X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fobdclass%2Fobdcontrol;h=7cb9048bd11d024844ccf183fb4a6cb65b950fdc;hb=23cb2304012eca005941811f0585aee5dd985cfc;hp=63a760fd87e350cb20d2b52d0442ae1e473d5582;hpb=efed045fff75845ad4e8d8a1e1e799c3b3db3bcc;p=fs%2Flustre-release.git diff --git a/lustre/obdclass/obdcontrol b/lustre/obdclass/obdcontrol index 63a760f..7cb9048 100755 --- a/lustre/obdclass/obdcontrol +++ b/lustre/obdclass/obdcontrol @@ -1,5 +1,19 @@ #!/usr/bin/perl +# +# This code is issued under the GNU General Public License. +# See the file COPYING in this distribution +# +# Copyright (C) 1998, Stelias Computing +# +# Modified for InterMezzo from Gordian's HSM bcache device/jcm module +# Copyright (C) 1999, Carnegie Mellon University +# +# Derived from InterMezzo's incontrol, modified for OBD's +# Copyright (C) 1999, Stelias Computing +# +# + #use strict; BEGIN { require "asm/errno.ph" }; BEGIN { require "asm/ioctl.ph" }; @@ -9,14 +23,66 @@ eval 'sub OBD_IOC_CREATE () { &_IOC(2, ord(\'f\'), 3, 4);}' unless defined(&OBD_IOC_CREATE); eval 'sub OBD_IOC_SETUP () { &_IOC(1, ord(\'f\'), 4, 4);}' unless defined(&OBD_IOC_SETUP); -eval 'sub OBD_IOC_SYNC () { &_IOC(2, ord(\'f\'), 5, 4);}' unless - defined(&OBD_IOC_SYNC); +eval 'sub OBD_IOC_CLEANUP () { &_IOC(0, ord(\'f\'), 5, 0);}' unless + defined(&OBD_IOC_CLEANUP); eval 'sub OBD_IOC_DESTROY () { &_IOC(1, ord(\'f\'), 6, 4);}' unless defined(&OBD_IOC_DESTROY); +eval 'sub OBD_IOC_PREALLOCATE () { &_IOC(3, ord(\'f\'), 7, 4);}' unless + defined(&OBD_IOC_PREALLOCATE); eval 'sub OBD_IOC_DEC_USE_COUNT () { &_IOC(0, ord(\'f\'), 8, 0);}' unless defined(&OBD_IOC_DEC_USE_COUNT); -eval 'sub OBD_IOC_READ () { &_IOC(3, ord(\'f\'), 10, 4);}' unless +eval 'sub OBD_IOC_SETATTR () { &_IOC(1, ord(\'f\'), 9, 4);}' unless + defined(&OBD_IOC_SETATTR); +eval 'sub OBD_IOC_GETATTR () { &_IOC(2, ord(\'f\'), 10, 4);}' unless + defined(&OBD_IOC_GETATTR); +eval 'sub OBD_IOC_READ () { &_IOC(3, ord(\'f\'), 11, 4);}' unless defined(&OBD_IOC_READ); +eval 'sub OBD_IOC_WRITE () { &_IOC(3, ord(\'f\'), 12, 4);}' unless + defined(&OBD_IOC_WRITE); +eval 'sub OBD_IOC_CONNECT () { &_IOC(2, ord(\'f\'), 13, 4);}' unless + defined(&OBD_IOC_CONNECT); +eval 'sub OBD_IOC_DISCONNECT () { &_IOC(1, ord(\'f\'), 14, 4);}' unless + defined(&OBD_IOC_DISCONNECT); +eval 'sub OBD_IOC_STATFS () { &_IOC(3, ord(\'f\'), 15, 4);}' unless + defined(&OBD_IOC_STATFS); +eval 'sub OBD_IOC_SYNC () { &_IOC(2, ord(\'f\'), 16, 4);}' unless + defined(&OBD_IOC_SYNC); +eval 'sub OBD_IOC_READ2 () { &_IOC(3, ord(\'f\'), 17, 4);}' unless + defined(&OBD_IOC_READ2); +eval 'sub OBD_IOC_FORMATOBD () { &_IOC(3, ord(\'f\'), 18, 4);}' unless + defined(&OBD_IOC_FORMATOBD); +eval 'sub OBD_IOC_PARTITION () { &_IOC(3, ord(\'f\'), 19, 4);}' unless + defined(&OBD_IOC_PARTITION); +eval 'sub OBD_IOC_ATTACH () { &_IOC(3, ord(\'f\'), 20, 4);}' unless + defined(&OBD_IOC_ATTACH); +eval 'sub OBD_IOC_DETACH () { &_IOC(3, ord(\'f\'), 21, 4);}' unless + defined(&OBD_IOC_DETACH); +eval 'sub OBD_IOC_COPY () { &_IOC(3, ord(\'f\'), 22, 4);}' unless + defined(&OBD_IOC_COPY); +eval 'sub OBD_IOC_MIGR () { &_IOC(3, ord(\'f\'), 23, 4);}' unless + defined(&OBD_IOC_MIGR); +eval 'sub OBD_IOC_PUNCH () { &_IOC(3, ord(\'f\'), 24, 4);}' unless + defined(&OBD_IOC_PUNCH); +eval 'sub OBD_SNAP_SETTABLE () { &_IOC(3, ord(\'f\'), 40, 4);}' unless + defined(&OBD_SNAP_SETTABLE); +eval 'sub OBD_SNAP_PRINTTABLE () { &_IOC(3, ord(\'f\'), 41, 4);}' unless + defined(&OBD_SNAP_PRINTTABLE); +eval 'sub OBD_SNAP_DELETE() { &_IOC(3, ord(\'f\'), 42, 4);}' unless + defined(&OBD_SNAP_DELETE); +eval 'sub OBD_SNAP_RESTORE() { &_IOC(3, ord(\'f\'), 43, 4);}' unless + defined(&OBD_SNAP_RESTORE); + +eval 'sub OBD_EXT2_RUNIT () { &_IOC(3, ord(\'f\'), 61, 4);}' unless + defined(&OBD_EXT2_RUNIT); + +eval 'sub OBD_MD_FLALL () {~0;}' unless defined(&OBD_MD_FLALL); +eval 'sub OBD_MD_FLATIME () {1<<1;}' unless defined(&OBD_MD_FLATIME); +eval 'sub OBD_MD_FLMTIME () {1<<2;}' unless defined(&OBD_MD_FLMTIME); +eval 'sub OBD_MD_FLCTIME () {1<<3;}' unless defined(&OBD_MD_FLCTIME); +eval 'sub OBD_MD_FLSIZE () {1<<4;}' unless defined(&OBD_MD_FLSIZE); +eval 'sub OBD_MD_FLMODE () {1<<7;}' unless defined(&OBD_MD_FLMODE); +eval 'sub OBD_MD_FLUID () {1<<8;}' unless defined(&OBD_MD_FLUID); +eval 'sub OBD_MD_FLGID () {1<<9;}' unless defined(&OBD_MD_FLGID); use Getopt::Long; use File::stat; @@ -25,61 +91,229 @@ use Carp; use Term::ReadLine; use IO::Handle; -my ($device, $filesystem); -# startup options (I'll replace these when I have some to replace with) -GetOptions("device=s" => \$device, "fs=s" => $filesystem) || die "Getoptions"; -$device = "/dev/obd" unless $device; -$filesystem = "/dev/loop0" unless $filesystem; +# NOTE long long are layed out in ia32 memory as follows: +# u = 0xaaaabbbbccccdddd has ccccdddd at &u and aaaabbbb 4 bytes on +# this may be different on other architectures -# get a console