Creating a temporary directory (/tmp)

QNX SDP8.0Building Embedded SystemsConfigurationDeveloper

You can use your buildfile to create a temporary directory in the RAM shared memory filesystem.

To create the /tmp directory in the RAM /dev/shmem filesystem, you can include the following instruction in your buildfile: 
[type=link] /tmp = /dev/shmem

This instruction sets /tmp as a symbolic link in the process manager's pathname table; this symbolic link points to the /dev/shmem directory.

Since the /dev/shmem directory is the location where shared memory objects are stored, this link effectively lets you create files in the RAM filesystem (see /dev/shmem RAM filesystem in the QNX OS User's Guide).

Note:
Place the line with the link attribute ([type=link]) outside the script file and the boot file. For example: 
[image=0x1400000]
[virtual=x86_64,kpi +compress] boot = {
    ...
}

[+script] startup-script = {
    ...
}

[type=link] /tmp=/dev/shmem
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