Currently, the DAC security driver passes callback data as
void params[2];
params[0] = mgr;
params[1] = def;
Clean this up by defining a structure for passing the callback
data. Moreover, there's no need to pass the whole virDomainDef
in the callback as the only thing needed in the callbacks is
virSecurityLabelDefPtr.
Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx>
---
src/security/security_dac.c | 147 ++++++++++++++++++++++----------------------
1 file changed, 75 insertions(+), 72 deletions(-)
diff --git a/src/security/security_dac.c b/src/security/security_dac.c
index 28ffbdb..2928c1d 100644
--- a/src/security/security_dac.c
+++ b/src/security/security_dac.c
@@ -53,6 +53,14 @@ struct _virSecurityDACData {
char *baselabel;
};
+typedef struct _virSecurityDACCallbackData virSecurityDACCallbackData;
+typedef virSecurityDACCallbackData *virSecurityDACCallbackDataPtr;
+
+struct _virSecurityDACCallbackData {
+ virSecurityManagerPtr manager;
+ virSecurityLabelDefPtr secdef;
+};
+
/* returns -1 on error, 0 on success */
int
virSecurityDACSetUserAndGroup(virSecurityManagerPtr mgr,
@@ -82,19 +90,12 @@ virSecurityDACSetDynamicOwnership(virSecurityManagerPtr mgr,
/* returns 1 if label isn't found, 0 on success, -1 on error */
static int
ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
-virSecurityDACParseIds(virDomainDefPtr def, uid_t *uidPtr, gid_t *gidPtr)
+virSecurityDACParseIds(virSecurityLabelDefPtr seclabel,
+ uid_t *uidPtr, gid_t *gidPtr)
{
- virSecurityLabelDefPtr seclabel;
-
- if (def == NULL)
+ if (!seclabel || !seclabel->label)
return 1;
- seclabel = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
- if (seclabel == NULL || seclabel->label == NULL) {
- VIR_DEBUG("DAC seclabel for domain '%s' wasn't found", def->name);
- return 1;
- }
-
if (virParseOwnershipIds(seclabel->label, uidPtr, gidPtr) < 0)
return -1;
@@ -103,31 +104,24 @@ virSecurityDACParseIds(virDomainDefPtr def, uid_t *uidPtr, gid_t *gidPtr)
static int
ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4)
-virSecurityDACGetIds(virDomainDefPtr def, virSecurityDACDataPtr priv,
+virSecurityDACGetIds(virSecurityLabelDefPtr seclabel,
+ virSecurityDACDataPtr priv,
uid_t *uidPtr, gid_t *gidPtr,
gid_t **groups, int *ngroups)
{
int ret;
- if (!def && !priv) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Failed to determine default DAC seclabel "
- "for an unknown object"));
- return -1;
- }
-
if (groups)
*groups = priv ? priv->groups : NULL;
if (ngroups)
*ngroups = priv ? priv->ngroups : 0;
- if ((ret = virSecurityDACParseIds(def, uidPtr, gidPtr)) <= 0)
+ if ((ret = virSecurityDACParseIds(seclabel, uidPtr, gidPtr)) <= 0)
return ret;
if (!priv) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("DAC seclabel couldn't be determined "
- "for domain '%s'"), def->name);
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("DAC seclabel couldn't be determined"));
return -1;
}
@@ -141,20 +135,12 @@ virSecurityDACGetIds(virDomainDefPtr def, virSecurityDACDataPtr priv,
/* returns 1 if label isn't found, 0 on success, -1 on error */
static int
ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3)
-virSecurityDACParseImageIds(virDomainDefPtr def,
+virSecurityDACParseImageIds(virSecurityLabelDefPtr seclabel,
uid_t *uidPtr, gid_t *gidPtr)
{
- virSecurityLabelDefPtr seclabel;
-
- if (def == NULL)
+ if (!seclabel || !seclabel->imagelabel)
return 1;
- seclabel = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
- if (seclabel == NULL || seclabel->imagelabel == NULL) {
- VIR_DEBUG("DAC imagelabel for domain '%s' wasn't found", def->name);
- return 1;
- }
-
if (virParseOwnershipIds(seclabel->imagelabel, uidPtr, gidPtr) < 0)
return -1;
@@ -163,25 +149,18 @@ virSecurityDACParseImageIds(virDomainDefPtr def,
static int
ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4)
-virSecurityDACGetImageIds(virDomainDefPtr def, virSecurityDACDataPtr priv,
