Re: [libvirt] [PATCH] apparmor: avoid copying empty profile name
On 9/9/19 6:26 PM, Jim Fehlig wrote: AppArmorGetSecurityProcessLabel copies the VM's profile name to the label member of virSecurityLabel struct. If the profile is not loaded, the name is set empty before calling virStrcpy to copy it. However, virStrcpy will fail if src is empty (0 length), causing AppArmorGetSecurityProcessLabel to needlessly fail. Simple operations that report security driver information will subsequently fail virsh dominfo test Id: 248 Name: test ... Security model: apparmor Security DOI: 0 error: internal error: error copying profile name Avoid copying an empty profile name when the profile is not loaded. Signed-off-by: Jim Fehlig --- src/security/security_apparmor.c | 15 +++ 1 file changed, 7 insertions(+), 8 deletions(-) Reviewed-by: Michal Privoznik Michal -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [PATCH] apparmor: avoid copying empty profile name
On 9/9/19 10:26 AM, Jim Fehlig wrote: > AppArmorGetSecurityProcessLabel copies the VM's profile name to the > label member of virSecurityLabel struct. If the profile is not loaded, > the name is set empty before calling virStrcpy to copy it. However, > virStrcpy will fail if src is empty (0 length), causing > AppArmorGetSecurityProcessLabel to needlessly fail. Simple operations > that report security driver information will subsequently fail > > virsh dominfo test > Id: 248 > Name: test > ... > Security model: apparmor > Security DOI: 0 > error: internal error: error copying profile name > > Avoid copying an empty profile name when the profile is not loaded. Any comments on this patch? There are a lot of ways to skin the cat, but I think we can agree that copying an empty profile name should be avoided. Regards, Jim > > Signed-off-by: Jim Fehlig > --- > src/security/security_apparmor.c | 15 +++ > 1 file changed, 7 insertions(+), 8 deletions(-) > > diff --git a/src/security/security_apparmor.c > b/src/security/security_apparmor.c > index 6d16b15c65..77eee9410c 100644 > --- a/src/security/security_apparmor.c > +++ b/src/security/security_apparmor.c > @@ -525,14 +525,13 @@ AppArmorGetSecurityProcessLabel(virSecurityManagerPtr > mgr ATTRIBUTE_UNUSED, > "%s", _("error getting profile status")); > goto cleanup; > } else if (status == -1) { > -profile_name[0] = '\0'; > -} > - > -if (virStrcpy(sec->label, profile_name, > -VIR_SECURITY_LABEL_BUFLEN) < 0) { > -virReportError(VIR_ERR_INTERNAL_ERROR, > - "%s", _("error copying profile name")); > -goto cleanup; > +sec->label[0] = '\0'; > +} else { > +if (virStrcpy(sec->label, profile_name, VIR_SECURITY_LABEL_BUFLEN) < > 0) { > +virReportError(VIR_ERR_INTERNAL_ERROR, > + "%s", _("error copying profile name")); > +goto cleanup; > +} > } > > sec->enforcing = status == 1; > -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
[libvirt] [PATCH] apparmor: avoid copying empty profile name
AppArmorGetSecurityProcessLabel copies the VM's profile name to the label member of virSecurityLabel struct. If the profile is not loaded, the name is set empty before calling virStrcpy to copy it. However, virStrcpy will fail if src is empty (0 length), causing AppArmorGetSecurityProcessLabel to needlessly fail. Simple operations that report security driver information will subsequently fail virsh dominfo test Id: 248 Name: test ... Security model: apparmor Security DOI: 0 error: internal error: error copying profile name Avoid copying an empty profile name when the profile is not loaded. Signed-off-by: Jim Fehlig --- src/security/security_apparmor.c | 15 +++ 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/src/security/security_apparmor.c b/src/security/security_apparmor.c index 6d16b15c65..77eee9410c 100644 --- a/src/security/security_apparmor.c +++ b/src/security/security_apparmor.c @@ -525,14 +525,13 @@ AppArmorGetSecurityProcessLabel(virSecurityManagerPtr mgr ATTRIBUTE_UNUSED, "%s", _("error getting profile status")); goto cleanup; } else if (status == -1) { -profile_name[0] = '\0'; -} - -if (virStrcpy(sec->label, profile_name, -VIR_SECURITY_LABEL_BUFLEN) < 0) { -virReportError(VIR_ERR_INTERNAL_ERROR, - "%s", _("error copying profile name")); -goto cleanup; +sec->label[0] = '\0'; +} else { +if (virStrcpy(sec->label, profile_name, VIR_SECURITY_LABEL_BUFLEN) < 0) { +virReportError(VIR_ERR_INTERNAL_ERROR, + "%s", _("error copying profile name")); +goto cleanup; +} } sec->enforcing = status == 1; -- 2.23.0 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list