+/*
+ * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if.h>
#include <unistd.h>
+#include <stdint.h>
+#include <fcntl.h>
#include "procd.h"
#include "service.h"
#include "instance.h"
+#include "md5.h"
enum {
INSTANCE_ATTR_COMMAND,
INSTANCE_ATTR_ENV,
INSTANCE_ATTR_DATA,
+ INSTANCE_ATTR_NETDEV,
+ INSTANCE_ATTR_FILE,
+ INSTANCE_ATTR_TRIGGER,
+ INSTANCE_ATTR_RESPAWN,
+ INSTANCE_ATTR_NICE,
__INSTANCE_ATTR_MAX
};
[INSTANCE_ATTR_COMMAND] = { "command", BLOBMSG_TYPE_ARRAY },
[INSTANCE_ATTR_ENV] = { "env", BLOBMSG_TYPE_TABLE },
[INSTANCE_ATTR_DATA] = { "data", BLOBMSG_TYPE_TABLE },
+ [INSTANCE_ATTR_NETDEV] = { "netdev", BLOBMSG_TYPE_ARRAY },
+ [INSTANCE_ATTR_FILE] = { "file", BLOBMSG_TYPE_ARRAY },
+ [INSTANCE_ATTR_TRIGGER] = { "triggers", BLOBMSG_TYPE_ARRAY },
+ [INSTANCE_ATTR_RESPAWN] = { "respawn", BLOBMSG_TYPE_ARRAY },
+ [INSTANCE_ATTR_NICE] = { "nice", BLOBMSG_TYPE_INT32 },
+};
+
+struct instance_netdev {
+ struct blobmsg_list_node node;
+ int ifindex;
+};
+
+struct instance_file {
+ struct blobmsg_list_node node;
+ uint32_t md5[4];
};
static void
struct blob_attr *cur;
char **argv;
int argc = 1; /* NULL terminated */
- int rem;
+ int rem, fd;
+
+ if (in->nice)
+ setpriority(PRIO_PROCESS, 0, in->nice);
blobmsg_for_each_attr(cur, in->command, rem)
argc++;
blobmsg_list_for_each(&in->env, var)
- putenv(blobmsg_data(var->data));
+ setenv(blobmsg_name(var->data), blobmsg_data(var->data), 1);
argv = alloca(sizeof(char *) * argc);
argc = 0;
argv[argc++] = blobmsg_data(cur);
argv[argc] = NULL;
+ fd = open("/dev/null", O_RDWR);
+ if (fd > -1) {
+ dup2(fd, STDIN_FILENO);
+ dup2(fd, STDOUT_FILENO);
+ dup2(fd, STDERR_FILENO);
+ if (fd > STDERR_FILENO)
+ close(fd);
+ }
execvp(argv[0], argv);
exit(127);
}
return;
in->restart = false;
+ in->halt = !in->respawn;
+
if (!in->valid)
return;
return;
if (!pid) {
+ uloop_done();
instance_run(in);
return;
}
+ DEBUG(1, "Started instance %s::%s\n", in->srv->name, in->name);
in->proc.pid = pid;
+ clock_gettime(CLOCK_MONOTONIC, &in->start);
uloop_process_add(&in->proc);
}
struct service_instance *in;
in = container_of(t, struct service_instance, timeout);
- kill(in->proc.pid, SIGKILL);
- uloop_process_delete(&in->proc);
- in->proc.cb(&in->proc, -1);
+
+ if (!in->halt && (in->restart || in->respawn))
+ instance_start(in);
}
static void
instance_exit(struct uloop_process *p, int ret)
{
struct service_instance *in;
+ struct timespec tp;
+ long runtime;
in = container_of(p, struct service_instance, proc);
+
+ clock_gettime(CLOCK_MONOTONIC, &tp);
+ runtime = tp.tv_sec - in->start.tv_sec;
+
+ DEBUG(1, "Instance %s::%s exit with error code %d after %ld seconds\n", in->srv->name, in->name, ret, runtime);
uloop_timeout_cancel(&in->timeout);
- if (in->restart)
+ if (in->halt) {
+ /* no action */
+ } else if (in->restart) {
instance_start(in);
+ } else if (in->respawn) {
+ if (runtime < in->respawn_threshold)
+ in->respawn_count++;
+ else
+ in->respawn_count = 0;
+ if (in->respawn_count > in->respawn_retry) {
+ LOG("Instance %s::%s s in a crash loop %d crashes, %ld seconds since last crash\n",
+ in->srv->name, in->name, in->respawn_count, runtime);
+ in->restart = in->respawn = 0;
+ in->halt = 1;
+ } else {
+ uloop_timeout_set(&in->timeout, in->respawn_timeout * 1000);
+ }
+ }
}
void
-instance_stop(struct service_instance *in, bool restart)
+instance_stop(struct service_instance *in)
{
if (!in->proc.pending)
return;
+ in->halt = true;
+ in->restart = in->respawn = false;
+ kill(in->proc.pid, SIGTERM);
+}
+static void
+instance_restart(struct service_instance *in)
+{
