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[Qemu-devel] [PATCH 1/2] pc_sysfw: Check for qemu_find_file() failure
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] [PATCH 1/2] pc_sysfw: Check for qemu_find_file() failure |
Date: |
Fri, 23 Nov 2012 19:12:17 +0100 |
pc_fw_add_pflash_drv() ignores qemu_find_file() failure, and happily
creates a drive without a medium.
When pc_system_flash_init() asks for its size, bdrv_getlength() fails
with -ENOMEDIUM, which isn't checked either. It fails relatively
cleanly only because -ENOMEDIUM isn't a multiple of 4096:
$ qemu-system-x86_64 -S -vnc :0 -bios nonexistant
qemu: PC system firmware (pflash) must be a multiple of 0x1000
[Exit 1 ]
Fix by handling the qemu_find_file() failure.
Signed-off-by: Markus Armbruster <address@hidden>
---
hw/pc_sysfw.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/hw/pc_sysfw.c b/hw/pc_sysfw.c
index 9d7c5f4..066c4fe 100644
--- a/hw/pc_sysfw.c
+++ b/hw/pc_sysfw.c
@@ -84,6 +84,11 @@ static void pc_fw_add_pflash_drv(void)
bios_name = BIOS_FILENAME;
}
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
+ if (!filename) {
+ error_report("Can't open BIOS image %s: %s",
+ bios_name, strerror(errno));
+ exit(1);
+ }
opts = drive_add(IF_PFLASH, -1, filename, "readonly=on");
--
1.7.11.7