Messages in this thread Patch in this message | | | Date | Thu, 27 Feb 2003 14:36:22 +0600 | From | Stephen Cameron <> | Subject | Re: [PATCH] 2.5.63 cciss fix unlikely startup problem |
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Another cciss patch for 2.5.63
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.
-- steve
--- linux-2.5.63/drivers/block/cciss.c~getluninfo_ioctl 2003-02-27 14:11:51.000000000 +0600 +++ linux-2.5.63-scameron/drivers/block/cciss.c 2003-02-27 14:11:51.000000000 +0600 @@ -589,6 +589,24 @@ static int cciss_ioctl(struct inode *ino 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 <MAX_PART; i++) + if (disk->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)); --- linux-2.5.63/include/linux/cciss_ioctl.h~getluninfo_ioctl 2003-02-27 14:11:51.000000000 +0600 +++ linux-2.5.63-scameron/include/linux/cciss_ioctl.h 2003-02-27 14:11:51.000000000 +0600 @@ -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 _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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