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-rw-r--r--drivers/block/DAC960.c157
-rw-r--r--drivers/block/aoe/aoechr.c7
-rw-r--r--drivers/block/aoe/aoecmd.c2
-rw-r--r--drivers/block/paride/pg.c22
-rw-r--r--drivers/block/paride/pt.c27
-rw-r--r--drivers/block/pktcdvd.c46
-rw-r--r--drivers/block/xen-blkfront.c48
7 files changed, 215 insertions, 94 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index cd03473f354..a002a381df9 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -6628,15 +6628,18 @@ static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller)
* DAC960_gam_ioctl is the ioctl function for performing RAID operations.
*/
-static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
- unsigned int Request, unsigned long Argument)
+static long DAC960_gam_ioctl(struct file *file, unsigned int Request,
+ unsigned long Argument)
{
- int ErrorCode = 0;
+ long ErrorCode = 0;
if (!capable(CAP_SYS_ADMIN)) return -EACCES;
+
+ lock_kernel();
switch (Request)
{
case DAC960_IOCTL_GET_CONTROLLER_COUNT:
- return DAC960_ControllerCount;
+ ErrorCode = DAC960_ControllerCount;
+ break;
case DAC960_IOCTL_GET_CONTROLLER_INFO:
{
DAC960_ControllerInfo_T __user *UserSpaceControllerInfo =
@@ -6644,15 +6647,20 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
DAC960_ControllerInfo_T ControllerInfo;
DAC960_Controller_T *Controller;
int ControllerNumber;
- if (UserSpaceControllerInfo == NULL) return -EINVAL;
- ErrorCode = get_user(ControllerNumber,
+ if (UserSpaceControllerInfo == NULL)
+ ErrorCode = -EINVAL;
+ else ErrorCode = get_user(ControllerNumber,
&UserSpaceControllerInfo->ControllerNumber);
- if (ErrorCode != 0) return ErrorCode;
+ if (ErrorCode != 0)
+ break;;
+ ErrorCode = -ENXIO;
if (ControllerNumber < 0 ||
- ControllerNumber > DAC960_ControllerCount - 1)
- return -ENXIO;
+ ControllerNumber > DAC960_ControllerCount - 1) {
+ break;
+ }
Controller = DAC960_Controllers[ControllerNumber];
- if (Controller == NULL) return -ENXIO;
+ if (Controller == NULL)
+ break;;
memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T));
ControllerInfo.ControllerNumber = ControllerNumber;
ControllerInfo.FirmwareType = Controller->FirmwareType;
@@ -6665,8 +6673,9 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
ControllerInfo.PCI_Address = Controller->PCI_Address;
strcpy(ControllerInfo.ModelName, Controller->ModelName);
strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion);
- return (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
+ ErrorCode = (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0);
+ break;
}
case DAC960_IOCTL_V1_EXECUTE_COMMAND:
{
@@ -6684,30 +6693,39 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
int ControllerNumber, DataTransferLength;
unsigned char *DataTransferBuffer = NULL;
dma_addr_t DataTransferBufferDMA;
- if (UserSpaceUserCommand == NULL) return -EINVAL;
+ if (UserSpaceUserCommand == NULL) {
+ ErrorCode = -EINVAL;
+ break;
+ }
if (copy_from_user(&UserCommand, UserSpaceUserCommand,
sizeof(DAC960_V1_UserCommand_T))) {
ErrorCode = -EFAULT;
- goto Failure1a;
+ break;
}
ControllerNumber = UserCommand.ControllerNumber;
+ ErrorCode = -ENXIO;
if (ControllerNumber < 0 ||
ControllerNumber > DAC960_ControllerCount - 1)
- return -ENXIO;
+ break;
Controller = DAC960_Controllers[ControllerNumber];
- if (Controller == NULL) return -ENXIO;
- if (Controller->FirmwareType != DAC960_V1_Controller) return -EINVAL;
+ if (Controller == NULL)
+ break;
+ ErrorCode = -EINVAL;
+ if (Controller->FirmwareType != DAC960_V1_Controller)
+ break;
CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode;
DataTransferLength = UserCommand.DataTransferLength;
- if (CommandOpcode & 0x80) return -EINVAL;
+ if (CommandOpcode & 0x80)
+ break;
if (CommandOpcode == DAC960_V1_DCDB)
{
if (copy_from_user(&DCDB, UserCommand.DCDB,
sizeof(DAC960_V1_DCDB_T))) {
ErrorCode = -EFAULT;
- goto Failure1a;
+ break;
}
- if (DCDB.Channel >= DAC960_V1_MaxChannels) return -EINVAL;
+ if (DCDB.Channel >= DAC960_V1_MaxChannels)
+ break;
if (!((DataTransferLength == 0 &&
DCDB.Direction
== DAC960_V1_DCDB_NoDataTransfer) ||
@@ -6717,38 +6735,37 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
(DataTransferLength < 0 &&
DCDB.Direction
== DAC960_V1_DCDB_DataTransferSystemToDevice)))
- return -EINVAL;
+ break;
if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength)
!= abs(DataTransferLength))
- return -EINVAL;
+ break;
DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice,
sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA);
- if (DCDB_IOBUF == NULL)
- return -ENOMEM;
+ if (DCDB_IOBUF == NULL) {
+ ErrorCode = -ENOMEM;
+ break;
+ }
}
+ ErrorCode = -ENOMEM;
if (DataTransferLength > 0)
{
DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
DataTransferLength, &DataTransferBufferDMA);
- if (DataTransferBuffer == NULL) {
- ErrorCode = -ENOMEM;
- goto Failure1;
- }
+ if (DataTransferBuffer == NULL)
+ break;
memset(DataTransferBuffer, 0, DataTransferLength);
}
else if (DataTransferLength < 0)
{
DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
-DataTransferLength, &DataTransferBufferDMA);
- if (DataTransferBuffer == NULL) {
- ErrorCode = -ENOMEM;
- goto Failure1;
- }
+ if (DataTransferBuffer == NULL)
+ break;
if (copy_from_user(DataTransferBuffer,
UserCommand.DataTransferBuffer,
-DataTransferLength)) {
ErrorCode = -EFAULT;
- goto Failure1;
+ break;
}
}
if (CommandOpcode == DAC960_V1_DCDB)
@@ -6825,8 +6842,7 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
if (DCDB_IOBUF != NULL)
pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T),
DCDB_IOBUF, DCDB_IOBUFDMA);
- Failure1a:
- return ErrorCode;
+ break;
}
case DAC960_IOCTL_V2_EXECUTE_COMMAND:
{
@@ -6844,32 +6860,43 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
dma_addr_t DataTransferBufferDMA;
unsigned char *RequestSenseBuffer = NULL;
dma_addr_t RequestSenseBufferDMA;
- if (UserSpaceUserCommand == NULL) return -EINVAL;
+
+ ErrorCode = -EINVAL;
+ if (UserSpaceUserCommand == NULL)
+ break;
if (copy_from_user(&UserCommand, UserSpaceUserCommand,
sizeof(DAC960_V2_UserCommand_T))) {
ErrorCode = -EFAULT;
- goto Failure2a;
+ break;
}
+ ErrorCode = -ENXIO;
ControllerNumber = UserCommand.ControllerNumber;
if (ControllerNumber < 0 ||
ControllerNumber > DAC960_ControllerCount - 1)
- return -ENXIO;
+ break;
Controller = DAC960_Controllers[ControllerNumber];
- if (Controller == NULL) return -ENXIO;
- if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
+ if (Controller == NULL)
+ break;
+ if (Controller->FirmwareType != DAC960_V2_Controller){
+ ErrorCode = -EINVAL;
+ break;
+ }
DataTransferLength = UserCommand.DataTransferLength;
+ ErrorCode = -ENOMEM;
if (DataTransferLength > 0)
{
DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
DataTransferLength, &DataTransferBufferDMA);
- if (DataTransferBuffer == NULL) return -ENOMEM;
+ if (DataTransferBuffer == NULL)
+ break;
memset(DataTransferBuffer, 0, DataTransferLength);
}
else if (DataTransferLength < 0)
{
DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
-DataTransferLength, &DataTransferBufferDMA);
