1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
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.
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.
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/>.
29 #include <sys/socket.h>
31 #include <sys/prctl.h>
32 #include <linux/sched.h>
33 #include <sys/types.h>
44 #include "securebits.h"
47 static int shift_fds(int fds[], unsigned n_fds) {
48 int start, restart_from;
53 /* Modifies the fds array! (sorts it) */
63 for (i = start; i < (int) n_fds; i++) {
66 /* Already at right index? */
70 if ((nfd = fcntl(fds[i], F_DUPFD, i+3)) < 0)
73 assert_se(close_nointr(fds[i]) == 0);
76 /* Hmm, the fd we wanted isn't free? Then
77 * let's remember that and try again from here*/
78 if (nfd != i+3 && restart_from < 0)
91 static int flags_fds(int fds[], unsigned n_fds, bool nonblock) {
100 /* Drops/Sets O_NONBLOCK and FD_CLOEXEC from the file flags */
102 for (i = 0; i < n_fds; i++) {
104 if ((r = fd_nonblock(fds[i], nonblock)) < 0)
107 /* We unconditionally drop FD_CLOEXEC from the fds,
108 * since after all we want to pass these fds to our
111 if ((r = fd_cloexec(fds[i], false)) < 0)
118 static const char *tty_path(const ExecContext *context) {
121 if (context->tty_path)
122 return context->tty_path;
124 return "/dev/console";
127 static int open_null_as(int flags, int nfd) {
132 if ((fd = open("/dev/null", flags|O_NOCTTY)) < 0)
136 r = dup2(fd, nfd) < 0 ? -errno : nfd;
144 static int connect_logger_as(const ExecContext *context, ExecOutput output, const char *ident, int nfd) {
148 struct sockaddr_un un;
152 assert(output < _EXEC_OUTPUT_MAX);
156 if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
160 sa.sa.sa_family = AF_UNIX;
161 strncpy(sa.un.sun_path+1, LOGGER_SOCKET, sizeof(sa.un.sun_path)-1);
163 if (connect(fd, &sa.sa, sizeof(sa)) < 0) {
164 close_nointr_nofail(fd);
168 if (shutdown(fd, SHUT_RD) < 0) {
169 close_nointr_nofail(fd);
173 /* We speak a very simple protocol between log server
174 * and client: one line for the log destination (kmsg
175 * or syslog), followed by the priority field,
176 * followed by the process name. Since we replaced
177 * stdin/stderr we simple use stdio to write to
178 * it. Note that we use stderr, to minimize buffer
179 * flushing issues. */
185 output == EXEC_OUTPUT_KERNEL ? "kmsg" : "syslog",
186 context->syslog_priority,
187 context->syslog_identifier ? context->syslog_identifier : ident);
190 r = dup2(fd, nfd) < 0 ? -errno : nfd;
197 static int open_terminal_as(const char *path, mode_t mode, int nfd) {
203 if ((fd = open_terminal(path, mode | O_NOCTTY)) < 0)
207 r = dup2(fd, nfd) < 0 ? -errno : nfd;
208 close_nointr_nofail(fd);
215 static bool is_terminal_input(ExecInput i) {
217 i == EXEC_INPUT_TTY ||
218 i == EXEC_INPUT_TTY_FORCE ||
219 i == EXEC_INPUT_TTY_FAIL;
222 static int setup_input(const ExecContext *context) {
225 switch (context->std_input) {
227 case EXEC_INPUT_NULL:
228 return open_null_as(O_RDONLY, STDIN_FILENO);
231 case EXEC_INPUT_TTY_FORCE:
232 case EXEC_INPUT_TTY_FAIL: {
235 if ((fd = acquire_terminal(
237 context->std_input == EXEC_INPUT_TTY_FAIL,
238 context->std_input == EXEC_INPUT_TTY_FORCE)) < 0)
241 if (fd != STDIN_FILENO) {
242 r = dup2(fd, STDIN_FILENO) < 0 ? -errno : STDIN_FILENO;
243 close_nointr_nofail(fd);
251 assert_not_reached("Unknown input type");
255 static int setup_output(const ExecContext *context, const char *ident) {
259 /* This expects the input is already set up */
261 switch (context->std_output) {
263 case EXEC_OUTPUT_INHERIT:
265 /* If the input is connected to a terminal, inherit that... */
266 if (is_terminal_input(context->std_input))
267 return dup2(STDIN_FILENO, STDOUT_FILENO) < 0 ? -errno : STDOUT_FILENO;
271 case EXEC_OUTPUT_NULL:
272 return open_null_as(O_WRONLY, STDOUT_FILENO);
274 case EXEC_OUTPUT_TTY: {
275 if (is_terminal_input(context->std_input))
276 return dup2(STDIN_FILENO, STDOUT_FILENO) < 0 ? -errno : STDOUT_FILENO;
278 /* We don't reset the terminal if this is just about output */
279 return open_terminal_as(tty_path(context), O_WRONLY, STDOUT_FILENO);
282 case EXEC_OUTPUT_SYSLOG:
283 case EXEC_OUTPUT_KERNEL:
284 return connect_logger_as(context, context->std_output, ident, STDOUT_FILENO);
287 assert_not_reached("Unknown output type");
291 static int setup_error(const ExecContext *context, const char *ident) {
294 /* This expects the input and output are already set up */
296 /* Don't change the stderr file descriptor if we inherit all
297 * the way and are not on a tty */
298 if (context->std_error == EXEC_OUTPUT_INHERIT &&
299 context->std_output == EXEC_OUTPUT_INHERIT &&
300 !is_terminal_input(context->std_input))
301 return STDERR_FILENO;
303 /* Duplicate form stdout if possible */
304 if (context->std_error == context->std_output ||
305 context->std_error == EXEC_OUTPUT_INHERIT)
306 return dup2(STDOUT_FILENO, STDERR_FILENO) < 0 ? -errno : STDERR_FILENO;
308 switch (context->std_error) {
310 case EXEC_OUTPUT_NULL:
311 return open_null_as(O_WRONLY, STDERR_FILENO);
313 case EXEC_OUTPUT_TTY:
314 if (is_terminal_input(context->std_input))
315 return dup2(STDIN_FILENO, STDERR_FILENO) < 0 ? -errno : STDERR_FILENO;
317 /* We don't reset the terminal if this is just about output */
318 return open_terminal_as(tty_path(context), O_WRONLY, STDERR_FILENO);
320 case EXEC_OUTPUT_SYSLOG:
321 case EXEC_OUTPUT_KERNEL:
322 return connect_logger_as(context, context->std_error, ident, STDERR_FILENO);
325 assert_not_reached("Unknown error type");
329 static int setup_confirm_stdio(const ExecContext *context,
331 int *_saved_stdout) {
332 int fd = -1, saved_stdin, saved_stdout = -1, r;
335 assert(_saved_stdin);
336 assert(_saved_stdout);
338 /* This returns positive EXIT_xxx return values instead of
339 * negative errno style values! */
341 if ((saved_stdin = fcntl(STDIN_FILENO, F_DUPFD, 3)) < 0)
344 if ((saved_stdout = fcntl(STDOUT_FILENO, F_DUPFD, 3)) < 0) {
349 if ((fd = acquire_terminal(
351 context->std_input == EXEC_INPUT_TTY_FAIL,
352 context->std_input == EXEC_INPUT_TTY_FORCE)) < 0) {
357 if (dup2(fd, STDIN_FILENO) < 0) {
362 if (dup2(fd, STDOUT_FILENO) < 0) {
368 close_nointr_nofail(fd);
370 *_saved_stdin = saved_stdin;
371 *_saved_stdout = saved_stdout;
376 if (saved_stdout >= 0)
377 close_nointr_nofail(saved_stdout);
379 if (saved_stdin >= 0)
380 close_nointr_nofail(saved_stdin);
383 close_nointr_nofail(fd);
388 static int restore_conform_stdio(const ExecContext *context,
396 assert(*saved_stdin >= 0);
397 assert(saved_stdout);
398 assert(*saved_stdout >= 0);
