QEMU-Nyx-fork

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Stefan Hajnoczi da888d37b0 block/raw-posix: detect readonly Linux block devices using BLKROGET

Linux block devices can be set read-only with "blockdev --setro
<device>".  The same thing can be done for LVM volumes using "lvchange
--permission r <volume>".  This read-only setting is independent of
device node permissions.  Therefore the device can still be opened
O_RDWR but actual writes will fail.

This results in odd behavior for QEMU.  bdrv_open() is supposed to fail
if a read-only image is being opened with BDRV_O_RDWR.  By not failing
for Linux block devices, the guest boots up but every write produces an
I/O error.

This patch checks whether the block device is read-only so that Linux
block devices behave like regular files.

Reported-by: Sibiao Luo <sluo@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

2013-02-12 12:22:49 +01:00

audio

audio: Replace non-portable asprintf in debug code by g_strdup_printf

2013-01-16 12:03:26 -06:00

backends

Make all static TypeInfos const

2013-01-10 15:11:53 -06:00

block

block/raw-posix: detect readonly Linux block devices using BLKROGET

2013-02-12 12:22:49 +01:00

bsd-user

linux-user: bsd-user: Don't reset X86CPU twice

2013-02-01 01:35:43 +01:00

default-configs

Add TEWS TPCI200 IndustryPack emulation

2013-01-14 13:26:12 -06:00

disas

build: remove universal-obj-y

2013-01-26 13:15:35 +00:00

docs

trace: Fix location of simpletrace.py in docs

2013-02-05 21:52:55 +01:00

fpu

softfloat: Handle float_muladd_negate_c when product is zero

2013-01-26 13:22:09 +00:00

fsdev

virtfs-proxy-helper: Fix unchecked strdup() by conv. to g_strdup()

2013-01-30 11:14:46 +01:00

gdb-xml

gdb-xml: fix hacks in powerpc register numbering

2009-07-12 23:42:05 +02:00

error: Strip trailing '\n' from error string arguments (again)

2013-02-11 08:13:19 -06:00

include

bswap: Fix width of swap in leul_to_cpu

2013-02-06 08:29:21 -06:00

ldscripts

build: create ldscripts/

2012-12-19 08:29:06 +01:00

libcacard

libcacard: Fix unchecked strdup() by converting to g_strdup()

2013-01-30 11:14:46 +01:00

linux-headers

Update Linux kernel headers

2013-01-18 19:06:57 +01:00

linux-user

Merge branch 'for-linux-user' of https://git.gitorious.org/qemu-m68k/qemu-m68k into staging

2013-02-06 16:39:04 -06:00

net

net: fix infinite loop on exit

2013-02-07 13:13:39 -06:00

pc-bios

Update OpenBIOS images

2013-02-09 13:39:45 +00:00

pixman @ 97336fad32

qapi: move include files to include/qobject/

2012-12-19 08:31:31 +01:00

qapi

qapi: Fix unchecked strdup() by converting to g_strdup()

2013-01-30 11:14:46 +01:00

qga

qemu-ga: Fix unchecked strdup() by converting to g_strdup()

2013-01-30 11:14:46 +01:00

QMP

qmp: add pull_event function

2012-10-24 10:26:22 +02:00

qobject

build: move qobject files to qobject/ and libqemuutil.a

2013-01-12 18:42:50 +01:00

qom

qom: remove object_delete

2013-02-01 15:53:11 -06:00

roms

Update OpenBIOS images

2013-02-09 13:39:45 +00:00

scripts

Merge remote-tracking branch 'qemu-kvm/uq/master' into staging

2013-01-29 16:57:41 -06:00

slirp

g_strdup(NULL) returns NULL; simplify

2013-01-30 11:14:46 +01:00

stubs

stubs: fully replace qemu-tool.c and qemu-user.c

2013-01-12 17:19:08 +01:00

sysconfigs/target

Eliminate cpus-x86_64.conf file

2012-09-21 15:12:58 +02:00

target-alpha

target-alpha: Catch attempt to instantiate abstract type in cpu_init()

