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Spotlight / Finder Search / Finder Tags not working on virtual file system Monterey/Ventura
I'm writing a virtual file system as my educational project (generic kernel extension). Currently, mostly everything is implemented, however, I'm having trouble using Finder search and tags. The results simply don't show up - despite I am having vnop_... calls to those files. The extended attributes are supported. Inodes are stable. Mmap is implemented. Vnop_ioctl returns KERN_SUCCESS (but no implementation). An important moment: Previously, the search didn't work at all. Researching the web has shown me, that Spotlight indexation and Finder search are tightly glued. So basically I was trying to enable support for spotlight, thinking that would be the source of the problem. I was receiving "Unknown indexing state". All those tricks with mdutil, launchd, manual and reindexation either were doing nothing or returning error. The problem was resolved FOR SONOMA by making by VFS appear as local one (adding flags for MNT_LOLCAL and MNT_DOVOLFS). This has changed the state from Unknown indexing state for spotlight to Indexing is disabled. No need to turn it on for me - I am interested only in search and tags, not the spotlight itself. Basically, whether spotlight recognises my driver as no-error, the Finder works correctly, even with indexation disabled. Whether on Monterey*, or Ventura, I get the same problem. However, neither system logs nor my driver show any kinds of errors. The spotlight simply returns error. Reindexation attempt via Security&Privacy returns "Unknown error occured". The metadata for Ventura and Monterey read attempt (mdls) returns "Unable to locate file", however returns a huge list for Sonoma. *Monterey and Ventura never have .Spotlight-V100 folder. No disable indexing files or other spotlight restrictions are present. No user space solutions seem to help. The kext is unsigned and running in an environment with SIP disabled and Security Mode reduced to Permissive. Maybe there some abstract rules for what is required on VFS side to be recognised okay'ish by Spotlight ? Or maybe something specific right for my case ? Any pointers and/or assistance would be greatly appreciated.
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Jun ’24