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/* Disks.cpp
**
** Copyright (C) 2000,2001 by Bernhard Rosenkraenzer
**
** Contributions by A. Seigo and W. Bastian.
**
*/
/*
** 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 2 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 in a file called COPYING; if not, write to
** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
** MA 02110-1301, USA.
*/
/*
** Bug reports and questions can be sent to kde-devel@kde.org
*/
#include "Disks.h"
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
StringList ptable::disklist()
{
/* The basics behind scanning for a disk are simple: If it can be *
* opened, it exists. *
* Using access() is not sufficient - that's successful if the device *
* node exists but there's no actual device. *
* Checking /proc/devices would work, but it wouldn't autoload modules*
* so chances are we'd be missing something. */
StringList dsk;
int fd;
bool finished=false;
#define CHECK_DEV(d) if((fd=open(d, O_RDONLY))<0) { \
finished=true; \
continue; \
} \
close(fd); \
dsk+=d
String dev="/dev/hd"; // IDE devices: /dev/hd[a-t]
for(char a='a'; a<='t'; a++) {
// We can't use finished for IDE drives - it's perfectly OK
// to have a /dev/hdc but no /dev/hdb.
CHECK_DEV(dev+a);
}
finished=false;
dev="/dev/sd"; // SCSI disks 0-25
for(char a='a'; a<='z' && !finished; a++) {
CHECK_DEV(dev+a);
}
for(char prefix='a'; prefix <='d' && !finished; prefix++) {
dev="/dev/sd" + prefix; // SCSI disks 26-127
for(char a='a'; (a<='x' || (a<='z' && prefix<'d')) && !finished; a++) {
CHECK_DEV(dev+a);
}
}
finished=false;
dev="/dev/i2o/hd"; // I2O disks 0-25: /dev/i2o/hd[a-z]
for(char a='a'; a<='z' && !finished; a++) {
CHECK_DEV(dev+a);
}
for(char prefix='a'; prefix <='d' && !finished; prefix++) {
dev="/dev/i2o/hd" + prefix; // I2O disks 26-127
for(char a='a'; (a<='x' || (a<='z' && prefix<'d')) && !finished; a++) {
CHECK_DEV(dev+a);
}
}
finished=false;
dev="/dev/pd"; // Parallel port disks: /dev/pd[a-d]
for(char a='a'; a<='d' && !finished; a++) {
CHECK_DEV(dev+a);
}
finished=false;
for(unsigned int i=0; i<=31 && !finished; i++) { // Software RAID
String device;
device.sprintf("/dev/md%u", i);
CHECK_DEV(device);
}
finished=false;
for(unsigned int i=0; i<=7; i++) { //Compaq Smart Array
for(unsigned int j=0; j<=15 && !finished; j++) {
String device;
device.sprintf("/dev/ida/c%ud%u", i, j);
CHECK_DEV(device);
}
}
finished=false;
for(unsigned int i=0; i<=7; i++) { // Mylex DAC960
for(unsigned int j=0; j<=31 && !finished; j++) {
String device;
device.sprintf("/dev/rd/c%ud%u", i, j);
CHECK_DEV(device);
}
}
finished=false;
dev="/dev/ed"; // MCA ESDI harddisks: /dev/ed[ab]
for(char a='a'; a<='b' && !finished; a++) {
CHECK_DEV(dev+a);
}
finished=false;
dev="/dev/xd"; // XT (8-bit) harddisks: /dev/xd[ab]
for(char a='a'; a<='b' && !finished; a++) {
CHECK_DEV(dev+a);
}
return dsk;
}
StringList ptable::partlist()
{
StringList s;
StringList d=disklist();
for(StringList::const_iterator it=d.begin(); it!=d.end(); it++) {
for(int i=1; i<32; i++) {
String drive;
drive.sprintf("%s%u", (*it).cstr(), i);
int fd=open(drive, O_RDONLY);
if(fd>=0) {
char test;
if(read(fd, &test, 1)>0)
s += drive;
close(fd);
} else
break;
}
}
return s;
}
ptable::ptable(StringList const &disks)
{
partition.clear();
id.clear();
mountpt.clear();
for(StringList::const_iterator it=disks.begin(); it!=disks.end(); it++)
scandisk(*it);
}
ptable::ptable(String const &disk)
{
partition.clear();
id.clear();
mountpt.clear();
scandisk(disk);
}
void ptable::scandisk(String const &disk)
{
String cmd;
cmd.sprintf("fdisk -l %s 2>&1", (char*)disk);
FILE *fdisk=popen(cmd, "r");
char *buf=(char *) malloc(1024);
String dev;
while(fgets(buf, 1024, fdisk)) {
if(strncmp("/dev/", buf, 5)==0) { // Partition entry
// We don't care about active vs. non-active partitions.
