libceph, ceph: change permission for readonly debugfs entries

Remove write permission for debugfs entries which only have readonly
function.

Signed-off-by: Chengguang Xu <cgxu519@icloud.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

fs/ceph/debugfs.c

@@ -260,7 +260,7 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 		goto out;
 
 	fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
-					0600,
+					0400,
 					fsc->client->debugfs_dir,
 					fsc,
 					&mdsmap_show_fops);
@@ -268,7 +268,7 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 		goto out;
 
 	fsc->debugfs_mds_sessions = debugfs_create_file("mds_sessions",
-					0600,
+					0400,
 					fsc->client->debugfs_dir,
 					fsc,
 					&mds_sessions_show_fops);
@@ -276,7 +276,7 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 		goto out;
 
 	fsc->debugfs_mdsc = debugfs_create_file("mdsc",
-						0600,
+						0400,
 						fsc->client->debugfs_dir,
 						fsc,
 						&mdsc_show_fops);
@@ -292,7 +292,7 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
 		goto out;
 
 	fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
-					0600,
+					0400,
 					fsc->client->debugfs_dir,
 					fsc,
 					&dentry_lru_show_fops);

net/ceph/debugfs.c

@@ -418,7 +418,7 @@ int ceph_debugfs_client_init(struct ceph_client *client)
 		goto out;
 
 	client->monc.debugfs_file = debugfs_create_file("monc",
-						      0600,
+						      0400,
 						      client->debugfs_dir,
 						      client,
 						      &monc_show_fops);
@@ -426,7 +426,7 @@ int ceph_debugfs_client_init(struct ceph_client *client)
 		goto out;
 
 	client->osdc.debugfs_file = debugfs_create_file("osdc",
-						      0600,
+						      0400,
 						      client->debugfs_dir,
 						      client,
 						      &osdc_show_fops);
@@ -434,7 +434,7 @@ int ceph_debugfs_client_init(struct ceph_client *client)
 		goto out;
 
 	client->debugfs_monmap = debugfs_create_file("monmap",
-					0600,
+					0400,
 					client->debugfs_dir,
 					client,
 					&monmap_show_fops);
@@ -442,7 +442,7 @@ int ceph_debugfs_client_init(struct ceph_client *client)
 		goto out;
 
 	client->debugfs_osdmap = debugfs_create_file("osdmap",
-					0600,
+					0400,
 					client->debugfs_dir,
 					client,
 					&osdmap_show_fops);
@@ -450,7 +450,7 @@ int ceph_debugfs_client_init(struct ceph_client *client)
 		goto out;
 
 	client->debugfs_options = debugfs_create_file("client_options",
-					0600,
+					0400,
 					client->debugfs_dir,
 					client,
 					&client_options_show_fops);