]>
Commit | Line | Data |
---|---|---|
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 | ||
cc13a98b LP |
22 | #pragma GCC diagnostic ignored "-Wattributes" |
23 | ||
5cb5a6ff | 24 | #include <assert.h> |
034c6ed7 LP |
25 | #include <dirent.h> |
26 | #include <errno.h> | |
27 | #include <fcntl.h> | |
28 | #include <unistd.h> | |
44d8db9e | 29 | #include <string.h> |
309bff19 | 30 | #include <signal.h> |
071830ff LP |
31 | #include <sys/socket.h> |
32 | #include <sys/un.h> | |
94f04347 | 33 | #include <sys/prctl.h> |
66ee3769 | 34 | #include <linux/sched.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 | ||
47a71eed LP |
135 | static int flags_fds(int fds[], unsigned n_fds) { |
136 | unsigned i; | |
137 | ||
138 | if (n_fds <= 0) | |
139 | return 0; | |
140 | ||
141 | assert(fds); | |
142 | ||
143 | /* Drops O_NONBLOCK and FD_CLOEXEC from the file flags */ | |
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 | ||
151 | /* Since we are at it, let's make sure that nobody | |
152 | * forgot setting O_NONBLOCK for all our fds */ | |
153 | ||
154 | if (fcntl(fds[i], F_SETFL, flags &~O_NONBLOCK) < 0) | |
155 | return -errno; | |
156 | ||
157 | if ((flags = fcntl(fds[i], F_GETFD, 0)) < 0) | |
158 | return -errno; | |
159 | ||
160 | /* Also make sure nobody forgot O_CLOEXEC for all our | |
161 | * fds */ | |
162 | if (fcntl(fds[i], F_SETFD, flags &~FD_CLOEXEC) < 0) | |
163 | return -errno; | |
164 | } | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
071830ff LP |
169 | static int replace_null_fd(int fd, int flags) { |
170 | int nfd; | |
171 | assert(fd >= 0); | |
172 | ||
173 | close_nointr(fd); | |
174 | ||
175 | if ((nfd = open("/dev/null", flags|O_NOCTTY)) < 0) | |
176 | return -errno; | |
177 | ||
178 | if (nfd != fd) { | |
179 | close_nointr_nofail(nfd); | |
180 | return -EIO; | |
181 | } | |
182 | ||
183 | return 0; | |
184 | } | |
185 | ||
186 | static int setup_output(const ExecContext *context, const char *ident) { | |
187 | int r; | |
188 | ||
189 | assert(context); | |
190 | ||
191 | switch (context->output) { | |
192 | ||
94f04347 | 193 | case EXEC_OUTPUT_CONSOLE: |
071830ff LP |
194 | return 0; |
195 | ||
94f04347 | 196 | case EXEC_OUTPUT_NULL: |
071830ff | 197 | |
94f04347 | 198 | if ((r = replace_null_fd(STDOUT_FILENO, O_WRONLY)) < 0 || |
071830ff LP |
199 | (r = replace_null_fd(STDERR_FILENO, O_WRONLY)) < 0) |
200 | return r; | |
201 | ||
202 | return 0; | |
203 | ||
94f04347 LP |
204 | case EXEC_OUTPUT_KERNEL: |
205 | case EXEC_OUTPUT_SYSLOG: { | |
071830ff LP |
206 | |
207 | int fd; | |
208 | union { | |
209 | struct sockaddr sa; | |
210 | struct sockaddr_un un; | |
211 | } sa; | |
212 | ||
071830ff LP |
213 | close_nointr(STDOUT_FILENO); |
214 | close_nointr(STDERR_FILENO); | |
215 | ||
