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Commit | Line | Data |
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5cb5a6ff LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
2 | ||
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 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 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
5cb5a6ff | 22 | #include <assert.h> |
034c6ed7 LP |
23 | #include <dirent.h> |
24 | #include <errno.h> | |
25 | #include <fcntl.h> | |
26 | #include <unistd.h> | |
44d8db9e | 27 | #include <string.h> |
309bff19 | 28 | #include <signal.h> |
071830ff LP |
29 | #include <sys/socket.h> |
30 | #include <sys/un.h> | |
94f04347 | 31 | #include <sys/prctl.h> |
66ee3769 | 32 | #include <linux/sched.h> |
5cb5a6ff LP |
33 | |
34 | #include "execute.h" | |
35 | #include "strv.h" | |
36 | #include "macro.h" | |
37 | #include "util.h" | |
acbb0225 | 38 | #include "log.h" |
9eba9da4 | 39 | #include "ioprio.h" |
94f04347 | 40 | #include "securebits.h" |
5cb5a6ff | 41 | |
034c6ed7 LP |
42 | static int close_fds(int except[], unsigned n_except) { |
43 | DIR *d; | |
44 | struct dirent *de; | |
45 | int r = 0; | |
46 | ||
47 | /* Modifies the fds array! (sorts it) */ | |
48 | ||
49 | if (!(d = opendir("/proc/self/fd"))) | |
50 | return -errno; | |
51 | ||
52 | while ((de = readdir(d))) { | |
53 | int fd; | |
54 | ||
55 | if (de->d_name[0] == '.') | |
56 | continue; | |
57 | ||
58 | if ((r = safe_atoi(de->d_name, &fd)) < 0) | |
59 | goto finish; | |
60 | ||
61 | if (fd < 3) | |
62 | continue; | |
63 | ||
64 | if (fd == dirfd(d)) | |
65 | continue; | |
66 | ||
67 | if (except) { | |
68 | bool found; | |
69 | unsigned i; | |
70 | ||
71 | found = false; | |
72 | for (i = 0; i < n_except; i++) | |
73 | if (except[i] == fd) { | |
74 | found = true; | |
75 | break; | |
76 | } | |
77 | ||
78 | if (found) | |
79 | continue; | |
80 | } | |
81 | ||
82 | if ((r = close_nointr(fd)) < 0) | |
83 | goto finish; | |
84 | } | |
85 | ||
86 | finish: | |
87 | closedir(d); | |
88 | return r; | |
89 | } | |
90 | ||
91 | static int shift_fds(int fds[], unsigned n_fds) { | |
92 | int start, restart_from; | |
93 | ||
94 | if (n_fds <= 0) | |
95 | return 0; | |
96 | ||
97 | assert(fds); | |
98 | ||
99 | start = 0; | |
100 | for (;;) { | |
101 | int i; | |
102 | ||
103 | restart_from = -1; | |
104 | ||
105 | for (i = start; i < (int) n_fds; i++) { | |
106 | int nfd; | |
107 | ||
108 | /* Already at right index? */ | |
109 | if (fds[i] == i+3) | |
110 | continue; | |
111 | ||
112 | if ((nfd = fcntl(fds[i], F_DUPFD, i+3)) < 0) | |
113 | return -errno; | |
114 | ||
2da3263a | 115 | assert_se(close_nointr(fds[i]) == 0); |
034c6ed7 LP |
116 | fds[i] = nfd; |
117 | ||
118 | /* Hmm, the fd we wanted isn't free? Then | |
119 | * let's remember that and try again from here*/ | |
120 | if (nfd != i+3 && restart_from < 0) | |
121 | restart_from = i; | |
122 | } | |
123 | ||
124 | if (restart_from < 0) | |
125 | break; | |
126 | ||
127 | start = restart_from; | |
128 | } | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
47a71eed LP |
133 | static int flags_fds(int fds[], unsigned n_fds) { |
