MapOpenFailed(2) when SYSTEM user open shared memory created by common user

[21pages]

error line

[21pages]

It's created by this crate, but need to set allow_raw=true, maybe not properly. If set, it can work

[einar-itm]

Not sure if this is related, but I got the same error because open_mapping assumes write permissions in the file-system when reusing an existing mapping. I am not sure if this counts as bug report or a feature request.

shared_memory/src/unix.rs

Line 160 in 344a5c4

OFlag::O_RDWR, //Open read write

Workaround: chmod u+w /dev/shmem/my_shmem