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security: selinux: Simplify SetImageLabelInternal

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All the SetFileCon calls only differ by the label they pass in.
Rework the conditionals to track what label we need, and use a
single SetFileCon call

Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
This commit is contained in:
Cole Robinson 2019-10-05 10:24:44 -04:00
parent efe3575e60
commit 6f1cd0a54e
1 changed files with 10 additions and 21 deletions
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31
src/security/security_selinux.c
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@ -1824,6 +1824,7 @@ virSecuritySELinuxSetImageLabelInternal(virSecurityManagerPtr mgr,
virSecurityLabelDefPtr secdef;
virSecurityDeviceLabelDefPtr disk_seclabel;
virSecurityDeviceLabelDefPtr parent_seclabel = NULL;
char *use_label = NULL;
bool remember;
int ret;
@ -1858,40 +1859,28 @@ virSecuritySELinuxSetImageLabelInternal(virSecurityManagerPtr mgr,
if (!disk_seclabel->relabel)
return 0;
ret = virSecuritySELinuxSetFilecon(mgr, src->path,
disk_seclabel->label, remember);
use_label = disk_seclabel->label;
} else if (parent_seclabel && (!parent_seclabel->relabel || parent_seclabel->label)) {
if (!parent_seclabel->relabel)
return 0;
ret = virSecuritySELinuxSetFilecon(mgr, src->path,
parent_seclabel->label, remember);
use_label = parent_seclabel->label;
} else if (!parent || parent == src) {
if (src->shared) {
ret = virSecuritySELinuxSetFilecon(mgr,
src->path,
data->file_context,
remember);
use_label = data->file_context;
} else if (src->readonly) {
ret = virSecuritySELinuxSetFilecon(mgr,
src->path,
data->content_context,
remember);
use_label = data->content_context;
} else if (secdef->imagelabel) {
ret = virSecuritySELinuxSetFilecon(mgr,
src->path,
secdef->imagelabel,
remember);
use_label = secdef->imagelabel;
} else {
ret = 0;
return 0;
}
} else {
ret = virSecuritySELinuxSetFilecon(mgr,
src->path,
data->content_context,
remember);
use_label = data->content_context;
}
ret = virSecuritySELinuxSetFilecon(mgr, src->path, use_label, remember);
if (ret == 1 && !disk_seclabel) {
/* If we failed to set a label, but virt_use_nfs let us
* proceed anyway, then we don't need to relabel later. */