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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> |
451a074f LP |
33 | #include <sys/types.h> |
34 | #include <sys/stat.h> | |
5cb5a6ff LP |
35 | |
36 | #include "execute.h" | |
37 | #include "strv.h" | |
38 | #include "macro.h" | |
39 | #include "util.h" | |
acbb0225 | 40 | #include "log.h" |
9eba9da4 | 41 | #include "ioprio.h" |
94f04347 | 42 | #include "securebits.h" |
5cb5a6ff | 43 | |
034c6ed7 LP |
44 | static int close_fds(int except[], unsigned n_except) { |
45 | DIR *d; | |
46 | struct dirent *de; | |
47 | int r = 0; | |
48 | ||
49 | /* Modifies the fds array! (sorts it) */ | |
50 | ||
51 | if (!(d = opendir("/proc/self/fd"))) | |
52 | return -errno; | |
53 | ||
54 | while ((de = readdir(d))) { | |
55 | int fd; | |
56 | ||
57 | if (de->d_name[0] == '.') | |
58 | continue; | |
59 | ||
60 | if ((r = safe_atoi(de->d_name, &fd)) < 0) | |
61 | goto finish; | |
62 | ||
63 | if (fd < 3) | |
64 | continue; | |
65 | ||
66 | if (fd == dirfd(d)) | |
67 | continue; | |
68 | ||
69 | if (except) { | |
70 | bool found; | |
71 | unsigned i; | |
72 | ||
73 | found = false; | |
74 | for (i = 0; i < n_except; i++) | |
75 | if (except[i] == fd) { | |
76 | found = true; | |
77 | break; | |
78 | } | |
79 | ||
80 | if (found) | |
81 | continue; | |
82 | } | |
83 | ||
84 | if ((r = close_nointr(fd)) < 0) | |
85 | goto finish; | |
86 | } | |
87 | ||
88 | finish: | |
89 | closedir(d); | |
90 | return r; | |
91 | } | |
92 | ||
93 | static int shift_fds(int fds[], unsigned n_fds) { | |
94 | int start, restart_from; | |
95 | ||
96 | if (n_fds <= 0) | |
97 | return 0; | |
98 | ||
99 | assert(fds); | |
100 | ||
101 | start = 0; | |
102 | for (;;) { | |
103 | int i; | |
104 | ||
105 | restart_from = -1; | |
106 | ||
107 | for (i = start; i < (int) n_fds; i++) { | |
108 | int nfd; | |
109 | ||
110 | /* Already at right index? */ | |
111 | if (fds[i] == i+3) | |
112 | continue; | |
113 | ||
114 | if ((nfd = fcntl(fds[i], F_DUPFD, i+3)) < 0) | |
115 | return -errno; | |
116 | ||
2da3263a | 117 | assert_se(close_nointr(fds[i]) == 0); |
034c6ed7 LP |
118 | fds[i] = nfd; |
119 | ||
120 | /* Hmm, the fd we wanted isn't free? Then | |
121 | * let's remember that and try again from here*/ | |
122 | if (nfd != i+3 && restart_from < 0) | |
123 | restart_from = i; | |
124 | } | |
125 | ||
126 | if (restart_from < 0) | |
127 | break; | |
128 | ||
129 | start = restart_from; | |
130 | } | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
451a074f | 135 | static int flags_fds(int fds[], unsigned n_fds, bool nonblock) { |
47a71eed LP |
136 | unsigned i; |
137 | ||
138 | if (n_fds <= 0) | |
139 | return 0; | |
140 | ||
141 | assert(fds); | |
142 | ||
451a074f | 143 | /* Drops/Sets O_NONBLOCK and FD_CLOEXEC from the file flags */ |
