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cd9d161514
qemu/0229-pc-Fix-floppy-drives-with-if-none.patch
Cole Robinson cd9d161514 CVE-2012-2652: Possible symlink attacks with -snapshot (bz 825697, bz 824919) 
Fix systemtap tapsets (bz 831763)
Fix qmp response race caused by spice server bug (bz 744015)
Fix text mode screendumps (bz 819155)
Don't renable ksm on update (bz 815156)
Fix RPM install error on non-virt machines (bz 660629)
Obsolete openbios to fix upgrade dependency issues (bz 694802)
2012-07-29 21:15:19 -04:00

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From 03ff3683be1e3a4e9644150b7f12f046374dcbcd Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Thu, 20 Oct 2011 16:37:26 +0200
Subject: [PATCH] pc: Fix floppy drives with if=none
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Commit 63ffb564 broke floppy devices specified on the command line like
-drive file=...,if=none,id=floppy -global isa-fdc.driveA=floppy because it
relies on drive_get() which works only with -fda/-drive if=floppy.
This patch resembles what we're already doing for IDE, i.e. remember the floppy
device that was created and use that to extract the BlockDriverStates where
needed.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
(cherry picked from commit 34d4260e1846d69d7241f690534e3dd4b3e6fd5b)
[BR: bnc#733777]
Signed-off-by: Bruce Rogers <brogers@suse.com>
[AF: backported]
Signed-off-by: Andreas Färber <afaerber@suse.de>
---
hw/fdc.c | 12 ++++++++++++
hw/fdc.h | 9 +++++++--
hw/pc.c | 25 ++++++++++++++-----------
hw/pc.h | 3 ++-
hw/pc_piix.c | 5 +++--
5 files changed, 38 insertions(+), 16 deletions(-)
diff --git a/hw/fdc.c b/hw/fdc.c
index 9fdbc75..cf675ce 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -1911,6 +1911,18 @@ static int sun4m_fdc_init1(SysBusDevice *dev)
return fdctrl_init_common(fdctrl);
}
+void fdc_get_bs(BlockDriverState *bs[], ISADevice *dev)
+{
+ FDCtrlISABus *isa = DO_UPCAST(FDCtrlISABus, busdev, dev);
+ FDCtrl *fdctrl = &isa->state;
+ int i;
+
+ for (i = 0; i < MAX_FD; i++) {
+ bs[i] = fdctrl->drives[i].bs;
+ }
+}
+
+
static const VMStateDescription vmstate_isa_fdc ={
.name = "fdc",
.version_id = 2,
diff --git a/hw/fdc.h b/hw/fdc.h
index 09f73c6..506feb6 100644
--- a/hw/fdc.h
+++ b/hw/fdc.h
@@ -7,14 +7,15 @@
/* fdc.c */
#define MAX_FD 2
-static inline void fdctrl_init_isa(DriveInfo **fds)
+static inline ISADevice *fdctrl_init_isa(DriveInfo **fds)
{
ISADevice *dev;
dev = isa_try_create("isa-fdc");
if (!dev) {
- return;
+ return NULL;
}
+
if (fds[0]) {
qdev_prop_set_drive_nofail(&dev->qdev, "driveA", fds[0]->bdrv);
}
@@ -22,10 +23,14 @@ static inline void fdctrl_init_isa(DriveInfo **fds)
qdev_prop_set_drive_nofail(&dev->qdev, "driveB", fds[1]->bdrv);
}
qdev_init_nofail(&dev->qdev);
+
+ return dev;
}
void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
target_phys_addr_t mmio_base, DriveInfo **fds);
void sun4m_fdctrl_init(qemu_irq irq, target_phys_addr_t io_base,
DriveInfo **fds, qemu_irq *fdc_tc);
+void fdc_get_bs(BlockDriverState *bs[], ISADevice *dev);
+
#endif
diff --git a/hw/pc.c b/hw/pc.c
index 14ce684..1d2b61e 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -333,12 +333,12 @@ static void pc_cmos_init_late(void *opaque)
