2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
16 #include <sys/resource.h>
17 #include <sys/types.h>
18 #include <sys/socket.h>
32 #include <libubox/md5.h>
39 #define UJAIL_BIN_PATH "/sbin/ujail"
42 INSTANCE_ATTR_COMMAND,
47 INSTANCE_ATTR_TRIGGER,
48 INSTANCE_ATTR_RESPAWN,
57 INSTANCE_ATTR_NO_NEW_PRIVS,
60 INSTANCE_ATTR_SECCOMP,
61 INSTANCE_ATTR_PIDFILE,
62 INSTANCE_ATTR_RELOADSIG,
63 INSTANCE_ATTR_TERMTIMEOUT,
64 INSTANCE_ATTR_FACILITY,
65 INSTANCE_ATTR_EXTROOT,
66 INSTANCE_ATTR_OVERLAYDIR,
67 INSTANCE_ATTR_TMPOVERLAYSIZE,
71 static const struct blobmsg_policy instance_attr[__INSTANCE_ATTR_MAX] = {
72 [INSTANCE_ATTR_COMMAND] = { "command", BLOBMSG_TYPE_ARRAY },
73 [INSTANCE_ATTR_ENV] = { "env", BLOBMSG_TYPE_TABLE },
74 [INSTANCE_ATTR_DATA] = { "data", BLOBMSG_TYPE_TABLE },
75 [INSTANCE_ATTR_NETDEV] = { "netdev", BLOBMSG_TYPE_ARRAY },
76 [INSTANCE_ATTR_FILE] = { "file", BLOBMSG_TYPE_ARRAY },
77 [INSTANCE_ATTR_TRIGGER] = { "triggers", BLOBMSG_TYPE_ARRAY },
78 [INSTANCE_ATTR_RESPAWN] = { "respawn", BLOBMSG_TYPE_ARRAY },
79 [INSTANCE_ATTR_NICE] = { "nice", BLOBMSG_TYPE_INT32 },
80 [INSTANCE_ATTR_LIMITS] = { "limits", BLOBMSG_TYPE_TABLE },
81 [INSTANCE_ATTR_WATCH] = { "watch", BLOBMSG_TYPE_ARRAY },
82 [INSTANCE_ATTR_ERROR] = { "error", BLOBMSG_TYPE_ARRAY },
83 [INSTANCE_ATTR_USER] = { "user", BLOBMSG_TYPE_STRING },
84 [INSTANCE_ATTR_GROUP] = { "group", BLOBMSG_TYPE_STRING },
85 [INSTANCE_ATTR_STDOUT] = { "stdout", BLOBMSG_TYPE_BOOL },
86 [INSTANCE_ATTR_STDERR] = { "stderr", BLOBMSG_TYPE_BOOL },
87 [INSTANCE_ATTR_NO_NEW_PRIVS] = { "no_new_privs", BLOBMSG_TYPE_BOOL },
88 [INSTANCE_ATTR_JAIL] = { "jail", BLOBMSG_TYPE_TABLE },
89 [INSTANCE_ATTR_TRACE] = { "trace", BLOBMSG_TYPE_BOOL },
90 [INSTANCE_ATTR_SECCOMP] = { "seccomp", BLOBMSG_TYPE_STRING },
91 [INSTANCE_ATTR_PIDFILE] = { "pidfile", BLOBMSG_TYPE_STRING },
92 [INSTANCE_ATTR_RELOADSIG] = { "reload_signal", BLOBMSG_TYPE_INT32 },
93 [INSTANCE_ATTR_TERMTIMEOUT] = { "term_timeout", BLOBMSG_TYPE_INT32 },
94 [INSTANCE_ATTR_FACILITY] = { "facility", BLOBMSG_TYPE_STRING },
95 [INSTANCE_ATTR_EXTROOT] = { "extroot", BLOBMSG_TYPE_STRING },
96 [INSTANCE_ATTR_OVERLAYDIR] = { "overlaydir", BLOBMSG_TYPE_STRING },
97 [INSTANCE_ATTR_TMPOVERLAYSIZE] = { "tmpoverlaysize", BLOBMSG_TYPE_STRING },
113 JAIL_ATTR_REQUIREJAIL,
117 static const struct blobmsg_policy jail_attr[__JAIL_ATTR_MAX] = {
118 [JAIL_ATTR_NAME] = { "name", BLOBMSG_TYPE_STRING },
119 [JAIL_ATTR_HOSTNAME] = { "hostname", BLOBMSG_TYPE_STRING },
120 [JAIL_ATTR_PROCFS] = { "procfs", BLOBMSG_TYPE_BOOL },
121 [JAIL_ATTR_SYSFS] = { "sysfs", BLOBMSG_TYPE_BOOL },
122 [JAIL_ATTR_UBUS] = { "ubus", BLOBMSG_TYPE_BOOL },
123 [JAIL_ATTR_LOG] = { "log", BLOBMSG_TYPE_BOOL },
124 [JAIL_ATTR_RONLY] = { "ronly", BLOBMSG_TYPE_BOOL },
125 [JAIL_ATTR_MOUNT] = { "mount", BLOBMSG_TYPE_TABLE },
126 [JAIL_ATTR_NETNS] = { "netns", BLOBMSG_TYPE_BOOL },
127 [JAIL_ATTR_USERNS] = { "userns", BLOBMSG_TYPE_BOOL },
128 [JAIL_ATTR_CGROUPSNS] = { "cgroupsns", BLOBMSG_TYPE_BOOL },
129 [JAIL_ATTR_CONSOLE] = { "console", BLOBMSG_TYPE_BOOL },
130 [JAIL_ATTR_REQUIREJAIL] = { "requirejail", BLOBMSG_TYPE_BOOL },
133 struct instance_netdev {
134 struct blobmsg_list_node node;
138 struct instance_file {
139 struct blobmsg_list_node node;
148 static const struct rlimit_name rlimit_names[] = {
150 { "core", RLIMIT_CORE },
151 { "cpu", RLIMIT_CPU },
152 { "data", RLIMIT_DATA },
153 { "fsize", RLIMIT_FSIZE },
154 { "memlock", RLIMIT_MEMLOCK },
155 { "nofile", RLIMIT_NOFILE },
156 { "nproc", RLIMIT_NPROC },
157 { "rss", RLIMIT_RSS },
158 { "stack", RLIMIT_STACK },
160 { "nice", RLIMIT_NICE },
