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
,
68 static const struct blobmsg_policy instance_attr
[__INSTANCE_ATTR_MAX
] = {
69 [INSTANCE_ATTR_COMMAND
] = { "command", BLOBMSG_TYPE_ARRAY
},
70 [INSTANCE_ATTR_ENV
] = { "env", BLOBMSG_TYPE_TABLE
},
71 [INSTANCE_ATTR_DATA
] = { "data", BLOBMSG_TYPE_TABLE
},
72 [INSTANCE_ATTR_NETDEV
] = { "netdev", BLOBMSG_TYPE_ARRAY
},
73 [INSTANCE_ATTR_FILE
] = { "file", BLOBMSG_TYPE_ARRAY
},
74 [INSTANCE_ATTR_TRIGGER
] = { "triggers", BLOBMSG_TYPE_ARRAY
},
75 [INSTANCE_ATTR_RESPAWN
] = { "respawn", BLOBMSG_TYPE_ARRAY
},
76 [INSTANCE_ATTR_NICE
] = { "nice", BLOBMSG_TYPE_INT32
},
77 [INSTANCE_ATTR_LIMITS
] = { "limits", BLOBMSG_TYPE_TABLE
},
78 [INSTANCE_ATTR_WATCH
] = { "watch", BLOBMSG_TYPE_ARRAY
},
79 [INSTANCE_ATTR_ERROR
] = { "error", BLOBMSG_TYPE_ARRAY
},
80 [INSTANCE_ATTR_USER
] = { "user", BLOBMSG_TYPE_STRING
},
81 [INSTANCE_ATTR_GROUP
] = { "group", BLOBMSG_TYPE_STRING
},
82 [INSTANCE_ATTR_STDOUT
] = { "stdout", BLOBMSG_TYPE_BOOL
},
83 [INSTANCE_ATTR_STDERR
] = { "stderr", BLOBMSG_TYPE_BOOL
},
84 [INSTANCE_ATTR_NO_NEW_PRIVS
] = { "no_new_privs", BLOBMSG_TYPE_BOOL
},
85 [INSTANCE_ATTR_JAIL
] = { "jail", BLOBMSG_TYPE_TABLE
},
86 [INSTANCE_ATTR_TRACE
] = { "trace", BLOBMSG_TYPE_BOOL
},
87 [INSTANCE_ATTR_SECCOMP
] = { "seccomp", BLOBMSG_TYPE_STRING
},
88 [INSTANCE_ATTR_PIDFILE
] = { "pidfile", BLOBMSG_TYPE_STRING
},
89 [INSTANCE_ATTR_RELOADSIG
] = { "reload_signal", BLOBMSG_TYPE_INT32
},
90 [INSTANCE_ATTR_TERMTIMEOUT
] = { "term_timeout", BLOBMSG_TYPE_INT32
},
91 [INSTANCE_ATTR_FACILITY
] = { "facility", BLOBMSG_TYPE_STRING
},
107 static const struct blobmsg_policy jail_attr
[__JAIL_ATTR_MAX
] = {
108 [JAIL_ATTR_NAME
] = { "name", BLOBMSG_TYPE_STRING
},
109 [JAIL_ATTR_HOSTNAME
] = { "hostname", BLOBMSG_TYPE_STRING
},
110 [JAIL_ATTR_PROCFS
] = { "procfs", BLOBMSG_TYPE_BOOL
},
111 [JAIL_ATTR_SYSFS
] = { "sysfs", BLOBMSG_TYPE_BOOL
},
112 [JAIL_ATTR_UBUS
] = { "ubus", BLOBMSG_TYPE_BOOL
},
113 [JAIL_ATTR_LOG
] = { "log", BLOBMSG_TYPE_BOOL
},
114 [JAIL_ATTR_RONLY
] = { "ronly", BLOBMSG_TYPE_BOOL
},
115 [JAIL_ATTR_MOUNT
] = { "mount", BLOBMSG_TYPE_TABLE
},
116 [JAIL_ATTR_NETNS
] = { "netns", BLOBMSG_TYPE_BOOL
},
119 struct instance_netdev
{
120 struct blobmsg_list_node node
;
124 struct instance_file
{
125 struct blobmsg_list_node node
;
134 static const struct rlimit_name rlimit_names
[] = {
136 { "core", RLIMIT_CORE
},
137 { "cpu", RLIMIT_CPU
},
138 { "data", RLIMIT_DATA
},
139 { "fsize", RLIMIT_FSIZE
},
140 { "memlock", RLIMIT_MEMLOCK
},
141 { "nofile", RLIMIT_NOFILE
},
142 { "nproc", RLIMIT_NPROC
},
143 { "rss", RLIMIT_RSS
},
144 { "stack", RLIMIT_STACK
},
146 { "nice", RLIMIT_NICE
},
147 { "rtprio", RLIMIT_RTPRIO
},
148 { "msgqueue", RLIMIT_MSGQUEUE
},
149 { "sigpending", RLIMIT_SIGPENDING
},
154 static void closefd(int fd
)
156 if (fd
> STDERR_FILENO
)
160 /* convert a string into numeric syslog facility or return -1 if no match found */
162 syslog_facility_str_to_int(const char *facility
)
164 CODE
*p
= facilitynames
;
166 while (p
->c_name
&& strcasecmp(p
->c_name
, facility
))
173 instance_limits(const char *limit
, const char *value
)
177 unsigned long cur
, max
;
179 for (i
= 0; rlimit_names
[i
].name
!= NULL
; i
++) {
180 if (strcmp(rlimit_names
[i
].name
, limit
))
182 if (!strcmp(value