47a71eed LP |
144 | |
145 | for (i = 0; i < n_fds; i++) { | |
146 | int flags; | |
147 | ||
148 | if ((flags = fcntl(fds[i], F_GETFL, 0)) < 0) | |
149 | return -errno; | |
150 | ||
451a074f LP |
151 | if (nonblock) |
152 | flags |= O_NONBLOCK; | |
153 | else | |
154 | flags &= ~O_NONBLOCK; | |
47a71eed | 155 | |
451a074f | 156 | if (fcntl(fds[i], F_SETFL, flags) < 0) |
47a71eed LP |
157 | return -errno; |
158 | ||
451a074f LP |
159 | /* We unconditionally drop FD_CLOEXEC from the fds, |
160 | * since after all we want to pass these fds to our | |
161 | * children */ | |
47a71eed LP |
162 | if ((flags = fcntl(fds[i], F_GETFD, 0)) < 0) |
163 | return -errno; | |
164 | ||
47a71eed LP |
165 | if (fcntl(fds[i], F_SETFD, flags &~FD_CLOEXEC) < 0) |
166 | return -errno; | |
167 | } | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
071830ff LP |
172 | static int replace_null_fd(int fd, int flags) { |
173 | int nfd; | |
174 | assert(fd >= 0); | |
175 | ||
176 | close_nointr(fd); | |
177 | ||
178 | if ((nfd = open("/dev/null", flags|O_NOCTTY)) < 0) | |
179 | return -errno; | |
180 | ||
181 | if (nfd != fd) { | |
182 | close_nointr_nofail(nfd); | |
183 | return -EIO; | |
184 | } | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | static int setup_output(const ExecContext *context, const char *ident) { | |
190 | int r; | |
191 | ||
192 | assert(context); | |
193 | ||
194 | switch (context->output) { | |
195 | ||
94f04347 | 196 | case EXEC_OUTPUT_CONSOLE: |
071830ff LP |
197 | return 0; |
198 | ||
94f04347 | 199 | case EXEC_OUTPUT_NULL: |
071830ff | 200 | |
94f04347 | 201 | if ((r = replace_null_fd(STDOUT_FILENO, O_WRONLY)) < 0 || |
071830ff LP |
202 | (r = replace_null_fd(STDERR_FILENO, O_WRONLY)) < 0) |
203 | return r; | |
204 | ||
205 | return 0; | |
206 | ||
94f04347 LP |
207 | case EXEC_OUTPUT_KERNEL: |
208 | case EXEC_OUTPUT_SYSLOG: { | |
071830ff LP |
209 | |
210 | int fd; | |
211 | union { | |
212 | struct sockaddr sa; | |
213 | struct sockaddr_un un; | |
214 | } sa; | |
215 | ||
071830ff LP |
216 | close_nointr(STDOUT_FILENO); |
217 | close_nointr(STDERR_FILENO); | |
218 | ||
219 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) | |
220 | return -errno; | |
221 | ||
222 | if (fd != STDOUT_FILENO) { | |
223 | close_nointr_nofail(fd); | |
224 | return -EIO; | |
225 | } | |
226 | ||
227 | zero(sa); | |
228 | sa.sa.sa_family = AF_UNIX; | |
229 | strncpy(sa.un.sun_path+1, LOGGER_SOCKET, sizeof(sa.un.sun_path)-1); | |
230 | ||
231 | if (connect(fd, &sa.sa, sizeof(sa)) < 0) { | |
232 | close_nointr_nofail(fd); | |
233 | return -errno; | |
234 | } | |
235 | ||
236 | if (shutdown(fd, SHUT_RD) < 0) { | |
237 | close_nointr_nofail(fd); | |
238 | return -errno; | |
239 | } | |
240 | ||
241 | if ((fd = dup(fd)) < 0) { | |
