Gitiles - git.j3ss.co
git.j3ss.co / genuinetools / amicontained / 264649b33da4075094b6f71118e6fa966874f0c8
commit264649b33da4075094b6f71118e6fa966874f0c8[log] [tgz]
authorTobias Klauser <tobias.klauser@gmail.com>Thu Mar 07 12:56:41 2019 +0100
committerJess Frazelle <jessfraz@users.noreply.github.com>Thu Mar 07 11:56:41 2019 +0000
tree778125101039eca6e9f9d6bc7d08509f2241c52b
parentbb69b43f9d7aca8193dcb1f00d0ae8a559af560f [diff]
Test complete list of syscalls blocked by seccomp, filter unsupported syscalls (#17)

* Test complete list of syscalls as of Linux 4.20

Use the syscall numbers from golang.org/x/sys/unix, these get updated
regularly.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

* Only list supported syscalls

Some syscalls might not be supported on the kernel under which
amicontained is run.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

* Remove unused var to fix staticcheck error

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
1 file changed
tree: 778125101039eca6e9f9d6bc7d08509f2241c52b
  1. .gitignore
  2. .goosarch
  3. .travis.yml
  4. .traviskey
  5. Dockerfile
  6. LICENSE
  7. Makefile
  8. README.md
  9. VERSION.txt
  10. basic.mk
  11. go.mod
  12. go.sum
  13. main.go
  14. vendor/
  15. version/
README.md

amicontained

Travis CI GoDoc Github All Releases

Container introspection tool. Find out what container runtime is being used as well as features available.

Installation

Binaries

For installation instructions from binaries please visit the Releases Page.

Via Go

$ go get github.com/genuinetools/amicontained

Usage

$ amicontained -h
amicontained -  A container introspection tool.

Usage: amicontained <command>

Flags:

  -d  enable debug logging (default: false)

Commands:

  version  Show the version information.

Examples

docker

$ docker run --rm -it r.j3ss.co/amicontained
Container Runtime: docker
Has Namespaces:
        pid: true
        user: true
User Namespace Mappings:
	Container -> 0
	Host -> 886432
	Range -> 65536
AppArmor Profile: docker-default (enforce)
Capabilities:
	BOUNDING -> chown dac_override fowner fsetid kill setgid setuid setpcap net_bind_service net_raw sys_chroot mknod audit_write setfcap
Seccomp: filtering
Blocked Syscalls (57):
    MSGRCV PTRACE SYSLOG SETPGID SETSID USELIB USTAT SYSFS VHANGUP PIVOT_ROOT _SYSCTL ACCT SETTIMEOFDAY MOUNT UMOUNT2 SWAPON SWAPOFF REBOOT SETHOSTNAME SETDOMAINNAME IOPL IOPERM CREATE_MODULE INIT_MODULE DELETE_MODULE GET_KERNEL_SYMS QUERY_MODULE QUOTACTL NFSSERVCTL GETPMSG PUTPMSG AFS_SYSCALL TUXCALL SECURITY LOOKUP_DCOOKIE CLOCK_SETTIME VSERVER MBIND SET_MEMPOLICY GET_MEMPOLICY KEXEC_LOAD ADD_KEY REQUEST_KEY KEYCTL MIGRATE_PAGES UNSHARE MOVE_PAGES PERF_EVENT_OPEN FANOTIFY_INIT NAME_TO_HANDLE_AT OPEN_BY_HANDLE_AT CLOCK_ADJTIME SETNS PROCESS_VM_READV PROCESS_VM_WRITEV KCMP FINIT_MODULE

$ docker run --rm -it --pid host r.j3ss.co/amicontained
Container Runtime: docker
Has Namespaces:
        pid: false
        user: false
AppArmor Profile: docker-default (enforce)
Capabilities:
	BOUNDING -> chown dac_override fowner fsetid kill setgid setuid setpcap net_bind_service net_raw sys_chroot mknod audit_write setfcap
Seccomp: filtering
Blocked Syscalls (57):
    MSGRCV PTRACE SYSLOG SETPGID SETSID USELIB USTAT SYSFS VHANGUP PIVOT_ROOT _SYSCTL ACCT SETTIMEOFDAY MOUNT UMOUNT2 SWAPON SWAPOFF REBOOT SETHOSTNAME SETDOMAINNAME IOPL IOPERM CREATE_MODULE INIT_MODULE DELETE_MODULE GET_KERNEL_SYMS QUERY_MODULE QUOTACTL NFSSERVCTL GETPMSG PUTPMSG AFS_SYSCALL TUXCALL SECURITY LOOKUP_DCOOKIE CLOCK_SETTIME VSERVER MBIND SET_MEMPOLICY GET_MEMPOLICY KEXEC_LOAD ADD_KEY REQUEST_KEY KEYCTL MIGRATE_PAGES UNSHARE MOVE_PAGES PERF_EVENT_OPEN FANOTIFY_INIT NAME_TO_HANDLE_AT OPEN_BY_HANDLE_AT CLOCK_ADJTIME SETNS PROCESS_VM_READV PROCESS_VM_WRITEV KCMP FINIT_MODULE

