s3/modules: VFS: snapper: Add new fchmod_fn implementation

Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Ralph Boehme <slow@samba.org>

diff --git a/source3/modules/vfs_snapper.c b/source3/modules/vfs_snapper.c
index 3b900c835a0de29735ecbfd3c6a8df40d37ff7c8..412a77059c9e740550c5074d73fcffa9f3c41e94 100644 (file)
--- a/source3/modules/vfs_snapper.c
+++ b/source3/modules/vfs_snapper.c
@@ -2170,6 +2170,30 @@ static int snapper_gmt_chmod(vfs_handle_struct *handle,
        return SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
 }
 
+static int snapper_gmt_fchmod(vfs_handle_struct *handle,
+                       struct files_struct *fsp,
+                       mode_t mode)
+{
+       time_t timestamp = 0;
+       const struct smb_filename *smb_fname = NULL;
+
+       smb_fname = fsp->fsp_name;
+
+       if (!snapper_gmt_strip_snapshot(talloc_tos(),
+                                       handle,
+                                       smb_fname,
+                                       &timestamp,
+                                       NULL)) {
+               return -1;
+       }
+
+       if (timestamp != 0) {
+               errno = EROFS;
+               return -1;
+       }
+       return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
+}
+
 static int snapper_gmt_chdir(vfs_handle_struct *handle,
                        const struct smb_filename *smb_fname)
 {
@@ -2726,6 +2750,7 @@ static struct vfs_fn_pointers snapper_fns = {
        .openat_fn = snapper_gmt_openat,
        .unlinkat_fn = snapper_gmt_unlinkat,
        .chmod_fn = snapper_gmt_chmod,
+       .fchmod_fn = snapper_gmt_fchmod,
        .chdir_fn = snapper_gmt_chdir,
        .ntimes_fn = snapper_gmt_ntimes,
        .readlinkat_fn = snapper_gmt_readlinkat,