_t pid = 0; | |
103 | ||
104 | (void) parse_pid(saved_argv[1], &pid); | |
105 | test_get_process_comm_one(pid); | |
106 | } else { | |
107 | TEST_REQ_RUNNING_SYSTEMD(test_get_process_comm_one(1)); | |
108 | test_get_process_comm_one(getpid()); | |
109 | } | |
110 | } | |
111 | ||
510c7a95 ZJS |
112 | static void test_get_process_cmdline_one(pid_t pid) { |
113 | _cleanup_free_ char *c = NULL, *d = NULL, *e = NULL, *f = NULL, *g = NULL, *h = NULL; | |
114 | int r; | |
115 | ||
116 | r = get_process_cmdline(pid, SIZE_MAX, 0, &c); | |
117 | log_info("PID "PID_FMT": %s", pid, r >= 0 ? c : errno_to_name(r)); | |
118 | ||
119 | r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &d); | |
120 | log_info(" %s", r >= 0 ? d : errno_to_name(r)); | |
121 | ||
122 | r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_QUOTE, &e); | |
123 | log_info(" %s", r >= 0 ? e : errno_to_name(r)); | |
124 | ||
125 | r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_QUOTE | PROCESS_CMDLINE_COMM_FALLBACK, &f); | |
126 | log_info(" %s", r >= 0 ? f : errno_to_name(r)); | |
127 | ||
128 | r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_QUOTE_POSIX, &g); | |
129 | log_info(" %s", r >= 0 ? g : errno_to_name(r)); | |
130 | ||
131 | r = get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_QUOTE_POSIX | PROCESS_CMDLINE_COMM_FALLBACK, &h); | |
132 | log_info(" %s", r >= 0 ? h : errno_to_name(r)); | |
133 | } | |
134 | ||
c462e63e | 135 | TEST(get_process_cmdline) { |
510c7a95 | 136 | _cleanup_closedir_ DIR *d = NULL; |
510c7a95 | 137 | |
510c7a95 ZJS |
138 | assert_se(d = opendir("/proc")); |
139 | ||
140 | FOREACH_DIRENT(de, d, return) { | |
141 | pid_t pid; | |
142 | ||
510c7a95 ZJS |
143 | if (de->d_type != DT_DIR) |
144 | continue; | |
145 | ||
146 | if (parse_pid(de->d_name, &pid) < 0) | |
147 | continue; | |
148 | ||
149 | test_get_process_cmdline_one(pid); | |
150 | } | |
151 | } | |
152 | ||
ce268825 LP |
153 | static void test_get_process_comm_escape_one(const char *input, const char *output) { |
154 | _cleanup_free_ char *n = NULL; | |
155 | ||
daceaabe | 156 | log_debug("input: <%s> — output: <%s>", input, output); |
ce268825 LP |
157 | |
158 | assert_se(prctl(PR_SET_NAME, input) >= 0); | |
159 | assert_se(get_process_comm(0, &n) >= 0); | |
160 | ||
daceaabe | 161 | log_debug("got: <%s>", n); |
ce268825 LP |
162 | |
163 | assert_se(streq_ptr(n, output)); | |
164 | } | |
165 | ||
c462e63e | 166 | TEST(get_process_comm_escape) { |
ce268825 LP |
167 | _cleanup_free_ char *saved = NULL; |
168 | ||
169 | assert_se(get_process_comm(0, &saved) >= 0); | |
170 | ||
171 | test_get_process_comm_escape_one("", ""); | |
172 | test_get_process_comm_escape_one("foo", "foo"); | |
173 | test_get_process_comm_escape_one("012345678901234", "012345678901234"); | |
174 | test_get_process_comm_escape_one("0123456789012345", "012345678901234"); | |
0e85cbcf ZJS |
175 | test_get_process_comm_escape_one("äöüß", "\\303\\244\\303\\266\\303\\274\\303\\237"); |
176 | test_get_process_comm_escape_one("xäöüß", "x\\303\\244\\303\\266\\303\\274\\303\\237"); | |
177 | test_get_process_comm_escape_one("xxäöüß", "xx\\303\\244\\303\\266\\303\\274\\303\\237"); | |
178 | test_get_process_comm_escape_one("xxxäöüß", "xxx\\303\\244\\303\\266\\303\\274\\303\\237"); | |
179 | test_get_process_comm_escape_one("xxxxäöüß", "xxxx\\303\\244\\303\\266\\303\\274\\303\\237"); | |
180 | test_get_process_comm_escape_one("xxxxxäöüß", "xxxxx\\303\\244\\303\\266\\303\\274\\303\\237"); | |
ce268825 LP |
181 | |
182 | assert_se(prctl(PR_SET_NAME, saved) >= 0); | |
183 | } | |
184 | ||
c462e63e | 185 | TEST(pid_is_unwaited) { |
0b452006 RC |
186 | pid_t pid; |
