fix(libscap): add defines in userspace_flags_helpers.h for alpine-musl/centos7 builds that don't have them

[LucaGuerra]

Signed-off-by: Luca Guerra luca@guerra.sh

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind bug

/kind cleanup

/kind design

/kind documentation

/kind failing-test

/kind feature

Any specific area of the project related to this PR?

Uncomment one (or more) /area <> lines:

/area build

/area driver-kmod

/area driver-ebpf

/area libscap

/area libsinsp

/area tests

/area proposals

What this PR does / why we need it:

This PR aims to fix the following build errors, with musl for alpine:

/build-static/release/falcosecurity-libs-repo/falcosecurity-libs-prefix/src/falcosecurity-libs/userspace/libscap/../../driver/ppm_flag_helpers.h:1279:14: error: 'LOCK_EX' was not declared in this scope
 1279 |  if (flags & LOCK_EX)
      |              ^~~~~~~

and similar

and with CentOS 7:

/build/release/falcosecurity-libs-repo/falcosecurity-libs-prefix/src/falcosecurity-libs/userspace/libscap/../../driver/ppm_flag_helpers.h:1369:7: error: 'QFMT_VFS_OLD' was not declared in this scope

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[poiana]

Hi @LucaGuerra. Thanks for your PR.

I'm waiting for a falcosecurity member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[jasondellaluce]

/ok-to-test

[FedeDP]

🙏

[FedeDP]

/test build-libs-bundled-deps

[FedeDP]

/approve

[poiana]

LGTM label has been added.

Git tree hash: 37fb6b49b44e3f9e26ab77a968f90b434a15b8e3

[Andreagit97]

Thank you @LucaGuerra!
/approve

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Andreagit97, FedeDP, LucaGuerra

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