From 40dac659418f84551a5637a9edee03764c570f3c Mon Sep 17 00:00:00 2001
From: Kenny Root <kroot@google.com>
Date: Wed, 13 Jul 2011 09:14:33 -0700
Subject: [PATCH] Add -F for classify to ls

Adds a field to the non-long version of ls that tells what type of file
it is (i.e., regular, directory, link, fifo, etc).

This is useful for scripts that don't have direct filesystem access.

Change-Id: I54a327390f6ed403acb13c824f62ba9594ba320d
---
 toolbox/ls.c | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/toolbox/ls.c b/toolbox/ls.c
index 962bf471e..59ba35eca 100644
--- a/toolbox/ls.c
+++ b/toolbox/ls.c
@@ -144,6 +144,7 @@ static void strlist_sort( strlist_t *list )
 #define LIST_RECURSIVE      (1 << 2)
 #define LIST_DIRECTORIES    (1 << 3)
 #define LIST_SIZE           (1 << 4)
+#define LIST_CLASSIFY       (1 << 6)
 
 // fwd
 static int listpath(const char *name, int flags);
@@ -253,7 +254,27 @@ static int listfile_size(const char *path, const char *filename, int flags)
     }
 
     /* blocks are 512 bytes, we want output to be KB */
-    printf("%lld %s\n", s.st_blocks / 2, filename);
+    if ((flags & LIST_SIZE) != 0) {
+        printf("%lld ", s.st_blocks / 2);
+    }
+
+    if ((flags & LIST_CLASSIFY) != 0) {
+        char filetype = mode2kind(s.st_mode);
+        if (filetype != 'l') {
+            printf("%c ", filetype);
+        } else {
+            struct stat link_dest;
+            if (!stat(path, &link_dest)) {
+                printf("l%c ", mode2kind(link_dest.st_mode));
+            } else {
+                fprintf(stderr, "stat '%s' failed: %s\n", path, strerror(errno));
+                printf("l? ");
+            }
+        }
+    }
+
+    printf("%s\n", filename);
+
     return 0;
 }
 
@@ -330,7 +351,7 @@ static int listfile_long(const char *path, int flags)
 
 static int listfile(const char *dirname, const char *filename, int flags)
 {
-    if ((flags & (LIST_LONG | LIST_SIZE)) == 0) {
+    if ((flags & (LIST_LONG | LIST_SIZE | LIST_CLASSIFY)) == 0) {
         printf("%s\n", filename);
         return 0;
     }
@@ -480,6 +501,7 @@ int ls_main(int argc, char **argv)
                     case 'R': flags |= LIST_RECURSIVE; break;
                     case 'd': flags |= LIST_DIRECTORIES; break;
                     case 'a': flags |= LIST_ALL; break;
+                    case 'F': flags |= LIST_CLASSIFY; break;
                     default:
                         fprintf(stderr, "%s: Unknown option '-%c'. Aborting.\n", "ls", arg[0]);
                         exit(1);