userspace/memory/stack/environment/
entry.rs

1use crate::target::arch::Pointer;
2
3#[repr(C)]
4pub struct Entry {
5    pub prev: *mut Entry,
6    pub next: *mut Entry,
7    pub pointer: Pointer, // armazenar o ponteiro cru
8}
9
10impl Entry {
11    pub fn from_pointer(pointer: Pointer) -> Entry {
12        Entry {
13            prev: core::ptr::null_mut(),
14            next: core::ptr::null_mut(),
15            pointer: pointer,
16        }
17    }
18
19    pub fn key(&self) -> &str {
20        // Create a slice from the raw pointer
21        // let s = unsafe { core::slice::from_raw_parts(self.pointer.0, l) };
22        let c_str = unsafe { core::ffi::CStr::from_ptr(self.pointer.0 as *mut i8) };
23
24        let r_str = c_str.to_str().unwrap();
25
26        if let Some(pos) = r_str.find('=') {
27            &r_str[..pos]
28        } else {
29            r_str
30        }
31    }
32
33    pub fn value(&self) -> Option<&str> {
34        let c_str = unsafe { core::ffi::CStr::from_ptr(self.pointer.0 as *mut i8) };
35
36        let r_str = c_str.to_str().unwrap();
37
38        // Split at '=' character to get key and value
39        if let Some(pos) = r_str.find('=') {
40            Some(&r_str[(pos + 1)..])
41        } else {
42            None
43        }
44    }
45}
46
47impl core::fmt::Debug for Entry {
48    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
49        // unsafe {
50        // let cstr = core::ffi::CStr::from_ptr(self.pointer.0 as *const i8);
51        let _cstr = self.pointer.0;
52
53        let _ = write!(f, "Entry: {{ ");
54        let _ = write!(f, "{:?} = {:?}, ", self.key(), self.value());
55        let _ = write!(f, " }}");
56        return Ok(());
57        // }
58    }
59}
userspace/memory/stack/environment/entry.rs

userspace/memory/stack/environment/
entry.rs
