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Christian Schoenebeck d2c5cf7ca1 9pfs: differentiate readdir lock between 9P2000.u vs. 9P2000.L 
Previous patch suggests that it might make sense to use a different mutex
type now while handling readdir requests, depending on the precise
protocol variant, as v9fs_do_readdir_with_stat() (used by 9P2000.u) uses
a CoMutex to avoid deadlocks that might happen with QemuMutex otherwise,
whereas do_readdir_many() (used by 9P2000.L) should better use a
QemuMutex, as the precise behaviour of a failed CoMutex lock on fs driver
side would not be clear.

And to avoid the wrong lock type being used, be now strict and error out
if a 9P2000.L client sends a Tread on a directory, and likeweise error out
if a 9P2000.u client sends a Treaddir request.

This patch is just intended as transitional measure, as currently 9P2000.u
vs. 9P2000.L implementations currently differ where the main logic of
fetching directory entries is located at (9P2000.u still being more top
half focused, while 9P2000.L already being bottom half focused in regards
to fetching directory entries that is).

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <9a2ddc347e533b0d801866afd9dfac853d2d4106.1596012787.git.qemu_oss@crudebyte.com>
Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
 		2020-08-12 09:17:32 +02:00
..
9pfs 9pfs: differentiate readdir lock between 9P2000.u vs. 9P2000.L 2020-08-12 09:17:32 +02:00
acpi ACPI: Assert that we don't run out of the preallocated memory 2020-07-27 16:12:10 +01:00
adc hw/adc/stm32f2xx_adc: Correct memory region size and access size 2020-06-05 17:23:09 +01:00
alpha sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
arm hw/arm/nrf51_soc: Set system_clock_scale 2020-08-03 17:55:31 +01:00
audio audio: set default value for pcspk.iobase property 2020-07-06 17:01:11 +02:00
avr hw/avr/boot: Fix memory leak in avr_load_firmware() 2020-07-21 16:13:04 +02:00
block qom: Change object_get_canonical_path_component() not to malloc 2020-07-21 16:23:43 +02:00
char hw/char: Convert the Ibex UART to use the registerfields API 2020-07-13 17:25:37 -07:00
core hw/pci-host: save/restore pci host config register 2020-07-27 10:24:39 -04:00
cpu error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
cris sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
display qxl: fix modular builds with dtrace 2020-07-21 10:56:47 +02:00
dma hw: Mark nd_table[] misuse in realize methods FIXME 2020-07-21 08:41:15 +02:00
gpio error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
hppa sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
hyperv error: Avoid unnecessary error_propagate() after error_setg() 2020-07-10 15:18:08 +02:00
i2c hw/i2c: Rename i2c_create_slave() as i2c_slave_create_simple() 2020-07-16 12:30:54 -05:00
i386 hw/pci-host: save/restore pci host config register 2020-07-27 10:24:39 -04:00
ide qom: Put name parameter before value / visitor parameter 2020-07-10 15:18:08 +02:00
input hw/input/virtio-input-hid.c: Don't undef CONFIG_CURSES 2020-07-24 16:15:28 +02:00
intc hw/intc/armv7m_nvic: Provide default "reset the system" behaviour for SYSRESETREQ 2020-08-03 17:55:03 +01:00
ipack qdev: Unrealize must not fail 2020-05-15 07:08:14 +02:00
ipmi ipmi: add SET_SENSOR_READING command 2020-07-17 11:39:46 -05:00
isa error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
lm32 sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
