From 1b6a04ca5504955c571d1c97504fb45ea0befee4 Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Mon, 8 Jan 2024 01:21:28 +0400
Subject: Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>
---
 vendor/redox_syscall/src/scheme/mod.rs | 68 ++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 vendor/redox_syscall/src/scheme/mod.rs

(limited to 'vendor/redox_syscall/src/scheme/mod.rs')

diff --git a/vendor/redox_syscall/src/scheme/mod.rs b/vendor/redox_syscall/src/scheme/mod.rs
new file mode 100644
index 0000000..61655da
--- /dev/null
+++ b/vendor/redox_syscall/src/scheme/mod.rs
@@ -0,0 +1,68 @@
+use core::{slice, str};
+
+use crate::{Error, Result, EOPNOTSUPP, ESKMSG, Packet, SKMSG_FRETURNFD};
+
+pub use self::scheme::Scheme;
+pub use self::scheme_mut::SchemeMut;
+pub use self::scheme_block::SchemeBlock;
+pub use self::scheme_block_mut::SchemeBlockMut;
+pub use self::seek::*;
+
+unsafe fn str_from_raw_parts(ptr: *const u8, len: usize) -> Option<&'static str> {
+    let slice = slice::from_raw_parts(ptr, len);
+    str::from_utf8(slice).ok()
+}
+
+mod scheme;
+mod scheme_mut;
+mod scheme_block;
+mod scheme_block_mut;
+mod seek;
+
+pub struct CallerCtx {
+    pub pid: usize,
+    pub uid: u32,
+    pub gid: u32,
+}
+
+pub enum OpenResult {
+    ThisScheme { number: usize },
+    OtherScheme { fd: usize },
+}
+
+// TODO: Find a better solution than generate.sh
+pub(crate) fn convert_to_this_scheme(r: Result<usize>) -> Result<OpenResult> {
+    r.map(|number| OpenResult::ThisScheme { number })
+}
+pub(crate) fn convert_to_this_scheme_block(r: Result<Option<usize>>) -> Result<Option<OpenResult>> {
+    r.map(|o| o.map(|number| OpenResult::ThisScheme { number }))
+}
+pub(crate) fn convert_in_scheme_handle_block(_: &Packet, result: Result<Option<OpenResult>>) -> Result<Option<usize>> {
+    match result {
+        Ok(Some(OpenResult::ThisScheme { number })) => Ok(Some(number)),
+        Ok(Some(OpenResult::OtherScheme { .. })) => Err(Error::new(EOPNOTSUPP)),
+        Ok(None) => Ok(None),
+        Err(err) => Err(err),
+    }
+}
+pub(crate) fn convert_in_scheme_handle(packet: &mut Packet, result: Result<OpenResult>) -> Result<usize> {
+    match result {
+        Ok(OpenResult::ThisScheme { number }) => Ok(number),
+        Ok(OpenResult::OtherScheme { fd }) => {
+            packet.b = SKMSG_FRETURNFD;
+            packet.c = fd;
+            Err(Error::new(ESKMSG))
+        }
+        Err(err) => Err(err),
+    }
+}
+
+impl CallerCtx {
+    pub fn from_packet(packet: &Packet) -> Self {
+        Self {
+            pid: packet.pid,
+            uid: packet.uid,
+            gid: packet.gid,
+        }
+    }
+}
-- 
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