161 { "rtprio", RLIMIT_RTPRIO },
162 { "msgqueue", RLIMIT_MSGQUEUE },
163 { "sigpending", RLIMIT_SIGPENDING },
168 static void closefd(int fd)
170 if (fd > STDERR_FILENO)
174 /* convert a string into numeric syslog facility or return -1 if no match found */
176 syslog_facility_str_to_int(const char *facility)
178 CODE *p = facilitynames;
180 while (p->c_name && strcasecmp(p->c_name, facility))
187 instance_limits(const char *limit, const char *value)
191 unsigned long cur, max;
193 for (i = 0; rlimit_names[i].name != NULL; i++) {
194 if (strcmp(rlimit_names[i].name, limit))
196 if (!strcmp(value, "unlimited")) {
197 rlim.rlim_cur = RLIM_INFINITY;
198 rlim.rlim_max = RLIM_INFINITY;
200 if (getrlimit(rlimit_names[i].resource, &rlim))
206 if (sscanf(value, "%lu %lu", &cur, &max) < 1)
213 setrlimit(rlimit_names[i].resource, &rlim);
219 jail_run(struct service_instance *in, char **argv)
221 struct blobmsg_list_node *var;
222 struct jail *jail = &in->jail;
225 argv[argc++] = UJAIL_BIN_PATH;
229 argv[argc++] = jail->name;
232 if (jail->hostname) {
234 argv[argc++] = jail->hostname;
239 argv[argc++] = in->seccomp;
244 argv[argc++] = in->user;
249 argv[argc++] = in->group;
252 if (in->no_new_privs)
284 argv[argc++] = in->extroot;
287 if (in->overlaydir) {
289 argv[argc++] = in->overlaydir;
292 if (in->tmpoverlaysize) {
294 argv[argc++] = in->tmpoverlaysize;
297 if (in->require_jail)
300 blobmsg_list_for_each(&jail->mount, var) {
301 const char *type = blobmsg_data(var->data);
307 argv[argc++] = (char *) blobmsg_name(var->data);
316 instance_removepid(struct service_instance *in) {
319 if (unlink(in->pidfile)) {
320 ERROR("Failed to remove pidfile: %s: %m\n", in->pidfile);
327 instance_writepid(struct service_instance *in)
334 _pidfile = fopen(in->pidfile, "w");
335 if (_pidfile == NULL) {
336 ERROR("failed to open pidfile for writing: %s: %m", in->pidfile);
339 if (fprintf(_pidfile, "%d\n", in->proc.pid) < 0) {
340 ERROR("failed to write pidfile: %s: %m", in->pidfile);
344 if (fclose(_pidfile)) {
345 ERROR("failed to close pidfile: %s: %m", in->pidfile);
353 instance_run(struct service_instance *in, int _stdout, int _stderr)
355 struct blobmsg_list_node *var;
356 struct blob_attr *cur;
358 int argc = 1; /* NULL terminated */
360 bool seccomp = !in->trace && !in->has_jail && in->seccomp;
361 bool setlbf = _stdout >= 0;
364 setpriority(PRIO_PROCESS, 0, in->nice);
366 blobmsg_for_each_attr(cur, in->command, rem)
369 blobmsg_list_for_each(&in->env, var)
370 setenv(blobmsg_name(var->data), blobmsg_data(var->data), 1);
373 setenv("SECCOMP_FILE", in->seccomp, 1);
376 setenv("LD_PRELOAD", "/lib/libsetlbf.so", 1);
378 blobmsg_list_for_each(&in->limits, var)
379 instance_limits(blobmsg_name(var->data), blobmsg_data(var->data));
381 if (in->trace || seccomp)
384 argv = alloca(sizeof(char *) * (argc + in->jail.argc));
387 #ifdef SECCOMP_SUPPORT
389 argv[argc++] = "/sbin/utrace";
391 argv[argc++] = "/sbin/seccomp-trace";
393 if (in->trace || seccomp)
394 ULOG_WARN("Seccomp support for %s::%s not available\n", in->srv->name, in->name);
398 argc = jail_run(in, argv);
399 if (argc != in->jail.argc)
400 ULOG_WARN("expected %i jail params, used %i for %s::%s\n",
401 in->jail.argc, argc, in->srv->name, in->name);
404 blobmsg_for_each_attr(cur, in->command, rem)
405 argv[argc++] = blobmsg_data(cur);
409 _stdin = open("/dev/null", O_RDONLY);
412 _stdout = open("/dev/null", O_WRONLY);
415 _stderr = open("/dev/null", O_WRONLY);
418 dup2(_stdin, STDIN_FILENO);
422 dup2(_stdout, STDOUT_FILENO);
426 dup2(_stderr, STDERR_FILENO);
430 if (!in->has_jail && in->user && in->pw_gid && initgroups(in->user, in->pw_gid)) {