187 | ||
188 | pid = fork(); | |
189 | assert_se(pid >= 0); | |
190 | if (pid == 0) { | |
191 | _exit(EXIT_SUCCESS); | |
192 | } else { | |
193 | int status; | |
194 | ||
195 | waitpid(pid, &status, 0); | |
196 | assert_se(!pid_is_unwaited(pid)); | |
197 | } | |
df0ff127 | 198 | assert_se(pid_is_unwaited(getpid_cached())); |
0b452006 RC |
199 | assert_se(!pid_is_unwaited(-1)); |
200 | } | |
201 | ||
c462e63e | 202 | TEST(pid_is_alive) { |
0b452006 RC |
203 | pid_t pid; |
204 | ||
205 | pid = fork(); | |
206 | assert_se(pid >= 0); | |
207 | if (pid == 0) { | |
208 | _exit(EXIT_SUCCESS); | |
209 | } else { | |
210 | int status; | |
211 | ||
212 | waitpid(pid, &status, 0); | |
213 | assert_se(!pid_is_alive(pid)); | |
214 | } | |
df0ff127 | 215 | assert_se(pid_is_alive(getpid_cached())); |
0b452006 RC |
216 | assert_se(!pid_is_alive(-1)); |
217 | } | |
218 | ||
c462e63e | 219 | TEST(personality) { |
26fbedd7 LP |
220 | assert_se(personality_to_string(PER_LINUX)); |
221 | assert_se(!personality_to_string(PERSONALITY_INVALID)); | |
222 | ||
223 | assert_se(streq(personality_to_string(PER_LINUX), architecture_to_string(native_architecture()))); | |
224 | ||
225 | assert_se(personality_from_string(personality_to_string(PER_LINUX)) == PER_LINUX); | |
226 | assert_se(personality_from_string(architecture_to_string(native_architecture())) == PER_LINUX); | |
227 | ||
228 | #ifdef __x86_64__ | |
229 | assert_se(streq_ptr(personality_to_string(PER_LINUX), "x86-64")); | |
230 | assert_se(streq_ptr(personality_to_string(PER_LINUX32), "x86")); | |
231 | ||
232 | assert_se(personality_from_string("x86-64") == PER_LINUX); | |
233 | assert_se(personality_from_string("x86") == PER_LINUX32); | |
234 | assert_se(personality_from_string("ia64") == PERSONALITY_INVALID); | |
235 | assert_se(personality_from_string(NULL) == PERSONALITY_INVALID); | |
236 | ||
237 | assert_se(personality_from_string(personality_to_string(PER_LINUX32)) == PER_LINUX32); | |
238 | #endif | |
239 | } | |
240 | ||
c462e63e | 241 | TEST(get_process_cmdline_harder) { |
69281c49 LP |
242 | char path[] = "/tmp/test-cmdlineXXXXXX"; |
243 | _cleanup_close_ int fd = -1; | |
244 | _cleanup_free_ char *line = NULL; | |
245 | pid_t pid; | |
246 | ||
92f6a1b6 YW |
247 | if (geteuid() != 0) { |
248 | log_info("Skipping %s: not root", __func__); | |
69281c49 | 249 | return; |
92f6a1b6 | 250 | } |
69281c49 | 251 | |
5f00dc4d LP |
252 | if (!have_namespaces()) { |
253 | log_notice("Testing without namespaces, skipping %s", __func__); | |
254 | return; | |
255 | } | |
256 | ||
349cc4a5 | 257 | #if HAVE_VALGRIND_VALGRIND_H |
b3d69149 EV |
258 | /* valgrind patches open(/proc//cmdline) |
259 | * so, test_get_process_cmdline_harder fails always | |
260 | * See https://github.com/systemd/systemd/pull/3555#issuecomment-226564908 */ | |
92f6a1b6 YW |
261 | if (RUNNING_ON_VALGRIND) { |
262 | log_info("Skipping %s: running on valgrind", __func__); | |
b3d69149 | 263 | return; |
92f6a1b6 | 264 | } |
b3d69149 EV |
265 | #endif |
266 | ||
69281c49 LP |
267 | pid = fork(); |
268 | if (pid > 0) { | |
269 | siginfo_t si; | |
270 | ||
271 | (void) wait_for_terminate(pid, &si); | |
272 | ||
273 | assert_se(si.si_code == CLD_EXITED); | |
274 | assert_se(si.si_status == 0); | |
275 | ||
276 | return; | |
277 | } | |
278 | ||
279 | assert_se(pid == 0); | |
280 | assert_se(unshare(CLONE_NEWNS) >= 0); | |
281 | ||
0ffa4c7c EV |
282 | if (mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL) < 0) { |
283 | log_warning_errno(errno, "mount(..., \"/\", MS_SLAVE|MS_REC, ...) failed: %m"); | |
284 | assert_se(IN_SET(errno, EPERM, EACCES)); | |
285 | return; | |
286 | } | |
c58fd466 | 287 | |