2013-01-27 23:33:34 +01:00

target-arm

target-arm: Rename CPU types

2013-01-30 16:03:57 +00:00

target-cris

target-cris: Build fix for debug output

2013-02-04 16:12:57 +01:00

target-i386

error: Strip trailing '\n' from error string arguments (again)

2013-02-11 08:13:19 -06:00

target-lm32

cpu: Move cpu_index field to CPUState

2013-01-15 04:09:13 +01:00

target-m68k

target-m68k: Fix comment

2013-02-06 15:52:07 +01:00

target-microblaze

target-microblaze: Mark as unmigratable

2013-02-01 01:35:21 +01:00

target-mips

target-mips: enable access to DSP ASE if implemented

2013-01-31 23:42:03 +01:00

target-openrisc

target-openrisc: Rename CPU subtypes

2013-02-01 01:35:43 +01:00

target-ppc

error: Strip trailing '\n' from error string arguments (again)

2013-02-11 08:13:19 -06:00

target-s390x

target-s390x: Fix wrong comparison in interrupt handling

2013-02-04 15:24:15 -06:00

target-sh4

target-sh4: Mark as unmigratable

2013-02-01 01:35:22 +01:00

target-sparc

cpu: do not use object_delete

2013-02-01 15:53:11 -06:00

target-unicore32

target-unicore32: Rename CPU subtypes

2013-02-01 01:35:43 +01:00

target-xtensa

target-xtensa: Mark as unmigratable

2013-02-01 01:35:21 +01:00

tcg

tcg/target-arm: Add missing parens to assertions

2013-01-19 10:27:45 +00:00

tests

libi2c-omap: Fix endianness dependency

2013-02-11 13:22:48 -06:00

trace

trace: Clean up the "try to update atomic until it worked" loops

2013-02-05 21:52:55 +01:00

error: Strip trailing '\n' from error string arguments (again)

2013-02-11 08:13:19 -06:00

util

qemu-option: Disable two helpful messages that got broken recently

2013-02-11 08:13:19 -06:00

.exrc

qemu: add .exrc

2012-09-07 09:02:44 +03:00

.gitignore

Add libcacard/trace/generated-tracers.c to .gitignore

2013-01-15 10:34:54 +01:00

.gitmodules

pixman: add submodule

2012-11-01 13:10:06 +01:00

.mailmap

Add a .mailmap to map pre-git-conversion authors to friendly names

2011-12-12 17:06:21 -06:00

aio-posix.c

aio: Fix return value of aio_poll()

2013-01-17 10:51:42 +01:00

aio-win32.c

aio: Fix return value of aio_poll()

2013-01-17 10:51:42 +01:00

arch_init.c

Allow XBZRLE decoding without enabling the capability

2013-02-01 08:32:21 +01:00

async.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

balloon.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

block-migration.c

block-migration: fix block_save_iterate() return value

2013-02-11 08:14:05 -06:00

block.c

block: Fix is_allocated_above with resized files

2013-02-01 14:58:28 +01:00

blockdev-nbd.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

blockdev.c

Merge remote-tracking branch 'kwolf/for-anthony' into staging

2013-01-28 14:46:45 -06:00

blockjob.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

bt-host.c

softmmu: move remaining include files to include/ subdirectories

2012-12-19 08:32:46 +01:00

bt-vhci.c

softmmu: move remaining include files to include/ subdirectories

2012-12-19 08:32:46 +01:00

Changelog

fix some common typos

2012-05-14 07:27:24 +02:00

cmd.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

cmd.h

Delete useless 'extern' qualifiers for functions

2011-01-23 16:21:20 +00:00

CODING_STYLE

Replace Qemu by QEMU in internal documentation

2012-04-07 13:58:25 +00:00

configure

configure: Fix build with XFree

2013-02-06 08:29:21 -06:00

COPYING

COPYING: update from FSF

2008-10-12 17:54:42 +00:00

COPYING.LIB

Update FSF address in GPL/LGPL boilerplate

2009-01-04 22:05:52 +00:00

coroutine-gthread.c

block: move include files to include/block/

2012-12-19 08:31:31 +01:00

coroutine-sigaltstack.c

block: move include files to include/block/

2012-12-19 08:31:31 +01:00

coroutine-ucontext.c

gcc: rename CONFIG_PRAGMA_DISABLE_UNUSED_BUT_SET to CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE

