Bug 604646 – read /proc/mounts in mountinfo for greatest compatibility

• Status: RESOLVED FIXED
• Product: Gentoo Hosted Projects

[Description Benda Xu 2017-01-04 13:25:09 UTC]

on GNU/kFreeBSD, GNU/Hurd and Linux <2.4.19, /proc/self/mounts is not exposed.
/proc/mounts should be used for the best compatibility.

On modern Linux,  with the introduction of per-process mount namespaces in Linux 2.4.19, /proc/mounts becames a link to /proc/self/mounts. (man proc(5))
It does not hurt to read /proc/mounts under Linux.

Reproducible: Always

[Comment 1 Benda Xu 2017-01-04 16:30:06 UTC]

Created attachment 458750 [details, diff]
read-proc-mounts-in-mountinfo.patch

[Comment 2 William Hubbs 2017-01-06 17:25:22 UTC]

https://github.com/OpenRC/openrc/commit/b73941f

I didn't use your patch because I made the path a constant which can be
conditionally defined for different operating systems if necessary in
the future.

This is in 0.23.1 and will be in 0.24.

[Comment 3 Benda Xu 2017-01-07 03:29:59 UTC]

Looks good to me, thanks!