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kernel/sysctl_binary.c: use scnprintf() instead of snprintf()

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snprintf() will return the 'ideal' length which may be larger than real
buffer length, if we only want to use real length, need use scnprintf()
instead of.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Chen Gang 2013-11-12 15:11:22 -08:00 committed by Linus Torvalds
parent 7833819d2e
commit f02147ef19
1 changed files with 3 additions and 3 deletions
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6
kernel/sysctl_binary.c
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@ -1024,7 +1024,7 @@ static ssize_t bin_intvec(struct file *file,
if (get_user(value, vec + i))
goto out_kfree;
str += snprintf(str, end - str, "%lu\t", value);
str += scnprintf(str, end - str, "%lu\t", value);
}
result = kernel_write(file, buffer, str - buffer, 0);
@ -1095,7 +1095,7 @@ static ssize_t bin_ulongvec(struct file *file,
if (get_user(value, vec + i))
goto out_kfree;
str += snprintf(str, end - str, "%lu\t", value);
str += scnprintf(str, end - str, "%lu\t", value);
}
result = kernel_write(file, buffer, str - buffer, 0);
@ -1205,7 +1205,7 @@ static ssize_t bin_dn_node_address(struct file *file,
if (get_user(dnaddr, (__le16 __user *)newval))
goto out;
len = snprintf(buf, sizeof(buf), "%hu.%hu",
len = scnprintf(buf, sizeof(buf), "%hu.%hu",
le16_to_cpu(dnaddr) >> 10,
le16_to_cpu(dnaddr) & 0x3ff);