, "unlimited")) {
183 rlim
.rlim_cur
= RLIM_INFINITY
;
184 rlim
.rlim_max
= RLIM_INFINITY
;
186 if (getrlimit(rlimit_names
[i
].resource
, &rlim
))
192 if (sscanf(value
, "%lu %lu", &cur
, &max
) < 1)
199 setrlimit(rlimit_names
[i
].resource
, &rlim
);
205 jail_run(struct service_instance
*in
, char **argv
)
207 struct blobmsg_list_node
*var
;
208 struct jail
*jail
= &in
->jail
;
211 argv
[argc
++] = UJAIL_BIN_PATH
;
215 argv
[argc
++] = jail
->name
;
218 if (jail
->hostname
) {
220 argv
[argc
++] = jail
->hostname
;
225 argv
[argc
++] = in
->seccomp
;
230 argv
[argc
++] = in
->user
;
235 argv
[argc
++] = in
->group
;
238 if (in
->no_new_privs
)
259 blobmsg_list_for_each(&jail
->mount
, var
) {
260 const char *type
= blobmsg_data(var
->data
);
266 argv
[argc
++] = (char *) blobmsg_name(var
->data
);
275 instance_removepid(struct service_instance
*in
) {
278 if (unlink(in
->pidfile
)) {
279 ERROR("Failed to remove pidfile: %s: %m\n", in
->pidfile
);
286 instance_writepid(struct service_instance
*in
)
293 _pidfile
= fopen(in
->pidfile
, "w");
294 if (_pidfile
== NULL
) {
295 ERROR("failed to open pidfile for writing: %s: %m", in
->pidfile
);
298 if (fprintf(_pidfile
, "%d\n", in
->proc
.pid
) < 0) {
299 ERROR("failed to write pidfile: %s: %m", in
->pidfile
);
303 if (fclose(_pidfile
)) {
304 ERROR("failed to close pidfile: %s: %m", in
->pidfile
);
312 instance_run(struct service_instance
*in
, int _stdout
, int _stderr
)
314 struct blobmsg_list_node
*var
;
315 struct blob_attr
*cur
;
317 int argc
= 1; /* NULL terminated */
319 bool seccomp
= !in
->trace
&& !in
->has_jail
&& in
->seccomp
;
320 bool setlbf
= _stdout
>= 0;
323 setpriority(PRIO_PROCESS
, 0, in
->nice
);
325 blobmsg_for_each_attr(cur
, in
->command
, rem
)
328 blobmsg_list_for_each(&in
->env
, var
)
329 setenv(blobmsg_name(var
->data
), blobmsg_data(var
->data
), 1);
332 setenv("SECCOMP_FILE", in
->seccomp
, 1);
335 setenv("LD_PRELOAD", "/lib/libsetlbf.so", 1);
337 blobmsg_list_for_each(&in
->limits
, var
)
338 instance_limits(blobmsg_name(var
->data
), blobmsg_data(var
->data
));
340 if (in
->trace
|| seccomp
)
343 argv
= alloca(sizeof(char *) * (argc
+ in
->jail
.argc
));
346 #ifdef SECCOMP_SUPPORT
348 argv
[argc
++] = "/sbin/utrace";
350 argv
[argc
++] = "/sbin/seccomp-trace";
352 if (in
->trace
|| seccomp
)
353 ULOG_WARN("Seccomp support for %s::%s not available\n", in
->srv
->name
, in
->name
);
357 argc
= jail_run(in
, argv
);
358 if (argc
!= in
->jail
.argc
)
359 ULOG_WARN("expected %i jail params, used %i for %s::%s\n",
360 in
->jail
.argc
, argc
, in
->srv
->name
, in
->name
);
363 blobmsg_for_each_attr(cur
, in
->command
, rem
)
364 argv
[argc
++] = blobmsg_data(cur
);
368 _stdin
= open("/dev/null", O_RDONLY
);
371 _stdout
= open("/dev/null", O_WRONLY
);
374 _stderr
= open("/dev/null", O_WRONLY
);
377 dup2(_stdin
, STDIN_FILENO
);
381 dup2(_stdout
, STDOUT_FILENO
);
385 dup2(_stderr
, STDERR_FILENO
);
389 if (!in
->has_jail
&& in
->user
&& in
->pw_gid
&& initgroups(in
->user
, in
->pw_gid
)) {
390 ERROR("failed to initgroups() for user %s: %m\n", in
->user
);
393 if (!in
->has_jail
&& in
->gr_gid
&& setgid(in
->gr_gid
)) {
394 ERROR("failed to set group id %d: %m\n", in
->gr_gid
);
397 if (!in
->has_jail
&& in
->uid
&& setuid(in
->uid
)) {
