From ce7fe909ae348cbcf14fd83480572d283a226ad4 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Sun, 2 Mar 2003 04:38:23 -0800 Subject: [PATCH] [PATCH] cciss: add CCISS_GETLUNINFO ioctl Patch from Stephen Cameron Add CCISS_GETLUNINFO ioctl. This ioctl returns the LUNID, number of partitions, and current number of opens on a logical volume. Used by the array config utility or any app that needs to send passthrough commands to a particular logical disk. --- drivers/block/cciss.c | 18 ++++++++++++++++++ include/linux/cciss_ioctl.h | 6 ++++++ 2 files changed, 24 insertions(+) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 9891ae651ac8d..d191f96a58754 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -577,6 +577,24 @@ static int cciss_ioctl(struct inode *inode, struct file *filep, case CCISS_REVALIDVOLS: return( revalidate_allvol(inode->i_rdev)); + case CCISS_GETLUNINFO: { + LogvolInfo_struct luninfo; + struct gendisk *disk = hba[ctlr]->gendisk[dsk]; + drive_info_struct *drv = &hba[ctlr]->drv[dsk]; + int i; + + luninfo.LunID = drv->LunID; + luninfo.num_opens = drv->usage_count; + luninfo.num_parts = 0; + /* count partitions 1 to 15 with sizes > 0 */ + for(i=1; i part[i].nr_sects != 0) + luninfo.num_parts++; + if (copy_to_user((void *) arg, &luninfo, + sizeof(LogvolInfo_struct))) + return -EFAULT; + return(0); + } case CCISS_DEREGDISK: return( deregister_disk(ctlr,dsk)); diff --git a/include/linux/cciss_ioctl.h b/include/linux/cciss_ioctl.h index 2f7e00b5b5817..e706b9406ef78 100644 --- a/include/linux/cciss_ioctl.h +++ b/include/linux/cciss_ioctl.h @@ -169,6 +169,11 @@ typedef struct _IOCTL_Command_struct { BYTE *buf; } IOCTL_Command_struct; +typedef struct _LogvolInfo_struct{ + __u32 LunID; + int num_opens; /* number of opens on the logical volume */ + int num_parts; /* number of partitions configured on logvol */ +} LogvolInfo_struct; #define CCISS_GETPCIINFO _IOR(CCISS_IOC_MAGIC, 1, cciss_pci_info_struct) @@ -190,5 +195,6 @@ typedef struct _IOCTL_Command_struct { #define CCISS_REGNEWDISK _IOW(CCISS_IOC_MAGIC, 13, int) #define CCISS_REGNEWD _IO(CCISS_IOC_MAGIC, 14) +#define CCISS_GETLUNINFO _IOR(CCISS_IOC_MAGIC, 17, LogvolInfo_struct) #endif -- 2.53.0