mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-24 13:05:17 +00:00
591 lines
11 KiB
Go
591 lines
11 KiB
Go
package seccomp
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import (
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"runtime"
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"github.com/opencontainers/runtime-spec/specs-go"
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rspec "github.com/opencontainers/runtime-spec/specs-go"
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)
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func arches() []rspec.Arch {
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native := runtime.GOARCH
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switch native {
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case "amd64":
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return []rspec.Arch{rspec.ArchX86_64, rspec.ArchX86, rspec.ArchX32}
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case "arm64":
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return []rspec.Arch{rspec.ArchARM, rspec.ArchAARCH64}
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case "mips64":
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return []rspec.Arch{rspec.ArchMIPS, rspec.ArchMIPS64, rspec.ArchMIPS64N32}
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case "mips64n32":
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return []rspec.Arch{rspec.ArchMIPS, rspec.ArchMIPS64, rspec.ArchMIPS64N32}
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case "mipsel64":
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return []rspec.Arch{rspec.ArchMIPSEL, rspec.ArchMIPSEL64, rspec.ArchMIPSEL64N32}
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case "mipsel64n32":
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return []rspec.Arch{rspec.ArchMIPSEL, rspec.ArchMIPSEL64, rspec.ArchMIPSEL64N32}
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case "s390x":
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return []rspec.Arch{rspec.ArchS390, rspec.ArchS390X}
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default:
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return []rspec.Arch{}
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}
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}
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// DefaultProfile defines the whitelist for the default seccomp profile.
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func DefaultProfile(rs *specs.Spec) *rspec.LinuxSeccomp {
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syscalls := []rspec.LinuxSyscall{
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{
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Names: []string{
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"accept",
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"accept4",
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"access",
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"alarm",
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"bind",
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"brk",
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"capget",
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"capset",
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"chdir",
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"chmod",
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"chown",
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"chown32",
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"clock_getres",
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"clock_gettime",
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"clock_nanosleep",
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"close",
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"connect",
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"copy_file_range",
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"creat",
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"dup",
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"dup2",
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"dup3",
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"epoll_create",
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"epoll_create1",
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"epoll_ctl",
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"epoll_ctl_old",
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"epoll_pwait",
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"epoll_wait",
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"epoll_wait_old",
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"eventfd",
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"eventfd2",
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"execve",
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"execveat",
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"exit",
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"exit_group",
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"faccessat",
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"fadvise64",
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"fadvise64_64",
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"fallocate",
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"fanotify_mark",
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"fchdir",
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"fchmod",
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"fchmodat",
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"fchown",
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"fchown32",
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"fchownat",
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"fcntl",
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"fcntl64",
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"fdatasync",
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"fgetxattr",
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"flistxattr",
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"flock",
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"fork",
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"fremovexattr",
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"fsetxattr",
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"fstat",
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"fstat64",
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"fstatat64",
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"fstatfs",
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"fstatfs64",
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"fsync",
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"ftruncate",
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"ftruncate64",
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"futex",
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"futimesat",
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"getcpu",
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"getcwd",
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"getdents",
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"getdents64",
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"getegid",
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"getegid32",
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"geteuid",
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"geteuid32",
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"getgid",
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"getgid32",
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"getgroups",
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"getgroups32",
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"getitimer",
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"getpeername",
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"getpgid",
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"getpgrp",
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"getpid",
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"getppid",
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"getpriority",
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"getrandom",
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"getresgid",
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"getresgid32",
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"getresuid",
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"getresuid32",
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"getrlimit",
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"get_robust_list",
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"getrusage",
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"getsid",
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"getsockname",
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"getsockopt",
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"get_thread_area",
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"gettid",
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"gettimeofday",
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"getuid",
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"getuid32",
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"getxattr",
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"inotify_add_watch",
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"inotify_init",
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"inotify_init1",
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"inotify_rm_watch",
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"io_cancel",
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"ioctl",
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"io_destroy",
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"io_getevents",
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"ioprio_get",
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"ioprio_set",
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"io_setup",
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"io_submit",
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"ipc",
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"kill",
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"lchown",
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"lchown32",
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"lgetxattr",
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"link",
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"linkat",
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"listen",
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"listxattr",
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"llistxattr",
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"_llseek",
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"lremovexattr",
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"lseek",
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"lsetxattr",
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"lstat",
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"lstat64",
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"madvise",
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"memfd_create",
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"mincore",
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"mkdir",
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"mkdirat",
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"mknod",
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"mknodat",
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"mlock",
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"mlock2",
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"mlockall",
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"mmap",
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"mmap2",
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"mprotect",
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"mq_getsetattr",
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"mq_notify",
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"mq_open",
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"mq_timedreceive",
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"mq_timedsend",
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"mq_unlink",
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"mremap",
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"msgctl",
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"msgget",
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"msgrcv",
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"msgsnd",
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"msync",
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"munlock",
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"munlockall",
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"munmap",
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"nanosleep",
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"newfstatat",
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"_newselect",
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"open",
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"openat",
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"pause",
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"pipe",
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"pipe2",
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"poll",
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"ppoll",
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"prctl",
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"pread64",
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"preadv",
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"prlimit64",
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"pselect6",
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"pwrite64",
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"pwritev",
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"read",
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"readahead",
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"readlink",
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"readlinkat",
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"readv",
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"recv",
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"recvfrom",
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"recvmmsg",
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"recvmsg",
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"remap_file_pages",
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"removexattr",
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"rename",
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"renameat",
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"renameat2",
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"restart_syscall",
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"rmdir",
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"rt_sigaction",
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"rt_sigpending",
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"rt_sigprocmask",
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"rt_sigqueueinfo",
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"rt_sigreturn",
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"rt_sigsuspend",
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"rt_sigtimedwait",
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"rt_tgsigqueueinfo",
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"sched_getaffinity",
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"sched_getattr",
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"sched_getparam",
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"sched_get_priority_max",
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"sched_get_priority_min",
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"sched_getscheduler",
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"sched_rr_get_interval",
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"sched_setaffinity",
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"sched_setattr",
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"sched_setparam",
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"sched_setscheduler",
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"sched_yield",