+virSecurityDACGetImageIds(virSecurityLabelDefPtr seclabel,
+ virSecurityDACDataPtr priv,
uid_t *uidPtr, gid_t *gidPtr)
{
int ret;
- if (!def && !priv) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Failed to determine default DAC imagelabel "
- "for an unknown object"));
- return -1;
- }
-
- if ((ret = virSecurityDACParseImageIds(def, uidPtr, gidPtr)) <= 0)
+ if ((ret = virSecurityDACParseImageIds(seclabel, uidPtr, gidPtr)) <= 0)
return ret;
if (!priv) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("DAC imagelabel couldn't be determined "
- "for domain '%s'"), def->name);
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("DAC imagelabel couldn't be determined"));
return -1;
}
@@ -315,14 +294,14 @@ virSecurityDACSetSecurityFileLabel(virDomainDiskDefPtr disk ATTRIBUTE_UNUSED,
size_t depth ATTRIBUTE_UNUSED,
void *opaque)
{
- void **params = opaque;
- virSecurityManagerPtr mgr = params[0];
- virDomainDefPtr def = params[1];
+ virSecurityDACCallbackDataPtr cbdata = opaque;
+ virSecurityManagerPtr mgr = cbdata->manager;
+ virSecurityLabelDefPtr secdef = cbdata->secdef;
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
uid_t user;
gid_t group;
- if (virSecurityDACGetImageIds(def, priv, &user, &group))
+ if (virSecurityDACGetImageIds(secdef, priv, &user, &group))
return -1;
return virSecurityDACSetOwnership(path, user, group);
@@ -335,8 +314,9 @@ virSecurityDACSetSecurityImageLabel(virSecurityManagerPtr mgr,
virDomainDiskDefPtr disk)
{
- void *params[2];
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
+ virSecurityDACCallbackData cbdata;
+ virSecurityLabelDefPtr secdef;
if (!priv->dynamicOwnership)
return 0;
@@ -344,12 +324,14 @@ virSecurityDACSetSecurityImageLabel(virSecurityManagerPtr mgr,
if (virDomainDiskGetType(disk) == VIR_STORAGE_TYPE_NETWORK)
return 0;
- params[0] = mgr;
- params[1] = def;
+ secdef = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
+
+ cbdata.manager = mgr;
+ cbdata.secdef = secdef;
return virDomainDiskDefForeachPath(disk,
false,
virSecurityDACSetSecurityFileLabel,
- params);
+ &cbdata);
}
@@ -415,14 +397,14 @@ static int
virSecurityDACSetSecurityHostdevLabelHelper(const char *file,
void *opaque)
{
- void **params = opaque;
- virSecurityManagerPtr mgr = params[0];
- virDomainDefPtr def = params[1];
+ virSecurityDACCallbackDataPtr cbdata = opaque;
+ virSecurityManagerPtr mgr = cbdata->manager;
+ virSecurityLabelDefPtr secdef = cbdata->secdef;
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
uid_t user;
gid_t group;
- if (virSecurityDACGetIds(def, priv, &user, &group, NULL, NULL))
+ if (virSecurityDACGetIds(secdef, priv, &user, &group, NULL, NULL))
return -1;
return virSecurityDACSetOwnership(file, user, group);
@@ -462,8 +444,8 @@ virSecurityDACSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
virDomainHostdevDefPtr dev,
const char *vroot)
{
- void *params[] = {mgr, def};
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
+ virSecurityDACCallbackData cbdata;
int ret = -1;
if (!priv->dynamicOwnership)
@@ -472,6 +454,9 @@ virSecurityDACSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
if (dev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS)
return 0;
+ cbdata.manager = mgr;
+ cbdata.secdef = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
+
switch ((enum virDomainHostdevSubsysType) dev->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB: {
virUSBDevicePtr usb;
@@ -485,8 +470,9 @@ virSecurityDACSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
if (!usb)
goto done;
- ret = virUSBDeviceFileIterate(usb, virSecurityDACSetSecurityUSBLabel,
- params);
+ ret = virUSBDeviceFileIterate(usb,
+ virSecurityDACSetSecurityUSBLabel,
+ &cbdata);
virUSBDeviceFree(usb);
break;
}
@@ -509,11 +495,12 @@ virSecurityDACSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
virPCIDeviceFree(pci);
goto done;
}
