unlink only needs to be a builtin, not an external

1 files changed, 58 insertions, 0 deletions

diff --git a/src/poudriere-sh/unlink.c b/src/poudriere-sh/unlink.c
new file mode 100644
index 00000000..477f7a3b
--- /dev/null
+++ b/src/poudriere-sh/unlink.c
@@ -0,0 +1,58 @@
+/*-
+ * Copyright (c) 2017 Bryan Drewery <bdrewery@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <err.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#ifdef SHELL
+#define main unlinkcmd
+#include "bltin/bltin.h"
+#include <errno.h>
+#define err(exitstatus, fmt, ...) error(fmt ": %s", __VA_ARGS__, strerror(errno))
+#endif
+
+/**
+ * Just call unlink(2) on the params.
+ */
+int
+main(int argc, char **argv)
+{
+
+	if (argc != 2)
+		errx(EX_USAGE, "Usage: unlink file");
+
+	if (unlink(argv[1]))
+#ifdef SHELL
+		error("%s", strerror(errno));
+#else
+		err(EXIT_FAILURE, NULL);
+#endif
+
+	return (0);
+}