- if (DataTransferBuffer == NULL) return -ENOMEM;
+ if (DataTransferBuffer == NULL)
+ break;
if (copy_from_user(DataTransferBuffer,
UserCommand.DataTransferBuffer,
-DataTransferLength)) {
@@ -6979,8 +7006,7 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
if (RequestSenseBuffer != NULL)
pci_free_consistent(Controller->PCIDevice, RequestSenseLength,
RequestSenseBuffer, RequestSenseBufferDMA);
- Failure2a:
- return ErrorCode;
+ break;
}
case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
{
@@ -6990,21 +7016,33 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer;
DAC960_Controller_T *Controller;
int ControllerNumber;
- if (UserSpaceGetHealthStatus == NULL) return -EINVAL;
+ if (UserSpaceGetHealthStatus == NULL) {
+ ErrorCode = -EINVAL;
+ break;
+ }
if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus,
- sizeof(DAC960_V2_GetHealthStatus_T)))
- return -EFAULT;
+ sizeof(DAC960_V2_GetHealthStatus_T))) {
+ ErrorCode = -EFAULT;
+ break;
+ }
+ ErrorCode = -ENXIO;
ControllerNumber = GetHealthStatus.ControllerNumber;
if (ControllerNumber < 0 ||
ControllerNumber > DAC960_ControllerCount - 1)
- return -ENXIO;
+ break;
Controller = DAC960_Controllers[ControllerNumber];
- if (Controller == NULL) return -ENXIO;
- if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
+ if (Controller == NULL)
+ break;
+ if (Controller->FirmwareType != DAC960_V2_Controller) {
+ ErrorCode = -EINVAL;
+ break;
+ }
if (copy_from_user(&HealthStatusBuffer,
GetHealthStatus.HealthStatusBuffer,
- sizeof(DAC960_V2_HealthStatusBuffer_T)))
- return -EFAULT;
+ sizeof(DAC960_V2_HealthStatusBuffer_T))) {
+ ErrorCode = -EFAULT;
+ break;
+ }
while (Controller->V2.HealthStatusBuffer->StatusChangeCounter
== HealthStatusBuffer.StatusChangeCounter &&
Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
@@ -7012,21 +7050,28 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
{
interruptible_sleep_on_timeout(&Controller->HealthStatusWaitQueue,
DAC960_MonitoringTimerInterval);
- if (signal_pending(current)) return -EINTR;
+ if (signal_pending(current)) {
+ ErrorCode = -EINTR;
+ break;
+ }
}
if (copy_to_user(GetHealthStatus.HealthStatusBuffer,
Controller->V2.HealthStatusBuffer,
sizeof(DAC960_V2_HealthStatusBuffer_T)))
- return -EFAULT;
- return 0;
+ ErrorCode = -EFAULT;
+ else
+ ErrorCode = 0;
}
+ default:
+ ErrorCode = -ENOTTY;
}
- return -EINVAL;
+ unlock_kernel();
+ return ErrorCode;
}
static const struct file_operations DAC960_gam_fops = {
.owner = THIS_MODULE,
- .ioctl = DAC960_gam_ioctl
+ .unlocked_ioctl = DAC960_gam_ioctl
};
static struct miscdevice DAC960_gam_dev = {
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c
index e8e60e7a2e7..d1de68a3192 100644
--- a/drivers/block/aoe/aoechr.c
+++ b/drivers/block/aoe/aoechr.c
@@ -7,6 +7,7 @@
#include <linux/hdreg.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
+#include <linux/smp_lock.h>
#include "aoe.h"
enum {
@@ -174,12 +175,16 @@ aoechr_open(struct inode *inode, struct file *filp)
{
int n, i;
+ lock_kernel();
n = iminor(inode);
filp->private_data = (void *) (unsigned long) n;
for (i = 0; i < ARRAY_SIZE(chardevs); ++i)
- if (chardevs[i].minor == n)
+ if (chardevs[i].minor == n) {
+ unlock_kernel();
return 0;
+ }
+ unlock_kernel();
return -EINVAL;
}
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index 41f818be2f7..2f1746295d0 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -1003,7 +1003,7 @@ aoecmd_cfg_rsp(struct sk_buff *skb)
* Enough people have their dip switches set backwards to
* warrant a loud message for this special case.
