[pbs-devel] [PATCH proxmox-backup 3/9] datastore: move utimensat() related constants to module scope

Christian Ebner c.ebner at proxmox.com
Mon Mar 3 14:32:25 CET 2025


On 3/3/25 14:03, Fabian Grünbichler wrote:
> On February 19, 2025 5:48 pm, Christian Ebner wrote:
>> Move the UTIME_NOW and UTIME_OMIT constants from the current function
>> scope to the module scope in order to allow to reuse them.
>>
>> This is in preparation for adding a check to test if the filesystem
>> backing the chunk store honors immediate atime updates by calling
>> utimensat().
>>
>> Signed-off-by: Christian Ebner <c.ebner at proxmox.com>
>> ---
>> changes since version 1:
>> - not present in previous version
>>
>>   pbs-datastore/src/chunk_store.rs | 6 +++---
>>   1 file changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/pbs-datastore/src/chunk_store.rs b/pbs-datastore/src/chunk_store.rs
>> index 29d5874a1..7bdcb0297 100644
>> --- a/pbs-datastore/src/chunk_store.rs
>> +++ b/pbs-datastore/src/chunk_store.rs
>> @@ -18,6 +18,9 @@ use crate::file_formats::{
>>   };
>>   use crate::DataBlob;
>>   
>> +const UTIME_NOW: i64 = (1 << 30) - 1;
>> +const UTIME_OMIT: i64 = (1 << 30) - 2;
> 
> these are exported by libc, couldn't we just use the definition from
> there?

Yes, even better so. Will switch over to the constants exposed by libc 
crate for the next version of the patches, thx!

> 
>> +
>>   /// File system based chunk store
>>   pub struct ChunkStore {
>>       name: String, // used for error reporting
>> @@ -220,9 +223,6 @@ impl ChunkStore {
>>           // unwrap: only `None` in unit tests
>>           assert!(self.locker.is_some());
>>   
>> -        const UTIME_NOW: i64 = (1 << 30) - 1;
>> -        const UTIME_OMIT: i64 = (1 << 30) - 2;
>> -
>>           let times: [libc::timespec; 2] = [
>>               // access time -> update to now
>>               libc::timespec {
>> -- 
>> 2.39.5
>>
>>
>>
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>>
>>
>>
> 
> 
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