| // +build linux |
| |
| package cgroups |
| |
| import ( |
| "bytes" |
| "fmt" |
| "reflect" |
| "strings" |
| "testing" |
| ) |
| |
| const fedoraMountinfo = `15 35 0:3 / /proc rw,nosuid,nodev,noexec,relatime shared:5 - proc proc rw |
| 16 35 0:14 / /sys rw,nosuid,nodev,noexec,relatime shared:6 - sysfs sysfs rw,seclabel |
| 17 35 0:5 / /dev rw,nosuid shared:2 - devtmpfs devtmpfs rw,seclabel,size=8056484k,nr_inodes=2014121,mode=755 |
| 18 16 0:15 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:7 - securityfs securityfs rw |
| 19 16 0:13 / /sys/fs/selinux rw,relatime shared:8 - selinuxfs selinuxfs rw |
| 20 17 0:16 / /dev/shm rw,nosuid,nodev shared:3 - tmpfs tmpfs rw,seclabel |
| 21 17 0:10 / /dev/pts rw,nosuid,noexec,relatime shared:4 - devpts devpts rw,seclabel,gid=5,mode=620,ptmxmode=000 |
| 22 35 0:17 / /run rw,nosuid,nodev shared:21 - tmpfs tmpfs rw,seclabel,mode=755 |
| 23 16 0:18 / /sys/fs/cgroup rw,nosuid,nodev,noexec shared:9 - tmpfs tmpfs rw,seclabel,mode=755 |
| 24 23 0:19 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:10 - cgroup cgroup rw,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd |
| 25 16 0:20 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:20 - pstore pstore rw |
| 26 23 0:21 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:11 - cgroup cgroup rw,cpuset,clone_children |
| 27 23 0:22 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:12 - cgroup cgroup rw,cpuacct,cpu,clone_children |
| 28 23 0:23 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,memory,clone_children |
| 29 23 0:24 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,devices,clone_children |
| 30 23 0:25 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,freezer,clone_children |
| 31 23 0:26 / /sys/fs/cgroup/net_cls rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,net_cls,clone_children |
| 32 23 0:27 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,blkio,clone_children |
| 33 23 0:28 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,perf_event,clone_children |
| 34 23 0:29 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,hugetlb,clone_children |
| 35 1 253:2 / / rw,relatime shared:1 - ext4 /dev/mapper/ssd-root--f20 rw,seclabel,data=ordered |
| 36 15 0:30 / /proc/sys/fs/binfmt_misc rw,relatime shared:22 - autofs systemd-1 rw,fd=38,pgrp=1,timeout=300,minproto=5,maxproto=5,direct |
| 37 17 0:12 / /dev/mqueue rw,relatime shared:23 - mqueue mqueue rw,seclabel |
| 38 35 0:31 / /tmp rw shared:24 - tmpfs tmpfs rw,seclabel |
| 39 17 0:32 / /dev/hugepages rw,relatime shared:25 - hugetlbfs hugetlbfs rw,seclabel |
| 40 16 0:7 / /sys/kernel/debug rw,relatime shared:26 - debugfs debugfs rw |
| 41 16 0:33 / /sys/kernel/config rw,relatime shared:27 - configfs configfs rw |
| 42 35 0:34 / /var/lib/nfs/rpc_pipefs rw,relatime shared:28 - rpc_pipefs sunrpc rw |
| 43 15 0:35 / /proc/fs/nfsd rw,relatime shared:29 - nfsd sunrpc rw |
| 45 35 8:17 / /boot rw,relatime shared:30 - ext4 /dev/sdb1 rw,seclabel,data=ordered |
