[FUSE] Complete Error to Errno mapping for filesystem mounts #18

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opened 2026-02-14 21:21:27 +00:00 by thabeta · 0 comments

thabeta commented

2026-02-14 21:21:27 +00:00

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The Error enum in src/error.rs provides a to_errno() method for FUSE compatibility, but many variants return a generic EIO or are incorrectly mapped.

Issue: Users mounting the FS via FUSE see deceptive error messages (e.g., IO Error when it is actually Permission Denied).

Proposed Fix: Map specific error variants (like missing files or storage limits) to their appropriate libc counterparts (ENOENT, EDQUOT, EACCES, etc.).

The `Error` enum in `src/error.rs` provides a `to_errno()` method for FUSE compatibility, but many variants return a generic `EIO` or are incorrectly mapped. **Issue:** Users mounting the FS via FUSE see deceptive error messages (e.g., IO Error when it is actually Permission Denied). **Proposed Fix:** Map specific error variants (like missing files or storage limits) to their appropriate `libc` counterparts (ENOENT, EDQUOT, EACCES, etc.).