Re: libvirt question

["zhunxun@xxxxxxxxx" <zhunxun@xxxxxxxxx>]

Thanks a lot!

---

zhunxun@xxxxxxxxx

 

From: Martin Kletzander

Date: 2017-05-19 14:16

To: zhunxun@xxxxxxxxx

CC: libvir-list

Subject: Re: libvirt question

On Fri, May 19, 2017 at 10:52:32AM +0800, zhunxun@xxxxxxxxx wrote:

>Hello，I wrote a program using libvirt API to get vm information like this:

>/*dom  is virDomainPtr type*/

>dom=virDomainLookupByID(conn,activeDomains[i]);

>if(dom!=NULL)

>    printf("%d    ----------%s\n",activeDomains[i],dom->name);

>......

>but when compile it,error occured like this:

>vm_eraser_detect.c:125:54: error: dereferencing pointer to incomplete type

>    printf("%d    ----------%s\n",activeDomains[i],dom->name);

>what is the reason of it???

>thanka a lot!

>

 

TL;DR s/dom->name/virDomainGetName(dom)/

 

Explanation:

Where did you get the idea that virDomainPtr has a name in it?  Is that

in some of our documentation?  Even if you saw it in the sources, the

compiler has no way of knowing that because you haven't included that

structure definition anywhere.  That's because we don't expose it in any

public header files.  That way we can change it at any point in the

future.  And for callers to access it, we just expose a function to get

the name.

 

>

>zhunxun@xxxxxxxxx

 

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