2013-01-12 12:42:53 +00:00

coroutine-win32.c

block: move include files to include/block/

2012-12-19 08:31:31 +01:00

cpu-exec.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

cpus.c

kvm: Pass CPUState to kvm_on_sigbus_vcpu()

2013-01-28 16:57:56 +01:00

cputlb.c

exec: move include files to include/exec/

2012-12-19 08:31:31 +01:00

device_tree.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

disas.c

monitor: move include files to include/monitor/

2012-12-19 08:31:32 +01:00

dma-helpers.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

dump-stub.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

dump.c

exec: change RAM list to a TAILQ

2012-12-20 23:08:47 +01:00

exec.c

Replace non-portable asprintf by g_strdup_printf

2013-01-19 10:24:43 +00:00

gdbstub.c

cpu: Move cpu_index field to CPUState

2013-01-15 04:09:13 +01:00

HACKING

HACKING: List areas where we may rely on impdef C behaviour

2012-12-08 14:27:40 +00:00

hmp-commands.hx

hmp: Disable chardev-add and chardev-remove

2013-02-06 16:35:43 -06:00

hmp.c

error: Strip trailing '\n' from error string arguments (again)

2013-02-11 08:13:19 -06:00

hmp.h

qemu-char: Saner naming of memchar stuff & doc fixes

2013-02-06 16:35:19 -06:00

iohandler.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

ioport.c

exec: move include files to include/exec/

2012-12-19 08:31:31 +01:00

kvm-all.c

kvm: Pass CPUState to kvm_on_sigbus_vcpu()

2013-01-28 16:57:56 +01:00

kvm-stub.c

kvm: Pass CPUState to kvm_on_sigbus_vcpu()

2013-01-28 16:57:56 +01:00

LICENSE

LICENSE: There is no libqemu.a anymore

2011-12-09 11:25:22 +00:00

main-loop.c

Check return values from g_poll and select

2013-01-09 11:03:05 -06:00

MAINTAINERS

prep: Move PReP machine to hw/ppc/

2013-01-30 10:42:29 +01:00

Makefile

build: remove *.lo, *.a, *.la files from all subdirectories on make clean

2013-01-26 13:30:00 +00:00

Makefile.objs

Move XBZRLE encoding code to a separate file to allow testing

2013-02-01 08:32:20 +01:00

Makefile.target

build: remove universal-obj-y

2013-01-26 13:15:35 +00:00

memory_mapping-stub.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

memory_mapping.c

exec: change RAM list to a TAILQ

2012-12-20 23:08:47 +01:00

memory.c

bitops: unify bitops_ffsl with the one in host-utils.h, call it bitops_ctzl

2013-02-02 20:16:00 +00:00

migration-exec.c

migration: make writes blocking

2012-12-20 23:09:25 +01:00

migration-fd.c

migration: make writes blocking

2012-12-20 23:09:25 +01:00

migration-tcp.c

migration: make writes blocking

2012-12-20 23:09:25 +01:00

migration-unix.c

migration: make writes blocking

2012-12-20 23:09:25 +01:00

migration.c

migration: restrict scope of incoming fd read handler

2013-02-11 13:22:52 -06:00

monitor.c

HMP: add sub command table to info

2013-01-17 10:24:52 -02:00

nbd.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

os-posix.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

os-win32.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

page_cache.c

migration: move include files to include/migration/

2012-12-19 08:31:32 +01:00

qapi-schema-test.json

qapi: add struct-errors test case to test-qmp-output-visitor

2012-03-27 09:11:00 -03:00

qapi-schema.json

qapi: Improve chardev-add documentation

2013-02-11 13:22:52 -06:00

qdict-test-data.txt

Introduce QDict test data file

2009-09-04 09:37:34 -05:00

qemu-bridge-helper.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

qemu-char.c

error: Strip trailing '\n' from error string arguments (again)

