bootscripts: seeed-rk35xx: harden armbianEnv.txt import against CRLF and invalid fdtfile - #10474
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Included review availability: Your plan provides up to 8 included reviews per hour; 5 remain after this review. 📝 WalkthroughWalkthroughThe boot script strips carriage returns during environment imports and validates the imported ChangesBoot configuration validation
Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: ⚪ Minimal · up to The change hardens armbianEnv.txt handling for CRLF and invalid device-tree values; no actionable merge-blocking risk remains at the current head. Possibly related PRs
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Inline comments:
In `@config/bootscripts/boot-seeed-rk35xx.cmd`:
- Around line 38-45: Clear fdtfile alongside rootdev before importing
armbianEnv.txt, so validation cannot reuse a stale U-Boot environment value when
the file provides no setting. Preserve the existing DTB probe and .dist fallback
flow.
- Around line 27-33: Update the armbianEnv.txt import command in the boot script
to use env import with both -t and -r, while preserving the existing fallback
behavior when the file is unreadable or invalid.
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Mkiring
changed the title
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Actionable comments posted: 1
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Inline comments:
In `@config/bootscripts/boot-seeed-rk35xx.cmd`:
- Line 34: Update the boot environment initialization before the initial
armbianEnv.txt import to clear both rootdev and fdtfile, ensuring inherited
fdtfile values cannot bypass the later .dist fallback when the import fails or
imports no variables.
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…and invalid fdtfile armbianEnv.txt corruption comes in two flavours. Power loss can fill the file with 0xFF (eMMC erased block) or NUL, which passes "env import -t" without error but imports zero variables. Editor-induced CRLF pollution is sneakier: plain "env import -t" keeps the trailing \r in every value (byte-verified on a reComputer RK3588: re-exported values end in 0d 0a), and hush string comparison silently strips it, so neither "test -z" nor "=" can catch the corruption. Use "env import -t -r", which strips the CR at import. These boards ship the Radxa next-dev-v2024.10 U-Boot (its banner says 2017.09 because Rockchip pins the version number); -r is implemented via himport_r(crlf_is_lf) and device testing confirms imported values come out clean. As defense in depth, clear rootdev and fdtfile before the import, then probe the imported file by loading the DTB its fdtfile points to: a stale built-in fdtfile cannot satisfy the probe when a corrupt file imports zero variables. On probe failure (stale fdtfile from an older image, a manual typo, or a U-Boot where -r is unavailable) restore all key vars from the clean armbianEnv.txt.dist baseline maintained by the build hook and OTA sync. Signed-off-by: Mkirin <haohao.wang@seeed.cc>
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✅ This PR has been reviewed and approved — all set for merge! |
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Summary
armbianEnv.txtcorruption comes in two flavours: 0xFF/NUL fill (power loss; passesenv import -tbut imports zero variables) and editor-induced CRLF pollution, where plainenv import -tkeeps a trailing\rin every value (byte-verified on a reComputer RK3588) while hush string comparison silently strips it — so neithertest -znor=can catch it.env import -t -r, which strips the CR at import. These boards ship the Radxanext-dev-v2024.10U-Boot (banner says "2017.09" — Rockchip pins the version number in the Makefile);-ris implemented viahimport_r(crlf_is_lf)and device testing confirms imported values come out clean. CRLF'd files now import cleanly and keep their user settings instead of falling back to.dist.dtb/${fdtfile}: on failure (stale fdtfile from an older image, a typo, a missing dtb, or a U-Boot where-ris unavailable) clearrootdev/fdtfileand restore all key vars from the cleanarmbianEnv.txt.distbaseline.Testing
2017.09-S39cd-…= Radxa next-dev-v2024.10): importing a hand-builttestkey=val1\r\nbuffer and re-exporting gives... 0d 0awith plainenv import -tbut... 0awith-r.distfallback (device-tested 2026-08-14)armbianEnv.txt— no warning, normal bootarmbianEnv.txt(unix2dos) — boots normally with user settings (CR stripped at import), no.distfallback.distfallback (same path)Summary by CodeRabbit