cat_dev/fsemul/pcfs/sata_proto/
stat_file.rs

1//! Definitions, and handlers for the `StatFile` packet type.
2//!
3//! This doesn't actually "handle" anything itself. As this is the same as
4//! `GetInfoByQuery` query type 5. So we just parse as a body, and then in
5//! the handler call query type 5.
6
7use crate::errors::NetworkParseError;
8use bytes::{Buf, Bytes};
9use valuable::{Fields, NamedField, NamedValues, StructDef, Structable, Valuable, Value, Visit};
10
11/// A packet to get information about an open file handle.
12///
13/// This can do everything from "get the free space of the disk this path
14/// is on", to "get my some metadata about this very specific path."
15#[derive(Clone, Debug, PartialEq, Eq)]
16pub struct SataStatFilePacketBody {
17	file_descriptor: i32,
18}
19
20impl SataStatFilePacketBody {
21	#[must_use]
22	pub const fn file_descriptor(&self) -> i32 {
23		self.file_descriptor
24	}
25}
26
27impl TryFrom<Bytes> for SataStatFilePacketBody {
28	type Error = NetworkParseError;
29
30	fn try_from(mut value: Bytes) -> Result<Self, Self::Error> {
31		if value.len() < 0x4 {
32			return Err(NetworkParseError::FieldNotLongEnough(
33				"SataStatFile",
34				"Body",
35				0x4,
36				value.len(),
37				value,
38			));
39		}
40		if value.len() > 0x4 {
41			return Err(NetworkParseError::UnexpectedTrailer(
42				"SataStatFile",
43				value.slice(0x4..),
44			));
45		}
46
47		let fd = value.get_i32();
48
49		Ok(Self {
50			file_descriptor: fd,
51		})
52	}
53}
54
55const SATA_STAT_FILE_PACKET_BODY_FIELDS: &[NamedField<'static>] = &[NamedField::new("fd")];
56
57impl Structable for SataStatFilePacketBody {
58	fn definition(&self) -> StructDef<'_> {
59		StructDef::new_static(
60			"SataStatFilePacketBody",
61			Fields::Named(SATA_STAT_FILE_PACKET_BODY_FIELDS),
62		)
63	}
64}
65
66impl Valuable for SataStatFilePacketBody {
67	fn as_value(&self) -> Value<'_> {
68		Value::Structable(self)
69	}
70
71	fn visit(&self, visitor: &mut dyn Visit) {
72		visitor.visit_named_fields(&NamedValues::new(
73			SATA_STAT_FILE_PACKET_BODY_FIELDS,
74			&[Valuable::as_value(&self.file_descriptor)],
75		));
76	}
77}
cat_dev/fsemul/pcfs/sata_proto/stat_file.rs

cat_dev/fsemul/pcfs/sata_proto/
stat_file.rs
