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Commit | Line | Data |
---|---|---|
5cb5a6ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
2 | ||
cc13a98b LP |
3 | #pragma GCC diagnostic ignored "-Wattributes" |
4 | ||
5cb5a6ff | 5 | #include <assert.h> |
034c6ed7 LP |
6 | #include <dirent.h> |
7 | #include <errno.h> | |
8 | #include <fcntl.h> | |
9 | #include <unistd.h> | |
44d8db9e | 10 | #include <string.h> |
309bff19 | 11 | #include <signal.h> |
071830ff LP |
12 | #include <sys/socket.h> |
13 | #include <sys/un.h> | |
94f04347 | 14 | #include <sys/prctl.h> |
66ee3769 | 15 | #include <linux/sched.h> |
5cb5a6ff LP |
16 | |
17 | #include "execute.h" | |
18 | #include "strv.h" | |
19 | #include "macro.h" | |
20 | #include "util.h" | |
acbb0225 | 21 | #include "log.h" |
9eba9da4 | 22 | #include "ioprio.h" |
94f04347 | 23 | #include "securebits.h" |
5cb5a6ff | 24 | |
034c6ed7 LP |
25 | static int close_fds(int except[], unsigned n_except) { |
26 | DIR *d; | |
27 | struct dirent *de; | |
28 | int r = 0; | |
29 | ||
30 | /* Modifies the fds array! (sorts it) */ | |
31 | ||
32 | if (!(d = opendir("/proc/self/fd"))) | |
33 | return -errno; | |
34 | ||
35 | while ((de = readdir(d))) { | |
36 | int fd; | |
37 | ||
38 | if (de->d_name[0] == '.') | |
39 | continue; | |
40 | ||
41 | if ((r = safe_atoi(de->d_name, &fd)) < 0) | |
42 | goto finish; | |
43 | ||
44 | if (fd < 3) | |
45 | continue; | |
46 | ||
47 | if (fd == dirfd(d)) | |
48 | continue; | |
49 | ||
50 | if (except) { | |
51 | bool found; | |
52 | unsigned i; | |
53 | ||
54 | found = false; | |
55 | for (i = 0; i < n_except; i++) | |
56 | if (except[i] == fd) { | |
57 | found = true; | |
58 | break; | |
59 | } | |
60 | ||
61 | if (found) | |
62 | continue; | |
63 | } | |
64 | ||
65 | if ((r = close_nointr(fd)) < 0) | |
66 | goto finish; | |
67 | } | |
68 | ||
69 | finish: | |
70 | closedir(d); | |
71 | return r; | |
72 | } | |
73 | ||
74 | static int shift_fds(int fds[], unsigned n_fds) { | |
75 | int start, restart_from; | |
76 | ||
77 | if (n_fds <= 0) | |
78 | return 0; | |
79 | ||
80 | assert(fds); | |
81 | ||
82 | start = 0; | |
83 | for (;;) { | |
84 | int i; | |
85 | ||
86 | restart_from = -1; | |
87 | ||
88 | for (i = start; i < (int) n_fds; i++) { | |
89 | int nfd; | |
90 | ||
91 | /* Already at right index? */ | |
92 | if (fds[i] == i+3) | |
93 | continue; | |
94 | ||
95 | if ((nfd = fcntl(fds[i], F_DUPFD, i+3)) < 0) | |
96 | return -errno; | |
97 | ||
2da3263a | 98 | assert_se(close_nointr(fds[i]) == 0); |
034c6ed7 LP |
99 | fds[i] = nfd; |
100 | ||
101 | /* Hmm, the fd we wanted isn't free? Then | |
102 | * let's remember that and try again from here*/ | |
103 | if (nfd != i+3 && restart_from < 0) | |
104 | restart_from = i; | |
105 | } | |
106 | ||
107 | if (restart_from < 0) | |
108 | break; | |
109 | ||
110 | start = restart_from; | |
111 | } | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
47a71eed LP |
116 | static int flags_fds(int fds[], unsigned n_fds) { |
117 | unsigned i; | |
118 | ||
119 | if (n_fds <= 0) | |
120 | return 0; | |
121 | ||
122 | assert(fds); | |
123 | ||
