From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/block/scsi_ioctl.c | 311 +++++++++++++++++++++++++++++++++++++++------------
1 files changed, 234 insertions(+), 77 deletions(-)
diff --git a/kernel/block/scsi_ioctl.c b/kernel/block/scsi_ioctl.c
index 533f4ae..c9f009c 100644
--- a/kernel/block/scsi_ioctl.c
+++ b/kernel/block/scsi_ioctl.c
@@ -1,21 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2001 Jens Axboe <axboe@suse.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public Licens
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-
- *
*/
+#include <linux/compat.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
@@ -33,6 +20,7 @@
#include <scsi/scsi.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsi_cmnd.h>
+#include <scsi/sg.h>
struct blk_cmd_filter {
unsigned long read_ok[BLK_SCSI_CMD_PER_LONG];
@@ -48,8 +36,6 @@
16, 12, 10, 10
};
EXPORT_SYMBOL(scsi_command_size_tbl);
-
-#include <scsi/sg.h>
static int sg_get_version(int __user *p)
{
@@ -205,6 +191,10 @@
__set_bit(GPCMD_LOAD_UNLOAD, filter->write_ok);
__set_bit(GPCMD_SET_STREAMING, filter->write_ok);
__set_bit(GPCMD_SET_READ_AHEAD, filter->write_ok);
+
+ /* ZBC Commands */
+ __set_bit(ZBC_OUT, filter->write_ok);
+ __set_bit(ZBC_IN, filter->read_ok);
}
int blk_verify_command(unsigned char *cmd, fmode_t mode)
@@ -341,9 +331,8 @@
struct iov_iter i;
struct iovec *iov = NULL;
- ret = import_iovec(rq_data_dir(rq),
- hdr->dxferp, hdr->iovec_count,
- 0, &iov, &i);
+ ret = import_iovec(rq_data_dir(rq), hdr->dxferp,
+ hdr->iovec_count, 0, &iov, &i);
if (ret < 0)
goto out_free_cdb;
@@ -556,6 +545,225 @@
return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
}
+int put_sg_io_hdr(const struct sg_io_hdr *hdr, void __user *argp)
+{
+#ifdef CONFIG_COMPAT
+ if (in_compat_syscall()) {
+ struct compat_sg_io_hdr hdr32 = {
+ .interface_id = hdr->interface_id,
+ .dxfer_direction = hdr->dxfer_direction,
+ .cmd_len = hdr->cmd_len,
+ .mx_sb_len = hdr->mx_sb_len,
+ .iovec_count = hdr->iovec_count,
+ .dxfer_len = hdr->dxfer_len,
+ .dxferp = (uintptr_t)hdr->dxferp,
+ .cmdp = (uintptr_t)hdr->cmdp,
+ .sbp = (uintptr_t)hdr->sbp,
+ .timeout = hdr->timeout,
+ .flags = hdr->flags,
+ .pack_id = hdr->pack_id,
+ .usr_ptr = (uintptr_t)hdr->usr_ptr,
+ .status = hdr->status,
+ .masked_status = hdr->masked_status,
+ .msg_status = hdr->msg_status,
+ .sb_len_wr = hdr->sb_len_wr,
+ .host_status = hdr->host_status,
+ .driver_status = hdr->driver_status,
+ .resid = hdr->resid,
+ .duration = hdr->duration,
+ .info = hdr->info,
+ };
+
+ if (copy_to_user(argp, &hdr32, sizeof(hdr32)))
+ return -EFAULT;
+
+ return 0;
+ }
+#endif
+
+ if (copy_to_user(argp, hdr, sizeof(*hdr)))
+ return -EFAULT;
+
+ return 0;
+}
+EXPORT_SYMBOL(put_sg_io_hdr);
+
+int get_sg_io_hdr(struct sg_io_hdr *hdr, const void __user *argp)
+{
+#ifdef CONFIG_COMPAT
+ struct compat_sg_io_hdr hdr32;
+
+ if (in_compat_syscall()) {
+ if (copy_from_user(&hdr32, argp, sizeof(hdr32)))
+ return -EFAULT;
+
+ *hdr = (struct sg_io_hdr) {