216 | if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) | |
217 | return -errno; | |
218 | ||
219 | if (fd != STDOUT_FILENO) { | |
220 | close_nointr_nofail(fd); | |
221 | return -EIO; | |
222 | } | |
223 | ||
224 | zero(sa); | |
225 | sa.sa.sa_family = AF_UNIX; | |
226 | strncpy(sa.un.sun_path+1, LOGGER_SOCKET, sizeof(sa.un.sun_path)-1); | |
227 | ||
228 | if (connect(fd, &sa.sa, sizeof(sa)) < 0) { | |
229 | close_nointr_nofail(fd); | |
230 | return -errno; | |
231 | } | |
232 | ||
233 | if (shutdown(fd, SHUT_RD) < 0) { | |
234 | close_nointr_nofail(fd); | |
235 | return -errno; | |
236 | } | |
237 | ||
238 | if ((fd = dup(fd)) < 0) { | |
239 | close_nointr_nofail(fd); | |
240 | return -errno; | |
241 | } | |
242 | ||
243 | if (fd != STDERR_FILENO) { | |
244 | close_nointr_nofail(fd); | |
245 | return -EIO; | |
246 | } | |
247 | ||
248 | /* We speak a very simple protocol between log server | |
249 | * and client: one line for the log destination (kmsg | |
250 | * or syslog), followed by the priority field, | |
251 | * followed by the process name. Since we replaced | |
252 | * stdin/stderr we simple use stdio to write to | |
253 | * it. Note that we use stderr, to minimize buffer | |
254 | * flushing issues. */ | |
255 | ||
256 | fprintf(stderr, | |
257 | "%s\n" | |
258 | "%i\n" | |
259 | "%s\n", | |
94f04347 | 260 | context->output == EXEC_OUTPUT_KERNEL ? "kmsg" : "syslog", |
071830ff LP |
261 | context->syslog_priority, |
262 | context->syslog_identifier ? context->syslog_identifier : ident); | |
263 | ||
264 | return 0; | |
265 | } | |
94f04347 LP |
266 | |
267 | default: | |
268 | assert_not_reached("Unknown output type"); | |
071830ff | 269 | } |
94f04347 LP |
270 | } |
271 | ||
47be870b | 272 | static int setup_input(const ExecContext *context) { |
94f04347 LP |
273 | int r; |
274 | ||
275 | assert(context); | |
071830ff | 276 | |
94f04347 LP |
277 | switch (context->input) { |
278 | ||
279 | case EXEC_INPUT_CONSOLE: | |
280 | return 0; | |
281 | ||
282 | case EXEC_INPUT_NULL: | |
283 | if ((r = replace_null_fd(STDIN_FILENO, O_RDONLY)) < 0) | |
284 | return r; | |
285 | ||
286 | return 0; | |
287 | ||
288 | default: | |
289 | assert_not_reached("Unknown input type"); | |
290 | } | |
071830ff LP |
291 | } |
292 | ||
034c6ed7 LP |
293 | int exec_spawn(const ExecCommand *command, const ExecContext *context, int *fds, unsigned n_fds, pid_t *ret) { |
294 | pid_t pid; | |
295 | ||
5cb5a6ff LP |
296 | assert(command); |
297 | assert(context); | |
298 | assert(ret); | |
034c6ed7 LP |
299 | assert(fds || n_fds <= 0); |
300 | ||
2da3263a | 301 | log_debug("about to execute %s", command->path); |
acbb0225 | 302 | |
034c6ed7 LP |
303 | if ((pid = fork()) < 0) |
304 | return -errno; | |
305 | ||
306 | if (pid == 0) { | |
307 | char **e, **f = NULL; | |
308 | int i, r; | |
