diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/test.rs | 1 | ||||
| -rw-r--r-- | test/test_resource.rs | 23 |
2 files changed, 24 insertions, 0 deletions
diff --git a/test/test.rs b/test/test.rs index 94f8e220..b882d174 100644 --- a/test/test.rs +++ b/test/test.rs @@ -24,6 +24,7 @@ mod test_mq; #[cfg(not(target_os = "redox"))] mod test_net; mod test_nix_path; +mod test_resource; mod test_poll; #[cfg(not(any(target_os = "redox", target_os = "fuchsia")))] mod test_pty; diff --git a/test/test_resource.rs b/test/test_resource.rs new file mode 100644 index 00000000..59697500 --- /dev/null +++ b/test/test_resource.rs @@ -0,0 +1,23 @@ +#[cfg(not(any(target_os = "redox", target_os = "fuchsia", target_os = "illumos")))] +use nix::sys::resource::{getrlimit, setrlimit, Resource}; + +/// Tests the RLIMIT_NOFILE functionality of getrlimit(), where the resource RLIMIT_NOFILE refers +/// to the maximum file descriptor number that can be opened by the process (aka the maximum number +/// of file descriptors that the process can open, since Linux 4.5). +/// +/// We first fetch the existing file descriptor maximum values using getrlimit(), then edit the +/// soft limit to make sure it has a new and distinct value to the hard limit. We then setrlimit() +/// to put the new soft limit in effect, and then getrlimit() once more to ensure the limits have +/// been updated. +#[test] +#[cfg(not(any(target_os = "redox", target_os = "fuchsia", target_os = "illumos")))] +pub fn test_resource_limits_nofile() { + let (soft_limit, hard_limit) = getrlimit(Resource::RLIMIT_NOFILE).unwrap(); + + let soft_limit = Some(soft_limit.map_or(1024, |v| v - 1)); + assert_ne!(soft_limit, hard_limit); + setrlimit(Resource::RLIMIT_NOFILE, soft_limit, hard_limit).unwrap(); + + let (new_soft_limit, _) = getrlimit(Resource::RLIMIT_NOFILE).unwrap(); + assert_eq!(new_soft_limit, soft_limit); +} |