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use utils;
use DiskExt;
use DiskType;
use libc::{c_char, c_void, statfs};
use std::collections::HashMap;
use std::ffi::{OsStr, OsString};
use std::fs;
use std::mem;
use std::mem::MaybeUninit;
use std::os::unix::ffi::OsStringExt;
use std::path::{Path, PathBuf};
use std::ptr;
use sys::ffi;
pub struct Disk {
type_: DiskType,
name: OsString,
file_system: Vec<u8>,
mount_point: PathBuf,
total_space: u64,
available_space: u64,
}
impl DiskExt for Disk {
fn get_type(&self) -> DiskType {
self.type_
}
fn get_name(&self) -> &OsStr {
&self.name
}
fn get_file_system(&self) -> &[u8] {
&self.file_system
}
fn get_mount_point(&self) -> &Path {
&self.mount_point
}
fn get_total_space(&self) -> u64 {
self.total_space
}
fn get_available_space(&self) -> u64 {
self.available_space
}
fn refresh(&mut self) -> bool {
unsafe {
let mut stat: statfs = mem::zeroed();
let mount_point_cpath = utils::to_cpath(&self.mount_point);
if statfs(mount_point_cpath.as_ptr() as *const i8, &mut stat) == 0 {
self.available_space = u64::from(stat.f_bsize) * stat.f_bavail;
true
} else {
false
}
}
}
}
static DISK_TYPES: once_cell::sync::Lazy<HashMap<OsString, DiskType>> =
once_cell::sync::Lazy::new(get_disk_types);
fn get_disk_types() -> HashMap<OsString, DiskType> {
let mut master_port: ffi::mach_port_t = 0;
let mut media_iterator: ffi::io_iterator_t = 0;
let mut ret = HashMap::with_capacity(1);
unsafe {
ffi::IOMasterPort(ffi::MACH_PORT_NULL, &mut master_port);
let matching_dictionary = ffi::IOServiceMatching(b"IOMedia\0".as_ptr() as *const i8);
let result = ffi::IOServiceGetMatchingServices(
master_port,
matching_dictionary,
&mut media_iterator,
);
if result != ffi::KERN_SUCCESS as i32 {
sysinfo_debug!("Error: IOServiceGetMatchingServices() = {}", result);
return ret;
}
loop {
let next_media = ffi::IOIteratorNext(media_iterator);
if next_media == 0 {
break;
}
let mut props = MaybeUninit::<ffi::CFMutableDictionaryRef>::uninit();
let result = ffi::IORegistryEntryCreateCFProperties(
next_media,
props.as_mut_ptr(),
ffi::kCFAllocatorDefault,
0,
);
let props = props.assume_init();
if result == ffi::KERN_SUCCESS as i32 && check_value(props, b"Whole\0") {
let mut name: ffi::io_name_t = mem::zeroed();
if ffi::IORegistryEntryGetName(next_media, name.as_mut_ptr() as *mut c_char)
== ffi::KERN_SUCCESS as i32
{
ret.insert(
make_name(&name),
if check_value(props, b"RAID\0") {
DiskType::Unknown(-1)
} else {
DiskType::SSD
},
);
}
ffi::CFRelease(props as *mut _);
}
ffi::IOObjectRelease(next_media);
}
ffi::IOObjectRelease(media_iterator);
}
ret
}
fn make_name(v: &[u8]) -> OsString {
for (pos, x) in v.iter().enumerate() {
if *x == 0 {
return OsStringExt::from_vec(v[0..pos].to_vec());
}
}
OsStringExt::from_vec(v.to_vec())
}
pub(crate) fn get_disks() -> Vec<Disk> {
match fs::read_dir("/Volumes") {
Ok(d) => d
.flat_map(|x| {
if let Ok(ref entry) = x {
let mount_point = utils::realpath(&entry.path());
if mount_point.as_os_str().is_empty() {
None
} else {
let name = entry.path().file_name()?.to_owned();
let type_ = DISK_TYPES
.get(&name)
.cloned()
.unwrap_or(DiskType::Unknown(-2));
Some(new_disk(name, &mount_point, type_))
}
} else {
None
}
})
.collect(),
_ => Vec::new(),
}
}
unsafe fn check_value(dict: ffi::CFMutableDictionaryRef, key: &[u8]) -> bool {
let key = ffi::CFStringCreateWithCStringNoCopy(
ptr::null_mut(),
key.as_ptr() as *const c_char,
ffi::kCFStringEncodingMacRoman,
ffi::kCFAllocatorNull as *mut c_void,
);
let ret = ffi::CFDictionaryContainsKey(dict as ffi::CFDictionaryRef, key as *const c_void) != 0
&& *(ffi::CFDictionaryGetValue(dict as ffi::CFDictionaryRef, key as *const c_void)
as *const ffi::Boolean)
!= 0;
ffi::CFRelease(key as *const c_void);
ret
}
fn new_disk(name: OsString, mount_point: &Path, type_: DiskType) -> Disk {
let mount_point_cpath = utils::to_cpath(mount_point);
let mut total_space = 0;
let mut available_space = 0;
let mut file_system = None;
unsafe {
let mut stat: statfs = mem::zeroed();
if statfs(mount_point_cpath.as_ptr() as *const i8, &mut stat) == 0 {
total_space = u64::from(stat.f_bsize) * stat.f_blocks;
available_space = stat.f_bfree * stat.f_blocks;
let mut vec = Vec::with_capacity(stat.f_fstypename.len());
for x in &stat.f_fstypename {
if *x == 0 {
break;
}
vec.push(*x as u8);
}
file_system = Some(vec);
}
}
Disk {
type_,
name,
file_system: file_system.unwrap_or_else(|| b"<Unknown>".to_vec()),
mount_point: mount_point.to_owned(),
total_space,
available_space,
}
}