398 ERROR("failed to set user id %d: %m\n", in
->uid
);
402 execvp(argv
[0], argv
);
407 instance_free_stdio(struct service_instance
*in
)
409 if (in
->_stdout
.fd
.fd
> -1) {
410 ustream_free(&in
->_stdout
.stream
);
411 close(in
->_stdout
.fd
.fd
);
412 in
->_stdout
.fd
.fd
= -1;
415 if (in
->_stderr
.fd
.fd
> -1) {
416 ustream_free(&in
->_stderr
.stream
);
417 close(in
->_stderr
.fd
.fd
);
418 in
->_stderr
.fd
.fd
= -1;
423 instance_start(struct service_instance
*in
)
426 int opipe
[2] = { -1, -1 };
427 int epipe
[2] = { -1, -1 };
429 if (!avl_is_empty(&in
->errors
.avl
)) {
430 LOG("Not starting instance %s::%s, an error was indicated\n", in
->srv
->name
, in
->name
);
435 LOG("Not starting instance %s::%s, command not set\n", in
->srv
->name
, in
->name
);
439 if (in
->proc
.pending
) {
445 instance_free_stdio(in
);
446 if (in
->_stdout
.fd
.fd
> -2) {
448 ULOG_WARN("pipe() failed: %m\n");
449 opipe
[0] = opipe
[1] = -1;
453 if (in
->_stderr
.fd
.fd
> -2) {
455 ULOG_WARN("pipe() failed: %m\n");
456 epipe
[0] = epipe
[1] = -1;
474 instance_run(in
, opipe
[1], epipe
[1]);
478 DEBUG(2, "Started instance %s::%s[%d]\n", in
->srv
->name
, in
->name
, pid
);
480 instance_writepid(in
);
481 clock_gettime(CLOCK_MONOTONIC
, &in
->start
);
482 uloop_process_add(&in
->proc
);
485 ustream_fd_init(&in
->_stdout
, opipe
[0]);
487 fcntl(opipe
[0], F_SETFD
, FD_CLOEXEC
);
491 ustream_fd_init(&in
->_stderr
, epipe
[0]);
493 fcntl(epipe
[0], F_SETFD
, FD_CLOEXEC
);
496 service_event("instance.start", in
->srv
->name
, in
->name
);
500 instance_stdio(struct ustream
*s
, int prio
, struct service_instance
*in
)
502 char *newline
, *str
, *arg0
, ident
[32];
505 arg0
= basename(blobmsg_data(blobmsg_data(in
->command
)));
506 snprintf(ident
, sizeof(ident
), "%s[%d]", arg0
, in
->proc
.pid
);
507 ulog_open(ULOG_SYSLOG
, in
->syslog_facility
, ident
);
510 str
= ustream_get_read_buf(s
, &len
);
514 newline
= memchr(str
, '\n', len
);
515 if (!newline
&& (s
->r
.buffer_len
!= len
))
520 len
= newline
+ 1 - str
;
522 ulog(prio
, "%s\n", str
);
524 ustream_consume(s
, len
);
527 ulog_open(ULOG_SYSLOG
, LOG_DAEMON
, "procd");
531 instance_stdout(struct ustream
*s
, int bytes
)
533 instance_stdio(s
, LOG_INFO
,
534 container_of(s
, struct service_instance
, _stdout
.stream
));
538 instance_stderr(struct ustream
*s
, int bytes
)
540 instance_stdio(s
, LOG_ERR
,
541 container_of(s
, struct service_instance
, _stderr
.stream
));
545 instance_timeout(struct uloop_timeout
*t
)
547 struct service_instance
*in
;
549 in
= container_of(t
, struct service_instance
, timeout
);
552 LOG("Instance %s::%s pid %d not stopped on SIGTERM, sending SIGKILL instead\n",
553 in
->srv
->name
, in
->name
, in
->proc
.pid
);
554 kill(in
->proc
.pid
, SIGKILL
);
555 } else if (in
->restart
|| in
->respawn
)
560 instance_delete(struct service_instance
*in
)
562 struct service
*s
= in
->srv
;
564 avl_delete(&s
->instances
.avl
, &in
->node
.avl
);
570 instance_exit_code(int ret
)
572 if (WIFEXITED(ret
)) {
573 return WEXITSTATUS(ret
);
576 if (WIFSIGNALED(ret
)) {
577 return SIGNALLED_OFFSET
+ WTERMSIG(ret
);
580 if (WIFSTOPPED(ret
)) {
581 return WSTOPSIG(ret
);
588 instance_exit(struct uloop_process
*p
, int ret
)
590 struct service_instance
*in
;
594 in
= container_of(p
, struct service_instance
, proc
);