134 | unsigned i; | |
135 | ||
136 | if (n_fds <= 0) | |
137 | return 0; | |
138 | ||
139 | assert(fds); | |
140 | ||
141 | /* Drops O_NONBLOCK and FD_CLOEXEC from the file flags */ | |
142 | ||
143 | for (i = 0; i < n_fds; i++) { | |
144 | int flags; | |
145 | ||
146 | if ((flags = fcntl(fds[i], F_GETFL, 0)) < 0) | |
147 | return -errno; | |
148 | ||
149 | /* Since we are at it, let's make sure that nobody | |
150 | * forgot setting O_NONBLOCK for all our fds */ | |
151 | ||
152 | if (fcntl(fds[i], F_SETFL, flags &~O_NONBLOCK) < 0) | |
153 | return -errno; | |
154 | ||
155 | if ((flags = fcntl(fds[i], F_GETFD, 0)) < 0) | |
156 | return -errno; | |
157 | ||
158 | /* Also make sure nobody forgot O_CLOEXEC for all our | |
159 | * fds */ | |
160 | if (fcntl(fds[i], F_SETFD, flags &~FD_CLOEXEC) < 0) | |
161 | return -errno; | |
162 | } | |
163 | ||
164 | return 0; | |
165 | } | |
166 | ||
071830ff LP |
167 | static int replace_null_fd(int fd, int flags) { |
168 | int nfd; | |
169 | assert(fd >= 0); | |
170 | ||
171 | close_nointr(fd); | |
172 | ||
173 | if ((nfd = open("/dev/null", flags|O_NOCTTY)) < 0) | |
174 | return -errno; | |
175 | ||
176 | if (nfd != fd) { | |
177 | close_nointr_nofail(nfd); | |
178 | return -EIO; | |
179 | } | |
180 | ||
181 | return 0; | |
182 | } | |
183 | ||
184 | static int setup_output(const ExecContext *context, const char *ident) { | |
185 | int r; | |
186 | ||
187 | assert(context); | |
188 | ||
189 | switch (context->output) { | |
190 | ||
94f04347 | 191 | case EXEC_OUTPUT_CONSOLE: |
071830ff LP |
192 | return 0; |
193 | ||
94f04347 | 194 | case EXEC_OUTPUT_NULL: |
071830ff | 195 | |
94f04347 | 196 | if ((r = replace_null_fd(STDOUT_FILENO, O_WRONLY)) < 0 || |
071830ff LP |
197 | (r = replace_null_fd(STDERR_FILENO, O_WRONLY)) < 0) |
198 | return r; | |
199 | ||
200 | return 0; | |
201 | ||
94f04347 LP |
202 | case EXEC_OUTPUT_KERNEL: |
203 | case EXEC_OUTPUT_SYSLOG: { | |
071830ff LP |
204 | |
205 | int fd; | |
206 | union { | |
207 | struct sockaddr sa; | |
208 | struct sockaddr_un un; | |
209 | } sa; | |
210 | ||
071830ff LP |
211 | close_nointr(STDOUT_FILENO); |
212 | close_nointr(STDERR_FILENO); | |
213 | ||
214 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) | |
215 | return -errno; | |
216 | ||
217 | if (fd != STDOUT_FILENO) { | |
218 | close_nointr_nofail(fd); | |
219 | return -EIO; | |
220 | } | |
221 | ||
222 | zero(sa); | |
223 | sa.sa.sa_family = AF_UNIX; | |
224 | strncpy(sa.un.sun_path+1, LOGGER_SOCKET, sizeof(sa.un.sun_path)-1); | |
225 | ||
226 | if (connect(fd, &sa.sa, sizeof(sa)) < 0) { | |
227 | close_nointr_nofail(fd); | |
228 | return -errno; | |
229 | } | |
230 | ||
231 | if (shutdown(fd, SHUT_RD) < 0) { | |
232 | close_nointr_nofail(fd); | |
233 | return -errno; | |
234 | } | |
235 | ||
236 | if ((fd = dup(fd)) < 0) { | |
237 | close_nointr_nofail(fd); | |
238 | return -errno; | |
239 | } | |
240 | ||
241 | if (fd != STDERR_FILENO) { | |
242 | close_nointr_nofail(fd); | |
243 | return -EIO; | |
244 | } | |
245 | ||
246 | /* We speak a very simple protocol between log server | |
247 | * and client: one line for the log destination (kmsg | |
