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1. Drew DeVault (drewdevault@fosstodon.org)'s status on Tuesday, 21-May-2024 20:35:50 JST Drew DeVault

   Ended up with some extra free time tonight and did a couple more syscalls: unlinkat, mkdirat

   Remaining filesystem-related syscalls are the stat family of calls, rmdirat (or AT_REMOVEDIR I guess), chmod/chown/chgrp, readlinkat, linkat, symlinkat, and utimensat.

   • Drew DeVault (drewdevault@fosstodon.org)'s status on Tuesday, 21-May-2024 20:35:50 JST Drew DeVault

     in reply to

     Implemented a bunch of openat flags this morning: RDONLY/WRONLY/RDWR is now enforced, and O_DIRECTORY, O_APPEND, O_TRUNC, and O_EXCL are now supported

     I chose to diverge from POSIX on O_DIRECTORY because I think it's kind of lame, but I could change my mind if this comes back to bite me when I start porting real-world software

   • Drew DeVault (drewdevault@fosstodon.org)'s status on Tuesday, 21-May-2024 20:35:50 JST Drew DeVault

     in reply to

     Also implemented an inode cache and reference counting for inodes 😃

   • Drew DeVault (drewdevault@fosstodon.org)'s status on Tuesday, 21-May-2024 20:35:50 JST Drew DeVault

     in reply to

     The cache currently serves just to make sure that there is a 1:1 correspondence between inode numbers and inode data structures (so that if several files hold a reference to the same inode they all remain in sync), it does not persist inodes after all references are released... yet. A broader cache system that keeps cached data in unused RAM is planned for the future.