124 | /* Drops O_NONBLOCK and FD_CLOEXEC from the file flags */ | |
125 | ||
126 | for (i = 0; i < n_fds; i++) { | |
127 | int flags; | |
128 | ||
129 | if ((flags = fcntl(fds[i], F_GETFL, 0)) < 0) | |
130 | return -errno; | |
131 | ||
132 | /* Since we are at it, let's make sure that nobody | |
133 | * forgot setting O_NONBLOCK for all our fds */ | |
134 | ||
135 | if (fcntl(fds[i], F_SETFL, flags &~O_NONBLOCK) < 0) | |
136 | return -errno; | |
137 | ||
138 | if ((flags = fcntl(fds[i], F_GETFD, 0)) < 0) | |
139 | return -errno; | |
140 | ||
141 | /* Also make sure nobody forgot O_CLOEXEC for all our | |
142 | * fds */ | |
143 | if (fcntl(fds[i], F_SETFD, flags &~FD_CLOEXEC) < 0) | |
144 | return -errno; | |
145 | } | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
071830ff LP |
150 | static int replace_null_fd(int fd, int flags) { |
151 | int nfd; | |
152 | assert(fd >= 0); | |
153 | ||
154 | close_nointr(fd); | |
155 | ||
156 | if ((nfd = open("/dev/null", flags|O_NOCTTY)) < 0) | |
157 | return -errno; | |
158 | ||
159 | if (nfd != fd) { | |
160 | close_nointr_nofail(nfd); | |
161 | return -EIO; | |
162 | } | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
167 | static int setup_output(const ExecContext *context, const char *ident) { | |
168 | int r; | |
169 | ||
170 | assert(context); | |
171 | ||
172 | switch (context->output) { | |
173 | ||
94f04347 | 174 | case EXEC_OUTPUT_CONSOLE: |
071830ff LP |
175 | return 0; |
176 | ||
94f04347 | 177 | case EXEC_OUTPUT_NULL: |
071830ff | 178 | |
94f04347 | 179 | if ((r = replace_null_fd(STDOUT_FILENO, O_WRONLY)) < 0 || |
071830ff LP |
180 | (r = replace_null_fd(STDERR_FILENO, O_WRONLY)) < 0) |
181 | return r; | |
182 | ||
183 | return 0; | |
184 | ||
94f04347 LP |
185 | case EXEC_OUTPUT_KERNEL: |
186 | case EXEC_OUTPUT_SYSLOG: { | |
071830ff LP |
187 | |
188 | int fd; | |
189 | union { | |
190 | struct sockaddr sa; | |
191 | struct sockaddr_un un; | |
192 | } sa; | |
193 | ||
071830ff LP |
194 | close_nointr(STDOUT_FILENO); |
195 | close_nointr(STDERR_FILENO); | |
196 | ||
197 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) | |
198 | return -errno; | |
199 | ||
200 | if (fd != STDOUT_FILENO) { | |
201 | close_nointr_nofail(fd); | |
202 | return -EIO; | |
203 | } | |
204 | ||
205 | zero(sa); | |
206 | sa.sa.sa_family = AF_UNIX; | |
207 | strncpy(sa.un.sun_path+1, LOGGER_SOCKET, sizeof(sa.un.sun_path)-1); | |
208 | ||
209 | if (connect(fd, &sa.sa, sizeof(sa)) < 0) { | |
210 | close_nointr_nofail(fd); | |
211 | return -errno; | |
212 | } | |
213 | ||
214 | if (shutdown(fd, SHUT_RD) < 0) { | |
215 | close_nointr_nofail(fd); | |
216 | return -errno; | |
217 | } | |
218 | ||
219 | if ((fd = dup(fd)) < 0) { | |
220 | close_nointr_nofail(fd); | |
221 | return -errno; | |
222 | } | |
223 | ||
224 | if (fd != STDERR_FILENO) { | |
225 | close_nointr_nofail(fd); | |
226 | return -EIO; | |
227 | } | |
228 | ||
229 | /* We speak a very simple protocol between log server | |
230 | * and client: one line for the log destination (kmsg | |
231 | * or syslog), followed by the priority field, | |
232 | * followed by the process name. Since we replaced | |
