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use crate::error;
#[allow(non_camel_case_types)]
#[repr(C)]
pub(crate) struct guestfs_h {
_unused: [u32; 0],
}
#[link(name = "guestfs")]
extern "C" {
fn guestfs_create() -> *mut guestfs_h;
fn guestfs_create_flags(flags: i64) -> *mut guestfs_h;
fn guestfs_close(g: *mut guestfs_h);
}
const GUESTFS_CREATE_NO_ENVIRONMENT: i64 = 1;
const GUESTFS_CREATE_NO_CLOSE_ON_EXIT: i64 = 2;
pub struct Handle {
pub(crate) g: *mut guestfs_h,
}
impl Handle {
pub fn create() -> Result<Handle, error::Error> {
let g = unsafe { guestfs_create() };
if g.is_null() {
Err(error::Error::Create)
} else {
Ok(Handle { g })
}
}
pub fn create_flags(flags: CreateFlags) -> Result<Handle, error::Error> {
let g = unsafe { guestfs_create_flags(flags.to_libc_int()) };
if g.is_null() {
Err(error::Error::Create)
} else {
Ok(Handle { g })
}
}
}
impl Drop for Handle {
fn drop(&mut self) {
unsafe { guestfs_close(self.g) }
}
}
pub struct CreateFlags {
create_no_environment_flag: bool,
create_no_close_on_exit_flag: bool,
}
impl CreateFlags {
pub fn none() -> CreateFlags {
CreateFlags {
create_no_environment_flag: false,
create_no_close_on_exit_flag: false,
}
}
pub fn new() -> CreateFlags {
CreateFlags::none()
}
pub fn create_no_environment(mut self, flag: bool) -> CreateFlags {
self.create_no_environment_flag = flag;
self
}
pub fn create_no_close_on_exit_flag(mut self, flag: bool) -> CreateFlags {
self.create_no_close_on_exit_flag = flag;
self
}
unsafe fn to_libc_int(self) -> i64 {
let mut flag = 0;
flag |= if self.create_no_environment_flag {
GUESTFS_CREATE_NO_ENVIRONMENT
} else {
0
};
flag |= if self.create_no_close_on_exit_flag {
GUESTFS_CREATE_NO_CLOSE_ON_EXIT
} else {
0
};
flag
}
}
pub struct UUID {
uuid: [u8; 32],
}
impl UUID {
pub(crate) fn new(uuid: [u8; 32]) -> UUID {
UUID { uuid }
}
pub fn to_bytes(self) -> [u8; 32] {
self.uuid
}
}