1 files changed, 48 insertions, 0 deletions

diff --git a/coreutils/realpath.c b/coreutils/realpath.c
new file mode 100644
index 000000000..5f3242fb5
--- /dev/null
+++ b/coreutils/realpath.c
@@ -0,0 +1,48 @@
+/* vi: set sw=4 ts=4: */
+
+/* BB_AUDIT SUSv3 N/A -- Apparently a busybox extension. */
+
+/* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
+ *
+ * Now does proper error checking on output and returns a failure exit code
+ * if one or more paths cannot be resolved.
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include <limits.h>
+#include <stdlib.h>
+#include "busybox.h"
+
+int realpath_main(int argc, char **argv)
+{
+        int retval = EXIT_SUCCESS;
+
+#if PATH_MAX > (BUFSIZ+1)
+        RESERVE_CONFIG_BUFFER(resolved_path, PATH_MAX);
+# define resolved_path_MUST_FREE 1
+#else
+#define resolved_path bb_common_bufsiz1
+# define resolved_path_MUST_FREE 0
+#endif
+
+        if (--argc == 0) {
+                bb_show_usage();
+        }
+
+        do {
+                argv++;
+                if (realpath(*argv, resolved_path) != NULL) {
+                        puts(resolved_path);
+                } else {
+                        retval = EXIT_FAILURE;
+                        bb_perror_msg("%s", *argv);
+                }
+        } while (--argc);
+
+#if ENABLE_FEATURE_CLEAN_UP && resolved_path_MUST_FREE
+        RELEASE_CONFIG_BUFFER(resolved_path);
+#endif
+
+        fflush_stdout_and_exit(retval);
+}