Frédéric Fortier 13e340c886 linux-user: NETLINK_LIST_MEMBERSHIPS: Allow bad ptr if its length is 0 ...

getsockopt(fd, SOL_NETLINK, NETLINK_LIST_MEMBERSHIPS, *optval, *optlen)
syscall allows optval to be NULL/invalid if optlen points to a size of
zero. This allows userspace to query the length of the array they should
use to get the full membership list before allocating memory for said
list, then re-calling getsockopt with proper optval/optlen arguments.

Notable users of this pattern include systemd-networkd, which in the
(albeit old) version 237 tested, cannot start without this fix.

Signed-off-by: Frédéric Fortier <frf@ghgsat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210328180135.88449-1-frf@ghgsat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

2021-03-29 21:56:18 +02:00

..

aarch64

semihosting: Move include/hw/semihosting/ -> include/semihosting/

2021-03-10 15:34:12 +00:00

alpha

linux-user: target: signal: Support TARGET_SS_AUTODISARM

2021-02-13 22:50:50 +01:00

arm

semihosting: Move include/hw/semihosting/ -> include/semihosting/

2021-03-10 15:34:12 +00:00

cris

linux user: Fix Lesser GPL version number

2020-11-15 16:41:26 +01:00

generic

linux-user: target: signal: Support TARGET_SS_AUTODISARM

2021-02-13 22:50:50 +01:00

hexagon

Hexagon (linux-user/hexagon) Linux user emulation

2021-02-18 07:48:22 -08:00

host

linux-user/: fix some comment spelling errors

2020-09-17 20:39:22 +02:00

hppa

linux-user: Use cpu_untagged_addr in access_ok; split out *_untagged

2021-02-16 11:04:53 +00:00

i386

linux-user: Use cpu_untagged_addr in access_ok; split out *_untagged

2021-02-16 11:04:53 +00:00

m68k

linux-user: Correct definition of stack_t

2020-11-11 10:59:39 +01:00

microblaze

linux user: Fix Lesser GPL version number

2020-11-15 16:41:26 +01:00

mips

linux-user: target: signal: Support TARGET_SS_AUTODISARM

2021-02-13 22:50:50 +01:00

mips64

linux-user/mips: Support the n32 ABI for the R5900

2021-02-15 12:10:03 +01:00

nios2

linux user: Fix Lesser GPL version number

2020-11-15 16:41:26 +01:00

openrisc

linux-user: update syscall_nr.h to Linux 5.9-rc7

2020-10-26 11:39:23 +01:00

ppc

exec: Use cpu_untagged_addr in g2h; split out g2h_untagged

2021-02-16 11:04:53 +00:00

riscv

linux-user/riscv: initialise the TaskState heap/stack info

2021-03-24 14:25:16 +00:00

s390x

linux-user/s390x: Use the guest pointer for the sigreturn stub

2021-03-25 20:55:07 +01:00

sh4

accel/tcg: Precompute curr_cflags into cpu->tcg_cflags

2021-03-06 11:53:57 -08:00

sparc

linux-user: target: signal: Support TARGET_SS_AUTODISARM

2021-02-13 22:50:50 +01:00

sparc64

linux user: Fix Lesser GPL version number

2020-11-15 16:41:26 +01:00

x86_64

linux user: Fix Lesser GPL version number

2020-11-15 16:41:26 +01:00

xtensa

linux-user: update syscall.tbl to Linux 5.9-rc7

2020-10-26 11:39:23 +01:00

cpu_loop-common.h

cpu: Replace ENV_GET_CPU with env_cpu

2019-06-10 07:03:34 -07:00

elfload.c

linux-user/elfload: fix address calculation in fallback scenario

2021-03-13 10:45:11 +01:00

errno_defs.h

Supply missing header guards

2019-06-12 13:20:21 +02:00

exit.c

gdbstub: drop CPUEnv from gdb_exit()

2021-01-18 10:05:06 +00:00

fd-trans.c

linux-user,netlink: add IFLA_BRPORT_MRP_RING_OPEN, IFLA_BRPORT_MRP_IN_OPEN

2020-11-17 15:22:52 +01:00

fd-trans.h

linux-user: move TargetFdTrans functions to their own file

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

flat.h

linux-user/: fix some comment spelling errors

2020-09-17 20:39:22 +02:00

flatload.c

exec: Use cpu_untagged_addr in g2h; split out g2h_untagged

2021-02-16 11:04:53 +00:00

ioctls.h

linux-user: Conditionalize TUNSETVNETLE

2021-01-07 05:09:06 -10:00

linux_loop.h

linux-user: Add loop control ioctls

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

linuxload.c

avoid TABs in files that only contain a few

2019-01-11 15:46:56 +01:00

main.c

linux-user: manage binfmt-misc preserve-arg[0] flag

2021-03-13 10:45:11 +01:00

meson.build

semihosting: Move ARM semihosting code to shared directories

2021-01-18 10:05:06 +00:00

mmap.c

linux-user/aarch64: Implement PROT_MTE

2021-02-16 13:08:46 +00:00

qemu.h

Hexagon (linux-user/hexagon) Linux user emulation

2021-02-18 07:48:22 -08:00

safe-syscall.S

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

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

semihost.c

semihosting: Move include/hw/semihosting/ -> include/semihosting/

2021-03-10 15:34:12 +00:00

signal-common.h

linux-user: Make sigaltstack stacks per-thread

2019-07-26 19:24:33 +02:00

signal.c

linux-user/signal: Decode waitid si_code

2021-02-13 22:50:49 +01:00

socket.h

Supply missing header guards

2019-06-12 13:20:21 +02:00

strace.c

linux-user: Add IPv6 options to do_print_sockopt()

2021-01-21 13:27:08 +01:00

strace.list

linux-user: Add strace support for printing arguments of some clock and time functions

2020-08-27 12:29:50 +02:00

syscall_defs.h

Remove deprecated target tilegx

2021-03-09 11:26:32 +01:00

syscall_types.h

linux-user: Add support for btrfs ioctls used to scrub a filesystem

2020-09-03 01:09:35 +02:00

syscall.c

linux-user: NETLINK_LIST_MEMBERSHIPS: Allow bad ptr if its length is 0

2021-03-29 21:56:18 +02:00

target_flat.h

Supply missing header guards

2019-06-12 13:20:21 +02:00

trace-events

linux-user: fix use of SIGRTMIN

2020-02-12 18:56:41 +01:00

trace.h

trace: switch position of headers to what Meson requires

2020-08-21 06:18:24 -04:00

uaccess.c

linux-user: Handle tags in lock_user/unlock_user

2021-02-16 13:06:11 +00:00

uname.c

cpu: Replace ENV_GET_CPU with env_cpu

2019-06-10 07:03:34 -07:00

uname.h

Clean up decorations and whitespace around header guards

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

vm86.c

linux-user: Use `qemu_log' for non-strace logging

2020-02-19 11:17:40 +01:00