| 46 35 253:4 / /home rw,relatime shared:31 - ext4 /dev/mapper/ssd-home rw,seclabel,data=ordered |
| 47 35 253:5 / /var/lib/libvirt/images rw,noatime,nodiratime shared:32 - ext4 /dev/mapper/ssd-virt rw,seclabel,discard,data=ordered |
| 48 35 253:12 / /mnt/old rw,relatime shared:33 - ext4 /dev/mapper/HelpDeskRHEL6-FedoraRoot rw,seclabel,data=ordered |
| 121 22 0:36 / /run/user/1000/gvfs rw,nosuid,nodev,relatime shared:104 - fuse.gvfsd-fuse gvfsd-fuse rw,user_id=1000,group_id=1000 |
| 124 16 0:37 / /sys/fs/fuse/connections rw,relatime shared:107 - fusectl fusectl rw |
| 165 38 253:3 / /tmp/mnt rw,relatime shared:147 - ext4 /dev/mapper/ssd-root rw,seclabel,data=ordered |
| 167 35 253:15 / /var/lib/docker/devicemapper/mnt/aae4076022f0e2b80a2afbf8fc6df450c52080191fcef7fb679a73e6f073e5c2 rw,relatime shared:149 - ext4 /dev/mapper/docker-253:2-425882-aae4076022f0e2b80a2afbf8fc6df450c52080191fcef7fb679a73e6f073e5c2 rw,seclabel,discard,stripe=16,data=ordered |
| 171 35 253:16 / /var/lib/docker/devicemapper/mnt/c71be651f114db95180e472f7871b74fa597ee70a58ccc35cb87139ddea15373 rw,relatime shared:153 - ext4 /dev/mapper/docker-253:2-425882-c71be651f114db95180e472f7871b74fa597ee70a58ccc35cb87139ddea15373 rw,seclabel,discard,stripe=16,data=ordered |
| 175 35 253:17 / /var/lib/docker/devicemapper/mnt/1bac6ab72862d2d5626560df6197cf12036b82e258c53d981fa29adce6f06c3c rw,relatime shared:157 - ext4 /dev/mapper/docker-253:2-425882-1bac6ab72862d2d5626560df6197cf12036b82e258c53d981fa29adce6f06c3c rw,seclabel,discard,stripe=16,data=ordered |
| 179 35 253:18 / /var/lib/docker/devicemapper/mnt/d710a357d77158e80d5b2c55710ae07c94e76d34d21ee7bae65ce5418f739b09 rw,relatime shared:161 - ext4 /dev/mapper/docker-253:2-425882-d710a357d77158e80d5b2c55710ae07c94e76d34d21ee7bae65ce5418f739b09 rw,seclabel,discard,stripe=16,data=ordered |
| 183 35 253:19 / /var/lib/docker/devicemapper/mnt/6479f52366114d5f518db6837254baab48fab39f2ac38d5099250e9a6ceae6c7 rw,relatime shared:165 - ext4 /dev/mapper/docker-253:2-425882-6479f52366114d5f518db6837254baab48fab39f2ac38d5099250e9a6ceae6c7 rw,seclabel,discard,stripe=16,data=ordered |
| 187 35 253:20 / /var/lib/docker/devicemapper/mnt/8d9df91c4cca5aef49eeb2725292aab324646f723a7feab56be34c2ad08268e1 rw,relatime shared:169 - ext4 /dev/mapper/docker-253:2-425882-8d9df91c4cca5aef49eeb2725292aab324646f723a7feab56be34c2ad08268e1 rw,seclabel,discard,stripe=16,data=ordered |
| 191 35 253:21 / /var/lib/docker/devicemapper/mnt/c8240b768603d32e920d365dc9d1dc2a6af46cd23e7ae819947f969e1b4ec661 rw,relatime shared:173 - ext4 /dev/mapper/docker-253:2-425882-c8240b768603d32e920d365dc9d1dc2a6af46cd23e7ae819947f969e1b4ec661 rw,seclabel,discard,stripe=16,data=ordered |
| 195 35 253:22 / /var/lib/docker/devicemapper/mnt/2eb3a01278380bbf3ed12d86ac629eaa70a4351301ee307a5cabe7b5f3b1615f rw,relatime shared:177 - ext4 /dev/mapper/docker-253:2-425882-2eb3a01278380bbf3ed12d86ac629eaa70a4351301ee307a5cabe7b5f3b1615f rw,seclabel,discard,stripe=16,data=ordered |