400 /* This returns positive EXIT_xxx return values instead of
401 * negative errno style values! */
403 if (is_terminal_input(context->std_input)) {
405 /* The service wants terminal input. */
409 context->std_output == EXEC_OUTPUT_INHERIT ||
410 context->std_output == EXEC_OUTPUT_TTY;
413 /* If the service doesn't want a controlling terminal,
414 * then we need to get rid entirely of what we have
417 if (release_terminal() < 0)
420 if (dup2(*saved_stdin, STDIN_FILENO) < 0)
423 if (dup2(*saved_stdout, STDOUT_FILENO) < 0)
426 *keep_stdout = *keep_stdin = false;
432 static int get_group_creds(const char *groupname, gid_t *gid) {
439 /* We enforce some special rules for gid=0: in order to avoid
440 * NSS lookups for root we hardcode its data. */
442 if (streq(groupname, "root") || streq(groupname, "0")) {
447 if (safe_atolu(groupname, &lu) >= 0) {
449 g = getgrgid((gid_t) lu);
452 g = getgrnam(groupname);
456 return errno != 0 ? -errno : -ESRCH;
462 static int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home) {
472 /* We enforce some special rules for uid=0: in order to avoid
473 * NSS lookups for root we hardcode its data. */
475 if (streq(*username, "root") || streq(*username, "0")) {
483 if (safe_atolu(*username, &lu) >= 0) {
485 p = getpwuid((uid_t) lu);
487 /* If there are multiple users with the same id, make
488 * sure to leave $USER to the configured value instead
489 * of the first occurence in the database. However if
490 * the uid was configured by a numeric uid, then let's
491 * pick the real username from /etc/passwd. */
493 *username = p->pw_name;
496 p = getpwnam(*username);
500 return errno != 0 ? -errno : -ESRCH;
508 static int enforce_groups(const ExecContext *context, const char *username, gid_t gid) {
509 bool keep_groups = false;
514 /* Lookup and ser GID and supplementary group list. Here too
515 * we avoid NSS lookups for gid=0. */
517 if (context->group || username) {
520 if ((r = get_group_creds(context->group, &gid)) < 0)
523 /* First step, initialize groups from /etc/groups */
524 if (username && gid != 0) {
525 if (initgroups(username, gid) < 0)
531 /* Second step, set our gids */
532 if (setresgid(gid, gid, gid) < 0)
536 if (context->supplementary_groups) {
541 /* Final step, initialize any manually set supplementary groups */
542 ngroups_max = (int) sysconf(_SC_NGROUPS_MAX);
544 if (!(gids = new(gid_t, ngroups_max)))
548 if ((k = getgroups(ngroups_max, gids)) < 0) {
555 STRV_FOREACH(i, context->supplementary_groups) {
557 if (k >= ngroups_max) {
562 if ((r = get_group_creds(*i, gids+k)) < 0) {
570 if (setgroups(k, gids) < 0) {
581 static int enforce_user(const ExecContext *context, uid_t uid) {
585 /* Sets (but doesn't lookup) the uid and make sure we keep the
586 * capabilities while doing so. */
588 if (context->capabilities) {
590 static const cap_value_t bits[] = {
591 CAP_SETUID, /* Necessary so that we can run setresuid() below */
592 CAP_SETPCAP /* Necessary so that we can set PR_SET_SECUREBITS later on */
595 /* First step: If we need to keep capabilities but
596 * drop privileges we need to make sure we keep our
597 * caps, whiel we drop priviliges. */
599 int sb = context->secure_bits|SECURE_KEEP_CAPS;
601 if (prctl(PR_GET_SECUREBITS) != sb)
602 if (prctl(PR_SET_SECUREBITS, sb) < 0)
