Add ACL to GNU ls

--- src/ls.c    2012-10-23 18:14:12.000000000 +0400
+++ src/ls.c.acl    2013-03-19 01:02:09.611176368 +0400
@@ -49,6 +49,8 @@
 # include <sys/ptem.h>
 #endif

+#include <sys/acl.h>
+
 #include <stdio.h>
 #include <assert.h>
 #include <setjmp.h>
@@ -182,7 +184,7 @@
     C_LINK, C_SOCK, C_FILE, C_DIR          \
   }

-enum acl_type
+enum ls_acl_type
   {
     ACL_T_NONE,
     ACL_T_SELINUX_ONLY,
@@ -216,7 +218,7 @@

     /* For long listings, true if the file has an access control list,
        or an SELinux security context.  */
-    enum acl_type acl_type;
+    enum ls_acl_type ls_acl_type;

     /* For color listings, true if a regular file has capability info.  */
     bool has_capability;
@@ -268,6 +270,7 @@
 static int format_user_width (uid_t u);
 static int format_group_width (gid_t g);
 static void print_long_format (const struct fileinfo *f);
+static void do_print_acl (const struct fileinfo *f);
 static void print_many_per_line (void);
 static size_t print_name_with_quoting (const struct fileinfo *f,
                                        bool symlink_target,
@@ -351,6 +354,7 @@
 static struct timespec current_time;

 static bool print_scontext;
+static bool print_acl;
 static char UNKNOWN_SECURITY_CONTEXT[] = "?";

 /* Whether any of the files has an ACL.  This affects the width of the
@@ -794,7 +798,8 @@
   SI_OPTION,
   SORT_OPTION,
   TIME_OPTION,
-  TIME_STYLE_OPTION
+  TIME_STYLE_OPTION,
+  ACL_OPTION,
 };

 static struct option const long_options[] =
@@ -840,6 +845,7 @@
   {"color", optional_argument, NULL, COLOR_OPTION},
   {"block-size", required_argument, NULL, BLOCK_SIZE_OPTION},
   {"context", no_argument, 0, 'Z'},
+  {"acl", no_argument, 0, ACL_OPTION},
   {"author", no_argument, NULL, AUTHOR_OPTION},
   {GETOPT_HELP_OPTION_DECL},
   {GETOPT_VERSION_OPTION_DECL},
@@ -1566,6 +1572,7 @@
   ignore_patterns = NULL;
   hide_patterns = NULL;
   print_scontext = false;
+  print_acl = false;

   /* FIXME: put this in a function.  */
   {
@@ -1944,6 +1951,11 @@
           print_scontext = true;
           break;

+        case ACL_OPTION:
+          print_acl = true;
+          format = long_format;
+          break;
+
         case_GETOPT_HELP_CHAR;

         case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
@@ -3023,12 +3035,12 @@
               have_acl = (0 < n);
             }

-          f->acl_type = (!have_selinux && !have_acl
+          f->ls_acl_type = (!have_selinux && !have_acl
                          ? ACL_T_NONE
                          : (have_selinux && !have_acl
                             ? ACL_T_SELINUX_ONLY
                             : ACL_T_YES));
-          any_has_acl |= f->acl_type != ACL_T_NONE;
+          any_has_acl |= f->ls_acl_type != ACL_T_NONE;

           if (err)
             error (0, errno, "%s", quotearg_colon (absolute_name));
@@ -3753,6 +3765,19 @@
           : (char *) "?");
 }

+/* Print ACL fo F.  */
+static void
+do_print_acl (const struct fileinfo *f)
+{
+    acl_t *aclp;
+    if (0 == acl_get(f->name, 0, &aclp) && NULL != aclp) {
+        putchar('\n');
+        acl_printacl(aclp, 80, 0);
+        acl_free(aclp);
+    }
+
+}
+
 /* Print information about F in long format.  */
 static void
 print_long_format (const struct fileinfo *f)
@@ -3784,9 +3809,9 @@
     }
   if (! any_has_acl)
     modebuf[10] = '\0';
-  else if (f->acl_type == ACL_T_SELINUX_ONLY)
+  else if (f->ls_acl_type == ACL_T_SELINUX_ONLY)
     modebuf[10] = '.';
-  else if (f->acl_type == ACL_T_YES)
+  else if (f->ls_acl_type == ACL_T_YES)
     modebuf[10] = '+';

   switch (time_type)
@@ -3972,6 +3997,9 @@
     }
   else if (indicator_style != none)
     print_type_indicator (f->stat_ok, f->stat.st_mode, f->filetype);
+
+  if (f->filetype != symbolic_link && print_acl)
+      do_print_acl(f);
 }

 /* Output to OUT a quoted representation of the file name NAME,