596 clock_gettime(CLOCK_MONOTONIC
, &tp
);
597 runtime
= tp
.tv_sec
- in
->start
.tv_sec
;
599 DEBUG(2, "Instance %s::%s exit with error code %d after %ld seconds\n", in
->srv
->name
, in
->name
, ret
, runtime
);
601 in
->exit_code
= instance_exit_code(ret
);
602 uloop_timeout_cancel(&in
->timeout
);
603 service_event("instance.stop", in
->srv
->name
, in
->name
);
606 instance_removepid(in
);
611 } else if (in
->restart
) {
613 } else if (in
->respawn
) {
614 if (runtime
< in
->respawn_threshold
)
617 in
->respawn_count
= 0;
618 if (in
->respawn_count
> in
->respawn_retry
&& in
->respawn_retry
> 0 ) {
619 LOG("Instance %s::%s s in a crash loop %d crashes, %ld seconds since last crash\n",
620 in
->srv
->name
, in
->name
, in
->respawn_count
, runtime
);
621 in
->restart
= in
->respawn
= 0;
623 service_event("instance.fail", in
->srv
->name
, in
->name
);
625 service_event("instance.respawn", in
->srv
->name
, in
->name
);
626 uloop_timeout_set(&in
->timeout
, in
->respawn_timeout
* 1000);
632 instance_stop(struct service_instance
*in
, bool halt
)
634 if (!in
->proc
.pending
) {
640 in
->restart
= in
->respawn
= false;
641 kill(in
->proc
.pid
, SIGTERM
);
642 uloop_timeout_set(&in
->timeout
, in
->term_timeout
* 1000);
646 instance_restart(struct service_instance
*in
)
648 if (!in
->proc
.pending
)
651 if (in
->reload_signal
) {
652 kill(in
->proc
.pid
, in
->reload_signal
);
658 kill(in
->proc
.pid
, SIGTERM
);
659 uloop_timeout_set(&in
->timeout
, in
->term_timeout
* 1000);
662 static bool string_changed(const char *a
, const char *b
)
664 return !((!a
&& !b
) || (a
&& b
&& !strcmp(a
, b
)));
668 instance_config_changed(struct service_instance
*in
, struct service_instance
*in_new
)
673 if (!blob_attr_equal(in
->command
, in_new
->command
))
676 if (!blobmsg_list_equal(&in
->env
, &in_new
->env
))
679 if (!blobmsg_list_equal(&in
->netdev
, &in_new
->netdev
))
682 if (!blobmsg_list_equal(&in
->file
, &in_new
->file
))
685 if (in
->nice
!= in_new
->nice
)
688 if (in
->syslog_facility
!= in_new
->syslog_facility
)
691 if (string_changed(in
->user
, in_new
->user
))
694 if (string_changed(in
->group
, in_new
->group
))
697 if (in
->uid
!= in_new
->uid
)
700 if (in
->pw_gid
!= in_new
->pw_gid
)
703 if (string_changed(in
->pidfile
, in_new
->pidfile
))
706 if (in
->respawn_retry
!= in_new
->respawn_retry
)
708 if (in
->respawn_threshold
!= in_new
->respawn_threshold
)
710 if (in
->respawn_timeout
!= in_new
->respawn_timeout
)
713 if ((!in
->seccomp
&& in_new
->seccomp
) ||
714 (in
->seccomp
&& !in_new
->seccomp
) ||
715 (in
->seccomp
&& in_new
->seccomp
&& strcmp(in
->seccomp
, in_new
->seccomp
)))
718 if (!blobmsg_list_equal(&in
->limits
, &in_new
->limits
))
721 if (!blobmsg_list_equal(&in
->jail
.mount
, &in_new
->jail
.mount
))
724 if (!blobmsg_list_equal(&in
->errors
, &in_new
->errors
))
731 instance_netdev_cmp(struct blobmsg_list_node
*l1
, struct blobmsg_list_node
*l2
)
733 struct instance_netdev
*n1
= container_of(l1
, struct instance_netdev
, node
);
734 struct instance_netdev
*n2
= container_of(l2
, struct instance_netdev
, node
);
736 return n1
->ifindex
== n2
->ifindex
;
740 instance_netdev_update(struct blobmsg_list_node
*l
)
742 struct instance_netdev
*n
= container_of(l
, struct instance_netdev
, node
);
744 n
->ifindex