431 ERROR("failed to initgroups() for user %s: %m\n", in->user);
434 if (!in->has_jail && in->gr_gid && setgid(in->gr_gid)) {
435 ERROR("failed to set group id %d: %m\n", in->gr_gid);
438 if (!in->has_jail && in->uid && setuid(in->uid)) {
439 ERROR("failed to set user id %d: %m\n", in->uid);
443 execvp(argv[0], argv);
448 instance_free_stdio(struct service_instance *in)
450 if (in->_stdout.fd.fd > -1) {
451 ustream_free(&in->_stdout.stream);
452 close(in->_stdout.fd.fd);
453 in->_stdout.fd.fd = -1;
456 if (in->_stderr.fd.fd > -1) {
457 ustream_free(&in->_stderr.stream);
458 close(in->_stderr.fd.fd);
459 in->_stderr.fd.fd = -1;
462 if (in->console.fd.fd > -1) {
463 ustream_free(&in->console.stream);
464 close(in->console.fd.fd);
465 in->console.fd.fd = -1;
468 if (in->console_client.fd.fd > -1) {
469 ustream_free(&in->console_client.stream);
470 close(in->console_client.fd.fd);
471 in->console_client.fd.fd = -1;
476 instance_start(struct service_instance *in)
479 int opipe[2] = { -1, -1 };
480 int epipe[2] = { -1, -1 };
482 if (!avl_is_empty(&in->errors.avl)) {
483 LOG("Not starting instance %s::%s, an error was indicated\n", in->srv->name, in->name);
488 LOG("Not starting instance %s::%s, command not set\n", in->srv->name, in->name);
492 if (in->proc.pending) {
498 instance_free_stdio(in);
499 if (in->_stdout.fd.fd > -2) {
501 ULOG_WARN("pipe() failed: %m\n");
502 opipe[0] = opipe[1] = -1;
506 if (in->_stderr.fd.fd > -2) {
508 ULOG_WARN("pipe() failed: %m\n");
509 epipe[0] = epipe[1] = -1;
527 instance_run(in, opipe[1], epipe[1]);
531 DEBUG(2, "Started instance %s::%s[%d]\n", in->srv->name, in->name, pid);
533 instance_writepid(in);
534 clock_gettime(CLOCK_MONOTONIC, &in->start);
535 uloop_process_add(&in->proc);
538 ustream_fd_init(&in->_stdout, opipe[0]);
540 fcntl(opipe[0], F_SETFD, FD_CLOEXEC);
544 ustream_fd_init(&in->_stderr, epipe[0]);
546 fcntl(epipe[0], F_SETFD, FD_CLOEXEC);
549 service_event("instance.start", in->srv->name, in->name);
553 instance_stdio(struct ustream *s, int prio, struct service_instance *in)
555 char *newline, *str, *arg0, ident[32];
558 arg0 = basename(blobmsg_data(blobmsg_data(in->command)));
559 snprintf(ident, sizeof(ident), "%s[%d]", arg0, in->proc.pid);
560 ulog_open(ULOG_SYSLOG, in->syslog_facility, ident);
563 str = ustream_get_read_buf(s, &len);
567 newline = memchr(str, '\n', len);
568 if (!newline && (s->r.buffer_len != len))
573 len = newline + 1 - str;
575 ulog(prio, "%s\n", str);
577 ustream_consume(s, len);
580 ulog_open(ULOG_SYSLOG, LOG_DAEMON, "procd");
584 instance_stdout(struct ustream *s, int bytes)
586 instance_stdio(s, LOG_INFO,
587 container_of(s, struct service_instance, _stdout.stream));
591 instance_console(struct ustream *s, int bytes)
593 struct service_instance *in = container_of(s, struct service_instance, console.stream);
598 buf = ustream_get_read_buf(s, &len);
602 ulog(LOG_INFO, "out: %s\n", buf);
604 /* test if console client is attached */
605 if (in->console_client.fd.fd > -1)
606 ustream_write(&in->console_client.stream, buf, len, false);
608 ustream_consume(s, len);
613 instance_console_client(struct ustream *s, int bytes)
615 struct service_instance *in = container_of(s, struct service_instance, console_client.stream);
620 buf = ustream_get_read_buf(s, &len);
624 ulog(LOG_INFO, "in: %s\n", buf);
625 ustream_write(&in->console.stream, buf, len, false);
626 ustream_consume(s, len);
631 instance_stderr(struct ustream *s, int bytes)
633 instance_stdio(s, LOG_ERR,
634 container_of(s, struct service_instance, _stderr.stream));
638 instance_timeout(struct uloop_timeout *t)