309bff19 LP |
309 | sigset_t ss; |
310 | ||
034c6ed7 | 311 | /* child */ |
5cb5a6ff | 312 | |
309bff19 LP |
313 | if (sigemptyset(&ss) < 0 || |
314 | sigprocmask(SIG_SETMASK, &ss, NULL) < 0) { | |
315 | r = EXIT_SIGNAL_MASK; | |
316 | goto fail; | |
317 | } | |
318 | ||
9eba9da4 LP |
319 | if (setpgid(0, 0) < 0) { |
320 | r = EXIT_PGID; | |
034c6ed7 LP |
321 | goto fail; |
322 | } | |
323 | ||
9eba9da4 LP |
324 | umask(context->umask); |
325 | ||
94f04347 LP |
326 | if (setup_input(context) < 0) { |
327 | r = EXIT_INPUT; | |
328 | goto fail; | |
329 | } | |
330 | ||
071830ff LP |
331 | if (setup_output(context, file_name_from_path(command->path)) < 0) { |
332 | r = EXIT_OUTPUT; | |
333 | goto fail; | |
334 | } | |
335 | ||
fb33a393 LP |
336 | if (context->oom_adjust_set) { |
337 | char t[16]; | |
034c6ed7 | 338 | |
fb33a393 LP |
339 | snprintf(t, sizeof(t), "%i", context->oom_adjust); |
340 | char_array_0(t); | |
034c6ed7 | 341 | |
fb33a393 LP |
342 | if (write_one_line_file("/proc/self/oom_adj", t) < 0) { |
343 | r = EXIT_OOM_ADJUST; | |
344 | goto fail; | |
345 | } | |
034c6ed7 LP |
346 | } |
347 | ||
9eba9da4 LP |
348 | if (context->root_directory) |
349 | if (chroot(context->root_directory) < 0) { | |
350 | r = EXIT_CHROOT; | |
351 | goto fail; | |
352 | } | |
353 | ||
354 | if (chdir(context->working_directory ? context->working_directory : "/") < 0) { | |
355 | r = EXIT_CHDIR; | |
356 | goto fail; | |
357 | } | |
358 | ||
fb33a393 LP |
359 | if (context->nice_set) |
360 | if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) { | |
361 | r = EXIT_NICE; | |
362 | goto fail; | |
363 | } | |
364 | ||
94f04347 LP |
365 | if (context->cpu_sched_set) { |
366 | struct sched_param param; | |
367 | ||
368 | zero(param); | |
369 | param.sched_priority = context->cpu_sched_priority; | |
370 | ||
38b48754 LP |
371 | if (sched_setscheduler(0, context->cpu_sched_policy | |
372 | (context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), ¶m) < 0) { | |
94f04347 LP |
373 | r = EXIT_SETSCHEDULER; |
374 | goto fail; | |
375 | } | |
376 | } | |
377 | ||
378 | if (context->cpu_affinity_set) | |
379 | if (sched_setaffinity(0, sizeof(context->cpu_affinity), &context->cpu_affinity) < 0) { | |
380 | r = EXIT_CPUAFFINITY; | |
381 | goto fail; | |
382 | } | |
383 | ||
9eba9da4 LP |
384 | if (context->ioprio_set) |
385 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, context->ioprio) < 0) { | |
386 | r = EXIT_IOPRIO; | |
387 | goto fail; | |
388 | } | |
389 | ||
94f04347 LP |
390 | if (context->timer_slack_ns_set) |
391 | if (prctl(PR_SET_TIMERSLACK, context->timer_slack_ns_set) < 0) { | |
392 | r = EXIT_TIMERSLACK; | |
393 | goto fail; | |
394 | } | |
395 | ||
034c6ed7 | 396 | if (close_fds(fds, n_fds) < 0 || |
47a71eed LP |
397 | shift_fds(fds, n_fds) < 0 || |
