fix duplicate bridge addif
[project/netifd.git] / proto-shell.c
index 9ad28ac..fc16f76 100644 (file)
@@ -42,6 +42,7 @@ struct proto_shell_state {
        bool teardown_wait_task;
 
        struct netifd_process proto_task;
+       int last_error;
 };
 
 static int
@@ -51,10 +52,12 @@ proto_shell_handler(struct interface_proto_state *proto,
        struct proto_shell_state *state;
        struct proto_shell_handler *handler;
        struct netifd_process *proc;
-       const char *argv[6];
+       static char error_buf[32];
+       const char *argv[7];
+       char *envp[2];
        const char *action;
        char *config;
-       int ret, i = 0;
+       int ret, i = 0, j = 0;
 
        state = container_of(proto, struct proto_shell_state, proto);
        handler = state->handler;
@@ -62,6 +65,7 @@ proto_shell_handler(struct interface_proto_state *proto,
        if (cmd == PROTO_CMD_SETUP) {
                action = "setup";
                proc = &state->setup_task;
+               state->last_error = -1;
        } else {
                action = "teardown";
                proc = &state->teardown_task;
@@ -71,6 +75,10 @@ proto_shell_handler(struct interface_proto_state *proto,
                        state->teardown_pending = true;
                        return 0;
                }
+               if (state->last_error >= 0) {
+                       snprintf(error_buf, sizeof(error_buf), "ERROR=%d", state->last_error);
+                       envp[j++] = error_buf;
+               }
        }
 
        config = blobmsg_format_json(state->config, true);
@@ -85,8 +93,9 @@ proto_shell_handler(struct interface_proto_state *proto,
        if (proto->iface->main_dev.dev)
                argv[i++] = proto->iface->main_dev.dev->ifname;
        argv[i] = NULL;
+       envp[j] = NULL;
 
-       ret = netifd_start_process(argv, NULL, proc);
+       ret = netifd_start_process(argv, envp, proc);
        free(config);
 
        return ret;
@@ -146,6 +155,7 @@ proto_shell_task_cb(struct netifd_process *p, int ret)
                return;
        }
 
+       state->last_error = ret;
        state->proto.proto_event(&state->proto, IFPEV_LINK_LOST);
        proto_shell_handler(&state->proto, PROTO_CMD_TEARDOWN, false);
 }
@@ -206,6 +216,7 @@ proto_shell_parse_route_list(struct interface *iface, struct blob_attr *attr,
 
 enum {
        NOTIFY_ACTION,
+       NOTIFY_ERROR,
        NOTIFY_COMMAND,
        NOTIFY_ENV,
        NOTIFY_SIGNAL,
@@ -223,6 +234,7 @@ enum {
 
 static const struct blobmsg_policy notify_attr[__NOTIFY_LAST] = {
        [NOTIFY_ACTION] = { .name = "action", .type = BLOBMSG_TYPE_INT32 },
+       [NOTIFY_ERROR] = { .name = "error", .type = BLOBMSG_TYPE_ARRAY },
        [NOTIFY_COMMAND] = { .name = "command", .type = BLOBMSG_TYPE_ARRAY },
        [NOTIFY_ENV] = { .name = "env", .type = BLOBMSG_TYPE_ARRAY },
        [NOTIFY_SIGNAL] = { .name = "signal", .type = BLOBMSG_TYPE_INT32 },
@@ -242,6 +254,7 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
 {
        struct interface_ip_settings *ip;
        struct blob_attr *cur;
+       int dev_create = 1;
        bool addr_ext = false;
        bool up;
 
@@ -254,6 +267,12 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
                return 0;
        }
 
+       if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL) {
+               addr_ext = blobmsg_get_bool(cur);
+               if (addr_ext)
+                       dev_create = 2;
+       }
+
        if (!tb[NOTIFY_IFNAME]) {
                if (!state->proto.iface->main_dev.dev)
                        return UBUS_STATUS_INVALID_ARGUMENT;
@@ -262,7 +281,7 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
                        device_remove_user(&state->l3_dev);
 
                device_add_user(&state->l3_dev,
-                       device_get(blobmsg_data(tb[NOTIFY_IFNAME]), true));
+                       device_get(blobmsg_data(tb[NOTIFY_IFNAME]), dev_create));
                state->proto.iface->l3_dev = &state->l3_dev;
                device_claim(&state->l3_dev);
        }
@@ -270,9 +289,6 @@ proto_shell_update_link(struct proto_shell_state *state, struct blob_attr **tb)
        ip = &state->proto.iface->proto_ip;
        interface_update_start(state->proto.iface);
 
