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linux-user: Fix mq_open() syscall support 

Conversion of file creation flags (O_CREAT, ...) from target to host
was missing.

Also, this patch implements better error handling.

Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Aleksandar Markovic 2016-09-22 18:56:55 +02:00 committed by Riku Voipio
parent 19f59bcef9
commit c7536ab679
1 changed files with 10 additions and 8 deletions
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18
linux-user/syscall.c
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@ -11457,16 +11457,18 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open)
case TARGET_NR_mq_open:
{
struct mq_attr posix_mq_attr, *attrp;
struct mq_attr posix_mq_attr;
int host_flags;
p = lock_user_string(arg1 - 1);
if (arg4 != 0) {
copy_from_user_mq_attr (&posix_mq_attr, arg4);
attrp = &posix_mq_attr;
} else {
attrp = 0;
host_flags = target_to_host_bitmask(arg2, fcntl_flags_tbl);
if (copy_from_user_mq_attr(&posix_mq_attr, arg4) != 0) {
goto efault;
}
ret = get_errno(mq_open(p, arg2, arg3, attrp));
p = lock_user_string(arg1 - 1);
if (!p) {
goto efault;
}
ret = get_errno(mq_open(p, host_flags, arg3, &posix_mq_attr));
unlock_user (p, arg1, 0);
}
break;