for the app -my $term = new Term::ReadLine 'obdcontrol '; -my $attribs = $term->Attribs; -$term->ornaments('md,me,,'); # bold face prompt +# we use 32-bit integers for all 64-bit quantities in this program +# #define OBD_INLINESZ 60 +# #define OBD_OBDMDSZ 60 +# /* Note: 64-bit types are 64-bit aligned in structure */ +# struct obdo { +# obd_id o_id; +# obd_gr o_gr; +# obd_time o_atime; +# obd_time o_mtime; +# obd_time o_ctime; +# obd_size o_size; +# obd_blocks o_blocks; +# obd_blksize o_blksize; +# obd_mode o_mode; +# obd_uid o_uid; +# obd_gid o_gid; +# obd_flag o_flags; +# obd_flag o_obdflags; +# obd_count o_nlink; +# obd_count o_generation; +# obd_flag o_valid; /* hot fields in this obdo */ +# char o_inline[60]; +# char o_obdmd[60]; +# struct list_head o_list; +# struct obd_ops *o_op; +# }; + +sub obdo_pack { + my $obdo = shift; + pack "LL LL LL LL LL LL LL L L L L L L L L L a60 a60 L L L", + $obdo->{id}, 0, + $obdo->{gr}, 0, + $obdo->{atime}, 0, + $obdo->{mtime}, 0 , + $obdo->{ctime}, 0, + $obdo->{size}, 0, + $obdo->{blocks}, 0, + $obdo->{blksize}, + $obdo->{mode}, + $obdo->{uid}, + $obdo->{gid}, + $obdo->{flags}, + $obdo->{obdflags}, + $obdo->{nlink}, + $obdo->{generation}, + $obdo->{valid}, + $obdo->{inline}, + $obdo->{obdmd}, + 0, 0, # struct list_head + 0; # struct obd_ops +} + +sub obdo_unpack { + my $buf = shift; + my $offset = shift; + my $obdo; + ($obdo->{id}, + $obdo->{gr}, + $obdo->{atime}, + $obdo->{mtime}, + $obdo->{ctime}, + $obdo->{size}, + $obdo->{blocks}, + $obdo->{blksize}, + $obdo->{mode}, + $obdo->{uid}, + $obdo->{gid}, + $obdo->{flags}, + $obdo->{obdflags}, + $obdo->{nlink}, + $obdo->{generation}, + $obdo->{valid}, + $obdo->{inline}, + $obdo->{obdmd}) = unpack "x${offset}Lx4 Lx4 Lx4 Lx4 Lx4 Lx4 Lx4 L L L L L L L L L a60 a60", $buf; + $obdo; +} + +sub obdo_print { + + my $obdo = shift; + + printf "id: %d\ngrp: %d\natime: %s\nmtime: %s\nctime: %s\nsize: %d\nblocks: %d\nblksize: %d\nmode: %o\nuid: %d\ngid: %d\nflags: %x\nobdflags: %x\nnlink: %d\nvalid: %x\ninline: %s\nobdmd: %s\n", + $obdo->{id}, + $obdo->{gr}, + $obdo->{atime}, + $obdo->{mtime}, + $obdo->{ctime}, + $obdo->{size}, + $obdo->{blocks}, + $obdo->{blksize}, + $obdo->{mode}, + $obdo->{uid}, + $obdo->{gid}, + $obdo->{flags}, + $obdo->{obdflags}, + $obdo->{nlink}, + $obdo->{valid}, + $obdo->{inline}, + $obdo->{obdmd}; +} + + +my ($file); + +GetOptions("f!" => \$file, "device=s" => \$::device, ) || die "Getoptions"; -# make sure stdout is not buffered -STDOUT->autoflush(1); + +# get a console for the app my $line; my $command; my $arg; +my @procsysobd_objects = ('debug', 'index', 'reset', 'trace', 'vars'); + my %commands = - ('create' => {func => "Create", doc => "create: creates a new inode"}, - 'setup' => {func => "Setup", doc => "setup: initializes the environment"}, + ('status' => {func => "Status", doc => "status: show obd device status"}, + 'procsys' => {func => "Procsys", doc => "procsys (set /proc/sys/obd configuration)"}, + 'shell' => {func => "Shell", doc => "shell : execute shell-commands"}, + 'script' => {func => "Script", doc => "script : read and execute commands from a file"}, + 'insmod' => {func => "Insmod", doc => "insmod : insert kernel module"}, + 'rmmod' => {func => "Rmmod", doc => "rmmod : insert kernel module"}, + 'lsmod' => {func => "Lsmod", doc => "lsmod : list kernel modules"}, + 'device' => {func => "Device", doc => "device : open another OBD device"}, + 'close' => {func => "Close", doc => "close : close OBD device"}, + 'create' => {func => "Create", doc => "create [ [ [quiet]]]: create new object(s) (files, unless mode is given)"}, + 'attach' => {func => "Attach", doc => "attach { obdext2 | obdsnap snapdev snapidx tableno | obdscsi adapter bus tid lun }: attach this minor device to the specified driver" }, + 'detach' => {func => "Detach", doc => "detach this minor device"}, + 'testext2iterator' => {func => "TestExt2Iterator", doc => "test ext2 iterator function"}, + 'snapset' => {func => "SnapSetTable", doc => "snapset : set the table (created with snaptable) as table #tableno" }, + 'snapprint' => {func => "SnapPrint", doc => "snapprint : output the contents of table #tableno to the syslog"}, + 'snapdelete' => {func => "SnapDelete", doc => "snapdelete: delete connected snap obd objects from disk"}, + 'snaprestore' => {func => "SnapRestore", doc => "snaprestore : restore connected old snap objects to be current"}, + 'snaptable' => {func => "SnapShotTable", doc => "snaptable: build a snapshot table (interactive)"}, + 'copy' => {func => "Copy", doc => "copy : copy objects"}, + 'migrate' => {func => "Migrate", doc => "migrate : migrate data from one object to another"}, + 'partition' => {func => "Partition", doc => "partition : create a partition"}, + 'format' => {func => "Format", doc => "format : format a partition"}, + 'setup' => {func => "Setup", doc => "setup [type]: link this OBD device