vendor/nix/test/test_nmount.rs

   1 use crate::*;
   2 use nix::{
   3     errno::Errno,
   4     mount::{unmount, MntFlags, Nmount},
   5 };
   6 use std::{ffi::CString, fs::File, path::Path};
   7 use tempfile::tempdir;
   8
   9 #[test]
  10 fn ok() {
  11     require_mount!("nullfs");
  12
  13     let mountpoint = tempdir().unwrap();
  14     let target = tempdir().unwrap();
  15     let _sentry = File::create(target.path().join("sentry")).unwrap();
  16
  17     let fstype = CString::new("fstype").unwrap();
  18     let nullfs = CString::new("nullfs").unwrap();
  19     Nmount::new()
  20         .str_opt(&fstype, &nullfs)
  21         .str_opt_owned("fspath", mountpoint.path().to_str().unwrap())
  22         .str_opt_owned("target", target.path().to_str().unwrap())
  23         .nmount(MntFlags::empty())
  24         .unwrap();
  25
  26     // Now check that the sentry is visible through the mountpoint
  27     let exists = Path::exists(&mountpoint.path().join("sentry"));
  28
  29     // Cleanup the mountpoint before asserting
  30     unmount(mountpoint.path(), MntFlags::empty()).unwrap();
  31
  32     assert!(exists);
  33 }
  34
  35 #[test]
  36 fn bad_fstype() {
  37     let mountpoint = tempdir().unwrap();
  38     let target = tempdir().unwrap();
  39     let _sentry = File::create(target.path().join("sentry")).unwrap();
  40
  41     let e = Nmount::new()
  42         .str_opt_owned("fspath", mountpoint.path().to_str().unwrap())
  43         .str_opt_owned("target", target.path().to_str().unwrap())
  44         .nmount(MntFlags::empty())
  45         .unwrap_err();
  46
  47     assert_eq!(e.error(), Errno::EINVAL);
  48     assert_eq!(e.errmsg(), Some("Invalid fstype"));
  49 }