*/
- aoemajor = be16_to_cpu(get_unaligned(&h->major));
+ aoemajor = get_unaligned_be16(&h->major);
if (aoemajor == 0xfff) {
printk(KERN_ERR "aoe: Warning: shelf address is all ones. "
"Check shelf dip switches.\n");
diff --git a/drivers/block/paride/pg.c b/drivers/block/paride/pg.c
index ab86e23ddc6..9d92636350e 100644
--- a/drivers/block/paride/pg.c
+++ b/drivers/block/paride/pg.c
@@ -162,6 +162,7 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_DLY};
#include <linux/pg.h>
#include <linux/device.h>
#include <linux/sched.h> /* current, TASK_* */
+#include <linux/smp_lock.h>
#include <linux/jiffies.h>
#include <asm/uaccess.h>
@@ -515,12 +516,18 @@ static int pg_open(struct inode *inode, struct file *file)
{
int unit = iminor(inode) & 0x7f;
struct pg *dev = &devices[unit];
+ int ret = 0;
- if ((unit >= PG_UNITS) || (!dev->present))
- return -ENODEV;
+ lock_kernel();
+ if ((unit >= PG_UNITS) || (!dev->present)) {
+ ret = -ENODEV;
+ goto out;
+ }
- if (test_and_set_bit(0, &dev->access))
- return -EBUSY;
+ if (test_and_set_bit(0, &dev->access)) {
+ ret = -EBUSY;
+ goto out;
+ }
if (dev->busy) {
pg_reset(dev);
@@ -533,12 +540,15 @@ static int pg_open(struct inode *inode, struct file *file)
if (dev->bufptr == NULL) {
clear_bit(0, &dev->access);
printk("%s: buffer allocation failed\n", dev->name);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto out;
}
file->private_data = dev;
- return 0;
+out:
+ unlock_kernel();
+ return ret;
}
static int pg_release(struct inode *inode, struct file *file)
diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c
index 8b9549ab4a4..5c74c3574a5 100644
--- a/drivers/block/paride/pt.c
+++ b/drivers/block/paride/pt.c
@@ -146,6 +146,7 @@ static int (*drives[4])[6] = {&drive0, &drive1, &drive2, &drive3};
#include <linux/mtio.h>
#include <linux/device.h>
#include <linux/sched.h> /* current, TASK_*, schedule_timeout() */
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
@@ -189,8 +190,7 @@ module_param_array(drive3, int, NULL, 0);
#define ATAPI_LOG_SENSE 0x4d
static int pt_open(struct inode *inode, struct file *file);
-static int pt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg);
+static long pt_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
static int pt_release(struct inode *inode, struct file *file);
static ssize_t pt_read(struct file *filp, char __user *buf,
size_t count, loff_t * ppos);
@@ -236,7 +236,7 @@ static const struct file_operations pt_fops = {
.owner = THIS_MODULE,
.read = pt_read,
.write = pt_write,
- .ioctl = pt_ioctl,
+ .unlocked_ioctl = pt_ioctl,
.open = pt_open,
.release = pt_release,
};
@@ -650,8 +650,11 @@ static int pt_open(struct inode *inode, struct file *file)
struct pt_unit *tape = pt + unit;
int err;
- if (unit >= PT_UNITS || (!tape->present))
+ lock_kernel();
+ if (unit >= PT_UNITS || (!tape->present)) {
+ unlock_kernel();
return -ENODEV;
+ }
err = -EBUSY;
if (!atomic_dec_and_test(&tape->available))
@@ -678,15 +681,16 @@ static int pt_open(struct inode *inode, struct file *file)
}
file->private_data = tape;
+ unlock_kernel();
return 0;
out:
atomic_inc(&tape->available);
+ unlock_kernel();
return err;
}
-static int pt_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+static long pt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct pt_unit *tape = file->private_data;
struct mtop __user *p = (void __user *)arg;
@@ -700,23 +704,26 @@ static int pt_ioctl(struct inode *inode, struct file *file,
switch (mtop.mt_op) {
case MTREW:
+ lock_kernel();
pt_rewind(tape);
+ unlock_kernel();
return 0;
case MTWEOF:
+ lock_kernel();
pt_write_fm(tape);
+ unlock_kernel();
return 0;
default:
- printk("%s: Unimplemented mt_op %d\n", tape->name,
+ /* FIXME: rate limit ?? */
+ printk(KERN_DEBUG "%s: Unimplemented mt_op %d\n", tape->name,
mtop.mt_op);
return -EINVAL;
