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

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);