+ if (!in->proc.pending)
+ return;
+ in->halt = false;
+ in->restart = true;
kill(in->proc.pid, SIGTERM);
}
if (!blobmsg_list_equal(&in->data, &in_new->data))
return true;
+ if (!blobmsg_list_equal(&in->netdev, &in_new->netdev))
+ return true;
+
+ if (!blobmsg_list_equal(&in->file, &in_new->file))
+ return true;
+
+ if (in->nice != in_new->nice)
+ return true;
+
return false;
}
static bool
+instance_netdev_cmp(struct blobmsg_list_node *l1, struct blobmsg_list_node *l2)
+{
+ struct instance_netdev *n1 = container_of(l1, struct instance_netdev, node);
+ struct instance_netdev *n2 = container_of(l2, struct instance_netdev, node);
+
+ return n1->ifindex == n2->ifindex;
+}
+
+static void
+instance_netdev_update(struct blobmsg_list_node *l)
+{
+ struct instance_netdev *n = container_of(l, struct instance_netdev, node);
+
+ n->ifindex = if_nametoindex(n->node.avl.key);
+}
+
+static bool
+instance_file_cmp(struct blobmsg_list_node *l1, struct blobmsg_list_node *l2)
+{
+ struct instance_file *f1 = container_of(l1, struct instance_file, node);
+ struct instance_file *f2 = container_of(l2, struct instance_file, node);
+
+ return !memcmp(f1->md5, f2->md5, sizeof(f1->md5));
+}
+
+static void
+instance_file_update(struct blobmsg_list_node *l)
+{
+ struct instance_file *f = container_of(l, struct instance_file, node);
+ md5_ctx_t md5;
+ char buf[256];
+ int len, fd;
+
+ memset(f->md5, 0, sizeof(f->md5));
+
+ fd = open(l->avl.key, O_RDONLY);
+ if (fd < 0)
+ return;
+
+ md5_begin(&md5);
+ do {
+ len = read(fd, buf, sizeof(buf));
+ if (len < 0) {
+ if (errno == EINTR)
+ continue;
+
+ break;
+ }
+ if (!len)
+ break;
+
+ md5_hash(buf, len, &md5);
+ } while(1);
+
+ md5_end(f->md5, &md5);
+ close(fd);
+}
+
+static bool
+instance_fill_array(struct blobmsg_list *l, struct blob_attr *cur, blobmsg_update_cb cb, bool array)
+{
+ struct blobmsg_list_node *node;
+
+ if (!cur)
+ return true;
+
+ if (!blobmsg_check_attr_list(cur, BLOBMSG_TYPE_STRING))
+ return false;
+
+ blobmsg_list_fill(l, blobmsg_data(cur), blobmsg_data_len(cur), array);
+ if (cb) {
+ blobmsg_list_for_each(l, node)
+ cb(node);
+ }
+ return true;
+}
+
+static bool
instance_config_parse(struct service_instance *in)
{
struct blob_attr *tb[__INSTANCE_ATTR_MAX];
in->command = cur;
- if ((cur = tb[INSTANCE_ATTR_ENV])) {
- if (!blobmsg_check_attr_list(cur, BLOBMSG_TYPE_STRING))
- return false;
- blobmsg_list_fill(&in->env, blobmsg_data(cur), blobmsg_data_len(cur));
+ if (tb[INSTANCE_ATTR_RESPAWN]) {
+ int i = 0;
+ uint32_t vals[3] = { 3600, 5, 5};
+
+ blobmsg_for_each_attr(cur2, tb[INSTANCE_ATTR_RESPAWN], rem) {
+ if ((i >= 3) && (blobmsg_type(cur2) == BLOBMSG_TYPE_STRING))
+ continue;
+ vals[i] = atoi(blobmsg_get_string(cur2));
+ i++;
+ }
+ in->respawn = true;
+ in->respawn_count = 0;
+ in->respawn_threshold = vals[0];
+ in->respawn_timeout = vals[1];
+ in->respawn_retry = vals[2];
+ }
+ if (tb[INSTANCE_ATTR_TRIGGER]) {
+ in->trigger = malloc(blob_pad_len(tb[INSTANCE_ATTR_TRIGGER]));
+ if (!in->trigger)
+ return -1;
+ memcpy(in->trigger, tb[INSTANCE_ATTR_TRIGGER], blob_pad_len(tb[INSTANCE_ATTR_TRIGGER]));
+ trigger_add(in->trigger, in);
}
- if ((cur = tb[INSTANCE_ATTR_DATA])) {
- if (!blobmsg_check_attr_list(cur, BLOBMSG_TYPE_STRING))
+ if ((cur = tb[INSTANCE_ATTR_NICE])) {
+ in->nice = (int8_t) blobmsg_get_u32(cur);
+ if (in->nice < -20 || in->nice > 20)
return false;
- blobmsg_list_fill(&in->data, blobmsg_data(cur), blobmsg_data_len(cur));
}
+ if (!instance_fill_array(&in->env, tb[INSTANCE_ATTR_ENV], NULL, false))
+ return false;
+
