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stability: replace sprintf with snprintf to avoid potential overflows

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Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
This commit is contained in:
Alex Tereschenko
2017-05-13 18:08:00 +02:00
parent 918e2b18e2
commit 0654183b9a
5 changed files with 7 additions and 7 deletions
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4
src/pwm/pwm.c
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@@ -102,8 +102,8 @@ mraa_pwm_write_duty(mraa_pwm_context dev, int duty)
return MRAA_ERROR_INVALID_RESOURCE;
}
}
char bu[64];
int length = sprintf(bu, "%d", duty);
char bu[MAX_SIZE];
int length = snprintf(bu, MAX_SIZE, "%d", duty);
if (write(dev->duty_fp, bu, length * sizeof(char)) == -1)
{
syslog(LOG_ERR, "pwm%i write_duty: Failed to write to duty_cycle: %s", dev->pin, strerror(errno));