69281c49 LP |
288 | fd = mkostemp(path, O_CLOEXEC); |
289 | assert_se(fd >= 0); | |
347ebd02 | 290 | |
0ffa4c7c EV |
291 | /* Note that we don't unmount the following bind-mount at the end of the test because the kernel |
292 | * will clear up its /proc/PID/ hierarchy automatically as soon as the test stops. */ | |
347ebd02 ZJS |
293 | if (mount(path, "/proc/self/cmdline", "bind", MS_BIND, NULL) < 0) { |
294 | /* This happens under selinux… Abort the test in this case. */ | |
295 | log_warning_errno(errno, "mount(..., \"/proc/self/cmdline\", \"bind\", ...) failed: %m"); | |
0ffa4c7c | 296 | assert_se(IN_SET(errno, EPERM, EACCES)); |
347ebd02 ZJS |
297 | return; |
298 | } | |
299 | ||
7b7a060e AZ |
300 | /* Set RLIMIT_STACK to infinity to test we don't try to allocate unncessarily large values to read |
301 | * the cmdline. */ | |
302 | if (setrlimit(RLIMIT_STACK, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0) | |
303 | log_warning("Testing without RLIMIT_STACK=infinity"); | |
304 | ||
69281c49 LP |
305 | assert_se(unlink(path) >= 0); |
306 | ||
307 | assert_se(prctl(PR_SET_NAME, "testa") >= 0); | |
308 | ||
679b0b0a | 309 | assert_se(get_process_cmdline(0, SIZE_MAX, 0, &line) == -ENOENT); |
69281c49 | 310 | |
679b0b0a | 311 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 312 | log_debug("'%s'", line); |
69281c49 LP |
313 | assert_se(streq(line, "[testa]")); |
314 | line = mfree(line); | |
315 | ||
61977664 | 316 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK | PROCESS_CMDLINE_QUOTE, &line) >= 0); |
daceaabe | 317 | log_debug("'%s'", line); |
61977664 ZJS |
318 | assert_se(streq(line, "\"[testa]\"")); /* quoting is enabled here */ |
319 | line = mfree(line); | |
320 | ||
679b0b0a | 321 | assert_se(get_process_cmdline(0, 0, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 322 | log_debug("'%s'", line); |
69281c49 LP |
323 | assert_se(streq(line, "")); |
324 | line = mfree(line); | |
325 | ||
679b0b0a | 326 | assert_se(get_process_cmdline(0, 1, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
bc28751e ZJS |
327 | assert_se(streq(line, "…")); |
328 | line = mfree(line); | |
329 | ||
679b0b0a | 330 | assert_se(get_process_cmdline(0, 2, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
bc28751e | 331 | assert_se(streq(line, "[…")); |
69281c49 LP |
332 | line = mfree(line); |
333 | ||
679b0b0a | 334 | assert_se(get_process_cmdline(0, 3, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
bc28751e | 335 | assert_se(streq(line, "[t…")); |
69281c49 LP |
336 | line = mfree(line); |
337 | ||
679b0b0a | 338 | assert_se(get_process_cmdline(0, 4, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
bc28751e | 339 | assert_se(streq(line, "[te…")); |
69281c49 LP |
340 | line = mfree(line); |
341 | ||
679b0b0a | 342 | assert_se(get_process_cmdline(0, 5, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
bc28751e | 343 | assert_se(streq(line, "[tes…")); |
69281c49 LP |
344 | line = mfree(line); |
345 | ||
679b0b0a | 346 | assert_se(get_process_cmdline(0, 6, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
bc28751e | 347 | assert_se(streq(line, "[test…")); |
69281c49 LP |
348 | line = mfree(line); |
349 | ||
679b0b0a | 350 | assert_se(get_process_cmdline(0, 7, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
69281c49 LP |
351 | assert_se(streq(line, "[testa]")); |
352 | line = mfree(line); | |
353 | ||
679b0b0a | 354 | assert_se(get_process_cmdline(0, 8, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
69281c49 LP |
355 | assert_se(streq(line, "[testa]")); |
356 | line = mfree(line); | |
357 | ||
61977664 ZJS |
358 | /* Test with multiple arguments that don't require quoting */ |
