does anyone know if there is any way at all on linux to get the uid that sent a message to a message queue
uid or pid, either is fine
bonifartius 𒂼𒄄
@velartrill what kind of message queue? i don't think that is functionality things like activeMQ etc. have
@bonifartius i mean kernel message queues, sysv or posix
@velartrill i did not know about them! you never stop learning :)
@bonifartius yeah everyone seems to prefer sockets these days, to the point that it's almost all you see used
@velartrill i can't think of a reason why _i_ would need the message queues, but that doesn't mean anything :D
buuuut https://github.com/torvalds/linux/blob/master/include/uapi/linux/msg.h
the pid seems to be included! at least from what i see with my limited kernel knowledge :)
@bonifartius msg_lrpid is unfortunately useless because there's no way to use it to reliably associate every message with a PID :(
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@velartrill aah, just read that it's the last pid who used the syscall
@bonifartius yeah, i don't know *why* they even record that, it's so useless. posix mqs do away with it entirely
