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feat(storage): scoped grants (subtree, ro/rw), narrow-only, release revokes all holders; IPC KEEP_DELEGATE opt-in; shell cd/pwd, programs get ro cwd

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This commit is contained in:
Gabriel Kaszewski
2026-10-27 20:20:34 +01:00
parent c603a578c0
commit 1fc5a54f06
38 changed files with 1237 additions and 170 deletions
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10
crates/libkos/src/syscall/ipc.rs
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@@ -4,6 +4,8 @@ use super::{call0, raw, slot_of, Error, Result};
use types::bounded::CapSlot;
use types::syscall_abi::*;
pub use types::syscall_abi::Give;
/// What a receiving call got.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Received {
@@ -48,7 +50,7 @@ pub fn create_endpoint() -> Option<CapSlot> {
slot_of(call0(SYS_CREATE_ENDPOINT)).ok()
}
pub fn send_msg(endpoint: CapSlot, words: [usize; 4], cap: Option<CapSlot>) -> Result<()> {
pub fn send_msg(endpoint: CapSlot, words: [usize; 4], cap: Option<Give>) -> Result<()> {
raw(
SYS_SEND,
message_regs(endpoint.value() as usize, words, cap),
@@ -61,7 +63,7 @@ pub fn receive_msg(endpoint: CapSlot) -> Result<Received> {
}
/// Sends and waits for the reply.
pub fn call(endpoint: CapSlot, words: [usize; 4], cap: Option<CapSlot>) -> Result<Received> {
pub fn call(endpoint: CapSlot, words: [usize; 4], cap: Option<Give>) -> Result<Received> {
raw(
SYS_CALL,
message_regs(endpoint.value() as usize, words, cap),
@@ -80,12 +82,12 @@ pub fn request(endpoint: CapSlot, words: [usize; 4]) -> Result<[usize; 4]> {
}
/// Answers the last `Call` this thread received.
pub fn reply(words: [usize; 4], cap: Option<CapSlot>) -> Result<()> {
pub fn reply(words: [usize; 4], cap: Option<Give>) -> Result<()> {
raw(SYS_REPLY, message_regs(0, words, cap)).map(|_| ())
}
/// Replies to the pending `Call` (if any), then receives the next message.
pub fn reply_recv(endpoint: CapSlot, words: [usize; 4], cap: Option<CapSlot>) -> Result<Received> {
pub fn reply_recv(endpoint: CapSlot, words: [usize; 4], cap: Option<Give>) -> Result<Received> {
raw(
SYS_REPLY_RECV,
message_regs(endpoint.value() as usize, words, cap),