606 /* Second step: set the capabilites. This will reduce
607 * the capabilities to the minimum we need. */
609 if (!(d = cap_dup(context->capabilities)))
612 if (cap_set_flag(d, CAP_EFFECTIVE, ELEMENTSOF(bits), bits, CAP_SET) < 0 ||
613 cap_set_flag(d, CAP_PERMITTED, ELEMENTSOF(bits), bits, CAP_SET) < 0) {
619 if (cap_set_proc(d) < 0) {
628 /* Third step: actually set the uids */
629 if (setresuid(uid, uid, uid) < 0)
632 /* At this point we should have all necessary capabilities but
633 are otherwise a normal user. However, the caps might got
634 corrupted due to the setresuid() so we need clean them up
635 later. This is done outside of this call. */
640 int exec_spawn(ExecCommand *command,
641 const ExecContext *context,
642 int *fds, unsigned n_fds,
643 bool apply_permissions,
646 CGroupBonding *cgroup_bondings,
656 assert(fds || n_fds <= 0);
658 if (!(line = exec_command_line(command)))
661 log_debug("About to execute: %s", line);
665 if ((r = cgroup_bonding_realize_list(cgroup_bondings)))
668 if ((pid = fork()) < 0)
674 const char *username = NULL, *home = NULL;
675 uid_t uid = (uid_t) -1;
676 gid_t gid = (gid_t) -1;
677 char **our_env = NULL, **final_env = NULL;
679 int saved_stdout = -1, saved_stdin = -1;
680 bool keep_stdout = false, keep_stdin = false;
684 if (sigemptyset(&ss) < 0 ||
685 sigprocmask(SIG_SETMASK, &ss, NULL) < 0) {
686 r = EXIT_SIGNAL_MASK;
695 umask(context->umask);
700 /* Set up terminal for the question */
701 if ((r = setup_confirm_stdio(context,
702 &saved_stdin, &saved_stdout)))
705 /* Now ask the question. */
706 if (!(line = exec_command_line(command))) {
711 r = ask(&response, "yns", "Execute %s? [Yes, No, Skip] ", line);
714 if (r < 0 || response == 'n') {
717 } else if (response == 's') {
722 /* Release terminal for the question */
723 if ((r = restore_conform_stdio(context,
724 &saved_stdin, &saved_stdout,
725 &keep_stdin, &keep_stdout)))
730 if (setup_input(context) < 0) {
736 if (setup_output(context, file_name_from_path(command->path)) < 0) {
741 if (setup_error(context, file_name_from_path(command->path)) < 0) {
747 if ((r = cgroup_bonding_install_list(cgroup_bondings, 0)) < 0) {
752 if (context->oom_adjust_set) {
755 snprintf(t, sizeof(t), "%i", context->oom_adjust);
758 if (write_one_line_file("/proc/self/oom_adj", t) < 0) {
764 if (context->nice_set)
765 if (setpriority(PRIO_PROCESS, 0, context->nice) < 0) {
770 if (context->cpu_sched_set) {
771 struct sched_param param;
774 param.sched_priority = context->cpu_sched_priority;
776 if (sched_setscheduler(0, context->cpu_sched_policy |
777 (context->cpu_sched_reset_on_fork ? SCHED_RESET_ON_FORK : 0), ¶m) < 0) {
778 r = EXIT_SETSCHEDULER;
783 if (context->cpu_affinity_set)
784 if (sched_setaffinity(0, sizeof(context->cpu_affinity), &context->cpu_affinity) < 0) {
785 r = EXIT_CPUAFFINITY;
789 if (context->ioprio_set)
790 if (ioprio_set(IOPRIO_WHO_PROCESS, 0, context->ioprio) < 0) {
795 if (context->timer_slack_ns_set)
796 if (prctl(PR_SET_TIMERSLACK, context->timer_slack_ns_set) < 0) {
802 username = context->user;
803 if (get_user_creds(&username, &uid, &gid, &home) < 0) {
809 if (apply_permissions)
810 if (enforce_groups(context, username, uid) < 0) {
816 if (context->root_directory)
817 if (chroot(context->root_directory) < 0) {
