s3: VFS: vfs_snapper. Implement mknodat().

Currently identical to mknod().

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>

diff --git a/source3/modules/vfs_snapper.c b/source3/modules/vfs_snapper.c
index 2da3265e147bbf90d3057e7c32be4e4cc1179dfd..f13b69ab8d02702de080ba1353020c8cb88eb3f9 100644 (file)
--- a/source3/modules/vfs_snapper.c
+++ b/source3/modules/vfs_snapper.c
@@ -2400,6 +2400,30 @@ static int snapper_gmt_mknod(vfs_handle_struct *handle,
        return SMB_VFS_NEXT_MKNOD(handle, smb_fname, mode, dev);
 }
 
+static int snapper_gmt_mknodat(vfs_handle_struct *handle,
+                       files_struct *dirfsp,
+                       const struct smb_filename *smb_fname,
+                       mode_t mode,
+                       SMB_DEV_T dev)
+{
+       time_t timestamp = (time_t)0;
+
+       if (!snapper_gmt_strip_snapshot(talloc_tos(), handle,
+                                       smb_fname->base_name,
+                                       &timestamp, NULL)) {
+               return -1;
+       }
+       if (timestamp != 0) {
+               errno = EROFS;
+               return -1;
+       }
+       return SMB_VFS_NEXT_MKNODAT(handle,
+                       dirfsp,
+                       smb_fname,
+                       mode,
+                       dev);
+}
+
 static struct smb_filename *snapper_gmt_realpath(vfs_handle_struct *handle,
                                TALLOC_CTX *ctx,
                                const struct smb_filename *smb_fname)
@@ -2882,6 +2906,7 @@ static struct vfs_fn_pointers snapper_fns = {
        .ntimes_fn = snapper_gmt_ntimes,
        .readlink_fn = snapper_gmt_readlink,
        .mknod_fn = snapper_gmt_mknod,
+       .mknodat_fn = snapper_gmt_mknodat,
        .realpath_fn = snapper_gmt_realpath,
        .get_nt_acl_fn = snapper_gmt_get_nt_acl,
        .fget_nt_acl_fn = snapper_gmt_fget_nt_acl,