Path of cgroup is wrong when running a container in a container. Use
the root path of mountinfo fetched from /proc/$(shim_pid)/mountinfo
to trim the path obtained from /proc/self/mountinfo.
Fixes: #131
Signed-off-by: 乔琛 10307740 <qiao.chen@zte.com.cn>
When setting memory.max/memory.swap.max in cgroup v2, Linux uses "max"
instead of "-1" to indicate no restriction on memory usage. The
set_limit and set_memswap_limit functions of the memory controller
accept i64 as a parameter. In cgroupv2, if the parameter is -1, "max"
should be written into the cgroup file.
Fixes#128
Signed-off-by: mengze <mengze@linux.alibaba.com>
Kernel 5.19 introduces `memory.peak` and kernel 6.5 introduces
`memory.swap.peak` to expose the memory and swap usage watermark.
This change use these values to fill `max_usage_in_bytes`.
Signed-off-by: HeRaNO <heran55@126.com>
For some cgroup file operations, when failed, add the path
and the value (for write operation) to the error message.
Fixes: #93
Signed-off-by: bin liu <liubin0329@gmail.com>
Setting (writing into) `memory.kmem.limit_in_bytes` is not supported in
Linux kernel >= 5.16 (see kernel commit 58056f77502: "memcg, kmem:
further deprecate kmem.limit_in_bytes"):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=58056f77502
If the write call in `set_kmem_limit()` returns EOPNOTSUPP, log a
warning message but ignore the error (do nothing).
Add a unit-test for `set_kmem_limit` in cgroups v1.
Fix#81
Signed-off-by: Dov Murik <dov.murik1@il.ibm.com>
Add feature "serde" that derives all resource and statistics types from
Serialize and Deserialize. The feature is turned off by default.
Fixes#54Fixes#55Fixes#56
Signed-off-by: Felix Obenhuber <felix@obenhuber.de>
There's so many Duplicated read_string_from method in different
subsystem's implementation, so as read_u64_from/read_i64_from methods.
(1) Move the read_string_from method into `lib.rs`,
called by each subsystem implementation as needed.
(2) Refactor read_u[i]64_from method with the help Rust Generic f
unction `read_from` and wrapped by read_u64_from or read_i64_from.
fix: #20
Signed-off-by: LiYa'nan <oliverliyn@gmail.com>
Delete check_support and stop detecting subsystems by finding in the
root folders because the detecting method is not accurate.
Signed-off-by: Tim Zhang <tim@hyper.sh>
Use idiomatic Option::None to represent optional fields.
This enables updates where not all fields need to be specified.
Signed-off-by: Tim Zhang <tim@hyper.sh>
Customized attributes are useful for customized kernels.
Usage:
let resource = &mut cgroups::Resources::default();
resource.cpu.attrs.insert("cpu.cfs_init_buffer_us", "10".to_string());
// apply here
Signed-off-by: Tim Zhang <tim@hyper.sh>
