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Bug 2049134

Summary: fix /badfuncs warning in rhel-9 gating about inet_aton
Product: Red Hat Enterprise Linux 9 Reporter: Thomas Haller <thaller>
Component: NetworkManagerAssignee: Thomas Haller <thaller>
Status: CLOSED CURRENTRELEASE QA Contact: Desktop QE <desktop-qa-list>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 9.0CC: bgalvani, ferferna, lrintel, rkhan, sfaye, sukulkar, till, vbenes
Target Milestone: rcKeywords: Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: NetworkManager-1.43.8-1.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2023-05-18 08:21:32 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Thomas Haller 2022-02-01 15:31:15 UTC 
Gating, complains about usage of two deprecated C functions (inet_makeaddr, inet_netof).

See:

 https://dashboard.osci.redhat.com/?filters=eyJ0eXBlIjoiYnJldy1idWlsZCIsImFjdGl2ZSI6WyJOZXR3b3JrTWFuYWdlciJdLCJvcHRpb25zIjp7InNraXBTY3JhdGNoIjpmYWxzZX19#/search

   osci.brew-build.rpminspect.static-analysis about /badfuncs:



>>>>


1) /usr/sbin/NetworkManager may use forbidden functions on aarch64

Result: VERIFY
Waiver Authorization: Anyone

Details:
Forbidden function symbols found:
	inet_makeaddr
	inet_netof


Suggested Remedy:
Forbidden symbols were found in an ELF file in the package.  The configuration settings for rpminspect indicate the named symbols are forbidden in packages.  If this is deliberate, you may want to disable the badfuncs inspection.  If it is not deliberate, check the man pages for the named symbols to see what API functions have replaced the forbidden symbols.  Usually a function is marked as deprecated but still provided in order to allow for backwards compatibility.  Whenever possible the deprecated functions should not be used.



>>>>



Note that inet_aton we *WANT* to use. So we disabled that warning here:
  https://gitlab.com/redhat/centos-stream/rpms/NetworkManager/-/commit/47c72e1b3699b8dcd52f2df1642076921d47c632
  https://gitlab.com/redhat/centos-stream/rpms/NetworkManager/-/commit/1254c71598d6dae140dff96874121d9062511489

for inet_makeaddr and inet_netof, we don't want to use it. We should instead fix the code to not use it.


the problem is, that the functions are used in our systemd fork, so the change needs to be upstreamed to systemd.
Comment 1 Thomas Haller 2022-02-01 15:36:20 UTC 
see also https://dashboard.osci.redhat.com/#/artifact/brew-build/aid/42665793?focus=id:d3a230fee3afdbac4faf56ddfb24d71a729bd66742fdb371ae8dda00a83c5fc9
Comment 3 Thomas Haller 2022-04-21 20:21:00 UTC 
hm. Regrading the symbols inet_makeaddr() and inet_netof(), this fixed itself.

First, systemd dropped usage of the symbols in [1], which we imported to NetworkManager as [2].
Then the symbols were gone.

[1] https://github.com/systemd/systemd/commit/7b868543072bb9073174a4ae46032fdb6eb24c92
[2] https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/commit/7b3466fc4cfedd85992fa24953a08f9f07d6d28f

Shortly after, we dropped systemd's n-dhcp4 client altogether (bug 2073067), where these source files were gone.

---

However, we still use (intentionally) inet_aton().

Oddly enough, I just see a warning about that usage ([1]), despite ignoring the symbol in rpminspect.yaml.

I leave the rhbz open to investigate that...
Comment 4 Thomas Haller 2022-04-21 20:22:32 UTC 
(In reply to Thomas Haller from comment #3)

> Oddly enough, I just see a warning about that usage ([1]), despite ignoring
> the symbol in rpminspect.yaml.

see "osci.brew-build.rpminspect.static-analysis" test at [1]

[1] https://dashboard.osci.redhat.com/#/artifact/brew-build/aid/44755341
Comment 5 Thomas Haller 2022-11-21 10:28:12 UTC 
repurpose the bug. The badfuncs is no inet_aton. See also comment 3.
Comment 6 Thomas Haller 2023-05-09 06:47:42 UTC 
this should be fixed with https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/commit/7e03f9c1ba417c429628429a98ea53e3becaa242 by not (directly) using inet_aton() anymore.

Previously, the gating test also complained about other undesirable ABI. We stopped using that ABI a while ago (comment 3).


Interestingly, we had a rpminspect.yaml file, which was supposed to suppress the warning. Which it did not(?? why?).
Anyway, that rpminspect.yaml override (which wasn't working for some reason) is already dropped from c9s branch:
https://gitlab.com/redhat/centos-stream/rpms/NetworkManager/-/commit/1aa10acfaf38c80dd338fa5d45fae24a423edc86



So this should be fixed. When a new badfuncs warning shows up, please report a new issue.
Comment 7 Beniamino Galvani 2023-05-18 08:21:32 UTC 
The warning is not visible in the latest 9.3 build.