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use partition_identity::{PartitionID, PartitionSource};
use std::ffi::{OsStr, OsString};
use std::path::{Path, PathBuf};
use disk_types::FileSystem;
#[derive(Debug, PartialEq)]
pub struct BlockInfo<'a> {
pub uid: PartitionID,
mount: Option<PathBuf>,
pub fs: &'static str,
pub options: &'a str,
pub dump: bool,
pub pass: bool,
}
impl<'a> BlockInfo<'a> {
pub fn new(
uid: PartitionID,
fs: FileSystem,
target: Option<&Path>,
options: &'a str,
) -> Self {
BlockInfo {
uid,
mount: if fs == FileSystem::Swap {
None
} else {
Some(target.expect("unable to get block info due to lack of target").to_path_buf())
},
fs: match fs {
FileSystem::Fat16 | FileSystem::Fat32 => "vfat",
FileSystem::Swap => "swap",
_ => fs.into(),
},
options,
dump: false,
pass: false,
}
}
pub fn write_entry(&self, fstab: &mut OsString) {
let mount_variant = match self.uid.variant {
PartitionSource::ID => "ID=",
PartitionSource::Label => "LABEL=",
PartitionSource::PartLabel => "PARTLABEL=",
PartitionSource::PartUUID => "PARTUUID=",
PartitionSource::Path => "",
PartitionSource::UUID => "UUID=",
};
fstab.push(mount_variant);
fstab.push(&self.uid.id);
fstab.push(" ");
fstab.push(self.mount());
fstab.push(" ");
fstab.push(&self.fs);
fstab.push(" ");
fstab.push(&self.options);
fstab.push(" ");
fstab.push(if self.dump { "1" } else { "0" });
fstab.push(" ");
fstab.push(if self.pass { "1" } else { "0" });
fstab.push("\n");
}
pub fn mount(&self) -> &OsStr {
self.mount
.as_ref()
.map_or(OsStr::new("none"), |path| path.as_os_str())
}
pub fn get_partition_id(path: &Path, fs: FileSystem) -> Option<PartitionID> {
if fs == FileSystem::Fat16 || fs == FileSystem::Fat32 {
PartitionID::get_partuuid(path)
} else {
PartitionID::get_uuid(path)
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::ffi::OsStr;
#[test]
fn fstab_entries() {
let swap_id = PartitionID { id: "SWAP".into(), variant: PartitionSource::UUID };
let swap = BlockInfo::new(swap_id, FileSystem::Swap, None, "sw");
let efi_id = PartitionID { id: "EFI".into(), variant: PartitionSource::PartUUID };
let efi = BlockInfo::new(efi_id, FileSystem::Fat32, Some(Path::new("/boot/efi")), "defaults");
let root_id = PartitionID { id: "ROOT".into(), variant: PartitionSource::UUID };
let root = BlockInfo::new(root_id, FileSystem::Ext4, Some(Path::new("/")), "defaults");
let fstab = &mut OsString::new();
swap.write_entry(fstab);
efi.write_entry(fstab);
root.write_entry(fstab);
assert_eq!(
*fstab,
OsString::from(r#"UUID=SWAP none swap sw 0 0
PARTUUID=EFI /boot/efi vfat defaults 0 0
UUID=ROOT / ext4 defaults 0 0
"#)
);
}
#[test]
fn block_info_swap() {
let id = PartitionID {
variant: PartitionSource::UUID,
id: "TEST".to_owned()
};
let swap = BlockInfo::new(id, FileSystem::Swap, None, "sw");
assert_eq!(
swap,
BlockInfo {
uid: PartitionID {
variant: PartitionSource::UUID,
id: "TEST".to_owned()
},
mount: None,
fs: "swap",
options: "sw",
dump: false,
pass: false,
}
);
assert_eq!(swap.mount(), OsStr::new("none"));
}
#[test]
fn block_info_efi() {
let id = PartitionID {
variant: PartitionSource::PartUUID,
id: "TEST".to_owned()
};
let efi = BlockInfo::new(id, FileSystem::Fat32, Some(Path::new("/boot/efi")), "defaults");
assert_eq!(
efi,
BlockInfo {
uid: PartitionID {
variant: PartitionSource::PartUUID,
id: "TEST".to_owned()
},
mount: Some(PathBuf::from("/boot/efi")),
fs: "vfat",
options: "defaults",
dump: false,
pass: false,
}
);
assert_eq!(efi.mount(), OsStr::new("/boot/efi"));
}
#[test]
fn block_info_root() {
let id = PartitionID {
variant: PartitionSource::UUID,
id: "TEST".to_owned()
};
let root = BlockInfo::new(id, FileSystem::Ext4, Some(Path::new("/")), "defaults");
assert_eq!(
root,
BlockInfo {
uid: PartitionID {
variant: PartitionSource::UUID,
id: "TEST".to_owned()
},
mount: Some(PathBuf::from("/")),
fs: FileSystem::Ext4.into(),
options: "defaults",
dump: false,
pass: false,
}
);
assert_eq!(root.mount(), OsStr::new("/"));
}
}