233 | * stdin/stderr we simple use stdio to write to | |
234 | * it. Note that we use stderr, to minimize buffer | |
235 | * flushing issues. */ | |
236 | ||
237 | fprintf(stderr, | |
238 | "%s\n" | |
239 | "%i\n" | |
240 | "%s\n", | |
94f04347 | 241 | context->output == EXEC_OUTPUT_KERNEL ? "kmsg" : "syslog", |
071830ff LP |
242 | context->syslog_priority, |
243 | context->syslog_identifier ? context->syslog_identifier : ident); | |
244 | ||
245 | return 0; | |
246 | } | |
94f04347 LP |
247 | |
248 | default: | |
249 | assert_not_reached("Unknown output type"); | |
071830ff | 250 | } |
94f04347 LP |
251 | } |
252 | ||
253 | int setup_input(const ExecContext *context) { | |
254 | int r; | |
255 | ||
256 | assert(context); | |
071830ff | 257 | |
94f04347 LP |
258 | switch (context->input) { |
259 | ||
260 | case EXEC_INPUT_CONSOLE: | |
261 | return 0; | |
262 | ||
263 | case EXEC_INPUT_NULL: | |
264 | if ((r = replace_null_fd(STDIN_FILENO, O_RDONLY)) < 0) | |
265 | return r; | |
266 | ||
267 | return 0; | |
268 | ||
269 | default: | |
270 | assert_not_reached("Unknown input type"); | |
271 | } | |
071830ff LP |
272 | } |
273 | ||
034c6ed7 LP |
274 | int exec_spawn(const ExecCommand *command, const ExecContext *context, int *fds, unsigned n_fds, pid_t *ret) { |
275 | pid_t pid; | |
276 | ||
5cb5a6ff LP |
277 | assert(command); |
278 | assert(context); | |
279 | assert(ret); | |
034c6ed7 LP |
280 | assert(fds || n_fds <= 0); |
281 | ||
2da3263a | 282 | log_debug("about to execute %s", command->path); |
acbb0225 | 283 | |
034c6ed7 LP |
284 | if ((pid = fork()) < 0) |
285 | return -errno; | |
286 | ||
287 | if (pid == 0) { | |
288 | char **e, **f = NULL; | |
289 | int i, r; | |
309bff19 LP |
290 | sigset_t ss; |
291 | ||
034c6ed7 | 292 | /* child */ |
5cb5a6ff | 293 | |
309bff19 LP |
294 | if (sigemptyset(&ss) < 0 || |
295 | sigprocmask(SIG_SETMASK, &ss, NULL) < 0) { | |
296 | r = EXIT_SIGNAL_MASK; | |
297 | goto fail; | |
298 | } | |
299 | ||
9eba9da4 LP |
300 | if (setpgid(0, 0) < 0) { |
301 | r = EXIT_PGID; | |
034c6ed7 LP |
302 | goto fail; |
303 | } | |
304 | ||
9eba9da4 LP |
305 | umask(context->umask); |
306 | ||
94f04347 LP |
307 | if (setup_input(context) < 0) { |
308 | r = EXIT_INPUT; | |
309 | goto fail; | |
310 | } | |
311 | ||
071830ff LP |
312 | if (setup_output(context, file_name_from_path(command->path)) < 0) { |
313 | r = EXIT_OUTPUT; | |
314 | goto fail; | |
315 | } | |
316 | ||
fb33a393 LP |
317 | if (context->oom_adjust_set) { |
318 | char t[16]; | |
034c6ed7 | 319 | |
fb33a393 LP |
320 | snprintf(t, sizeof(t), "%i", context->oom_adjust); |
321 | char_array_0(t); | |
034c6ed7 | 322 | |
fb33a393 LP |
323 | if (write_one_line_file("/proc/self/oom_adj", t) < 0) { |
324 | r = EXIT_OOM_ADJUST; | |
325 | goto fail; | |
326 | } | |
034c6ed7 LP |
327 | } |
328 | ||
9eba9da4 LP |
329 | if (context->root_directory) |
330 | if (chroot(context->root_directory) < 0) { | |
331 | r = EXIT_CHROOT; | |
332 | goto fail; | |
333 | } | |
334 | ||
335 | if (chdir(context->working_directory ? context->working_directory : "/") < 0) { | |
336 | r = EXIT_CHDIR; | |
337 | goto fail; | |