359 | ||
bc28751e | 360 | assert_se(write(fd, "foo\0bar", 8) == 8); |
69281c49 | 361 | |
679b0b0a | 362 | assert_se(get_process_cmdline(0, SIZE_MAX, 0, &line) >= 0); |
daceaabe | 363 | log_debug("'%s'", line); |
69281c49 LP |
364 | assert_se(streq(line, "foo bar")); |
365 | line = mfree(line); | |
366 | ||
679b0b0a | 367 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
69281c49 LP |
368 | assert_se(streq(line, "foo bar")); |
369 | line = mfree(line); | |
370 | ||
371 | assert_se(write(fd, "quux", 4) == 4); | |
679b0b0a | 372 | assert_se(get_process_cmdline(0, SIZE_MAX, 0, &line) >= 0); |
daceaabe | 373 | log_debug("'%s'", line); |
69281c49 LP |
374 | assert_se(streq(line, "foo bar quux")); |
375 | line = mfree(line); | |
376 | ||
679b0b0a | 377 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 378 | log_debug("'%s'", line); |
69281c49 LP |
379 | assert_se(streq(line, "foo bar quux")); |
380 | line = mfree(line); | |
381 | ||
679b0b0a | 382 | assert_se(get_process_cmdline(0, 1, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 383 | log_debug("'%s'", line); |
bc28751e | 384 | assert_se(streq(line, "…")); |
69281c49 LP |
385 | line = mfree(line); |
386 | ||
679b0b0a | 387 | assert_se(get_process_cmdline(0, 2, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 388 | log_debug("'%s'", line); |
bc28751e | 389 | assert_se(streq(line, "f…")); |
69281c49 LP |
390 | line = mfree(line); |
391 | ||
679b0b0a | 392 | assert_se(get_process_cmdline(0, 3, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 393 | log_debug("'%s'", line); |
bc28751e | 394 | assert_se(streq(line, "fo…")); |
69281c49 LP |
395 | line = mfree(line); |
396 | ||
679b0b0a | 397 | assert_se(get_process_cmdline(0, 4, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 398 | log_debug("'%s'", line); |
bc28751e | 399 | assert_se(streq(line, "foo…")); |
69281c49 LP |
400 | line = mfree(line); |
401 | ||
679b0b0a | 402 | assert_se(get_process_cmdline(0, 5, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 403 | log_debug("'%s'", line); |
bc28751e | 404 | assert_se(streq(line, "foo …")); |
69281c49 LP |
405 | line = mfree(line); |
406 | ||
679b0b0a | 407 | assert_se(get_process_cmdline(0, 6, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 408 | log_debug("'%s'", line); |
bc28751e | 409 | assert_se(streq(line, "foo b…")); |
69281c49 LP |
410 | line = mfree(line); |
411 | ||
679b0b0a | 412 | assert_se(get_process_cmdline(0, 7, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 413 | log_debug("'%s'", line); |
bc28751e | 414 | assert_se(streq(line, "foo ba…")); |
69281c49 LP |
415 | line = mfree(line); |
416 | ||
679b0b0a | 417 | assert_se(get_process_cmdline(0, 8, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 418 | log_debug("'%s'", line); |
bc28751e | 419 | assert_se(streq(line, "foo bar…")); |
69281c49 LP |
420 | line = mfree(line); |
421 | ||
679b0b0a | 422 | assert_se(get_process_cmdline(0, 9, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 423 | log_debug("'%s'", line); |
bc28751e | 424 | assert_se(streq(line, "foo bar …")); |
69281c49 LP |
425 | line = mfree(line); |
426 | ||
679b0b0a | 427 | assert_se(get_process_cmdline(0, 10, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 428 | log_debug("'%s'", line); |
bc28751e | 429 | assert_se(streq(line, "foo bar q…")); |
69281c49 LP |
430 | line = mfree(line); |
431 | ||
679b0b0a | 432 | assert_se(get_process_cmdline(0, 11, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 433 | log_debug("'%s'", line); |
bc28751e | 434 | assert_se(streq(line, "foo bar qu…")); |
69281c49 LP |
435 | line = mfree(line); |
436 | ||
