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Daniel Rosenberg 62ae9b0430 ANDROID: fuse: Add flag for Android passthrough support
Android does not work with unmodified Android passthrough.
This feature flag marks that those modifications are in place, and that
passthrough will function as Android expects.

Bug: 376007121
Test: cat /sys/fs/fuse/fuse_passthrough
Change-Id: I2cd2a6f646e2b6172b5ecc5cc699318395082f63
Signed-off-by: Daniel Rosenberg <drosen@google.com>
2025-02-11 15:17:14 -08:00

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What: /sys/fs/fuse/features/fuse_bpf
Date: December 2022
Contact: Paul Lawrence <paullawrence@google.com>
Description:
Read-only file that contains the word 'supported' if fuse-bpf is
supported, does not exist otherwise
What: /sys/fs/fuse/features/fuse_passthrough
Date: February 2025
Contact: Daniel Rosenberg <drosen@google.com>
Description:
Read-only file that contains the word 'supported' if fuse
passthrough with Android modifications is supported, does not
exist otherwise
What: /sys/fs/fuse/bpf_prog_type_fuse
Date: December 2022
Contact: Paul Lawrence <paullawrence@google.com>
Description:
bpf_prog_type_fuse defines the program type of bpf programs that
may be passed to fuse-bpf. For upstream bpf program types, this
is a constant defined in a contiguous array of constants.
bpf_prog_type_fuse is appended to the end of the list, so it may
change and therefore its value must be read from this file.
Contents is ASCII decimal representation of bpf_prog_type_fuse