1 files changed, 54 insertions, 0 deletions
diff --git a/util/sbase/readlink.c b/util/sbase/readlink.c
new file mode 100644
index 00000000..d059584f
--- /dev/null
+++ b/util/sbase/readlink.c
@@ -0,0 +1,54 @@
+/* See LICENSE file for copyright and license details. */
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "util.h"
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [-fn] path\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	char buf[PATH_MAX];
+	ssize_t n;
+	int nflag = 0, fflag = 0;
+
+	ARGBEGIN {
+	case 'f':
+		fflag = ARGC();
+		break;
+	case 'n':
+		nflag = 1;
+		break;
+	default:
+		usage();
+	} ARGEND
+
+	if (argc != 1)
+		usage();
+
+	if (strlen(argv[0]) >= PATH_MAX)
+		eprintf("path too long\n");
+
+	if (fflag) {
+		if (!realpath(argv[0], buf))
+			eprintf("realpath %s:", argv[0]);
+	} else {
+		if ((n = readlink(argv[0], buf, PATH_MAX - 1)) < 0)
+			eprintf("readlink %s:", argv[0]);
+		buf[n] = '\0';
+	}
+
+	fputs(buf, stdout);
+	if (!nflag)
+		putchar('\n');
+
+	return fshut(stdout, "<stdout>");
+}