338 | } | |
339 | ||
fb33a393 LP |
340 | if (context->nice_set) |
341 | if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) { | |
342 | r = EXIT_NICE; | |
343 | goto fail; | |
344 | } | |
345 | ||
94f04347 LP |
346 | if (context->cpu_sched_set) { |
347 | struct sched_param param; | |
348 | ||
349 | zero(param); | |
350 | param.sched_priority = context->cpu_sched_priority; | |
351 | ||
38b48754 LP |
352 | if (sched_setscheduler(0, context->cpu_sched_policy | |
353 | (context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), ¶m) < 0) { | |
94f04347 LP |
354 | r = EXIT_SETSCHEDULER; |
355 | goto fail; | |
356 | } | |
357 | } | |
358 | ||
359 | if (context->cpu_affinity_set) | |
360 | if (sched_setaffinity(0, sizeof(context->cpu_affinity), &context->cpu_affinity) < 0) { | |
361 | r = EXIT_CPUAFFINITY; | |
362 | goto fail; | |
363 | } | |
364 | ||
9eba9da4 LP |
365 | if (context->ioprio_set) |
366 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, context->ioprio) < 0) { | |
367 | r = EXIT_IOPRIO; | |
368 | goto fail; | |
369 | } | |
370 | ||
94f04347 LP |
371 | if (context->timer_slack_ns_set) |
372 | if (prctl(PR_SET_TIMERSLACK, context->timer_slack_ns_set) < 0) { | |
373 | r = EXIT_TIMERSLACK; | |
374 | goto fail; | |
375 | } | |
376 | ||
034c6ed7 | 377 | if (close_fds(fds, n_fds) < 0 || |
47a71eed LP |
378 | shift_fds(fds, n_fds) < 0 || |
379 | flags_fds(fds, n_fds) < 0) { | |
034c6ed7 LP |
380 | r = EXIT_FDS; |
381 | goto fail; | |
382 | } | |
383 | ||
384 | for (i = 0; i < RLIMIT_NLIMITS; i++) { | |
385 | if (!context->rlimit[i]) | |
386 | continue; | |
387 | ||
388 | if (setrlimit(i, context->rlimit[i]) < 0) { | |
389 | r = EXIT_LIMITS; | |
390 | goto fail; | |
391 | } | |
392 | } | |
393 | ||
94f04347 LP |
394 | if (context->secure_bits) { |
395 | if (prctl(PR_SET_SECUREBITS, context->secure_bits) < 0) { | |
396 | r = EXIT_SECUREBITS; | |
397 | goto fail; | |
398 | } | |
399 | } | |
400 | ||
034c6ed7 LP |
401 | if (n_fds > 0) { |
402 | char a[64], b[64]; | |
403 | char *listen_env[3] = { | |
404 | a, | |
405 | b, | |
406 | NULL | |
407 | }; | |
408 | ||
409 | snprintf(a, sizeof(a), "LISTEN_PID=%llu", (unsigned long long) getpid()); | |
410 | snprintf(b, sizeof(b), "LISTEN_FDS=%u", n_fds); | |
411 | ||
412 | a[sizeof(a)-1] = 0; | |
413 | b[sizeof(b)-1] = 0; | |
414 | ||
415 | if (context->environment) { | |
416 | if (!(f = strv_merge(listen_env, context->environment))) { | |
417 | r = EXIT_MEMORY; | |
418 | goto fail; | |
419 | } | |
420 | e = f; | |
421 | } else | |
422 | e = listen_env; | |
423 | ||
424 | } else | |
425 | e = context->environment; | |
426 | ||
427 | execve(command->path, command->argv, e); | |
428 | r = EXIT_EXEC; | |
429 | ||
430 | fail: | |
431 | strv_free(f); | |
432 | _exit(r); | |
433 | } | |
434 | ||
2da3263a LP |
435 | |
436 | log_debug("executed %s as %llu", command->path, (unsigned long long) pid); | |
437 | ||
034c6ed7 | 438 | *ret = pid; |
5cb5a6ff LP |
439 | return 0; |
440 | } | |
441 | ||
034c6ed7 LP |
442 | void exec_context_init(ExecContext *c) { |
443 | assert(c); | |
444 | ||
445 | c->umask = 0002; | |
034c6ed7 | 446 | c->oom_adjust = 0; |
