feat(rust/commands): introduce Rust-driven `subvolume` sub-CLI

[bcachefs-tools-debian] / src / commands / cmd_subvolume.rs

diff --git a/src/commands/cmd_subvolume.rs b/src/commands/cmd_subvolume.rs
new file mode 100644 (file)
index 0000000..57c679a
--- /dev/null
+++ b/src/commands/cmd_subvolume.rs
@@ -0,0 +1,63 @@
+use std::path::PathBuf;
+
+use bch_bindgen::c::BCH_SUBVOL_SNAPSHOT_RO;
+use clap::{Parser, Subcommand};
+
+use crate::wrappers::handle::BcachefsHandle;
+
+#[derive(Parser, Debug)]
+pub struct Cli {
+    #[command(subcommand)]
+    subcommands: Subcommands,
+}
+
+/// Subvolumes-related commands
+#[derive(Subcommand, Debug)]
+enum Subcommands {
+    Create {
+        /// Paths
+        targets: Vec<PathBuf>
+    },
+    Delete {
+        /// Path
+        target: PathBuf
+    },
+    Snapshot {
+        /// Make snapshot read only
+        #[arg(long, short = 'r')]
+        read_only: bool,
+        source: PathBuf,
+        dest: PathBuf
+    }
+}
+
+pub fn cmd_subvolumes(argv: Vec<String>) -> i32 {
+    let args = Cli::parse_from(argv);
+
+    match args.subcommands {
+        Subcommands::Create { targets } => {
+            for target in targets {
+                if let Some(dirname) = target.parent() {
+                    let fs = unsafe { BcachefsHandle::open(dirname) };
+                    fs.create_subvolume(target).expect("Failed to create the subvolume");
+                }
+            }
+        }
+        ,
+        Subcommands::Delete { target } => {
+            if let Some(dirname) = target.parent() {
+                let fs = unsafe { BcachefsHandle::open(dirname) };
+                fs.delete_subvolume(target).expect("Failed to delete the subvolume");
+            }
+        },
+        Subcommands::Snapshot { read_only, source, dest } => {
+            if let Some(dirname) = dest.parent() {
+                let fs = unsafe { BcachefsHandle::open(dirname) };
+
+                fs.snapshot_subvolume(if read_only { BCH_SUBVOL_SNAPSHOT_RO } else { 0x0 }, source, dest).expect("Failed to snapshot the subvolume");
+            }
+        }
+    }
+
+    0
+}