}
default:
- printk("%s: Unimplemented ioctl 0x%x\n", tape->name, cmd);
- return -EINVAL;
-
+ return -ENOTTY;
}
}
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 3ba1df93e9e..45bee918c46 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -49,6 +49,7 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/kthread.h>
+#include <linux/smp_lock.h>
#include <linux/errno.h>
#include <linux/spinlock.h>
#include <linux/file.h>
@@ -2079,7 +2080,6 @@ static noinline_for_stack int pkt_write_caching(struct pktcdvd_device *pd,
unsigned char buf[64];
int ret;
- memset(buf, 0, sizeof(buf));
init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_READ);
cgc.sense = &sense;
cgc.buflen = pd->mode_offset + 12;
@@ -2126,7 +2126,6 @@ static noinline_for_stack int pkt_get_max_speed(struct pktcdvd_device *pd,
unsigned char *cap_buf;
int ret, offset;
- memset(buf, 0, sizeof(buf));
cap_buf = &buf[sizeof(struct mode_page_header) + pd->mode_offset];
init_cdrom_command(&cgc, buf, sizeof(buf), CGC_DATA_UNKNOWN);
cgc.sense = &sense;
@@ -2633,11 +2632,12 @@ end_io:
-static int pkt_merge_bvec(struct request_queue *q, struct bio *bio, struct bio_vec *bvec)
+static int pkt_merge_bvec(struct request_queue *q, struct bvec_merge_data *bmd,
+ struct bio_vec *bvec)
{
struct pktcdvd_device *pd = q->queuedata;
- sector_t zone = ZONE(bio->bi_sector, pd);
- int used = ((bio->bi_sector - zone) << 9) + bio->bi_size;
+ sector_t zone = ZONE(bmd->bi_sector, pd);
+ int used = ((bmd->bi_sector - zone) << 9) + bmd->bi_size;
int remaining = (pd->settings.size << 9) - used;
int remaining2;
@@ -2645,7 +2645,7 @@ static int pkt_merge_bvec(struct request_queue *q, struct bio *bio, struct bio_v
* A bio <= PAGE_SIZE must be allowed. If it crosses a packet
* boundary, pkt_make_request() will split the bio.
*/
- remaining2 = PAGE_SIZE - bio->bi_size;
+ remaining2 = PAGE_SIZE - bmd->bi_size;
remaining = max(remaining, remaining2);
BUG_ON(remaining < 0);
@@ -2796,9 +2796,14 @@ out_mem:
return ret;
}
-static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long pkt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
- struct pktcdvd_device *pd = inode->i_bdev->bd_disk->private_data;
+ struct inode *inode = file->f_path.dentry->d_inode;
+ struct pktcdvd_device *pd;
+ long ret;
+
+ lock_kernel();
+ pd = inode->i_bdev->bd_disk->private_data;
VPRINTK("pkt_ioctl: cmd %x, dev %d:%d\n", cmd, imajor(inode), iminor(inode));
@@ -2811,7 +2816,8 @@ static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u
case CDROM_LAST_WRITTEN:
case CDROM_SEND_PACKET:
case SCSI_IOCTL_SEND_COMMAND:
- return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
+ ret = blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
+ break;
case CDROMEJECT:
/*
@@ -2820,14 +2826,15 @@ static int pkt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, u
*/
if (pd->refcnt == 1)
pkt_lock_door(pd, 0);
- return blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
+ ret = blkdev_ioctl(pd->bdev->bd_inode, file, cmd, arg);
+ break;
default:
VPRINTK(DRIVER_NAME": Unknown ioctl for %s (%x)\n", pd->name, cmd);
- return -ENOTTY;
+ ret = -ENOTTY;
}
-
- return 0;
+ unlock_kernel();
+ return ret;
}
static int pkt_media_changed(struct gendisk *disk)
@@ -2849,7 +2856,7 @@ static struct block_device_operations pktcdvd_ops = {
.owner = THIS_MODULE,
.open = pkt_open,
.release = pkt_close,
- .ioctl = pkt_ioctl,
+ .unlocked_ioctl = pkt_ioctl,
.media_changed = pkt_media_changed,
};
@@ -3014,7 +3021,8 @@ static void pkt_get_status(struct pkt_ctrl_command *ctrl_cmd)
mutex_unlock(&ctl_mutex);
}
-static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long pkt_ctl_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
{
void __user *argp = (void __user *)arg;
struct pkt_ctrl_command ctrl_cmd;