to the underlying device (default type obdext2)"}, + 'connect' => {func => "Connect", doc => "connect: allocates client ID for this session"}, + 'disconnect' => {func => "Disconnect", doc => "disconnect [id]: frees client resources"}, 'sync' => {func => "Sync", doc => "sync: flushes buffers to disk"}, - 'destroy' => {func => "Destroy", doc => "setup: destroys an inode"}, + 'destroy' => {func => "Destroy", doc => "destroy : destroys an object"}, + 'cleanup' => {func => "Cleanup", doc => "cleanup the minor obd device"}, 'dec_use_count' => {func => "Decusecount", doc => "decreases the module use count so that the module can be removed following an oops"}, - 'read' => {func => "Read", doc => "read [offset]"}, + 'read' => {func => "Read", doc => "read [offset]: read data from object"}, + 'fsread' => {func => "Read2", doc => "read [offset]: read data from object"}, + 'write' => {func => "Write", doc => "write : write data to object"}, + 'punch' => {func => "Punch", doc => "punch : punch a hole in object"}, + 'setattr' => {func => "Setattr", doc => "setattr [mode [uid [gid [size [atime [mtime [ctime]]]]]]]: sets object attributes"}, + 'getattr' => {func => "Getattr", doc => "getattr : displays object attributes"}, + 'preallocate' => {func => "Preallocate", doc => "preallocate [num]: requests preallocation of num objects."}, + 'statfs' => {func => "Statfs", doc => "statfs: filesystem status information"}, 'help' => {func => \&Help, doc => "help: this message"}, 'quit' => {func => \&Quit, doc => "see \"exit\""}, 'exit' => {func => \&Quit, doc => "see \"quit\""} ); # -# setup completion function +# setup completion function # my @jcm_cmd_list = keys %commands; -$attribs->{attempted_completion_function} = \&completeme; -#------------------------------------------------------------------------------ -# Open the device, as we need an FD for the ioctl -sysopen(DEV_OBD, $device, 0); +my $term, $attribs; + + +# Get going.... + +#Device($::device); -if (!defined($::st = stat($filesystem))) { - die "Unable to stat $filesystem.\n"; +sub readl { + if ( $file ) { + my $str = ; + chop($str); + return $str; + } else { + return $term->readline(@_); + } } -# Get on with the show -process_line(); + + +if ( $file ) { + while ( ) { + print $_; + my $rc = execute_line($_); + if ($rc != 0) { last; } + } + exit 0; +} else { + $term = new Term::ReadLine 'obdcontrol '; + $attribs = $term->Attribs; + $attribs->{attempted_completion_function} = \&completeme; + $term->ornaments('md,me,,'); # bold face prompt + + # make sure stdout is not buffered + STDOUT->autoflush(1); + + + # Get on with the show + process_line(); +} #------------------------------------------------------------------------------ sub completeme { my ($text, $line, $start, $end) = @_; if (substr($line, 0, $start) =~ /^\s*$/) { - $attribs->{completion_word} = \@jcm_cmd_list; - return $term->completion_matches($text, - $attribs->{'list_completion_function'}); + if ($] < 5.6) { # PErl version is less than 5.6.0 + return (exists $commands{$text}) ? $text : 0; +#Above line doesn't perform command completion, but +#perl5.005 Term-ReadLine lacks support for completion matching +#and perl5.6.0 requires glibc2.2.2 that won't run under Redhat6.2......sigh. + } + else { + $attribs->{completion_word} = \@jcm_cmd_list; + return $term->completion_matches($text, + $attribs->{'list_completion_function'}); + } } } @@ -88,7 +322,7 @@ sub find_command { my $name; my @completions = completeme($given, $given, 0, length($given)); if ($#completions == 0) { - $name = shift @completions; + $name = shift @completions; } return $name; @@ -105,206 +339,1450 @@ sub process_line { sub execute_line { my $line = shift; - my @arg = split(' ', $line); - my $word = shift @arg; + my @cmdline = split(' ', $line); + my $word = shift @cmdline; - my $cmd = find_command($word); + return 0 unless ($word); + + my $cmd; + if ( $file ) { + $cmd = $word; + } else { + $cmd = find_command($word); + } unless ($cmd) { - printf STDERR "$word: No such command, or not unique.\n"; - return (-1); + printf STDERR "$word: No such command, or not unique.\n"; + return (-1); } - if ($cmd eq "help" || $cmd eq "exit" || $cmd eq "quit") { - return (&{$commands{$cmd}->{func}}(@arg)); + # Call the function. + return (&{$commands{$cmd}->{func}}(@cmdline)); +} + +my %opendevfds = (); + +# select the OBD device we talk to +sub Device { + my $device = shift; + + if ( ! $device && ! $::device ) { # first time ever + $device = '/dev/obd0'; } - # Call the function. - return (&{$commands{$cmd}->{func}}(@arg)); + if (($device) && ($::device ne $device)) { + local *NEW_OBD; + my $newfd; + + if ($::client_id) { + print "Disconnecting active session ($::client_id)..."; + Disconnect($::client_id); + } + + if ($opendevfds{$device}) { + $::dev_obd = $opendevfds{$device}; + } + else { + # Open the device, as we need an FD for the ioctl + if (!sysopen(NEW_OBD, $device, 0)) { + print "Cannot open $device. Did you insert the obdclass module ?