tree de02337da2f7c450ad3fa0de8f565a44458f901f
parent 4785c135498ee01e3799f4c88369560cec252c17
author Bram Bonné <brambonne@google.com> 1595236683 +0200
committer Elliott Hughes <enh@google.com> 1595518825 -0700

Resolve interface flags using SIOCGIFFLAGS ioctl

Normally, getifaddrs() gets its information about interface flags from
RTM_NEWLINK messages. With the ability for non-system apps to send
RTM_GETLINK messages going away, resolve these flags by performing a
SIOCGIFFLAGS ioctl call instead.

This fixes a bug where the flags were erroneously copied over from an
ifaddrmsg's ifa_flags.

Bug: 141455849
Bug: 161869825
Test: atest bionic-unit-tests-static
Test: Connect to wireless network.
Test: Call getifaddrs() from a non-system app targeting API R+, verify
that the interface flags are correct.

Change-Id: I552f3b9d21072f59ee6f0890f47cb1bdf3cfcf20