Peter Maydell 8ec7368c8f linux-user: make pwrite64/pread64(fd, NULL, 0, offset) return 0 ...

Linux returns success if pwrite64() or pread64() are called with a
zero length NULL buffer, but QEMU was returning -TARGET_EFAULT.

This is the same bug that we fixed in commit 58cfa6c2e6
for the write syscall, and long before that in 38d840e679
for the read syscall.

Fixes: https://bugs.launchpad.net/qemu/+bug/1810433

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190108184900.9654-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
(cherry picked from commit 2bd3f8998e)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

2019-03-27 20:05:38 -05:00

..

aarch64

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

alpha

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

arm

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

cris

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

generic

linux-user: move generic signal definitions to generic/signal.h

2018-06-04 01:30:44 +02:00

host

linux-user: ppc64: don't use volatile register during safe_syscall

2018-07-31 09:57:43 +02:00

hppa

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

i386

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

m68k

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

microblaze

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

mips

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

mips64

linux-user: Add prctl() PR_SET_FP_MODE and PR_GET_FP_MODE implementations

2018-10-29 15:50:31 +01:00

nios2

linux-user: Clean up nios2 main loop signal handling

2018-11-12 16:02:10 +01:00

openrisc

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

ppc

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

riscv

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

s390x

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

sh4

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

sparc

linux-user/sparc/signal.c: Remove dead code

2018-11-15 13:06:40 +00:00

sparc64

linux-user/sparc64: Add inotify_rm_watch and tee syscalls

2018-06-11 14:47:45 +02:00

tilegx

linux-user: move generic signal definitions to generic/signal.h

2018-06-04 01:30:44 +02:00

x86_64

linux-user: move generic signal definitions to generic/signal.h

2018-06-04 01:30:44 +02:00

xtensa

linux-user: Don't call gdb_handlesig() before queue_signal()

2018-11-12 15:48:00 +01:00

cpu_loop-common.h

linux-user: create a dummy per arch cpu_loop.c

2018-04-30 09:47:55 +02:00

elfload.c

linux-user: Read and set FP ABI value from MIPS abiflags

2018-10-29 15:50:31 +01:00

errno_defs.h

linux-user: Handle ERFKILL and EHWPOISON

2017-01-22 18:14:10 -08:00

exit.c

linux-user: add gcov support to preexit_cleanup

2018-07-05 15:59:41 +01:00

fd-trans.c

linux-user: move TargetFdTrans functions to their own file

2018-09-25 22:36:47 +02:00

fd-trans.h

linux-user: move TargetFdTrans functions to their own file

2018-09-25 22:36:47 +02:00

flat.h

…

flatload.c

linux-user/flatload: fix initial stack pointer alignment

2018-10-30 11:23:32 -07:00

ioctls.h

linux-user: Implement special usbfs ioctls.

2018-10-19 14:05:10 +02:00

linux_loop.h

linux-user: Add loop control ioctls

2016-07-19 15:22:33 +03:00

linuxload.c

linux-user: Clean up includes

2016-01-29 15:07:22 +00:00

m68k-sim.c

linux-user: Clean up includes

2016-01-29 15:07:22 +00:00

main.c

qom: convert the CPU list to RCU

2018-08-23 18:46:25 +02:00

Makefile.objs

linux-user: move TargetFdTrans functions to their own file

2018-09-25 22:36:47 +02:00

mmap.c

linux-user/mmap.c: handle invalid len maps correctly

2018-07-31 09:57:25 +02:00

qemu.h

Merge remote-tracking branch 'remotes/vivier2/tags/qemu-trivial-for-3.1-pull-request' into staging

2018-10-30 15:49:55 +00:00

safe-syscall.S

linux-user: Provide safe_syscall for fixing races between signals and syscalls

2016-05-27 14:49:51 +03:00

signal-common.h

linux-user: introduce target_sigsp() and target_save_altstack()

2018-05-03 18:29:15 +02:00

signal.c

linux-user: Implement signals for openrisc

2018-07-03 22:40:33 +09:00

socket.h

linux-user: update ARCH_HAS_SOCKET_TYPES use

2018-05-25 10:10:55 +02:00

strace.c

linux-user: Add support for SO_REUSEPORT

2018-11-12 16:38:26 +01:00

strace.list

linux-user/strace: Improve recvmsg() output

2018-07-03 16:27:15 +02:00

syscall_defs.h

linux-user: Implement special usbfs ioctls.

2018-10-19 14:05:10 +02:00

syscall_types.h

linux-user: Implement special usbfs ioctls.

2018-10-19 14:05:10 +02:00

syscall.c

linux-user: make pwrite64/pread64(fd, NULL, 0, offset) return 0

2019-03-27 20:05:38 -05:00

target_flat.h

…

trace-events

trace-events: fix code style: print 0x before hex numbers

2017-08-01 12:13:07 +01:00

uaccess.c

util: move declarations out of qemu-common.h

2016-03-22 22:20:17 +01:00

uname.c

linux-user: Clean up includes

2016-01-29 15:07:22 +00:00

uname.h

Clean up decorations and whitespace around header guards

2016-07-12 16:20:46 +02:00

vm86.c

linux-user: Clean up includes

2016-01-29 15:07:22 +00:00