migrate to gitlab

1 files changed, 63 insertions, 0 deletions

diff --git a/env.c b/env.c
new file mode 100644
index 0000000..9ba2d05
--- /dev/null
+++ b/env.c
@@ -0,0 +1,63 @@
+/*
+ * UNG's Not GNU
+ *
+ * Copyright (c) 2011-2017, Jakob Kaivo <jkk@ung.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#define _XOPEN_SOURCE 700
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define UTILITY_NOT_INVOKED (126)
+#define UTILITY_NOT_FOUND (127)
+
+extern char **environ;
+
+int main(int argc, char *argv[])
+{
+	int c;
+	while ((c = getopt(argc, argv, "i")) != -1) {
+		switch (c) {
+		case 'i':	/** ignore inherited environment **/
+			environ = NULL;
+			break;
+
+		default:
+			return 1;
+		}
+	}
+
+	while (argv[optind] && strchr(argv[optind], '=')) {
+		putenv(argv[optind++]);
+	}
+
+	if (optind >= argc) {
+		if (environ) {
+			for (int i = 0; environ[i]; i++) {
+				puts(environ[i]);
+			}
+		}
+		return 0;
+	}
+	
+	execvp(argv[optind], argv + optind);
+
+	fprintf(stderr, "env: Couldn't run '%s': %s\n", argv[optind], strerror(errno));
+	return errno == ENOENT ? UTILITY_NOT_FOUND : UTILITY_NOT_INVOKED;
+}