242 | close_nointr_nofail(fd); | |
243 | return -errno; | |
244 | } | |
245 | ||
246 | if (fd != STDERR_FILENO) { | |
247 | close_nointr_nofail(fd); | |
248 | return -EIO; | |
249 | } | |
250 | ||
251 | /* We speak a very simple protocol between log server | |
252 | * and client: one line for the log destination (kmsg | |
253 | * or syslog), followed by the priority field, | |
254 | * followed by the process name. Since we replaced | |
255 | * stdin/stderr we simple use stdio to write to | |
256 | * it. Note that we use stderr, to minimize buffer | |
257 | * flushing issues. */ | |
258 | ||
259 | fprintf(stderr, | |
260 | "%s\n" | |
261 | "%i\n" | |
262 | "%s\n", | |
94f04347 | 263 | context->output == EXEC_OUTPUT_KERNEL ? "kmsg" : "syslog", |
071830ff LP |
264 | context->syslog_priority, |
265 | context->syslog_identifier ? context->syslog_identifier : ident); | |
266 | ||
267 | return 0; | |
268 | } | |
94f04347 LP |
269 | |
270 | default: | |
271 | assert_not_reached("Unknown output type"); | |
071830ff | 272 | } |
94f04347 LP |
273 | } |
274 | ||
47be870b | 275 | static int setup_input(const ExecContext *context) { |
94f04347 LP |
276 | int r; |
277 | ||
278 | assert(context); | |
071830ff | 279 | |
94f04347 LP |
280 | switch (context->input) { |
281 | ||
282 | case EXEC_INPUT_CONSOLE: | |
283 | return 0; | |
284 | ||
285 | case EXEC_INPUT_NULL: | |
286 | if ((r = replace_null_fd(STDIN_FILENO, O_RDONLY)) < 0) | |
287 | return r; | |
288 | ||
289 | return 0; | |
290 | ||
291 | default: | |
292 | assert_not_reached("Unknown input type"); | |
293 | } | |
071830ff LP |
294 | } |
295 | ||
034c6ed7 LP |
296 | int exec_spawn(const ExecCommand *command, const ExecContext *context, int *fds, unsigned n_fds, pid_t *ret) { |
297 | pid_t pid; | |
298 | ||
5cb5a6ff LP |
299 | assert(command); |
300 | assert(context); | |
301 | assert(ret); | |
034c6ed7 LP |
302 | assert(fds || n_fds <= 0); |
303 | ||
2da3263a | 304 | log_debug("about to execute %s", command->path); |
acbb0225 | 305 | |
034c6ed7 LP |
306 | if ((pid = fork()) < 0) |
307 | return -errno; | |
308 | ||
309 | if (pid == 0) { | |
310 | char **e, **f = NULL; | |
311 | int i, r; | |
309bff19 LP |
312 | sigset_t ss; |
313 | ||
034c6ed7 | 314 | /* child */ |
5cb5a6ff | 315 | |
309bff19 LP |
316 | if (sigemptyset(&ss) < 0 || |
317 | sigprocmask(SIG_SETMASK, &ss, NULL) < 0) { | |
318 | r = EXIT_SIGNAL_MASK; | |
319 | goto fail; | |
320 | } | |
321 | ||
9eba9da4 LP |
322 | if (setpgid(0, 0) < 0) { |
323 | r = EXIT_PGID; | |
034c6ed7 LP |
324 | goto fail; |
325 | } | |
326 | ||
9eba9da4 LP |
327 | umask(context->umask); |
328 | ||
94f04347 LP |
329 | if (setup_input(context) < 0) { |
330 | r = EXIT_INPUT; | |
331 | goto fail; | |
332 | } | |
333 | ||
071830ff LP |