+ .interface_id = hdr32.interface_id,
+ .dxfer_direction = hdr32.dxfer_direction,
+ .cmd_len = hdr32.cmd_len,
+ .mx_sb_len = hdr32.mx_sb_len,
+ .iovec_count = hdr32.iovec_count,
+ .dxfer_len = hdr32.dxfer_len,
+ .dxferp = compat_ptr(hdr32.dxferp),
+ .cmdp = compat_ptr(hdr32.cmdp),
+ .sbp = compat_ptr(hdr32.sbp),
+ .timeout = hdr32.timeout,
+ .flags = hdr32.flags,
+ .pack_id = hdr32.pack_id,
+ .usr_ptr = compat_ptr(hdr32.usr_ptr),
+ .status = hdr32.status,
+ .masked_status = hdr32.masked_status,
+ .msg_status = hdr32.msg_status,
+ .sb_len_wr = hdr32.sb_len_wr,
+ .host_status = hdr32.host_status,
+ .driver_status = hdr32.driver_status,
+ .resid = hdr32.resid,
+ .duration = hdr32.duration,
+ .info = hdr32.info,
+ };
+
+ return 0;
+ }
+#endif
+
+ if (copy_from_user(hdr, argp, sizeof(*hdr)))
+ return -EFAULT;
+
+ return 0;
+}
+EXPORT_SYMBOL(get_sg_io_hdr);
+
+#ifdef CONFIG_COMPAT
+struct compat_cdrom_generic_command {
+ unsigned char cmd[CDROM_PACKET_SIZE];
+ compat_caddr_t buffer;
+ compat_uint_t buflen;
+ compat_int_t stat;
+ compat_caddr_t sense;
+ unsigned char data_direction;
+ unsigned char pad[3];
+ compat_int_t quiet;
+ compat_int_t timeout;
+ compat_caddr_t unused;
+};
+#endif
+
+static int scsi_get_cdrom_generic_arg(struct cdrom_generic_command *cgc,
+ const void __user *arg)
+{
+#ifdef CONFIG_COMPAT
+ if (in_compat_syscall()) {
+ struct compat_cdrom_generic_command cgc32;
+
+ if (copy_from_user(&cgc32, arg, sizeof(cgc32)))
+ return -EFAULT;
+
+ *cgc = (struct cdrom_generic_command) {
+ .buffer = compat_ptr(cgc32.buffer),
+ .buflen = cgc32.buflen,
+ .stat = cgc32.stat,
+ .sense = compat_ptr(cgc32.sense),
+ .data_direction = cgc32.data_direction,
+ .quiet = cgc32.quiet,
+ .timeout = cgc32.timeout,
+ .unused = compat_ptr(cgc32.unused),
+ };
+ memcpy(&cgc->cmd, &cgc32.cmd, CDROM_PACKET_SIZE);
+ return 0;
+ }
+#endif
+ if (copy_from_user(cgc, arg, sizeof(*cgc)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int scsi_put_cdrom_generic_arg(const struct cdrom_generic_command *cgc,
+ void __user *arg)
+{
+#ifdef CONFIG_COMPAT
+ if (in_compat_syscall()) {
+ struct compat_cdrom_generic_command cgc32 = {
+ .buffer = (uintptr_t)(cgc->buffer),
+ .buflen = cgc->buflen,
+ .stat = cgc->stat,
+ .sense = (uintptr_t)(cgc->sense),
+ .data_direction = cgc->data_direction,
+ .quiet = cgc->quiet,
+ .timeout = cgc->timeout,
+ .unused = (uintptr_t)(cgc->unused),
+ };
+ memcpy(&cgc32.cmd, &cgc->cmd, CDROM_PACKET_SIZE);
+
+ if (copy_to_user(arg, &cgc32, sizeof(cgc32)))
+ return -EFAULT;
+
+ return 0;
+ }
+#endif
+ if (copy_to_user(arg, cgc, sizeof(*cgc)))
+ return -EFAULT;
+
+ return 0;
+}
+
+static int scsi_cdrom_send_packet(struct request_queue *q,
+ struct gendisk *bd_disk,
+ fmode_t mode, void __user *arg)
+{
+ struct cdrom_generic_command cgc;
+ struct sg_io_hdr hdr;
+ int err;
+
+ err = scsi_get_cdrom_generic_arg(&cgc, arg);
+ if (err)
+ return err;
+
+ cgc.timeout = clock_t_to_jiffies(cgc.timeout);
+ memset(&hdr, 0, sizeof(hdr));
