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[Qemu-devel] [PULL 17/24] scripts/signrom.py: Check for magic in option
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 17/24] scripts/signrom.py: Check for magic in option ROMs. |
Date: |
Mon, 23 May 2016 17:09:52 +0200 |
From: "Richard W.M. Jones" <address@hidden>
Because of the risk that compilers might not emit the asm() block at
the beginning of the option ROM, check that the ROM contains the
required magic signature.
Signed-off-by: Richard W.M. Jones <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
scripts/signrom.py | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/scripts/signrom.py b/scripts/signrom.py
index 6c8b9bf..5629bca 100644
--- a/scripts/signrom.py
+++ b/scripts/signrom.py
@@ -17,7 +17,10 @@ if len(sys.argv) < 3:
fin = open(sys.argv[1], 'rb')
fout = open(sys.argv[2], 'wb')
-fin.seek(2)
+magic = fin.read(2)
+if magic != '\x55\xaa':
+ sys.exit("%s: option ROM does not begin with magic 55 aa" % sys.argv[1])
+
size_byte = ord(fin.read(1))
fin.seek(0)
--
1.8.3.1
- [Qemu-devel] [PULL 01/24] exec.c: Ensure right alignment also for file backed ram, (continued)
- [Qemu-devel] [PULL 01/24] exec.c: Ensure right alignment also for file backed ram, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 02/24] docs/atomics.txt: Update pointer to linux macro, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 10/24] exec: adjust rcu_read_lock requirement, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 18/24] esp: check command buffer length before write(CVE-2016-4439), Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 04/24] configure: Allow builds with extra warnings, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 15/24] Remove config-devices.mak on 'make clean', Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 14/24] cpus.c: Use pthread_sigmask() rather than sigprocmask(), Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 23/24] nmi: remove x86 specific nmi handling, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 19/24] esp: check dma length before reading scsi command(CVE-2016-4441), Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 12/24] memory: Drop FlatRange.romd_mode, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 17/24] scripts/signrom.py: Check for magic in option ROMs.,
Paolo Bonzini <=
- [Qemu-devel] [PULL 11/24] memory: Remove code for mr->may_overlap, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 16/24] scripts/signrom.py: Allow option ROM checksum script to write the size header., Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 24/24] cpus: call the core nmi injection function, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 20/24] iscsi: pass SCSI status back for SG_IO, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 22/24] target-i386: add a generic x86 nmi handler, Paolo Bonzini, 2016/05/23
- [Qemu-devel] [PULL 21/24] coccinelle: add g_assert_cmp* to macro file, Paolo Bonzini, 2016/05/23
- Re: [Qemu-devel] [PULL 00/24] Misc patches for 2016-05-23, Peter Maydell, 2016/05/23