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Fix exit code bit parsing

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The previous code was parsing left-to-right, but the bits are actually
numbered right-to-left (least to most significant). Instead of
converting to strings, just use bitmasks.

Fixes https://github.com/prometheus-community/smartctl_exporter/issues/22

Signed-off-by: Eric Culp <eculperic@gmail.com>
This commit is contained in:
Eric Culp 2022-03-17 16:52:15 -06:00
parent e27581d56a
commit 6b6fd628d2
1 changed files with 9 additions and 10 deletions
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19
readjson.go
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@ -100,32 +100,31 @@ func readData(device string) (gjson.Result, error) {
func resultCodeIsOk(SMARTCtlResult int64) bool {
result := true
if SMARTCtlResult > 0 {
bits := fmt.Sprintf("%08b", SMARTCtlResult)
// logger.Debug("Return code: %d: %s", SMARTCtlResult, bits)
if bits[0] == '1' {
b := SMARTCtlResult
if (b & 1) != 0 {
logger.Error("Command line did not parse.")
result = false
}
if bits[1] == '1' {
if (b & (1 << 1)) != 0 {
logger.Error("Device open failed, device did not return an IDENTIFY DEVICE structure, or device is in a low-power mode")
result = false
}
if bits[2] == '1' {
if (b & (1 << 2)) != 0 {
logger.Warning("Some SMART or other ATA command to the disk failed, or there was a checksum error in a SMART data structure")
}
if bits[3] == '1' {
if (b & (1 << 3)) != 0 {
logger.Warning("SMART status check returned 'DISK FAILING'.")
}
if bits[4] == '1' {
if (b & (1 << 4)) != 0 {
logger.Warning("We found prefail Attributes <= threshold.")
}
if bits[5] == '1' {
if (b & (1 << 5)) != 0 {
logger.Warning("SMART status check returned 'DISK OK' but we found that some (usage or prefail) Attributes have been <= threshold at some time in the past.")
}
if bits[6] == '1' {
if (b & (1 << 6)) != 0 {
logger.Warning("The device error log contains records of errors.")
}
if bits[7] == '1' {
if (b & (1 << 7)) != 0 {
logger.Warning("The device self-test log contains records of errors. [ATA only] Failed self-tests outdated by a newer successful extended self-test are ignored.")
}
}