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ide: split off ioctl handling from IDE settings (v2)
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* do write permission and min/max checks in ide_procset_t functions

* ide-disk.c: drive->id is always available so cleanup "multcount" setting
  accordingly

* ide-disk.c: "address" setting was incorrectly defined as type TYPE_INTA,
  fix it by using type TYPE_BYTE and updating ide_drive_t->adressing field,
  the bug didn't trigger because this IDE setting uses custom ->set function

* ide.c: add set_ksettings() for handling HDIO_SET_KEEPSETTINGS ioctl

* ide.c: add set_unmaskirq() for handling HDIO_SET_UNMASKINTR ioctl

* handle ioctls directly in generic_ide_ioclt() and idedisk_ioctl()
  instead of using IDE settings to deal with them

* remove no longer needed ide_find_setting_by_ioctl() and {read,write}_ioctl
  fields from ide_settings_t, also remove now unused TYPE_INTA handling

v2:
* add missing EXPORT_SYMBOL_GPL(ide_setting_sem) needed now for ide-disk

Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
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@bzolnier
bzolnier committed May 9, 2007
1 parent ecfd80e commit 1497943
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Showing 7 changed files with 203 additions and 124 deletions.
2 changes: 1 addition & 1 deletion drivers/ide/ide-cd.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3061,7 +3061,7 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive)

static void ide_cdrom_add_settings(ide_drive_t *drive)
{
ide_add_setting(drive, "dsc_overlap", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
}

/*
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81 changes: 68 additions & 13 deletions drivers/ide/ide-disk.c
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Original file line number Diff line number Diff line change
Expand Up @@ -737,6 +737,9 @@ static int set_multcount(ide_drive_t *drive, int arg)
{
struct request rq;

if (arg < 0 || arg > drive->id->max_multsect)
return -EINVAL;

if (drive->special.b.set_multmode)
return -EBUSY;
ide_init_drive_cmd (&rq);
Expand All @@ -749,6 +752,9 @@ static int set_multcount(ide_drive_t *drive, int arg)

static int set_nowerr(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 1)
return -EINVAL;

if (ide_spin_wait_hwgroup(drive))
return -EBUSY;
drive->nowerr = arg;
Expand Down Expand Up @@ -800,6 +806,9 @@ static int write_cache(ide_drive_t *drive, int arg)
ide_task_t args;
int err = 1;

if (arg < 0 || arg > 1)
return -EINVAL;

if (ide_id_has_flush_cache(drive->id)) {
memset(&args, 0, sizeof(ide_task_t));
args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ?
Expand Down Expand Up @@ -835,6 +844,9 @@ static int set_acoustic (ide_drive_t *drive, int arg)
{
ide_task_t args;

if (arg < 0 || arg > 254)
return -EINVAL;

memset(&args, 0, sizeof(ide_task_t));
args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ? SETFEATURES_EN_AAM :
SETFEATURES_DIS_AAM;
Expand All @@ -855,6 +867,9 @@ static int set_acoustic (ide_drive_t *drive, int arg)
*/
static int set_lba_addressing(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 2)
return -EINVAL;

drive->addressing = 0;

if (HWIF(drive)->no_lba48)
Expand All @@ -870,18 +885,18 @@ static void idedisk_add_settings(ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;

ide_add_setting(drive, "bios_cyl", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL);
ide_add_setting(drive, "bios_head", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
ide_add_setting(drive, "bios_sect", SETTING_RW, -1, -1, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
ide_add_setting(drive, "address", SETTING_RW, HDIO_GET_ADDRESS, HDIO_SET_ADDRESS, TYPE_INTA, 0, 2, 1, 1, &drive->addressing, set_lba_addressing);
ide_add_setting(drive, "bswap", SETTING_READ, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL);
ide_add_setting(drive, "multcount", id ? SETTING_RW : SETTING_READ, HDIO_GET_MULTCOUNT, HDIO_SET_MULTCOUNT, TYPE_BYTE, 0, id ? id->max_multsect : 0, 1, 1, &drive->mult_count, set_multcount);
ide_add_setting(drive, "nowerr", SETTING_RW, HDIO_GET_NOWERR, HDIO_SET_NOWERR, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr);
ide_add_setting(drive, "lun", SETTING_RW, -1, -1, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL);
ide_add_setting(drive, "wcache", SETTING_RW, HDIO_GET_WCACHE, HDIO_SET_WCACHE, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache);
ide_add_setting(drive, "acoustic", SETTING_RW, HDIO_GET_ACOUSTIC, HDIO_SET_ACOUSTIC, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic);
ide_add_setting(drive, "failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL);
ide_add_setting(drive, "max_failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL);
ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL);
ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1, &drive->addressing, set_lba_addressing);
ide_add_setting(drive, "bswap", SETTING_READ, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL);
ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, id->max_multsect, 1, 1, &drive->mult_count, set_multcount);
ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr);
ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL);
ide_add_setting(drive, "wcache", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache);
ide_add_setting(drive, "acoustic", SETTING_RW, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic);
ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL);
ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL);
}

static void idedisk_setup (ide_drive_t *drive)
Expand Down Expand Up @@ -1140,9 +1155,49 @@ static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
static int idedisk_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
unsigned long flags;
struct block_device *bdev = inode->i_bdev;
struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk);
return generic_ide_ioctl(idkp->drive, file, bdev, cmd, arg);
ide_drive_t *drive = idkp->drive;
int err, (*setfunc)(ide_drive_t *, int);
u8 *val;

