work with disk devices (f0f64cbc) · Commits · Elphel / elphel-web-393

src/eyesis4pi/eyesis4pi_interface.php

+18 −4

Original line number	Original line	Diff line number	Diff line
	@@ -21,6 +21,7 @@
	*/		*/

	include 'include/response.php';		include 'include/response.php';
			include 'include/devices.php';

	$cmd = "donothing";		$cmd = "donothing";
	if (isset($_GET['cmd']))		if (isset($_GET['cmd']))
	@@ -31,6 +32,7 @@ else if (isset($argv[1]))
	#hardcoded for eyesis4pi		#hardcoded for eyesis4pi
	$symlink = "/www/pages/ssd";		$symlink = "/www/pages/ssd";
	$mountpoint = "/mnt/sda1";		$mountpoint = "/mnt/sda1";
			$camogmdisk = "/home/root/camogm.disk";

	switch($cmd){		switch($cmd){
	case "symlink":		case "symlink":
	@@ -38,8 +40,20 @@ switch($cmd){
	die(symlink($mountpoint,$symlink));		die(symlink($mountpoint,$symlink));
	break;		break;
	case "free_space":		case "free_space":
	if ($_GET['mountpoint']=="/mnt/sda2"){		// /dev/sda2 is not a mountpoint but a device because it does not have a file system
			if ($_GET['mountpoint']=="/dev/sda2"){
			//root@elphel393:~# cat /home/root/camogm.disk
			//Device Start LBA Current LBA End LBA
			///dev/sda2 195334335 545641716 976768065

			if (!is_file($camogmdisk)){

			}else{

			}

	respond_xml("test");		respond_xml("test");

	//unpartitioned area		//unpartitioned area
	}else{		}else{
	if (is_dir($mountpoint)) $res = disk_free_space($mountpoint);		if (is_dir($mountpoint)) $res = disk_free_space($mountpoint);

src/php_top/Makefile

+2 −1

Original line number	Original line	Diff line number	Diff line
	@@ -22,7 +22,8 @@ PHP_SCRIPTS=i2c.php \
	PHPINCLUDES=i2c_include.php \		PHPINCLUDES=i2c_include.php \
	show_source_include.php \		show_source_include.php \
	parallel_requests.php \		parallel_requests.php \
	response.php		response.php \
			devices.php

	all:		all:
	@echo "make all in src"		@echo "make all in src"

src/php_top/devices.php

0 → 100644

+106 −0

Original line number	Original line	Diff line number	Diff line
			<?php
			/*
			!**************************************************************************
			*! FILE NAME : devices.php
			*! DESCRIPTION: get devices info
			*! Copyright (C) 2016 Elphel, Inc.
			*! --------------------------------------------------------------------------
			*! This program is free software: you can redistribute it and/or modify
			*! it under the terms of the GNU General Public License as published by
			*! the Free Software Foundation, either version 3 of the License, or
			*! (at your option) any later version.
			*!
			*! This program is distributed in the hope that it will be useful,
			*! but WITHOUT ANY WARRANTY; without even the implied warranty of
			*! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
			*! GNU General Public License for more details.
			*!
			*! You should have received a copy of the GNU General Public License
			*! along with this program. If not, see <http://www.gnu.org/licenses/>.
			*! --------------------------------------------------------------------------
			*/

			/** Get a list of suitable partitions. The list will contain SATA devices only and
			* will have the following format: "name" => "size_in_blocks".
			*/
			function get_partitions()
			{
			$names = array();
			$regexp = '/([0-9]+) +(sd[a-z0-9]+$)/';
			exec("cat /proc/partitions", $partitions);

			// the first two elements of an array are table header and empty line delimiter, skip them
			for ($i = 2; $i < count($partitions); $i++) {
			// select SATA devices only
			if (preg_match($regexp, $partitions[$i], $name) == 1) {
			$names[$name[2]] = $name[1];
			$j++;
			}
			}
			return $names;
			}

			/** Get a list of disk devices which have file system and can be mounted. This function
			* uses 'blkid' command from busybox.
			*/
			function get_mnt_dev()
			{
			$partitions = get_partitions();
			$devices = array();
			$fs_types = array();
			foreach ($partitions as $partition => $size) {
			$res = array();
			$dev = "/dev/" . $partition;
			exec("blkid " . $dev, $res);
			if (!empty($res)) {
			$devices[$i] = preg_replace('/: +.*/', "", $res[0]);
			if (preg_match('/(?<=TYPE=")[a-z0-9]+(?=")/', $res[0], $fs) == 1)
			$fs_types[$i] = $fs[0];
			else
			$fs_types[$i] = "none";
			$i++;
			}
			}

			return array("devices" => $devices, "types" => $fs_types);
			}

			/** Get a list of devices whithout file system which can be used for raw disk storage from camogm. */
			function get_raw_dev()
			{
			$j = 0;
			$ret = get_mnt_dev();
			$devices = $ret["devices"];
			$types = $ret["types"];

			$names = get_partitions();

			// filter out partitions with file system
			$i = 0;
			$raw_devices = array();

			foreach ($names as $name => $size) {
			$found = false;
			foreach ($devices as $device) {
			if (strpos($device, $name) !== false)
			$found = true;
			}
			if ($found === false) {
			// current partition is not found in the blkid list, add it to raw devices
			$raw_devices["/dev/" . $name] = $size;
			$i++;
			}
			}

			//special case
			if (count($raw_devices)>1) {
			foreach($raw_devices as $k=>$v){
			if (preg_match('/sd[a-z][0-9]/',$k)==0) {
			unset($raw_devices[$k]);
			}
			}
			}
			return $raw_devices;
			}

			?>

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