From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) by lore.proxmox.com (Postfix) with ESMTPS id 25EF61FF3A0 for ; Tue, 14 May 2024 12:40:07 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id C5C3E507B; Tue, 14 May 2024 12:40:15 +0200 (CEST) From: Christian Ebner To: pbs-devel@lists.proxmox.com Date: Tue, 14 May 2024 12:34:16 +0200 Message-Id: <20240514103421.289431-61-c.ebner@proxmox.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240514103421.289431-1-c.ebner@proxmox.com> References: <20240514103421.289431-1-c.ebner@proxmox.com> MIME-Version: 1.0 X-SPAM-LEVEL: Spam detection results: 0 AWL 0.026 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Subject: [pbs-devel] [PATCH v6 proxmox-backup 60/65] client: pxar: allow to restore prelude to optional path X-BeenThere: pbs-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox Backup Server development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Proxmox Backup Server development discussion Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: pbs-devel-bounces@lists.proxmox.com Sender: "pbs-devel" Pxar archives allow to store additional information in a prelude entry since pxar format version 2. Add an optional parameter to `pxar` and `proxmox-backup-client` to specify the path to restore the prelude to and pass this to the archive extraction by extending the `PxarExtractOptions` by a corresponding field. If none is given, the prelude is simply skipped during restore. Signed-off-by: Christian Ebner --- pbs-client/src/pxar/extract.rs | 26 +++++++++++++++++++++++--- proxmox-backup-client/src/main.rs | 12 +++++++++++- pxar-bin/src/main.rs | 6 ++++++ 3 files changed, 40 insertions(+), 4 deletions(-) diff --git a/pbs-client/src/pxar/extract.rs b/pbs-client/src/pxar/extract.rs index 23b2f6ba5..0fa3d48d7 100644 --- a/pbs-client/src/pxar/extract.rs +++ b/pbs-client/src/pxar/extract.rs @@ -2,7 +2,8 @@ use std::collections::HashMap; use std::ffi::{CStr, CString, OsStr, OsString}; -use std::io; +use std::fs::OpenOptions; +use std::io::{self, Write}; use std::os::unix::ffi::OsStrExt; use std::os::unix::io::{AsRawFd, FromRawFd, RawFd}; use std::path::{Path, PathBuf}; @@ -37,6 +38,7 @@ pub struct PxarExtractOptions<'a> { pub allow_existing_dirs: bool, pub overwrite_flags: OverwriteFlags, pub on_error: Option, + pub prelude_path: Option, } bitflags! { @@ -125,8 +127,26 @@ where // we use this to keep track of our directory-traversal decoder.enable_goodbye_entries(true); - let (root, _, _) = handle_root_with_optional_format_version_prelude(&mut decoder) - .context("error reading pxar archive")?; + let (root, _version, prelude) = + handle_root_with_optional_format_version_prelude(&mut decoder) + .context("error reading pxar archive")?; + + if let Some(ref path) = options.prelude_path { + if let Some(entry) = prelude { + let mut prelude_file = OpenOptions::new() + .create(true) + .write(true) + .open(path) + .with_context(|| format!("error creating prelude file '{path:?}'"))?; + if let pxar::EntryKind::Prelude(ref prelude) = entry.kind() { + prelude_file.write_all(prelude.as_os_str().as_bytes())?; + } else { + log::info!("unexpected entry kind for prelude"); + } + } else { + log::info!("No prelude entry found, skip prelude restore."); + } + } if !root.is_dir() { bail!("pxar archive does not start with a directory entry!"); diff --git a/proxmox-backup-client/src/main.rs b/proxmox-backup-client/src/main.rs index dccea230e..1423e6f0f 100644 --- a/proxmox-backup-client/src/main.rs +++ b/proxmox-backup-client/src/main.rs @@ -1432,7 +1432,12 @@ We do not extract '.pxar' archives when writing to standard output. description: "ignore errors that occur during device node extraction", optional: true, default: false, - } + }, + "restore-prelude-to": { + description: "Path to restore prelude to, (pxar v2 archives only).", + type: String, + optional: true, + }, } } )] @@ -1593,12 +1598,17 @@ async fn restore( overwrite_flags.insert(pbs_client::pxar::OverwriteFlags::all()); } + let prelude_path = param["restore-prelude-to"] + .as_str() + .map(|path| PathBuf::from(path)); + let options = pbs_client::pxar::PxarExtractOptions { match_list: &[], extract_match_default: true, allow_existing_dirs, overwrite_flags, on_error, + prelude_path, }; let mut feature_flags = pbs_client::pxar::Flags::DEFAULT; diff --git a/pxar-bin/src/main.rs b/pxar-bin/src/main.rs index 85f96ad2c..2a5403467 100644 --- a/pxar-bin/src/main.rs +++ b/pxar-bin/src/main.rs @@ -126,6 +126,10 @@ fn extract_archive_from_reader( description: "'ppxar' payload input data file to restore split archive.", optional: true, }, + "restore-prelude-to": { + description: "Path to restore pxar archive prelude to.", + optional: true, + }, }, }, )] @@ -149,6 +153,7 @@ fn extract_archive( no_sockets: bool, strict: bool, payload_input: Option, + restore_prelude_to: Option, ) -> Result<(), Error> { let mut feature_flags = Flags::DEFAULT; if no_xattrs { @@ -222,6 +227,7 @@ fn extract_archive( overwrite_flags, extract_match_default, on_error, + prelude_path: restore_prelude_to.map(|path| PathBuf::from(path)), }; if archive == "-" { -- 2.39.2 _______________________________________________ pbs-devel mailing list pbs-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pbs-devel