virtio-9p: Add support for removing xattr

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/hw/virtio-9p-local.c b/hw/virtio-9p-local.c
index 132816e607..57f92433d3 100644
--- a/hw/virtio-9p-local.c
+++ b/hw/virtio-9p-local.c
@@ -581,6 +581,22 @@ static int local_lsetxattr(FsContext *ctx, const char *path, const char *name,
     return lsetxattr(rpath(ctx, path), name, value, size, flags);
 }
 
+static int local_lremovexattr(FsContext *ctx,
+                              const char *path, const char *name)
+{
+    if ((ctx->fs_sm == SM_MAPPED) &&
+        (strncmp(name, "user.virtfs.", 12) == 0)) {
+        /*
+         * Don't allow fetch of user.virtfs namesapce
+         * in case of mapped security
+         */
+        errno = EACCES;
+        return -1;
+    }
+    return lremovexattr(rpath(ctx, path), name);
+}
+
+
 FileOperations local_ops = {
     .lstat = local_lstat,
     .readlink = local_readlink,
@@ -612,4 +628,5 @@ FileOperations local_ops = {
     .lgetxattr = local_lgetxattr,
     .llistxattr = local_llistxattr,
     .lsetxattr = local_lsetxattr,
+    .lremovexattr = local_lremovexattr,
 };