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295 lines
7.5 KiB
295 lines
7.5 KiB
/* Disks.cpp
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**
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** Copyright (C) 2000,2001 by Bernhard Rosenkraenzer
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**
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** Contributions by A. Seigo and W. Bastian.
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**
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*/
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/*
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program in a file called COPYING; if not, write to
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** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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** MA 02110-1301, USA.
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*/
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/*
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** Bug reports and questions can be sent to kde-devel@kde.org
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*/
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#include "Disks.h"
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#include <unistd.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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StringList ptable::disklist()
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{
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/* The basics behind scanning for a disk are simple: If it can be *
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* opened, it exists. *
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* Using access() is not sufficient - that's successful if the device *
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* node exists but there's no actual device. *
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* Checking /proc/devices would work, but it wouldn't autoload modules*
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* so chances are we'd be missing something. */
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StringList dsk;
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int fd;
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bool finished=false;
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#define CHECK_DEV(d) if((fd=open(d, O_RDONLY))<0) { \
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finished=true; \
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continue; \
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} \
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close(fd); \
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dsk+=d
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String dev="/dev/hd"; // IDE devices: /dev/hd[a-t]
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for(char a='a'; a<='t'; a++) {
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// We can't use finished for IDE drives - it's perfectly OK
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// to have a /dev/hdc but no /dev/hdb.
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CHECK_DEV(dev+a);
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}
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finished=false;
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dev="/dev/sd"; // SCSI disks 0-25
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for(char a='a'; a<='z' && !finished; a++) {
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CHECK_DEV(dev+a);
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}
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for(char prefix='a'; prefix <='d' && !finished; prefix++) {
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dev="/dev/sd" + prefix; // SCSI disks 26-127
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for(char a='a'; (a<='x' || (a<='z' && prefix<'d')) && !finished; a++) {
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CHECK_DEV(dev+a);
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}
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}
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finished=false;
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dev="/dev/i2o/hd"; // I2O disks 0-25: /dev/i2o/hd[a-z]
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for(char a='a'; a<='z' && !finished; a++) {
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CHECK_DEV(dev+a);
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}
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for(char prefix='a'; prefix <='d' && !finished; prefix++) {
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dev="/dev/i2o/hd" + prefix; // I2O disks 26-127
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for(char a='a'; (a<='x' || (a<='z' && prefix<'d')) && !finished; a++) {
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CHECK_DEV(dev+a);
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}
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}
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finished=false;
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dev="/dev/pd"; // Parallel port disks: /dev/pd[a-d]
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for(char a='a'; a<='d' && !finished; a++) {
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CHECK_DEV(dev+a);
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}
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finished=false;
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for(unsigned int i=0; i<=31 && !finished; i++) { // Software RAID
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String device;
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device.sprintf("/dev/md%u", i);
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CHECK_DEV(device);
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}
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finished=false;
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for(unsigned int i=0; i<=7; i++) { //Compaq Smart Array
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for(unsigned int j=0; j<=15 && !finished; j++) {
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String device;
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device.sprintf("/dev/ida/c%ud%u", i, j);
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CHECK_DEV(device);
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}
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}
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finished=false;
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for(unsigned int i=0; i<=7; i++) { // Mylex DAC960
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for(unsigned int j=0; j<=31 && !finished; j++) {
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String device;
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device.sprintf("/dev/rd/c%ud%u", i, j);
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CHECK_DEV(device);
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}
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}
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finished=false;
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dev="/dev/ed"; // MCA ESDI harddisks: /dev/ed[ab]
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for(char a='a'; a<='b' && !finished; a++) {
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CHECK_DEV(dev+a);
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}
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finished=false;
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dev="/dev/xd"; // XT (8-bit) harddisks: /dev/xd[ab]
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for(char a='a'; a<='b' && !finished; a++) {
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CHECK_DEV(dev+a);
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}
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return dsk;
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}
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StringList ptable::partlist()
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{
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StringList s;
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StringList d=disklist();
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for(StringList::const_iterator it=d.begin(); it!=d.end(); it++) {
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for(int i=1; i<32; i++) {
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String drive;
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drive.sprintf("%s%u", (*it).cstr(), i);
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int fd=open(drive, O_RDONLY);
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if(fd>=0) {
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char test;
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if(read(fd, &test, 1)>0)
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s += drive;
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close(fd);
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} else
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break;
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}
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}
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return s;
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}
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ptable::ptable(StringList const &disks)
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{
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partition.clear();
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id.clear();
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mountpt.clear();
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for(StringList::const_iterator it=disks.begin(); it!=disks.end(); it++)
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scandisk(*it);
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}
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ptable::ptable(String const &disk)
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{
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partition.clear();
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id.clear();
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mountpt.clear();
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scandisk(disk);
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}
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void ptable::scandisk(String const &disk)
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{
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String cmd;
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cmd.sprintf("fdisk -l %s 2>&1", (char*)disk);
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FILE *fdisk=popen(cmd, "r");
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char *buf=(char *) malloc(1024);
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String dev;
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while(fgets(buf, 1024, fdisk)) {
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if(strncmp("/dev/", buf, 5)==0) { // Partition entry
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// We don't care about active vs. non-active partitions.
