From 1facd5558cb6b166eab8d46682ea4aa1477223cf Mon Sep 17 00:00:00 2001 From: pjht Date: Sun, 9 Jun 2024 18:39:09 -0500 Subject: [PATCH] Set up enough to mount initrd as the root --- Cargo.lock | 245 ++++++++++++++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 2 + src/main.rs | 37 ++++++-- 3 files changed, 279 insertions(+), 5 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 76c7331..7a66107 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2,6 +2,12 @@ # It is not intended for manual editing. version = 3 +[[package]] +name = "arrayvec" +version = "0.5.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b" + [[package]] name = "autocfg" version = "1.3.0" @@ -14,11 +20,50 @@ version = "2.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1" +[[package]] +name = "byteorder" +version = "1.5.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b" + +[[package]] +name = "cfg-if" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd" + +[[package]] +name = "hexdump" +version = "0.1.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "cf31ab66ed8145a1c7427bd8e9b42a6131bd74ccf444f69b9e620c2e73ded832" +dependencies = [ + "arrayvec", +] + [[package]] name = "init" version = "0.1.0" dependencies = [ + "hexdump", "tar-no-std", + "vfs_rpc", +] + +[[package]] +name = "libc" +version = "0.2.155" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "97b3888a4aecf77e811145cadf6eef5901f4782c53886191b2f693f24761847c" + +[[package]] +name = "lock_api" +version = "0.4.12" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "07af8b9cdd281b7915f413fa73f29ebd5d55d0d3f0155584dade1ff18cea1b17" +dependencies = [ + "autocfg", + "scopeguard", ] [[package]] @@ -42,6 +87,127 @@ dependencies = [ "autocfg", ] +[[package]] +name = "parking_lot" +version = "0.12.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f1bf18183cf54e8d6059647fc3063646a1801cf30896933ec2311622cc4b9a27" +dependencies = [ + "lock_api", + "parking_lot_core", +] + +[[package]] +name = "parking_lot_core" +version = "0.9.10" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "1e401f977ab385c9e4e3ab30627d6f26d00e2c73eef317493c4ec6d468726cf8" +dependencies = [ + "cfg-if", + "libc", + "redox_syscall", + "smallvec", + "windows-targets", +] + +[[package]] +name = "paste" +version = "1.0.15" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a" + +[[package]] +name = "proc-macro2" +version = 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"registry+https://github.com/rust-lang/crates.io-index" +checksum = "52e599a477cf9840e92f2cde9a7189e67b42c57532749bf90aea6ec10facd4db" +dependencies = [ + "byteorder", + "rmp", + "serde", +] + +[[package]] +name = "scopeguard" +version = "1.2.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49" + +[[package]] +name = "serde" +version = "1.0.203" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "7253ab4de971e72fb7be983802300c30b5a7f0c2e56fab8abfc6a214307c0094" +dependencies = [ + "serde_derive", +] + +[[package]] +name = "serde_derive" +version = "1.0.203" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "500cbc0ebeb6f46627f50f3f5811ccf6bf00643be300b4c3eabc0ef55dc5b5ba" +dependencies = [ + "proc-macro2", + "quote", + "syn", +] + +[[package]] +name = "smallvec" +version = "1.13.