From f5baaf48e3e82b1caf9f5cd1207d4d6feba3a2e5 Mon Sep 17 00:00:00 2001
From: Thomas Bertschinger <tahbertschinger@gmail.com>
Date: Mon, 15 Jan 2024 23:41:02 -0700
Subject: move Rust sources to top level, C sources into c_src

This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:

$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command

instead of "./bcachefs command".

Building and installing is still:

$ make && make install

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---
 src/bcachefs.rs | 120 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 src/bcachefs.rs

(limited to 'src/bcachefs.rs')

diff --git a/src/bcachefs.rs b/src/bcachefs.rs
new file mode 100644
index 00000000..95f5e1f0
--- /dev/null
+++ b/src/bcachefs.rs
@@ -0,0 +1,120 @@
+mod commands;
+mod key;
+
+use std::ffi::CString;
+
+use commands::cmd_completions::cmd_completions;
+use commands::cmd_list::cmd_list;
+use commands::cmd_mount::cmd_mount;
+use commands::logger::SimpleLogger;
+use bch_bindgen::c;
+
+#[derive(Debug)]
+pub struct ErrnoError(pub errno::Errno);
+impl std::fmt::Display for ErrnoError {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
+        self.0.fmt(f)
+    }
+}
+
+impl std::error::Error for ErrnoError {}
+
+fn handle_c_command(args: Vec<String>, symlink_cmd: Option<&str>) -> i32 {
+    let mut argv: Vec<_> = args.clone();
+
+    let cmd = match symlink_cmd {
+        Some(s) => s.to_string(),
+        None => argv.remove(1),
+    };
+
+    let argc: i32 = argv.len().try_into().unwrap();
+
+    let argv: Vec<_> = argv
+        .iter()
+        .map(|s| CString::new(s.as_str()).unwrap())
+        .collect();
+    let argv: Vec<_> = argv.iter().map(|s| s.as_ptr()).collect();
+    let argv = argv.as_ptr() as *mut *mut i8;
+
+    // The C functions will mutate argv. It shouldn't be used after this block.
+    unsafe {
+        match cmd.as_str() {
+            "--help" => {
+                c::bcachefs_usage();
+                0
+            },
+            "data" => c::data_cmds(argc, argv),
+            "device" => c::device_cmds(argc, argv),
+            "dump" => c::cmd_dump(argc, argv),
+            "format" => c::cmd_format(argc, argv),
+            "fs" => c::fs_cmds(argc, argv),
+            "fsck" => c::cmd_fsck(argc, argv),
+            "list_journal" => c::cmd_list_journal(argc, argv),
+            "kill_btree_node" => c::cmd_kill_btree_node(argc, argv),
+            "migrate" => c::cmd_migrate(argc, argv),
+            "migrate-superblock" => c::cmd_migrate_superblock(argc, argv),
+            "mkfs" => c::cmd_format(argc, argv),
+            "remove-passphrase" => c::cmd_remove_passphrase(argc, argv),
+            "reset-counters" => c::cmd_reset_counters(argc, argv),
+            "set-option" => c::cmd_set_option(argc, argv),
+            "set-passphrase" => c::cmd_set_passphrase(argc, argv),
+            "setattr" => c::cmd_setattr(argc, argv),
+            "show-super" => c::cmd_show_super(argc, argv),
+            "subvolume" => c::subvolume_cmds(argc, argv),
+            "unlock" => c::cmd_unlock(argc, argv),
+            "version" => c::cmd_version(argc, argv),
+
+            #[cfg(fuse)]
+            "fusemount" => c::cmd_fusemount(argc, argv),
+
+            _ => {
+                println!("Unknown command {}", cmd);
+                c::bcachefs_usage();
+                1
+            }
+        }
+    }
+}
+
+fn main() {
+    let args: Vec<String> = std::env::args().collect();
+
+    let symlink_cmd: Option<&str> = if args[0].contains("mkfs") {
+        Some("mkfs")
+    } else if args[0].contains("fsck") {
+        Some("fsck")
+    } else if args[0].contains("mount.fuse") {
+        Some("fusemount")
+    } else if args[0].contains("mount") {
+        Some("mount")
+    } else {
+        None
+    };
+
+    if symlink_cmd.is_none() && args.len() < 2 {
+        println!("missing command");
+        unsafe { c::bcachefs_usage() };
+        std::process::exit(1);
+    }
+
+    unsafe { c::raid_init() };
+
+    log::set_boxed_logger(Box::new(SimpleLogger)).unwrap();
+    log::set_max_level(log::LevelFilter::Warn);
+
+    let cmd = match symlink_cmd {
+        Some(s) => s,
+        None => args[1].as_str(),
+    };
+
+    let ret = match cmd {
+        "completions" => cmd_completions(args[1..].to_vec()),
+        "list" => cmd_list(args[1..].to_vec()),
+        "mount" => cmd_mount(args, symlink_cmd),
+        _ => handle_c_command(args, symlink_cmd),
+    };
+
+    if ret != 0 {
+        std::process::exit(1);
+    }
+}
-- 
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