GitHub pull request #3630 of commit 695e12765d6c84ccda3614088ea3aaeba345ee44, no merge conflicts.sha1origin/pr/3630/mergeghprbActualCommit695e12765d6c84ccda3614088ea3aaeba345ee44ghprbActualCommitAuthorghprbActualCommitAuthorEmailghprbAuthorRepoGitUrlhttps://github.com/kinvolk/bcc.gitghprbTriggerAuthorDave MarchevskyghprbTriggerAuthorEmaildavemarchevsky@gmail.comghprbTriggerAuthorLogindavemarchevskyghprbTriggerAuthorLoginMention@davemarchevskyghprbPullId3630ghprbTargetBranchmasterghprbSourceBranchmauricio/handle-eint-libbpftoolsGIT_BRANCHmauricio/handle-eint-libbpftoolsghprbPullAuthorEmailmauriciovasquezbernal@gmail.comghprbPullAuthorLoginmauriciovasquezbernalghprbPullAuthorLoginMention@mauriciovasquezbernalghprbPullDescriptionGitHub pull request #3630 of commit 695e12765d6c84ccda3614088ea3aaeba345ee44, no merge conflicts.ghprbPullTitlelibbpf-tools: fix EINTR related issuesghprbPullLinkhttps://github.com/iovisor/bcc/pull/3630ghprbPullLongDescription1. Most of the tools that use perf_buffer__poll() were not handling the\r\ncase when it was interrupted by a signal, they were just ending.\r\nWe noticed this issue by running the tools inside a container, after\r\nsome seconds they will finish:\r\n\r\n```\r\n$ time /execsnoop\r\n...\r\nrunc 210198 939 0 /usr/sbin/runc --version\r\ndocker-init 210205 939 0 /usr/bin/docker-init --version\r\nError polling perf buffer: -4\r\n\r\nreal 0m48.913s\r\nuser 0m0.020s\r\nsys 0m0.033s\r\n```\r\n\r\nThis commit fixes that by checking if errno is EINTR after calling\r\nperf_buffer__poll().\r\n\r\n2. Many tools were returning non zero when ended by SIG_INT.\r\n\r\n```\r\n$ sudo ./execsnoop\r\nPCOMM PID PPID RET ARGS\r\nrunc 203967 939 0 /usr/sbin/runc --version\r\ndocker-init 203973 939 0 /usr/bin/docker-init --version\r\ncalico 203974 724 0 /opt/cni/bin/calico\r\nportmap 203985 724 0 /opt/cni/bin/portmap\r\nbandwidth 203990 724 0 /opt/cni/bin/bandwidth\r\n^C\r\n$ echo $?\r\n130\r\n```\r\n\r\n3. Some tools were missing the SIG_INT handler\r\n\r\nRelated issue https://github.com/kinvolk/inspektor-gadget/issues/230 \r\n\r\ncc @alban ghprbCommentBody[buildbot, test this please]ghprbGhRepositoryiovisor/bccghprbCredentialsId6d3daf13-69b8-48b1-9c8f-ec5353264113false<a title="libbpf-tools: fix EINTR related issues" href="https://github.com/iovisor/bcc/pull/3630">PR #3630</a>: libbpf-tools: fix EINTR rel...#116013819247460664bcc-pr #11601160false11609289SUCCESS1632508359574https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/1160/git1160https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc25/1160/1160https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc26/1160/1160https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc27/1160/1160https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=fc28/1160/1160https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1604/1160/1160https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1710/1160/1160https://buildbot.iovisor.org/jenkins/user/a.s.protopopov/my-views/view/all/job/bcc-pr/label=ubuntu1804/1160/