git.sesse.net Git - bcachefs-tools-debian/blob - src/commands/cmd_subvolume.rs

   1 use std::path::PathBuf;
   2
   3 use bch_bindgen::c::BCH_SUBVOL_SNAPSHOT_RO;
   4 use clap::{Parser, Subcommand};
   5
   6 use crate::wrappers::handle::BcachefsHandle;
   7
   8 #[derive(Parser, Debug)]
   9 pub struct Cli {
  10     #[command(subcommand)]
  11     subcommands: Subcommands,
  12 }
  13
  14 /// Subvolumes-related commands
  15 #[derive(Subcommand, Debug)]
  16 enum Subcommands {
  17     Create {
  18         /// Paths
  19         targets: Vec<PathBuf>
  20     },
  21     Delete {
  22         /// Path
  23         target: PathBuf
  24     },
  25     #[command(allow_missing_positional = true)]
  26     Snapshot {
  27         /// Make snapshot read only
  28         #[arg(long, short = 'r')]
  29         read_only: bool,
  30         source: Option<PathBuf>,
  31         dest: PathBuf
  32     }
  33 }
  34
  35 pub fn cmd_subvolumes(argv: Vec<String>) -> i32 {
  36     let args = Cli::parse_from(argv);
  37
  38     match args.subcommands {
  39         Subcommands::Create { targets } => {
  40             for target in targets {
  41                 if let Some(dirname) = target.parent() {
  42                     let fs = unsafe { BcachefsHandle::open(dirname) };
  43                     fs.create_subvolume(target).expect("Failed to create the subvolume");
  44                 }
  45             }
  46         }
  47         ,
  48         Subcommands::Delete { target } => {
  49             if let Some(dirname) = target.parent() {
  50                 let fs = unsafe { BcachefsHandle::open(dirname) };
  51                 fs.delete_subvolume(target).expect("Failed to delete the subvolume");
  52             }
  53         },
  54         Subcommands::Snapshot { read_only, source, dest } => {
  55             if let Some(dirname) = dest.parent() {
  56                 let dot = PathBuf::from(".");
  57                 let dir = if dirname.as_os_str().is_empty() { &dot } else { dirname };
  58                 let fs = unsafe { BcachefsHandle::open(dir) };
  59
  60                 fs.snapshot_subvolume(if read_only { BCH_SUBVOL_SNAPSHOT_RO } else { 0x0 }, source, dest).expect("Failed to snapshot the subvolume");
  61             }
  62         }
  63     }
  64
  65     0
  66 }