9eba9da4 | 447 | c->oom_adjust_set = false; |
034c6ed7 | 448 | c->nice = 0; |
9eba9da4 LP |
449 | c->nice_set = false; |
450 | c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0); | |
451 | c->ioprio_set = false; | |
94f04347 LP |
452 | c->cpu_sched_policy = SCHED_OTHER; |
453 | c->cpu_sched_priority = 0; | |
454 | c->cpu_sched_set = false; | |
455 | CPU_ZERO(&c->cpu_affinity); | |
456 | c->cpu_affinity_set = false; | |
071830ff | 457 | |
94f04347 | 458 | c->input = 0; |
071830ff LP |
459 | c->output = 0; |
460 | c->syslog_priority = LOG_DAEMON|LOG_INFO; | |
94f04347 LP |
461 | |
462 | c->secure_bits = 0; | |
463 | c->capability_bounding_set_drop = 0; | |
034c6ed7 LP |
464 | } |
465 | ||
466 | void exec_context_done(ExecContext *c) { | |
5cb5a6ff LP |
467 | unsigned l; |
468 | ||
469 | assert(c); | |
470 | ||
471 | strv_free(c->environment); | |
034c6ed7 | 472 | c->environment = NULL; |
5cb5a6ff | 473 | |
034c6ed7 | 474 | for (l = 0; l < ELEMENTSOF(c->rlimit); l++) { |
5cb5a6ff | 475 | free(c->rlimit[l]); |
034c6ed7 LP |
476 | c->rlimit[l] = NULL; |
477 | } | |
478 | ||
9eba9da4 LP |
479 | free(c->working_directory); |
480 | c->working_directory = NULL; | |
481 | free(c->root_directory); | |
482 | c->root_directory = NULL; | |
5cb5a6ff | 483 | |
071830ff LP |
484 | free(c->syslog_identifier); |
485 | c->syslog_identifier = NULL; | |
486 | ||
5cb5a6ff | 487 | free(c->user); |
034c6ed7 LP |
488 | c->user = NULL; |
489 | ||
5cb5a6ff | 490 | free(c->group); |
034c6ed7 LP |
491 | c->group = NULL; |
492 | ||
493 | strv_free(c->supplementary_groups); | |
494 | c->supplementary_groups = NULL; | |
94f04347 LP |
495 | |
496 | if (c->capabilities) { | |
497 | cap_free(c->capabilities); | |
498 | c->capabilities = NULL; | |
499 | } | |
5cb5a6ff LP |
500 | } |
501 | ||
502 | void exec_command_free_list(ExecCommand *c) { | |
503 | ExecCommand *i; | |
504 | ||
505 | while ((i = c)) { | |
034c6ed7 | 506 | LIST_REMOVE(ExecCommand, command, c, i); |
5cb5a6ff LP |
507 | |
508 | free(i->path); | |
44d8db9e | 509 | strv_free(i->argv); |
5cb5a6ff LP |
510 | free(i); |
511 | } | |
512 | } | |
513 | ||
034c6ed7 LP |
514 | void exec_command_free_array(ExecCommand **c, unsigned n) { |
515 | unsigned i; | |
516 | ||
517 | for (i = 0; i < n; i++) { | |
518 | exec_command_free_list(c[i]); | |
519 | c[i] = NULL; | |
520 | } | |
521 | } | |
522 | ||
5cb5a6ff | 523 | void exec_context_dump(ExecContext *c, FILE* f, const char *prefix) { |
94f04347 LP |
524 | char ** e; |
525 | unsigned i; | |
9eba9da4 | 526 | |
5cb5a6ff LP |
527 | assert(c); |
528 | assert(f); | |
529 | ||
530 | if (!prefix) | |
531 | prefix = ""; | |
532 | ||
533 | fprintf(f, | |
94f04347 LP |
534 | "%sUMask: %04o\n" |
535 | "%sWorkingDirectory: %s\n" | |
536 | "%sRootDirectory: %s\n", | |
5cb5a6ff | 537 | prefix, c->umask, |
9eba9da4 LP |
538 | prefix, c->working_directory ? c->working_directory : "/", |
539 | prefix, c->root_directory ? c->root_directory : "/"); | |
fb33a393 | 540 | |
94f04347 LP |
541 | if (c->environment) |
542 | for (e = c->environment; *e; e++) | |
543 | fprintf(f, "%sEnvironment: %s\n", prefix, *e); | |