$ docker run --rm -it --security-opt "apparmor=unconfined" r.j3ss.co/amicontained
Container Runtime: docker
Has Namespaces:
        pid: true
        user: false
AppArmor Profile: unconfined
Capabilities:
	BOUNDING -> chown dac_override fowner fsetid kill setgid setuid setpcap net_bind_service net_raw sys_chroot mknod audit_write setfcap
Seccomp: filtering
Blocked Syscalls (57):
    MSGRCV PTRACE SYSLOG SETPGID SETSID USELIB USTAT SYSFS VHANGUP PIVOT_ROOT _SYSCTL ACCT SETTIMEOFDAY MOUNT UMOUNT2 SWAPON SWAPOFF REBOOT SETHOSTNAME SETDOMAINNAME IOPL IOPERM CREATE_MODULE INIT_MODULE DELETE_MODULE GET_KERNEL_SYMS QUERY_MODULE QUOTACTL NFSSERVCTL GETPMSG PUTPMSG AFS_SYSCALL TUXCALL SECURITY LOOKUP_DCOOKIE CLOCK_SETTIME VSERVER MBIND SET_MEMPOLICY GET_MEMPOLICY KEXEC_LOAD ADD_KEY REQUEST_KEY KEYCTL MIGRATE_PAGES UNSHARE MOVE_PAGES PERF_EVENT_OPEN FANOTIFY_INIT NAME_TO_HANDLE_AT OPEN_BY_HANDLE_AT CLOCK_ADJTIME SETNS PROCESS_VM_READV PROCESS_VM_WRITEV KCMP FINIT_MODULE

lxc

$ lxc-attach -n xenial
root@xenial:/# amicontained
Container Runtime: lxc
Has Namespaces:
        pid: true
        user: true
User Namespace Mappings:
	Container -> 0	Host -> 100000	Range -> 65536
AppArmor Profile: none
Capabilities:
	BOUNDING -> chown dac_override dac_read_search fowner fsetid kill setgid setuid setpcap linux_immutable net_bind_service net_broadcast net_admin net_raw ipc_lock ipc_owner sys_chroot sys_ptrace sys_pacct sys_admin sys_boot sys_nice sys_resource sys_tty_config mknod lease audit_write audit_control setfcap syslog wake_alarm block_suspend audit_read

$ lxc-execute -n xenial -- /bin/amicontained
Container Runtime: lxc
Has Namespaces:
        pid: true
        user: true
User Namespace Mappings:
	Container -> 0	Host -> 100000	Range -> 65536
AppArmor Profile: none
Capabilities:
	BOUNDING -> chown dac_override dac_read_search fowner fsetid kill setgid setuid setpcap linux_immutable net_bind_service net_broadcast net_admin net_raw ipc_lock ipc_owner sys_chroot sys_ptrace sys_pacct sys_admin sys_boot sys_nice sys_resource sys_tty_config mknod lease audit_write audit_control setfcap syslog wake_alarm block_suspend audit_read

systemd-nspawn

$ sudo systemd-nspawn --machine amicontained --directory nspawn-amicontained /usr/bin/amicontained
Spawning container amicontained on /home/genuinetools/nspawn-amicontained.
Press ^] three times within 1s to kill container.
Timezone UTC does not exist in container, not updating container timezone.
Container Runtime: systemd-nspawn
Has Namespaces:
        pid: true
        user: false
AppArmor Profile: none
Capabilities:
	BOUNDING -> chown dac_override dac_read_search fowner fsetid kill setgid setuid setpcap linux_immutable net_bind_service net_broadcast net_raw ipc_owner sys_chroot sys_ptrace sys_admin sys_boot sys_nice sys_resource sys_tty_config mknod lease audit_write audit_control setfcap
Container amicontained exited successfully.

rkt

$ sudo rkt --insecure-options=image run docker://r.j3ss.co/amicontained
[  631.522121] amicontained[5]: Container Runtime: rkt
[  631.522471] amicontained[5]: Host PID Namespace: false
[  631.522617] amicontained[5]: AppArmor Profile: none
[  631.522768] amicontained[5]: User Namespace: false
[  631.522922] amicontained[5]: Capabilities:
[  631.523075] amicontained[5]: 	BOUNDING -> chown dac_override fowner fsetid kill setgid setuid setpcap net_bind_service net_raw sys_chroot mknod audit_write setfcap

$ sudo rkt --insecure-options=image run  --private-users=true --no-overlay docker://r.j3ss.co/amicontained
[  785.547050] amicontained[5]: Container Runtime: rkt
[  785.547360] amicontained[5]: Host PID Namespace: false
[  785.547567] amicontained[5]: AppArmor Profile: none
[  785.547717] amicontained[5]: User Namespace: true
[  785.547856] amicontained[5]: User Namespace Mappings:
[  785.548064] amicontained[5]: 	Container -> 0	Host -> 229834752	Range -> 65536
[  785.548335] amicontained[5]: Capabilities:
[  785.548537] amicontained[5]: 	BOUNDING -> chown dac_override fowner fsetid kill setgid setuid setpcap net_bind_service net_raw sys_chroot mknod audit_write setfcap

unshare

$ sudo unshare --user -r
root@coreos:/home/jessie/.go/src/github.com/genuinetools/amicontained# ./amicontained
Container Runtime: not-found
Has Namespaces:
        pid: false
        user: true
User Namespace Mappings:
	Container -> 0
	Host -> 0
	Range -> 1
AppArmor Profile: unconfined
Capabilities:
	BOUNDING -> chown dac_override dac_read_search fowner fsetid kill setgid setuid setpcap linux_immutable net_bind_service net_broadcast net_admin net_raw ipc_lock ipc_owner sys_module sys_rawio sys_chroot sys_ptrace sys_pacct sys_admin sys_boot sys_nice sys_resource sys_time sys_tty_config mknod lease audit_write audit_control setfcap mac_override mac_admin syslog wake_alarm block_suspend audit_read