679b0b0a | 437 | assert_se(get_process_cmdline(0, 12, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 438 | log_debug("'%s'", line); |
bc28751e | 439 | assert_se(streq(line, "foo bar quux")); |
69281c49 LP |
440 | line = mfree(line); |
441 | ||
679b0b0a | 442 | assert_se(get_process_cmdline(0, 13, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 443 | log_debug("'%s'", line); |
69281c49 LP |
444 | assert_se(streq(line, "foo bar quux")); |
445 | line = mfree(line); | |
446 | ||
679b0b0a | 447 | assert_se(get_process_cmdline(0, 14, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 448 | log_debug("'%s'", line); |
69281c49 LP |
449 | assert_se(streq(line, "foo bar quux")); |
450 | line = mfree(line); | |
451 | ||
679b0b0a | 452 | assert_se(get_process_cmdline(0, 1000, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 453 | log_debug("'%s'", line); |
69281c49 LP |
454 | assert_se(streq(line, "foo bar quux")); |
455 | line = mfree(line); | |
456 | ||
457 | assert_se(ftruncate(fd, 0) >= 0); | |
458 | assert_se(prctl(PR_SET_NAME, "aaaa bbbb cccc") >= 0); | |
459 | ||
679b0b0a | 460 | assert_se(get_process_cmdline(0, SIZE_MAX, 0, &line) == -ENOENT); |
69281c49 | 461 | |
679b0b0a | 462 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 463 | log_debug("'%s'", line); |
69281c49 LP |
464 | assert_se(streq(line, "[aaaa bbbb cccc]")); |
465 | line = mfree(line); | |
466 | ||
679b0b0a | 467 | assert_se(get_process_cmdline(0, 10, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 468 | log_debug("'%s'", line); |
bc28751e | 469 | assert_se(streq(line, "[aaaa bbb…")); |
69281c49 LP |
470 | line = mfree(line); |
471 | ||
679b0b0a | 472 | assert_se(get_process_cmdline(0, 11, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 473 | log_debug("'%s'", line); |
bc28751e | 474 | assert_se(streq(line, "[aaaa bbbb…")); |
69281c49 LP |
475 | line = mfree(line); |
476 | ||
679b0b0a | 477 | assert_se(get_process_cmdline(0, 12, PROCESS_CMDLINE_COMM_FALLBACK, &line) >= 0); |
daceaabe | 478 | log_debug("'%s'", line); |
bc28751e | 479 | assert_se(streq(line, "[aaaa bbbb …")); |
69281c49 LP |
480 | line = mfree(line); |
481 | ||
61977664 ZJS |
482 | /* Test with multiple arguments that do require quoting */ |
483 | ||
484 | #define CMDLINE1 "foo\0'bar'\0\"bar$\"\0x y z\0!``\0" | |
aa9de5b1 YW |
485 | #define EXPECT1 "foo \"'bar'\" \"\\\"bar\\$\\\"\" \"x y z\" \"!\\`\\`\"" |
486 | #define EXPECT1p "foo $'\\'bar\\'' $'\"bar$\"' $'x y z' $'!``'" | |
61977664 ZJS |
487 | assert_se(lseek(fd, SEEK_SET, 0) == 0); |
488 | assert_se(write(fd, CMDLINE1, sizeof CMDLINE1) == sizeof CMDLINE1); | |
489 | assert_se(ftruncate(fd, sizeof CMDLINE1) == 0); | |
490 | ||
491 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_QUOTE, &line) >= 0); | |
daceaabe ZJS |
492 | log_debug("got: ==%s==", line); |
493 | log_debug("exp: ==%s==", EXPECT1); | |
61977664 ZJS |
494 | assert_se(streq(line, EXPECT1)); |
495 | line = mfree(line); | |
496 | ||
99009ed0 ZJS |
497 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_QUOTE_POSIX, &line) >= 0); |
498 | log_debug("got: ==%s==", line); | |
499 | log_debug("exp: ==%s==", EXPECT1p); | |
500 | assert_se(streq(line, EXPECT1p)); | |
501 | line = mfree(line); | |
502 | ||
61977664 | 503 | #define CMDLINE2 "foo\0\1\2\3\0\0" |
aa9de5b1 YW |
504 | #define EXPECT2 "foo \"\\001\\002\\003\"" |
505 | #define EXPECT2p "foo $'\\001\\002\\003'" | |
61977664 ZJS |
506 | assert_se(lseek(fd, SEEK_SET, 0) == 0); |
507 | assert_se(write(fd, CMDLINE2, sizeof CMDLINE2) == sizeof CMDLINE2); | |
508 | assert_se(ftruncate(fd, sizeof CMDLINE2) == 0); | |
509 | ||
510 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_QUOTE, &line) >= 0); | |
