Re: [PATCH v2 10/39] qemuDomainGetHostdevPath: Use more VIR_AUTOFREE/VIR_AUTOPTR

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On 9/26/19 12:12 PM, Michal Privoznik wrote:
> There are several variables which could be automatically freed
> upon return from the function. I'm not changing @tmpPaths (which
> is a string list) because it is going to be removed in next
> commit.
> 
> Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
> ---
>  src/qemu/qemu_domain.c | 18 ++++++------------
>  1 file changed, 6 insertions(+), 12 deletions(-)
> 

With the appropriate GLib adjustments:

Reviewed-by: Cole Robinson <crobinso@xxxxxxxxxx>

I see you've already made adjustments in your branch. If a v3 is coming
then I endorse pushing some of these cleanup pieces out of band, just to
reduce the patch count.

- Cole

> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
> index c903750fa0..d8d2f72bcc 100644
> --- a/src/qemu/qemu_domain.c
> +++ b/src/qemu/qemu_domain.c
> @@ -12866,14 +12866,14 @@ qemuDomainGetHostdevPath(virDomainDefPtr def,
>      virDomainHostdevSubsysSCSIPtr scsisrc = &dev->source.subsys.u.scsi;
>      virDomainHostdevSubsysSCSIVHostPtr hostsrc = &dev->source.subsys.u.scsi_host;
>      virDomainHostdevSubsysMediatedDevPtr mdevsrc = &dev->source.subsys.u.mdev;
> -    virPCIDevicePtr pci = NULL;
> -    virUSBDevicePtr usb = NULL;
> -    virSCSIDevicePtr scsi = NULL;
> -    virSCSIVHostDevicePtr host = NULL;
> -    char *tmpPath = NULL;
> +    VIR_AUTOPTR(virPCIDevice) pci = NULL;
> +    VIR_AUTOPTR(virUSBDevice) usb = NULL;
> +    VIR_AUTOPTR(virSCSIDevice) scsi = NULL;
> +    VIR_AUTOPTR(virSCSIVHostDevice) host = NULL;
> +    VIR_AUTOFREE(char *) tmpPath = NULL;
>      bool includeVFIO = false;
>      char **tmpPaths = NULL;
> -    int *tmpPerms = NULL;
> +    VIR_AUTOFREE(int *) tmpPerms = NULL;
>      size_t tmpNpaths = 0;
>      int perm = 0;
>  
> @@ -13004,12 +13004,6 @@ qemuDomainGetHostdevPath(virDomainDefPtr def,
>      ret = 0;
>   cleanup:
>      virStringListFreeCount(tmpPaths, tmpNpaths);
> -    VIR_FREE(tmpPerms);
> -    virPCIDeviceFree(pci);
> -    virUSBDeviceFree(usb);
> -    virSCSIDeviceFree(scsi);
> -    virSCSIVHostDeviceFree(host);
> -    VIR_FREE(tmpPath);
>      return ret;
>  }
>  
> 


- Cole

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