xnu-4903.231.4.tar.gz

[apple/xnu.git] / bsd / vfs / vfs_init.c

diff --git a/bsd/vfs/vfs_init.c b/bsd/vfs/vfs_init.c
index 7a5c95a61ebf8bffe9c86622bd1e4ba00a7fbc51..bd44f363149e1fc0d406a7b161b67897504a58f3 100644 (file)
--- a/bsd/vfs/vfs_init.c
+++ b/bsd/vfs/vfs_init.c
@@ -173,6 +173,13 @@ vfs_opv_init(void)
                for (j=0; vfs_opv_descs[i]->opv_desc_ops[j].opve_op; j++) {
                        opve_descp = &(vfs_opv_descs[i]->opv_desc_ops[j]);
 
+                       /* Silently skip known-disabled operations */
+                       if (opve_descp->opve_op->vdesc_flags & VDESC_DISABLED) {
+                               printf("vfs_fsadd: Ignoring reference in %p to disabled operation %s.\n",
+                                       vfs_opv_descs[i], opve_descp->opve_op->vdesc_name);
+                               continue;
+                       }
+
                        /*
                         * Sanity check:  is this operation listed
                         * in the list of operations?  We check this
@@ -191,8 +198,8 @@ vfs_opv_init(void)
                         * list of supported operations.
                         */
                        if (opve_descp->opve_op->vdesc_offset == 0 &&
-                                   opve_descp->opve_op->vdesc_offset !=
-                                       VOFFSET(vnop_default)) {
+                                   opve_descp->opve_op !=
+                                       VDESC(vnop_default)) {
                                printf("operation %s not listed in %s.\n",
                                    opve_descp->opve_op->vdesc_name,
                                    "vfs_op_descs");
@@ -244,6 +251,10 @@ vfs_op_init(void)
         * and assign each its offset.
         */
        for (vfs_opv_numops = 0, i = 0; vfs_op_descs[i]; i++) {
+               /* Silently skip known-disabled operations */
+               if (vfs_op_descs[i]->vdesc_flags & VDESC_DISABLED) {
+                       continue;
+               }
                vfs_op_descs[i]->vdesc_offset = vfs_opv_numops;
                vfs_opv_numops++;
        }
@@ -529,6 +540,7 @@ void
 mount_lock_init(mount_t mp)
 {
        lck_mtx_init(&mp->mnt_mlock, mnt_lck_grp, mnt_lck_attr);
+       lck_mtx_init(&mp->mnt_iter_lock, mnt_lck_grp, mnt_lck_attr);
        lck_mtx_init(&mp->mnt_renamelock, mnt_lck_grp, mnt_lck_attr);
        lck_rw_init(&mp->mnt_rwlock, mnt_lck_grp, mnt_lck_attr);
 }
@@ -537,6 +549,7 @@ void
 mount_lock_destroy(mount_t mp)
 {
        lck_mtx_destroy(&mp->mnt_mlock, mnt_lck_grp);
+       lck_mtx_destroy(&mp->mnt_iter_lock, mnt_lck_grp);
        lck_mtx_destroy(&mp->mnt_renamelock, mnt_lck_grp);
        lck_rw_destroy(&mp->mnt_rwlock, mnt_lck_grp);
 }