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "3c5e1a9a646d36c3599cd173a41282daf47c44583ad367b8e6837255952e5c67" + +[[package]] +name = "syn" +version = "2.0.66" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c42f3f41a2de00b01c0aaad383c5a45241efc8b2d1eda5661812fda5f3cdcff5" +dependencies = [ + "proc-macro2", + "quote", + "unicode-ident", +] + [[package]] name = "tar-no-std" version = "0.3.1" @@ -53,3 +219,82 @@ dependencies = [ "memchr", "num-traits", ] + +[[package]] +name = "unicode-ident" +version = "1.0.12" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b" + +[[package]] +name = "vfs_rpc" +version = "0.1.0" +dependencies = [ + "parking_lot", + "rmp-serde", + "serde", +] + +[[package]] +name = "windows-targets" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "6f0713a46559409d202e70e28227288446bf7841d3211583a4b53e3f6d96e7eb" +dependencies = [ + "windows_aarch64_gnullvm", + "windows_aarch64_msvc", + "windows_i686_gnu", + "windows_i686_gnullvm", + "windows_i686_msvc", + "windows_x86_64_gnu", + "windows_x86_64_gnullvm", + "windows_x86_64_msvc", +] + +[[package]] +name = "windows_aarch64_gnullvm" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "7088eed71e8b8dda258ecc8bac5fb1153c5cffaf2578fc8ff5d61e23578d3263" + +[[package]] +name = "windows_aarch64_msvc" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9985fd1504e250c615ca5f281c3f7a6da76213ebd5ccc9561496568a2752afb6" + +[[package]] +name = "windows_i686_gnu" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "88ba073cf16d5372720ec942a8ccbf61626074c6d4dd2e745299726ce8b89670" + +[[package]] +name = "windows_i686_gnullvm" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "87f4261229030a858f36b459e748ae97545d6f1ec60e5e0d6a3d32e0dc232ee9" + +[[package]] +name = "windows_i686_msvc" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "db3c2bf3d13d5b658be73463284eaf12830ac9a26a90c717b7f771dfe97487bf" + +[[package]] +name = "windows_x86_64_gnu" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4e4246f76bdeff09eb48875a0fd3e2af6aada79d409d33011886d3e1581517d9" + +[[package]] +name = "windows_x86_64_gnullvm" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "852298e482cd67c356ddd9570386e2862b5673c85bd5f88df9ab6802b334c596" + +[[package]] +name = "windows_x86_64_msvc" +version = "0.52.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0" diff --git a/Cargo.toml b/Cargo.toml index 87778c4..b41931b 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -6,7 +6,9 @@ edition = "2021" # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html [dependencies] +hexdump = "0.1.2" tar-no-std = "0.3.1" +vfs_rpc = { version = "0.1.0", path = "../vfs/vfs_rpc" } [profile.dev] panic = "abort" diff --git a/src/main.rs b/src/main.rs index afe3e1c..7ecd258 100644 --- a/src/main.rs +++ b/src/main.rs @@ -3,16 +3,43 @@ use std::os::mikros::loader::Loader; use std::os::mikros::syscalls::{get_initrd, new_process}; +use std::path::Path; use tar_no_std::TarArchiveRef; fn main() { let initrd = TarArchiveRef::new(get_initrd()).unwrap(); - let vfs = + let vfs_pid = run_initrd_proc(&initrd, "bin/vfs"); + println!("[INIT] Started the VFS"); + run_initrd_proc(&initrd, "bin/devfs"); + println!("[INIT] Started the devfs"); + run_initrd_proc(&initrd, "bin/tarfs"); + println!("[INIT] Started the tar FS driver"); + run_initrd_proc(&initrd, "bin/initrd_driver"); + println!("[INIT] Started the initrd pseudodevice driver"); + let vfs_client = vfs_rpc::Client::new(vfs_pid); + loop { + if vfs_client.mount(Path::new("/dummy"), "devfs", Path::new("/dev")).is_ok() { + break; + } + } + println!("[INIT] Mounted /dev"); + loop { + if vfs_client.mount(Path::new("/dev/initrd"), "tarfs", Path::new("/")).is_ok() { + break; + } + } + println!("[INIT] Mounted initrd as root"); + println!("/test_file.txt:"); + print!("{}", std::fs::read_to_string("/test_file.txt").unwrap()) +} + +fn run_initrd_proc(initrd: &TarArchiveRef, path: &str) -> u64 { + let proc = initrd .entries() - .find(|entry| entry.filename().as_str().unwrap() == "bin/vfs") - .expect("vfs not found") + .find(|entry| entry.filename().as_str().unwrap() == path) + .expect(&format!("{} not found", path)) .data(); - let (space, entry) = Loader::load(&vfs); - new_process(entry as _, space).unwrap(); + let (space, entry) = Loader::load(&proc); + new_process(entry as _, space).unwrap() }