398 | flags_fds(fds, n_fds) < 0) { | |
034c6ed7 LP |
399 | r = EXIT_FDS; |
400 | goto fail; | |
401 | } | |
402 | ||
403 | for (i = 0; i < RLIMIT_NLIMITS; i++) { | |
404 | if (!context->rlimit[i]) | |
405 | continue; | |
406 | ||
407 | if (setrlimit(i, context->rlimit[i]) < 0) { | |
408 | r = EXIT_LIMITS; | |
409 | goto fail; | |
410 | } | |
411 | } | |
412 | ||
94f04347 LP |
413 | if (context->secure_bits) { |
414 | if (prctl(PR_SET_SECUREBITS, context->secure_bits) < 0) { | |
415 | r = EXIT_SECUREBITS; | |
416 | goto fail; | |
417 | } | |
418 | } | |
419 | ||
034c6ed7 LP |
420 | if (n_fds > 0) { |
421 | char a[64], b[64]; | |
422 | char *listen_env[3] = { | |
423 | a, | |
424 | b, | |
425 | NULL | |
426 | }; | |
427 | ||
428 | snprintf(a, sizeof(a), "LISTEN_PID=%llu", (unsigned long long) getpid()); | |
429 | snprintf(b, sizeof(b), "LISTEN_FDS=%u", n_fds); | |
430 | ||
431 | a[sizeof(a)-1] = 0; | |
432 | b[sizeof(b)-1] = 0; | |
433 | ||
434 | if (context->environment) { | |
435 | if (!(f = strv_merge(listen_env, context->environment))) { | |
436 | r = EXIT_MEMORY; | |
437 | goto fail; | |
438 | } | |
439 | e = f; | |
440 | } else | |
441 | e = listen_env; | |
442 | ||
443 | } else | |
444 | e = context->environment; | |
445 | ||
446 | execve(command->path, command->argv, e); | |
447 | r = EXIT_EXEC; | |
448 | ||
449 | fail: | |
450 | strv_free(f); | |
451 | _exit(r); | |
452 | } | |
453 | ||
2da3263a LP |
454 | |
455 | log_debug("executed %s as %llu", command->path, (unsigned long long) pid); | |
456 | ||
034c6ed7 | 457 | *ret = pid; |
5cb5a6ff LP |
458 | return 0; |
459 | } | |
460 | ||
034c6ed7 LP |
461 | void exec_context_init(ExecContext *c) { |
462 | assert(c); | |
463 | ||
464 | c->umask = 0002; | |
034c6ed7 | 465 | c->oom_adjust = 0; |
9eba9da4 | 466 | c->oom_adjust_set = false; |
034c6ed7 | 467 | c->nice = 0; |
9eba9da4 LP |
468 | c->nice_set = false; |
469 | c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0); | |
470 | c->ioprio_set = false; | |
94f04347 LP |
471 | c->cpu_sched_policy = SCHED_OTHER; |
472 | c->cpu_sched_priority = 0; | |
473 | c->cpu_sched_set = false; | |
474 | CPU_ZERO(&c->cpu_affinity); | |
475 | c->cpu_affinity_set = false; | |
071830ff | 476 | |
94f04347 | 477 | c->input = 0; |
071830ff LP |
478 | c->output = 0; |
479 | c->syslog_priority = LOG_DAEMON|LOG_INFO; | |
94f04347 LP |
480 | |
481 | c->secure_bits = 0; | |
482 | c->capability_bounding_set_drop = 0; | |
034c6ed7 LP |
483 | } |
484 | ||
485 | void exec_context_done(ExecContext *c) { | |
5cb5a6ff LP |
486 | unsigned l; |
487 | ||
488 | assert(c); | |
489 | ||
490 | strv_free(c->environment); | |
034c6ed7 | 491 | c->environment = NULL; |
5cb5a6ff | 492 | |
034c6ed7 | 493 | for (l = 0; l < ELEMENTSOF(c->rlimit); l++) { |
