1 files changed, 37 insertions, 0 deletions
diff --git a/usr/klibc/putenv.c b/usr/klibc/putenv.c
new file mode 100644
index 0000000..5059ecb
--- /dev/null
+++ b/usr/klibc/putenv.c
@@ -0,0 +1,37 @@
+/*
+ * putenv.c
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "env.h"
+
+int putenv(const char *str)
+{
+	char *s;
+	const char *e, *z;
+
+	if (!str) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	e = NULL;
+	for (z = str; *z; z++) {
+		if (*z == '=')
+			e = z;
+	}
+
+	if (!e) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	s = strdup(str);
+	if (!s)
+		return -1;
+
+	return __put_env(s, e - str, 1);
+}