334 | if (setup_output(context, file_name_from_path(command->path)) < 0) { |
335 | r = EXIT_OUTPUT; | |
336 | goto fail; | |
337 | } | |
338 | ||
fb33a393 LP |
339 | if (context->oom_adjust_set) { |
340 | char t[16]; | |
034c6ed7 | 341 | |
fb33a393 LP |
342 | snprintf(t, sizeof(t), "%i", context->oom_adjust); |
343 | char_array_0(t); | |
034c6ed7 | 344 | |
fb33a393 LP |
345 | if (write_one_line_file("/proc/self/oom_adj", t) < 0) { |
346 | r = EXIT_OOM_ADJUST; | |
347 | goto fail; | |
348 | } | |
034c6ed7 LP |
349 | } |
350 | ||
9eba9da4 LP |
351 | if (context->root_directory) |
352 | if (chroot(context->root_directory) < 0) { | |
353 | r = EXIT_CHROOT; | |
354 | goto fail; | |
355 | } | |
356 | ||
357 | if (chdir(context->working_directory ? context->working_directory : "/") < 0) { | |
358 | r = EXIT_CHDIR; | |
359 | goto fail; | |
360 | } | |
361 | ||
fb33a393 LP |
362 | if (context->nice_set) |
363 | if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) { | |
364 | r = EXIT_NICE; | |
365 | goto fail; | |
366 | } | |
367 | ||
94f04347 LP |
368 | if (context->cpu_sched_set) { |
369 | struct sched_param param; | |
370 | ||
371 | zero(param); | |
372 | param.sched_priority = context->cpu_sched_priority; | |
373 | ||
38b48754 LP |
374 | if (sched_setscheduler(0, context->cpu_sched_policy | |
375 | (context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), ¶m) < 0) { | |
94f04347 LP |
376 | r = EXIT_SETSCHEDULER; |
377 | goto fail; | |
378 | } | |
379 | } | |
380 | ||
381 | if (context->cpu_affinity_set) | |
382 | if (sched_setaffinity(0, sizeof(context->cpu_affinity), &context->cpu_affinity) < 0) { | |
383 | r = EXIT_CPUAFFINITY; | |
384 | goto fail; | |
385 | } | |
386 | ||
9eba9da4 LP |
387 | if (context->ioprio_set) |
388 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, context->ioprio) < 0) { | |
389 | r = EXIT_IOPRIO; | |
390 | goto fail; | |
391 | } | |
392 | ||
94f04347 LP |
393 | if (context->timer_slack_ns_set) |
394 | if (prctl(PR_SET_TIMERSLACK, context->timer_slack_ns_set) < 0) { | |
395 | r = EXIT_TIMERSLACK; | |
396 | goto fail; | |
397 | } | |
398 | ||
034c6ed7 | 399 | if (close_fds(fds, n_fds) < 0 || |
47a71eed | 400 | shift_fds(fds, n_fds) < 0 || |
451a074f | 401 | flags_fds(fds, n_fds, context->non_blocking) < 0) { |
034c6ed7 LP |
402 | r = EXIT_FDS; |
403 | goto fail; | |
404 | } | |
405 | ||
406 | for (i = 0; i < RLIMIT_NLIMITS; i++) { | |
407 | if (!context->rlimit[i]) | |
408 | continue; | |
409 | ||
410 | if (setrlimit(i, context->rlimit[i]) < 0) { | |
411 | r = EXIT_LIMITS; | |
412 | goto fail; | |
413 | } | |
414 | } | |
415 | ||
94f04347 LP |
416 | if (context->secure_bits) { |
417 | if (prctl(PR_SET_SECUREBITS, context->secure_bits) < 0) { | |
418 | r = EXIT_SECUREBITS; | |
419 | goto fail; | |
420 | } | |
421 | } | |
