From d6fe82d3d1699eb417f87b487048f95fee91e2cd Mon Sep 17 00:00:00 2001
From: NIIBE Yutaka <gniibe@fsij.org>
Date: Thu, 6 May 2021 19:05:30 +0900
Subject: scd: When reader is specified, make sure only open once.

* scd/apdu.c (apdu_open_reader): Make sure not to try multiple times,
when PORTSTR is specified.

--

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
---
 scd/apdu.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scd/apdu.c b/scd/apdu.c
index 1dd6427da..44ef445c8 100644
--- a/scd/apdu.c
+++ b/scd/apdu.c
@@ -2142,6 +2142,11 @@ apdu_open_reader (struct dev_list *dl)
       if (readerno < 0 || readerno >= dl->idx_max)
         return -1;
 
+      /* If already opened HANDLE, return -1.  */
+      for (slot = 0; slot < MAX_READER; slot++)
+        if (reader_table[slot].used)
+          return -1;
+
       dl->idx = readerno;
       dl->portstr = NULL;
     }
-- 
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