= if_nametoindex(n
->node
.avl
.key
);
748 instance_file_cmp(struct blobmsg_list_node
*l1
, struct blobmsg_list_node
*l2
)
750 struct instance_file
*f1
= container_of(l1
, struct instance_file
, node
);
751 struct instance_file
*f2
= container_of(l2
, struct instance_file
, node
);
753 return !memcmp(f1
->md5
, f2
->md5
, sizeof(f1
->md5
));
757 instance_file_update(struct blobmsg_list_node
*l
)
759 struct instance_file
*f
= container_of(l
, struct instance_file
, node
);
764 memset(f
->md5
, 0, sizeof(f
->md5
));
766 fd
= open(l
->avl
.key
, O_RDONLY
);
772 len
= read(fd
, buf
, sizeof(buf
));
782 md5_hash(buf
, len
, &md5
);
785 md5_end(f
->md5
, &md5
);
790 instance_fill_any(struct blobmsg_list
*l
, struct blob_attr
*cur
)
795 blobmsg_list_fill(l
, blobmsg_data(cur
), blobmsg_data_len(cur
), false);
799 instance_fill_array(struct blobmsg_list
*l
, struct blob_attr
*cur
, blobmsg_update_cb cb
, bool array
)
801 struct blobmsg_list_node
*node
;
806 if (!blobmsg_check_attr_list(cur
, BLOBMSG_TYPE_STRING
))
809 blobmsg_list_fill(l
, blobmsg_data(cur
), blobmsg_data_len(cur
), array
);
811 blobmsg_list_for_each(l
, node
)
818 instance_jail_parse(struct service_instance
*in
, struct blob_attr
*attr
)
820 struct blob_attr
*tb
[__JAIL_ATTR_MAX
];
821 struct jail
*jail
= &in
->jail
;
825 r
= stat(UJAIL_BIN_PATH
, &s
);
827 ERROR("unable to find %s: %m (%d)\n", UJAIL_BIN_PATH
, r
);
831 blobmsg_parse(jail_attr
, __JAIL_ATTR_MAX
, tb
,
832 blobmsg_data(attr
), blobmsg_data_len(attr
));
836 if (tb
[JAIL_ATTR_NAME
]) {
837 jail
->name
= strdup(blobmsg_get_string(tb
[JAIL_ATTR_NAME
]));
840 if (tb
[JAIL_ATTR_HOSTNAME
]) {
841 jail
->hostname
= strdup(blobmsg_get_string(tb
[JAIL_ATTR_HOSTNAME
]));
844 if (tb
[JAIL_ATTR_PROCFS
]) {
845 jail
->procfs
= blobmsg_get_bool(tb
[JAIL_ATTR_PROCFS
]);
848 if (tb
[JAIL_ATTR_SYSFS
]) {
849 jail
->sysfs
= blobmsg_get_bool(tb
[JAIL_ATTR_SYSFS
]);
852 if (tb
[JAIL_ATTR_UBUS
]) {
853 jail
->ubus
= blobmsg_get_bool(tb
[JAIL_ATTR_UBUS
]);
856 if (tb
[JAIL_ATTR_LOG
]) {
857 jail
->log
= blobmsg_get_bool(tb
[JAIL_ATTR_LOG
]);
860 if (tb
[JAIL_ATTR_RONLY
]) {
861 jail
->ronly
= blobmsg_get_bool(tb
[JAIL_ATTR_RONLY
]);
864 if (tb
[JAIL_ATTR_NETNS
]) {
865 jail
->netns
= blobmsg_get_bool(tb
[JAIL_ATTR_NETNS
]);
868 if (tb
[JAIL_ATTR_MOUNT
]) {
869 struct blob_attr
*cur
;
872 blobmsg_for_each_attr(cur
, tb
[JAIL_ATTR_MOUNT
], rem
)
874 instance_fill_array(&jail
->mount
, tb
[JAIL_ATTR_MOUNT
], NULL
, false);
885 if (in
->no_new_privs
)
892 instance_config_parse_command(struct service_instance
*in
, struct blob_attr
**tb
)
894 struct blob_attr
*cur
, *cur2
;
898 cur
= tb
[INSTANCE_ATTR_COMMAND
];
904 if (!blobmsg_check_attr_list(cur
, BLOBMSG_TYPE_STRING
))
907 blobmsg_for_each_attr(cur2
, cur
, rem
) {
917 instance_config_parse(struct service_instance
*in
)
919 struct blob_attr
*tb
[__INSTANCE_ATTR_MAX
];
920 struct blob_attr
*cur
, *cur2
;
923 blobmsg_parse(instance_attr
, __INSTANCE_ATTR_MAX
, tb
,
924 blobmsg_data(in
->config
), blobmsg_data_len(in
->config
));
926 if (!instance_config_parse_command(in
, tb
))
929 if (tb
[INSTANCE_ATTR_TERMTIMEOUT
])
930 in
->term_timeout
= blobmsg_get_u32(tb
[INSTANCE_ATTR_TERMTIMEOUT
]);
931 if (tb
[INSTANCE_ATTR_RESPAWN
]) {
933 uint32_t vals
[3] = { 3600, 5, 5};
935 blobmsg_for_each_attr(cur2