544 | ||
fb33a393 LP |
545 | if (c->nice_set) |
546 | fprintf(f, | |
547 | "%sNice: %i\n", | |
548 | prefix, c->nice); | |
549 | ||
550 | if (c->oom_adjust_set) | |
551 | fprintf(f, | |
552 | "%sOOMAdjust: %i\n", | |
553 | prefix, c->oom_adjust); | |
9eba9da4 | 554 | |
94f04347 LP |
555 | for (i = 0; i < RLIM_NLIMITS; i++) |
556 | if (c->rlimit[i]) | |
ea430986 | 557 | fprintf(f, "%s%s: %llu\n", prefix, rlimit_to_string(i), (unsigned long long) c->rlimit[i]->rlim_max); |
94f04347 | 558 | |
9eba9da4 LP |
559 | if (c->ioprio_set) |
560 | fprintf(f, | |
561 | "%sIOSchedulingClass: %s\n" | |
562 | "%sIOPriority: %i\n", | |
94f04347 | 563 | prefix, ioprio_class_to_string(IOPRIO_PRIO_CLASS(c->ioprio)), |
9eba9da4 | 564 | prefix, (int) IOPRIO_PRIO_DATA(c->ioprio)); |
94f04347 LP |
565 | |
566 | if (c->cpu_sched_set) | |
567 | fprintf(f, | |
568 | "%sCPUSchedulingPolicy: %s\n" | |
38b48754 LP |
569 | "%sCPUSchedulingPriority: %i\n" |
570 | "%sCPUSchedulingResetOnFork: %s\n", | |
94f04347 | 571 | prefix, sched_policy_to_string(c->cpu_sched_policy), |
38b48754 LP |
572 | prefix, c->cpu_sched_priority, |
573 | prefix, yes_no(c->cpu_sched_reset_on_fork)); | |
94f04347 LP |
574 | |
575 | if (c->cpu_affinity_set) { | |
576 | fprintf(f, "%sCPUAffinity:", prefix); | |
577 | for (i = 0; i < CPU_SETSIZE; i++) | |
578 | if (CPU_ISSET(i, &c->cpu_affinity)) | |
579 | fprintf(f, " %i", i); | |
580 | fputs("\n", f); | |
581 | } | |
582 | ||
583 | if (c->timer_slack_ns_set) | |
584 | fprintf(f, "%sTimerSlackNS: %lu\n", prefix, c->timer_slack_ns); | |
585 | ||
586 | fprintf(f, | |
587 | "%sInput: %s\n" | |
588 | "%sOutput: %s\n", | |
589 | prefix, exec_input_to_string(c->input), | |
590 | prefix, exec_output_to_string(c->output)); | |
591 | ||
592 | if (c->output == EXEC_OUTPUT_SYSLOG || c->output == EXEC_OUTPUT_KERNEL) | |
593 | fprintf(f, | |
594 | "%sSyslogFacility: %s\n" | |
595 | "%sSyslogLevel: %s\n", | |
596 | prefix, log_facility_to_string(LOG_FAC(c->syslog_priority)), | |
597 | prefix, log_level_to_string(LOG_PRI(c->syslog_priority))); | |
598 | ||
599 | if (c->capabilities) { | |
600 | char *t; | |
601 | if ((t = cap_to_text(c->capabilities, NULL))) { | |
602 | fprintf(f, "%sCapabilities: %s\n", | |
603 | prefix, t); | |
604 | cap_free(t); | |
605 | } | |
606 | } | |
607 | ||
608 | if (c->secure_bits) | |
609 | fprintf(f, "%sSecure Bits:%s%s%s%s%s%s\n", | |
610 | prefix, | |
611 | (c->secure_bits & SECURE_KEEP_CAPS) ? " keep-caps" : "", | |
612 | (c->secure_bits & SECURE_KEEP_CAPS_LOCKED) ? " keep-caps-locked" : "", | |
613 | (c->secure_bits & SECURE_NO_SETUID_FIXUP) ? " no-setuid-fixup" : "", | |
614 | (c->secure_bits & SECURE_NO_SETUID_FIXUP_LOCKED) ? " no-setuid-fixup-locked" : "", | |
615 | (c->secure_bits & SECURE_NOROOT) ? " noroot" : "", | |
616 | (c->secure_bits & SECURE_NOROOT_LOCKED) ? "noroot-locked" : ""); | |
617 | ||
618 | if (c->capability_bounding_set_drop) { | |
619 | fprintf(f, "%sCapabilityBoundingSetDrop:", prefix); | |
620 | ||
621 | for (i = 0; i <= CAP_LAST_CAP; i++) | |
622 | if (c->capability_bounding_set_drop & (1 << i)) { | |
623 | char *t; | |
624 | ||