822 if (chdir(context->working_directory ? context->working_directory : "/") < 0) {
830 if (asprintf(&d, "%s/%s",
831 context->root_directory ? context->root_directory : "",
832 context->working_directory ? context->working_directory : "") < 0) {
846 if (close_all_fds(fds, n_fds) < 0 ||
847 shift_fds(fds, n_fds) < 0 ||
848 flags_fds(fds, n_fds, context->non_blocking) < 0) {
853 if (apply_permissions) {
855 for (i = 0; i < RLIMIT_NLIMITS; i++) {
856 if (!context->rlimit[i])
859 if (setrlimit(i, context->rlimit[i]) < 0) {
866 if (enforce_user(context, uid) < 0) {
871 /* PR_GET_SECUREBITS is not priviliged, while
872 * PR_SET_SECUREBITS is. So to suppress
873 * potential EPERMs we'll try not to call
874 * PR_SET_SECUREBITS unless necessary. */
875 if (prctl(PR_GET_SECUREBITS) != context->secure_bits)
876 if (prctl(PR_SET_SECUREBITS, context->secure_bits) < 0) {
881 if (context->capabilities)
882 if (cap_set_proc(context->capabilities) < 0) {
883 r = EXIT_CAPABILITIES;
888 if (!(our_env = new0(char*, 6))) {
894 if (asprintf(our_env + n_env++, "LISTEN_PID=%llu", (unsigned long long) getpid()) < 0 ||
895 asprintf(our_env + n_env++, "LISTEN_FDS=%u", n_fds) < 0) {
901 if (asprintf(our_env + n_env++, "HOME=%s", home) < 0) {
907 if (asprintf(our_env + n_env++, "LOGNAME=%s", username) < 0 ||
908 asprintf(our_env + n_env++, "USER=%s", username) < 0) {
913 if (!(final_env = strv_env_merge(environ, our_env, context->environment, NULL))) {
918 execve(command->path, command->argv, final_env);
923 strv_free(final_env);
925 if (saved_stdin >= 0)
926 close_nointr_nofail(saved_stdin);
928 if (saved_stdout >= 0)
929 close_nointr_nofail(saved_stdout);
934 /* We add the new process to the cgroup both in the child (so
935 * that we can be sure that no user code is ever executed
936 * outside of the cgroup) and in the parent (so that we can be
937 * sure that when we kill the cgroup the process will be
940 if ((r = cgroup_bonding_install_list(cgroup_bondings, pid)) < 0) {
945 log_debug("Forked %s as %llu", command->path, (unsigned long long) pid);
947 command->exec_status.pid = pid;
948 command->exec_status.start_timestamp = now(CLOCK_REALTIME);
954 void exec_context_init(ExecContext *c) {
959 c->oom_adjust_set = false;
962 c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0);
963 c->ioprio_set = false;
964 c->cpu_sched_policy = SCHED_OTHER;
965 c->cpu_sched_priority = 0;
966 c->cpu_sched_set = false;
967 CPU_ZERO(&c->cpu_affinity);
968 c->cpu_affinity_set = false;
969 c->timer_slack_ns = 0;
970 c->timer_slack_ns_set = false;
972 c->cpu_sched_reset_on_fork = false;
973 c->non_blocking = false;
978 c->syslog_priority = LOG_DAEMON|LOG_INFO;
981 c->capability_bounding_set_drop = 0;
984 void exec_context_done(ExecContext *c) {
989 strv_free(c->environment);
990 c->environment = NULL;
992 for (l = 0; l < ELEMENTSOF(c->rlimit); l++) {
997 free(c->working_directory);
998 c->working_directory = NULL;
999 free(c->root_directory);
1000 c->root_directory = NULL;
1005 free(c->syslog_identifier);
1006 c->syslog_identifier = NULL;
1014 strv_free(c->supplementary_groups);
1015 c->supplementary_groups = NULL;
1017 if (c->capabilities) {
1018 cap_free(c->capabilities);
1019 c->capabilities = NULL;
1023 void exec_command_done(ExecCommand *c) {
1033 void exec_command_done_array(ExecCommand *c, unsigned n) {
