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xen-blkback: enlarge the array size of blkback name

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The blkback name is like blkback.domid.xvd[a-z], if domid has four digits
(means larger than 1000), then the backmost xvd wouldn't be fully shown.

Define a BLKBACK_NAME_LEN macro to be 20, enlarge the array size of
blkback name, so it will be fully shown in any case.

Signed-off-by: Tao Chen <boby.chen@huawei.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
This commit is contained in:
Tao Chen 2015-03-27 13:15:54 +00:00 committed by Konrad Rzeszutek Wilk
parent de9ad6d4ed
commit 1375590d3e
1 changed files with 5 additions and 2 deletions
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7
drivers/block/xen-blkback/xenbus.c
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@ -21,6 +21,9 @@
#include <xen/grant_table.h>
#include "common.h"
/* Enlarge the array size in order to fully show blkback name. */
#define BLKBACK_NAME_LEN (20)
struct backend_info {
struct xenbus_device *dev;
struct xen_blkif *blkif;
@ -70,7 +73,7 @@ static int blkback_name(struct xen_blkif *blkif, char *buf)
else
devname = devpath;
snprintf(buf, TASK_COMM_LEN, "blkback.%d.%s", blkif->domid, devname);
snprintf(buf, BLKBACK_NAME_LEN, "blkback.%d.%s", blkif->domid, devname);
kfree(devpath);
return 0;
@ -79,7 +82,7 @@ static int blkback_name(struct xen_blkif *blkif, char *buf)
static void xen_update_blkif_status(struct xen_blkif *blkif)
{
int err;
char name[TASK_COMM_LEN];
char name[BLKBACK_NAME_LEN];
/* Not ready to connect? */
if (!blkif->irq || !blkif->vbd.bdev)