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tape: allocate new media set when pool encryption key changes

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This commit is contained in:
Dietmar Maurer
2021-01-20 11:24:58 +01:00
parent 8abe51b71d
commit 6dd0513546
2 changed files with 25 additions and 2 deletions
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25
src/tape/media_pool.rs
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@ -421,7 +421,9 @@ impl MediaPool {
/// longer because of consistency errors.
pub fn current_set_usable(&self) -> Result<bool, Error> {
let media_count = self.current_media_set.media_list().len();
let media_list = self.current_media_set.media_list();
let media_count = media_list.len();
if media_count == 0 {
return Ok(false);
}
@ -429,7 +431,9 @@ impl MediaPool {
let set_uuid = self.current_media_set.uuid();
let mut last_is_writable = false;
for (seq, opt_uuid) in self.current_media_set.media_list().iter().enumerate() {
let mut last_enc: Option<Option<Fingerprint>> = None;
for (seq, opt_uuid) in media_list.iter().enumerate() {
let uuid = match opt_uuid {
None => bail!("media set is incomplete (missing media information)"),
Some(uuid) => uuid,
@ -443,6 +447,23 @@ impl MediaPool {
Some(MediaSetLabel { uuid, ..}) => bail!("media owner error ({} != {}", uuid, set_uuid),
None => bail!("media owner error (no owner)"),
}
if let Some(set) = media.media_set_label() { // always true here
if set.encryption_key_fingerprint != self.encrypt_fingerprint {
bail!("pool encryption key changed");
}
match last_enc {
None => {
last_enc = Some(set.encryption_key_fingerprint.clone());
}
Some(ref last_enc) => {
if last_enc != &set.encryption_key_fingerprint {
bail!("inconsistent media encryption key");
}
}
}
}
match media.status() {
MediaStatus::Full => { /* OK */ },
MediaStatus::Writable if (seq + 1) == media_count => {