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#![cfg(not(target_os = "wasi"))]
#[cfg(feature = "fs")]
#[cfg(not(target_os = "redox"))]
#[test]
fn test_mmap() {
use rustix::fs::{cwd, openat, Mode, OFlags};
use rustix::io::write;
use rustix::mm::{mmap, munmap, MapFlags, ProtFlags};
use std::ptr::null_mut;
use std::slice;
let tmp = tempfile::tempdir().unwrap();
let dir = openat(cwd(), tmp.path(), OFlags::RDONLY, Mode::empty()).unwrap();
let file = openat(
&dir,
"foo",
OFlags::CREATE | OFlags::WRONLY | OFlags::TRUNC,
Mode::RUSR,
)
.unwrap();
write(&file, &[b'a'; 8192]).unwrap();
drop(file);
let file = openat(&dir, "foo", OFlags::RDONLY, Mode::empty()).unwrap();
unsafe {
let addr = mmap(
null_mut(),
8192,
ProtFlags::READ,
MapFlags::PRIVATE,
&file,
0,
)
.unwrap();
let slice = slice::from_raw_parts(addr.cast::<u8>(), 8192);
assert_eq!(slice, &[b'a'; 8192]);
munmap(addr, 8192).unwrap();
}
let file = openat(&dir, "foo", OFlags::RDONLY, Mode::empty()).unwrap();
unsafe {
assert_eq!(
mmap(
null_mut(),
8192,
ProtFlags::READ,
MapFlags::PRIVATE,
&file,
u64::MAX,
)
.unwrap_err()
.raw_os_error(),
libc::EINVAL
);
}
}
#[test]
fn test_mmap_anonymous() {
use rustix::mm::{mmap_anonymous, munmap, MapFlags, ProtFlags};
use std::ptr::null_mut;
use std::slice;
unsafe {
let addr = mmap_anonymous(null_mut(), 8192, ProtFlags::READ, MapFlags::PRIVATE).unwrap();
let slice = slice::from_raw_parts(addr.cast::<u8>(), 8192);
assert_eq!(slice, &[b'\0'; 8192]);
munmap(addr, 8192).unwrap();
}
}
#[test]
fn test_mprotect() {
use rustix::mm::{mmap_anonymous, mprotect, munmap, MapFlags, MprotectFlags, ProtFlags};
use std::ptr::null_mut;
use std::slice;
unsafe {
let addr = mmap_anonymous(null_mut(), 8192, ProtFlags::READ, MapFlags::PRIVATE).unwrap();
mprotect(addr, 8192, MprotectFlags::empty()).unwrap();
mprotect(addr, 8192, MprotectFlags::READ).unwrap();
let slice = slice::from_raw_parts(addr.cast::<u8>(), 8192);
assert_eq!(slice, &[b'\0'; 8192]);
munmap(addr, 8192).unwrap();
}
}
#[test]
fn test_mlock() {
use rustix::mm::{mlock, mmap_anonymous, munlock, munmap, MapFlags, ProtFlags};
#[cfg(any(target_os = "android", target_os = "linux"))]
use rustix::mm::{mlock_with, MlockFlags};
use std::ptr::null_mut;
unsafe {
let addr = mmap_anonymous(null_mut(), 8192, ProtFlags::READ, MapFlags::PRIVATE).unwrap();
mlock(addr, 8192).unwrap();
munlock(addr, 8192).unwrap();
#[cfg(any(target_os = "android", target_os = "linux"))]
{
match mlock_with(addr, 8192, MlockFlags::empty()) {
Err(rustix::io::Errno::NOSYS) => (),
Err(err) => Err(err).unwrap(),
Ok(()) => munlock(addr, 8192).unwrap(),
}
#[cfg(linux_raw)] // libc doesn't expose `MLOCK_UNFAULT` yet.
{
match mlock_with(addr, 8192, MlockFlags::ONFAULT) {
Err(rustix::io::Errno::NOSYS) => (),
Err(err) => Err(err).unwrap(),
Ok(()) => munlock(addr, 8192).unwrap(),
}
munlock(addr, 8192).unwrap();
}
}
munmap(addr, 8192).unwrap();
}
}
#[cfg(not(target_os = "redox"))]
#[test]
fn test_madvise() {
use rustix::mm::{madvise, mmap_anonymous, munmap, Advice, MapFlags, ProtFlags};
use std::ptr::null_mut;
unsafe {
let addr = mmap_anonymous(null_mut(), 8192, ProtFlags::READ, MapFlags::PRIVATE).unwrap();
madvise(addr, 8192, Advice::Normal).unwrap();
madvise(addr, 8192, Advice::DontNeed).unwrap();
#[cfg(any(target_os = "android", target_os = "linux"))]
madvise(addr, 8192, Advice::LinuxDontNeed).unwrap();
munmap(addr, 8192).unwrap();
}
}
#[test]
fn test_msync() {
use rustix::mm::{mmap_anonymous, msync, munmap, MapFlags, MsyncFlags, ProtFlags};
use std::ptr::null_mut;
unsafe {
let addr = mmap_anonymous(null_mut(), 8192, ProtFlags::READ, MapFlags::PRIVATE).unwrap();
msync(addr, 8192, MsyncFlags::SYNC).unwrap();
msync(addr, 8192, MsyncFlags::ASYNC).unwrap();
munmap(addr, 8192).unwrap();
}
}
|