| 199 35 253:23 / /var/lib/docker/devicemapper/mnt/37a17fb7c9d9b80821235d5f2662879bd3483915f245f9b49cdaa0e38779b70b rw,relatime shared:181 - ext4 /dev/mapper/docker-253:2-425882-37a17fb7c9d9b80821235d5f2662879bd3483915f245f9b49cdaa0e38779b70b rw,seclabel,discard,stripe=16,data=ordered |
| 203 35 253:24 / /var/lib/docker/devicemapper/mnt/aea459ae930bf1de913e2f29428fd80ee678a1e962d4080019d9f9774331ee2b rw,relatime shared:185 - ext4 /dev/mapper/docker-253:2-425882-aea459ae930bf1de913e2f29428fd80ee678a1e962d4080019d9f9774331ee2b rw,seclabel,discard,stripe=16,data=ordered |
| 207 35 253:25 / /var/lib/docker/devicemapper/mnt/928ead0bc06c454bd9f269e8585aeae0a6bd697f46dc8754c2a91309bc810882 rw,relatime shared:189 - ext4 /dev/mapper/docker-253:2-425882-928ead0bc06c454bd9f269e8585aeae0a6bd697f46dc8754c2a91309bc810882 rw,seclabel,discard,stripe=16,data=ordered |
| 211 35 253:26 / /var/lib/docker/devicemapper/mnt/0f284d18481d671644706e7a7244cbcf63d590d634cc882cb8721821929d0420 rw,relatime shared:193 - ext4 /dev/mapper/docker-253:2-425882-0f284d18481d671644706e7a7244cbcf63d590d634cc882cb8721821929d0420 rw,seclabel,discard,stripe=16,data=ordered |
| 215 35 253:27 / /var/lib/docker/devicemapper/mnt/d9dd16722ab34c38db2733e23f69e8f4803ce59658250dd63e98adff95d04919 rw,relatime shared:197 - ext4 /dev/mapper/docker-253:2-425882-d9dd16722ab34c38db2733e23f69e8f4803ce59658250dd63e98adff95d04919 rw,seclabel,discard,stripe=16,data=ordered |
| 219 35 253:28 / /var/lib/docker/devicemapper/mnt/bc4500479f18c2c08c21ad5282e5f826a016a386177d9874c2764751c031d634 rw,relatime shared:201 - ext4 /dev/mapper/docker-253:2-425882-bc4500479f18c2c08c21ad5282e5f826a016a386177d9874c2764751c031d634 rw,seclabel,discard,stripe=16,data=ordered |
| 223 35 253:29 / /var/lib/docker/devicemapper/mnt/7770c8b24eb3d5cc159a065910076938910d307ab2f5d94e1dc3b24c06ee2c8a rw,relatime shared:205 - ext4 /dev/mapper/docker-253:2-425882-7770c8b24eb3d5cc159a065910076938910d307ab2f5d94e1dc3b24c06ee2c8a rw,seclabel,discard,stripe=16,data=ordered |
| 227 35 253:30 / /var/lib/docker/devicemapper/mnt/c280cd3d0bf0aa36b478b292279671624cceafc1a67eaa920fa1082601297adf rw,relatime shared:209 - ext4 /dev/mapper/docker-253:2-425882-c280cd3d0bf0aa36b478b292279671624cceafc1a67eaa920fa1082601297adf rw,seclabel,discard,stripe=16,data=ordered |
| 231 35 253:31 / /var/lib/docker/devicemapper/mnt/8b59a7d9340279f09fea67fd6ad89ddef711e9e7050eb647984f8b5ef006335f rw,relatime shared:213 - ext4 /dev/mapper/docker-253:2-425882-8b59a7d9340279f09fea67fd6ad89ddef711e9e7050eb647984f8b5ef006335f rw,seclabel,discard,stripe=16,data=ordered |
| 235 35 253:32 / /var/lib/docker/devicemapper/mnt/1a28059f29eda821578b1bb27a60cc71f76f846a551abefabce6efd0146dce9f rw,relatime shared:217 - ext4 /dev/mapper/docker-253:2-425882-1a28059f29eda821578b1bb27a60cc71f76f846a551abefabce6efd0146dce9f rw,seclabel,discard,stripe=16,data=ordered |
| 239 35 253:33 / /var/lib/docker/devicemapper/mnt/e9aa60c60128cad1 rw,relatime shared:221 - ext4 /dev/mapper/docker-253:2-425882-e9aa60c60128cad1 rw,seclabel,discard,stripe=16,data=ordered |