248 | * or syslog), followed by the priority field, | |
249 | * followed by the process name. Since we replaced | |
250 | * stdin/stderr we simple use stdio to write to | |
251 | * it. Note that we use stderr, to minimize buffer | |
252 | * flushing issues. */ | |
253 | ||
254 | fprintf(stderr, | |
255 | "%s\n" | |
256 | "%i\n" | |
257 | "%s\n", | |
94f04347 | 258 | context->output == EXEC_OUTPUT_KERNEL ? "kmsg" : "syslog", |
071830ff LP |
259 | context->syslog_priority, |
260 | context->syslog_identifier ? context->syslog_identifier : ident); | |
261 | ||
262 | return 0; | |
263 | } | |
94f04347 LP |
264 | |
265 | default: | |
266 | assert_not_reached("Unknown output type"); | |
071830ff | 267 | } |
94f04347 LP |
268 | } |
269 | ||
47be870b | 270 | static int setup_input(const ExecContext *context) { |
94f04347 LP |
271 | int r; |
272 | ||
273 | assert(context); | |
071830ff | 274 | |
94f04347 LP |
275 | switch (context->input) { |
276 | ||
277 | case EXEC_INPUT_CONSOLE: | |
278 | return 0; | |
279 | ||
280 | case EXEC_INPUT_NULL: | |
281 | if ((r = replace_null_fd(STDIN_FILENO, O_RDONLY)) < 0) | |
282 | return r; | |
283 | ||
284 | return 0; | |
285 | ||
286 | default: | |
287 | assert_not_reached("Unknown input type"); | |
288 | } | |
071830ff LP |
289 | } |
290 | ||
034c6ed7 LP |
291 | int exec_spawn(const ExecCommand *command, const ExecContext *context, int *fds, unsigned n_fds, pid_t *ret) { |
292 | pid_t pid; | |
293 | ||
5cb5a6ff LP |
294 | assert(command); |
295 | assert(context); | |
296 | assert(ret); | |
034c6ed7 LP |
297 | assert(fds || n_fds <= 0); |
298 | ||
2da3263a | 299 | log_debug("about to execute %s", command->path); |
acbb0225 | 300 | |
034c6ed7 LP |
301 | if ((pid = fork()) < 0) |
302 | return -errno; | |
303 | ||
304 | if (pid == 0) { | |
305 | char **e, **f = NULL; | |
306 | int i, r; | |
309bff19 LP |
307 | sigset_t ss; |
308 | ||
034c6ed7 | 309 | /* child */ |
5cb5a6ff | 310 | |
309bff19 LP |
311 | if (sigemptyset(&ss) < 0 || |
312 | sigprocmask(SIG_SETMASK, &ss, NULL) < 0) { | |
313 | r = EXIT_SIGNAL_MASK; | |
314 | goto fail; | |
315 | } | |
316 | ||
9eba9da4 LP |
317 | if (setpgid(0, 0) < 0) { |
318 | r = EXIT_PGID; | |
034c6ed7 LP |
319 | goto fail; |
320 | } | |
321 | ||
9eba9da4 LP |
322 | umask(context->umask); |
323 | ||
94f04347 LP |
324 | if (setup_input(context) < 0) { |
325 | r = EXIT_INPUT; | |
326 | goto fail; | |
327 | } | |
328 | ||
071830ff LP |
329 | if (setup_output(context, file_name_from_path(command->path)) < 0) { |
330 | r = EXIT_OUTPUT; | |
331 | goto fail; | |
332 | } | |
333 | ||
fb33a393 LP |
334 | if (context->oom_adjust_set) { |
335 | char t[16]; | |
034c6ed7 | 336 | |
fb33a393 LP |
337 | snprintf(t, sizeof(t), "%i", context->oom_adjust); |
338 | char_array_0(t); | |
034c6ed7 | 339 | |
fb33a393 LP |
340 | if (write_one_line_file("/proc/self/oom_adj", t) < 0) { |
341 | r = EXIT_OOM_ADJUST; | |
342 | goto fail; | |
343 | } | |
034c6ed7 LP |
344 | } |
345 | ||
9eba9da4 LP |
346 | if (context->root_directory) |
347 | if (chroot(context->root_directory) < 0) { | |
348 | r = EXIT_CHROOT; | |
349 | goto fail; | |
350 | } | |
351 | ||
