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/*
* Copyright (c) 2021, Luca Fulchir <luker@fenrirproject.org>
*
* This file is part of dfim.
*
* dfim is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* dfim is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with dfim. If not, see <https://www.gnu.org/licenses/>.
*/
use super::{CheckResult, CheckStatus, NextTarget};
use crate::config::target;
// we could use lifetimes here instead of copying stuff, but
// - we should have realatively low usage anyway
// - lifetimes can get messy
// - we don't have enough modules to fully know how lifetimes will impact the
// code.
// so for now, clone
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impl GPT {
/// generate a standard config that can be checked easily
/// so that we can compare the config GPT with the device GPT
fn generate_standard(&self, dev: &::udev::Device) -> target::gpt::GPT {
let mut ret = target::gpt::GPT {
id: self.0.id.clone(),
guid: self.0.guid.clone(),
partitions: Vec::with_capacity(self.0.partitions.len()),
};
// we now have to recalculate the partition actual size,
// and move them all to LBA
// create (but never write) a new GPT table
// and work with that to translate to LBA
let gpt = ::gpt::GptConfig::new().writable(false);
let node = match dev.devnode() {
Some(node) => node,
None => return ret,
};
let mut disk = match gpt.open(node) {
Ok(disk) => disk,
Err(_) => {
return ret;
}
};
let mut new_partitions = ::std::collections::BTreeMap::<
u32,
::gpt::partition::Partition,
>::new();
disk.update_partitions(new_partitions).unwrap();
for p in &self.0.partitions {
let p_guid = match p.part_uuid {
target::gpt::PartUUID::Random => ::uuid::Uuid::new_v4(),
target::gpt::PartUUID::UUID(u) => u,
};
if let target::gpt::PartId::UUID(p_type) = p.part_type {
let uuid_str = p_type
.to_simple()
.encode_lower(&mut ::uuid::Uuid::encode_buffer())
.to_owned();
let mut new_p = ::gpt::partition::Partition {
part_type_guid: ::gpt::partition_types::Type {
guid: &uuid_str,
os: ::gpt::partition_types::OperatingSystem::Custom(
"whatever".to_owned(),
),
},
part_guid: p_guid,
first_lba: 0,
last_lba: 0,
flags: p.flag_bits(),
name: p.label.clone(),
};
}
}
ret
}
/*
/// get the current drevice GPT. make it standard enough that we can
/// easily check with what comes from generate_standard(dev)
fn get_current(&self, dev: &::udev::Device) -> Result<target::gpt::GPT, ::std::io::Error> {
}
*/
}
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impl super::TargetApply for GPT {
fn check(
&mut self,
logger: &::slog::Logger,
cfg: &crate::state::cfg::Cfg,
dev: &::udev::Device,
) -> Result<CheckResult, ::std::io::Error> {
let node = match dev.devnode() {
Some(node) => ::std::path::Path::new(node),
None => {
::slog::error!(
logger,
"GPT: device \"{:?}\" does not have a corresponding node",
dev.syspath()
);
return Err(::std::io::Error::new(
::std::io::ErrorKind::NotFound,
"GPT: device does not have a node",
));
}
};
let cfg = ::gpt::GptConfig::new().writable(false);
if let Ok(true) = crate::state::is_empty(dev) {
return Ok(CheckResult {
status: CheckStatus::CanBeApplied,
// FIXME
next: Vec::new(),
});
}
let disk = match cfg.open(node) {
Ok(disk) => disk,
Err(e) => {
::slog::error!(
logger,
"GPT: device \"{:?}\" node \"{:?}\": can't open",
dev.syspath(),
node
);
return Err(e);
}
};
let disk_guid = disk.guid();
if let target::gpt::GptUuid::UUID(uuid) = self.0.guid {
if *disk_guid != uuid {
::slog::debug!(
logger,
"GPT: device \"{:?}\" wrong guid. Got: {:?} Expected: {:?}",
dev.syspath(),
disk_guid,
uuid
);
return Ok(CheckResult {
status: CheckStatus::DoNotApply,
next: Vec::new(),
});
}
}
let disk_part = disk.partitions();
if disk_part.len() != self.0.partitions.len() {
::slog::debug!(
logger,
"GPT: device \"{:?}\" partitions don't match",
dev.syspath()
);
return Ok(CheckResult {
status: CheckStatus::DoNotApply,
next: Vec::new(),
});
}
for (idx, p) in disk_part {
match self.0.partitions.iter().find(|x| x.number == Some(*idx)) {
None => {
::slog::debug!(
logger,
"GPT: device \"{:?}\" partition {} does not match",
dev.syspath(),
idx,
);
return Ok(CheckResult {
status: CheckStatus::DoNotApply,
next: Vec::new(),
});
}
Some(self_p) => {
// TODO
}
}
}
Err(::std::io::Error::new(
::std::io::ErrorKind::Other,
"Exec: nonZero exit status",
))
}
fn apply(
&mut self,
logger: &::slog::Logger,
cfg: &crate::state::cfg::Cfg,
cfg_dev: &crate::config::device::Device,
dev: &::udev::Device,
) -> Result<Vec<NextTarget>, ::std::io::Error> {
Err(::std::io::Error::new(
::std::io::ErrorKind::Other,
"Exec: nonZero exit status",
))
}
}