summaryrefslogtreecommitdiffstats
path: root/perl-install/mouse.pm
diff options
context:
space:
mode:
authorPascal Rigaux <pixel@mandriva.com>2000-08-05 22:43:09 +0000
committerPascal Rigaux <pixel@mandriva.com>2000-08-05 22:43:09 +0000
commitc5d30320d3d120ccd291ccc7b7271400a4f20e4a (patch)
tree5d6f28c29997a7ba972748e7847da2f8be7d91e2 /perl-install/mouse.pm
parent664a90a665e3eef21016d1525de69c82d92d484a (diff)
downloaddrakx-c5d30320d3d120ccd291ccc7b7271400a4f20e4a.tar
drakx-c5d30320d3d120ccd291ccc7b7271400a4f20e4a.tar.gz
drakx-c5d30320d3d120ccd291ccc7b7271400a4f20e4a.tar.bz2
drakx-c5d30320d3d120ccd291ccc7b7271400a4f20e4a.tar.xz
drakx-c5d30320d3d120ccd291ccc7b7271400a4f20e4a.zip
no_comment
Diffstat (limited to 'perl-install/mouse.pm')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.1 (git 2.21.0) at 2024-12-30 17:31:45 +0000
d='n126' href='#n126'>126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 
package devices; # $Id$

use diagnostics;
use strict;

use common;
use run_program;
use log;
use c;

sub size {
    my ($dev) = @_;
    sysopen(my $F, $dev, 0) or log::l("open $dev: $!"), return 0;

    my $valid_offset = sub { sysseek($F, $_[0], 0) && sysread($F, my $_a, 1) };

    #- first try getting the size nicely
    if (my $size = c::total_sectors(fileno $F)) {
	return $size * $common::SECTORSIZE;
    }

    #- sad it didn't work, well searching the size using the dichotomy algorithm!
    my $low = 0;
    my ($high, $mid);

    #- first find n where 2^n < size <= 2^n+1
    for ($high = 1; $high > 0 && $valid_offset->($high); $high *= 2) { $low = $high }

    while ($low < $high - 1) {
	$mid = int(($low + $high) / 2);
	$valid_offset->($mid) ? $low : $high = $mid;
    }
    $low + 1;
}

sub del_loop {
    my ($dev) = @_;
    run_program::run("losetup", "-d", $dev);
}
sub find_free_loop_raw {
    my ($o_chloop) = @_;
    foreach (0..7) {
	my $dev = make(($o_chloop && 'ch') . "loop$_");
	sysopen(my $F, $dev, 2) or next;
	!ioctl($F, c::LOOP_GET_STATUS(), my $_tmp) && $! == 6 or next; #- 6 == ENXIO
	return $dev;
    }
    die "no free loop found";
}
sub find_free_loop() { find_free_loop_raw() }
sub find_free_chloop() { find_free_loop_raw('chloop') }
sub set_loop {
    my ($file, $o_encrypt_key, $o_encryption) = @_;
    my $dev = find_free_loop();

    if ($o_encrypt_key && $o_encryption) {
	my $cmd = "losetup -p 0 -e $o_encryption $dev $file";
	log::l("calling $cmd");
	open(my $F, "|$cmd");
	print $F $o_encrypt_key;
	close $F or die "losetup failed";
    } else {
	run_program::run("losetup", $dev, $file) or return;
    }
    $dev;
}

sub entry {
    my ($type, $major, $minor);
    local ($_) = @_;

    if (/^0x([\da-f]{3,4})$/i) {
	$type = c::S_IFBLK();
	($major, $minor) = unmakedev(hex $1);
    } elsif (/^sd(.)(\d{0,2})/) {
	$type = c::S_IFBLK();
	$major = 8;
	$minor = 16 * (ord($1) - ord('a')) + ($2 || 0);
    } elsif (/^hd(.)(\d{0,2})/) {
	$type = c::S_IFBLK();
	($major, $minor) =
	    @{ ${{'a' => [3, 0], 'b' => [3, 64],
		   'c' => [22,0], 'd' => [22,64],
		   'e' => [33,0], 'f' => [33,64],
		   'g' => [34,0], 'h' => [34,64],
		   'i' => [56,0], 'j' => [56,64],
		   'k' => [57,0], 'l' => [57,64],
                   'm' => [88,0], 'n' => [88,64],
                   'o' => [89,0], 'p' => [89,64],
                   'q' => [90,0], 'r' => [90,64],
                   's' => [91,0], 't' => [91,64],
	       }}{$1} or die "unknown device $_" };
	$minor += $2 || 0;
    } elsif (/^ram(.*)/) {
	$type = c::S_IFBLK();
	$major = 1;
	$minor = $1 eq '' ? 1 : $1;
    } elsif (m|^rd/c(\d+)d(\d+)(p(\d+))?|) {
	# dac 960 "rd/cXdXXpX"
        $type = c::S_IFBLK();
	$major = 48 + $1;
	$minor = 8 * $2 + $4;
    } elsif (m,(ida|cciss)/c(\d+)d(\d+)(?:p(\d+))?,) {
	# Compaq Smart Array "ida/c0d0{p1}"
	$type = c::S_IFBLK();
	$major = ($1 eq 'ida' ? 72 : 104) + $2;
	$minor = 16 * $3 + ($4 || 0);
    } elsif (m,(ataraid)/d(\d+)(?:p(\d+))?,) {
	# ATA raid "ataraid/d0{p1}"
	$type = c::S_IFBLK();
	$major = 114;
	$minor = 16 * $1 + ($2 || 0);
    } elsif (/(.*?)(\d+)$/) {
	    ($type, $major, $minor) =
	     @{ ${{"fd"          => [ c::S_IFBLK(), 2,  0  ],
		   "hidbp-mse-"  => [ c::S_IFCHR(), 10, 32 ],
		   "lp"          => [ c::S_IFCHR(), 6,  0  ],
		   "usb/lp"      => [ c::S_IFCHR(), 180, 0 ],
		   "input/event" => [ c::S_IFCHR(), 13, 64 ],
		   "loop"        => [ c::S_IFBLK(), 7,  0  ],
		   "chloop"      => [ c::S_IFBLK(), 100, 0 ],