| 243 35 253:34 / /var/lib/docker/devicemapper/mnt/5fec11304b6f4713fea7b6ccdcc1adc0a1966187f590fe25a8227428a8df275d-init rw,relatime shared:225 - ext4 /dev/mapper/docker-253:2-425882-5fec11304b6f4713fea7b6ccdcc1adc0a1966187f590fe25a8227428a8df275d-init rw,seclabel,discard,stripe=16,data=ordered |
| 247 35 253:35 / /var/lib/docker/devicemapper/mnt/5fec11304b6f4713fea7b6ccdcc1adc0a1966187f590fe25a8227428a8df275d rw,relatime shared:229 - ext4 /dev/mapper/docker-253:2-425882-5fec11304b6f4713fea7b6ccdcc1adc0a1966187f590fe25a8227428a8df275d rw,seclabel,discard,stripe=16,data=ordered |
| 31 21 0:23 / /DATA/foo_bla_bla rw,relatime - cifs //foo/BLA\040BLA\040BLA/ rw,sec=ntlm,cache=loose,unc=\\foo\BLA BLA BLA,username=my_login,domain=mydomain.com,uid=12345678,forceuid,gid=12345678,forcegid,addr=10.1.30.10,file_mode=0755,dir_mode=0755,nounix,rsize=61440,wsize=65536,actimeo=1` |
| |
| const systemdMountinfo = `115 83 0:32 / / rw,relatime - aufs none rw,si=c0bd3d3,dio,dirperm1 |
| 116 115 0:35 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw |
| 117 115 0:36 / /dev rw,nosuid - tmpfs tmpfs rw,mode=755 |
| 118 117 0:37 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666 |
| 119 115 0:38 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw |
| 120 119 0:39 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime - tmpfs tmpfs rw,mode=755 |
| 121 120 0:19 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd |
| 122 120 0:20 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,devices |
| 123 120 0:21 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,freezer |
| 124 120 0:22 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,memory |
| 125 120 0:23 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,net_cls,net_prio |
| 126 120 0:24 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,blkio |
| 127 120 0:25 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpuset,clone_children |
| 128 120 0:26 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,cpu,cpuacct |
| 129 120 0:27 /system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime - cgroup cgroup rw,perf_event,release_agent=/run/cgmanager/agents/cgm-release-agent.perf_event |
| 130 115 43:0 /var/lib/docker/volumes/a44a712176377f57c094397330ee04387284c478364eb25f4c3d25f775f25c26/_data /var/lib/docker rw,relatime - ext4 /dev/nbd0 rw,data=ordered |
| 131 115 43:0 /var/lib/docker/containers/dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e/resolv.conf /etc/resolv.conf rw,relatime - ext4 /dev/nbd0 rw,data=ordered |
| 132 115 43:0 /var/lib/docker/containers/dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e/hostname /etc/hostname rw,relatime - ext4 /dev/nbd0 rw,data=ordered |
| 133 115 43:0 /var/lib/docker/containers/dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e/hosts /etc/hosts rw,relatime - ext4 /dev/nbd0 rw,data=ordered |
| 134 117 0:33 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k |
| 135 117 0:13 / /dev/mqueue rw,nosuid,nodev,noexec,relatime - mqueue mqueue rw |
| 136 117 0:12 /1 /dev/console rw,nosuid,noexec,relatime - devpts none rw,gid=5,mode=620,ptmxmode=000 |