+ hdr.interface_id = 'S';
+ hdr.cmd_len = sizeof(cgc.cmd);
+ hdr.dxfer_len = cgc.buflen;
+ switch (cgc.data_direction) {
+ case CGC_DATA_UNKNOWN:
+ hdr.dxfer_direction = SG_DXFER_UNKNOWN;
+ break;
+ case CGC_DATA_WRITE:
+ hdr.dxfer_direction = SG_DXFER_TO_DEV;
+ break;
+ case CGC_DATA_READ:
+ hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+ break;
+ case CGC_DATA_NONE:
+ hdr.dxfer_direction = SG_DXFER_NONE;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ hdr.dxferp = cgc.buffer;
+ hdr.sbp = cgc.sense;
+ if (hdr.sbp)
+ hdr.mx_sb_len = sizeof(struct request_sense);
+ hdr.timeout = jiffies_to_msecs(cgc.timeout);
+ hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;
+ hdr.cmd_len = sizeof(cgc.cmd);
+
+ err = sg_io(q, bd_disk, &hdr, mode);
+ if (err == -EFAULT)
+ return -EFAULT;
+
+ if (hdr.status)
+ return -EIO;
+
+ cgc.stat = err;
+ cgc.buflen = hdr.resid;
+ if (scsi_put_cdrom_generic_arg(&cgc, arg))
+ return -EFAULT;
+
+ return err;
+}
+
int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mode,
unsigned int cmd, void __user *arg)
{
@@ -595,71 +803,20 @@
case SG_IO: {
struct sg_io_hdr hdr;
- err = -EFAULT;
- if (copy_from_user(&hdr, arg, sizeof(hdr)))
- break;
- err = sg_io(q, bd_disk, &hdr, mode);
- if (err == -EFAULT)
- break;
-
- if (copy_to_user(arg, &hdr, sizeof(hdr)))
- err = -EFAULT;
- break;
- }
- case CDROM_SEND_PACKET: {
- struct cdrom_generic_command cgc;
- struct sg_io_hdr hdr;
-
- err = -EFAULT;
- if (copy_from_user(&cgc, arg, sizeof(cgc)))
- break;
- cgc.timeout = clock_t_to_jiffies(cgc.timeout);
- memset(&hdr, 0, sizeof(hdr));
- hdr.interface_id = 'S';
- hdr.cmd_len = sizeof(cgc.cmd);
- hdr.dxfer_len = cgc.buflen;
- err = 0;
- switch (cgc.data_direction) {
- case CGC_DATA_UNKNOWN:
- hdr.dxfer_direction = SG_DXFER_UNKNOWN;
- break;
- case CGC_DATA_WRITE:
- hdr.dxfer_direction = SG_DXFER_TO_DEV;
- break;
- case CGC_DATA_READ:
- hdr.dxfer_direction = SG_DXFER_FROM_DEV;
- break;
- case CGC_DATA_NONE:
- hdr.dxfer_direction = SG_DXFER_NONE;
- break;
- default:
- err = -EINVAL;
- }
+ err = get_sg_io_hdr(&hdr, arg);
if (err)
break;
-
- hdr.dxferp = cgc.buffer;
- hdr.sbp = cgc.sense;
- if (hdr.sbp)
- hdr.mx_sb_len = sizeof(struct request_sense);
- hdr.timeout = jiffies_to_msecs(cgc.timeout);
- hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;
- hdr.cmd_len = sizeof(cgc.cmd);
-
err = sg_io(q, bd_disk, &hdr, mode);
if (err == -EFAULT)
break;
- if (hdr.status)
- err = -EIO;
-
- cgc.stat = err;
- cgc.buflen = hdr.resid;
- if (copy_to_user(arg, &cgc, sizeof(cgc)))
+ if (put_sg_io_hdr(&hdr, arg))
err = -EFAULT;
-
break;
}
+ case CDROM_SEND_PACKET:
+ err = scsi_cdrom_send_packet(q, bd_disk, mode, arg);
+ break;
/*
* old junk scsi send command ioctl
@@ -688,7 +845,7 @@
int scsi_verify_blk_ioctl(struct block_device *bd, unsigned int cmd)
{
- if (bd && bd == bd->bd_contains)
+ if (bd && !bdev_is_partition(bd))
return 0;
if (capable(CAP_SYS_RAWIO))
--
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