- ret = virSecurityDACSetSecurityPCILabel(pci, vfioGroupDev, params);
+ ret = virSecurityDACSetSecurityPCILabel(pci, vfioGroupDev, &cbdata);
VIR_FREE(vfioGroupDev);
} else {
- ret = virPCIDeviceFileIterate(pci, virSecurityDACSetSecurityPCILabel,
- params);
+ ret = virPCIDeviceFileIterate(pci,
+ virSecurityDACSetSecurityPCILabel,
+ &cbdata);
}
virPCIDeviceFree(pci);
@@ -533,8 +520,9 @@ virSecurityDACSetSecurityHostdevLabel(virSecurityManagerPtr mgr,
if (!scsi)
goto done;
- ret = virSCSIDeviceFileIterate(scsi, virSecurityDACSetSecuritySCSILabel,
- params);
+ ret = virSCSIDeviceFileIterate(scsi,
+ virSecurityDACSetSecuritySCSILabel,
+ &cbdata);
virSCSIDeviceFree(scsi);
break;
@@ -675,12 +663,15 @@ virSecurityDACSetChardevLabel(virSecurityManagerPtr mgr,
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
+ virSecurityLabelDefPtr seclabel;
char *in = NULL, *out = NULL;
int ret = -1;
uid_t user;
gid_t group;
- if (virSecurityDACGetIds(def, priv, &user, &group, NULL, NULL))
+ seclabel = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
+
+ if (virSecurityDACGetIds(seclabel, priv, &user, &group, NULL, NULL))
return -1;
switch ((enum virDomainChrType) dev->type) {
@@ -902,6 +893,7 @@ virSecurityDACSetSecurityAllLabel(virSecurityManagerPtr mgr,
const char *stdin_path ATTRIBUTE_UNUSED)
{
virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
+ virSecurityLabelDefPtr secdef;
size_t i;
uid_t user;
gid_t group;
@@ -909,6 +901,8 @@ virSecurityDACSetSecurityAllLabel(virSecurityManagerPtr mgr,
if (!priv->dynamicOwnership)
return 0;
+ secdef = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
+
for (i = 0; i < def->ndisks; i++) {
/* XXX fixme - we need to recursively label the entire tree :-( */
if (virDomainDiskGetType(def->disks[i]) == VIR_STORAGE_TYPE_DIR)
@@ -939,7 +933,7 @@ virSecurityDACSetSecurityAllLabel(virSecurityManagerPtr mgr,
return -1;
}
- if (virSecurityDACGetImageIds(def, priv, &user, &group))
+ if (virSecurityDACGetImageIds(secdef, priv, &user, &group))
return -1;
if (def->os.kernel &&
@@ -963,11 +957,14 @@ virSecurityDACSetSavedStateLabel(virSecurityManagerPtr mgr,
virDomainDefPtr def,
const char *savefile)
{
+ virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
+ virSecurityLabelDefPtr secdef;
uid_t user;
gid_t group;
- virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
- if (virSecurityDACGetImageIds(def, priv, &user, &group))
+ secdef = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
+
+ if (virSecurityDACGetImageIds(secdef, priv, &user, &group) < 0)
return -1;
return virSecurityDACSetOwnership(savefile, user, group);
@@ -992,13 +989,16 @@ static int
virSecurityDACSetProcessLabel(virSecurityManagerPtr mgr,
virDomainDefPtr def)
{
+ virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
+ virSecurityLabelDefPtr secdef;
uid_t user;
gid_t group;
gid_t *groups;
int ngroups;
- virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
- if (virSecurityDACGetIds(def, priv, &user, &group, &groups, &ngroups))
+ secdef = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
+
+ if (virSecurityDACGetIds(secdef, priv, &user, &group, &groups, &ngroups) < 0)
return -1;
VIR_DEBUG("Dropping privileges of DEF to %u:%u, %d supplemental groups",
@@ -1016,11 +1016,14 @@ virSecurityDACSetChildProcessLabel(virSecurityManagerPtr mgr,
virDomainDefPtr def,
virCommandPtr cmd)
{
+ virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
+ virSecurityLabelDefPtr secdef;
uid_t user;
gid_t group;
- virSecurityDACDataPtr priv = virSecurityManagerGetPrivateData(mgr);
- if (virSecurityDACGetIds(def, priv, &user, &group, NULL, NULL))
+ secdef = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
+
+ if (virSecurityDACGetIds(secdef, priv, &user, &group, NULL, NULL))
return -1;
VIR_DEBUG("Setting child to drop privileges of DEF to %u:%u",
--
1.8.1.4
--
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