linux-kernel - Re: [PATCH 3/5] Add preadv and pwritev system calls.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 16 Jan 2009 18:34:01 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Gerd Hoffmann <kraxel@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-api@...r.kernel.org, aarcange@...hat.com
Subject: Re: [PATCH 3/5] Add preadv and pwritev system calls.

On Friday 16 January 2009, Gerd Hoffmann wrote:
> +asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
> +               const struct compat_iovec __user *vec,
> +               unsigned long vlen, u32 pos_high, u32 pos_low);
> +asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
> +               const struct compat_iovec __user *vec,
> +               unsigned long vlen, u32 pos_high, u32 pos_low);
>  
>  int compat_do_execve(char * filename, compat_uptr_t __user *argv,
>                 compat_uptr_t __user *envp, struct pt_regs * regs);
> diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
> index 16875f8..333377e 100644
> --- a/include/linux/syscalls.h
> +++ b/include/linux/syscalls.h
> @@ -456,6 +456,10 @@ asmlinkage long sys_pread64(unsigned int fd, char __user *buf,
>                             size_t count, loff_t pos);
>  asmlinkage long sys_pwrite64(unsigned int fd, const char __user *buf,
>                              size_t count, loff_t pos);
> +asmlinkage long sys_preadv(unsigned long fd, const struct iovec __user *vec,
> +                           unsigned long vlen, u32 pos_high, u32 pos_low);
> +asmlinkage long sys_pwritev(unsigned long fd, const struct iovec __user *vec,
> +                            unsigned long vlen, u32 pos_high, u32 pos_low);

Conventionally, the 'fd' argument has type 'int', not 'unsigned long', but you
evidently copied this from readv/writev, so you can't really be blamed for it.
Not sure what the right thing to do here is.

	Arnd <><
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/