bonding: Remove trailing NULs from sysfs interface.
From: Wagner Ferenc <wferi@niif.hu>
Also remove trailing spaces from multivalued files.
This fixes output like for example:
$ od -c /sys/class/net/bond0/bonding/slaves
0000000 e t h - l e f t e t h - r i g
0000020 h t \n \0
0000025
It mostly entails deleting '+1'-s after sprintf() calls: the return value
of sprintf is the number of characters printed, without the closing NUL,
ie. exactly what the sysfs interface requires. The three multivalue
cases are different, because they also have to swallow back a trailing
space.
Signed-off-by: Ferenc Wagner <wferi@niif.hu>
Acked-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index b29330d..a3f1b4a 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -86,14 +86,13 @@
/* not enough space for another interface name */
if ((PAGE_SIZE - res) > 10)
res = PAGE_SIZE - 10;
- res += sprintf(buffer + res, "++more++");
+ res += sprintf(buffer + res, "++more++ ");
break;
}
res += sprintf(buffer + res, "%s ",
bond->dev->name);
}
- res += sprintf(buffer + res, "\n");
- res++;
+ if (res) buffer[res-1] = '\n'; /* eat the leftover space */
up_read(&(bonding_rwsem));
return res;
}
@@ -235,14 +234,13 @@
/* not enough space for another interface name */
if ((PAGE_SIZE - res) > 10)
res = PAGE_SIZE - 10;
- res += sprintf(buf + res, "++more++");
+ res += sprintf(buf + res, "++more++ ");
break;
}
res += sprintf(buf + res, "%s ", slave->dev->name);
}
read_unlock(&bond->lock);
- res += sprintf(buf + res, "\n");
- res++;
+ if (res) buf[res-1] = '\n'; /* eat the leftover space */
return res;
}
@@ -406,7 +404,7 @@
return sprintf(buf, "%s %d\n",
bond_mode_tbl[bond->params.mode].modename,
- bond->params.mode) + 1;
+ bond->params.mode);
}
static ssize_t bonding_store_mode(struct device *d,
@@ -463,11 +461,11 @@
if ((bond->params.mode != BOND_MODE_XOR) &&
(bond->params.mode != BOND_MODE_8023AD)) {
// Not Applicable
- count = sprintf(buf, "NA\n") + 1;
+ count = sprintf(buf, "NA\n");
} else {
count = sprintf(buf, "%s %d\n",
xmit_hashtype_tbl[bond->params.xmit_policy].modename,
- bond->params.xmit_policy) + 1;
+ bond->params.xmit_policy);
}
return count;
@@ -527,7 +525,7 @@
return sprintf(buf, "%s %d\n",
arp_validate_tbl[bond->params.arp_validate].modename,
- bond->params.arp_validate) + 1;
+ bond->params.arp_validate);
}
static ssize_t bonding_store_arp_validate(struct device *d,
@@ -627,7 +625,7 @@
{
struct bonding *bond = to_bond(d);
- return sprintf(buf, "%d\n", bond->params.arp_interval) + 1;
+ return sprintf(buf, "%d\n", bond->params.arp_interval);
}
static ssize_t bonding_store_arp_interval(struct device *d,
@@ -711,10 +709,7 @@
res += sprintf(buf + res, "%u.%u.%u.%u ",
NIPQUAD(bond->params.arp_targets[i]));
}
- if (res)
- res--; /* eat the leftover space */
- res += sprintf(buf + res, "\n");
- res++;
+ if (res) buf[res-1] = '\n'; /* eat the leftover space */
return res;
}
@@ -815,7 +810,7 @@
{
struct bonding *bond = to_bond(d);
- return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon) + 1;
+ return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon);
}
static ssize_t bonding_store_downdelay(struct device *d,
@@ -872,7 +867,7 @@
{
struct bonding *bond = to_bond(d);
- return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon) + 1;