422 | ||
034c6ed7 LP |
423 | if (n_fds > 0) { |
424 | char a[64], b[64]; | |
425 | char *listen_env[3] = { | |
426 | a, | |
427 | b, | |
428 | NULL | |
429 | }; | |
430 | ||
431 | snprintf(a, sizeof(a), "LISTEN_PID=%llu", (unsigned long long) getpid()); | |
432 | snprintf(b, sizeof(b), "LISTEN_FDS=%u", n_fds); | |
433 | ||
434 | a[sizeof(a)-1] = 0; | |
435 | b[sizeof(b)-1] = 0; | |
436 | ||
437 | if (context->environment) { | |
438 | if (!(f = strv_merge(listen_env, context->environment))) { | |
439 | r = EXIT_MEMORY; | |
440 | goto fail; | |
441 | } | |
442 | e = f; | |
443 | } else | |
444 | e = listen_env; | |
445 | ||
446 | } else | |
447 | e = context->environment; | |
448 | ||
449 | execve(command->path, command->argv, e); | |
450 | r = EXIT_EXEC; | |
451 | ||
452 | fail: | |
453 | strv_free(f); | |
454 | _exit(r); | |
455 | } | |
456 | ||
2da3263a LP |
457 | |
458 | log_debug("executed %s as %llu", command->path, (unsigned long long) pid); | |
459 | ||
034c6ed7 | 460 | *ret = pid; |
5cb5a6ff LP |
461 | return 0; |
462 | } | |
463 | ||
034c6ed7 LP |
464 | void exec_context_init(ExecContext *c) { |
465 | assert(c); | |
466 | ||
467 | c->umask = 0002; | |
034c6ed7 | 468 | c->oom_adjust = 0; |
9eba9da4 | 469 | c->oom_adjust_set = false; |
034c6ed7 | 470 | c->nice = 0; |
9eba9da4 LP |
471 | c->nice_set = false; |
472 | c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0); | |
473 | c->ioprio_set = false; | |
94f04347 LP |
474 | c->cpu_sched_policy = SCHED_OTHER; |
475 | c->cpu_sched_priority = 0; | |
476 | c->cpu_sched_set = false; | |
477 | CPU_ZERO(&c->cpu_affinity); | |
478 | c->cpu_affinity_set = false; | |
071830ff | 479 | |
94f04347 | 480 | c->input = 0; |
071830ff LP |
481 | c->output = 0; |
482 | c->syslog_priority = LOG_DAEMON|LOG_INFO; | |
94f04347 LP |
483 | |
484 | c->secure_bits = 0; | |
485 | c->capability_bounding_set_drop = 0; | |
034c6ed7 LP |
486 | } |
487 | ||
488 | void exec_context_done(ExecContext *c) { | |
5cb5a6ff LP |
489 | unsigned l; |
490 | ||
491 | assert(c); | |
492 | ||
493 | strv_free(c->environment); | |
034c6ed7 | 494 | c->environment = NULL; |
5cb5a6ff | 495 | |
034c6ed7 | 496 | for (l = 0; l < ELEMENTSOF(c->rlimit); l++) { |
5cb5a6ff | 497 | free(c->rlimit[l]); |
034c6ed7 LP |
498 | c->rlimit[l] = NULL; |
499 | } | |
500 | ||
9eba9da4 LP |
501 | free(c->working_directory); |
502 | c->working_directory = NULL; | |
503 | free(c->root_directory); | |
504 | c->root_directory = NULL; | |
5cb5a6ff | 505 | |
071830ff LP |
506 | free(c->syslog_identifier); |
507 | c->syslog_identifier = NULL; | |
508 | ||
5cb5a6ff | 509 | free(c->user); |
034c6ed7 LP |
510 | c->user = NULL; |
511 | ||
5cb5a6ff | 512 | free(c->group); |
034c6ed7 LP |
513 | c->group = NULL; |
514 | ||
515 | strv_free(c->supplementary_groups); | |