| 84 115 0:40 / /tmp rw,relatime - tmpfs none rw` |
| |
| const cgroup2Mountinfo = `18 64 0:18 / /sys rw,nosuid,nodev,noexec,relatime shared:6 - sysfs sysfs rw,seclabel |
| 19 64 0:4 / /proc rw,nosuid,nodev,noexec,relatime shared:5 - proc proc rw |
| 20 64 0:6 / /dev rw,nosuid shared:2 - devtmpfs devtmpfs rw,seclabel,size=8171204k,nr_inodes=2042801,mode=755 |
| 21 18 0:19 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:7 - securityfs securityfs rw |
| 22 20 0:20 / /dev/shm rw,nosuid,nodev shared:3 - tmpfs tmpfs rw,seclabel |
| 23 20 0:21 / /dev/pts rw,nosuid,noexec,relatime shared:4 - devpts devpts rw,seclabel,gid=5,mode=620,ptmxmode=000 |
| 24 64 0:22 / /run rw,nosuid,nodev shared:24 - tmpfs tmpfs rw,seclabel,mode=755 |
| 25 18 0:23 / /sys/fs/cgroup ro,nosuid,nodev,noexec shared:8 - tmpfs tmpfs ro,seclabel,mode=755 |
| 26 25 0:24 / /sys/fs/cgroup/systemd rw,nosuid,nodev,noexec,relatime shared:9 - cgroup2 cgroup rw |
| 27 18 0:25 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:20 - pstore pstore rw,seclabel |
| 28 18 0:26 / /sys/firmware/efi/efivars rw,nosuid,nodev,noexec,relatime shared:21 - efivarfs efivarfs rw |
| 29 25 0:27 / /sys/fs/cgroup/cpu,cpuacct rw,nosuid,nodev,noexec,relatime shared:10 - cgroup cgroup rw,cpu,cpuacct |
| 30 25 0:28 / /sys/fs/cgroup/memory rw,nosuid,nodev,noexec,relatime shared:11 - cgroup cgroup rw,memory |
| 31 25 0:29 / /sys/fs/cgroup/net_cls,net_prio rw,nosuid,nodev,noexec,relatime shared:12 - cgroup cgroup rw,net_cls,net_prio |
| 32 25 0:30 / /sys/fs/cgroup/blkio rw,nosuid,nodev,noexec,relatime shared:13 - cgroup cgroup rw,blkio |
| 33 25 0:31 / /sys/fs/cgroup/perf_event rw,nosuid,nodev,noexec,relatime shared:14 - cgroup cgroup rw,perf_event |
| 34 25 0:32 / /sys/fs/cgroup/hugetlb rw,nosuid,nodev,noexec,relatime shared:15 - cgroup cgroup rw,hugetlb |
| 35 25 0:33 / /sys/fs/cgroup/freezer rw,nosuid,nodev,noexec,relatime shared:16 - cgroup cgroup rw,freezer |
| 36 25 0:34 / /sys/fs/cgroup/cpuset rw,nosuid,nodev,noexec,relatime shared:17 - cgroup cgroup rw,cpuset |
| 37 25 0:35 / /sys/fs/cgroup/devices rw,nosuid,nodev,noexec,relatime shared:18 - cgroup cgroup rw,devices |
| 38 25 0:36 / /sys/fs/cgroup/pids rw,nosuid,nodev,noexec,relatime shared:19 - cgroup cgroup rw,pids |
| 61 18 0:37 / /sys/kernel/config rw,relatime shared:22 - configfs configfs rw |
| 64 0 253:0 / / rw,relatime shared:1 - ext4 /dev/mapper/fedora_dhcp--16--129-root rw,seclabel,data=ordered |
| 39 18 0:17 / /sys/fs/selinux rw,relatime shared:23 - selinuxfs selinuxfs rw |
| 40 20 0:16 / /dev/mqueue rw,relatime shared:25 - mqueue mqueue rw,seclabel |
| 41 20 0:39 / /dev/hugepages rw,relatime shared:26 - hugetlbfs hugetlbfs rw,seclabel |
| ` |
| |
| func TestGetCgroupMounts(t *testing.T) { |
| type testData struct { |
| mountInfo string |
| root string |
| subsystems map[string]bool |
| } |
| testTable := []testData{ |
| { |
| mountInfo: fedoraMountinfo, |
| root: "/", |
| subsystems: map[string]bool{ |
| "cpuset": true, |
