From: Al Viro <viro@zeniv.linux.org.uk>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linux-fsdevel@vger.kernel.org, y2038@lists.linaro.org,
linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
"David S. Miller" <davem@davemloft.net>,
linux-ppp@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH v3 04/26] compat_ioctl: move PPPIOCSCOMPRESS32 to ppp-generic.c
Date: Wed, 17 Apr 2019 22:16:38 +0100 [thread overview]
Message-ID: <20190417211637.GV2217@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20190416202013.4034148-5-arnd@arndb.de>
On Tue, Apr 16, 2019 at 10:19:42PM +0200, Arnd Bergmann wrote:
> +#ifdef CONFIG_COMPAT
> +struct ppp_option_data32 {
> + compat_caddr_t ptr;
Huh? compat_uptr_t, surely? I realize that compat_ioctl.c is bogus
that way right now, but let's not spread that crap into the places
where it's harder to find...
> err = -EFAULT;
> - if (copy_from_user(&data, (void __user *) arg, sizeof(data)))
> - goto out;
> +#ifdef CONFIG_COMPAT
> + if (compat) {
> + struct ppp_option_data32 data32;
> +
> + if (copy_from_user(&data32, (void __user *) arg,
> + sizeof(data32)))
> + goto out;
> +
> + data.ptr = compat_ptr(data32.ptr);
> + data.length = data32.length;
> + data.transmit = data32.transmit;
> + } else
> +#endif
> + {
> + if (copy_from_user(&data, (void __user *) arg, sizeof(data)))
> + goto out;
> + }
*UGH*
Do that in caller, please. And sod the flag argument...
next prev parent reply other threads:[~2019-04-17 21:16 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 20:19 [PATCH v3 00/26] compat_ioctl: cleanups Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 01/26] compat_ioctl: pppoe: fix PPPOEIOCSFWD handling Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 02/26] compat_ioctl: move simple ppp command handling into driver Arnd Bergmann
2019-04-17 21:13 ` Al Viro
2019-04-17 22:03 ` Arnd Bergmann
2019-04-17 23:53 ` Al Viro
2019-04-18 5:57 ` Al Viro
2019-04-18 15:14 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 03/26] compat_ioctl: avoid unused function warning for do_ioctl Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 04/26] compat_ioctl: move PPPIOCSCOMPRESS32 to ppp-generic.c Arnd Bergmann
2019-04-17 21:16 ` Al Viro [this message]
2019-04-17 21:44 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 05/26] compat_ioctl: move PPPIOCSPASS32/PPPIOCSACTIVE32 to ppp_generic.c Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 06/26] compat_ioctl: handle PPPIOCGIDLE for 64-bit time_t Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 07/26] compat_ioctl: move rtc handling into rtc-dev.c Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 08/26] compat_ioctl: add compat_ptr_ioctl() Arnd Bergmann
2019-04-17 21:19 ` Al Viro
2019-04-17 21:34 ` Arnd Bergmann
2019-04-16 20:19 ` [PATCH v3 09/26] compat_ioctl: move drivers to compat_ptr_ioctl Arnd Bergmann
2019-04-16 20:31 ` Jiri Kosina
2019-04-18 11:10 ` Stefan Hajnoczi
2019-04-19 23:16 ` Michael S. Tsirkin
2019-04-16 20:19 ` [PATCH v3 10/26] compat_ioctl: use correct compat_ptr() translation in drivers Arnd Bergmann
2019-04-17 21:21 ` Al Viro
2019-04-16 20:19 ` [PATCH v3 11/26] ceph: fix compat_ioctl for ceph_dir_operations Arnd Bergmann
2019-04-17 21:23 ` Al Viro
2019-04-17 21:31 ` Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 12/26] compat_ioctl: move more drivers to compat_ptr_ioctl Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 13/26] compat_ioctl: move tape handling into drivers Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 14/26] compat_ioctl: move ATYFB_CLK handling to atyfb driver Arnd Bergmann
2019-04-17 21:27 ` Al Viro
2019-04-17 21:28 ` Al Viro
2019-05-06 13:37 ` Bartlomiej Zolnierkiewicz
2019-04-16 20:25 ` [PATCH v3 15/26] compat_ioctl: move isdn/capi ioctl translation into driver Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 16/26] compat_ioctl: move rfcomm handlers " Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 17/26] compat_ioctl: move hci_sock " Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 18/26] compat_ioctl: remove HCIUART handling Arnd Bergmann
2019-04-16 20:25 ` [PATCH v3 19/26] compat_ioctl: remove HIDIO translation Arnd Bergmann
2019-04-25 15:21 ` [PATCH v3 12/26] compat_ioctl: move more drivers to compat_ptr_ioctl Mauro Carvalho Chehab
2019-04-25 15:32 ` Arnd Bergmann
2019-04-25 15:35 ` Al Viro
2019-04-25 15:53 ` Mauro Carvalho Chehab
2019-04-25 15:55 ` Arnd Bergmann
2019-04-25 16:42 ` Al Viro
2019-04-25 21:25 ` Johannes Berg
2019-04-26 7:46 ` Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 20/26] compat_ioctl: remove translation for sound ioctls Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 21/26] compat_ioctl: remove IGNORE_IOCTL() Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 22/26] compat_ioctl: remove /dev/random commands Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 23/26] compat_ioctl: remove joystick ioctl translation Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 24/26] compat_ioctl: remove PCI " Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 25/26] compat_ioctl: remove /dev/raw " Arnd Bergmann
2019-04-16 20:28 ` [PATCH v3 26/26] compat_ioctl: remove last RAID handling code Arnd Bergmann
2019-04-17 8:05 ` [PATCH v3 20/26] compat_ioctl: remove translation for sound ioctls Takashi Iwai
2019-04-29 7:05 ` Takashi Iwai
2019-04-29 12:43 ` Arnd Bergmann
2019-04-16 22:33 ` [PATCH v3 00/26] compat_ioctl: cleanups Douglas Gilbert
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