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s390/zcrypt: replace snprintf/sprintf with scnprintf

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snprintf() may not always return the correct size of used bytes but
instead the length the resulting string would be if it would fit into
the buffer. So scnprintf() is the function to use when the real length
of the resulting string is needed.

Replace all occurrences of snprintf() with scnprintf() where the return
code is further processed. Also find and fix some occurrences where
sprintf() was used.

Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Harald Freudenberger
2020-03-12 11:19:55 +01:00
committed by Vasily Gorbik
parent eb3e064b8d
commit 40501c70e3
6 changed files with 76 additions and 75 deletions
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4
drivers/s390/crypto/zcrypt_queue.c
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@@ -42,7 +42,7 @@ static ssize_t online_show(struct device *dev,
{
struct zcrypt_queue *zq = to_ap_queue(dev)->private;
return snprintf(buf, PAGE_SIZE, "%d\n", zq->online);
return scnprintf(buf, PAGE_SIZE, "%d\n", zq->online);
}
static ssize_t online_store(struct device *dev,
@@ -78,7 +78,7 @@ static ssize_t load_show(struct device *dev,
{
struct zcrypt_queue *zq = to_ap_queue(dev)->private;
return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zq->load));
return scnprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zq->load));
}
static DEVICE_ATTR_RO(load);