Add SPDX License Identifier to all source files.

The Software Package Data Exchange (SPDX) is a good initiative, it has
matured over time and deserves accelerated adoption in open-source.

https://spdx.org/learn
https://spdx.org/using-spdx
https://spdx.org/license-list

7 files changed, 7 insertions, 0 deletions

diff --git a/src/metaentry.c b/src/metaentry.c
index f7ba477..8ba0e2e 100644
--- a/src/metaentry.c
+++ b/src/metaentry.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Various functions to work with meta entries.
  *
diff --git a/src/metaentry.h b/src/metaentry.h
index cbc99d6..9115169 100644
--- a/src/metaentry.h
+++ b/src/metaentry.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Various functions to work with meta entries.
  *
diff --git a/src/metastore.c b/src/metastore.c
index 0e321bb..fe5dcc4 100644
--- a/src/metastore.c
+++ b/src/metastore.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Main functions of the program.
  *
diff --git a/src/metastore.h b/src/metastore.h
index 27f80b6..6a06897 100644
--- a/src/metastore.h
+++ b/src/metastore.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Main functions of the program.
  *
diff --git a/src/settings.h b/src/settings.h
index 262a39c..b6baa50 100644
--- a/src/settings.h
+++ b/src/settings.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (C) 2013 Przemyslaw Pawelczyk <przemoc@gmail.com>
  *
diff --git a/src/utils.c b/src/utils.c
index 274af67..b15d66c 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Main functions of the program.
  *
diff --git a/src/utils.h b/src/utils.h
index 332a315..a12e02d 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Main functions of the program.
  *