void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
const char *boot_device,
- BusState *idebus0, BusState *idebus1,
+ ISADevice *floppy, BusState *idebus0, BusState *idebus1,
ISADevice *s)
{
int val, nb, nb_heads, max_track, last_sect, i;
FDriveType fd_type[2];
- DriveInfo *fd[2];
+ BlockDriverState *fd[MAX_FD];
static pc_cmos_init_late_arg arg;
/* various important CMOS locations needed by PC/Bochs bios */
@@ -380,14 +380,16 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
}
/* floppy type */
- for (i = 0; i < 2; i++) {
- fd[i] = drive_get(IF_FLOPPY, 0, i);
- if (fd[i] && bdrv_is_inserted(fd[i]->bdrv)) {
- bdrv_get_floppy_geometry_hint(fd[i]->bdrv, &nb_heads, &max_track,
- &last_sect, FDRIVE_DRV_NONE,
- &fd_type[i]);
- } else {
- fd_type[i] = FDRIVE_DRV_NONE;
+ if (floppy) {
+ fdc_get_bs(fd, floppy);
+ for (i = 0; i < 2; i++) {
+ if (fd[i] && bdrv_is_inserted(fd[i])) {
+ bdrv_get_floppy_geometry_hint(fd[i], &nb_heads, &max_track,
+ &last_sect, FDRIVE_DRV_NONE,
+ &fd_type[i]);
+ } else {
+ fd_type[i] = FDRIVE_DRV_NONE;
+ }
}
}
val = (cmos_get_fd_drive_type(fd_type[0]) << 4) |
@@ -1091,6 +1093,7 @@ static void cpu_request_exit(void *opaque, int irq, int level)
void pc_basic_device_init(qemu_irq *isa_irq,
ISADevice **rtc_state,
+ ISADevice **floppy,
bool no_vmport)
{
int i;
@@ -1155,7 +1158,7 @@ void pc_basic_device_init(qemu_irq *isa_irq,
for(i = 0; i < MAX_FD; i++) {
fd[i] = drive_get(IF_FLOPPY, 0, i);
}
- fdctrl_init_isa(fd);
+ *floppy = fdctrl_init_isa(fd);
}
void pc_pci_device_init(PCIBus *pci_bus)
diff --git a/hw/pc.h b/hw/pc.h
index 6d5730b..24b7fe2 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -138,11 +138,12 @@ qemu_irq *pc_allocate_cpu_irq(void);
void pc_vga_init(PCIBus *pci_bus);
void pc_basic_device_init(qemu_irq *isa_irq,
ISADevice **rtc_state,
+ ISADevice **floppy,
bool no_vmport);
void pc_init_ne2k_isa(NICInfo *nd);
void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
const char *boot_device,
- BusState *ide0, BusState *ide1,
+ ISADevice *floppy, BusState *ide0, BusState *ide1,
ISADevice *s);
void pc_pci_device_init(PCIBus *pci_bus);
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 31552fd..b8e0841 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -89,6 +89,7 @@ static void pc_init1(ram_addr_t ram_size,
DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
BusState *idebus[MAX_IDE_BUS];
ISADevice *rtc_state;
+ ISADevice *floppy;
pc_cpus_init(cpu_model);
@@ -141,7 +142,7 @@ static void pc_init1(ram_addr_t ram_size,
}
/* init basic PC hardware */
- pc_basic_device_init(isa_irq, &rtc_state, xen_enabled());
+ pc_basic_device_init(isa_irq, &rtc_state, &floppy, xen_enabled());
for(i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
@@ -170,7 +171,7 @@ static void pc_init1(ram_addr_t ram_size,
audio_init(isa_irq, pci_enabled ? pci_bus : NULL);
pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device,
- idebus[0], idebus[1], rtc_state);
+ floppy, idebus[0], idebus[1], rtc_state);
if (pci_enabled && usb_enabled) {
usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
--
1.7.11.2
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