From patchwork Wed Dec 11 20:42:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 11286387 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 21B9F112B for ; Wed, 11 Dec 2019 20:51:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F418A21556 for ; Wed, 11 Dec 2019 20:51:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726718AbfLKUvu (ORCPT ); Wed, 11 Dec 2019 15:51:50 -0500 Received: from mout.kundenserver.de ([212.227.17.24]:45853 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726494AbfLKUvt (ORCPT ); Wed, 11 Dec 2019 15:51:49 -0500 Received: from threadripper.lan ([149.172.19.189]) by mrelayeu.kundenserver.de (mreue108 [212.227.15.145]) with ESMTPA (Nemesis) id 1N4R0a-1hhIFG2CJi-011RMZ; Wed, 11 Dec 2019 21:51:32 +0100 From: Arnd Bergmann To: Jens Axboe , "James E.J. Bottomley" , "Martin K. Petersen" , Alexander Viro , John Garry , Brian King , Intel SCU Linux support , Artur Paszkiewicz , Jack Wang Cc: linux-kernel@vger.kernel.org, y2038@lists.linaro.org, Arnd Bergmann , Hannes Reinecke , linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org Subject: [PATCH 19/24] compat_ioctl: scsi: handle HDIO commands from drivers Date: Wed, 11 Dec 2019 21:42:53 +0100 Message-Id: <20191211204306.1207817-20-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20191211204306.1207817-1-arnd@arndb.de> References: <20191211204306.1207817-1-arnd@arndb.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:VLpQgUZjxMkjb5YR1h3oCFegmEv0coXfNiTrkHDQbxAgyNP2E6r MhXP2DgggU3oHmH6OM02Nk4EdkpfukoiVoudcNxW0gfqQQUukVExLJ7qPeUaC3clym7QDC0 nxat+UUyfjMPDoRwh/vX8d4K73OhBvOqGwqCeFzy/lYeu2qwmuA9trb2+GROu1JTOt3YvxB MLF8IJwkJNZW0Nm7LIFpw== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:Px569MvALqc=:ysQLWqqciSyF15brchKM3I AbgC7DJI/etNcD+NoccD2d9MqjmlCKi5QZwvOSVw3d5aEnupRdMueWRTKTtD0L/Gr8TRj3Y72 iSBCbkqGkDo9MTm1JFmOcpGjOGvXfaysP0YDObPqS7ydxwRCxsfpE7hTcmwswcvBl5iQfrjhu eKLPypYh9ZvSyzYcB3mZkDpPngBv6/lCuW9PX9VMtpb5aoj0T4k9M1lqHBVTdiOUMc5CvcAjR mcUHXeEJvTsU03QjrFBk+VT3A0Hlsaw9UvkIYfK74sBafee67riQ0pcmXlw+HYzF4gDuoDtZI Jt6AhxBwKxun6NVYFVjTkJlsIDsEm6bBQU8ZH1267i8g7SgZucFxe7Ix8cfgdh9JZS0m0Gxdc mQsnRZPAxsSS64lpve3Is6NbsTN9AiORby8p0ywPyvZWYFS0DJoV2gbbx9Fv7lkUa3DiKNung X9ASeZFO3SP2nNFfwTpE4M5dy04rABfp+TP7ymdgx6Npw3jvzEYMJRbaFqdcgI4SfO6BrgbZR uF7gIhgrSKYmunLQ7S3JU+NbclFRBThXEPe81WzG3q/o6LR6RchCoSiQtqCgpDHQvK6R+W72D 8htJh+GZOeT7VW3gyPgN6Pns/RBZuCRJvFsbVBKI5oNXNZyt5+nmlGk6CG4lTm5jCzCrG8b5n T9iHACHK0zsazU8SackkzxZkdJXhU5jrxwL2CQqeMlcIit9bWKIYIfcBjcnGEhjBKaosW7PFS PvI7Vp1Bm6nCKKDOQMMg3wWYXZcu1ljfBPF+W+1becYC/U0WLm6L91VeAQv6GFQ6I+HopLzkJ TTnWy3eGhD4EZBkg/3QdrcNxVcufdDAKajSMPDmwzy6Vo8bVL8QzKfKQFu/AhtH0qHPyJE7vZ KDXp5oroB2gZemEXwXBQ== Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org The ata_sas_scsi_ioctl() function implements a number of HDIO_* commands for SCSI devices, it is used by all libata drivers as well as a few drivers that support SAS attached SATA drives. The only command that is not safe for compat ioctls here is HDIO_GET_32BIT. Change the implementation to check for in_compat_syscall() in order to do both cases correctly, and change all callers to use it as both native and compat callback pointers, including the indirect callers through sas_ioctl and ata_scsi_ioctl. Signed-off-by: Arnd Bergmann --- drivers/ata/libata-scsi.c | 9 +++++++++ drivers/scsi/aic94xx/aic94xx_init.c | 3 +++ drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 3 +++ drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 3 +++ drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 3 +++ drivers/scsi/ipr.c | 3 +++ drivers/scsi/isci/init.c | 3 +++ drivers/scsi/mvsas/mv_init.c | 3 +++ drivers/scsi/pm8001/pm8001_init.c | 3 +++ include/linux/libata.h | 6 ++++++ 10 files changed, 39 insertions(+) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 58e09ffe8b9c..eb2eb599e602 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -17,6 +17,7 @@ * - http://www.t13.org/ */ +#include #include #include #include @@ -761,6 +762,10 @@ static int ata_ioc32(struct ata_port *ap) return 0; } +/* + * This handles both native and compat commands, so anything added + * here must have a compatible argument, or check in_compat_syscall() + */ int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, unsigned int cmd, void __user *arg) { @@ -773,6 +778,10 @@ int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, spin_lock_irqsave(ap->lock, flags); val = ata_ioc32(ap); spin_unlock_irqrestore(ap->lock, flags); +#ifdef CONFIG_COMPAT + if (in_compat_syscall()) + return put_user(val, (compat_ulong_t __user *)arg); +#endif return put_user(val, (unsigned long __user *)arg); case HDIO_SET_32BIT: diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c index f5781e31f57c..d022407e5645 100644 --- a/drivers/scsi/aic94xx/aic94xx_init.c +++ b/drivers/scsi/aic94xx/aic94xx_init.c @@ -54,6 +54,9 @@ static struct scsi_host_template aic94xx_sht = { .eh_target_reset_handler = sas_eh_target_reset_handler, .