640 struct service_instance *in;
642 in = container_of(t, struct service_instance, timeout);
645 LOG("Instance %s::%s pid %d not stopped on SIGTERM, sending SIGKILL instead\n",
646 in->srv->name, in->name, in->proc.pid);
647 kill(in->proc.pid, SIGKILL);
648 } else if (in->restart || in->respawn)
653 instance_delete(struct service_instance *in)
655 struct service *s = in->srv;
657 avl_delete(&s->instances.avl, &in->node.avl);
663 instance_exit_code(int ret)
665 if (WIFEXITED(ret)) {
666 return WEXITSTATUS(ret);
669 if (WIFSIGNALED(ret)) {
670 return SIGNALLED_OFFSET + WTERMSIG(ret);
673 if (WIFSTOPPED(ret)) {
674 return WSTOPSIG(ret);
681 instance_exit(struct uloop_process *p, int ret)
683 struct service_instance *in;
687 in = container_of(p, struct service_instance, proc);
689 clock_gettime(CLOCK_MONOTONIC, &tp);
690 runtime = tp.tv_sec - in->start.tv_sec;
692 DEBUG(2, "Instance %s::%s exit with error code %d after %ld seconds\n", in->srv->name, in->name, ret, runtime);
694 in->exit_code = instance_exit_code(ret);
695 uloop_timeout_cancel(&in->timeout);
696 service_event("instance.stop", in->srv->name, in->name);
699 instance_removepid(in);
704 } else if (in->restart) {
706 } else if (in->respawn) {
707 if (runtime < in->respawn_threshold)
710 in->respawn_count = 0;
711 if (in->respawn_count > in->respawn_retry && in->respawn_retry > 0 ) {
712 LOG("Instance %s::%s s in a crash loop %d crashes, %ld seconds since last crash\n",
713 in->srv->name, in->name, in->respawn_count, runtime);
714 in->restart = in->respawn = 0;
716 service_event("instance.fail", in->srv->name, in->name);
718 service_event("instance.respawn", in->srv->name, in->name);
719 uloop_timeout_set(&in->timeout, in->respawn_timeout * 1000);
725 instance_stop(struct service_instance *in, bool halt)
727 if (!in->proc.pending) {
733 in->restart = in->respawn = false;
734 kill(in->proc.pid, SIGTERM);
735 uloop_timeout_set(&in->timeout, in->term_timeout * 1000);
739 instance_restart(struct service_instance *in)
741 if (!in->proc.pending)
744 if (in->reload_signal) {
745 kill(in->proc.pid, in->reload_signal);
751 kill(in->proc.pid, SIGTERM);
752 uloop_timeout_set(&in->timeout, in->term_timeout * 1000);
755 static bool string_changed(const char *a, const char *b)
757 return !((!a && !b) || (a && b && !strcmp(a, b)));
761 instance_config_changed(struct service_instance *in, struct service_instance *in_new)
766 if (!blob_attr_equal(in->command, in_new->command))
769 if (!blobmsg_list_equal(&in->env, &in_new->env))
772 if (!blobmsg_list_equal(&in->netdev, &in_new->netdev))
775 if (!blobmsg_list_equal(&in->file, &in_new->file))
778 if (in->nice != in_new->nice)
781 if (in->syslog_facility != in_new->syslog_facility)
784 if (string_changed(in->user, in_new->user))
787 if (string_changed(in->group, in_new->group))
790 if (in->uid != in_new->uid)
793 if (in->pw_gid != in_new->pw_gid)
796 if (string_changed(in->pidfile, in_new->pidfile))
799 if (in->respawn_retry != in_new->respawn_retry)
801 if (in->respawn_threshold != in_new->respawn_threshold)
803 if (in->respawn_timeout != in_new->respawn_timeout)
806 if ((!in->seccomp && in_new->seccomp) ||
807 (in->seccomp && !in_new->seccomp) ||
808 (in->seccomp && in_new->seccomp && strcmp(in->seccomp, in_new->seccomp)))
811 if (!blobmsg_list_equal(&in->limits, &in_new->limits))
814 if (!blobmsg_list_equal(&in->jail.mount, &in_new->jail.mount))
817 if (!blobmsg_list_equal(&in->errors, &in_new->errors))
824 instance_netdev_cmp(struct blobmsg_list_node *l1, struct blobmsg_list_node *l2)
826 struct instance_netdev *n1 = container_of(l1, struct instance_netdev, node);
