userspace/memory/stack/environment/
entry.rs

1use crate::target::arch::Pointer;
2
3ample::r#struct!(
4    #[repr(C)]
5    pub struct Entry {
6        pub prev: *mut Entry,
7        pub next: *mut Entry,
8        pub pointer: Pointer, // armazenar o ponteiro cru
9    }
10);
11
12impl Entry {
13    pub fn from_pointer(pointer: Pointer) -> Entry {
14        Entry {
15            prev: core::ptr::null_mut(),
16            next: core::ptr::null_mut(),
17            pointer: pointer,
18        }
19    }
20
21    pub fn key(&self) -> &str {
22        // Create a slice from the raw pointer
23        // let s = unsafe { core::slice::from_raw_parts(self.pointer.0, l) };
24        let c_str = unsafe { core::ffi::CStr::from_ptr(self.pointer.0 as *mut i8) };
25
26        let r_str = c_str.to_str().unwrap();
27
28        if let Some(pos) = r_str.find('=') {
29            &r_str[..pos]
30        } else {
31            r_str
32        }
33    }
34
35    pub fn value(&self) -> Option<&str> {
36        let c_str = unsafe { core::ffi::CStr::from_ptr(self.pointer.0 as *mut i8) };
37
38        let r_str = c_str.to_str().unwrap();
39
40        // Split at '=' character to get key and value
41        if let Some(pos) = r_str.find('=') {
42            Some(&r_str[(pos + 1)..])
43        } else {
44            None
45        }
46    }
47}
48
49impl core::fmt::Debug for Entry {
50    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
51        // unsafe {
52        // let cstr = core::ffi::CStr::from_ptr(self.pointer.0 as *const i8);
53        let _cstr = self.pointer.0;
54
55        let _ = write!(f, "Entry: {{ ");
56        let _ = write!(f, "{:?} = {:?}, ", self.key(), self.value());
57        let _ = write!(f, " }}");
58        return Ok(());
59        // }
60    }
61}
userspace/memory/stack/environment/entry.rs

userspace/memory/stack/environment/
entry.rs