switch (cmd) {
case HDIO_GET_ADDRESS: val = &drive->addressing; goto read_val;
case HDIO_GET_MULTCOUNT: val = &drive->mult_count; goto read_val;
case HDIO_GET_NOWERR: val = &drive->nowerr; goto read_val;
case HDIO_GET_WCACHE: val = &drive->wcache; goto read_val;
case HDIO_GET_ACOUSTIC: val = &drive->acoustic; goto read_val;
case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val;
case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val;
case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val;
case HDIO_SET_WCACHE: setfunc = write_cache; goto set_val;
case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val;
}

return generic_ide_ioctl(drive, file, bdev, cmd, arg);

read_val:
down(&ide_setting_sem);
spin_lock_irqsave(&ide_lock, flags);
err = *val;
spin_unlock_irqrestore(&ide_lock, flags);
up(&ide_setting_sem);
return err >= 0 ? put_user(err, (long __user *)arg) : err;

set_val:
if (bdev != bdev->bd_contains)
err = -EINVAL;
else {
if (!capable(CAP_SYS_ADMIN))
err = -EACCES;
else {
down(&ide_setting_sem);
err = setfunc(drive, arg);
up(&ide_setting_sem);
}
}
return err;
}

static int idedisk_media_changed(struct gendisk *disk)
Expand Down
10 changes: 5 additions & 5 deletions drivers/ide/ide-floppy.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1816,12 +1816,12 @@ static void idefloppy_add_settings(ide_drive_t *drive)
idefloppy_floppy_t *floppy = drive->driver_data;

/*
* drive setting name read/write ioctl ioctl data type min max mul_factor div_factor data pointer set function
* drive setting name read/write data type min max mul_factor div_factor data pointer set function
*/
ide_add_setting(drive, "bios_cyl", SETTING_RW, -1, -1, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL);
ide_add_setting(drive, "bios_head", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
ide_add_setting(drive, "bios_sect", SETTING_RW, -1, -1, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
ide_add_setting(drive, "ticks", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL);
ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 1023, 1, 1, &drive->bios_cyl, NULL);
ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL);
}

/*
Expand Down
30 changes: 15 additions & 15 deletions drivers/ide/ide-tape.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4566,22 +4566,22 @@ static void idetape_add_settings (ide_drive_t *drive)
idetape_tape_t *tape = drive->driver_data;

/*
* drive setting name read/write ioctl ioctl data type min max mul_factor div_factor data pointer set function
* drive setting name read/write data type min max mul_factor div_factor data pointer set function
*/
ide_add_setting(drive, "buffer", SETTING_READ, -1, -1, TYPE_SHORT, 0, 0xffff, 1, 2, &tape->capabilities.buffer_size, NULL);
ide_add_setting(drive, "pipeline_min", SETTING_RW, -1, -1, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->min_pipeline, NULL);
ide_add_setting(drive, "pipeline", SETTING_RW, -1, -1, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_stages, NULL);
ide_add_setting(drive, "pipeline_max", SETTING_RW, -1, -1, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_pipeline, NULL);
ide_add_setting(drive, "pipeline_used",SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_stages, NULL);
ide_add_setting(drive, "pipeline_pending",SETTING_READ,-1, -1, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_pending_stages, NULL);
ide_add_setting(drive, "speed", SETTING_READ, -1, -1, TYPE_SHORT, 0, 0xffff, 1, 1, &tape->capabilities.speed, NULL);
ide_add_setting(drive, "stage", SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, 1, 1024, &tape->stage_size, NULL);
ide_add_setting(drive, "tdsc", SETTING_RW, -1, -1, TYPE_INT, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX, 1000, HZ, &tape->best_dsc_rw_frequency, NULL);
ide_add_setting(drive, "dsc_overlap", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
ide_add_setting(drive, "pipeline_head_speed_c",SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, 1, 1, &tape->controlled_pipeline_head_speed, NULL);
ide_add_setting(drive, "pipeline_head_speed_u",SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, 1, 1, &tape->uncontrolled_pipeline_head_speed, NULL);
ide_add_setting(drive, "avg_speed", SETTING_READ, -1, -1, TYPE_INT, 0, 0xffff, 1, 1, &tape->avg_speed, NULL);
ide_add_setting(drive, "debug_level",SETTING_RW, -1, -1, TYPE_INT, 0, 0xffff, 1, 1, &tape->debug_level, NULL);
ide_add_setting(drive, "buffer", SETTING_READ, TYPE_SHORT, 0, 0xffff, 1, 2, &tape->capabilities.buffer_size, NULL);
ide_add_setting(drive, "pipeline_min", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->min_pipeline, NULL);
ide_add_setting(drive, "pipeline", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_stages, NULL);
ide_add_setting(drive, "pipeline_max", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_pipeline, NULL);
ide_add_setting(drive, "pipeline_used", SETTING_READ, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_stages, NULL);
ide_add_setting(drive, "pipeline_pending", SETTING_READ, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_pending_stages, NULL);
ide_add_setting(drive, "speed", SETTING_READ, TYPE_SHORT, 0, 0xffff, 1, 1, &tape->capabilities.speed, NULL);
ide_add_setting(drive, "stage", SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1024, &tape->stage_size, NULL);
ide_add_setting(drive, "tdsc", SETTING_RW, TYPE_INT, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX, 1000, HZ, &tape->best_dsc_rw_frequency, NULL);
ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
ide_add_setting(drive, "pipeline_head_speed_c",SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1, &tape->controlled_pipeline_head_speed, NULL);
ide_add_setting(drive, "pipeline_head_speed_u",SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1, &tape->uncontrolled_pipeline_head_speed,NULL);
ide_add_setting(drive, "avg_speed", SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1, &tape->avg_speed, NULL);
ide_add_setting(drive, "debug_level", SETTING_RW, TYPE_INT, 0, 0xffff, 1, 1, &tape->debug_level, NULL);
}

/*
Expand Down
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