\n"; + return -1; + } + print "Opened device $device\n"; + $opendevfds{$device} = *NEW_OBD; + $::dev_obd = *NEW_OBD; + } + $::device = $device; + } + print "Current device is $::device\n"; + return 0; } -sub Setup { +sub Close { + my $device = shift; + my $fd2close; + + if ( ! $device && ! $::device ) { # first time ever + print "Nothing to close\n"; + return -1; + } + + if ( ! $device ) { + $device = $::device; + } + + if ($::device eq $device) { + if ($::client_id) { + print "Disconnecting active session ($::client_id)..."; + Disconnect($::client_id); + } + } + + $fd2close = $opendevfds{$device}; + if ($fd2close) { # XXXX something wrong in this if statement + close ($fd2close); + $opendevfds{$device} = undef; + print "Closed device $device\n"; + } + else { + print "Device $device was not open\n"; + return -1; + } + + if ($::device eq $device) { + $::dev_obd = undef; + $::device = undef; + } + print "No current device. You just closed the current device ($device).\n"; + return 0; +} + +sub Script { + my $cmdfilename = shift; + my $rc = 0; + if ( ! $cmdfilename ) { + print "please specify a command file name\n"; + return -1; + } + if (! open(CMDF, $cmdfilename)) { + print "Cannot open $cmdfilename: $!\n"; + return -1; + } + while () { + if (/^#/) { + next; + } + print "execute> $_"; + $rc = execute_line($_); + if ($rc != 0) { + print "Something went wrong .......command exit status: $rc\n"; + last; + } + } + close(CMDF); + return $rc; +} + +sub Shell { + my $user_shell=$ENV{'SHELL'}; + print "% $user_shell -c '@_'\n"; + if ( ! @_ ) { + print "please specify a shell command\n"; + return; + } + system("$user_shell -c '@_'"); + return ($? >> 8); +} + +sub Status { + my $oldfh = select(STDOUT); + $| = 1; + + system('cat /proc/lustre/obd/*/status'); + my $rc = ($? >> 8); + + select($oldfh); + $| = 0; + + return $rc; +} + +sub Procsys { + my $set_sysobd = shift; + my $value = shift; + + foreach $i (0 .. $#procsysobd_objects) { + my $sysobd = $procsysobd_objects[$i]; + + if (defined $set_sysobd) { + if ($sysobd ne $set_sysobd) { next; } + + if (defined $value) { # set this one + system("echo \"$value\" > /proc/sys/obd/$sysobd"); + } + system("echo \"/proc/sys/obd/$sysobd:\"; cat /proc/sys/obd/$sysobd"); + last; + } + else { + system("echo \"/proc/sys/obd/$sysobd:\"; cat /proc/sys/obd/$sysobd"); + } + } + return ($? >> 8); +} + +sub Insmod { + my $module = shift; + system("insmod $module"); + return ($? >> 8); +} + +sub Rmmod { + my $module = shift; + system("rmmod $module"); + return ($? >> 8); +} + +sub Lsmod { + my $module = shift; + system("lsmod $module"); + return ($? >> 8); +} + +sub Attach { my $err = 0; - my $packed = pack("L", $::st->rdev()); - my $rc = ioctl(DEV_OBD, &OBD_IOC_SETUP, $packed); + my $type = shift; + my $data; + my $datalen = 0; + + if ( ! $type ) { + print "error: missing type\n"; +usage: + print "usage: attach {obdext2 | obdsnap | obdscsi | obdtrace }\n"; + return -1; + } + + if ($type eq "obdscsi" ) { + my $adapter = shift; + my $bus = shift; + my $tid = shift; + my $lun = shift; + + $data = pack("iiii", $adapter, $bus, $tid, $lun); + $datalen = 4 * 4; + } elsif ($type eq "obdsnap" ) { + my $snapdev = shift; + my $snapidx = shift; + my $tableno = shift; + + $data = pack("iii", $snapdev, $snapidx, $tableno); + $datalen = 3 * 4; + } elsif ($type eq "obdext2") { + $data = pack("i", 4711); # bogus data + $datalen = 4; + } elsif ($type eq "obdtrace") { + $data = pack("i", 4711); # bogus data + $datalen = 4; + } else { + print "error: unknown attach type $type\n"; + goto usage; + } + + my $len = length($type); + my $cl = length($data); + + print "type $type (len $len), datalen $datalen ($cl)\n"; + my $packed = pack("Lipip", $::client_id, length($type), $type, $datalen, $data); + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_ATTACH, $packed); if (!defined $rc) { - print STDERR "ioctl failed: $!\n"; + print STDERR "ioctl failed: $!\n"; + return -1; } elsif ($rc eq "0 but true") { - print "Finished (success)\n"; + print "Finished (success)\n"; + return 0; } else { - print "ioctl returned error code $rc.\n"; + print "ioctl returned error code $rc.