ubus's Introduction

ubus

libubus wrapper

prerequsites

libubox: https://git.openwrt.org/project/libubox.git
ubus: https://git.openwrt.org/project/ubus.git

build

libubus and libubox could be found by default flags

go build

CGO_ENABLED is set by default for most goarch and goos, in that case, you can check the default configuration by go env, if CGO_ENABLED is not set, you need build with:

CGO_ENABLED=1 go build
custom location for libubus and libubox

CGO_ENABLED=1 CGO_CFLAGS=-I/path/to/header/dir CGO_LDFLAGS=-L/path/to/lib/dir go build

if you need cross compile for other architecture:

CC=/path/to/compiler ...

e.g.: to cross compile for openwrt running on MIPS:

CC=mips-openwrt-linux-gcc CGO_ENABLED=1 \
CGO_LDFLAGS="-L/opt/packages/lede_repo/lede/staging_dir/target-mips_musl/usr/lib" \
CGO_CFLAGS="-I/opt/packages/lede_repo/lede/staging_dir/target-mips_musl/usr/include"\
GOARCH=mips go build

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ubus's Issues

Socket leak

Hi there,

There seems to be a socket leak in this library. I created an example file and just ran the following code in a loop:

raw, err := ubus.Call("uci", "get", params, ubus.DefaultInvokeTimeout)
if err != nil {
    log.Println("ubus.Call err")
    panic(err)
}
        
log.Printf(string(raw))

When I use lsof to check the number of socket connections the Linux system is maintaining, I see that it increases pretty steadily:

...
6082    /root/ubus-test socket:[111485]
6082    /root/ubus-test socket:[111492]
6082    /root/ubus-test socket:[111495]
6082    /root/ubus-test socket:[111496]
6082    /root/ubus-test socket:[111511]
6082    /root/ubus-test socket:[111514]
...

Whereas if I use os.exec to run the same uci get function, the lsof count stays constant.

Please help!

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