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netconsole: switch to kstrto*() functions

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Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Dobriyan 2011-05-07 20:33:13 +00:00 committed by David S. Miller
parent 0693e88e6c
commit 99f823f98f
1 changed files with 14 additions and 48 deletions
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62
drivers/net/netconsole.c
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@ -241,34 +241,6 @@ static struct netconsole_target *to_target(struct config_item *item)
NULL;
}
/*
* Wrapper over simple_strtol (base 10) with sanity and range checking.
* We return (signed) long only because we may want to return errors.
* Do not use this to convert numbers that are allowed to be negative.
*/
static long strtol10_check_range(const char *cp, long min, long max)
{
long ret;
char *p = (char *) cp;
WARN_ON(min < 0);
WARN_ON(max < min);
ret = simple_strtol(p, &p, 10);
if (*p && (*p != '\n')) {
printk(KERN_ERR "netconsole: invalid input\n");
return -EINVAL;
}
if ((ret < min) || (ret > max)) {
printk(KERN_ERR "netconsole: input %ld must be between "
"%ld and %ld\n", ret, min, max);
return -EINVAL;
}
return ret;
}
/*
* Attribute operations for netconsole_target.
*/
@ -327,12 +299,14 @@ static ssize_t store_enabled(struct netconsole_target *nt,
const char *buf,
size_t count)
{
int enabled;
int err;
long enabled;
enabled = strtol10_check_range(buf, 0, 1);
if (enabled < 0)
return enabled;
err = kstrtoint(buf, 10, &enabled);
if (err < 0)
return err;
if (enabled < 0 || enabled > 1)
return -EINVAL;
if (enabled) { /* 1 */
@ -384,8 +358,7 @@ static ssize_t store_local_port(struct netconsole_target *nt,
const char *buf,
size_t count)
{
long local_port;
#define __U16_MAX ((__u16) ~0U)
int rv;
if (nt->enabled) {
printk(KERN_ERR "netconsole: target (%s) is enabled, "
@ -394,12 +367,9 @@ static ssize_t store_local_port(struct netconsole_target *nt,
return -EINVAL;
}
local_port = strtol10_check_range(buf, 0, __U16_MAX);
if (local_port < 0)
return local_port;
nt->np.local_port = local_port;
rv = kstrtou16(buf, 10, &nt->np.local_port);
if (rv < 0)
return rv;
return strnlen(buf, count);
}
@ -407,8 +377,7 @@ static ssize_t store_remote_port(struct netconsole_target *nt,
const char *buf,
size_t count)
{
long remote_port;
#define __U16_MAX ((__u16) ~0U)
int rv;
if (nt->enabled) {
printk(KERN_ERR "netconsole: target (%s) is enabled, "
@ -417,12 +386,9 @@ static ssize_t store_remote_port(struct netconsole_target *nt,
return -EINVAL;
}
remote_port = strtol10_check_range(buf, 0, __U16_MAX);
if (remote_port < 0)
return remote_port;
nt->np.remote_port = remote_port;
rv = kstrtou16(buf, 10, &nt->np.remote_port);
if (rv < 0)
return rv;
return strnlen(buf, count);
}