bcache: Use scnprintf() for avoiding potential buffer overflow
Since snprintf() returns the would-be-output size instead of the actual output size, the succeeding calls may go beyond the given buffer limit. Fix it by replacing with scnprintf(). Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -154,7 +154,7 @@ static ssize_t bch_snprint_string_list(char *buf,
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size_t i;
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for (i = 0; list[i]; i++)
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out += snprintf(out, buf + size - out,
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out += scnprintf(out, buf + size - out,
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i == selected ? "[%s] " : "%s ", list[i]);
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out[-1] = '\n';
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