1036 for (i = 0; i < n; i++)
1037 exec_command_done(c+i);
1040 void exec_command_free_list(ExecCommand *c) {
1044 LIST_REMOVE(ExecCommand, command, c, i);
1045 exec_command_done(i);
1050 void exec_command_free_array(ExecCommand **c, unsigned n) {
1053 for (i = 0; i < n; i++) {
1054 exec_command_free_list(c[i]);
1059 void exec_context_dump(ExecContext *c, FILE* f, const char *prefix) {
1071 "%sWorkingDirectory: %s\n"
1072 "%sRootDirectory: %s\n"
1073 "%sNonBlocking: %s\n",
1075 prefix, c->working_directory ? c->working_directory : "/",
1076 prefix, c->root_directory ? c->root_directory : "/",
1077 prefix, yes_no(c->non_blocking));
1080 for (e = c->environment; *e; e++)
1081 fprintf(f, "%sEnvironment: %s\n", prefix, *e);
1088 if (c->oom_adjust_set)
1090 "%sOOMAdjust: %i\n",
1091 prefix, c->oom_adjust);
1093 for (i = 0; i < RLIM_NLIMITS; i++)
1095 fprintf(f, "%s%s: %llu\n", prefix, rlimit_to_string(i), (unsigned long long) c->rlimit[i]->rlim_max);
1099 "%sIOSchedulingClass: %s\n"
1100 "%sIOPriority: %i\n",
1101 prefix, ioprio_class_to_string(IOPRIO_PRIO_CLASS(c->ioprio)),
1102 prefix, (int) IOPRIO_PRIO_DATA(c->ioprio));
1104 if (c->cpu_sched_set)
1106 "%sCPUSchedulingPolicy: %s\n"
1107 "%sCPUSchedulingPriority: %i\n"
1108 "%sCPUSchedulingResetOnFork: %s\n",
1109 prefix, sched_policy_to_string(c->cpu_sched_policy),
1110 prefix, c->cpu_sched_priority,
1111 prefix, yes_no(c->cpu_sched_reset_on_fork));
1113 if (c->cpu_affinity_set) {
1114 fprintf(f, "%sCPUAffinity:", prefix);
1115 for (i = 0; i < CPU_SETSIZE; i++)
1116 if (CPU_ISSET(i, &c->cpu_affinity))
1117 fprintf(f, " %i", i);
1121 if (c->timer_slack_ns_set)
1122 fprintf(f, "%sTimerSlackNS: %lu\n", prefix, c->timer_slack_ns);
1125 "%sStandardInput: %s\n"
1126 "%sStandardOutput: %s\n"
1127 "%sStandardError: %s\n",
1128 prefix, exec_input_to_string(c->std_input),
1129 prefix, exec_output_to_string(c->std_output),
1130 prefix, exec_output_to_string(c->std_error));
1135 prefix, c->tty_path);
1137 if (c->std_output == EXEC_OUTPUT_SYSLOG || c->std_output == EXEC_OUTPUT_KERNEL ||
1138 c->std_error == EXEC_OUTPUT_SYSLOG || c->std_error == EXEC_OUTPUT_KERNEL)
1140 "%sSyslogFacility: %s\n"
1141 "%sSyslogLevel: %s\n",
1142 prefix, log_facility_to_string(LOG_FAC(c->syslog_priority)),
1143 prefix, log_level_to_string(LOG_PRI(c->syslog_priority)));
1145 if (c->capabilities) {
1147 if ((t = cap_to_text(c->capabilities, NULL))) {
1148 fprintf(f, "%sCapabilities: %s\n",
1155 fprintf(f, "%sSecure Bits:%s%s%s%s%s%s\n",
1157 (c->secure_bits & SECURE_KEEP_CAPS) ? " keep-caps" : "",
1158 (c->secure_bits & SECURE_KEEP_CAPS_LOCKED) ? " keep-caps-locked" : "",
1159 (c->secure_bits & SECURE_NO_SETUID_FIXUP) ? " no-setuid-fixup" : "",
1160 (c->secure_bits & SECURE_NO_SETUID_FIXUP_LOCKED) ? " no-setuid-fixup-locked" : "",
1161 (c->secure_bits & SECURE_NOROOT) ? " noroot" : "",
1162 (c->secure_bits & SECURE_NOROOT_LOCKED) ? "noroot-locked" : "");
1164 if (c->capability_bounding_set_drop) {
1165 fprintf(f, "%sCapabilityBoundingSetDrop:", prefix);
1167 for (i = 0; i <= CAP_LAST_CAP; i++)
1168 if (c->capability_bounding_set_drop & (1 << i)) {
1171 if ((t = cap_to_name(i))) {
1172 fprintf(f, " %s", t);
1181 fprintf(f, "%sUser: %s", prefix, c->user);
1183 fprintf(f, "%sGroup: %s", prefix, c->group);
