sys/linux/cgroup.txt

# Copyright 2018 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

include <uapi/linux/fcntl.h>

resource fd_cgroup[fd]
resource fd_cgroup_type[fd]
resource fd_cgroup_subtree[fd]
resource fd_cgroup_int[fd]
resource fd_cgroup_pid[fd]

mkdirat$cgroup_root(fd const[AT_FDCWD], path ptr[in, string[cgroup_dirs]], mode const[0x1ff])
mkdirat$cgroup(fd fd_cgroup, path ptr[in, string[cgroup_names]], mode const[0x1ff])
openat$cgroup_root(fd const[AT_FDCWD], file ptr[in, string[cgroup_dirs]], flags const[CGROUP_OPEN_FLAGS], mode const[0]) fd_cgroup
openat$cgroup(fd fd_cgroup, file ptr[in, string[cgroup_names]], flags const[CGROUP_OPEN_FLAGS], mode const[0]) fd_cgroup
openat$cgroup_ro(fd fd_cgroup, file ptr[in, string[cgroup_ctrl_read]], flags const[O_RDONLY], mode const[0]) fd
openat$cgroup_int(fd fd_cgroup, file ptr[in, string[cgroup_ctrl_int]], flags const[O_RDWR], mode const[0]) fd_cgroup_int
openat$cgroup_procs(fd fd_cgroup, file ptr[in, string[cgroup_proc_files]], flags const[O_RDWR], mode const[0]) fd_cgroup_pid
openat$cgroup_subtree(fd fd_cgroup, file ptr[in, string["cgroup.subtree_control"]], flags const[O_RDWR], mode const[0]) fd_cgroup_subtree
openat$cgroup_type(fd fd_cgroup, file ptr[in, string["cgroup.type"]], flags const[O_RDWR], mode const[0]) fd_cgroup_type
write$cgroup_int(fd fd_cgroup_int, buf ptr[in, fmt[hex, int64]], len bytesize[buf])
write$cgroup_pid(fd fd_cgroup_pid, buf ptr[in, fmt[hex, pid]], len bytesize[buf])
write$cgroup_subtree(fd fd_cgroup_subtree, buf ptr[in, cgroup_subtree], len bytesize[buf])
write$cgroup_type(fd fd_cgroup_type, buf ptr[in, string["threaded"]], len bytesize[buf])

cgroup_subtree {
	controls	array[cgroup_control]
} [packed]

cgroup_control {
	sign	flags[cgroup_control_signs, int8]
	subsys	stringnoz[cgroup_subsystems]
	sp	const[' ', int8]
} [packed]

cgroup_dirs = "./cgroup/syz0", "./cgroup/syz1", "./cgroup.cpu/syz0", "./cgroup.cpu/syz1", "./cgroup.net/syz0", "./cgroup.net/syz1"
cgroup_names = "syz0", "syz1"
cgroup_paths = "./cgroup/syz0", "./cgroup.cpu/syz0", "./cgroup.net/syz0", "./cgroup/syz1", "./cgroup.cpu/syz1", "./cgroup.net/syz1"
cgroup_control_signs = '+', '-'
cgroup_subsystems = "cpu", "memory", "io", "pids", "rdma"
cgroup_proc_files = "cgroup.procs", "cgroup.threads", "tasks"
cgroup_ctrl_read = "cgroup.controllers", "cgroup.events", "cgroup.stat", "cpu.stat", "cpu.stat", "io.stat", "memory.current", "memory.events", "memory.stat", "memory.swap.current", "pids.current", "pids.events", "rdma.current", "cpuacct.stat", "cpuacct.usage_all", "cpuacct.usage_percpu", "cpuacct.usage_percpu_sys", "cpuacct.usage_percpu_user", "cpuacct.usage_sys", "cpuacct.usage_user", "cpuset.effective_cpus", "cpuset.effective_mems", "cpuset.memory_pressure", "hugetlb.2MB.usage_in_bytes"
cgroup_ctrl_int = "cgroup.max.depth", "cgroup.max.descendants", "cpu.weight", "cpu.weight.nice", "io.bfq.weight", "io.max", "io.weight", "memory.high", "memory.low", "memory.max", "memory.swap.max", "pids.max", "rdma.max", "cgroup.clone_children", "cpuacct.usage", "cpuset.cpu_exclusive", "cpuset.cpus", "cpuset.mem_exclusive", "cpuset.mem_hardwall", "cpuset.memory_migrate", "cpuset.memory_spread_page", "cpuset.memory_spread_slab", "cpuset.mems", "cpuset.sched_load_balance", "cpuset.sched_relax_domain_level", "hugetlb.2MB.failcnt", "hugetlb.2MB.limit_in_bytes", "hugetlb.2MB.max_usage_in_bytes", "notify_on_release"

define CGROUP_OPEN_FLAGS	O_RDWR | O_PATH