Fix crash on accessing vcs without a console being active

* console-client/current-vcs.c (vcs_readlink): Return error as negative
values.
(vcs_read): Convert errors returned by vcs_readlink before returning
them.

1 files changed, 3 insertions, 3 deletions

diff --git a/console-client/current-vcs.c b/console-client/current-vcs.c
index e88e549d..f1112f98 100644
--- a/console-client/current-vcs.c
+++ b/console-client/current-vcs.c
@@ -57,7 +57,7 @@ vcs_readlink (struct iouser *user, struct node *np, char *buf)
 	ret = sprintf (buf, "%s/%d", cons_file, cur);
 
       if (ret < 0)
-	ret = errno;
+	ret = -errno;
     }
   return ret;
 }
@@ -75,14 +75,14 @@ vcs_read (struct protid *user, char **data,
     {
       size = vcs_readlink (user->user, NULL, NULL);
       if (size < 0)
-	return size;
+	return -size;
 
       buf = alloca (size);
 
       err = vcs_readlink (user->user, NULL, buf);
 
       if (err < 0)
-	return err;
+	return -err;
 
       if (offset + amount > size)
 	amount = size - offset;