827 struct instance_netdev *n2 = container_of(l2, struct instance_netdev, node);
829 return n1->ifindex == n2->ifindex;
833 instance_netdev_update(struct blobmsg_list_node *l)
835 struct instance_netdev *n = container_of(l, struct instance_netdev, node);
837 n->ifindex = if_nametoindex(n->node.avl.key);
841 instance_file_cmp(struct blobmsg_list_node *l1, struct blobmsg_list_node *l2)
843 struct instance_file *f1 = container_of(l1, struct instance_file, node);
844 struct instance_file *f2 = container_of(l2, struct instance_file, node);
846 return !memcmp(f1->md5, f2->md5, sizeof(f1->md5));
850 instance_file_update(struct blobmsg_list_node *l)
852 struct instance_file *f = container_of(l, struct instance_file, node);
857 memset(f->md5, 0, sizeof(f->md5));
859 fd = open(l->avl.key, O_RDONLY);
865 len = read(fd, buf, sizeof(buf));
875 md5_hash(buf, len, &md5);
878 md5_end(f->md5, &md5);
883 instance_fill_any(struct blobmsg_list *l, struct blob_attr *cur)
888 blobmsg_list_fill(l, blobmsg_data(cur), blobmsg_data_len(cur), false);
892 instance_fill_array(struct blobmsg_list *l, struct blob_attr *cur, blobmsg_update_cb cb, bool array)
894 struct blobmsg_list_node *node;
899 if (!blobmsg_check_attr_list(cur, BLOBMSG_TYPE_STRING))
902 blobmsg_list_fill(l, blobmsg_data(cur), blobmsg_data_len(cur), array);
904 blobmsg_list_for_each(l, node)
911 instance_jail_parse(struct service_instance *in, struct blob_attr *attr)
913 struct blob_attr *tb[__JAIL_ATTR_MAX];
914 struct jail *jail = &in->jail;
916 blobmsg_parse(jail_attr, __JAIL_ATTR_MAX, tb,
917 blobmsg_data(attr), blobmsg_data_len(attr));
921 if (tb[JAIL_ATTR_REQUIREJAIL]) {
922 in->require_jail = true;
925 if (tb[JAIL_ATTR_NAME]) {
926 jail->name = strdup(blobmsg_get_string(tb[JAIL_ATTR_NAME]));
929 if (tb[JAIL_ATTR_HOSTNAME]) {
930 jail->hostname = strdup(blobmsg_get_string(tb[JAIL_ATTR_HOSTNAME]));
933 if (tb[JAIL_ATTR_PROCFS]) {
934 jail->procfs = blobmsg_get_bool(tb[JAIL_ATTR_PROCFS]);
937 if (tb[JAIL_ATTR_SYSFS]) {
938 jail->sysfs = blobmsg_get_bool(tb[JAIL_ATTR_SYSFS]);
941 if (tb[JAIL_ATTR_UBUS]) {
942 jail->ubus = blobmsg_get_bool(tb[JAIL_ATTR_UBUS]);
945 if (tb[JAIL_ATTR_LOG]) {
946 jail->log = blobmsg_get_bool(tb[JAIL_ATTR_LOG]);
949 if (tb[JAIL_ATTR_RONLY]) {
950 jail->ronly = blobmsg_get_bool(tb[JAIL_ATTR_RONLY]);
953 if (tb[JAIL_ATTR_NETNS]) {
954 jail->netns = blobmsg_get_bool(tb[JAIL_ATTR_NETNS]);
957 if (tb[JAIL_ATTR_USERNS]) {
958 jail->userns = blobmsg_get_bool(tb[JAIL_ATTR_USERNS]);
961 if (tb[JAIL_ATTR_CGROUPSNS]) {
962 jail->cgroupsns = blobmsg_get_bool(tb[JAIL_ATTR_CGROUPSNS]);
965 if (tb[JAIL_ATTR_CONSOLE]) {
966 jail->console = blobmsg_get_bool(tb[JAIL_ATTR_CONSOLE]);
970 if (tb[JAIL_ATTR_MOUNT]) {
971 struct blob_attr *cur;
974 blobmsg_for_each_attr(cur, tb[JAIL_ATTR_MOUNT], rem)
976 instance_fill_array(&jail->mount, tb[JAIL_ATTR_MOUNT], NULL, false);
993 if (in->tmpoverlaysize)
996 if (in->no_new_privs)
1003 instance_config_parse_command(struct service_instance *in, struct blob_attr **tb)
1005 struct blob_attr *cur, *cur2;
1009 cur = tb[INSTANCE_ATTR_COMMAND];
1015 if (!blobmsg_check_attr_list(cur, BLOBMSG_TYPE_STRING))
1018 blobmsg_for_each_attr(cur2, cur, rem) {
1028 instance_config_parse(struct service_instance *in)
1030 struct blob_attr *tb[__INSTANCE_ATTR_MAX];
1031 struct blob_attr *cur, *cur2;
1035 blobmsg_parse(instance_attr, __INSTANCE_ATTR_MAX, tb,
1036 blobmsg_data(in->config), blobmsg_data_len(in->config));
1038 if (!instance_config_parse_command(in, tb))
1041 if (tb[INSTANCE_ATTR_TERMTIMEOUT])
1042 in->term_timeout = blobmsg_get_u32(tb[INSTANCE_ATTR_TERMTIMEOUT]);
1043 if (tb[INSTANCE_ATTR_RESPAWN]) {