516 | c->supplementary_groups = NULL; | |
94f04347 LP |
517 | |
518 | if (c->capabilities) { | |
519 | cap_free(c->capabilities); | |
520 | c->capabilities = NULL; | |
521 | } | |
5cb5a6ff LP |
522 | } |
523 | ||
524 | void exec_command_free_list(ExecCommand *c) { | |
525 | ExecCommand *i; | |
526 | ||
527 | while ((i = c)) { | |
034c6ed7 | 528 | LIST_REMOVE(ExecCommand, command, c, i); |
5cb5a6ff LP |
529 | |
530 | free(i->path); | |
44d8db9e | 531 | strv_free(i->argv); |
5cb5a6ff LP |
532 | free(i); |
533 | } | |
534 | } | |
535 | ||
034c6ed7 LP |
536 | void exec_command_free_array(ExecCommand **c, unsigned n) { |
537 | unsigned i; | |
538 | ||
539 | for (i = 0; i < n; i++) { | |
540 | exec_command_free_list(c[i]); | |
541 | c[i] = NULL; | |
542 | } | |
543 | } | |
544 | ||
5cb5a6ff | 545 | void exec_context_dump(ExecContext *c, FILE* f, const char *prefix) { |
94f04347 LP |
546 | char ** e; |
547 | unsigned i; | |
9eba9da4 | 548 | |
5cb5a6ff LP |
549 | assert(c); |
550 | assert(f); | |
551 | ||
552 | if (!prefix) | |
553 | prefix = ""; | |
554 | ||
555 | fprintf(f, | |
94f04347 LP |
556 | "%sUMask: %04o\n" |
557 | "%sWorkingDirectory: %s\n" | |
451a074f LP |
558 | "%sRootDirectory: %s\n" |
559 | "%sNonBlocking: %s\n", | |
5cb5a6ff | 560 | prefix, c->umask, |
9eba9da4 | 561 | prefix, c->working_directory ? c->working_directory : "/", |
451a074f LP |
562 | prefix, c->root_directory ? c->root_directory : "/", |
563 | prefix, yes_no(c->non_blocking)); | |
fb33a393 | 564 | |
94f04347 LP |
565 | if (c->environment) |
566 | for (e = c->environment; *e; e++) | |
567 | fprintf(f, "%sEnvironment: %s\n", prefix, *e); | |
568 | ||
fb33a393 LP |
569 | if (c->nice_set) |
570 | fprintf(f, | |
571 | "%sNice: %i\n", | |
572 | prefix, c->nice); | |
573 | ||
574 | if (c->oom_adjust_set) | |
575 | fprintf(f, | |
576 | "%sOOMAdjust: %i\n", | |
577 | prefix, c->oom_adjust); | |
9eba9da4 | 578 | |
94f04347 LP |
579 | for (i = 0; i < RLIM_NLIMITS; i++) |
580 | if (c->rlimit[i]) | |
ea430986 | 581 | fprintf(f, "%s%s: %llu\n", prefix, rlimit_to_string(i), (unsigned long long) c->rlimit[i]->rlim_max); |
94f04347 | 582 | |
9eba9da4 LP |
583 | if (c->ioprio_set) |
584 | fprintf(f, | |
585 | "%sIOSchedulingClass: %s\n" | |
586 | "%sIOPriority: %i\n", | |
94f04347 | 587 | prefix, ioprio_class_to_string(IOPRIO_PRIO_CLASS(c->ioprio)), |
9eba9da4 | 588 | prefix, (int) IOPRIO_PRIO_DATA(c->ioprio)); |
94f04347 LP |
589 | |
590 | if (c->cpu_sched_set) | |
591 | fprintf(f, | |
592 | "%sCPUSchedulingPolicy: %s\n" | |
38b48754 LP |
593 | "%sCPUSchedulingPriority: %i\n" |
594 | "%sCPUSchedulingResetOnFork: %s\n", | |
94f04347 | 595 | prefix, sched_policy_to_string(c->cpu_sched_policy), |
38b48754 LP |
596 | prefix, c->cpu_sched_priority, |