+ if (!instance_fill_array(&in->data, tb[INSTANCE_ATTR_DATA], NULL, false))
+ return false;
+
+ if (!instance_fill_array(&in->netdev, tb[INSTANCE_ATTR_NETDEV], instance_netdev_update, true))
+ return false;
+
+ if (!instance_fill_array(&in->file, tb[INSTANCE_ATTR_FILE], instance_file_update, true))
+ return false;
+
return true;
}
{
blobmsg_list_free(&in->env);
blobmsg_list_free(&in->data);
+ blobmsg_list_free(&in->netdev);
}
static void
instance_config_cleanup(in);
blobmsg_list_move(&in->env, &in_src->env);
blobmsg_list_move(&in->data, &in_src->data);
+ blobmsg_list_move(&in->netdev, &in_src->netdev);
+ in->trigger = in_src->trigger;
in->command = in_src->command;
in->name = in_src->name;
+ in->node.avl.key = in_src->node.avl.key;
+
+ free(in->config);
+ in->config = in_src->config;
+ in_src->config = NULL;
}
bool
instance_update(struct service_instance *in, struct service_instance *in_new)
{
bool changed = instance_config_changed(in, in_new);
+ bool running = in->proc.pending;
- in->config = in_new->config;
- if (!changed)
+ if (!changed && running)
return false;
- in->restart = true;
- instance_stop(in, true);
- instance_config_move(in, in_new);
+ if (!running) {
+ if (changed)
+ instance_config_move(in, in_new);
+ instance_start(in);
+ } else {
+ instance_restart(in);
+ instance_config_move(in, in_new);
+ /* restart happens in the child callback handler */
+ }
return true;
}
{
uloop_process_delete(&in->proc);
uloop_timeout_cancel(&in->timeout);
+ trigger_del(in);
+ free(in->trigger);
instance_config_cleanup(in);
+ free(in->config);
free(in);
}
void
-instance_init(struct service_instance *in, struct blob_attr *config)
+instance_init(struct service_instance *in, struct service *s, struct blob_attr *config)
{
+ config = blob_memdup(config);
+ in->srv = s;
in->name = blobmsg_name(config);
in->config = config;
in->timeout.cb = instance_timeout;
in->proc.cb = instance_exit;
+ blobmsg_list_init(&in->netdev, struct instance_netdev, node, instance_netdev_cmp);
+ blobmsg_list_init(&in->file, struct instance_file, node, instance_file_cmp);
blobmsg_list_simple_init(&in->env);
blobmsg_list_simple_init(&in->data);
in->valid = instance_config_parse(in);
}
-void instance_dump(struct blob_buf *b, struct service_instance *in)
+void instance_dump(struct blob_buf *b, struct service_instance *in, int verbose)
{
void *i;
+ struct pid_info pi;
i = blobmsg_open_table(b, in->name);
blobmsg_add_u8(b, "running", in->proc.pending);
if (in->proc.pending)
blobmsg_add_u32(b, "pid", in->proc.pid);
blobmsg_add_blob(b, in->command);
+
+ if (!avl_is_empty(&in->env.avl)) {
+ struct blobmsg_list_node *var;
+ void *e = blobmsg_open_table(b, "env");
+ blobmsg_list_for_each(&in->env, var)
+ blobmsg_add_string(b, blobmsg_name(var->data), blobmsg_data(var->data));
+ blobmsg_close_table(b, e);
+ }
+
+ if (in->respawn) {
+ void *r = blobmsg_open_table(b, "respawn");
+ blobmsg_add_u32(b, "timeout", in->respawn_timeout);
+ blobmsg_add_u32(b, "threshold", in->respawn_threshold);
+ blobmsg_add_u32(b, "retry", in->respawn_retry);
+ blobmsg_close_table(b, r);
+ }
+
+ if (verbose && in->trigger)
+ blobmsg_add_blob(b, in->trigger);
+ if (!measure_process(in->proc.pid, &pi)) {
+ struct timespec tp;
+ long uptime;
+
+ clock_gettime(CLOCK_MONOTONIC, &tp);
+ uptime = tp.tv_sec - in->start.tv_sec;
+
+ blobmsg_add_u8(b, "ppid", pi.ppid);
+ blobmsg_add_u16(b, "uid", pi.uid);
+ blobmsg_add_u32(b, "fdcount", pi.fdcount);
+ blobmsg_add_u32(b, "vmsize", pi.vmsize);
+ blobmsg_add_u32(b, "uptime", uptime);
+ }
blobmsg_close_table(b, i);
}
projects / project / procd.git / blobdiff