1045 uint32_t vals[3] = { 3600, 5, 5};
1047 blobmsg_for_each_attr(cur2, tb[INSTANCE_ATTR_RESPAWN], rem) {
1048 if ((i >= 3) && (blobmsg_type(cur2) == BLOBMSG_TYPE_STRING))
1050 vals[i] = atoi(blobmsg_get_string(cur2));
1054 in->respawn_count = 0;
1055 in->respawn_threshold = vals[0];
1056 in->respawn_timeout = vals[1];
1057 in->respawn_retry = vals[2];
1059 if (tb[INSTANCE_ATTR_TRIGGER]) {
1060 in->trigger = tb[INSTANCE_ATTR_TRIGGER];
1061 trigger_add(in->trigger, in);
1064 if (tb[INSTANCE_ATTR_WATCH]) {
1065 blobmsg_for_each_attr(cur2, tb[INSTANCE_ATTR_WATCH], rem) {
1066 if (blobmsg_type(cur2) != BLOBMSG_TYPE_STRING)
1068 DEBUG(3, "watch for %s\n", blobmsg_get_string(cur2));
1069 watch_add(blobmsg_get_string(cur2), in);
1073 if ((cur = tb[INSTANCE_ATTR_NICE])) {
1074 in->nice = (int8_t) blobmsg_get_u32(cur);
1075 if (in->nice < -20 || in->nice > 20)
1079 if (tb[INSTANCE_ATTR_USER]) {
1080 const char *user = blobmsg_get_string(tb[INSTANCE_ATTR_USER]);
1081 struct passwd *p = getpwnam(user);
1083 in->user = strdup(user);
1084 in->uid = p->pw_uid;
1085 in->gr_gid = in->pw_gid = p->pw_gid;
1089 if (tb[INSTANCE_ATTR_GROUP]) {
1090 const char *group = blobmsg_get_string(tb[INSTANCE_ATTR_GROUP]);
1091 struct group *p = getgrnam(group);
1093 in->group = strdup(group);
1094 in->gr_gid = p->gr_gid;
1098 if (tb[INSTANCE_ATTR_TRACE])
1099 in->trace = blobmsg_get_bool(tb[INSTANCE_ATTR_TRACE]);
1101 if (tb[INSTANCE_ATTR_NO_NEW_PRIVS])
1102 in->no_new_privs = blobmsg_get_bool(tb[INSTANCE_ATTR_NO_NEW_PRIVS]);
1104 if (!in->trace && tb[INSTANCE_ATTR_SECCOMP])
1105 in->seccomp = strdup(blobmsg_get_string(tb[INSTANCE_ATTR_SECCOMP]));
1107 if (tb[INSTANCE_ATTR_EXTROOT])
1108 in->extroot = strdup(blobmsg_get_string(tb[INSTANCE_ATTR_EXTROOT]));
1110 if (tb[INSTANCE_ATTR_OVERLAYDIR])
1111 in->overlaydir = strdup(blobmsg_get_string(tb[INSTANCE_ATTR_OVERLAYDIR]));
1113 if (tb[INSTANCE_ATTR_TMPOVERLAYSIZE])
1114 in->tmpoverlaysize = strdup(blobmsg_get_string(tb[INSTANCE_ATTR_TMPOVERLAYSIZE]));
1116 if (tb[INSTANCE_ATTR_PIDFILE]) {
1117 char *pidfile = blobmsg_get_string(tb[INSTANCE_ATTR_PIDFILE]);
1119 in->pidfile = strdup(pidfile);
1122 if (tb[INSTANCE_ATTR_RELOADSIG])
1123 in->reload_signal = blobmsg_get_u32(tb[INSTANCE_ATTR_RELOADSIG]);
1125 if (!in->trace && tb[INSTANCE_ATTR_JAIL])
1126 in->has_jail = instance_jail_parse(in, tb[INSTANCE_ATTR_JAIL]);
1129 r = stat(UJAIL_BIN_PATH, &s);
1131 if (in->require_jail) {
1132 ERROR("Cannot jail service %s::%s. %s: %m (%d)\n",
1133 in->srv->name, in->name, UJAIL_BIN_PATH, r);
1136 DEBUG(2, "unable to find %s: %m (%d)\n", UJAIL_BIN_PATH, r);
1137 in->has_jail = false;
1141 if (tb[INSTANCE_ATTR_STDOUT] && blobmsg_get_bool(tb[INSTANCE_ATTR_STDOUT]))
1142 in->_stdout.fd.fd = -1;
1144 if (tb[INSTANCE_ATTR_STDERR] && blobmsg_get_bool(tb[INSTANCE_ATTR_STDERR]))
1145 in->_stderr.fd.fd = -1;
1147 instance_fill_any(&in->data, tb[INSTANCE_ATTR_DATA]);
1149 if (!instance_fill_array(&in->env, tb[INSTANCE_ATTR_ENV], NULL, false))
1152 if (!instance_fill_array(&in->netdev, tb[INSTANCE_ATTR_NETDEV], instance_netdev_update, true))
1155 if (!instance_fill_array(&in->file, tb[INSTANCE_ATTR_FILE], instance_file_update, true))
1158 if (!instance_fill_array(&in->limits, tb[INSTANCE_ATTR_LIMITS], NULL, false))
1161 if (!instance_fill_array(&in->errors, tb[INSTANCE_ATTR_ERROR], NULL, true))
1164 if (tb[INSTANCE_ATTR_FACILITY]) {
1165 int facility = syslog_facility_str_to_int(blobmsg_get_string(tb[INSTANCE_ATTR_FACILITY]));
1166 if (facility != -1) {
1167 in->syslog_facility = facility;
1168 DEBUG(3, "setting facility '%s'\n", blobmsg_get_string(tb[INSTANCE_ATTR_FACILITY]));
