Author: kevans
Date: Sun Jun  2 14:05:51 2019
New Revision: 348510
URL: https://svnweb.freebsd.org/changeset/base/348510

Log:
  bectl(8): Don't accept jid=0 from jail_getid
  
  This will trivially exist, but we don't want it - none of our jailed BEs
  will have jid=0.
  
  MFC after:    3 days

Modified:
  head/sbin/bectl/bectl_jail.c

Modified: head/sbin/bectl/bectl_jail.c
==============================================================================
--- head/sbin/bectl/bectl_jail.c        Sun Jun  2 14:03:56 2019        
(r348509)
+++ head/sbin/bectl/bectl_jail.c        Sun Jun  2 14:05:51 2019        
(r348510)
@@ -411,7 +411,12 @@ bectl_locate_jail(const char *ident)
 
        /* Try the easy-match first */
        jid = jail_getid(ident);
-       if (jid != -1)
+       /*
+        * jail_getid(0) will always return 0, because this prison does exist.
+        * bectl(8) knows that this is not what it wants, so we should fall
+        * back to mount point search.
+        */
+       if (jid > 0)
                return (jid);
 
        /* Attempt to try it as a BE name, first */
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