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"seccomp",
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"select",
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"semctl",
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"semget",
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"semop",
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"semtimedop",
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"send",
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"sendfile",
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"sendfile64",
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"sendmmsg",
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"sendmsg",
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"sendto",
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"setfsgid",
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"setfsgid32",
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"setfsuid",
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"setfsuid32",
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"setgid",
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"setgid32",
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"setgroups",
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"setgroups32",
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"setitimer",
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"setpgid",
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"setpriority",
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"setregid",
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"setregid32",
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"setresgid",
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"setresgid32",
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"setresuid",
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"setresuid32",
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"setreuid",
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"setreuid32",
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"setrlimit",
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"set_robust_list",
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"setsid",
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"setsockopt",
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"set_thread_area",
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"set_tid_address",
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"setuid",
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"setuid32",
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"setxattr",
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"shmat",
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"shmctl",
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"shmdt",
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"shmget",
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"shutdown",
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"sigaltstack",
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"signalfd",
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"signalfd4",
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"sigreturn",
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"socket",
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"socketcall",
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"socketpair",
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"splice",
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"stat",
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"stat64",
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"statfs",
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"statfs64",
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"symlink",
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"symlinkat",
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"sync",
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"sync_file_range",
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"syncfs",
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"sysinfo",
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"syslog",
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"tee",
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"tgkill",
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"time",
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"timer_create",
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"timer_delete",
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"timerfd_create",
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"timerfd_gettime",
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"timerfd_settime",
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"timer_getoverrun",
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"timer_gettime",
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"timer_settime",
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"times",
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"tkill",
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"truncate",
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"truncate64",
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"ugetrlimit",
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"umask",
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"uname",
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"unlink",
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"unlinkat",
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"utime",
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"utimensat",
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"utimes",
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"vfork",
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"vmsplice",
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"wait4",
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"waitid",
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"waitpid",
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"write",
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"writev",
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},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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{
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Names: []string{"personality"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{
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{
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Index: 0,
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Value: 0x0,
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Op: rspec.OpEqualTo,
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},
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{
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Index: 0,
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Value: 0x0008,
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Op: rspec.OpEqualTo,
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},
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{
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Index: 0,
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Value: 0xffffffff,
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Op: rspec.OpEqualTo,
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},
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},
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},
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}
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var sysCloneFlagsIndex uint
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capSysAdmin := false
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caps := make(map[string]bool)
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for _, cap := range rs.Process.Capabilities.Bounding {
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caps[cap] = true
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}
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for _, cap := range rs.Process.Capabilities.Effective {
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caps[cap] = true
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}
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for _, cap := range rs.Process.Capabilities.Inheritable {
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caps[cap] = true
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}
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for _, cap := range rs.Process.Capabilities.Permitted {
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caps[cap] = true
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}
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for _, cap := range rs.Process.Capabilities.Ambient {
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caps[cap] = true
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}
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for cap := range caps {
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switch cap {
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case "CAP_DAC_READ_SEARCH":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"open_by_handle_at"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_ADMIN":
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capSysAdmin = true
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{
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"bpf",
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"clone",
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"fanotify_init",
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"lookup_dcookie",
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"mount",
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"name_to_handle_at",
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"perf_event_open",
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"setdomainname",
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"sethostname",
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"setns",
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"umount",
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"umount2",
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"unshare",
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},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_BOOT":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"reboot"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_CHROOT":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"chroot"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_MODULE":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{
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"delete_module",
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"init_module",
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"finit_module",
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"query_module",
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},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_PACCT":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"acct"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_PTRACE":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{
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"kcmp",
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"process_vm_readv",
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"process_vm_writev",
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"ptrace",
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},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_RAWIO":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{
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"iopl",
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"ioperm",
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},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_TIME":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{
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"settimeofday",
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"stime",
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"adjtimex",
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},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "CAP_SYS_TTY_CONFIG":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"vhangup"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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}
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}
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if !capSysAdmin {
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"clone"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{
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{
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Index: sysCloneFlagsIndex,
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Value: CloneNewNS | CloneNewUTS | CloneNewIPC | CloneNewUser | CloneNewPID | CloneNewNet,
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ValueTwo: 0,
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Op: rspec.OpMaskedEqual,
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},
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},
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},
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}...)
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}
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arch := runtime.GOARCH
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switch arch {
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case "arm", "arm64":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{
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"breakpoint",
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"cacheflush",
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"set_tls",
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},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "amd64", "x32":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"arch_prctl"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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fallthrough
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case "x86":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"modify_ldt"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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case "s390", "s390x":
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{
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"s390_pci_mmio_read",
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"s390_pci_mmio_write",
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"s390_runtime_instr",
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},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{},
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},
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}...)
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/* Flags parameter of the clone syscall is the 2nd on s390 */
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syscalls = append(syscalls, []rspec.LinuxSyscall{
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{
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Names: []string{"clone"},
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Action: rspec.ActAllow,
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Args: []rspec.LinuxSeccompArg{
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{
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Index: 1,
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Value: 2080505856,
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ValueTwo: 0,
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Op: rspec.OpMaskedEqual,
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},
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},
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},
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}...)
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}
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return &rspec.LinuxSeccomp{
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DefaultAction: rspec.ActErrno,
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Architectures: arches(),
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Syscalls: syscalls,
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}
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}
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