1185 if (c->supplementary_groups) {
1188 fprintf(f, "%sSupplementaryGroups:", prefix);
1190 STRV_FOREACH(g, c->supplementary_groups)
1191 fprintf(f, " %s", *g);
1197 void exec_status_fill(ExecStatus *s, pid_t pid, int code, int status) {
1201 s->exit_timestamp = now(CLOCK_REALTIME);
1207 void exec_status_dump(ExecStatus *s, FILE *f, const char *prefix) {
1208 char buf[FORMAT_TIMESTAMP_MAX];
1221 prefix, (unsigned long long) s->pid);
1223 if (s->start_timestamp > 0)
1225 "%sStart Timestamp: %s\n",
1226 prefix, format_timestamp(buf, sizeof(buf), s->start_timestamp));
1228 if (s->exit_timestamp > 0)
1230 "%sExit Timestamp: %s\n"
1232 "%sExit Status: %i\n",
1233 prefix, format_timestamp(buf, sizeof(buf), s->exit_timestamp),
1234 prefix, sigchld_code_to_string(s->code),
1238 char *exec_command_line(ExecCommand *c) {
1247 STRV_FOREACH(a, c->argv)
1250 if (!(n = new(char, k)))
1254 STRV_FOREACH(a, c->argv) {
1261 if (strpbrk(*a, WHITESPACE)) {
1272 /* FIXME: this doesn't really handle arguments that have
1273 * spaces and ticks in them */
1278 void exec_command_dump(ExecCommand *c, FILE *f, const char *prefix) {
1280 const char *prefix2;
1289 p2 = strappend(prefix, "\t");
1290 prefix2 = p2 ? p2 : prefix;
1292 cmd = exec_command_line(c);
1295 "%sCommand Line: %s\n",
1296 prefix, cmd ? cmd : strerror(ENOMEM));
1300 exec_status_dump(&c->exec_status, f, prefix2);
1305 void exec_command_dump_list(ExecCommand *c, FILE *f, const char *prefix) {
1311 LIST_FOREACH(command, c, c)
1312 exec_command_dump(c, f, prefix);
1315 void exec_command_append_list(ExecCommand **l, ExecCommand *e) {
1322 /* It's kinda important that we keep the order here */
1323 LIST_FIND_TAIL(ExecCommand, command, *l, end);
1324 LIST_INSERT_AFTER(ExecCommand, command, *l, end, e);
1329 int exec_command_set(ExecCommand *c, const char *path, ...) {
1337 l = strv_new_ap(path, ap);
1343 if (!(p = strdup(path))) {
1357 const char* exit_status_to_string(ExitStatus status) {
1366 case EXIT_INVALIDARGUMENT:
1367 return "INVALIDARGUMENT";
1369 case EXIT_NOTIMPLEMENTED:
1370 return "NOTIMPLEMENTED";
1372 case EXIT_NOPERMISSION:
1373 return "NOPERMISSION";
1375 case EXIT_NOTINSTALLED:
1376 return "NOTINSSTALLED";
1378 case EXIT_NOTCONFIGURED:
1379 return "NOTCONFIGURED";
1381 case EXIT_NOTRUNNING:
1382 return "NOTRUNNING";
1402 case EXIT_OOM_ADJUST:
1403 return "OOM_ADJUST";
1405 case EXIT_SIGNAL_MASK:
1406 return "SIGNAL_MASK";
1420 case EXIT_TIMERSLACK:
1421 return "TIMERSLACK";
1423 case EXIT_SECUREBITS:
1424 return "SECUREBITS";
1426 case EXIT_SETSCHEDULER:
1427 return "SETSCHEDULER";
1429 case EXIT_CPUAFFINITY:
1430 return "CPUAFFINITY";
1438 case EXIT_CAPABILITIES:
1439 return "CAPABILITIES";
1458 static const char* const exec_input_table[_EXEC_INPUT_MAX] = {
1459 [EXEC_INPUT_NULL] = "null",
1460 [EXEC_INPUT_TTY] = "tty",
1461 [EXEC_INPUT_TTY_FORCE] = "tty-force",
1462 [EXEC_INPUT_TTY_FAIL] = "tty-fail"
1465 static const char* const exec_output_table[_EXEC_OUTPUT_MAX] = {
1466 [EXEC_OUTPUT_INHERIT] = "inherit",
1467 [EXEC_OUTPUT_NULL] = "null",
1468 [EXEC_OUTPUT_TTY] = "tty",
1469 [EXEC_OUTPUT_SYSLOG] = "syslog",
1470 [EXEC_OUTPUT_KERNEL] = "kernel"
1473 DEFINE_STRING_TABLE_LOOKUP(exec_output, ExecOutput);
1475 DEFINE_STRING_TABLE_LOOKUP(exec_input, ExecInput);