4:20 a.m.
Use the callback to set disk and storage image labels by modifying the
existing functions and adding wrappers to avoid refactoring a lot of the
code.
---
src/security/security_dac.c | 89 +++++++++++++++++++++++++++++++++++----------
1 file changed, 69 insertions(+), 20 deletions(-)
diff --git a/src/security/security_dac.c b/src/security/security_dac.c
index 1fb0c86..989329f 100644
--- a/src/security/security_dac.c
+++ b/src/security/security_dac.c
@@ -230,23 +230,54 @@ virSecurityDACPreFork(virSecurityManagerPtr mgr)
}
static int
-virSecurityDACSetOwnership(const char *path, uid_t uid, gid_t gid)
+virSecurityDACSetOwnershipInternal(virSecurityDACDataPtr priv,
+ virStorageSourcePtr src,
+ const char *path,
+ uid_t uid,
+ gid_t gid)
{
+ int rc;
+ int chown_errno;
+
VIR_INFO("Setting DAC user and group on '%s' to
'%ld:%ld'",
- path, (long) uid, (long) gid);
+ NULLSTR(src ? src->path : path), (long) uid, (long) gid);
+
+ if (priv && src && priv->chownCallback) {
+ rc = priv->chownCallback(src, uid, gid);
+
+ /* on -2 returned an error was already reported */
+ if (rc == -2)
+ return -1;
- if (chown(path, uid, gid) < 0) {
+ /* on -1 only errno was set */
+ chown_errno = errno;
+ } else {
struct stat sb;
- int chown_errno = errno;
- if (stat(path, &sb) >= 0) {
+ if (!path) {
+ if (!src || !src->path)
+ return 0;
+
+ if (!virStorageSourceIsLocalStorage(src))
+ return 0;
+
+ path = src->path;
+ }
+
+ rc = chown(path, uid, gid);
+ chown_errno = errno;
+
+ if (rc < 0 &&
+ stat(path, &sb) >= 0) {
if (sb.st_uid == uid &&
sb.st_gid == gid) {
/* It's alright, there's nothing to change anyway. */
return 0;
}
}
+ }
+ if (rc < 0) {
if (chown_errno == EOPNOTSUPP || chown_errno == EINVAL) {
VIR_INFO("Setting user and group to '%ld:%ld' on '%s'
not "
"supported by filesystem",
@@ -270,13 +301,31 @@ virSecurityDACSetOwnership(const char *path, uid_t uid, gid_t gid)
return 0;
}
+
static int
-virSecurityDACRestoreSecurityFileLabel(const char *path)
+virSecurityDACSetOwnership(const char *path, uid_t uid, gid_t gid)
+{
+ return virSecurityDACSetOwnershipInternal(NULL, NULL, path, uid, gid);
+}
+
+
+static int
+virSecurityDACRestoreSecurityFileLabelInternal(virSecurityDACDataPtr priv,
+ virStorageSourcePtr src,
+ const char *path)
{
- VIR_INFO("Restoring DAC user and group on '%s'", path);
+ VIR_INFO("Restoring DAC user and group on '%s'",
+ NULLSTR(src ? src->path : path));
/* XXX record previous ownership */
- return virSecurityDACSetOwnership(path, 0, 0);
+ return virSecurityDACSetOwnershipInternal(priv, src, path, 0, 0);
+}
+
+
+static int
+virSecurityDACRestoreSecurityFileLabel(const char *path)
+{
+ return virSecurityDACRestoreSecurityFileLabelInternal(NULL, NULL, path);
}
@@ -294,10 +343,6 @@ virSecurityDACSetSecurityImageLabel(virSecurityManagerPtr mgr,
if (!priv->dynamicOwnership)
return 0;
- /* XXX: Add support for gluster DAC permissions */
- if (!src->path || !virStorageSourceIsLocalStorage(src))
- return 0;
-
secdef = virDomainDefGetSecurityLabelDef(def, SECURITY_DAC_NAME);
if (secdef && !secdef->relabel)
return 0;
@@ -315,7 +360,7 @@ virSecurityDACSetSecurityImageLabel(virSecurityManagerPtr mgr,
return -1;
}
- return virSecurityDACSetOwnership(src->path, user, group);
+ return virSecurityDACSetOwnershipInternal(priv, src, NULL, user, group);
}
@@ -349,9 +394,6 @@ virSecurityDACRestoreSecurityImageLabelInt(virSecurityManagerPtr mgr,
if (!priv->dynamicOwnership)
return 0;
- if (!src->path || !virStorageSourceIsLocalStorage(src))
- return 0;
-
/* Don't restore labels on readoly/shared disks, because other VMs may
* still be accessing these. Alternatively we could iterate over all
* running domains and try to figure out if it is in use, but this would
@@ -373,9 +415,16 @@ virSecurityDACRestoreSecurityImageLabelInt(virSecurityManagerPtr
mgr,
* ownership, because that kills access on the destination host which is
* sub-optimal for the guest VM's I/O attempts :-) */
if (migrated) {
- int rc = virFileIsSharedFS(src->path);
- if (rc < 0)
- return -1;
+ int rc = 1;
+
+ if (virStorageSourceIsLocalStorage(src)) {
+ if (!src->path)
+ return 0;
+
+ if ((rc = virFileIsSharedFS(src->path)) < 0)
+ return -1;
+ }
+
if (rc == 1) {
VIR_DEBUG("Skipping image label restore on %s because FS is
shared",
src->path);
@@ -383,7 +432,7 @@ virSecurityDACRestoreSecurityImageLabelInt(virSecurityManagerPtr mgr,
}
}
- return virSecurityDACRestoreSecurityFileLabel(src->path);
+ return virSecurityDACRestoreSecurityFileLabelInternal(priv, src, NULL);
}
--
2.0.0