CODEWITHSUNDEEP
linuxfuse
nabin47
nabin47

Reputation: 35

How to get Logical Block Address(LBA) using FUSE file system?

I need to find the logical block address of files from a fuse based file system. Is there any function available that can find the logical block address of a file within a fuse filesystem?

Upvotes: 0

Views: 275

Answers (1)

Oren Kishon
Oren Kishon

Reputation: 767

In general, getting logical block info is done with the fiemap ioctl. See non fuse question about it: Logical block number to address (Linux filesystem)

A fuse filesystem can process this ioctl, as any other ioctl, using the libfuse ioctl file operation, if you choose to implement it. See libfuse ioctl example: https://libfuse.github.io/doxygen/example_2ioctl_8c.html

I found that there was an initiative to add a specialized fuse interface to give fiemap like info, but it seems to be incomplete: https://github.com/libfuse/libfuse/issues/72

Upvotes: 1

Related Questions