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = sas_ioctl, +#endif .track_queue_depth = 1, }; diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c index 3af53cc42bd6..fa25766502a2 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c @@ -1772,6 +1772,9 @@ static struct scsi_host_template sht_v1_hw = { .eh_target_reset_handler = sas_eh_target_reset_handler, .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = sas_ioctl, +#endif .shost_attrs = host_attrs_v1_hw, .host_reset = hisi_sas_host_reset, }; diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c index 61b1e2693b08..545eaff5f3ee 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c @@ -3551,6 +3551,9 @@ static struct scsi_host_template sht_v2_hw = { .eh_target_reset_handler = sas_eh_target_reset_handler, .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = sas_ioctl, +#endif .shost_attrs = host_attrs_v2_hw, .host_reset = hisi_sas_host_reset, }; diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index bf5d5f138437..fa05e612d85a 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -3075,6 +3075,9 @@ static struct scsi_host_template sht_v3_hw = { .eh_target_reset_handler = sas_eh_target_reset_handler, .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = sas_ioctl, +#endif .shost_attrs = host_attrs_v3_hw, .tag_alloc_policy = BLK_TAG_ALLOC_RR, .host_reset = hisi_sas_host_reset, diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 079c04bc448a..ae45cbe98ae2 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -6727,6 +6727,9 @@ static struct scsi_host_template driver_template = { .name = "IPR", .info = ipr_ioa_info, .ioctl = ipr_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = ipr_ioctl, +#endif .queuecommand = ipr_queuecommand, .eh_abort_handler = ipr_eh_abort, .eh_device_reset_handler = ipr_eh_dev_reset, diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 1727d0c71b12..b48aac8dfcb8 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -168,6 +168,9 @@ static struct scsi_host_template isci_sht = { .eh_target_reset_handler = sas_eh_target_reset_handler, .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = sas_ioctl, +#endif .shost_attrs = isci_host_attrs, .track_queue_depth = 1, }; diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c index da719b0694dc..7af9173c4925 100644 --- a/drivers/scsi/mvsas/mv_init.c +++ b/drivers/scsi/mvsas/mv_init.c @@ -47,6 +47,9 @@ static struct scsi_host_template mvs_sht = { .eh_target_reset_handler = sas_eh_target_reset_handler, .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = sas_ioctl, +#endif .shost_attrs = mvst_host_attrs, .track_queue_depth = 1, }; diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index ff618ad80ebd..3c6076e4c6d2 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -101,6 +101,9 @@ static struct scsi_host_template pm8001_sht = { .eh_target_reset_handler = sas_eh_target_reset_handler, .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = sas_ioctl, +#endif .shost_attrs = pm8001_host_attrs, .track_queue_depth = 1, }; diff --git a/include/linux/libata.h b/include/linux/libata.h index d3bbfddf616a..e68d05febe5a 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1109,6 +1109,11 @@ extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_op extern int ata_scsi_detect(struct scsi_host_template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd, void __user *arg); +#ifdef CONFIG_COMPAT +#define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl, +#else +#define ATA_SCSI_COMPAT_IOCTL /* empty */ +#endif extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd); extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, unsigned int cmd, void __user *arg); @@ -1340,6 +1345,7 @@ extern struct device_attribute *ata_common_sdev_attrs[]; .module = THIS_MODULE, \ .name = drv_name, \ .ioctl = ata_scsi_ioctl, \ + ATA_SCSI_COMPAT_IOCTL \ .queuecommand = ata_scsi_queuecmd, \ .can_queue = ATA_DEF_QUEUE, \ .tag_alloc_policy = BLK_TAG_ALLOC_RR, \