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authorChristoph Hellwig <hch@lst.de>2006-01-08 01:02:50 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-08 20:13:54 -0800
commita885c8c4316e1c1d2d2c8755da3f3d14f852528d (patch)
treee4f4e7a7657c0944d11c259f8f17ffcd6b2da0f5 /drivers/ide
parent5b0ed2c64d8fdafb5fcfb3baabdd288628b1ff9b (diff)
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[PATCH] Add block_device_operations.getgeo block device method
HDIO_GETGEO is implemented in most block drivers, and all of them have to duplicate the code to copy the structure to userspace, as well as getting the start sector. This patch moves that to common code [1] and adds a ->getgeo method to fill out the raw kernel hd_geometry structure. For many drivers this means ->ioctl can go away now. [1] the s390 block drivers are odd in this respect. xpram sets ->start to 4 always which seems more than odd, and the dasd driver shifts the start offset around, probably because of it's non-standard sector size. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Jens Axboe <axboe@suse.de> Cc: <mike.miller@hp.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Cc: Neil Brown <neilb@cse.unsw.edu.au> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/ide')
-rw-r--r--drivers/ide/ide-disk.c12
-rw-r--r--drivers/ide/ide-floppy.c12
-rw-r--r--drivers/ide/ide.c13
-rw-r--r--drivers/ide/legacy/hd.c24
4 files changed, 32 insertions, 29 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 4b441720b6ba..cab362ea0336 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -1130,6 +1130,17 @@ static int idedisk_release(struct inode *inode, struct file *filp)
return 0;
}
+static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+{
+ struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk);
+ ide_drive_t *drive = idkp->drive;
+
+ geo->heads = drive->bios_head;
+ geo->sectors = drive->bios_sect;
+ geo->cylinders = (u16)drive->bios_cyl; /* truncate */
+ return 0;
+}
+
static int idedisk_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
@@ -1164,6 +1175,7 @@ static struct block_device_operations idedisk_ops = {
.open = idedisk_open,
.release = idedisk_release,
.ioctl = idedisk_ioctl,
+ .getgeo = idedisk_getgeo,
.media_changed = idedisk_media_changed,
.revalidate_disk= idedisk_revalidate_disk
};
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index fba3fffc2d66..5945f551aaaa 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -2031,6 +2031,17 @@ static int idefloppy_release(struct inode *inode, struct file *filp)
return 0;
}
+static int idefloppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+{
+ struct ide_floppy_obj *floppy = ide_floppy_g(bdev->bd_disk);
+ ide_drive_t *drive = floppy->drive;
+
+ geo->heads = drive->bios_head;
+ geo->sectors = drive->bios_sect;
+ geo->cylinders = (u16)drive->bios_cyl; /* truncate */
+ return 0;
+}
+
static int idefloppy_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
@@ -2120,6 +2131,7 @@ static struct block_device_operations idefloppy_ops = {
.open = idefloppy_open,
.release = idefloppy_release,
.ioctl = idefloppy_ioctl,
+ .getgeo = idefloppy_getgeo,
.media_changed = idefloppy_media_changed,
.revalidate_disk= idefloppy_revalidate_disk
};
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 4b524f6b3ecd..b069b13b75a7 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -1278,19 +1278,6 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
up(&ide_setting_sem);
switch (cmd) {
- case HDIO_GETGEO:
- {
- struct hd_geometry geom;
- if (!p || (drive->media != ide_disk && drive->media != ide_floppy)) return -EINVAL;
- geom.heads = drive->bios_head;
- geom.sectors = drive->bios_sect;
- geom.cylinders = (u16)drive->bios_cyl; /* truncate */
- geom.start = get_start_sect(bdev);
- if (copy_to_user(p, &geom, sizeof(struct hd_geometry)))
- return -EFAULT;
- return 0;
- }
-
case HDIO_OBSOLETE_IDENTITY:
case HDIO_GET_IDENTITY:
if (bdev != bdev->bd_contains)
diff --git a/drivers/ide/legacy/hd.c b/drivers/ide/legacy/hd.c
index 242029c9c0ca..6439dec66881 100644
--- a/drivers/ide/legacy/hd.c
+++ b/drivers/ide/legacy/hd.c
@@ -658,22 +658,14 @@ static void do_hd_request (request_queue_t * q)
enable_irq(HD_IRQ);
}
-static int hd_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg)
+static int hd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
- struct hd_i_struct *disk = inode->i_bdev->bd_disk->private_data;
- struct hd_geometry __user *loc = (struct hd_geometry __user *) arg;
- struct hd_geometry g;
-
- if (cmd != HDIO_GETGEO)
- return -EINVAL;
- if (!loc)
- return -EINVAL;
- g.heads = disk->head;
- g.sectors = disk->sect;
- g.cylinders = disk->cyl;
- g.start = get_start_sect(inode->i_bdev);
- return copy_to_user(loc, &g, sizeof g) ? -EFAULT : 0;
+ struct hd_i_struct *disk = bdev->bd_disk->private_data;
+
+ geo->heads = disk->head;
+ geo->sectors = disk->sect;
+ geo->cylinders = disk->cyl;
+ return 0;
}
/*
@@ -695,7 +687,7 @@ static irqreturn_t hd_interrupt(int irq, void *dev_id, struct pt_regs *regs)
}
static struct block_device_operations hd_fops = {
- .ioctl = hd_ioctl,
+ .getgeo = hd_getgeo,
};
/*