5cb5a6ff | 494 | free(c->rlimit[l]); |
034c6ed7 LP |
495 | c->rlimit[l] = NULL; |
496 | } | |
497 | ||
9eba9da4 LP |
498 | free(c->working_directory); |
499 | c->working_directory = NULL; | |
500 | free(c->root_directory); | |
501 | c->root_directory = NULL; | |
5cb5a6ff | 502 | |
071830ff LP |
503 | free(c->syslog_identifier); |
504 | c->syslog_identifier = NULL; | |
505 | ||
5cb5a6ff | 506 | free(c->user); |
034c6ed7 LP |
507 | c->user = NULL; |
508 | ||
5cb5a6ff | 509 | free(c->group); |
034c6ed7 LP |
510 | c->group = NULL; |
511 | ||
512 | strv_free(c->supplementary_groups); | |
513 | c->supplementary_groups = NULL; | |
94f04347 LP |
514 | |
515 | if (c->capabilities) { | |
516 | cap_free(c->capabilities); | |
517 | c->capabilities = NULL; | |
518 | } | |
5cb5a6ff LP |
519 | } |
520 | ||
521 | void exec_command_free_list(ExecCommand *c) { | |
522 | ExecCommand *i; | |
523 | ||
524 | while ((i = c)) { | |
034c6ed7 | 525 | LIST_REMOVE(ExecCommand, command, c, i); |
5cb5a6ff LP |
526 | |
527 | free(i->path); | |
44d8db9e | 528 | strv_free(i->argv); |
5cb5a6ff LP |
529 | free(i); |
530 | } | |
531 | } | |
532 | ||
034c6ed7 LP |
533 | void exec_command_free_array(ExecCommand **c, unsigned n) { |
534 | unsigned i; | |
535 | ||
536 | for (i = 0; i < n; i++) { | |
537 | exec_command_free_list(c[i]); | |
538 | c[i] = NULL; | |
539 | } | |
540 | } | |
541 | ||
5cb5a6ff | 542 | void exec_context_dump(ExecContext *c, FILE* f, const char *prefix) { |
94f04347 LP |
543 | char ** e; |
544 | unsigned i; | |
9eba9da4 | 545 | |
5cb5a6ff LP |
546 | assert(c); |
547 | assert(f); | |
548 | ||
549 | if (!prefix) | |
550 | prefix = ""; | |
551 | ||
552 | fprintf(f, | |
94f04347 LP |
553 | "%sUMask: %04o\n" |
554 | "%sWorkingDirectory: %s\n" | |
555 | "%sRootDirectory: %s\n", | |
5cb5a6ff | 556 | prefix, c->umask, |
9eba9da4 LP |
557 | prefix, c->working_directory ? c->working_directory : "/", |
558 | prefix, c->root_directory ? c->root_directory : "/"); | |
fb33a393 | 559 | |
94f04347 LP |
560 | if (c->environment) |
561 | for (e = c->environment; *e; e++) | |
562 | fprintf(f, "%sEnvironment: %s\n", prefix, *e); | |
563 | ||
fb33a393 LP |
564 | if (c->nice_set) |
565 | fprintf(f, | |
566 | "%sNice: %i\n", | |
567 | prefix, c->nice); | |
568 | ||
569 | if (c->oom_adjust_set) | |
570 | fprintf(f, | |
571 | "%sOOMAdjust: %i\n", | |
572 | prefix, c->oom_adjust); | |
9eba9da4 | 573 | |
94f04347 LP |
574 | for (i = 0; i < RLIM_NLIMITS; i++) |
575 | if (c->rlimit[i]) | |
ea430986 | 576 | fprintf(f, "%s%s: %llu\n", prefix, rlimit_to_string(i), (unsigned long long) c->rlimit[i]->rlim_max); |
94f04347 | 577 | |
9eba9da4 LP |
578 | if (c->ioprio_set) |
579 | fprintf(f, | |
580 | "%sIOSchedulingClass: %s\n" | |
581 | "%sIOPriority: %i\n", | |
94f04347 | 582 | prefix, ioprio_class_to_string(IOPRIO_PRIO_CLASS(c->ioprio)), |