597 | prefix, yes_no(c->cpu_sched_reset_on_fork)); | |
94f04347 LP |
598 | |
599 | if (c->cpu_affinity_set) { | |
600 | fprintf(f, "%sCPUAffinity:", prefix); | |
601 | for (i = 0; i < CPU_SETSIZE; i++) | |
602 | if (CPU_ISSET(i, &c->cpu_affinity)) | |
603 | fprintf(f, " %i", i); | |
604 | fputs("\n", f); | |
605 | } | |
606 | ||
607 | if (c->timer_slack_ns_set) | |
608 | fprintf(f, "%sTimerSlackNS: %lu\n", prefix, c->timer_slack_ns); | |
609 | ||
610 | fprintf(f, | |
611 | "%sInput: %s\n" | |
612 | "%sOutput: %s\n", | |
613 | prefix, exec_input_to_string(c->input), | |
614 | prefix, exec_output_to_string(c->output)); | |
615 | ||
616 | if (c->output == EXEC_OUTPUT_SYSLOG || c->output == EXEC_OUTPUT_KERNEL) | |
617 | fprintf(f, | |
618 | "%sSyslogFacility: %s\n" | |
619 | "%sSyslogLevel: %s\n", | |
620 | prefix, log_facility_to_string(LOG_FAC(c->syslog_priority)), | |
621 | prefix, log_level_to_string(LOG_PRI(c->syslog_priority))); | |
622 | ||
623 | if (c->capabilities) { | |
624 | char *t; | |
625 | if ((t = cap_to_text(c->capabilities, NULL))) { | |
626 | fprintf(f, "%sCapabilities: %s\n", | |
627 | prefix, t); | |
628 | cap_free(t); | |
629 | } | |
630 | } | |
631 | ||
632 | if (c->secure_bits) | |
633 | fprintf(f, "%sSecure Bits:%s%s%s%s%s%s\n", | |
634 | prefix, | |
635 | (c->secure_bits & SECURE_KEEP_CAPS) ? " keep-caps" : "", | |
636 | (c->secure_bits & SECURE_KEEP_CAPS_LOCKED) ? " keep-caps-locked" : "", | |
637 | (c->secure_bits & SECURE_NO_SETUID_FIXUP) ? " no-setuid-fixup" : "", | |
638 | (c->secure_bits & SECURE_NO_SETUID_FIXUP_LOCKED) ? " no-setuid-fixup-locked" : "", | |
639 | (c->secure_bits & SECURE_NOROOT) ? " noroot" : "", | |
640 | (c->secure_bits & SECURE_NOROOT_LOCKED) ? "noroot-locked" : ""); | |
641 | ||
642 | if (c->capability_bounding_set_drop) { | |
643 | fprintf(f, "%sCapabilityBoundingSetDrop:", prefix); | |
644 | ||
645 | for (i = 0; i <= CAP_LAST_CAP; i++) | |
646 | if (c->capability_bounding_set_drop & (1 << i)) { | |
647 | char *t; | |
648 | ||
649 | if ((t = cap_to_name(i))) { | |
650 | fprintf(f, " %s", t); | |
651 | free(t); | |
652 | } | |
653 | } | |
654 | ||
655 | fputs("\n", f); | |
656 | } | |
657 | ||
658 | if (c->user) | |
659 | fprintf(f, "%sUser: %s", prefix, c->user); | |
660 | if (c->group) | |
661 | fprintf(f, "%sGroup: %s", prefix, c->group); | |
662 | ||
663 | if (c->supplementary_groups) { | |
664 | char **g; | |
665 | ||
666 | fprintf(f, "%sSupplementaryGroups:", prefix); | |
667 | ||
668 | STRV_FOREACH(g, c->supplementary_groups) | |
669 | fprintf(f, " %s", *g); | |
670 | ||
671 | fputs("\n", f); | |
672 | } | |
5cb5a6ff LP |
673 | } |
674 | ||
034c6ed7 LP |
675 | void exec_status_fill(ExecStatus *s, pid_t pid, int code, int status) { |
676 | assert(s); | |
5cb5a6ff | 677 | |
034c6ed7 LP |
678 | s->pid = pid; |
