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rpcd-mod-lxc: add "info" ubus method (similar to the lxc-info)

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This method allows getting basic info about a queried container. It's
based on the lxc-info command-line tool.

Example output:
> ubus call lxc info '{ "name": "foo" }'
{
        "name": "foo",
        "state": "RUNNING",
        "pid": 2946,
        "ips": [
                "192.168.0.124"
        ]
}

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Approved-by: Luka Perkov <luka@openwrt.org>
This commit is contained in:
Rafał Miłecki
2017-11-07 12:02:53 +01:00
parent 91dc4e824d
commit f2a725ba2d
1 changed files with 43 additions and 0 deletions
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utils/rpcd-mod-lxc/files/lxc.c
+43
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@@ -316,6 +316,48 @@ out:
return rc; return rc;
} }
static int
rpc_lxc_info(struct ubus_context *ctx, struct ubus_object *obj,
struct ubus_request_data *req, const char *method,
struct blob_attr *msg)
{
struct blob_attr *tb[__RPC_LXC_RENAME_MAX];
struct rpc_lxc *l = NULL;
char **addresses;
void *k;
pid_t initpid;
blobmsg_parse(rpc_lxc_min_policy, __RPC_LXC_MAX, tb, blob_data(msg), blob_len(msg));
l = rpc_lxc_init(tb);
if (!l)
return UBUS_STATUS_INVALID_ARGUMENT;
blob_buf_init(&buf, 0);
blobmsg_add_string(&buf, "name", l->container->name);
blobmsg_add_string(&buf, "state", l->container->state(l->container));
initpid = l->container->init_pid(l->container);
if (initpid >= 0)
blobmsg_add_u32(&buf, "pid", initpid);
k = blobmsg_open_array(&buf, "ips");
addresses = l->container->get_ips(l->container, NULL, NULL, 0);
if (addresses) {
int i;
for (i = 0; addresses[i]; i++)
blobmsg_add_string(&buf, "ip", addresses[i]);
}
blobmsg_close_array(&buf, k);
ubus_send_reply(ctx, req, buf.head);
rpc_lxc_done(l);
return UBUS_STATUS_OK;
}
static int static int
rpc_lxc_rename(struct ubus_context *ctx, struct ubus_object *obj, rpc_lxc_rename(struct ubus_context *ctx, struct ubus_object *obj,
struct ubus_request_data *req, const char *method, struct ubus_request_data *req, const char *method,
@@ -480,6 +522,7 @@ rpc_lxc_api_init(const struct rpc_daemon_ops *o, struct ubus_context *ctx)
UBUS_METHOD("stop", rpc_lxc_stop, rpc_lxc_min_policy), UBUS_METHOD("stop", rpc_lxc_stop, rpc_lxc_min_policy),
UBUS_METHOD("freeze", rpc_lxc_freeze, rpc_lxc_min_policy), UBUS_METHOD("freeze", rpc_lxc_freeze, rpc_lxc_min_policy),
UBUS_METHOD("unfreeze", rpc_lxc_unfreeze, rpc_lxc_min_policy), UBUS_METHOD("unfreeze", rpc_lxc_unfreeze, rpc_lxc_min_policy),
UBUS_METHOD("info", rpc_lxc_info, rpc_lxc_min_policy),
UBUS_METHOD("rename", rpc_lxc_rename, rpc_lxc_rename_policy), UBUS_METHOD("rename", rpc_lxc_rename, rpc_lxc_rename_policy),
UBUS_METHOD("create", rpc_lxc_create, rpc_lxc_create_policy), UBUS_METHOD("create", rpc_lxc_create, rpc_lxc_create_policy),
UBUS_METHOD("destroy", rpc_lxc_destroy, rpc_lxc_min_policy), UBUS_METHOD("destroy", rpc_lxc_destroy, rpc_lxc_min_policy),