daceaabe ZJS |
511 | log_debug("got: ==%s==", line); |
512 | log_debug("exp: ==%s==", EXPECT2); | |
61977664 ZJS |
513 | assert_se(streq(line, EXPECT2)); |
514 | line = mfree(line); | |
515 | ||
99009ed0 ZJS |
516 | assert_se(get_process_cmdline(0, SIZE_MAX, PROCESS_CMDLINE_QUOTE_POSIX, &line) >= 0); |
517 | log_debug("got: ==%s==", line); | |
518 | log_debug("exp: ==%s==", EXPECT2p); | |
519 | assert_se(streq(line, EXPECT2p)); | |
520 | line = mfree(line); | |
521 | ||
69281c49 | 522 | safe_close(fd); |
a45d7127 | 523 | _exit(EXIT_SUCCESS); |
69281c49 LP |
524 | } |
525 | ||
c462e63e | 526 | TEST(getpid_cached) { |
5c30a6d2 LP |
527 | siginfo_t si; |
528 | pid_t a, b, c, d, e, f, child; | |
529 | ||
530 | a = raw_getpid(); | |
531 | b = getpid_cached(); | |
532 | c = getpid(); | |
533 | ||
534 | assert_se(a == b && a == c); | |
535 | ||
536 | child = fork(); | |
537 | assert_se(child >= 0); | |
538 | ||
539 | if (child == 0) { | |
540 | /* In child */ | |
541 | a = raw_getpid(); | |
542 | b = getpid_cached(); | |
543 | c = getpid(); | |
544 | ||
545 | assert_se(a == b && a == c); | |
a45d7127 | 546 | _exit(EXIT_SUCCESS); |
5c30a6d2 LP |
547 | } |
548 | ||
549 | d = raw_getpid(); | |
550 | e = getpid_cached(); | |
551 | f = getpid(); | |
552 | ||
553 | assert_se(a == d && a == e && a == f); | |
554 | ||
555 | assert_se(wait_for_terminate(child, &si) >= 0); | |
556 | assert_se(si.si_status == 0); | |
557 | assert_se(si.si_code == CLD_EXITED); | |
558 | } | |
559 | ||
c462e63e | 560 | TEST(getpid_measure) { |
5c30a6d2 LP |
561 | usec_t t, q; |
562 | ||
07468a16 ZJS |
563 | unsigned long long iterations = slow_tests_enabled() ? 1000000 : 1000; |
564 | ||
565 | log_info("/* %s (%llu iterations) */", __func__, iterations); | |
daceaabe | 566 | |
5c30a6d2 | 567 | t = now(CLOCK_MONOTONIC); |
07468a16 | 568 | for (unsigned long long i = 0; i < iterations; i++) |
5c30a6d2 LP |
569 | (void) getpid(); |
570 | q = now(CLOCK_MONOTONIC) - t; | |
571 | ||
07468a16 ZJS |
572 | log_info(" glibc getpid(): %lf µs each\n", (double) q / iterations); |
573 | ||
574 | iterations *= 50; /* _cached() is about 50 times faster, so we need more iterations */ | |
5c30a6d2 LP |
575 | |
576 | t = now(CLOCK_MONOTONIC); | |
07468a16 | 577 | for (unsigned long long i = 0; i < iterations; i++) |
5c30a6d2 LP |
578 | (void) getpid_cached(); |
579 | q = now(CLOCK_MONOTONIC) - t; | |
580 | ||
07468a16 | 581 | log_info("getpid_cached(): %lf µs each\n", (double) q / iterations); |
5c30a6d2 LP |
582 | } |
583 | ||
c462e63e | 584 | TEST(safe_fork) { |
4c253ed1 LP |
585 | siginfo_t status; |
586 | pid_t pid; | |
587 | int r; | |
588 | ||
589 | BLOCK_SIGNALS(SIGCHLD); | |
590 | ||
591 | r = safe_fork("(test-child)", FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_NULL_STDIO|FORK_REOPEN_LOG, &pid); | |
592 | assert_se(r >= 0); | |
593 | ||
594 | if (r == 0) { | |
595 | /* child */ | |
596 | usleep(100 * USEC_PER_MSEC); | |
597 | ||
598 | _exit(88); | |
599 | } | |
600 | ||
601 | assert_se(wait_for_terminate(pid, &status) >= 0); | |
602 | assert_se(status.si_code == CLD_EXITED); | |
603 | assert_se(status.si_status == 88); | |
604 | } | |
605 | ||
c462e63e | 606 | TEST(pid_to_ptr) { |
eb5eb254 LP |
607 | assert_se(PTR_TO_PID(NULL) == 0); |
608 | assert_se(PID_TO_PTR(0) == NULL); | |
609 | ||
610 | assert_se(PTR_TO_PID(PID_TO_PTR(1)) == 1); | |
611 | assert_se(PTR_TO_PID(PID_TO_PTR(2)) == 2); | |
612 | assert_se(PTR_TO_PID(PID_TO_PTR(-1)) == -1); | |
613 | assert_se(PTR_TO_PID(PID_TO_PTR(-2)) == -2); | |
614 | ||
615 | assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MAX)) == INT16_MAX); | |
