oxmc
f6176009b1
Stages TWRP's GUI engine and standalone tooling as PawletOS-owned modules instead of a bootable/recovery fork, per the plugin-architecture finding in NOTES-ota-recovery-ab.md: stock recovery_main.cpp already dlopen()s librecovery_ui_ext.so and dlsym()s make_device() from it at runtime, so the UI layer doesn't require touching stock bootable/recovery at all. Confirmed via source grep that recovery.cpp/install.cpp have zero references into the partition manager/backup engine/GUI code and vice versa. recovery_ui/: TWRP's gui/, minuitwrp/, libpixelflinger/ (copied verbatim, GPL-3.0), plus a new device/ providing PawletTwrpUI (a ScreenRecoveryUI subclass) and make_device() — written from scratch against stock's RecoveryUI/ScreenRecoveryUI virtual-method contract, since TWRP's own fork never ships a make_device() (every real TWRP device provides its own, and no reference device tree was available to copy from). Top-level Android.bp defines librecovery_ui_pawlet_twrp, the module TARGET_RECOVERY_UI_LIB should point at. gui/Android.bp and minuitwrp/Android.bp had their include_dirs rewritten for the new paths. recovery_toolkit/: partition manager, backup engine (tar/digest/adbbu/apex), filesystem/format support (exfat/dosfstools/gpt/fuse/mtp/crypto), scripting (openrecoveryscript/orscmd/twrpinstall), shared helpers. Source only, no Android.bp yet for any of it. Known gap blocking recovery_ui from actually linking: gui/'s libguitwrp depends on libaosprecovery, built from recovery_toolkit/helpers/twrp.cpp via a Go Soong plugin (libaosprecovery_defaults.go) not yet ported. Neither repo has been build-tested — no local AOSP build environment available in this workspace. See each directory's README.md for a precise done/not-done breakdown.
51 lines
2.1 KiB
Plaintext
51 lines
2.1 KiB
Plaintext
mkdosfs - Make DOS filesystem utilty.
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I wrote this, partially to complement the dosfsck utility written by Werner
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Almesberger (who graciously gave me some pointers when I asked for some
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advice about writing this code), and also to avoid me having to boot DOS
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just to create data partitions (I use Linux to back up DOS :-) ).
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The code is really derived from Remy Card's mke2fs utility - I used this as a
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framework, although all of the filesystem specific stuff was removed and the
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DOS stuff inserted. I believe originally mke2fs was based on Linus' mkfs
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code, hence the acknowledgements in the source code.
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Neither Remy nor Linus have had any involvement with mkdosfs, so if there are
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any bugs they're almost certainly "all my own work".
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The code has been available for ftp since 1st September 1993, and I have yet
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to receive any bug reports from users. I don't know of any bugs, but if you
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do find a bug or have any constructive comments, please mail me!
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The only bug I found with version 0.1 was an obscure fault that could lead
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to an invalid (for MS-DOS, not Linux's dos fs) number of sectors used in the
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file allocation table(s).
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Dave Hudson
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dave@humbug.demon.co.uk
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FAT32 support
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=============
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mkdosfs now can also create filesystems in the new FAT32 format. To do
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this, give mkdosfs a "-F 32" option. FAT32 isn't selected
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automatically (yet), even if very large clusters are needed with
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FAT16. With FAT32 you have two additional options, -R to select the
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number of reserved sectors (usually 32), and -b to select the location
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of the backup boot sector (default 6). Of course such a backup is
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created, as well as the new info sector. On FAT32, the root directory
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is always created as a cluster chain. Sorry, there's no switch to
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generate an old static root dir.
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One bigger bug fix besides FAT32 was to reject filesystems that need a
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16 bit FAT to fit all possible clusters, but the bigger FAT needs some
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more sectors, so the total number of clusters drop below the border
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where MS-DOS expects a 12 bit FAT. So such filesystems would be FAT16,
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but interpreted as FAT32 by DOS. The fix is to reduce filesystem size
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a bit.
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- Roman <roman@hodek.net>
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