how do i change the shm_open path?

Question

i am currently developing an application on ubunto and calling shm_open, currently the default path is within /var/run/shm. however i need to change this to /tmp. simply try

Answer 1

You need to mount a tmpfs filesystem in /tmp for this:

mihai@keldon:~$ mount | grep shm
shm on /dev/shm type tmpfs (rw,nosuid,nodev,relatime)

Otherwise, it is not possible.