1170 DEBUG(3, "unknown syslog facility '%s' given, using default (LOG_DAEMON)\n", blobmsg_get_string(tb[INSTANCE_ATTR_FACILITY]));
1177 instance_config_cleanup(struct service_instance *in)
1179 blobmsg_list_free(&in->env);
1180 blobmsg_list_free(&in->data);
1181 blobmsg_list_free(&in->netdev);
1182 blobmsg_list_free(&in->file);
1183 blobmsg_list_free(&in->limits);
1184 blobmsg_list_free(&in->errors);
1185 blobmsg_list_free(&in->jail.mount);
1189 instance_config_move_strdup(char **dst, char *src)
1203 instance_config_move(struct service_instance *in, struct service_instance *in_src)
1205 instance_config_cleanup(in);
1206 blobmsg_list_move(&in->env, &in_src->env);
1207 blobmsg_list_move(&in->data, &in_src->data);
1208 blobmsg_list_move(&in->netdev, &in_src->netdev);
1209 blobmsg_list_move(&in->file, &in_src->file);
1210 blobmsg_list_move(&in->limits, &in_src->limits);
1211 blobmsg_list_move(&in->errors, &in_src->errors);
1212 blobmsg_list_move(&in->jail.mount, &in_src->jail.mount);
1213 in->trigger = in_src->trigger;
1214 in->command = in_src->command;
1215 in->respawn = in_src->respawn;
1216 in->respawn_retry = in_src->respawn_retry;
1217 in->respawn_threshold = in_src->respawn_threshold;
1218 in->respawn_timeout = in_src->respawn_timeout;
1219 in->name = in_src->name;
1220 in->trace = in_src->trace;
1221 in->node.avl.key = in_src->node.avl.key;
1222 in->syslog_facility = in_src->syslog_facility;
1224 instance_config_move_strdup(&in->pidfile, in_src->pidfile);
1225 instance_config_move_strdup(&in->seccomp, in_src->seccomp);
1226 instance_config_move_strdup(&in->jail.name, in_src->jail.name);
1227 instance_config_move_strdup(&in->jail.hostname, in_src->jail.hostname);
1230 in->config = in_src->config;
1231 in_src->config = NULL;
1235 instance_update(struct service_instance *in, struct service_instance *in_new)
1237 bool changed = instance_config_changed(in, in_new);
1238 bool running = in->proc.pending;
1239 bool stopping = in->halt;
1241 if (!running || stopping) {
1242 instance_config_move(in, in_new);
1246 instance_restart(in);
1247 instance_config_move(in, in_new);
1248 /* restart happens in the child callback handler */
1253 instance_free(struct service_instance *in)
1255 instance_free_stdio(in);
1256 uloop_process_delete(&in->proc);
1257 uloop_timeout_cancel(&in->timeout);
1260 instance_config_cleanup(in);
1265 free(in->overlaydir);
1266 free(in->tmpoverlaysize);
1267 free(in->jail.name);
1268 free(in->jail.hostname);
1275 instance_init(struct service_instance *in, struct service *s, struct blob_attr *config)
1277 config = blob_memdup(config);
1279 in->name = blobmsg_name(config);
1280 in->config = config;
1281 in->timeout.cb = instance_timeout;
1282 in->proc.cb = instance_exit;
1283 in->term_timeout = 5;
1284 in->syslog_facility = LOG_DAEMON;
1286 in->require_jail = false;
1288 in->_stdout.fd.fd = -2;
1289 in->_stdout.stream.string_data = true;
1290 in->_stdout.stream.notify_read = instance_stdout;
1292 in->_stderr.fd.fd = -2;
1293 in->_stderr.stream.string_data = true;
1294 in->_stderr.stream.notify_read = instance_stderr;
1296 in->console.fd.fd = -2;
1297 in->console.stream.string_data = true;
1298 in->console.stream.notify_read = instance_console;
1300 in->console_client.fd.fd = -2;
1301 in->console_client.stream.string_data = true;
1302 in->console_client.stream.notify_read = instance_console_client;
1304 blobmsg_list_init(&in->netdev, struct instance_netdev, node, instance_netdev_cmp);
1305 blobmsg_list_init(&in->file, struct instance_file, node, instance_file_cmp);
1306 blobmsg_list_simple_init(&in->env);
