1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

// Copyright 2020 John Millikin and the rust-fuse contributors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// SPDX-License-Identifier: Apache-2.0

use crate::protocol::common;
use crate::protocol::node;
use crate::protocol::prelude::*;

#[cfg(test)]
mod mknod_test;

// MknodRequest {{{

pub struct MknodRequest<'a> {
	header: &'a fuse_kernel::fuse_in_header,
	name: &'a CStr,
	mode: u32,
	rdev: u32,
	umask: u32,
}

impl MknodRequest<'_> {
	pub fn node_id(&self) -> u64 {
		self.header.nodeid
	}

	pub fn name(&self) -> &CStr {
		self.name
	}

	pub fn mode(&self) -> u32 {
		self.mode
	}

	pub fn rdev(&self) -> u32 {
		self.rdev
	}

	pub fn umask(&self) -> u32 {
		self.umask
	}
}

#[repr(C)]
pub(crate) struct fuse_mknod_in_v7p1 {
	pub mode: u32,
	pub rdev: u32,
}

impl<'a> fuse_io::DecodeRequest<'a> for MknodRequest<'a> {
	fn decode_request(
		mut dec: fuse_io::RequestDecoder<'a>,
	) -> io::Result<Self> {
		let header = dec.header();
		debug_assert!(header.opcode == fuse_kernel::FUSE_MKNOD);

		if dec.version().minor() < 12 {
			let raw: &fuse_mknod_in_v7p1 = dec.next_sized()?;
			let name = dec.next_cstr()?;
			return Ok(Self {
				header,
				name,
				mode: raw.mode,
				rdev: raw.rdev,
				umask: 0,
			});
		}

		let raw: &fuse_kernel::fuse_mknod_in = dec.next_sized()?;
		let name = dec.next_cstr()?;
		Ok(Self {
			header,
			name,
			mode: raw.mode,
			rdev: raw.rdev,
			umask: raw.umask,
		})
	}
}

// }}}

// MknodResponse {{{

pub struct MknodResponse<'a> {
	phantom: PhantomData<&'a ()>,
	raw: fuse_kernel::fuse_entry_out,
}

impl MknodResponse<'_> {
	pub fn new() -> Self {
		MknodResponse {
			phantom: PhantomData,
			raw: Default::default(),
		}
	}

	pub fn node(&self) -> &node::Node {
		node::Node::new_ref(&self.raw)
	}

	pub fn node_mut(&mut self) -> &mut node::Node {
		node::Node::new_ref_mut(&mut self.raw)
	}

	entry_out_methods!(raw);
}

impl fmt::Debug for MknodResponse<'_> {
	fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
		fmt.debug_struct("MknodResponse")
			.field("node_id", &self.node_id())
			.field("cache_duration", &self.cache_duration())
			.field("attr", self.attr())
			.field("attr_cache_duration", &self.attr_cache_duration())
			.finish()
	}
}

impl fuse_io::EncodeResponse for MknodResponse<'_> {
	fn encode_response<'a, Chan: fuse_io::Channel>(
		&'a self,
		enc: fuse_io::ResponseEncoder<Chan>,
	) -> std::io::Result<()> {
		common::encode_entry_out(enc, &self.raw)
	}
}

// }}}