, tb
[INSTANCE_ATTR_RESPAWN
], rem
) {
936 if ((i
>= 3) && (blobmsg_type(cur2
) == BLOBMSG_TYPE_STRING
))
938 vals
[i
] = atoi(blobmsg_get_string(cur2
));
942 in
->respawn_count
= 0;
943 in
->respawn_threshold
= vals
[0];
944 in
->respawn_timeout
= vals
[1];
945 in
->respawn_retry
= vals
[2];
947 if (tb
[INSTANCE_ATTR_TRIGGER
]) {
948 in
->trigger
= tb
[INSTANCE_ATTR_TRIGGER
];
949 trigger_add(in
->trigger
, in
);
952 if (tb
[INSTANCE_ATTR_WATCH
]) {
953 blobmsg_for_each_attr(cur2
, tb
[INSTANCE_ATTR_WATCH
], rem
) {
954 if (blobmsg_type(cur2
) != BLOBMSG_TYPE_STRING
)
956 DEBUG(3, "watch for %s\n", blobmsg_get_string(cur2
));
957 watch_add(blobmsg_get_string(cur2
), in
);
961 if ((cur
= tb
[INSTANCE_ATTR_NICE
])) {
962 in
->nice
= (int8_t) blobmsg_get_u32(cur
);
963 if (in
->nice
< -20 || in
->nice
> 20)
967 if (tb
[INSTANCE_ATTR_USER
]) {
968 const char *user
= blobmsg_get_string(tb
[INSTANCE_ATTR_USER
]);
969 struct passwd
*p
= getpwnam(user
);
971 in
->user
= strdup(user
);
973 in
->gr_gid
= in
->pw_gid
= p
->pw_gid
;
977 if (tb
[INSTANCE_ATTR_GROUP
]) {
978 const char *group
= blobmsg_get_string(tb
[INSTANCE_ATTR_GROUP
]);
979 struct group
*p
= getgrnam(group
);
981 in
->group
= strdup(group
);
982 in
->gr_gid
= p
->gr_gid
;
986 if (tb
[INSTANCE_ATTR_TRACE
])
987 in
->trace
= blobmsg_get_bool(tb
[INSTANCE_ATTR_TRACE
]);
989 if (tb
[INSTANCE_ATTR_NO_NEW_PRIVS
])
990 in
->no_new_privs
= blobmsg_get_bool(tb
[INSTANCE_ATTR_NO_NEW_PRIVS
]);
992 if (!in
->trace
&& tb
[INSTANCE_ATTR_SECCOMP
])
993 in
->seccomp
= strdup(blobmsg_get_string(tb
[INSTANCE_ATTR_SECCOMP
]));
995 if (tb
[INSTANCE_ATTR_PIDFILE
]) {
996 char *pidfile
= blobmsg_get_string(tb
[INSTANCE_ATTR_PIDFILE
]);
998 in
->pidfile
= strdup(pidfile
);
1001 if (tb
[INSTANCE_ATTR_RELOADSIG
])
1002 in
->reload_signal
= blobmsg_get_u32(tb
[INSTANCE_ATTR_RELOADSIG
]);
1004 if (!in
->trace
&& tb
[INSTANCE_ATTR_JAIL
])
1005 in
->has_jail
= instance_jail_parse(in
, tb
[INSTANCE_ATTR_JAIL
]);
1007 if (tb
[INSTANCE_ATTR_STDOUT
] && blobmsg_get_bool(tb
[INSTANCE_ATTR_STDOUT
]))
1008 in
->_stdout
.fd
.fd
= -1;
1010 if (tb
[INSTANCE_ATTR_STDERR
] && blobmsg_get_bool(tb
[INSTANCE_ATTR_STDERR
]))
1011 in
->_stderr
.fd
.fd
= -1;
1013 instance_fill_any(&in
->data
, tb
[INSTANCE_ATTR_DATA
]);
1015 if (!instance_fill_array(&in
->env
, tb
[INSTANCE_ATTR_ENV
], NULL
, false))
1018 if (!instance_fill_array(&in
->netdev
, tb
[INSTANCE_ATTR_NETDEV
], instance_netdev_update
, true))
1021 if (!instance_fill_array(&in
->file
, tb
[INSTANCE_ATTR_FILE
], instance_file_update
, true))
1024 if (!instance_fill_array(&in
->limits
, tb
[INSTANCE_ATTR_LIMITS
], NULL
, false))
1027 if (!instance_fill_array(&in
->errors
, tb
[INSTANCE_ATTR_ERROR
], NULL
, true))
1030 if (tb
[INSTANCE_ATTR_FACILITY
]) {
1031 int facility
= syslog_facility_str_to_int(blobmsg_get_string(tb
[INSTANCE_ATTR_FACILITY
]));
1032 if (facility
!= -1) {
1033 in
->syslog_facility
= facility
;
1034 DEBUG(3, "setting facility '%s'\n", blobmsg_get_string(tb
[INSTANCE_ATTR_FACILITY
]));
1036 DEBUG(3, "unknown syslog facility '%s' given, using default (LOG_DAEMON)\n", blobmsg_get_string(tb
[INSTANCE_ATTR_FACILITY
]));
1043 instance_config_cleanup(struct service_instance
*in
)
1045 blobmsg_list_free(&in
->env
);
1046 blobmsg_list_free(&in
