1 files changed, 51 insertions, 0 deletions
diff --git a/src/errno.c b/src/errno.c
new file mode 100644
index 0000000..80b46fe
--- /dev/null
+++ b/src/errno.c
@@ -0,0 +1,51 @@
+/**
+ * slibc — Yet another C library
+ * Copyright © 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <errno.h>
+
+
+
+/**
+ * This is the name that was used to invoke the program
+ * running in the current process. This is the value
+ * of `argv[0]` from the `main` function (where `argv`
+ * is the second parameter). If `argc` is zero, this
+ * variable will have the value `NULL`. This is not
+ * necessarily a proper comman name. For example,
+ * login shells are usually prefixes with a dash,
+ * for example "-bash", despite that there is no such
+ * command. Often, but not always, this will not contain
+ * directory.
+ * 
+ * This string may be edited if `program_invocation_short_name`
+ * or `argv[0]` is edited.
+ * 
+ * This is a GNU and slibc extension.
+ */
+char* program_invocation_name = NULL;
+
+/**
+ * Variant of `program_invocation_name` that is
+ * guaranteed to not include the directory.
+ * 
+ * This string may be edited if `program_invocation_name`
+ * or `argv[0]` is edited.
+ * 
+ * This is a GNU extension.
+ */
+char* program_invocation_short_name = NULL;
+