m68k qom: Put name parameter before value / visitor parameter 2020-07-10 15:18:08 +02:00
mem qom: Change object_get_canonical_path_component() not to malloc 2020-07-21 16:23:43 +02:00
microblaze error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
mips error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
misc hw/misc/aspeed_sdmc: Fix incorrect memory size 2020-07-27 16:12:10 +01:00
moxie hw: Make MachineClass::is_default a boolean type 2020-02-28 14:57:19 -05:00
net hw/net/net_tx_pkt: fix assertion failure in net_tx_pkt_add_raw_fragment() 2020-08-04 14:14:48 +08:00
nios2 hw/nios2: exit to main CPU loop only when unmasking interrupts 2020-07-13 14:36:11 +01:00
nubus hw: Remove unnecessary DEVICE() cast 2020-05-15 07:08:52 +02:00
nvram hw/nvram/fw_cfg: Let fw_cfg_add_from_generator() return boolean value 2020-07-21 16:47:54 +02:00
openrisc sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
pci hw/pci-host: save/restore pci host config register 2020-07-27 10:24:39 -04:00
pci-bridge sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
pci-host xen: Use ERRP_GUARD() 2020-07-10 15:18:09 +02:00
pcmcia sysbus: Convert to sysbus_realize() etc. with Coccinelle 2020-06-15 22:05:28 +02:00
ppc pseries: fix kvmppc_set_fwnmi() 2020-07-27 11:09:25 +10:00
rdma lockable: Replace locks with lock guard macros 2020-05-04 16:07:43 +01:00
riscv hw/riscv: sifive_e: Correct debug block size 2020-07-22 09:39:46 -07:00
rtc goldfish_rtc: Fix non-atomic read behaviour of TIME_LOW/TIME_HIGH 2020-07-22 09:39:46 -07:00
rx qom: Put name parameter before value / visitor parameter 2020-07-10 15:18:08 +02:00
s390x s390x/s390-virtio-ccw: fix off-by-one in loadparm getter 2020-07-30 16:53:34 +02:00
scsi error: Avoid error_propagate() after migrate_add_blocker() 2020-07-10 15:18:08 +02:00
sd sd/milkymist-memcard: Fix format string 2020-07-24 15:03:09 +02:00
semihosting semihosting: don't send the trailing '\0' 2020-07-27 09:40:08 +01:00
sh4 hw/sh4: Extract timer definitions to 'hw/timer/tmu012.h' 2020-06-22 18:37:12 +02:00
smbios error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
sparc qom: Put name parameter before value / visitor parameter 2020-07-10 15:18:08 +02:00
sparc64 qom: Put name parameter before value / visitor parameter 2020-07-10 15:18:08 +02:00
ssi ssi: Add ssi_realize_and_unref() 2020-07-03 16:59:44 +01:00
timer hw/timer/imx_epit: Avoid assertion when CR.SWR is written 2020-08-03 17:56:11 +01:00
tpm tpm: tpm_spapr: Exit on TPM backend failures 2020-07-15 14:57:33 -04:00
tricore hw: Do not initialize MachineClass::is_default to 0 2020-02-28 14:57:19 -05:00
unicore32 hw/unicore32/puv3: Use qemu_log_mask(ERROR) instead of debug printf() 2020-06-09 19:01:56 +02:00
usb hw: Only compile the usb-dwc2 controller if it is really needed 2020-07-24 16:15:28 +02:00
vfio vfio: fix use-after-free in display 2020-07-16 10:20:12 +02:00
virtio virtio-mem: Correct format specifier mismatch for RISC-V 2020-08-04 11:48:17 -04:00
watchdog hw/watchdog/cmsdk-apb-watchdog: Add trace event for lock status 2020-06-23 11:39:47 +01:00
xen osdep.h: Always include <sys/signal.h> if it exists 2020-07-13 14:36:09 +01:00
xenpv trivial: Remove xenfb_enabled from sysemu.h 2020-02-04 09:00:57 +01:00
xtensa qdev: Make qdev_prop_set_drive() match the other helpers 2020-06-23 16:07:07 +02:00
Kconfig hw/avr: Add limited support for some Arduino boards 2020-07-11 11:02:05 +02:00
Makefile.objs vga: build qxl as module 2020-07-07 15:33:59 +02:00