679 | s->code = code; | |
680 | s->status = status; | |
681 | s->timestamp = now(CLOCK_REALTIME); | |
5cb5a6ff | 682 | } |
44d8db9e LP |
683 | |
684 | char *exec_command_line(ExecCommand *c) { | |
685 | size_t k; | |
686 | char *n, *p, **a; | |
687 | bool first = true; | |
688 | ||
689 | assert(c); | |
690 | assert(c->argv); | |
691 | ||
9164977d | 692 | k = 1; |
44d8db9e LP |
693 | STRV_FOREACH(a, c->argv) |
694 | k += strlen(*a)+3; | |
695 | ||
696 | if (!(n = new(char, k))) | |
697 | return NULL; | |
698 | ||
699 | p = n; | |
700 | STRV_FOREACH(a, c->argv) { | |
701 | ||
702 | if (!first) | |
703 | *(p++) = ' '; | |
704 | else | |
705 | first = false; | |
706 | ||
707 | if (strpbrk(*a, WHITESPACE)) { | |
708 | *(p++) = '\''; | |
709 | p = stpcpy(p, *a); | |
710 | *(p++) = '\''; | |
711 | } else | |
712 | p = stpcpy(p, *a); | |
713 | ||
714 | } | |
715 | ||
9164977d LP |
716 | *p = 0; |
717 | ||
44d8db9e LP |
718 | /* FIXME: this doesn't really handle arguments that have |
719 | * spaces and ticks in them */ | |
720 | ||
721 | return n; | |
722 | } | |
723 | ||
724 | void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) { | |
725 | char *cmd; | |
726 | ||
727 | assert(c); | |
728 | assert(f); | |
729 | ||
730 | if (!prefix) | |
731 | prefix = ""; | |
732 | ||
733 | cmd = exec_command_line(c); | |
734 | ||
735 | fprintf(f, | |
736 | "%sCommand Line: %s\n", | |
737 | prefix, cmd ? cmd : strerror(ENOMEM)); | |
738 | ||
739 | free(cmd); | |
740 | } | |
741 | ||
742 | void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix) { | |
743 | assert(f); | |
744 | ||
745 | if (!prefix) | |
746 | prefix = ""; | |
747 | ||
748 | LIST_FOREACH(command, c, c) | |
749 | exec_command_dump(c, f, prefix); | |
750 | } | |
94f04347 | 751 | |
a6a80b4f LP |
752 | void exec_command_append_list(ExecCommand **l, ExecCommand *e) { |
753 | ExecCommand *end; | |
754 | ||
755 | assert(l); | |
756 | assert(e); | |
757 | ||
758 | if (*l) { | |
759 | /* It's kinda important that we keep the order here */ | |
760 | LIST_FIND_TAIL(ExecCommand, command, *l, end); | |
761 | LIST_INSERT_AFTER(ExecCommand, command, *l, end, e); | |
762 | } else | |
763 | *l = e; | |
764 | } | |
765 | ||
94f04347 LP |
766 | static const char* const exec_output_table[_EXEC_OUTPUT_MAX] = { |
767 | [EXEC_OUTPUT_CONSOLE] = "console", | |
768 | [EXEC_OUTPUT_NULL] = "null", | |
769 | [EXEC_OUTPUT_SYSLOG] = "syslog", | |
770 | [EXEC_OUTPUT_KERNEL] = "kernel" | |
771 | }; | |
772 | ||
773 | DEFINE_STRING_TABLE_LOOKUP(exec_output, ExecOutput); | |
774 | ||
775 | static const char* const exec_input_table[_EXEC_INPUT_MAX] = { | |
776 | [EXEC_INPUT_NULL] = "null", | |
777 | [EXEC_INPUT_CONSOLE] = "console" | |
778 | }; | |
779 | ||
780 | DEFINE_STRING_TABLE_LOOKUP(exec_input, ExecInput); |