| "cpu": true, |
| "cpuacct": true, |
| "memory": true, |
| "devices": true, |
| "freezer": true, |
| "net_cls": true, |
| "blkio": true, |
| "perf_event": true, |
| "hugetlb": true, |
| }, |
| }, |
| { |
| mountInfo: systemdMountinfo, |
| root: "/system.slice/docker-dc4eaa1a34ec4d593bc0125d31eea823a1d76ae483aeb1409cca80304e34da2e.scope", |
| subsystems: map[string]bool{ |
| "cpuset": true, |
| "cpu": true, |
| "cpuacct": true, |
| "memory": true, |
| "devices": true, |
| "freezer": true, |
| "net_cls": true, |
| "blkio": true, |
| "perf_event": true, |
| }, |
| }, |
| } |
| for _, td := range testTable { |
| mi := bytes.NewBufferString(td.mountInfo) |
| cgMounts, err := getCgroupMountsHelper(td.subsystems, mi, false) |
| if err != nil { |
| t.Fatal(err) |
| } |
| cgMap := make(map[string]Mount) |
| for _, m := range cgMounts { |
| for _, ss := range m.Subsystems { |
| cgMap[ss] = m |
| } |
| } |
| for ss := range td.subsystems { |
| m, ok := cgMap[ss] |
| if !ok { |
| t.Fatalf("%s not found", ss) |
| } |
| if m.Root != td.root { |
| t.Fatalf("unexpected root for %s: %s", ss, m.Root) |
| } |
| if !strings.HasPrefix(m.Mountpoint, "/sys/fs/cgroup/") && !strings.Contains(m.Mountpoint, ss) { |
| t.Fatalf("unexpected mountpoint for %s: %s", ss, m.Mountpoint) |
| } |
| var ssFound bool |
| for _, mss := range m.Subsystems { |
| if mss == ss { |
| ssFound = true |
| break |
| } |
| } |
| if !ssFound { |
| t.Fatalf("subsystem %s not found in Subsystems field %v", ss, m.Subsystems) |
| } |
| } |
| } |
| } |
| |
| func BenchmarkGetCgroupMounts(b *testing.B) { |
| subsystems := map[string]bool{ |
| "cpuset": true, |
| "cpu": true, |
| "cpuacct": true, |
| "memory": true, |
| "devices": true, |
| "freezer": true, |
| "net_cls": true, |
| "blkio": true, |
| "perf_event": true, |
| "hugetlb": true, |
| } |
| b.ResetTimer() |
| for i := 0; i < b.N; i++ { |
| b.StopTimer() |
| mi := bytes.NewBufferString(fedoraMountinfo) |
| b.StartTimer() |
| if _, err := getCgroupMountsHelper(subsystems, mi, false); err != nil { |
| b.Fatal(err) |
| } |
| } |
| } |
| |
| func TestParseCgroupString(t *testing.T) { |
| testCases := []struct { |
| input string |
| expectedError error |
| expectedOutput map[string]string |
| }{ |
| { |
| // Taken from a CoreOS instance running systemd 225 with CPU/Mem |
| // accounting enabled in systemd |
| input: `9:blkio:/ |
| 8:freezer:/ |
| 7:perf_event:/ |
| 6:devices:/system.slice/system-sshd.slice |
| 5:cpuset:/ |
| 4:cpu,cpuacct:/system.slice/system-sshd.slice/sshd@126-10.240.0.15:22-xxx.yyy.zzz.aaa:33678.service |
| 3:net_cls,net_prio:/ |
| 2:memory:/system.slice/system-sshd.slice/sshd@126-10.240.0.15:22-xxx.yyy.zzz.aaa:33678.service |
| 1:name=systemd:/system.slice/system-sshd.slice/sshd@126-10.240.0.15:22-xxx.yyy.zzz.aaa:33678.service`, |
| expectedOutput: map[string]string{ |
| "name=systemd": "/system.slice/system-sshd.slice/sshd@126-10.240.0.15:22-xxx.yyy.zzz.aaa:33678.service", |
| "blkio": "/", |
| "freezer": "/", |
| "perf_event": "/", |