9eba9da4 | 583 | prefix, (int) IOPRIO_PRIO_DATA(c->ioprio)); |
94f04347 LP |
584 | |
585 | if (c->cpu_sched_set) | |
586 | fprintf(f, | |
587 | "%sCPUSchedulingPolicy: %s\n" | |
38b48754 LP |
588 | "%sCPUSchedulingPriority: %i\n" |
589 | "%sCPUSchedulingResetOnFork: %s\n", | |
94f04347 | 590 | prefix, sched_policy_to_string(c->cpu_sched_policy), |
38b48754 LP |
591 | prefix, c->cpu_sched_priority, |
592 | prefix, yes_no(c->cpu_sched_reset_on_fork)); | |
94f04347 LP |
593 | |
594 | if (c->cpu_affinity_set) { | |
595 | fprintf(f, "%sCPUAffinity:", prefix); | |
596 | for (i = 0; i < CPU_SETSIZE; i++) | |
597 | if (CPU_ISSET(i, &c->cpu_affinity)) | |
598 | fprintf(f, " %i", i); | |
599 | fputs("\n", f); | |
600 | } | |
601 | ||
602 | if (c->timer_slack_ns_set) | |
603 | fprintf(f, "%sTimerSlackNS: %lu\n", prefix, c->timer_slack_ns); | |
604 | ||
605 | fprintf(f, | |
606 | "%sInput: %s\n" | |
607 | "%sOutput: %s\n", | |
608 | prefix, exec_input_to_string(c->input), | |
609 | prefix, exec_output_to_string(c->output)); | |
610 | ||
611 | if (c->output == EXEC_OUTPUT_SYSLOG || c->output == EXEC_OUTPUT_KERNEL) | |
612 | fprintf(f, | |
613 | "%sSyslogFacility: %s\n" | |
614 | "%sSyslogLevel: %s\n", | |
615 | prefix, log_facility_to_string(LOG_FAC(c->syslog_priority)), | |
616 | prefix, log_level_to_string(LOG_PRI(c->syslog_priority))); | |
617 | ||
618 | if (c->capabilities) { | |
619 | char *t; | |
620 | if ((t = cap_to_text(c->capabilities, NULL))) { | |
621 | fprintf(f, "%sCapabilities: %s\n", | |
622 | prefix, t); | |
623 | cap_free(t); | |
624 | } | |
625 | } | |
626 | ||
627 | if (c->secure_bits) | |
628 | fprintf(f, "%sSecure Bits:%s%s%s%s%s%s\n", | |
629 | prefix, | |
630 | (c->secure_bits & SECURE_KEEP_CAPS) ? " keep-caps" : "", | |
631 | (c->secure_bits & SECURE_KEEP_CAPS_LOCKED) ? " keep-caps-locked" : "", | |
632 | (c->secure_bits & SECURE_NO_SETUID_FIXUP) ? " no-setuid-fixup" : "", | |
633 | (c->secure_bits & SECURE_NO_SETUID_FIXUP_LOCKED) ? " no-setuid-fixup-locked" : "", | |
634 | (c->secure_bits & SECURE_NOROOT) ? " noroot" : "", | |
635 | (c->secure_bits & SECURE_NOROOT_LOCKED) ? "noroot-locked" : ""); | |
636 | ||
637 | if (c->capability_bounding_set_drop) { | |
638 | fprintf(f, "%sCapabilityBoundingSetDrop:", prefix); | |
639 | ||
640 | for (i = 0; i <= CAP_LAST_CAP; i++) | |
641 | if (c->capability_bounding_set_drop & (1 << i)) { | |
642 | char *t; | |
643 | ||
644 | if ((t = cap_to_name(i))) { | |
645 | fprintf(f, " %s", t); | |
646 | free(t); | |
647 | } | |
648 | } | |
649 | ||
650 | fputs("\n", f); | |
651 | } | |
652 | ||
653 | if (c->user) | |
654 | fprintf(f, "%sUser: %s", prefix, c->user); | |
655 | if (c->group) | |
656 | fprintf(f, "%sGroup: %s", prefix, c->group); | |
657 | ||