352 | if (chdir(context->working_directory ? context->working_directory : "/") < 0) { | |
353 | r = EXIT_CHDIR; | |
354 | goto fail; | |
355 | } | |
356 | ||
fb33a393 LP |
357 | if (context->nice_set) |
358 | if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) { | |
359 | r = EXIT_NICE; | |
360 | goto fail; | |
361 | } | |
362 | ||
94f04347 LP |
363 | if (context->cpu_sched_set) { |
364 | struct sched_param param; | |
365 | ||
366 | zero(param); | |
367 | param.sched_priority = context->cpu_sched_priority; | |
368 | ||
38b48754 LP |
369 | if (sched_setscheduler(0, context->cpu_sched_policy | |
370 | (context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), ¶m) < 0) { | |
94f04347 LP |
371 | r = EXIT_SETSCHEDULER; |
372 | goto fail; | |
373 | } | |
374 | } | |
375 | ||
376 | if (context->cpu_affinity_set) | |
377 | if (sched_setaffinity(0, sizeof(context->cpu_affinity), &context->cpu_affinity) < 0) { | |
378 | r = EXIT_CPUAFFINITY; | |
379 | goto fail; | |
380 | } | |
381 | ||
9eba9da4 LP |
382 | if (context->ioprio_set) |
383 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, context->ioprio) < 0) { | |
384 | r = EXIT_IOPRIO; | |
385 | goto fail; | |
386 | } | |
387 | ||
94f04347 LP |
388 | if (context->timer_slack_ns_set) |
389 | if (prctl(PR_SET_TIMERSLACK, context->timer_slack_ns_set) < 0) { | |
390 | r = EXIT_TIMERSLACK; | |
391 | goto fail; | |
392 | } | |
393 | ||
034c6ed7 | 394 | if (close_fds(fds, n_fds) < 0 || |
47a71eed LP |
395 | shift_fds(fds, n_fds) < 0 || |
396 | flags_fds(fds, n_fds) < 0) { | |
034c6ed7 LP |
397 | r = EXIT_FDS; |
398 | goto fail; | |
399 | } | |
400 | ||
401 | for (i = 0; i < RLIMIT_NLIMITS; i++) { | |
402 | if (!context->rlimit[i]) | |
403 | continue; | |
404 | ||
405 | if (setrlimit(i, context->rlimit[i]) < 0) { | |
406 | r = EXIT_LIMITS; | |
407 | goto fail; | |
408 | } | |
409 | } | |
410 | ||
94f04347 LP |
411 | if (context->secure_bits) { |
412 | if (prctl(PR_SET_SECUREBITS, context->secure_bits) < 0) { | |
413 | r = EXIT_SECUREBITS; | |
414 | goto fail; | |
415 | } | |
416 | } | |
417 | ||
034c6ed7 LP |
418 | if (n_fds > 0) { |
419 | char a[64], b[64]; | |
420 | char *listen_env[3] = { | |
421 | a, | |
422 | b, | |
423 | NULL | |
424 | }; | |
425 | ||
426 | snprintf(a, sizeof(a), "LISTEN_PID=%llu", (unsigned long long) getpid()); | |
427 | snprintf(b, sizeof(b), "LISTEN_FDS=%u", n_fds); | |
428 | ||
429 | a[sizeof(a)-1] = 0; | |
430 | b[sizeof(b)-1] = 0; | |
431 | ||
432 | if (context->environment) { | |
433 | if (!(f = strv_merge(listen_env, context->environment))) { | |
434 | r = EXIT_MEMORY; | |
435 | goto fail; | |
436 | } | |
437 | e = f; | |
438 | } else | |
439 | e = listen_env; | |
440 | ||
441 | } else | |
442 | e = context->environment; | |
443 | ||
444 | execve(command->path, command->argv, e); | |
445 | r = EXIT_EXEC; | |
446 | ||
447 | fail: | |
448 | strv_free(f); | |
449 | _exit(r); | |
450 | } | |
451 | ||
2da3263a LP |
452 | |
453 | log_debug("executed %s as %llu", command->path, (unsigned long long) pid); | |
454 | ||
034c6ed7 | 455 | *ret = pid; |
5cb5a6ff LP |
456 | return 0; |
457 | } | |
458 | ||
034c6ed7 LP |
459 | void exec_context_init(ExecContext *c) { |