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// Remove the sign.
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while(strchr(buf, '*')) *strchr(buf, '*')=' ';
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// blanks are blanks...
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while(strchr(buf, '\t')) *strchr(buf, '\t')=' ';
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// Get the device
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*strchr(buf, ' ')=0;
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dev=buf;
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partition += buf;
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// And figure out where/if it's mounted
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mountpt[dev]=mountpoint(dev);
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// Lastly, get the partition type.
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strcpy(buf, buf+strlen(buf)+1);
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while(isspace(*buf)) strcpy(buf, buf+1);
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strcpy(buf, strchr(buf, ' ')); // skip Start
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while(isspace(*buf)) strcpy(buf, buf+1);
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strcpy(buf, strchr(buf, ' ')); // skip End
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while(isspace(*buf)) strcpy(buf, buf+1);
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strcpy(buf, strchr(buf, ' ')); // skip Blocks
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while(isspace(*buf)) strcpy(buf, buf+1);
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id[dev]=strtol(buf, NULL, 16);
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}
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}
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pclose(fdisk);
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free(buf);
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}
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String ptable::mountpoint(String const &device, bool fstab_fallback)
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{
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char *buf=new char[1024];
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FILE *f=fopen("/etc/mtab", "r");
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String mp="";
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while(fgets(buf, 1024, f)) {
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if(strchr(buf,' '))
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*strchr(buf, ' ')=0;
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if(strchr(buf,'\t'))
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*strchr(buf, '\t')=0;
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if(device.cmp(buf)) {
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strcpy(buf, buf+strlen(buf)+1);
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while(isspace(*buf))
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strcpy(buf, buf+1);
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if(strchr(buf,' '))
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*strchr(buf, ' ')=0;
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if(strchr(buf,'\t'))
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*strchr(buf, '\t')=0;
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mp=buf;
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mp=mp.simplifyWhiteSpace();
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break;
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}
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}
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fclose(f);
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if(mp.empty() && fstab_fallback) {
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f=fopen("/etc/fstab", "r");
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while(fgets(buf, 1024, f)) {
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if(strchr(buf,' '))
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*strchr(buf, ' ')=0;
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if(strchr(buf,'\t'))
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*strchr(buf, '\t')=0;
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if(device.cmp(buf)) {
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strcpy(buf, buf+strlen(buf)+1);
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while(isspace(*buf))
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strcpy(buf, buf+1);
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if(strchr(buf,' '))
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*strchr(buf, ' ')=0;
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if(strchr(buf,'\t'))
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*strchr(buf, '\t')=0;
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mp=buf;
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mp=mp.simplifyWhiteSpace();
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break;
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}
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}
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fclose(f);
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}
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delete buf;
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return mp;
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}
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String ptable::device(String const &mountpt, bool fstab_fallback)
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{
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char *buf=new char[1024];
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FILE *f=fopen("/etc/mtab", "r");
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String dev="";
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while(fgets(buf, 1024, f)) {
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if(strchr(buf,' '))
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*strchr(buf, ' ')=0;
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if(strchr(buf,'\t'))
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*strchr(buf, '\t')=0;
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String device=buf;
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strcpy(buf, buf+strlen(buf)+1);
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while(isspace(*buf))
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strcpy(buf, buf+1);
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if(strchr(buf,' '))
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*strchr(buf, ' ')=0;
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if(strchr(buf,'\t'))
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*strchr(buf, '\t')=0;
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String mp=buf;
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mp=mp.simplifyWhiteSpace();
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if(mp==mountpt) {
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dev=device;
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break;
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}
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}
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fclose(f);
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if(dev.empty() && fstab_fallback) {
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// The FS is not mounted - maybe it could be, though.
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f=fopen("/etc/fstab", "r");
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while(fgets(buf, 1024, f)) {
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if(strchr(buf,' '))
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*strchr(buf, ' ')=0;
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if(strchr(buf,'\t'))
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*strchr(buf, '\t')=0;
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String device=buf;
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strcpy(buf, buf+strlen(buf)+1);
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while(isspace(*buf))
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strcpy(buf, buf+1);
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if(strchr(buf,' '))
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*strchr(buf, ' ')=0;
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if(strchr(buf,'\t'))
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*strchr(buf, '\t')=0;
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String mp=buf;
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mp=mp.simplifyWhiteSpace();
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if(mp==mountpt) {
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dev=device;
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break;
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}
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}
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fclose(f);
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}
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delete buf;
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return dev;
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}
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