1603999 - libmozsandbox.so are not preloaded properly for the fork server

Status: RESOLVED FIXED

(Core :: IPC, defect)

Description

[Thinker Li [:sinker]]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:72.0) Gecko/20100101 Firefox/72.0

Steps to reproduce:

libmozsandbox.so implements wrappers of some syscalls, that is required in the content processes. It works only if it is preloaded in the content processes. However, with the fork server, content processes are forked from the fork server process without calling |exec()|. libmozsandbox.so is not preloaded in the fork server process, so it is not preloaded in the content processes too.

Comment 1

[Thinker Li [:sinker]]

Attachment: Bug 1603999 - Make mozsandbox being preloaded for the fork server. r=gsvelto

• make the fork server use the same sandbox level as content processes to make preloading work correctly.
• pass |canChroot| through env instead of hard coding.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/c84531d22cf6
Make mozsandbox being preloaded for the fork server. r=gsvelto

Comment 3

[Andrei Ciure[:aciure]]

https://hg.mozilla.org/mozilla-central/rev/c84531d22cf6