2013-02-11 08:13:19 -06:00

qemu-coroutine-io.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

qemu-coroutine-lock.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

qemu-coroutine-sleep.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

qemu-coroutine.c

block: move include files to include/block/

2012-12-19 08:31:31 +01:00

qemu-doc.texi

Documentation: Update image format information

2012-11-30 11:33:24 +01:00

qemu-img-cmds.hx

qemu-img: document 'info --backing-chain'

2012-10-24 10:26:19 +02:00

qemu-img.c

qemu-img: report size overflow error message

2013-01-02 16:08:56 +01:00

qemu-img.texi

Documentation: Update image format information

2012-11-30 11:33:24 +01:00

qemu-io.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

qemu-log.c

qemu-log: Plug trivial memory leak in cpu_set_log_filename()

2013-01-30 11:14:46 +01:00

qemu-nbd.c

block: move include files to include/block/

2012-12-19 08:31:31 +01:00

qemu-nbd.texi

qemu-nbd: document --cache and --aio options

2013-02-08 11:14:19 -06:00

qemu-options-wrapper.h

vl.c: In qemu -h output, only print options for the arch we are running as

2011-12-19 10:27:33 -06:00

qemu-options.h

vl.c: Move option generation logic into a wrapper file

2011-12-19 10:27:33 -06:00

qemu-options.hx

qemu-char: Saner naming of memchar stuff & doc fixes

2013-02-06 16:35:19 -06:00

qemu-seccomp.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

qemu-tech.texi

qemu-tech.texi: update implemented xtensa features list

2012-11-29 13:00:52 -06:00

qemu-timer.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

qemu.sasl

Add SASL authentication support ("Daniel P. Berrange")

2009-03-06 20:27:28 +00:00

qmp-commands.hx

qemu-char: Saner naming of memchar stuff & doc fixes

2013-02-06 16:35:19 -06:00

qmp.c

softmmu: move remaining include files to include/ subdirectories

2012-12-19 08:32:46 +01:00

qtest.c

qtest: Use strtoull() for uint64_t

2013-02-11 13:22:39 -06:00

readline.c

readline: Fix unchecked strdup() by converting to g_strdup()

2013-01-30 11:14:46 +01:00

README

Update README

2011-12-11 17:50:43 -06:00

rules.mak

rules/mak: make clean should blow away timestamp files

2013-01-30 01:31:08 +02:00

savevm.c

migration: restrict scope of incoming fd read handler

2013-02-11 13:22:52 -06:00

spice-qemu-char.c

Merge remote-tracking branch 'bonzini/header-dirs' into staging

2012-12-19 17:15:39 -06:00

tcg-runtime.c

tcg: add div/rem 32-bit helpers

2010-03-14 22:04:50 +01:00

tci.c

exec: move include files to include/exec/

2012-12-19 08:31:31 +01:00

thread-pool.c

misc: move include files to include/qemu/

2012-12-19 08:32:39 +01:00

thunk.c

exec: move include files to include/exec/

2012-12-19 08:31:31 +01:00

TODO

Update

2008-12-04 11:29:42 +00:00

trace-events

s390: Add new channel I/O based virtio transport.

2013-01-29 21:50:04 +01:00

translate-all.c

translate-all.c: Use tb1->phys_hash_next directly in tb_remove

2012-12-22 12:06:24 +00:00

translate-all.h

exec: move TB handling to translate-all.c

2012-12-16 08:28:41 +00:00

user-exec.c

Merge remote-tracking branch 'bonzini/header-dirs' into staging

2012-12-19 17:15:39 -06:00

VERSION

Update version for release

2013-02-06 18:33:47 -06:00

version.rc

mingw: add version information to the executables

2010-09-26 16:07:57 +00:00

vl.c

vl: Exit unsuccessfully on option argument syntax error

2013-02-11 08:13:19 -06:00

xbzrle.c

Move XBZRLE encoding code to a separate file to allow testing

2013-02-01 08:32:20 +01:00

xen-all.c

xen: Simplify halting of first CPU

2013-01-15 04:09:14 +01:00

xen-mapcache.c

softmmu: move include files to include/sysemu/

2012-12-19 08:32:45 +01:00

xen-stub.c

exec: move include files to include/exec/

2012-12-19 08:31:31 +01:00

README

Read the documentation in qemu-doc.html or on http://wiki.qemu.org

- QEMU team