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target: Simplify metadata handling when clearing aptpl metadata

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Simpler to just set buf in update_and_write_aptpl(), rather than passing
down to ____core_scsi3_update_aptpl_buf().

Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Andy Grover 2013-05-16 10:40:57 -07:00 committed by Nicholas Bellinger
parent 1f070cc2ac
commit 0607decdca
1 changed files with 9 additions and 30 deletions
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39
drivers/target/target_core_pr.c
View file

@ -1834,8 +1834,7 @@ core_scsi3_decode_spec_i_port(
static int __core_scsi3_update_aptpl_buf(
struct se_device *dev,
unsigned char *buf,
u32 pr_aptpl_buf_len,
int clear_aptpl_metadata)
u32 pr_aptpl_buf_len)
{
struct se_lun *lun;
struct se_portal_group *tpg;
@ -1845,14 +1844,7 @@ static int __core_scsi3_update_aptpl_buf(
int reg_count = 0;
memset(buf, 0, pr_aptpl_buf_len);
/*
* Called to clear metadata once APTPL has been deactivated.
*/
if (clear_aptpl_metadata) {
snprintf(buf, pr_aptpl_buf_len,
"No Registrations or Reservations\n");
return 0;
}
/*
* Walk the registration list..
*/
@ -1937,14 +1929,12 @@ static int __core_scsi3_update_aptpl_buf(
static int core_scsi3_update_aptpl_buf(
struct se_device *dev,
unsigned char *buf,
u32 pr_aptpl_buf_len,
int clear_aptpl_metadata)
u32 pr_aptpl_buf_len)
{
int ret;
spin_lock(&dev->dev_reservation_lock);
ret = __core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len,
clear_aptpl_metadata);
ret = __core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len);
spin_unlock(&dev->dev_reservation_lock);
return ret;
@ -1997,32 +1987,21 @@ core_scsi3_update_and_write_aptpl(struct se_device *dev, unsigned char *in_buf,
u32 in_pr_aptpl_buf_len)
{
unsigned char null_buf[64], *buf;
u32 pr_aptpl_buf_len;
int clear_aptpl_metadata = 0;
int ret;
/*
* Can be called with a NULL pointer from PROUT service action CLEAR
*/
if (!in_buf) {
memset(null_buf, 0, 64);
buf = &null_buf[0];
/*
* This will clear the APTPL metadata to:
* "No Registrations or Reservations" status
*/
pr_aptpl_buf_len = 64;
clear_aptpl_metadata = 1;
snprintf(null_buf, 64, "No Registrations or Reservations\n");
buf = null_buf;
} else {
ret = core_scsi3_update_aptpl_buf(dev, in_buf, in_pr_aptpl_buf_len);
if (ret != 0)
return ret;
buf = in_buf;
pr_aptpl_buf_len = in_pr_aptpl_buf_len;
}
ret = core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len,
clear_aptpl_metadata);
if (ret != 0)
return ret;
/*
* __core_scsi3_write_aptpl_to_file() will call strlen()
* on the passed buf to determine pr_aptpl_buf_len.