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 <jfehlig(a)suse.com>
---
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;