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     #[command(visible_aliases = ["new"])]
  18     Create {
  19         /// Paths
  20         targets: Vec<PathBuf>
  21     },
  22
  23     #[command(visible_aliases = ["del"])]
  24     Delete {
  25         /// Path
  26         target: PathBuf
  27     },
  28
  29     #[command(allow_missing_positional = true, visible_aliases = ["snap"])]
  30     Snapshot {
  31         /// Make snapshot read only
  32         #[arg(long, short)]
  33         read_only: bool,
  34         source: Option<PathBuf>,
  35         dest: PathBuf
  36     }
  37 }
  38
  39 pub fn cmd_subvolumes(argv: Vec<String>) -> i32 {
  40     let args = Cli::parse_from(argv);
  41
  42     match args.subcommands {
  43         Subcommands::Create { targets } => {
  44             for target in targets {
  45                 if let Some(dirname) = target.parent() {
  46                     let fs = unsafe { BcachefsHandle::open(dirname) };
  47                     fs.create_subvolume(target).expect("Failed to create the subvolume");
  48                 }
  49             }
  50         }
  51         ,
  52         Subcommands::Delete { target } => {
  53             if let Some(dirname) = target.parent() {
  54                 let fs = unsafe { BcachefsHandle::open(dirname) };
  55                 fs.delete_subvolume(target).expect("Failed to delete the subvolume");
  56             }
  57         },
  58         Subcommands::Snapshot { read_only, source, dest } => {
  59             if let Some(dirname) = dest.parent() {
  60                 let dot = PathBuf::from(".");
  61                 let dir = if dirname.as_os_str().is_empty() { &dot } else { dirname };
  62                 let fs = unsafe { BcachefsHandle::open(dir) };
  63
  64                 fs.snapshot_subvolume(if read_only { BCH_SUBVOL_SNAPSHOT_RO } else { 0x0 }, source, dest).expect("Failed to snapshot the subvolume");
  65             }
  66         }
  67     }
  68
  69     0
  70 }