@@ -3031,16 +3039,22 @@ static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cm
case PKT_CTRL_CMD_SETUP:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
+ lock_kernel();
ret = pkt_setup_dev(new_decode_dev(ctrl_cmd.dev), &pkt_dev);
ctrl_cmd.pkt_dev = new_encode_dev(pkt_dev);
+ unlock_kernel();
break;
case PKT_CTRL_CMD_TEARDOWN:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
+ lock_kernel();
ret = pkt_remove_dev(new_decode_dev(ctrl_cmd.pkt_dev));
+ unlock_kernel();
break;
case PKT_CTRL_CMD_STATUS:
+ lock_kernel();
pkt_get_status(&ctrl_cmd);
+ unlock_kernel();
break;
default:
return -ENOTTY;
@@ -3053,7 +3067,7 @@ static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cm
static const struct file_operations pkt_ctl_fops = {
- .ioctl = pkt_ctl_ioctl,
+ .unlocked_ioctl = pkt_ctl_ioctl,
.owner = THIS_MODULE,
};
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index f2fff5799dd..9ae05c58423 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -38,6 +38,7 @@
#include <linux/interrupt.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>
+#include <linux/cdrom.h>
#include <linux/module.h>
#include <xen/xenbus.h>
@@ -153,6 +154,40 @@ static int blkif_getgeo(struct block_device *bd, struct hd_geometry *hg)
return 0;
}
+int blkif_ioctl(struct inode *inode, struct file *filep,
+ unsigned command, unsigned long argument)
+{
+ struct blkfront_info *info =
+ inode->i_bdev->bd_disk->private_data;
+ int i;
+
+ dev_dbg(&info->xbdev->dev, "command: 0x%x, argument: 0x%lx\n",
+ command, (long)argument);
+
+ switch (command) {
+ case CDROMMULTISESSION:
+ dev_dbg(&info->xbdev->dev, "FIXME: support multisession CDs later\n");
+ for (i = 0; i < sizeof(struct cdrom_multisession); i++)
+ if (put_user(0, (char __user *)(argument + i)))
+ return -EFAULT;
+ return 0;
+
+ case CDROM_GET_CAPABILITY: {
+ struct gendisk *gd = info->gd;
+ if (gd->flags & GENHD_FL_CD)
+ return 0;
+ return -EINVAL;
+ }
+
+ default:
+ /*printk(KERN_ALERT "ioctl %08x not supported by Xen blkdev\n",
+ command);*/
+ return -EINVAL; /* same return as native Linux */
+ }
+
+ return 0;
+}
+
/*
* blkif_queue_request
*
@@ -324,6 +359,9 @@ static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size)
/* Make sure buffer addresses are sector-aligned. */
blk_queue_dma_alignment(rq, 511);
+ /* Make sure we don't use bounce buffers. */
+ blk_queue_bounce_limit(rq, BLK_BOUNCE_ANY);
+
gd->queue = rq;
return 0;
@@ -546,7 +584,7 @@ static int setup_blkring(struct xenbus_device *dev,
info->ring_ref = GRANT_INVALID_REF;
- sring = (struct blkif_sring *)__get_free_page(GFP_KERNEL);
+ sring = (struct blkif_sring *)__get_free_page(GFP_NOIO | __GFP_HIGH);
if (!sring) {
xenbus_dev_fatal(dev, -ENOMEM, "allocating shared ring");
return -ENOMEM;
@@ -703,7 +741,8 @@ static int blkif_recover(struct blkfront_info *info)
int j;
/* Stage 1: Make a safe copy of the shadow state. */
- copy = kmalloc(sizeof(info->shadow), GFP_KERNEL);
+ copy = kmalloc(sizeof(info->shadow),
+ GFP_NOIO | __GFP_REPEAT | __GFP_HIGH);
if (!copy)
return -ENOMEM;
memcpy(copy, info->shadow, sizeof(info->shadow));
@@ -959,7 +998,7 @@ static int blkif_release(struct inode *inode, struct file *filep)
struct xenbus_device *dev = info->xbdev;
enum xenbus_state state = xenbus_read_driver_state(dev->otherend);
- if (state == XenbusStateClosing)
+ if (state == XenbusStateClosing && info->is_ready)
blkfront_closing(dev);
}
return 0;
@@ -971,6 +1010,7 @@ static struct block_device_operations xlvbd_block_fops =
.open = blkif_open,
.release = blkif_release,
.getgeo = blkif_getgeo,
+ .ioctl = blkif_ioctl,
};
@@ -1006,7 +1046,7 @@ static int __init xlblk_init(void)
module_init(xlblk_init);
-static void xlblk_exit(void)
+static void __exit xlblk_exit(void)
{
return xenbus_unregister_driver(&blkfront);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 14:52:26 +0000