->data
);
1047 blobmsg_list_free(&in
->netdev
);
1048 blobmsg_list_free(&in
->file
);
1049 blobmsg_list_free(&in
->limits
);
1050 blobmsg_list_free(&in
->errors
);
1051 blobmsg_list_free(&in
->jail
.mount
);
1055 instance_config_move_strdup(char **dst
, char *src
)
1069 instance_config_move(struct service_instance
*in
, struct service_instance
*in_src
)
1071 instance_config_cleanup(in
);
1072 blobmsg_list_move(&in
->env
, &in_src
->env
);
1073 blobmsg_list_move(&in
->data
, &in_src
->data
);
1074 blobmsg_list_move(&in
->netdev
, &in_src
->netdev
);
1075 blobmsg_list_move(&in
->file
, &in_src
->file
);
1076 blobmsg_list_move(&in
->limits
, &in_src
->limits
);
1077 blobmsg_list_move(&in
->errors
, &in_src
->errors
);
1078 blobmsg_list_move(&in
->jail
.mount
, &in_src
->jail
.mount
);
1079 in
->trigger
= in_src
->trigger
;
1080 in
->command
= in_src
->command
;
1081 in
->respawn
= in_src
->respawn
;
1082 in
->respawn_retry
= in_src
->respawn_retry
;
1083 in
->respawn_threshold
= in_src
->respawn_threshold
;
1084 in
->respawn_timeout
= in_src
->respawn_timeout
;
1085 in
->name
= in_src
->name
;
1086 in
->trace
= in_src
->trace
;
1087 in
->node
.avl
.key
= in_src
->node
.avl
.key
;
1088 in
->syslog_facility
= in_src
->syslog_facility
;
1090 instance_config_move_strdup(&in
->pidfile
, in_src
->pidfile
);
1091 instance_config_move_strdup(&in
->seccomp
, in_src
->seccomp
);
1092 instance_config_move_strdup(&in
->jail
.name
, in_src
->jail
.name
);
1093 instance_config_move_strdup(&in
->jail
.hostname
, in_src
->jail
.hostname
);
1096 in
->config
= in_src
->config
;
1097 in_src
->config
= NULL
;
1101 instance_update(struct service_instance
*in
, struct service_instance
*in_new
)
1103 bool changed
= instance_config_changed(in
, in_new
);
1104 bool running
= in
->proc
.pending
;
1105 bool stopping
= in
->halt
;
1107 if (!running
|| stopping
) {
1108 instance_config_move(in
, in_new
);
1112 instance_restart(in
);
1113 instance_config_move(in
, in_new
);
1114 /* restart happens in the child callback handler */
1119 instance_free(struct service_instance
*in
)
1121 instance_free_stdio(in
);
1122 uloop_process_delete(&in
->proc
);
1123 uloop_timeout_cancel(&in
->timeout
);
1126 instance_config_cleanup(in
);
1130 free(in
->jail
.name
);
1131 free(in
->jail
.hostname
);
1138 instance_init(struct service_instance
*in
, struct service
*s
, struct blob_attr
*config
)
1140 config
= blob_memdup(config
);
1142 in
->name
= blobmsg_name(config
);
1143 in
->config
= config
;
1144 in
->timeout
.cb
= instance_timeout
;
1145 in
->proc
.cb
= instance_exit
;
1146 in
->term_timeout
= 5;
1147 in
->syslog_facility
= LOG_DAEMON
;
1150 in
->_stdout
.fd
.fd
= -2;
1151 in
->_stdout
.stream
.string_data
= true;
1152 in
->_stdout
.stream
.notify_read
= instance_stdout
;
1154 in
->_stderr
.fd
.fd
= -2;
1155 in
->_stderr
.stream
.string_data
= true;
1156 in
->_stderr
.stream
.notify_read
= instance_stderr
;
1158 blobmsg_list_init(&in
->netdev
, struct instance_netdev
, node
, instance_netdev_cmp
);
1159 blobmsg_list_init(&in
->file
, struct instance_file
, node
, instance_file_cmp
);
1160 blobmsg_list_simple_init(&in
->env
);
1161 blobmsg_list_simple_init(&in
->data
);
1162 blobmsg_list_simple_init(&in
->limits
);
1163 blobmsg_list_simple_init(&in
->errors
);
1164 blobmsg_list_simple_init(&in
