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use crate::bcachefs;
use std::ffi::CStr;
use std::fmt;
pub use crate::c::bch_errcode;
impl fmt::Display for bch_errcode {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let s = unsafe { CStr::from_ptr(bcachefs::bch2_err_str(*self as i32)) };
write!(f, "{:?}", s)
}
}
/* Can we make a function generic over ptr constness? */
pub fn errptr_to_result<T>(p: *mut T) -> Result<*mut T, bch_errcode> {
let addr = p as usize;
let max_err: isize = -4096;
if addr > max_err as usize {
let addr = addr as i32;
let err: bch_errcode = unsafe { std::mem::transmute(-addr) };
Err(err)
} else {
Ok(p)
}
}
pub fn errptr_to_result_c<T>(p: *const T) -> Result<*const T, bch_errcode> {
let addr = p as usize;
let max_err: isize = -4096;
if addr > max_err as usize {
let addr = addr as i32;
let err: bch_errcode = unsafe { std::mem::transmute(-addr) };
Err(err)
} else {
Ok(p)
}
}
impl std::error::Error for bch_errcode {}
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