658 | if (c->supplementary_groups) { | |
659 | char **g; | |
660 | ||
661 | fprintf(f, "%sSupplementaryGroups:", prefix); | |
662 | ||
663 | STRV_FOREACH(g, c->supplementary_groups) | |
664 | fprintf(f, " %s", *g); | |
665 | ||
666 | fputs("\n", f); | |
667 | } | |
5cb5a6ff LP |
668 | } |
669 | ||
034c6ed7 LP |
670 | void exec_status_fill(ExecStatus *s, pid_t pid, int code, int status) { |
671 | assert(s); | |
5cb5a6ff | 672 | |
034c6ed7 LP |
673 | s->pid = pid; |
674 | s->code = code; | |
675 | s->status = status; | |
676 | s->timestamp = now(CLOCK_REALTIME); | |
5cb5a6ff | 677 | } |
44d8db9e LP |
678 | |
679 | char *exec_command_line(ExecCommand *c) { | |
680 | size_t k; | |
681 | char *n, *p, **a; | |
682 | bool first = true; | |
683 | ||
684 | assert(c); | |
685 | assert(c->argv); | |
686 | ||
9164977d | 687 | k = 1; |
44d8db9e LP |
688 | STRV_FOREACH(a, c->argv) |
689 | k += strlen(*a)+3; | |
690 | ||
691 | if (!(n = new(char, k))) | |
692 | return NULL; | |
693 | ||
694 | p = n; | |
695 | STRV_FOREACH(a, c->argv) { | |
696 | ||
697 | if (!first) | |
698 | *(p++) = ' '; | |
699 | else | |
700 | first = false; | |
701 | ||
702 | if (strpbrk(*a, WHITESPACE)) { | |
703 | *(p++) = '\''; | |
704 | p = stpcpy(p, *a); | |
705 | *(p++) = '\''; | |
706 | } else | |
707 | p = stpcpy(p, *a); | |
708 | ||
709 | } | |
710 | ||
9164977d LP |
711 | *p = 0; |
712 | ||
44d8db9e LP |
713 | /* FIXME: this doesn't really handle arguments that have |
714 | * spaces and ticks in them */ | |
715 | ||
716 | return n; | |
717 | } | |
718 | ||
719 | void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) { | |
720 | char *cmd; | |
721 | ||
722 | assert(c); | |
723 | assert(f); | |
724 | ||
725 | if (!prefix) | |
726 | prefix = ""; | |
727 | ||
728 | cmd = exec_command_line(c); | |
729 | ||
730 | fprintf(f, | |
731 | "%sCommand Line: %s\n", | |
732 | prefix, cmd ? cmd : strerror(ENOMEM)); | |
733 | ||
734 | free(cmd); | |
735 | } | |
736 | ||
737 | void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix) { | |
738 | assert(f); | |
739 | ||
740 | if (!prefix) | |
741 | prefix = ""; | |
742 | ||
743 | LIST_FOREACH(command, c, c) | |
744 | exec_command_dump(c, f, prefix); | |
745 | } | |
94f04347 LP |
746 | |
747 | static const char* const exec_output_table[_EXEC_OUTPUT_MAX] = { | |
748 | [EXEC_OUTPUT_CONSOLE] = "console", | |
749 | [EXEC_OUTPUT_NULL] = "null", | |
750 | [EXEC_OUTPUT_SYSLOG] = "syslog", | |
751 | [EXEC_OUTPUT_KERNEL] = "kernel" | |
752 | }; | |
753 | ||
754 | DEFINE_STRING_TABLE_LOOKUP(exec_output, ExecOutput); | |
755 | ||
756 | static const char* const exec_input_table[_EXEC_INPUT_MAX] = { | |
757 | [EXEC_INPUT_NULL] = "null", | |
758 | [EXEC_INPUT_CONSOLE] = "console" | |
759 | }; | |
760 | ||
761 | DEFINE_STRING_TABLE_LOOKUP(exec_input, ExecInput); |