->jail
.mount
);
1165 in
->valid
= instance_config_parse(in
);
1168 void instance_dump(struct blob_buf
*b
, struct service_instance
*in
, int verbose
)
1175 i
= blobmsg_open_table(b
, in
->name
);
1176 blobmsg_add_u8(b
, "running", in
->proc
.pending
);
1177 if (in
->proc
.pending
)
1178 blobmsg_add_u32(b
, "pid", in
->proc
.pid
);
1180 blobmsg_add_blob(b
, in
->command
);
1181 blobmsg_add_u32(b
, "term_timeout", in
->term_timeout
);
1182 if (!in
->proc
.pending
)
1183 blobmsg_add_u32(b
, "exit_code", in
->exit_code
);
1185 if (!avl_is_empty(&in
->errors
.avl
)) {
1186 struct blobmsg_list_node
*var
;
1187 void *e
= blobmsg_open_array(b
, "errors");
1188 blobmsg_list_for_each(&in
->errors
, var
)
1189 blobmsg_add_string(b
, NULL
, blobmsg_data(var
->data
));
1190 blobmsg_close_table(b
, e
);
1193 if (!avl_is_empty(&in
->env
.avl
)) {
1194 struct blobmsg_list_node
*var
;
1195 void *e
= blobmsg_open_table(b
, "env");
1196 blobmsg_list_for_each(&in
->env
, var
)
1197 blobmsg_add_string(b
, blobmsg_name(var
->data
), blobmsg_data(var
->data
));
1198 blobmsg_close_table(b
, e
);
1201 if (!avl_is_empty(&in
->data
.avl
)) {
1202 struct blobmsg_list_node
*var
;
1203 void *e
= blobmsg_open_table(b
, "data");
1204 blobmsg_list_for_each(&in
->data
, var
)
1205 blobmsg_add_blob(b
, var
->data
);
1206 blobmsg_close_table(b
, e
);
1209 if (!avl_is_empty(&in
->limits
.avl
)) {
1210 struct blobmsg_list_node
*var
;
1211 void *e
= blobmsg_open_table(b
, "limits");
1212 blobmsg_list_for_each(&in
->limits
, var
)
1213 blobmsg_add_string(b
, blobmsg_name(var
->data
), blobmsg_data(var
->data
));
1214 blobmsg_close_table(b
, e
);
1217 if (in
->reload_signal
)
1218 blobmsg_add_u32(b
, "reload_signal", in
->reload_signal
);
1221 void *r
= blobmsg_open_table(b
, "respawn");
1222 blobmsg_add_u32(b
, "threshold", in
->respawn_threshold
);
1223 blobmsg_add_u32(b
, "timeout", in
->respawn_timeout
);
1224 blobmsg_add_u32(b
, "retry", in
->respawn_retry
);
1225 blobmsg_close_table(b
, r
);
1229 blobmsg_add_u8(b
, "trace", true);
1231 if (in
->no_new_privs
)
1232 blobmsg_add_u8(b
, "no_new_privs", true);
1235 blobmsg_add_string(b
, "seccomp", in
->seccomp
);
1238 blobmsg_add_string(b
, "pidfile", in
->pidfile
);
1241 blobmsg_add_string(b
, "user", in
->user
);
1244 blobmsg_add_string(b
, "group", in
->group
);
1247 void *r
= blobmsg_open_table(b
, "jail");
1249 blobmsg_add_string(b
, "name", in
->jail
.name
);
1250 if (in
->jail
.hostname
)
1251 blobmsg_add_string(b
, "hostname", in
->jail
.hostname
);
1252 blobmsg_add_u8(b
, "procfs", in
->jail
.procfs
);
1253 blobmsg_add_u8(b
, "sysfs", in
->jail
.sysfs
);
1254 blobmsg_add_u8(b
, "ubus", in
->jail
.ubus
);
1255 blobmsg_add_u8(b
, "log", in
->jail
.log
);
1256 blobmsg_add_u8(b
, "ronly", in
->jail
.ronly
);
1257 blobmsg_add_u8(b
, "netns", in
->jail
.netns
);
1258 blobmsg_close_table(b
, r
);
1259 if (!avl_is_empty(&in
->jail
.mount
.avl
)) {
1260 struct blobmsg_list_node
*var
;
1261 void *e
= blobmsg_open_table(b
, "mount");
1262 blobmsg_list_for_each(&in
->jail
.mount
, var
)
1263 blobmsg_add_string(b
, blobmsg_name(var
->data
), blobmsg_data(var
->data
));
1264 blobmsg_close_table(b
, e
);
1268 if (verbose
&& in
->trigger
)
1269 blobmsg_add_blob(b
, in
->trigger
);
1271 blobmsg_close_table(b
, i
);