diff options
Diffstat (limited to 'perl-install/devices.pm')
-rw-r--r-- | perl-install/devices.pm | 104 |
1 files changed, 35 insertions, 69 deletions
diff --git a/perl-install/devices.pm b/perl-install/devices.pm index 6b7e1edd4..704b3d40d 100644 --- a/perl-install/devices.pm +++ b/perl-install/devices.pm @@ -17,15 +17,15 @@ sub size($) { my $valid_offset = sub { sysseek(F, $_[0], 0) && sysread(F, my $a, 1) }; - #- first try getting the size nicely + # first try getting the size nicely my $size = 0; ioctl(F, c::BLKGETSIZE(), $size) and return unpack("i", $size) * $common::SECTORSIZE; - #- sad it didn't work, well searching the size using the dichotomy algorithm! + # sad it didn't work, well searching the size using the dichotomy algorithm! my $low = 0; my ($high, $mid); - #- first find n where 2^n < size <= 2^n+1 + # first find n where 2^n < size <= 2^n+1 for ($high = 1; $high > 0 && &$valid_offset($high); $high *= 2) { $low = $high; } while ($low < $high - 1) { @@ -35,107 +35,73 @@ sub size($) { $low + 1; } -sub set_loop { - my ($file) = @_; +sub make($) { + local $_ = my $file = $_[0]; + my ($type, $major, $minor); - foreach (0..7) { - local *F; - my $dev = make("loop$_"); - sysopen F, $dev, 2 or next; - !ioctl(F, c::LOOP_GET_STATUS(), my $tmp) && $! == 6 or next; #- 6 == ENXIO - log::l("trying with loop $dev"); - return c::set_loop(fileno F, $file) && $dev; + unless (s,^/(dev|tmp)/,,) { + $file = -e "/dev/$file" ? "/dev/$file" : "/tmp/$file"; } -} -sub entry { - my ($type, $major, $minor); - local ($_) = @_; + -e $file and return $file; # assume nobody takes fun at creating files named as device - if (/^sd(.)(\d{0,2})/) { + if (/^sd(.)(\d\d)/) { $type = c::S_IFBLK(); $major = 8; - $minor = 16 * (ord($1) - ord('a')) + ($2 || 0); + $minor = ord($1) - ord('a') + $2; } elsif (/^hd(.)(\d{0,2})/) { $type = c::S_IFBLK(); - ($major, $minor) = + ($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], }}{$1} or die "unknown device $_" }; $minor += $2 || 0; - } elsif (/^ram(.*)/) { + } 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" + # dac 960 "/rd/cXdXXpX" $type = c::S_IFBLK(); $major = 48 + $1; $minor = 8 * $2 + $4; - } elsif (m|ida/c(\d+)d(\d+)(p(\d+))?|) { + } elsif (m|ida/c(\d+)d(\d+)(p(\d+))|) { # Compaq Smart Array "ida/c0d0{p1}" $type = c::S_IFBLK(); $major = 72 + $1; - $minor = 16 * $2 + ($4 || 0); - } elsif (/(.*)(\d+)$/) { - ($type, $major, $minor) = - @{ ${{"fd" => [ c::S_IFBLK(), 2, 0 ], - "hidbp-mse-" => [ c::S_IFCHR(), 10, 32 ], - "lp" => [ c::S_IFCHR(), 6, 0 ], - "usb/usblp" => [ c::S_IFCHR(), 180, 0 ], - "loop" => [ c::S_IFBLK(), 7, 0 ], - "md" => [ c::S_IFBLK(), 9, 0 ], - "nst" => [ c::S_IFCHR(), 9, 128], - "scd" => [ c::S_IFBLK(), 11, 0 ], - "ttyS" => [ c::S_IFCHR(), 4, 64 ], - }}{$1}}; - $minor += $2; - } - unless ($type) { - ($type, $major, $minor) = - @{ ${{"aztcd" => [ c::S_IFBLK(), 29, 0 ], + $minor = 16 * $2 + $4; + } else { + ($type, $major, $minor) = + @{ $ {{"aztcd" => [ c::S_IFBLK(), 29, 0 ], "bpcd" => [ c::S_IFBLK(), 41, 0 ], "cdu31a" => [ c::S_IFBLK(), 15, 0 ], "cdu535" => [ c::S_IFBLK(), 24, 0 ], "cm206cd" => [ c::S_IFBLK(), 32, 0 ], + "tty" => [ c::S_IFCHR(), 5, 0 ], + "fd0" => [ c::S_IFBLK(), 2, 0 ], + "fd1" => [ c::S_IFBLK(), 2, 1 ], "gscd" => [ c::S_IFBLK(), 16, 0 ], + "lp0" => [ c::S_IFCHR(), 6, 0 ], + "lp1" => [ c::S_IFCHR(), 6, 1 ], + "lp2" => [ c::S_IFCHR(), 6, 2 ], "mcd" => [ c::S_IFBLK(), 23, 0 ], "mcdx" => [ c::S_IFBLK(), 20, 0 ], - "mem" => [ c::S_IFCHR(), 1, 1 ], + "nst0" => [ c::S_IFCHR(), 9, 128 ], "optcd" => [ c::S_IFBLK(), 17, 0 ], - "kbd" => [ c::S_IFCHR(), 11, 0 ], - "psaux" => [ c::S_IFCHR(), 10, 1 ], - "random" => [ c::S_IFCHR(), 1, 8 ], "sbpcd" => [ c::S_IFBLK(), 25, 0 ], + "scd0" => [ c::S_IFBLK(), 11, 0 ], + "scd1" => [ c::S_IFBLK(), 11, 1 ], "sjcd" => [ c::S_IFBLK(), 18, 0 ], - "tty" => [ c::S_IFCHR(), 5, 0 ], - "usbmouse"=> [ c::S_IFCHR(), 13, 63], #- aka /dev/input/mice - "zero" => [ c::S_IFCHR(), 1, 5 ], - }}{$_} or die "unknown device $_ (caller is " . join(":", caller()) . ")" }; + }}{$_} or die "unknown device $type" }; } - ($type, $major, $minor); -} - - -sub make($) { - local $_ = my $file = $_[0]; - - if (m,^(.*/(?:dev|tmp))/(.*),) { - $_ = $2; - } else { - -e $file or $file = "/tmp/$_"; - -e $file or $file = "/dev/$_"; - } - -e $file and return $file; #- assume nobody takes fun at creating files named as device - - my ($type, $major, $minor) = entry($_); - - #- make a directory for this inode if needed. - mkdir dirname($file), 0755; - - syscall_('mknod', $file, $type | 0600, makedev($major, $minor)) or die "mknod failed (dev $_): $!"; + + # make a directory for this inode if needed. + mkdir dirname($file), 0755; + + syscall_('mknod', $file, $type | 0600, makedev($major, $minor)) or die "mknod failed (dev:$_): $!"; $file; } + |