616 | assert_se(PTR_TO_PID(PID_TO_PTR(INT16_MIN)) == INT16_MIN); | |
617 | ||
eb5eb254 LP |
618 | assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MAX)) == INT32_MAX); |
619 | assert_se(PTR_TO_PID(PID_TO_PTR(INT32_MIN)) == INT32_MIN); | |
eb5eb254 LP |
620 | } |
621 | ||
543497fa | 622 | static void test_ioprio_class_from_to_string_one(const char *val, int expected, int normalized) { |
10062bbc ZJS |
623 | assert_se(ioprio_class_from_string(val) == expected); |
624 | if (expected >= 0) { | |
625 | _cleanup_free_ char *s = NULL; | |
626 | unsigned ret; | |
543497fa | 627 | int combined; |
10062bbc ZJS |
628 | |
629 | assert_se(ioprio_class_to_string_alloc(expected, &s) == 0); | |
543497fa | 630 | /* We sometimes get a class number and sometimes a name back */ |
10062bbc ZJS |
631 | assert_se(streq(s, val) || |
632 | safe_atou(val, &ret) == 0); | |
543497fa LP |
633 | |
634 | /* Make sure normalization works, i.e. NONE → BE gets normalized */ | |
635 | combined = ioprio_normalize(ioprio_prio_value(expected, 0)); | |
636 | assert_se(ioprio_prio_class(combined) == normalized); | |
637 | assert_se(expected != IOPRIO_CLASS_NONE || ioprio_prio_data(combined) == 4); | |
10062bbc ZJS |
638 | } |
639 | } | |
9bfaffd5 | 640 | |
c462e63e | 641 | TEST(ioprio_class_from_to_string) { |
543497fa LP |
642 | test_ioprio_class_from_to_string_one("none", IOPRIO_CLASS_NONE, IOPRIO_CLASS_BE); |
643 | test_ioprio_class_from_to_string_one("realtime", IOPRIO_CLASS_RT, IOPRIO_CLASS_RT); | |
644 | test_ioprio_class_from_to_string_one("best-effort", IOPRIO_CLASS_BE, IOPRIO_CLASS_BE); | |
645 | test_ioprio_class_from_to_string_one("idle", IOPRIO_CLASS_IDLE, IOPRIO_CLASS_IDLE); | |
646 | test_ioprio_class_from_to_string_one("0", IOPRIO_CLASS_NONE, IOPRIO_CLASS_BE); | |
647 | test_ioprio_class_from_to_string_one("1", 1, 1); | |
648 | test_ioprio_class_from_to_string_one("7", 7, 7); | |
649 | test_ioprio_class_from_to_string_one("8", 8, 8); | |
650 | test_ioprio_class_from_to_string_one("9", -EINVAL, -EINVAL); | |
651 | test_ioprio_class_from_to_string_one("-1", -EINVAL, -EINVAL); | |
10062bbc ZJS |
652 | } |
653 | ||
c462e63e | 654 | TEST(setpriority_closest) { |
75997c3f LP |
655 | int r; |
656 | ||
daceaabe ZJS |
657 | r = safe_fork("(test-setprio)", |
658 | FORK_RESET_SIGNALS|FORK_CLOSE_ALL_FDS|FORK_DEATHSIG|FORK_WAIT|FORK_LOG, NULL); | |
75997c3f LP |
659 | assert_se(r >= 0); |
660 | ||
661 | if (r == 0) { | |
662 | bool full_test; | |
663 | int p, q; | |
664 | /* child */ | |
665 | ||
666 | /* rlimit of 30 equals nice level of -10 */ | |
667 | if (setrlimit(RLIMIT_NICE, &RLIMIT_MAKE_CONST(30)) < 0) { | |
6a6078a5 | 668 | /* If this fails we are probably unprivileged or in a userns of some kind, let's skip |
75997c3f LP |
669 | * the full test */ |
670 | assert_se(ERRNO_IS_PRIVILEGE(errno)); | |
671 | full_test = false; | |
672 | } else { | |
673 | assert_se(setresgid(GID_NOBODY, GID_NOBODY, GID_NOBODY) >= 0); | |
674 | assert_se(setresuid(UID_NOBODY, UID_NOBODY, UID_NOBODY) >= 0); | |
675 | full_test = true; | |
676 | } | |
677 | ||
678 | errno = 0; | |
679 | p = getpriority(PRIO_PROCESS, 0); | |
680 | assert_se(errno == 0); | |
681 | ||
682 | /* It should always be possible to set our nice level to the current one */ | |
683 | assert_se(setpriority_closest(p) > 0); | |
684 | ||
685 | errno = 0; | |
686 | q = getpriority(PRIO_PROCESS, 0); | |
687 | assert_se(errno == 0 && p == q); | |
688 | ||
cd990847 | 689 | /* It should also be possible to set the nice level to one higher */ |
75997c3f LP |
690 | if (p < PRIO_MAX-1) { |
691 | assert_se(setpriority_closest(++p) > 0); | |
692 | ||
693 | errno = 0; | |
694 | q = getpriority(PRIO_PROCESS, 0); | |
