From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate001.proxmox.com (gate001.proxmox.com [45.144.208.40]) by lore.proxmox.com (Postfix) with ESMTPS id DA7CF1FF0ED for ; Fri, 31 Jul 2026 16:25:08 +0200 (CEST) Received: from gate001.proxmox.com (localhost.localdomain [127.0.0.1]) by gate001.proxmox.com (Proxmox) with ESMTP id 37BEF21554; Fri, 31 Jul 2026 16:25:08 +0200 (CEST) From: Robert Obkircher To: pbs-devel@lists.proxmox.com Subject: [PATCH proxmox 1/9] proxmox-sys: add len and as_non_null method to Mmap Date: Fri, 31 Jul 2026 16:21:14 +0200 Message-ID: <20260731142430.289893-2-r.obkircher@proxmox.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260731142430.289893-1-r.obkircher@proxmox.com> References: <20260731142430.289893-1-r.obkircher@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Bm-Milter-Handled: 55990f41-d878-4baa-be0a-ee34c49e34d2 X-Bm-Transport-Timestamp: 1785507894681 X-SPAM-LEVEL: Spam detection results: 0 AWL 0.156 Adjusted score from AWL reputation of From: address DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment (newer systems) RCVD_IN_DNSWL_LOW -0.7 Sender listed at https://www.dnswl.org/, low trust SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Message-ID-Hash: CHA5NX6EHBWR7TJU4WPZQJV2EFGFKURK X-Message-ID-Hash: CHA5NX6EHBWR7TJU4WPZQJV2EFGFKURK X-MailFrom: r.obkircher@proxmox.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list List-Id: Proxmox Backup Server development discussion List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Allow access to the raw parts of the slice without materializing a reference to it. Signed-off-by: Robert Obkircher --- proxmox-sys/src/mmap.rs | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/proxmox-sys/src/mmap.rs b/proxmox-sys/src/mmap.rs index e15ca1db..d54ed6e6 100644 --- a/proxmox-sys/src/mmap.rs +++ b/proxmox-sys/src/mmap.rs @@ -18,6 +18,7 @@ pub struct Mmap { len: usize, } +/// Memory can be used and unmapped on another thread. unsafe impl Send for Mmap where T: Send {} unsafe impl Sync for Mmap where T: Sync {} @@ -68,6 +69,20 @@ impl Mmap { } .map_err(SysError::into_io_error) } + + pub fn is_empty(&self) -> bool { + self.len == 0 + } + + /// Return the length (without creating a reference to the slice) + pub fn len(&self) -> usize { + self.len + } + + /// Return the underlying pointer (without creating a reference to the slice) + pub fn as_non_null(&self) -> NonNull { + self.data + } } impl std::ops::Deref for Mmap { -- 2.47.3