From: Dominik Dingel <din...@linux.vnet.ibm.com>
Instead of manually parsing the boot_list as character stream,
we can access the nth boot device, specified by the position in the
boot order.
Signed-off-by: Dominik Dingel <din...@linux.vnet.ibm.com>
Reviewed-by: Anthony Liguori <aligu...@us.ibm.com>
Signed-off-by: Alexander Graf <ag...@suse.de>
---
include/sysemu/sysemu.h | 2 ++
vl.c | 18 ++++++++++++++++++
2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 6578782..43b961c 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -181,6 +181,8 @@ void add_boot_device_path(int32_t bootindex, DeviceState
*dev,
const char *suffix);
char *get_boot_devices_list(size_t *size);
+DeviceState *get_boot_device(uint32_t position);
+
bool usb_enabled(bool default_usb);
extern QemuOptsList qemu_drive_opts;
diff --git a/vl.c b/vl.c
index 2e0d1a7..322ea80 100644
--- a/vl.c
+++ b/vl.c
@@ -1222,6 +1222,24 @@ void add_boot_device_path(int32_t bootindex, DeviceState
*dev,
QTAILQ_INSERT_TAIL(&fw_boot_order, node, link);
}
+DeviceState *get_boot_device(uint32_t position)
+{
+ uint32_t counter = 0;
+ FWBootEntry *i = NULL;
+ DeviceState *res = NULL;
+
+ if (!QTAILQ_EMPTY(&fw_boot_order)) {
+ QTAILQ_FOREACH(i, &fw_boot_order, link) {
+ if (counter == position) {
+ res = i->dev;
+ break;
+ }
+ counter++;
+ }
+ }
+ return res;
+}
+
/*
* This function returns null terminated string that consist of new line
* separated device paths.
--
1.6.0.2
