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authorChmouel Boudjnah <chmouel@mandriva.org>1999-07-01 12:29:54 +0000
committerChmouel Boudjnah <chmouel@mandriva.org>1999-07-01 12:29:54 +0000
commite1729dfdb9c341fe0b9fed7d7b0a80691a547d82 (patch)
treeb72fd8f59af166fe944ebcf114d648ed5644f752 /perl-install/detect_devices.pm
parentb50e655e352e2524fb3fb84b2bb4bc96e6a04cf0 (diff)
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"See_The_Changelog"
Diffstat (limited to 'perl-install/detect_devices.pm')
-rw-r--r--perl-install/detect_devices.pm151
1 files changed, 151 insertions, 0 deletions
diff --git a/perl-install/detect_devices.pm b/perl-install/detect_devices.pm
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+package detect_devices;
+
+use diagnostics;
+use strict;
+
+use log;
+use common qw(:common :file);
+use c;
+
+
+my $scsiDeviceAvailable;
+my $CSADeviceAvailable;
+
+1;
+
+sub get {
+ # Detect the default BIOS boot harddrive is kind of tricky. We may have IDE,
+ # SCSI and RAID devices on the same machine. From what I see so far, the default
+ # BIOS boot harddrive will be
+ # 1. The first IDE device if IDE exists. Or
+ # 2. The first SCSI device if SCSI exists. Or
+ # 3. The first RAID device if RAID exists.
+
+ map { &{$_->[0]}() ? &{$_->[1]}() : () }
+ [ \&hasIDE, \&getIDE ],
+ [ \&hasSCSI, \&getSCSI ],
+ [ \&hasDAC960, \&getDAC960 ],
+ [ \&hasCompaqSmartArray, \&getCompaqSmartArray ];
+}
+sub hds() { grep { $_->{type} eq 'hd' } get(); }
+sub cdroms() { grep { $_->{type} eq 'cdrom' } get(); }
+
+sub hasSCSI() {
+ defined $scsiDeviceAvailable and return $scsiDeviceAvailable;
+ local *F;
+ open F, "/proc/scsi/scsi" or log::l("failed to open /proc/scsi/scsi: $!"), return 0;
+ foreach (<F>) {
+ /devices: none/ and log::l("no scsi devices are available"), return $scsiDeviceAvailable = 0;
+ }
+ log::l("scsi devices are available");
+ $scsiDeviceAvailable = 1;
+}
+sub hasIDE() { 1 }
+sub hasDAC960() { 1 }
+
+sub hasCompaqSmartArray() {
+ defined $CSADeviceAvailable and return $CSADeviceAvailable;
+ -r "/proc/array/ida0" or log::l("failed to open /proc/array/ida0: $!"), return $CSADeviceAvailable = 0;
+ log::l("Compaq Smart Array controllers available");
+ $CSADeviceAvailable = 1;
+}
+
+sub getSCSI() {
+ my @drives;
+ my ($driveNum, $cdromNum, $tapeNum) = qw(0 0 0);
+ my $err = sub { chop; log::l("unexpected line in /proc/scsi/scsi: $_"); error() };
+ local $_;
+
+ local *F;
+ open F, "/proc/scsi/scsi" or return &$err();
+ $_ = <F>; /^Attached devices:/ or return &$err();
+ while ($_ = <F>) {
+ my ($id) = /^Host:.*?Id: (\d+)/ or return &$err();
+ $_ = <F>; my ($vendor, $model) = /^\s*Vendor:\s*(.*?)\s+Model:\s*(.*?)\s+Rev:/ or return &$err();
+ $_ = <F>; my ($type) = /^\s*Type:\s*(.*)/ or &$err();
+ my $device;
+ if ($type =~ /Direct-Access/) {
+ $type = 'hd';
+ $device = "sd" . chr($driveNum++ + ord('a'));
+ } elsif ($type =~ /Sequential-Access/) {
+ $type = 'tape';
+ $device = "st" . $tapeNum++;
+ } elsif ($type =~ /CD-ROM/) {
+ $type = 'cdrom';
+ $device = "scd" . $cdromNum++;
+ }
+ $device and push @drives, { device => $device, type => $type, info => "$vendor $model", id => $id, bus => 0 };
+ }
+ @drives;
+}
+
+sub getIDE() {
+ my @idi;
+
+ -r "/proc/ide" or die "sorry, /proc/ide not available, seems like you have a pre-2.2 kernel\n => not handled yet :(";
+
+ # Great. 2.2 kernel, things are much easier and less error prone.
+ foreach my $d (glob_('/proc/ide/hd*')) {
+ my ($t) = chop_(cat_("$d/media"));
+ my $type = $ {{disk => 'hd', cdrom => 'cdrom', tape => 'tape', floppy => 'fd'}}{$t} or next;
+ my ($info) = chop_(cat_("$d/model")); $info ||= "(none)";
+
+ my $num = ord (($d =~ /(.)$/)[0]) - ord 'a';
+ push @idi, { type => $type, device => basename($d), info => $info, bus => $num/2, id => $num%2 };
+ }
+ @idi;
+}
+
+
+sub getCompaqSmartArray() {
+ my @idi;
+ my $f;
+
+ for (my $i = 0; -r ($f = "/proc/array/ida$i"); $i++) {
+ local *F;
+ open F, $f or die;
+ local $_ = <F>;
+ my ($name) = m|ida/(.*?):| or next;
+ push @idi, { device => $name, info => "Compaq RAID logical disk", type => 'hd' };
+ }
+ @idi;
+}
+
+sub getDAC960() {
+ my @idi;
+ my $file = "/var/log/dmesg";
+ -r $file or $file = "/tmp/syslog";
+
+ local *F;
+ open F, $file or die "Failed to open $file: $!";
+
+ # We are looking for lines of this format:DAC960#0:
+ # /dev/rd/c0d0: RAID-7, Online, 17928192 blocks, Write Thru0123456790123456789012
+ foreach (<F>) {
+ my ($devicename, $info) = m|/dev/rd/(.*?): (.*?),| or next;
+ push @idi, { info => $info, type => 'hd', devicename => $devicename };
+ log::l("DAC960: $devicename: $info");
+ }
+ @idi;
+}
+
+
+sub getNet() {
+ # I should probably ask which device to use if multiple ones are available -- oh well :-(
+ foreach (qw(eth0 tr0 plip0 plip1 plip2 fddi0)) {
+ hasNetDevice($_) and log::l("$_ is available -- using it for networking"), return $_;
+ }
+ undef;
+}
+sub getPlip() {
+ foreach (0..2) {
+ hasNetDevice("plip$_") and log::l("plip$_ will be used for PLIP"), return "plip$_";
+ }
+ undef;
+}
+
+sub hasNet() { goto &getNet }
+sub hasPlip() { goto &getPlip }
+sub hasEthernet() { hasNetDevice("eth0"); }
+sub hasTokenRing() { hasNetDevice("tr0"); }
+sub hasNetDevice($) { c::hasNetDevice($_[0]) }