1 files changed, 13 insertions, 0 deletions
diff --git a/lib/libc/stdlib/unsetenv.c b/lib/libc/stdlib/unsetenv.c
new file mode 100644
index 00000000..4eb11d57
--- /dev/null
+++ b/lib/libc/stdlib/unsetenv.c
@@ -0,0 +1,13 @@
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+int unsetenv(const char *name)
+{
+	if (name == NULL || *name == '\0' || strchr(name, '=')) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	return setenv(name, NULL, 1);
+}