I don't have any other FUSE filesystems setup to compare against, unfortunately. Just tried using those permissions on mount, no changes. I have been trying to access as the same user performing the mount.
This is a silly thought, but maybe it's the sshfs mount itself that's failing? It ties up standard input instead of returning like a regular mount, but shows in the mount list so I've assumed it was mounted thus far
Well this is pretty ridiculous, but I should've referred to my original question, which was authenticating sshfs with OpenPGP smartcard instead of a password.
I had started using -o SmartcardDevice=/dev/hidraw7 because this didn't bring up the password prompt
I'm not sure what changed, but I've tried not passing SmartcardDevice and it suddenly prompts for my smartcard at the shell
@Rob that's a good place to use strace to see which system call exactly is hanging. Try strace -o /tmp/strace.out -f ls whatever and then look in /tmp/strace.out for the last few lines; that will show you what hung.
@deostroll see line 86 of the same script, and also unix.stackexchange.com/q/282807/135943 (or the bash man page on parameter expansion, specifically the few lines at the top if you run LESS='+/When not performing' man bash).
@Tim A lot. There are so many areas you can learn about, each one of which is a specialty field in itself. Algorithms and their proofs and space/time complexity; networking and the many various protocols; the kernel and its system calls and data structures; various programming languages and their nuances; databases and types of indexes; filesystems and their design tradeoffs; hardware and drivers; consumer end hardware comparisons; Linux distros comparisons and quirks; init and systemd...
...text encodings and locale/translation issues; open source software for various needs; cryptography and cryptanalysis; machine learning and AI; color gamuts and color space conversions; maths such as number theory and graph theory; instruction set designs and CPU pipelines; configuration management; software design workflows and collaborative strategies....
@Wildcard I see. Similar situation here. Thanks for replying.
@Rob Sounds like it still might be worth asking on the site, in the self-answered style. In case other people run into the same issue. Also, perhaps a bug report to ssh?