\n"; + return -1; } } -sub Create { + +sub Detach { + my $err = 0; + my $data = ""; + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + + my $rc = ioctl($::dev_obd, &OBD_IOC_DETACH, $data); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + + +sub TestExt2Iterator { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return; + } + + my $err = 0; + my $type = "obdext2"; + + $data = pack("i", 4711); # bogus data + $datalen = 4; + + my $len = length($type); + my $cl = length($data); + print "type $type (len $len), datalen $datalen ($cl)\n"; + my $packed = pack("Lipip", $::client_id, length($type), $type, $datalen, $data); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + + my $rc = ioctl($::dev_obd, &OBD_EXT2_RUNIT, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + + +sub SnapDelete { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + my $err = 0; + my $type = "obdsnap"; + + $data = pack("i", 4711); # bogus data + $datalen = 4; + + my $len = length($type); + my $cl = length($data); + print "type $type (len $len), datalen $datalen ($cl)\n"; + my $packed = pack("Lipip", $::client_id, length($type), $type, $datalen, $data); + + # XXX We need to fix this up so that after the objects in this snapshot + # are deleted, the snapshot itself is also removed from the table. + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + + my $rc = ioctl($::dev_obd, &OBD_SNAP_DELETE, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + + +# this routine does the whole job +sub SnapRestore { + my $restoreto = shift; + my $snaptable = shift; + my $tableno = shift; + my $restoretime; + + # don't do anything until connected + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + if ( ! $snaptable || ! defined $restoreto ) { + print "Usage: snaprestore \"restore to slot\" \"snaptable\" \"tableno\"\n"; + return -1; + } + + if ( ! -f $snaptable ) { + print "Table $snaptable doesn't exist\n"; + return -1; + } + + my $table = ReadSnapShotTable($snaptable); + $restoretime = FindSnapInTable($table, $restoreto); + if ( ! defined $table->{0} || ! defined $restoretime ) { + PrintSnapShotTable($table); + print "No current or $restoreto slot in this table\n"; + return -1; + } + + my $currentindex = $table->{0}; + if ( $table->{$restoretime} == $currentindex ) { + print "You should not restore to the current snapshot\n"; + return -1; + } + + # swap the entries for 0 and $restoreto + my $tmp = $table->{$restoretime}; + $table->{$restoretime} = $table->{0}; + $table->{0} = $tmp; + # PrintSnapShotTable($table); + + # write it back + WriteSnapShotTable($snaptable, $table); + + # set it in the kernel + SnapSetTable($tableno, $snaptable); + + # ready for the ioctl + my $err = 0; + my $type = "obdsnap"; + $data = pack("i", $currentindex); # slot of previous current snapshot + $datalen = 4; + + my $len = length($type); + my $cl = length($data); + my $packed = pack("Lipip", $::client_id, length($type), $type, $datalen, $data); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + + my $rc = ioctl($::dev_obd, &OBD_SNAP_RESTORE, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Snaprestore finished (success)\n"; + delete $table->{$restoretime} if defined $restoretime; + # write it back + WriteSnapShotTable($snaptable, $table); + + # set it in the kernel + SnapSetTable($tableno, $snaptable); + # PrintSnapShotTable($table); + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub FindSnapInTable { + my $table = shift; + my $snapno =shift; + + foreach my $restoretime ( keys %{$table} ) { + if ( $table->{$restoretime} == $snapno) { + print "Found key $restoretime for snapno $snapno\n"; + return $restoretime; + } + } + undef; +} + + +sub SnapPrint { + my $err = 0; + my $type = "obdsnap"; + my $snaptableno = shift; + + $data = pack("i", $snaptableno); + $datalen = 4; + + my $len = length($type); + my $cl = length($data); + print "type $type (len $len), datalen $datalen ($cl)\n"; + my $packed = pack("Lipip", $::client_id, length($type), $type, $datalen, $data); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + + my $rc = ioctl($::dev_obd, &OBD_SNAP_PRINTTABLE, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub SnapSetTable { + my $err = 0; + my $type = "obdsnap"; + my $snaptableno = shift; + my $file = shift; + my $snapcount; + my $table = {}; + my $data; + my $datalen = 0; + + if ( ! -f $file ) { + print "No such file $file\n"; + return -1; + } + + $table = ReadSnapShotTable($file); + + $snapcount = keys %{$table}; + print "Snapcount $snapcount\n"; + + if ( ! defined $table->{0} ) { + print "No current snapshot in table! First make one\n"; + return -1; + } + $data = pack("ii", $snaptableno, $snapcount); + $datalen = 2 * 4; + foreach my $time (sort keys %{$table}) { + # XXX we should change to pack LL instead of I for times + $data .= pack("Ii", $time, $table->{$time}); + $datalen += 8; + } + + my $len = length($type); + my $cl = length($data); + print "type $type (len $len), datalen $datalen ($cl)\n"; + my $packed = pack("Lipip", $::client_id, length($type), $type, $datalen, $data); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + + my $rc = ioctl($::dev_obd, &OBD_SNAP_SETTABLE, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + + +sub SnapShotTable { + + my $file = &readl("enter file name: "); + if ( ! -f $file ) { + `touch $file`; + } + my $table = ReadSnapShotTable($file); + + again: + PrintSnapShotTable($table); + my $action = &readl("Add, Delete or Quit [adq]: "); + goto done if ($action =~ "^q.*" ); + goto add if ($action =~ "^a.