+ return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon);
}
@@ -936,7 +931,7 @@
return sprintf(buf, "%s %d\n",
bond_lacp_tbl[bond->params.lacp_fast].modename,
- bond->params.lacp_fast) + 1;
+ bond->params.lacp_fast);
}
static ssize_t bonding_store_lacp(struct device *d,
@@ -992,7 +987,7 @@
{
struct bonding *bond = to_bond(d);
- return sprintf(buf, "%d\n", bond->params.miimon) + 1;
+ return sprintf(buf, "%d\n", bond->params.miimon);
}
static ssize_t bonding_store_miimon(struct device *d,
@@ -1083,9 +1078,9 @@
struct bonding *bond = to_bond(d);
if (bond->primary_slave)
- count = sprintf(buf, "%s\n", bond->primary_slave->dev->name) + 1;
+ count = sprintf(buf, "%s\n", bond->primary_slave->dev->name);
else
- count = sprintf(buf, "\n") + 1;
+ count = sprintf(buf, "\n");
return count;
}
@@ -1149,7 +1144,7 @@
{
struct bonding *bond = to_bond(d);
- return sprintf(buf, "%d\n", bond->params.use_carrier) + 1;
+ return sprintf(buf, "%d\n", bond->params.use_carrier);
}
static ssize_t bonding_store_carrier(struct device *d,
@@ -1198,9 +1193,9 @@
read_unlock(&bond->curr_slave_lock);
if (USES_PRIMARY(bond->params.mode) && curr)
- count = sprintf(buf, "%s\n", curr->dev->name) + 1;
+ count = sprintf(buf, "%s\n", curr->dev->name);
else
- count = sprintf(buf, "\n") + 1;
+ count = sprintf(buf, "\n");
return count;
}
@@ -1295,7 +1290,7 @@
curr = bond->curr_active_slave;
read_unlock(&bond->curr_slave_lock);
- return sprintf(buf, "%s\n", (curr) ? "up" : "down") + 1;
+ return sprintf(buf, "%s\n", (curr) ? "up" : "down");
}
static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL);
@@ -1312,10 +1307,10 @@
if (bond->params.mode == BOND_MODE_8023AD) {
struct ad_info ad_info;
- count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id) + 1;
+ count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.aggregator_id);
}
else
- count = sprintf(buf, "\n") + 1;
+ count = sprintf(buf, "\n");
return count;
}
@@ -1334,10 +1329,10 @@
if (bond->params.mode == BOND_MODE_8023AD) {
struct ad_info ad_info;
- count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports) + 1;
+ count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0: ad_info.ports);
}
else
- count = sprintf(buf, "\n") + 1;
+ count = sprintf(buf, "\n");
return count;
}
@@ -1356,10 +1351,10 @@
if (bond->params.mode == BOND_MODE_8023AD) {
struct ad_info ad_info;
- count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key) + 1;
+ count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.actor_key);
}
else
- count = sprintf(buf, "\n") + 1;
+ count = sprintf(buf, "\n");
return count;
}
@@ -1378,10 +1373,10 @@
if (bond->params.mode == BOND_MODE_8023AD) {
struct ad_info ad_info;
- count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key) + 1;
+ count = sprintf(buf, "%d\n", (bond_3ad_get_active_agg_info(bond, &ad_info)) ? 0 : ad_info.partner_key);
}
else
- count = sprintf(buf, "\n") + 1;
+ count = sprintf(buf, "\n");
return count;
}
@@ -1403,12 +1398,11 @@
struct ad_info ad_info;
if (!bond_3ad_get_active_agg_info(bond, &ad_info)) {
count = sprintf(buf,"%s\n",
- print_mac(mac, ad_info.partner_system))
- + 1;
+ print_mac(mac, ad_info.partner_system));
}
}
else
- count = sprintf(buf, "\n") + 1;
+ count = sprintf(buf, "\n");
return count;
}