460 | assert(c); | |
461 | ||
462 | c->umask = 0002; | |
034c6ed7 | 463 | c->oom_adjust = 0; |
9eba9da4 | 464 | c->oom_adjust_set = false; |
034c6ed7 | 465 | c->nice = 0; |
9eba9da4 LP |
466 | c->nice_set = false; |
467 | c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0); | |
468 | c->ioprio_set = false; | |
94f04347 LP |
469 | c->cpu_sched_policy = SCHED_OTHER; |
470 | c->cpu_sched_priority = 0; | |
471 | c->cpu_sched_set = false; | |
472 | CPU_ZERO(&c->cpu_affinity); | |
473 | c->cpu_affinity_set = false; | |
071830ff | 474 | |
94f04347 | 475 | c->input = 0; |
071830ff LP |
476 | c->output = 0; |
477 | c->syslog_priority = LOG_DAEMON|LOG_INFO; | |
94f04347 LP |
478 | |
479 | c->secure_bits = 0; | |
480 | c->capability_bounding_set_drop = 0; | |
034c6ed7 LP |
481 | } |
482 | ||
483 | void exec_context_done(ExecContext *c) { | |
5cb5a6ff LP |
484 | unsigned l; |
485 | ||
486 | assert(c); | |
487 | ||
488 | strv_free(c->environment); | |
034c6ed7 | 489 | c->environment = NULL; |
5cb5a6ff | 490 | |
034c6ed7 | 491 | for (l = 0; l < ELEMENTSOF(c->rlimit); l++) { |
5cb5a6ff | 492 | free(c->rlimit[l]); |
034c6ed7 LP |
493 | c->rlimit[l] = NULL; |
494 | } | |
495 | ||
9eba9da4 LP |
496 | free(c->working_directory); |
497 | c->working_directory = NULL; | |
498 | free(c->root_directory); | |
499 | c->root_directory = NULL; | |
5cb5a6ff | 500 | |
071830ff LP |
501 | free(c->syslog_identifier); |
502 | c->syslog_identifier = NULL; | |
503 | ||
5cb5a6ff | 504 | free(c->user); |
034c6ed7 LP |
505 | c->user = NULL; |
506 | ||
5cb5a6ff | 507 | free(c->group); |
034c6ed7 LP |
508 | c->group = NULL; |
509 | ||
510 | strv_free(c->supplementary_groups); | |
511 | c->supplementary_groups = NULL; | |
94f04347 LP |
512 | |
513 | if (c->capabilities) { | |
514 | cap_free(c->capabilities); | |
515 | c->capabilities = NULL; | |
516 | } | |
5cb5a6ff LP |
517 | } |
518 | ||
519 | void exec_command_free_list(ExecCommand *c) { | |
520 | ExecCommand *i; | |
521 | ||
522 | while ((i = c)) { | |
034c6ed7 | 523 | LIST_REMOVE(ExecCommand, command, c, i); |
5cb5a6ff LP |
524 | |
525 | free(i->path); | |
44d8db9e | 526 | strv_free(i->argv); |
5cb5a6ff LP |
527 | free(i); |
528 | } | |
529 | } | |
530 | ||
034c6ed7 LP |
531 | void exec_command_free_array(ExecCommand **c, unsigned n) { |
532 | unsigned i; | |
533 | ||
534 | for (i = 0; i < n; i++) { | |
535 | exec_command_free_list(c[i]); | |
536 | c[i] = NULL; | |
537 | } | |
538 | } | |
539 | ||
5cb5a6ff | 540 | void exec_context_dump(ExecContext *c, FILE* f, const char *prefix) { |
94f04347 LP |
541 | char ** e; |
542 | unsigned i; | |
9eba9da4 | 543 | |
5cb5a6ff LP |
544 | assert(c); |
545 | assert(f); | |
546 | ||
547 | if (!prefix) | |
548 | prefix = ""; | |
549 | ||
550 | fprintf(f, | |
94f04347 LP |
551 | "%sUMask: %04o\n" |
552 | "%sWorkingDirectory: %s\n" | |
553 | "%sRootDirectory: %s\n", | |
5cb5a6ff | 554 | prefix, c->umask, |
9eba9da4 LP |
555 | prefix, c->working_directory ? c->working_directory : "/", |
556 | prefix, c->root_directory ? c->root_directory : "/"); | |
fb33a393 | 557 | |
94f04347 LP |
558 | if (c->environment) |
559 | for (e = c->environment; *e; e++) | |