*"); + goto del if ($action =~ "^d.*"); + goto again; + + add: + my $idx = &readl("enter index where you want this snapshot: "); + my $time = &readl("enter time or 'now' or 'current': "); + my $oldtime = SnapFindTimeFromIdx($idx, $table); + if (defined $oldtime) { + print "This already exists, first clean up\n"; + goto again; + } + + if ( $time eq 'now' ) { + $time = time; + } elsif ( $time eq 'current' ) { + $time = 0; + } + $table->{$time} = $idx; + goto again; + + del: + $didx = &readl("Enter index to delete: "); + my $deltime = SnapFindTimeFromIdx($didx, $table); + delete $table->{$deltime} if defined $deltime; + goto again; + + done: + my $ok = &readl("OK with new table? [Yn]: "); + unless ( $ok eq "n" ) { + WriteSnapShotTable($file, $table); + } + return 0; +} + +sub SnapFindTimeFromIdx { + my $idx = shift; + my $table = shift; + + foreach my $time ( keys %{$table} ) { + if ( $table->{$time} == $idx ) { + return $time; + } + } + undef; +} + +sub PrintSnapShotTable { + my $table = shift; + my $time; + + foreach $time ( sort keys %{$table} ) { + my $stime = localtime($time); + if ( ! $time ) { + $stime = "current"; + } + printf "Time: %s -- Index %d\n", $stime, $table->{$time}; + } +} + +sub ReadSnapShotTable { + + my $file = shift; + my $table = {}; + + open FH, "<$file"; + while ( ) { + my ($time, $index) = split ; + $table->{$time} = $index; + } + close FH; + + PrintSnapShotTable($table); + + return $table; +} + +sub WriteSnapShotTable { + my $file = shift; + my $table = shift; + + open FH, ">$file"; + foreach my $time ( sort keys %{$table} ) { + print FH "$time $table->{$time}\n"; + } + close FH; +} + +sub Copy { + my $err = 0; + my $src_obdo; + my $dst_obdo; + + # Note: _copy IOCTL takes parameters as dst, src. + # Copy function takes parameters as src, dst. + $src_obdo->{id} = shift; + $dst_obdo->{id} = shift; + $src_obdo->{valid} = &OBD_MD_FLALL; + + # XXX need to fix copy so we can have 2 client IDs here + my $packed = pack("L", $::client_id) . obdo_pack($dst_obdo) . pack("L", $::client_id) . obdo_pack($src_obdo); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + + my $rc = ioctl($::dev_obd, &OBD_IOC_COPY, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Migrate { + my $err = 0; + + # Note: _migr IOCTL takes parameters as dst, src. + # Migrate function takes parameters as src, dst. + $src_obdo->{id} = shift; + $dst_obdo->{id} = shift; + $src_obdo->{valid} = &OBD_MD_FLALL; + + # We pack a dummy connection ID here + my $packed = pack("L", $::client_id) . obdo_pack($dst_obdo) . pack("L", $::client_id) . obdo_pack($src_obdo); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + + my $rc = ioctl($::dev_obd, &OBD_IOC_MIGR, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + + +sub Format { + my $err = 0; + my $size = shift; + my $data = pack("i", $size); + my $datalen = 4; + + my $packed = pack("ip", $datalen, $data); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_FORMATOBD, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Partition { + my $err = 0; + my $partno = shift; + my $size = shift; + my $data = pack("ii", $partno, $size); + my $datalen = 2 * 4; + + my $packed = pack("ip", $datalen, $data); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_PARTITION, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Setup { + my $err = 0; my $arg = shift; - my $quiet = shift; + my $data; + my $datalen = 0; + + # XXX we need a getinfo ioctl to validate parameters + # by type here + + if ($arg && !defined($::st = stat($arg))) { + print "$arg is not a valid device\n"; + return -1; + } + + if ( $arg ) { + $data = $arg; + $datalen = length($arg)+1; # need null character also + } + + my $packed = pack("ip", $datalen, $data); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_SETUP, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Cleanup { my $err = "0"; + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_CLEANUP, $err); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + $::client_id = 0; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + + +sub Connect { my $rc; - if (defined($quiet) && !($quiet eq "quiet")) { - print "syntax: create [number of objects [quiet]]\n"; - return; + my $packed = ""; + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; } + $rc = ioctl($::dev_obd, &OBD_IOC_CONNECT, $packed); + $id = unpack("I", $packed); - if (!defined($arg) || scalar($arg) < 2) { - print "Creating 1 object...\n"; - $rc = ioctl(DEV_OBD, &OBD_IOC_CREATE, $err); - if (!defined($quiet)) { - my $ino = unpack("L", $err); - print "Created object #$ino.\n"; - } + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + $::client_id = $id; + print "Client ID : $id\n"; + print "Finished (success)\n"; + return 0; } else { - my $i; - - print "Creating " . scalar($arg) . " objects...\n"; - for ($i = 0; $i < scalar($arg); $i++) { - $rc = ioctl(DEV_OBD, &OBD_IOC_CREATE, $err); - if (!