+# if HAVE_STDLIB_H
+# include <stdlib.h>
+# endif
+
+# ifdef STAT_MACROS_BROKEN
+# undef S_ISLNK
+# endif
+
+# ifndef S_ISLNK
+# ifdef S_IFLNK
+# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
+# else
+# define S_ISLNK(m) 0
+# endif
+# endif
+
+# ifndef HAVE_DECL_FREE
+"this configure-time declaration test was not run"
+# endif
+# if !HAVE_DECL_FREE
+void free ();
+# endif
+
+# include "xalloc.h"
+
+/* lstat works differently on Linux and Solaris systems. POSIX (see
+ `pathname resolution' in the glossary) requires that programs like `ls'
+ take into consideration the fact that FILE has a trailing slash when
+ FILE is a symbolic link. On Linux systems, the lstat function already
+ has the desired semantics (in treating `lstat("symlink/",sbuf)' just like
+ `lstat("symlink/.",sbuf)', but on Solaris it does not.
+
+ If FILE has a trailing slash and specifies a symbolic link,
+ then append a `.' to FILE and call lstat a second time. */
+
+static int
+slash_aware_lstat (const char *file, struct stat *sbuf)
+{
+ size_t len;
+ char *new_file;
+
+ int lstat_result = lstat (file, sbuf);
+
+ if (lstat_result != 0 || !S_ISLNK (sbuf->st_mode))
+ return lstat_result;
+
+ len = strlen (file);
+ if (file[len - 1] != '/')
+ return lstat_result;
+
+ /* FILE refers to a symbolic link and the name ends with a slash.
+ Append a `.' to FILE and repeat the lstat call. */
+
+ /* Add one for the `.' we'll append, and one more for the trailing NUL. */
+ new_file = xmalloc (len + 1 + 1);
+ memcpy (new_file, file, len);
+ new_file[len] = '.';
+ new_file[len + 1] = 0;
+
+ lstat_result = lstat (new_file, sbuf);
+ free (new_file);
+
+ return lstat_result;
+}
+#endif /* LSTAT && ! LSTAT_FOLLOWS_SLASHED_SYMLINK */
+
+/* This is a wrapper for stat/lstat.