ITS should call fsync #209

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opened 2019-08-07 09:20:08 -05:00 by gilles-peskine-arm · 2 comments

gilles-peskine-arm commented

2019-08-07 09:20:08 -05:00

(Migrated from github.com)

Description

The PSA ITS implementation in Mbed Crypto was originally developed for testing. It modifies files atomically, so it's resilient to interruptions such as a process crash, but it does not call any disk synchronization primitives, so it is not resilient to an operating system crash.

PSA ITS should call a disk synchronization primitive that is configurable at build time. On Unix systems, it should call fsync on the file and on the containing directory.

Cc @paulhowardarm

Issue request type

[ ] Question
[x] Enhancement
[ ] Bug

### Description The PSA ITS implementation in Mbed Crypto was originally developed for testing. It modifies files atomically, so it's resilient to interruptions such as a process crash, but it does not call any disk synchronization primitives, so it is not resilient to an operating system crash. PSA ITS should call a disk synchronization primitive that is configurable at build time. On Unix systems, it should call `fsync` on the file and on the containing directory. Cc @paulhowardarm ### Issue request type [ ] Question [x] Enhancement [ ] Bug

ciarmcom commented

2019-08-07 10:54:34 -05:00

(Migrated from github.com)