($rc eq "0 but true") || $err < 0) { - last; - } elsif (!defined($quiet)) { - my $ino = unpack("L", $err); - print "Created object #$ino.\n"; - } + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Disconnect { + my $id = shift; + + if (!defined($id)) { + $id = $::client_id; + } + + if (!defined($id)) { + print "syntax: disconnect [client ID]\n"; + print "When client ID is not given, the last valid client ID to be returned by a\n"; + print "connect command this session is used; there is no such ID.\n"; + return -1; + } + + my $packed = pack("L", $id); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_DISCONNECT, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + $::client_id = undef; + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Create { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + my $num = shift; + my $mode = shift; + my $quiet = shift; + my $rc; + my $prealloc = 0; + + if (!defined($num)) { + $num = 1; + } + + if (!defined($mode)) { + $mode = 0100644; # create a file (rw-r--r--) if not specified + } + + if (scalar($num) < 1 || defined($quiet) && $quiet ne "quiet") { + print "usage: create [ [ [quiet]]]\n"; + return -1; + } + + my $i; + my $id = 0; # can't currently request IDs + + print "Creating " . scalar($num) . " object"; + if (scalar($num) > 1) { + print "s"; + } + print "\n"; + + for ($i = 0; $i < scalar($num); $i++) { + my $obdo; + $obdo->{id} = $id; + $obdo->{mode} = scalar($mode); + $obdo->{valid} = &OBD_MD_FLMODE; + + my $packed = pack("I", $::client_id) . obdo_pack($obdo); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; } + $rc = ioctl($::dev_obd, &OBD_IOC_CREATE, $packed); + if ($rc ne "0 but true") { + last; + } elsif (!defined($quiet)) { + $obdo = obdo_unpack($packed, 4); + print "Created object #$obdo->{id}.\n"; + } } if (!defined $rc) { - print STDERR "ioctl failed: $!\n"; + print STDERR "ioctl failed: $!\n"; + return -1; } elsif ($rc eq "0 but true") { - print "Finished (success)\n"; + print "Finished (success)\n"; + return 0; } else { - print "ioctl returned error code $rc.\n"; + print "ioctl returned error code $rc.\n"; + return -1; } } sub Sync { my $err = "0"; - my $rc = ioctl(DEV_OBD, &OBD_IOC_SYNC, $err); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_SYNC, $err); if (!defined $rc) { - print STDERR "ioctl failed: $!\n"; + print STDERR "ioctl failed: $!\n"; + return -1; } elsif ($rc eq "0 but true") { - print "Finished (success)\n"; + print "Finished (success)\n"; + return 0; } else { - print "ioctl returned error code $rc.\n"; + print "ioctl returned error code $rc.\n"; + return -1; } } sub Destroy { - my $arg = shift; + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } - if (!defined($arg) || scalar($arg) < 1) { - print "destroy requires the object number to destroy.\n"; - return; + my $id = shift; + + if (!defined($id) || scalar($id) < 1) { + print "usage: destroy \n"; + return -1; + } + + print "Destroying object $id...\n"; + my $packed = pack("IL", $::client_id, $id); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_DESTROY, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Getattr { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + my $id = shift; + + if (!defined($id) || scalar($id) < 1) { + print "invalid arguments; type \"help getattr\" for a synopsis\n"; + return -1; + } + + # see Setattr + my $obdo; + $obdo->{id} = $id; + $obdo->{valid} = &OBD_MD_FLALL; + my $packed = pack("L", $::client_id) . obdo_pack($obdo); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_GETATTR, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + $obdo = obdo_unpack($packed, 4); + obdo_print($obdo); + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Setattr { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; } - print "Destroying object $arg...\n"; - my $packed = pack("L", $arg); - my $rc = ioctl(DEV_OBD, &OBD_IOC_DESTROY, $packed); + my $id = shift; + + if (!defined($id) || scalar($id) < 1) { + print "invalid arguments; type \"help setattr\" for a synopsis\n"; + return -1; + } + + # XXX we do not currently set all of the fields in the obdo + my $obdo; + $obdo->{id} = $id; + $obdo->{mode} = oct(shift); + $obdo->{uid} = shift; + $obdo->{gid} = shift; + $obdo->{size} = shift; + $obdo->{atime} = shift; + $obdo->{mtime} = shift; + $obdo->{ctime} = shift; + $obdo->{valid} = 0; + + if (defined($obdo->{atime})) { + $obdo->{valid} |= &OBD_MD_FLATIME; + } + if (defined($obdo->{mtime})) { + $obdo->{valid} |= &OBD_MD_FLMTIME; + } + if (defined($obdo->{ctime})) { + $obdo->{valid} |= &OBD_MD_FLCTIME; + } + if (defined($obdo->{size})) { + $obdo->{valid} |= &OBD_MD_FLSIZE; + } + if (defined($obdo->{mode})) { + $obdo->{valid} |= &OBD_MD_FLMODE; + } + if (defined($obdo->{uid})) { + $obdo->{valid} |= &OBD_MD_FLUID; + } + if (defined($obdo->{gid})) { + $obdo->{valid} |= &OBD_MD_FLGID; + } + + printf "valid is %x, mode is %o\n", $obdo->{valid}, $obdo->{mode}; + my $packed = pack("L", $::client_id) . obdo_pack($obdo); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_SETATTR, $packed); if (!defined $rc) { - print STDERR "ioctl failed: $!