From c60e33c0ee9d866293c0e423d6c14e7c49f76430 Mon Sep 17 00:00:00 2001
From: isaac <isaac>
Date: Thu, 23 Feb 2006 08:28:15 +0000
Subject: [PATCH] r=liangzhen readline() should return NULL when EOF and the
 last line if empty, otherwise Parser_commands() will loop forever waiting for
 a NULL return from readline().

---
 lustre/utils/parser.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lustre/utils/parser.c b/lustre/utils/parser.c
index 513a5d7..2cb518d 100644
--- a/lustre/utils/parser.c
+++ b/lustre/utils/parser.c
@@ -333,6 +333,7 @@ char * readline(char * prompt)
         char *line = malloc(size);
         char *ptr = line;
         int c;
+        int eof = 0;
 
         if (line == NULL)
                 return NULL;
@@ -358,6 +359,7 @@ char * readline(char * prompt)
                                 line = tmp;
                         }
                 } else {
+                        eof = 1;
                         if (ferror(stdin))
                                 goto outfree;
                         goto out;
@@ -365,6 +367,10 @@ char * readline(char * prompt)
         }
 out:
         *ptr = 0;
+        if (eof && (strlen(line) == 0)) {
+                free(line);
+                line = NULL;
+        }
         return line;
 outfree:
         free(line);
-- 
1.8.3.1