/* SPDX-License-Identifier: GPL-2.0-or-later */ /* We do not need ifndef _XXX_H guard: https://github.com/rootless-containers/slirp4netns/pull/238#discussion_r530214521 */ #ifndef BLOCK #error "Included in an unexpected way?" #endif /* NOTE: - Run `sudo systemd-analyze syscall-filter` to show list of syscall groups. - Ideally we should also block open() and openat(), but these calls are required for opening resolv.conf */ /* group: @default */ BLOCK(execve); /* group: @debug */ BLOCK(lookup_dcookie); BLOCK(pidfd_getfd); BLOCK(ptrace); /* group: @ipc */ BLOCK(process_vm_readv); BLOCK(process_vm_writev); /* group: @module*/ BLOCK(delete_module); BLOCK(finit_module); BLOCK(init_module); /* group: @mount */ BLOCK(chroot); BLOCK(fsconfig); BLOCK(fsmount); BLOCK(fsopen); BLOCK(fspick); BLOCK(mount); BLOCK(move_mount); BLOCK(open_tree); BLOCK(pivot_root); BLOCK(umount); BLOCK(umount2); /* group: @privileged */ BLOCK(open_by_handle_at); /* group: @process */ BLOCK(execveat); BLOCK(pidfd_open); BLOCK(pidfd_send_signal); BLOCK(prctl); BLOCK(setns); BLOCK(unshare); /* group: @reboot */ BLOCK(kexec_file_load); BLOCK(kexec_load); BLOCK(reboot); /* group: @system-service */ BLOCK(name_to_handle_at);