// Remove the sign.
while(strchr(buf, '*')) *strchr(buf, '*')=' ';
// blanks are blanks...
while(strchr(buf, '\t')) *strchr(buf, '\t')=' ';
// Get the device
*strchr(buf, ' ')=0;
dev=buf;
partition += buf;
// And figure out where/if it's mounted
mountpt[dev]=mountpoint(dev);
// Lastly, get the partition type.
strcpy(buf, buf+strlen(buf)+1);
while(isspace(*buf)) strcpy(buf, buf+1);
strcpy(buf, strchr(buf, ' ')); // skip Start
while(isspace(*buf)) strcpy(buf, buf+1);
strcpy(buf, strchr(buf, ' ')); // skip End
while(isspace(*buf)) strcpy(buf, buf+1);
strcpy(buf, strchr(buf, ' ')); // skip Blocks
while(isspace(*buf)) strcpy(buf, buf+1);
id[dev]=strtol(buf, NULL, 16);
}
}
pclose(fdisk);
free(buf);
}
String ptable::mountpoint(String const &device, bool fstab_fallback)
{
char *buf=new char[1024];
FILE *f=fopen("/etc/mtab", "r");
String mp="";
while(fgets(buf, 1024, f)) {
if(strchr(buf,' '))
*strchr(buf, ' ')=0;
if(strchr(buf,'\t'))
*strchr(buf, '\t')=0;
if(device.cmp(buf)) {
strcpy(buf, buf+strlen(buf)+1);
while(isspace(*buf))
strcpy(buf, buf+1);
if(strchr(buf,' '))
*strchr(buf, ' ')=0;
if(strchr(buf,'\t'))
*strchr(buf, '\t')=0;
mp=buf;
mp=mp.simplifyWhiteSpace();
break;
}
}
fclose(f);
if(mp.empty() && fstab_fallback) {
f=fopen("/etc/fstab", "r");
while(fgets(buf, 1024, f)) {
if(strchr(buf,' '))
*strchr(buf, ' ')=0;
if(strchr(buf,'\t'))
*strchr(buf, '\t')=0;
if(device.cmp(buf)) {
strcpy(buf, buf+strlen(buf)+1);
while(isspace(*buf))
strcpy(buf, buf+1);
if(strchr(buf,' '))
*strchr(buf, ' ')=0;
if(strchr(buf,'\t'))
*strchr(buf, '\t')=0;
mp=buf;
mp=mp.simplifyWhiteSpace();
break;
}
}
fclose(f);
}
delete buf;
return mp;
}
String ptable::device(String const &mountpt, bool fstab_fallback)
{
char *buf=new char[1024];
FILE *f=fopen("/etc/mtab", "r");
String dev="";
while(fgets(buf, 1024, f)) {
if(strchr(buf,' '))
*strchr(buf, ' ')=0;
if(strchr(buf,'\t'))
*strchr(buf, '\t')=0;
String device=buf;
strcpy(buf, buf+strlen(buf)+1);
while(isspace(*buf))
strcpy(buf, buf+1);
if(strchr(buf,' '))
*strchr(buf, ' ')=0;
if(strchr(buf,'\t'))
*strchr(buf, '\t')=0;
String mp=buf;
mp=mp.simplifyWhiteSpace();
if(mp==mountpt) {
dev=device;
break;
}
}
fclose(f);
if(dev.empty() && fstab_fallback) {
// The FS is not mounted - maybe it could be, though.
f=fopen("/etc/fstab", "r");
while(fgets(buf, 1024, f)) {
if(strchr(buf,' '))
*strchr(buf, ' ')=0;
if(strchr(buf,'\t'))
*strchr(buf, '\t')=0;
String device=buf;
strcpy(buf, buf+strlen(buf)+1);
while(isspace(*buf))
strcpy(buf, buf+1);
if(strchr(buf,' '))
*strchr(buf, ' ')=0;
if(strchr(buf,'\t'))
*strchr(buf, '\t')=0;
String mp=buf;
mp=mp.simplifyWhiteSpace();
if(mp==mountpt) {
dev=device;
break;
}
}
fclose(f);
}
delete buf;
return dev;
}
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