560 | fprintf(f, "%sEnvironment: %s\n", prefix, *e); | |
561 | ||
fb33a393 LP |
562 | if (c->nice_set) |
563 | fprintf(f, | |
564 | "%sNice: %i\n", | |
565 | prefix, c->nice); | |
566 | ||
567 | if (c->oom_adjust_set) | |
568 | fprintf(f, | |
569 | "%sOOMAdjust: %i\n", | |
570 | prefix, c->oom_adjust); | |
9eba9da4 | 571 | |
94f04347 LP |
572 | for (i = 0; i < RLIM_NLIMITS; i++) |
573 | if (c->rlimit[i]) | |
ea430986 | 574 | fprintf(f, "%s%s: %llu\n", prefix, rlimit_to_string(i), (unsigned long long) c->rlimit[i]->rlim_max); |
94f04347 | 575 | |
9eba9da4 LP |
576 | if (c->ioprio_set) |
577 | fprintf(f, | |
578 | "%sIOSchedulingClass: %s\n" | |
579 | "%sIOPriority: %i\n", | |
94f04347 | 580 | prefix, ioprio_class_to_string(IOPRIO_PRIO_CLASS(c->ioprio)), |
9eba9da4 | 581 | prefix, (int) IOPRIO_PRIO_DATA(c->ioprio)); |
94f04347 LP |
582 | |
583 | if (c->cpu_sched_set) | |
584 | fprintf(f, | |
585 | "%sCPUSchedulingPolicy: %s\n" | |
38b48754 LP |
586 | "%sCPUSchedulingPriority: %i\n" |
587 | "%sCPUSchedulingResetOnFork: %s\n", | |
94f04347 | 588 | prefix, sched_policy_to_string(c->cpu_sched_policy), |
38b48754 LP |
589 | prefix, c->cpu_sched_priority, |
590 | prefix, yes_no(c->cpu_sched_reset_on_fork)); | |
94f04347 LP |
591 | |
592 | if (c->cpu_affinity_set) { | |
593 | fprintf(f, "%sCPUAffinity:", prefix); | |
594 | for (i = 0; i < CPU_SETSIZE; i++) | |
595 | if (CPU_ISSET(i, &c->cpu_affinity)) | |
596 | fprintf(f, " %i", i); | |
597 | fputs("\n", f); | |
598 | } | |
599 | ||
600 | if (c->timer_slack_ns_set) | |
601 | fprintf(f, "%sTimerSlackNS: %lu\n", prefix, c->timer_slack_ns); | |
602 | ||
603 | fprintf(f, | |
604 | "%sInput: %s\n" | |
605 | "%sOutput: %s\n", | |
606 | prefix, exec_input_to_string(c->input), | |
607 | prefix, exec_output_to_string(c->output)); | |
608 | ||
609 | if (c->output == EXEC_OUTPUT_SYSLOG || c->output == EXEC_OUTPUT_KERNEL) | |
610 | fprintf(f, | |
611 | "%sSyslogFacility: %s\n" | |
612 | "%sSyslogLevel: %s\n", | |
613 | prefix, log_facility_to_string(LOG_FAC(c->syslog_priority)), | |
614 | prefix, log_level_to_string(LOG_PRI(c->syslog_priority))); | |
615 | ||
616 | if (c->capabilities) { | |
617 | char *t; | |
618 | if ((t = cap_to_text(c->capabilities, NULL))) { | |
619 | fprintf(f, "%sCapabilities: %s\n", | |
620 | prefix, t); | |
621 | cap_free(t); | |
622 | } | |
623 | } | |
624 | ||
625 | if (c->secure_bits) | |
626 | fprintf(f, "%sSecure Bits:%s%s%s%s%s%s\n", | |
627 | prefix, | |
628 | (c->secure_bits & SECURE_KEEP_CAPS) ? " keep-caps" : "", | |
629 | (c->secure_bits & SECURE_KEEP_CAPS_LOCKED) ? " keep-caps-locked" : "", | |
630 | (c->secure_bits & SECURE_NO_SETUID_FIXUP) ? " no-setuid-fixup" : "", | |
631 | (c->secure_bits & SECURE_NO_SETUID_FIXUP_LOCKED) ? " no-setuid-fixup-locked" : "", | |
632 | (c->secure_bits & SECURE_NOROOT) ? " noroot" : "", | |
633 | (c->secure_bits & SECURE_NOROOT_LOCKED) ? "noroot-locked" : ""); | |
634 | ||
635 | if (c->capability_bounding_set_drop) { | |
636 | fprintf(f, "%sCapabilityBoundingSetDrop:", prefix); | |
637 | ||
638 | for (i = 0; i <= CAP_LAST_CAP; i++) | |
639 | if (c->capability_bounding_set_drop & (1 << i)) { | |