| "devices": "/system.slice/system-sshd.slice", |
| "cpuset": "/", |
| "cpu": "/system.slice/system-sshd.slice/sshd@126-10.240.0.15:22-xxx.yyy.zzz.aaa:33678.service", |
| "cpuacct": "/system.slice/system-sshd.slice/sshd@126-10.240.0.15:22-xxx.yyy.zzz.aaa:33678.service", |
| "net_cls": "/", |
| "net_prio": "/", |
| "memory": "/system.slice/system-sshd.slice/sshd@126-10.240.0.15:22-xxx.yyy.zzz.aaa:33678.service", |
| }, |
| }, |
| { |
| input: `malformed input`, |
| expectedError: fmt.Errorf(`invalid cgroup entry: must contain at least two colons: malformed input`), |
| }, |
| } |
| |
| for ndx, testCase := range testCases { |
| out, err := parseCgroupFromReader(strings.NewReader(testCase.input)) |
| if err != nil { |
| if testCase.expectedError == nil || testCase.expectedError.Error() != err.Error() { |
| t.Errorf("%v: expected error %v, got error %v", ndx, testCase.expectedError, err) |
| } |
| } else { |
| if !reflect.DeepEqual(testCase.expectedOutput, out) { |
| t.Errorf("%v: expected output %v, got error %v", ndx, testCase.expectedOutput, out) |
| } |
| } |
| } |
| |
| } |
| |
| func TestIgnoreCgroup2Mount(t *testing.T) { |
| subsystems := map[string]bool{ |
| "cpuset": true, |
| "cpu": true, |
| "cpuacct": true, |
| "memory": true, |
| "devices": true, |
| "freezer": true, |
| "net_cls": true, |
| "blkio": true, |
| "perf_event": true, |
| "pids": true, |
| "name=systemd": true, |
| } |
| |
| mi := bytes.NewBufferString(cgroup2Mountinfo) |
| cgMounts, err := getCgroupMountsHelper(subsystems, mi, false) |
| if err != nil { |
| t.Fatal(err) |
| } |
| for _, m := range cgMounts { |
| if m.Mountpoint == "/sys/fs/cgroup/systemd" { |
| t.Errorf("parsed a cgroup2 mount at /sys/fs/cgroup/systemd instead of ignoring it") |
| } |
| } |
| } |
| |
| const fakeMountInfo = ` 18 24 0:17 / /sys rw,nosuid,nodev,noexec,relatime - sysfs sysfs rw |
| 100 99 1:31 / /foo/bar rw,relatime - fake fake rw,fake |
| 100 99 1:31 / /foo/bar/baz2 rw,relatime - fake fake rw,fake |
| 100 99 1:31 / /foo/bar/baz rw,relatime - fake fake rw,fake |
| 100 99 1:31 / /foo/bar/bazza rw,relatime - fake fake rw,fake |
| 100 99 1:31 / /foo/bar/baz3 rw,relatime - fake fake rw,fake |
| 100 99 1:31 / /foo rw,relatime - fake fake rw,fake |
| 100 99 1:31 / /unrelated rw,relatime - fake fake rw,fake |
| 100 99 1:31 / / rw,relatime - fake fake rw,fake |
| ` |
| |
| func TestGetClosestMountpointAncestor(t *testing.T) { |
| testCases := []struct { |
| input string |
| mountinfos string |
| output string |
| }{ |
| {input: "/foo/bar/baz/a/b/c", mountinfos: fakeMountInfo, output: "/foo/bar/baz"}, |
| {input: "/foo/bar/baz", mountinfos: fakeMountInfo, output: "/foo/bar/baz"}, |
| {input: "/foo/bar/bazza", mountinfos: fakeMountInfo, output: "/foo/bar/bazza"}, |
| {input: "/a/b/c/d", mountinfos: fakeMountInfo, output: "/"}, |
| } |
| |
| for _, c := range testCases { |
| mountpoint := GetClosestMountpointAncestor(c.input, c.mountinfos) |
| if mountpoint != c.output { |
| t.Errorf("expected %s, got %s", c.output, mountpoint) |
| } |
| } |
| } |
