Michael Tokarev
11de247707
linux-user: assume inotify sycalls are always present
...
inotify_init() and other syscalls appeared in linux 2.6.13,
inotify_init1() - in linux 2.6.27.
There's no need to check their presence on linux anymore.
Keep condition on TARGET_NR_inotify_init because modern
architectures have only more generic inotify_init1().
Other, not linux-specific, places of the code checks for
inotify_init1() syscall only.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru >
2026-03-16 13:50:17 +03:00
Geoffrey Thomas
e4e839b2ee
linux-user: Hold the fd-trans lock across fork
...
If another thread is holding target_fd_trans_lock during a fork,
then the lock becomes permanently locked in the child and the
emulator deadlocks at the next interaction with the fd-trans table.
As with other locks, acquire the lock in fork_start() and release
it in fork_end().
Cc: qemu-stable@nongnu.org
Signed-off-by: Geoffrey Thomas <geofft@ldpreload.com >
Fixes: c093364f4dhttps://gitlab.com/qemu-project/qemu/-/issues/2846
Buglink: https://github.com/astral-sh/uv/issues/6105
Reviewed-by: Richard Henderson <richard.henderson@linaro.org >
Signed-off-by: Richard Henderson <richard.henderson@linaro.org >
Message-ID: <20250314124742.4965-1-geofft@ldpreload.com >
2025-07-10 13:49:03 -06:00
Mathis Marion
d759a62b12
linux-user: fix timerfd read endianness conversion
...
When reading the expiration count from a timerfd, the endianness of the
64bit value read is the one of the host, just as for eventfds.
Signed-off-by: Mathis Marion <mathis.marion@silabs.com >
Reviewed-by: Laurent Vivier <laurent@vivier.eu >
Message-Id: <20230220085822.626798-2-Mathis.Marion@silabs.com >
Signed-off-by: Laurent Vivier <laurent@vivier.eu >
2023-03-10 20:42:00 +01:00
Owen Anderson
c093364f4d
fd-trans: Fix race condition on reallocation of the translation table.
...
The mapping from file-descriptors to translator functions is not guarded
on realloc which may cause invalid function pointers to be read from a
previously deallocated mapping.
Signed-off-by: Owen Anderson <oanderso@google.com >
Reviewed-by: Laurent Vivier <laurent@vivier.eu >
Message-Id: <20210701221255.107976-1-oanderso@google.com >
Signed-off-by: Laurent Vivier <laurent@vivier.eu >
2021-07-12 21:54:46 +02:00
Laurent Vivier
f7e6a401fe
linux-user: move TargetFdTrans functions to their own file
...
This will ease to move out syscall functions from syscall.c
Signed-off-by: Laurent Vivier <laurent@vivier.eu >
Reviewed-by: Richard Henderson <richard.henderson@linaro.org >
Message-Id: <20180823222215.13781-1-laurent@vivier.eu >
2018-09-25 22:36:47 +02:00
