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| author | Laurent Vivier <laurent@vivier.eu> | 2017-03-01 10:37:47 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2017-05-29 14:56:07 +0300 |
| commit | 04b9bcf911af2b4563b1f1b2e8a103b796dcc9eb (patch) | |
| tree | a56d1bd8030568855ba011d554fc58add82dd250 /linux-user/syscall.c | |
| parent | 9964e96dc9999cf7f7c936ee854a795415d19b60 (diff) | |
| download | qemu-04b9bcf911af2b4563b1f1b2e8a103b796dcc9eb.zip qemu-04b9bcf911af2b4563b1f1b2e8a103b796dcc9eb.tar.gz qemu-04b9bcf911af2b4563b1f1b2e8a103b796dcc9eb.tar.bz2 | |
linux-user: call fd_trans_target_to_host_data() for write()
As for sendmsg() or sendto(), we must call the target to
host data translator if it is defined. This is needed for
eventfd(): the write() syscall allows to add a value to
the internal counter, and so, it must be byte-swapped to
the host order.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user/syscall.c')
| -rw-r--r-- | linux-user/syscall.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index cec8428..b2b563e 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -7767,7 +7767,17 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, case TARGET_NR_write: if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) goto efault; - ret = get_errno(safe_write(arg1, p, arg3)); + if (fd_trans_target_to_host_data(arg1)) { + void *copy = g_malloc(arg3); + memcpy(copy, p, arg3); + ret = fd_trans_target_to_host_data(arg1)(copy, arg3); + if (ret >= 0) { + ret = get_errno(safe_write(arg1, copy, ret)); + } + g_free(copy); + } else { + ret = get_errno(safe_write(arg1, p, arg3)); + } unlock_user(p, arg2, 0); break; #ifdef TARGET_NR_open |