640 | char *t; | |
641 | ||
642 | if ((t = cap_to_name(i))) { | |
643 | fprintf(f, " %s", t); | |
644 | free(t); | |
645 | } | |
646 | } | |
647 | ||
648 | fputs("\n", f); | |
649 | } | |
650 | ||
651 | if (c->user) | |
652 | fprintf(f, "%sUser: %s", prefix, c->user); | |
653 | if (c->group) | |
654 | fprintf(f, "%sGroup: %s", prefix, c->group); | |
655 | ||
656 | if (c->supplementary_groups) { | |
657 | char **g; | |
658 | ||
659 | fprintf(f, "%sSupplementaryGroups:", prefix); | |
660 | ||
661 | STRV_FOREACH(g, c->supplementary_groups) | |
662 | fprintf(f, " %s", *g); | |
663 | ||
664 | fputs("\n", f); | |
665 | } | |
5cb5a6ff LP |
666 | } |
667 | ||
034c6ed7 LP |
668 | void exec_status_fill(ExecStatus *s, pid_t pid, int code, int status) { |
669 | assert(s); | |
5cb5a6ff | 670 | |
034c6ed7 LP |
671 | s->pid = pid; |
672 | s->code = code; | |
673 | s->status = status; | |
674 | s->timestamp = now(CLOCK_REALTIME); | |
5cb5a6ff | 675 | } |
44d8db9e LP |
676 | |
677 | char *exec_command_line(ExecCommand *c) { | |
678 | size_t k; | |
679 | char *n, *p, **a; | |
680 | bool first = true; | |
681 | ||
682 | assert(c); | |
683 | assert(c->argv); | |
684 | ||
9164977d | 685 | k = 1; |
44d8db9e LP |
686 | STRV_FOREACH(a, c->argv) |
687 | k += strlen(*a)+3; | |
688 | ||
689 | if (!(n = new(char, k))) | |
690 | return NULL; | |
691 | ||
692 | p = n; | |
693 | STRV_FOREACH(a, c->argv) { | |
694 | ||
695 | if (!first) | |
696 | *(p++) = ' '; | |
697 | else | |
698 | first = false; | |
699 | ||
700 | if (strpbrk(*a, WHITESPACE)) { | |
701 | *(p++) = '\''; | |
702 | p = stpcpy(p, *a); | |
703 | *(p++) = '\''; | |
704 | } else | |
705 | p = stpcpy(p, *a); | |
706 | ||
707 | } | |
708 | ||
9164977d LP |
709 | *p = 0; |
710 | ||
44d8db9e LP |
711 | /* FIXME: this doesn't really handle arguments that have |
712 | * spaces and ticks in them */ | |
713 | ||
714 | return n; | |
715 | } | |
716 | ||
717 | void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) { | |
718 | char *cmd; | |
719 | ||
720 | assert(c); | |
721 | assert(f); | |
722 | ||
723 | if (!prefix) | |
724 | prefix = ""; | |
725 | ||
726 | cmd = exec_command_line(c); | |
727 | ||
728 | fprintf(f, | |
729 | "%sCommand Line: %s\n", | |
730 | prefix, cmd ? cmd : strerror(ENOMEM)); | |
731 | ||
732 | free(cmd); | |
733 | } | |
734 | ||
735 | void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix) { | |
736 | assert(f); | |
737 | ||
738 | if (!prefix) | |
739 | prefix = ""; | |
740 | ||
741 | LIST_FOREACH(command, c, c) | |
742 | exec_command_dump(c, f, prefix); | |
743 | } | |
94f04347 LP |
744 | |
745 | static const char* const exec_output_table[_EXEC_OUTPUT_MAX] = { | |
746 | [EXEC_OUTPUT_CONSOLE] = "console", | |
747 | [EXEC_OUTPUT_NULL] = "null", | |
748 | [EXEC_OUTPUT_SYSLOG] = "syslog", | |
749 | [EXEC_OUTPUT_KERNEL] = "kernel" | |
750 | }; | |
751 | ||
752 | DEFINE_STRING_TABLE_LOOKUP(exec_output, ExecOutput); | |
753 | ||
754 | static const char* const exec_input_table[_EXEC_INPUT_MAX] = { | |
755 | [EXEC_INPUT_NULL] = "null", | |
756 | [EXEC_INPUT_CONSOLE] = "console" | |
757 | }; | |
758 | ||
759 | DEFINE_STRING_TABLE_LOOKUP(exec_input, ExecInput); |