i am reading source code, begin with tracing simple command line ,like virsh list and forth.

please look at my qurestions

1.how libvirt communicate with qemu?

call qemu'lib or open special device/socket?

 

2. i do not find the implement of function qemuAgentOpen---->qemuAgentInitialize().

i also search qemu-kvm source

 

3. qemuListAllDomains  is the function which corespond to virsh-list.   please explain this function .

 virDomainList(conn, driver->domains.objs, domains, flags);

 i) it seems driver->domains.objs  have gotten all dmains.   so when and where   driver->domains.objs   is  assigned.

ii)and what is conn,and its definition?

 

thanks.