Linux: mount exFAT volumes with the in-kernel driver#1822
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Same idea as the existing NTFS kernel-driver option: mount.exfat on most distros is a symlink to the FUSE exfat-fuse helper, even though the kernel has had a native exfat driver for years. Add --filesystem=kernel-exfat, -m kernelexfat, and a preferences checkbox to mount with -i and skip the helper.
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Problem
On Linux,
mount.exfatis usually a symlink tomount.exfat-fuse. The kernel has had a native exfat driver since 5.7, but VeraCrypt (like a plainmount -t exfat) always ends up on the FUSE path. It's pretty slow for anything beyond small volumes.This mirrors the existing NTFS kernel-driver option, which solves the same problem for NTFS. exFAT currently has no equivalent.
Change
Adds
MountExfatWithKernelDriver, mirroringMountNtfsWithKernelDriver:--filesystem=kernel-exfat/-m kernelexfaton the CLIblkid -p, and if exFAT is detected and no filesystem type was given, mounts with-isomount(8)skips the FUSE helperexFAT has no similar
ntfs/ntfs3split, so there's only one kernel driver name to select.Opt-in, off by default. Default mount behavior is unchanged.
Testing
Built and tested on openSUSE Tumbleweed (kernel 7.1, wxWidgets 3.2.8):
--filesystem=kernel-exfatmounts natively (mountshowstype exfat, notfuseblk)-m kernelexfatautodetect does the samekernel-exfatas a create-time type, same askernel-ntfs