[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 03/11] linux-user/strace: add print_sockaddr_ptr
From: |
Laurent Vivier |
Subject: |
Re: [Qemu-devel] [PATCH 03/11] linux-user/strace: add print_sockaddr_ptr() to handle plain/pointer addrlen |
Date: |
Sat, 17 Feb 2018 19:10:08 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 |
Le 24/01/2018 à 14:01, Philippe Mathieu-Daudé a écrit :
> since this argument differs between sendto()/recvfrom()
>
> Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
> ---
> linux-user/strace.c | 17 +++++++++++++++--
> 1 file changed, 15 insertions(+), 2 deletions(-)
>
> diff --git a/linux-user/strace.c b/linux-user/strace.c
> index e7272f4ede..9726d9b378 100644
> --- a/linux-user/strace.c
> +++ b/linux-user/strace.c
> @@ -335,12 +335,15 @@ static void print_siginfo(const target_siginfo_t *tinfo)
> }
>
> static void
> -print_sockaddr(abi_ulong addr, abi_long addrlen)
> +print_sockaddr_ptr(abi_ulong addr, abi_long addrlen, bool addrlen_ptr)
> {
> struct target_sockaddr *sa;
> int i;
> int sa_family;
>
> + if (addrlen_ptr) {
> + get_user_ual(addrlen, addrlen);
> + }
> sa = lock_user(VERIFY_READ, addr, addrlen, 1);
> if (sa) {
> sa_family = tswap16(sa->sa_family);
> @@ -417,7 +420,17 @@ print_sockaddr(abi_ulong addr, abi_long addrlen)
> } else {
> print_raw_param("0x"TARGET_ABI_FMT_lx, addr, 0);
> }
> - gemu_log(", "TARGET_ABI_FMT_ld, addrlen);
> + if (addrlen_ptr) {
> + gemu_log(", ["TARGET_ABI_FMT_ld"]", addrlen);
> + } else {
> + gemu_log(", "TARGET_ABI_FMT_ld, addrlen);
> + }
> +}
> +
> +static void
> +print_sockaddr(abi_ulong addr, abi_long addrlen)
> +{
> + print_sockaddr_ptr(addr, addrlen, false);
> }
>
> static void
>
Why not only something like:
static void
print_sockaddr_ptr(abi_ulong addr, abi_long addrlen_ptr)
{
abi_ulong addrlen;
get_user_ual(addrlen, addrlen_ptr);
print_sockaddr(addr, addrlen);
}
?
You should also check addrlen_ptr != NULL (it's allowed with recvfrom()).
Thanks,
Laurent
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- Re: [Qemu-devel] [PATCH 03/11] linux-user/strace: add print_sockaddr_ptr() to handle plain/pointer addrlen,
Laurent Vivier <=