625 | if ((t = cap_to_name(i))) { | |
626 | fprintf(f, " %s", t); | |
627 | free(t); | |
628 | } | |
629 | } | |
630 | ||
631 | fputs("\n", f); | |
632 | } | |
633 | ||
634 | if (c->user) | |
635 | fprintf(f, "%sUser: %s", prefix, c->user); | |
636 | if (c->group) | |
637 | fprintf(f, "%sGroup: %s", prefix, c->group); | |
638 | ||
639 | if (c->supplementary_groups) { | |
640 | char **g; | |
641 | ||
642 | fprintf(f, "%sSupplementaryGroups:", prefix); | |
643 | ||
644 | STRV_FOREACH(g, c->supplementary_groups) | |
645 | fprintf(f, " %s", *g); | |
646 | ||
647 | fputs("\n", f); | |
648 | } | |
5cb5a6ff LP |
649 | } |
650 | ||
034c6ed7 LP |
651 | void exec_status_fill(ExecStatus *s, pid_t pid, int code, int status) { |
652 | assert(s); | |
5cb5a6ff | 653 | |
034c6ed7 LP |
654 | s->pid = pid; |
655 | s->code = code; | |
656 | s->status = status; | |
657 | s->timestamp = now(CLOCK_REALTIME); | |
5cb5a6ff | 658 | } |
44d8db9e LP |
659 | |
660 | char *exec_command_line(ExecCommand *c) { | |
661 | size_t k; | |
662 | char *n, *p, **a; | |
663 | bool first = true; | |
664 | ||
665 | assert(c); | |
666 | assert(c->argv); | |
667 | ||
9164977d | 668 | k = 1; |
44d8db9e LP |
669 | STRV_FOREACH(a, c->argv) |
670 | k += strlen(*a)+3; | |
671 | ||
672 | if (!(n = new(char, k))) | |
673 | return NULL; | |
674 | ||
675 | p = n; | |
676 | STRV_FOREACH(a, c->argv) { | |
677 | ||
678 | if (!first) | |
679 | *(p++) = ' '; | |
680 | else | |
681 | first = false; | |
682 | ||
683 | if (strpbrk(*a, WHITESPACE)) { | |
684 | *(p++) = '\''; | |
685 | p = stpcpy(p, *a); | |
686 | *(p++) = '\''; | |
687 | } else | |
688 | p = stpcpy(p, *a); | |
689 | ||
690 | } | |
691 | ||
9164977d LP |
692 | *p = 0; |
693 | ||
44d8db9e LP |
694 | /* FIXME: this doesn't really handle arguments that have |
695 | * spaces and ticks in them */ | |
696 | ||
697 | return n; | |
698 | } | |
699 | ||
700 | void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) { | |
701 | char *cmd; | |
702 | ||
703 | assert(c); | |
704 | assert(f); | |
705 | ||
706 | if (!prefix) | |
707 | prefix = ""; | |
708 | ||
709 | cmd = exec_command_line(c); | |
710 | ||
711 | fprintf(f, | |
712 | "%sCommand Line: %s\n", | |
713 | prefix, cmd ? cmd : strerror(ENOMEM)); | |
714 | ||
715 | free(cmd); | |
716 | } | |
717 | ||
718 | void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix) { | |
719 | assert(f); | |
720 | ||
721 | if (!prefix) | |
722 | prefix = ""; | |
723 | ||
724 | LIST_FOREACH(command, c, c) | |
725 | exec_command_dump(c, f, prefix); | |
726 | } | |
94f04347 LP |
727 | |
728 | static const char* const exec_output_table[_EXEC_OUTPUT_MAX] = { | |
729 | [EXEC_OUTPUT_CONSOLE] = "console", | |
730 | [EXEC_OUTPUT_NULL] = "null", | |
731 | [EXEC_OUTPUT_SYSLOG] = "syslog", | |
732 | [EXEC_OUTPUT_KERNEL] = "kernel" | |
733 | }; | |
734 | ||
735 | DEFINE_STRING_TABLE_LOOKUP(exec_output, ExecOutput); | |
736 | ||
737 | static const char* const exec_input_table[_EXEC_INPUT_MAX] = { | |
738 | [EXEC_INPUT_NULL] = "null", | |
739 | [EXEC_INPUT_CONSOLE] = "console" | |
740 | }; | |
741 | ||
742 | DEFINE_STRING_TABLE_LOOKUP(exec_input, ExecInput); |