shaba/lvm2
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Some ioctl interface changes. (Do we want these?)

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- use status bits (so we can add flags without changing the struct size)
  - use dev_t
This commit is contained in:
Alasdair Kergon 2002-01-14 23:07:32 +00:00
parent 406d287ae1
commit c9dbb9efe7
1 changed files with 23 additions and 11 deletions
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34
libdm/ioctl/libdevmapper.c
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@ -49,13 +49,19 @@ int dm_task_get_info(struct dm_task *dmt, struct dm_info *info)
if (!dmt->dmi)
return 0;
info->exists = dmt->dmi->exists;
info->suspended = dmt->dmi->suspend;
info->open_count = dmt->dmi->open_count;
info->major = dmt->dmi->major;
info->minor = dmt->dmi->minor;
info->read_only = dmt->dmi->read_only;
memset(info, 0, sizeof(*info));
info->exists = dmt->dmi->status & DM_EXISTS_FLAG ? 1 : 0;
if (!info->exists)
return 1;
info->suspended = dmt->dmi->status & DM_SUSPEND_FLAG ? 1 : 0;
info->read_only = dmt->dmi->status & DM_READONLY_FLAG ? 1 : 0;
info->target_count = dmt->dmi->target_count;
info->open_count = dmt->dmi->open_count;
info->major = MAJOR(dmt->dmi->dev);
info->minor = MINOR(dmt->dmi->dev);
return 1;
}
@ -183,10 +189,16 @@ static struct dm_ioctl *_flatten(struct dm_task *dmt)
strncpy(dmi->version, DM_IOCTL_VERSION, sizeof(dmi->version));
dmi->data_size = len;
strncpy(dmi->name, dmt->dev_name, sizeof(dmi->name));
dmi->suspend = (dmt->type == DM_DEVICE_SUSPEND) ? 1 : 0;
dmi->open_count = 0;
dmi->minor = dmt->minor;
dmi->read_only = dmt->read_only;
if (dmt->type == DM_DEVICE_SUSPEND)
dmi->status |= DM_SUSPEND_FLAG;
if (dmt->read_only)
dmi->status |= DM_READONLY_FLAG;
if (dmt->minor > 0) {
dmi->status |= DM_PERSISTENT_DEV_FLAG;
dmi->dev = MKDEV(0, dmt->minor);
}
dmi->target_count = count;
@ -269,7 +281,7 @@ int dm_task_run(struct dm_task *dmt)
switch (dmt->type) {
case DM_DEVICE_CREATE:
add_dev_node(dmt->dev_name, MKDEV(dmi->major, dmi->minor));
add_dev_node(dmt->dev_name, dmi->dev);
break;
case DM_DEVICE_REMOVE: