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47 lines
1.4 KiB
Diff
47 lines
1.4 KiB
Diff
From 0475cf691e25ffe50756690d7199d425e200307c Mon Sep 17 00:00:00 2001
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From: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
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Date: Mon, 6 May 2013 12:32:33 -0300
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Subject: [PATCH 482/482] Fix net_bootp cmd crash when there isn't network card
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Adds a check for a network card available before trying to procedure with bootp.
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This fixes the bugzilla bellow:
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Bug 960624 - Grub2 crashes when net_bootp command fails
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https://bugzilla.redhat.com/show_bug.cgi?id=960624
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---
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grub-core/net/bootp.c | 6 ++++++
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include/grub/err.h | 1 +
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2 files changed, 7 insertions(+)
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diff --git a/grub-core/net/bootp.c b/grub-core/net/bootp.c
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index af3cb62..26e3be4 100644
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--- a/grub-core/net/bootp.c
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+++ b/grub-core/net/bootp.c
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@@ -483,6 +483,12 @@ grub_cmd_bootp (struct grub_command *cmd __attribute__ ((unused)),
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ncards++;
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}
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+ if (ncards == 0)
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+ {
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+ err = grub_error (GRUB_ERR_NET_NO_CARD, N_("no network card found"));
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+ return err;
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+ }
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+
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ifaces = grub_zalloc (ncards * sizeof (ifaces[0]));
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if (!ifaces)
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return grub_errno;
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diff --git a/include/grub/err.h b/include/grub/err.h
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index 0f9b208..9896fcc 100644
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--- a/include/grub/err.h
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+++ b/include/grub/err.h
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@@ -62,6 +62,7 @@ typedef enum
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GRUB_ERR_NET_ROUTE_LOOP,
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GRUB_ERR_NET_NO_ROUTE,
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GRUB_ERR_NET_NO_ANSWER,
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+ GRUB_ERR_NET_NO_CARD,
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GRUB_ERR_WAIT,
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GRUB_ERR_BUG,
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GRUB_ERR_NET_PORT_CLOSED,
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--
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1.8.2.1
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