-       if ((cur = tb[NOTIFY_ADDR_EXT]) != NULL)
-               addr_ext = blobmsg_get_bool(cur);
-
        if ((cur = tb[NOTIFY_IPADDR]) != NULL)
                proto_shell_parse_addr_list(ip, cur, false, addr_ext);
 
@@ -328,8 +344,8 @@ out:
 static int
 proto_shell_run_command(struct proto_shell_state *state, struct blob_attr **tb)
 {
-       char *argv[64];
-       char *env[32];
+       static char *argv[64];
+       static char *env[32];
 
        if (!tb[NOTIFY_COMMAND])
                goto error;
@@ -368,6 +384,49 @@ proto_shell_kill_command(struct proto_shell_state *state, struct blob_attr **tb)
 }
 
 static int
+proto_shell_notify_error(struct proto_shell_state *state, struct blob_attr **tb)
+{
+       struct blob_attr *cur;
+       char *data[16];
+       int n_data = 0;
+       int rem;
+
+       if (!tb[NOTIFY_ERROR])
+               return UBUS_STATUS_INVALID_ARGUMENT;
+
+       blobmsg_for_each_attr(cur, tb[NOTIFY_ERROR], rem) {
+               if (n_data + 1 == ARRAY_SIZE(data))
+                       goto error;
+
+               if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+                       goto error;
+
+               if (!blobmsg_check_attr(cur, NULL))
+                       goto error;
+
+               data[n_data++] = blobmsg_data(cur);
+       }
+
+       if (!n_data)
+               goto error;
+
+       interface_add_error(state->proto.iface, state->handler->proto.name,
+                       data[0], (const char **) &data[1], n_data - 1);
+
+       return 0;
+
+error:
+       return UBUS_STATUS_INVALID_ARGUMENT;
+}
+
+static int
+proto_shell_block_restart(struct proto_shell_state *state, struct blob_attr **tb)
+{
+       state->proto.iface->autostart = false;
+       return 0;
+}
+
+static int
 proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
 {
        struct proto_shell_state *state;
@@ -386,6 +445,10 @@ proto_shell_notify(struct interface_proto_state *proto, struct blob_attr *attr)
                return proto_shell_run_command(state, tb);
        case 2:
                return proto_shell_kill_command(state, tb);
+       case 3:
+               return proto_shell_notify_error(state, tb);
+       case 4:
+               return proto_shell_block_restart(state, tb);
        default:
                return UBUS_STATUS_INVALID_ARGUMENT;
        }
@@ -551,9 +614,9 @@ static void proto_shell_add_script(const char *name)
        struct json_tokener *tok = NULL;
        json_object *obj;
        static char buf[512];
-       char *start, *end, *cmd;
+       char *start, *cmd;
        FILE *f;
-       int buflen, len;
+       int len;
 
 #define DUMP_SUFFIX    " '' dump"
 
@@ -565,33 +628,25 @@ static void proto_shell_add_script(const char *name)
                return;
 
        do {
-               buflen = fread(buf, 1, sizeof(buf) - 1, f);
-               if (buflen <= 0)
+               start = fgets(buf, sizeof(buf), f);
+               if (!start)
                        continue;
 
-               start = buf;
-               len = buflen;
-               do {
-                       end = memchr(start, '\n', len);
-                       if (end)
-                               len = end - start;
-
-                       if (!tok)
-                               tok = json_tokener_new();
-
-                       obj = json_tokener_parse_ex(tok, start, len);
-                       if (!is_error(obj)) {
-                               proto_shell_add_handler(name, obj);
-                               json_object_put(obj);
-                               json_tokener_free(tok);
-                               tok = NULL;
-                       }
-
-                       if (end) {
-                               start = end + 1;
-                               len = buflen - (start - buf);
-                       }
-               } while (len > 0);
+               len = strlen(start);
+
+               if (!tok)
+                       tok = json_tokener_new();
+
+               obj = json_tokener_parse_ex(tok, start, len);
+               if (!is_error(obj)) {
+                       proto_shell_add_handler(name, obj);
+                       json_object_put(obj);
+                       json_tokener_free(tok);
+                       tok = NULL;
+               } else if (start[len - 1] == '\n') {
+                       json_tokener_free(tok);
+                       tok = NULL;
+               }
        } while (!feof(f) && !ferror(f));
 
        if (tok)