[Mellanox] Incorrect permission of /tmp in syncd container

[bingwang-ms]

Description

The permission of /tmp path in syncd container is incorrect. The expected permission should be 777, but it's 755.

admin@str-msn2700-22:~$ docker exec -it syncd bash
root@str-msn2700-22:/# ls -al /
total 1944
...
drwxr-xr-x   2 root root 4096 Aug  4 04:07 tmp

It's because the /tmp path is mounted from /tmp/nv-syncd-shared from host, and the /tmp/nv-syncd-shared is created by nv-syncd-shared.service sonic-buildimage/platform/mellanox/nv-syncd-shared/nv-syncd-shared.service at master · sonic-net/sonic-buildimage (github.com)

The fix is to create the path and set the permission to 777 in syncd-shared.service.

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[bingwang-ms]

The syncd-shared.service was introduced in PR #14547. So the issue should be in 202305 branch and above.

[bingwang-ms]

@volodymyrsamotiy Can you please help assign this issue?