Programmatically retrieving the path to memory-placed tmpfs

Asked Feb 28 '18 at 08:07

Active Feb 28 '18 at 08:07

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I'm writing an application for Linux-based systems that makes intense use of temporary files for IPC purposes (locks, pipes, ...) and I would like to know if there is any canonical way to get a path to the temporary file system residing in RAM memory (such as /run). So far my solution is to default to /run unless a particular environment variable is set containing the path to that location, but I wonder whether there exists any API that could be used for getting such information. Otherwise, what is your most common approach?

Thank you.

asked Feb 28 '18 at 08:07

Claudi

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Off the top of my head a kludge could be using `shm_open` to obtain a file desciptor, then obtain the path using `fcntl(fd, F_GETPATH, filePath);`. Interesting question, +1 :) – Geoffrey Feb 28 '18 at 09:04
And interesting answer, @Geoffrey! – Claudi Feb 28 '18 at 09:17
@Geoffrey posix shared memory files are located in /dev/shm – kjohri Feb 28 '18 at 10:07
@kjohri correct, which is a tmpfs, I did state it was a kludge :) – Geoffrey Feb 28 '18 at 10:08

Programmatically retrieving the path to memory-placed tmpfs

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