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linux-user: correctly align target_epoll_event 

According to comments in /usr/include/linux/eventpoll.h,
poll_event is packed only on x86_64.

And to be sure fields are correctly aligned in epoll_data,
use abi_XXX types for all of them.

Moreover, fd type is wrong: fd is int, not ulong.

This has been tested with a ppc guest on an x86_64 host:
without this patch, systemd crashes (core).

CC: Alexander Graf <agraf@suse.de>
CC: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Laurent Vivier 2015-10-03 17:14:06 +02:00 committed by Riku Voipio
parent e36800c91a
commit 928bed6a05
1 changed files with 11 additions and 8 deletions
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19
linux-user/syscall_defs.h
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@ -2514,20 +2514,23 @@ struct target_mq_attr {
#define FUTEX_CMD_MASK ~(FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME)
#ifdef CONFIG_EPOLL
#if defined(TARGET_X86_64)
#define TARGET_EPOLL_PACKED QEMU_PACKED
#else
#define TARGET_EPOLL_PACKED
#endif
typedef union target_epoll_data {
abi_ulong ptr;
abi_ulong fd;
uint32_t u32;
uint64_t u64;
abi_int fd;
abi_uint u32;
abi_ullong u64;
} target_epoll_data_t;
struct target_epoll_event {
uint32_t events;
#if defined(TARGET_ARM) || defined(TARGET_MIPS) || defined(TARGET_MIPS64)
uint32_t __pad;
#endif
abi_uint events;
target_epoll_data_t data;
} QEMU_PACKED;
} TARGET_EPOLL_PACKED;
#endif
struct target_rlimit64 {
uint64_t rlim_cur;