695 | assert_se(errno == 0 && p == q); | |
696 | } | |
697 | ||
cd990847 | 698 | /* It should also be possible to set the nice level to two higher */ |
75997c3f LP |
699 | if (p < PRIO_MAX-1) { |
700 | assert_se(setpriority_closest(++p) > 0); | |
701 | ||
702 | errno = 0; | |
703 | q = getpriority(PRIO_PROCESS, 0); | |
704 | assert_se(errno == 0 && p == q); | |
705 | } | |
706 | ||
707 | if (full_test) { | |
708 | /* These two should work, given the RLIMIT_NICE we set above */ | |
709 | assert_se(setpriority_closest(-10) > 0); | |
710 | errno = 0; | |
711 | q = getpriority(PRIO_PROCESS, 0); | |
712 | assert_se(errno == 0 && q == -10); | |
713 | ||
714 | assert_se(setpriority_closest(-9) > 0); | |
715 | errno = 0; | |
716 | q = getpriority(PRIO_PROCESS, 0); | |
717 | assert_se(errno == 0 && q == -9); | |
718 | ||
719 | /* This should succeed but should be clamped to the limit */ | |
720 | assert_se(setpriority_closest(-11) == 0); | |
721 | errno = 0; | |
722 | q = getpriority(PRIO_PROCESS, 0); | |
723 | assert_se(errno == 0 && q == -10); | |
724 | ||
725 | assert_se(setpriority_closest(-8) > 0); | |
726 | errno = 0; | |
727 | q = getpriority(PRIO_PROCESS, 0); | |
728 | assert_se(errno == 0 && q == -8); | |
729 | ||
730 | /* This should succeed but should be clamped to the limit */ | |
731 | assert_se(setpriority_closest(-12) == 0); | |
732 | errno = 0; | |
733 | q = getpriority(PRIO_PROCESS, 0); | |
734 | assert_se(errno == 0 && q == -10); | |
735 | } | |
736 | ||
737 | _exit(EXIT_SUCCESS); | |
738 | } | |
739 | } | |
740 | ||
c462e63e | 741 | TEST(get_process_ppid) { |
0c4d1e6d LP |
742 | uint64_t limit; |
743 | int r; | |
744 | ||
0c4d1e6d LP |
745 | assert_se(get_process_ppid(1, NULL) == -EADDRNOTAVAIL); |
746 | ||
747 | /* the process with the PID above the global limit definitely doesn't exist. Verify that */ | |
c3dead53 ZJS |
748 | assert_se(procfs_get_pid_max(&limit) >= 0); |
749 | log_debug("kernel.pid_max = %"PRIu64, limit); | |
750 | ||
751 | if (limit < INT_MAX) { | |
752 | r = get_process_ppid(limit + 1, NULL); | |
753 | log_debug_errno(r, "get_process_limit(%"PRIu64") → %d/%m", limit + 1, r); | |
754 | assert(r == -ESRCH); | |
755 | } | |
0c4d1e6d LP |
756 | |
757 | for (pid_t pid = 0;;) { | |
758 | _cleanup_free_ char *c1 = NULL, *c2 = NULL; | |
759 | pid_t ppid; | |
760 | ||
761 | r = get_process_ppid(pid, &ppid); | |
762 | if (r == -EADDRNOTAVAIL) { | |
763 | log_info("No further parent PID"); | |
764 | break; | |
765 | } | |
766 | ||
767 | assert_se(r >= 0); | |
768 | ||
769 | assert_se(get_process_cmdline(pid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &c1) >= 0); | |
770 | assert_se(get_process_cmdline(ppid, SIZE_MAX, PROCESS_CMDLINE_COMM_FALLBACK, &c2) >= 0); | |
771 | ||
772 | log_info("Parent of " PID_FMT " (%s) is " PID_FMT " (%s).", pid, c1, ppid, c2); | |
773 | ||
774 | pid = ppid; | |
775 | } | |
776 | } | |
777 | ||
c462e63e | 778 | TEST(set_oom_score_adjust) { |
bb2d1d8e LP |
779 | int a, b, r; |
780 | ||
781 | assert_se(get_oom_score_adjust(&a) >= 0); | |
782 | ||
783 | r = set_oom_score_adjust(OOM_SCORE_ADJ_MIN); | |
784 | assert_se(r >= 0 || ERRNO_IS_PRIVILEGE(r)); | |
785 | ||
786 | if (r >= 0) { | |
787 | assert_se(get_oom_score_adjust(&b) >= 0); | |
788 | assert_se(b == OOM_SCORE_ADJ_MIN); | |
789 | } | |
790 | ||
791 | assert_se(set_oom_score_adjust(a) >= 0); | |
792 | assert_se(get_oom_score_adjust(&b) >= 0); | |
793 | assert_se(b == a); | |
794 | } | |
795 | ||
99839c7e LP |
796 | static int intro(void) { |
797 | log_show_color(true); | |
798 | return EXIT_SUCCESS; | |
799 | } | |
800 | ||
e85fdacc | 801 | DEFINE_TEST_MAIN_WITH_INTRO(LOG_INFO, intro); |