From 9360e493db4dc6c05e5e11a3595a454f2a3abb52 Mon Sep 17 00:00:00 2001
From: vasilito <adminpupkin@gmail.com>
Date: Wed, 8 Jul 2026 13:55:46 +0300
Subject: [PATCH] kernel: add sys mem resource

---
 src/scheme/sys/mem.rs | 20 ++++++++++++++++++++
 src/scheme/sys/mod.rs |  2 ++
 2 files changed, 22 insertions(+)
 create mode 100644 src/scheme/sys/mem.rs

diff --git a/src/scheme/sys/mem.rs b/src/scheme/sys/mem.rs
new file mode 100644
index 0000000000..408c95b585
--- /dev/null
+++ b/src/scheme/sys/mem.rs
@@ -0,0 +1,20 @@
+use crate::{memory, sync::CleanLockToken, syscall::error::Result};
+use alloc::vec::Vec;
+
+pub fn resource(_token: &mut CleanLockToken) -> Result<Vec<u8>> {
+    let total_kib = memory::total_frames() as u64 * memory::PAGE_SIZE as u64 / 1024;
+    let free_kib = memory::free_frames() as u64 * memory::PAGE_SIZE as u64 / 1024;
+
+    Ok(format!(
+        "MemTotal: {} kB\n\
+MemFree: {} kB\n\
+MemAvailable: {} kB\n\
+Buffers: 0 kB\n\
+Cached: 0 kB\n\
+SwapTotal: 0 kB\n\
+SwapFree: 0 kB\n\
+SwapCached: 0 kB\n",
+        total_kib, free_kib, free_kib
+    )
+    .into_bytes())
+}
diff --git a/src/scheme/sys/mod.rs b/src/scheme/sys/mod.rs
index 81e7920da7..51f0e51add 100644
--- a/src/scheme/sys/mod.rs
+++ b/src/scheme/sys/mod.rs
@@ -34,6 +34,7 @@ mod fdstat;
 mod iostat;
 mod irq;
 mod log;
+mod mem;
 mod msr;
 mod stat;
 mod syscall;
@@ -110,6 +111,7 @@ const FILES: &[(&str, Kind)] = &[
     ("iostat", Rd(iostat::resource)),
     ("irq", Rd(irq::resource)),
     ("log", Rd(log::resource)),
+    ("mem", Rd(mem::resource)),
     ("syscall", Rd(syscall::resource)),
     ("uname", Rd(uname::resource)),
     ("env", Rd(|_| Ok(Vec::from(crate::startup::init_env())))),