Function setrlimit

pub fn setrlimit(
    resource: Resource,
    soft_limit: Option<rlim_t>,
    hard_limit: Option<rlim_t>,
) -> Result<()>

Set the current processes resource limits

Parameters

• resource: The Resource that we want to set the limits of.
• soft_limit: The value that the kernel enforces for the corresponding resource. Note: None input will be replaced by constant RLIM_INFINITY.
• hard_limit: The ceiling for the soft limit. Must be lower or equal to the current hard limit for non-root users. Note: None input will be replaced by constant RLIM_INFINITY.

Note: for some os (linux_gnu), setting hard_limit to RLIM_INFINITY can results EPERM Error. So you will need to set the number explicitly.

Examples

let soft_limit = Some(512);
let hard_limit = Some(1024);
setrlimit(Resource::RLIMIT_NOFILE, soft_limit, hard_limit).unwrap();

References

setrlimit(2)

Note: setrlimit provides a safe wrapper to libc’s setrlimit.