From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 8E8539632C for ; Mon, 15 Apr 2024 15:17:10 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 62991A5DE for ; Mon, 15 Apr 2024 15:17:10 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS for ; Mon, 15 Apr 2024 15:17:09 +0200 (CEST) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 18F76448AB for ; Mon, 15 Apr 2024 15:17:09 +0200 (CEST) From: Filip Schauer To: pve-devel@lists.proxmox.com Date: Mon, 15 Apr 2024 15:17:01 +0200 Message-Id: <20240415131702.94922-2-f.schauer@proxmox.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240415131702.94922-1-f.schauer@proxmox.com> References: <20240415131702.94922-1-f.schauer@proxmox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SPAM-LEVEL: Spam detection results: 0 AWL -0.076 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: [pve-devel] [PATCH common v2 1/2] add get_device_stat helper subroutine X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Apr 2024 13:17:10 -0000 The get_device_stat subroutine gets a device path, validates it, and returns the file mode and the device identifier. Signed-off-by: Filip Schauer --- src/PVE/Tools.pm | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/src/PVE/Tools.pm b/src/PVE/Tools.pm index 766c809..d1b53e5 100644 --- a/src/PVE/Tools.pm +++ b/src/PVE/Tools.pm @@ -7,7 +7,8 @@ use Date::Format qw(time2str); use Digest::MD5; use Digest::SHA; use Encode; -use Fcntl qw(:DEFAULT :flock); +use Errno qw(ENOENT); +use Fcntl qw(:DEFAULT :flock :mode); use File::Basename; use File::Path qw(make_path); use Filesys::Df (); # don't overwrite our df() @@ -1853,6 +1854,21 @@ sub dev_t_minor($) { return (($dev_t >> 12) & 0xfff00) | ($dev_t & 0xff); } +sub get_device_stat { + my ($path) = @_; + + die "Path is not defined\n" if !defined($path); + + my ($mode, $rdev) = (stat($path))[2, 6]; + die "Device $path does not exist\n" if $! == ENOENT; + die "Error accessing device $path\n" + if (!defined($mode) || !defined($rdev)); + die "$path is not a device\n" + if (!S_ISBLK($mode) && !S_ISCHR($mode)); + + return ($mode, $rdev); +} + # Given an array of array refs [ \[a b c], \[a b b], \[e b a] ] # Returns the intersection of elements as a single array [a b] sub array_intersect { -- 2.39.2