1307 blobmsg_list_simple_init(&in->data);
1308 blobmsg_list_simple_init(&in->limits);
1309 blobmsg_list_simple_init(&in->errors);
1310 blobmsg_list_simple_init(&in->jail.mount);
1311 in->valid = instance_config_parse(in);
1314 void instance_dump(struct blob_buf *b, struct service_instance *in, int verbose)
1321 i = blobmsg_open_table(b, in->name);
1322 blobmsg_add_u8(b, "running", in->proc.pending);
1323 if (in->proc.pending)
1324 blobmsg_add_u32(b, "pid", in->proc.pid);
1326 blobmsg_add_blob(b, in->command);
1327 blobmsg_add_u32(b, "term_timeout", in->term_timeout);
1328 if (!in->proc.pending)
1329 blobmsg_add_u32(b, "exit_code", in->exit_code);
1331 if (!avl_is_empty(&in->errors.avl)) {
1332 struct blobmsg_list_node *var;
1333 void *e = blobmsg_open_array(b, "errors");
1334 blobmsg_list_for_each(&in->errors, var)
1335 blobmsg_add_string(b, NULL, blobmsg_data(var->data));
1336 blobmsg_close_table(b, e);
1339 if (!avl_is_empty(&in->env.avl)) {
1340 struct blobmsg_list_node *var;
1341 void *e = blobmsg_open_table(b, "env");
1342 blobmsg_list_for_each(&in->env, var)
1343 blobmsg_add_string(b, blobmsg_name(var->data), blobmsg_data(var->data));
1344 blobmsg_close_table(b, e);
1347 if (!avl_is_empty(&in->data.avl)) {
1348 struct blobmsg_list_node *var;
1349 void *e = blobmsg_open_table(b, "data");
1350 blobmsg_list_for_each(&in->data, var)
1351 blobmsg_add_blob(b, var->data);
1352 blobmsg_close_table(b, e);
1355 if (!avl_is_empty(&in->limits.avl)) {
1356 struct blobmsg_list_node *var;
1357 void *e = blobmsg_open_table(b, "limits");
1358 blobmsg_list_for_each(&in->limits, var)
1359 blobmsg_add_string(b, blobmsg_name(var->data), blobmsg_data(var->data));
1360 blobmsg_close_table(b, e);
1363 if (in->reload_signal)
1364 blobmsg_add_u32(b, "reload_signal", in->reload_signal);
1367 void *r = blobmsg_open_table(b, "respawn");
1368 blobmsg_add_u32(b, "threshold", in->respawn_threshold);
1369 blobmsg_add_u32(b, "timeout", in->respawn_timeout);
1370 blobmsg_add_u32(b, "retry", in->respawn_retry);
1371 blobmsg_close_table(b, r);
1375 blobmsg_add_u8(b, "trace", true);
1377 if (in->no_new_privs)
1378 blobmsg_add_u8(b, "no_new_privs", true);
1381 blobmsg_add_string(b, "seccomp", in->seccomp);
1384 blobmsg_add_string(b, "pidfile", in->pidfile);
1387 blobmsg_add_string(b, "user", in->user);
1390 blobmsg_add_string(b, "group", in->group);
1393 void *r = blobmsg_open_table(b, "jail");
1395 blobmsg_add_string(b, "name", in->jail.name);
1396 if (in->jail.hostname)
1397 blobmsg_add_string(b, "hostname", in->jail.hostname);
1399 blobmsg_add_u8(b, "procfs", in->jail.procfs);
1400 blobmsg_add_u8(b, "sysfs", in->jail.sysfs);
1401 blobmsg_add_u8(b, "ubus", in->jail.ubus);
1402 blobmsg_add_u8(b, "log", in->jail.log);
1403 blobmsg_add_u8(b, "ronly", in->jail.ronly);
1404 blobmsg_add_u8(b, "netns", in->jail.netns);
1405 blobmsg_add_u8(b, "userns", in->jail.userns);
1406 blobmsg_add_u8(b, "cgroupsns", in->jail.cgroupsns);
1407 blobmsg_add_u8(b, "console", (in->console.fd.fd > -1));
1408 blobmsg_close_table(b, r);
1409 if (!avl_is_empty(&in->jail.mount.avl)) {
1410 struct blobmsg_list_node *var;
1411 void *e = blobmsg_open_table(b, "mount");
1412 blobmsg_list_for_each(&in->jail.mount, var)
1413 blobmsg_add_string(b, blobmsg_name(var->data), blobmsg_data(var->data));
1414 blobmsg_close_table(b, e);
1419 blobmsg_add_string(b, "extroot", in->extroot);
1421 blobmsg_add_string(b, "overlaydir", in->overlaydir);
1422 if (in->tmpoverlaysize)
1423 blobmsg_add_string(b, "tmpoverlaysize", in->tmpoverlaysize);
1425 if (verbose && in->trigger)
1426 blobmsg_add_blob(b, in->trigger);
1428 blobmsg_close_table(b, i);