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Re: [Qemu-devel] [PATCH 7/7] Enable fork and MIPS64 specific changes in
From: |
Andreas Färber |
Subject: |
Re: [Qemu-devel] [PATCH 7/7] Enable fork and MIPS64 specific changes in mq_open syscall |
Date: |
Wed, 28 Sep 2011 09:38:11 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; de; rv:1.9.2.22) Gecko/20110907 SUSE/3.1.14 Thunderbird/3.1.14 |
Am 28.09.2011 06:38, schrieb address@hidden:
> From: Khansa Butt <address@hidden>
>
Please prefix the subject with "linux-user: ".
Where's the preceding 6 patches?
Patch description is missing.
> Signed-off-by: Khansa Butt <address@hidden>
> ---
> configure | 1 +
> linux-user/syscall.c | 11 +++++++++--
> 2 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/configure b/configure
> index 5e45a43..8d39fda 100755
> --- a/configure
> +++ b/configure
> @@ -3286,6 +3286,7 @@ case "$target_arch2" in
> TARGET_ARCH=mips64
> TARGET_BASE_ARCH=mips
> echo "TARGET_ABI_MIPSN64=y" >> $config_target_mak
> + target_nptl="yes"
How is this related to the mq_open syscall?
If it isn't, please put it into a separate patch.
> target_phys_bits=64
> target_long_alignment=8
> ;;
> diff --git a/linux-user/syscall.c b/linux-user/syscall.c
> index 6b73769..97ac9fb 100644
> --- a/linux-user/syscall.c
> +++ b/linux-user/syscall.c
> @@ -7799,10 +7799,17 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
> arg1,
> {
> struct mq_attr posix_mq_attr;
>
> +#if defined(TARGET_MIPS64)
> + arg2 = arg2 & 0xff;
> + arg2 = arg2 | 0x40;
What's 0x40? Please use a define or enum instead of the magic number.
I'd also humbly suggest to add inline comments (in addition to an
appropriate description above) to explain *why* this is necessary and
correct.
> +#endif
> +
> p = lock_user_string(arg1 - 1);
> - if (arg4 != 0)
> + if (arg4 != 0) {
> copy_from_user_mq_attr (&posix_mq_attr, arg4);
> - ret = get_errno(mq_open(p, arg2, arg3, &posix_mq_attr));
> + ret = get_errno(mq_open(p, arg2, arg3, &posix_mq_attr));
> + } else if (arg4 == 0)
> + ret = get_errno(mq_open(p, arg2, arg3, NULL));
Coding Style requires braces.
> unlock_user (p, arg1, 0);
> }
> break;
Andreas