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fix: audit fixes — double-unlock guard, PAM OOM code, GPU blur, async fp stop (v0.5.1)

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Security: prevent double unlock() when PAM and fingerprint succeed
simultaneously (ext-session-lock protocol error). Fix PAM callback
returning PAM_AUTH_ERR instead of PAM_BUF_ERR on calloc OOM.

Performance: replace CPU-side Gaussian blur (image crate) with GPU blur
via GskBlurNode + GskRenderer::render_texture(). Eliminates 500ms-2s
main-thread blocking on cold cache for 4K wallpapers. Remove image and
dirs dependencies (~15 transitive crates). Make fingerprint stop()
fire-and-forget async to avoid 6s UI block after successful auth.
This commit is contained in:
nevaforget
2026-03-28 22:06:38 +01:00
parent 48706e5a29
commit 4026f6dafa
8 changed files with 87 additions and 447 deletions
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Cargo.lock
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+2 -217
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