X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fprocd.git;a=blobdiff_plain;f=instance.c;h=b5ecad07bced86e358f21085e7ecb63f5c3d2923;hp=70380afab97c66b7430197f7107cfaa40069707c;hb=3283d681f9da65b500ad0cb3d4550cb840ed481a;hpb=d6d146f34dfaf47a34a8fd4343a5d33ec0f8c6ee diff --git a/instance.c b/instance.c index 70380af..b5ecad0 100644 --- a/instance.c +++ b/instance.c @@ -1,17 +1,38 @@ +/* + * Copyright (C) 2013 Felix Fietkau + * Copyright (C) 2013 John Crispin + * + * 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 #include #include #include #include +#include +#include #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_NICE, __INSTANCE_ATTR_MAX }; @@ -20,6 +41,9 @@ static const struct blobmsg_policy instance_attr[__INSTANCE_ATTR_MAX] = { [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_NICE] = { "nice", BLOBMSG_TYPE_INT32 }, }; struct instance_netdev { @@ -27,6 +51,11 @@ struct instance_netdev { int ifindex; }; +struct instance_file { + struct blobmsg_list_node node; + uint32_t md5[4]; +}; + static void instance_run(struct service_instance *in) { @@ -36,6 +65,9 @@ instance_run(struct service_instance *in) int argc = 1; /* NULL terminated */ int rem; + if (in->nice) + setpriority(PRIO_PROCESS, 0, in->nice); + blobmsg_for_each_attr(cur, in->command, rem) argc++; @@ -74,7 +106,7 @@ instance_start(struct service_instance *in) return; } - DPRINTF("Started instance %s::%s\n", in->srv->name, in->name); + DEBUG(1, "Started instance %s::%s\n", in->srv->name, in->name); in->proc.pid = pid; uloop_process_add(&in->proc); } @@ -96,7 +128,7 @@ instance_exit(struct uloop_process *p, int ret) struct service_instance *in; in = container_of(p, struct service_instance, proc); - DPRINTF("Instance %s::%s exit with error code %d\n", in->srv->name, in->name, ret); + DEBUG(1, "Instance %s::%s exit with error code %d\n", in->srv->name, in->name, ret); uloop_timeout_cancel(&in->timeout); if (in->restart) instance_start(in); @@ -129,6 +161,12 @@ instance_config_changed(struct service_instance *in, struct service_instance *in 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; } @@ -150,6 +188,67 @@ instance_netdev_update(struct blobmsg_list_node *l) } 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]; @@ -175,31 +274,28 @@ instance_config_parse(struct service_instance *in) return false; in->command = cur; + in->trigger = tb[INSTANCE_ATTR_TRIGGER]; - 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), false); + if (in->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), false); } - if ((cur = tb[INSTANCE_ATTR_NETDEV])) { - struct blobmsg_list_node *ndev; + if (!instance_fill_array(&in->env, tb[INSTANCE_ATTR_ENV], NULL, false)) + return false; - if (!blobmsg_check_attr_list(cur, BLOBMSG_TYPE_STRING)) - return false; + if (!instance_fill_array(&in->data, tb[INSTANCE_ATTR_DATA], NULL, false)) + return false; - blobmsg_list_fill(&in->netdev, blobmsg_data(cur), blobmsg_data_len(cur), true); - blobmsg_list_for_each(&in->netdev, ndev) - instance_netdev_update(ndev); - } + 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; } @@ -219,9 +315,12 @@ instance_config_move(struct service_instance *in, struct service_instance *in_sr 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; } @@ -230,13 +329,20 @@ 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; - 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 { + in->restart = true; + instance_stop(in, true); + instance_config_move(in, in_new); + } return true; } @@ -245,6 +351,7 @@ instance_free(struct service_instance *in) { uloop_process_delete(&in->proc); uloop_timeout_cancel(&in->timeout); + trigger_del(in); instance_config_cleanup(in); free(in->config); free(in); @@ -261,12 +368,13 @@ instance_init(struct service_instance *in, struct service *s, struct blob_attr * 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; @@ -275,5 +383,7 @@ void instance_dump(struct blob_buf *b, struct service_instance *in) if (in->proc.pending) blobmsg_add_u32(b, "pid", in->proc.pid); blobmsg_add_blob(b, in->command); + if (verbose && in->trigger) + blobmsg_add_blob(b, in->trigger); blobmsg_close_table(b, i); }