\n"; + print STDERR "ioctl failed: $!\n"; + return -1; } elsif ($rc eq "0 but true") { - print "Finished (success)\n"; + print "Finished (success)\n"; + return 0; } else { - print "ioctl returned error code $rc.\n"; + print "ioctl returned error code $rc.\n"; + return -1; } } sub Read { - my $inode = shift; + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + my $id = shift; my $count = shift; my $offset = shift; + + if (!defined($id) || scalar($id) < 1 || !defined($count) || + $count < 1 || (defined($offset) && $offset < 0)) { + print "invalid arguments; type \"help read\" for a synopsis\n"; + return -1; + } - if (!defined($inode) || scalar($inode) < 1 || !defined($count) || - $count < 1 || (defined($offset) && $offset < 0)) { - print "invalid arguments; type \"help read\" for a synopsis\n"; - return; + if (!defined($offset)) { + $offset = 0; + } + + print("Reading $count bytes starting at byte $offset from object " . + "$id...\n"); + + # "allocate" a large enough buffer + my $buf = sprintf("%${count}s", " "); + die "suck" if (length($buf) != $count); + + my $obdo; + $obdo->{id} = $id; + + # the perl we're using doesn't support pack type Q, and offset is 64 bits + my $packed = pack("L", $::client_id) . obdo_pack($obdo) . + pack("p LL LL", $buf, $count, $offset); + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_READ, $packed); + + $retval = unpack("l", $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + if ($retval >= 0) { + print substr($buf, 0, $retval); + print "\nRead $retval of an attempted $count bytes.\n"; + print "Finished (success)\n"; + return 0; + } else { + print "Finished (error $retval)\n"; + return $retval; + } + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Read2 { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + my $id = shift; + my $count = shift; + my $offset = shift; + + if (!defined($id) || scalar($id) < 1 || !defined($count) || + $count < 1 || (defined($offset) && $offset < 0)) { + print "invalid arguments; type \"help read\" for a synopsis\n"; + return -1; } if (!defined($offset)) { - $offset = 0; + $offset = 0; } print("Reading $count bytes starting at byte $offset from object " . - "$inode...\n"); + "$id...\n"); # "allocate" a large enough buffer my $buf = sprintf("%${count}s", " "); die "suck" if (length($buf) != $count); - my $packed = pack("LpLLL", $inode, $buf, $count, 0, $offset); - my $rc = ioctl(DEV_OBD, &OBD_IOC_READ, $packed); + my $obdo; + $obdo->{id} = $id; - $retval = unpack("x4x4L", $packed); + # the perl we're using doesn't support pack type Q, and offset is 64 bits + my $packed = pack("L", $::client_id) . obdo_pack($obdo) . + pack("p LL LL", $buf, $count, $offset); + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_READ2, $packed); + + $retval = unpack("l", $packed); if (!defined $rc) { - print STDERR "ioctl failed: $!\n"; + print STDERR "ioctl failed: $!\n"; + return -1; } elsif ($rc eq "0 but true") { - if ($retval >= 0) { - print substr($buf, 0, $retval); - print "\nRead $retval of an attempted $count bytes.\n"; - print "Finished (success)\n"; - } else { - print "Finished (error $retval)\n"; - } + if ($retval >= 0) { + print substr($buf, 0, $retval); + print "\nRead $retval of an attempted $count bytes.\n"; + print "Finished (success)\n"; + return 0; + } else { + print "Finished (error $retval)\n"; + return $retval; + } } else { - print "ioctl returned error code $rc.\n"; + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Write { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + my $id = shift; + my $offset = shift; + my $text = join(' ', @_); + my $count = length($text); + + if (!defined($id) || scalar($id) < 1 || !defined($offset) || + scalar($offset) < 0) { + print "invalid arguments; type \"help write\" for a synopsis\n"; + return -1; + } + + if (!defined($text)) { + $text = ""; + $count = 0; + } + + print("Writing $count bytes starting at byte $offset to object $id...\n"); + + my $obdo; + $obdo->{id} = $id; + + # the perl we're using doesn't support pack type Q + my $packed = pack("L", $::client_id) . obdo_pack($obdo) . + pack("p LL LL", $text, $count, $offset); + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_WRITE, $packed); + + $retval = unpack("l", $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + if ($retval >= 0) { + print "\nWrote $retval of an attempted $count bytes.\n"; + print "Finished (success)\n"; + return 0; + } else { + print "Finished (error $retval)\n"; + return $retval; + } + } else { + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Punch { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + my $id = shift; + my $start = shift; + my $count = shift; + + if (!defined($id) || scalar($id) < 1 || !defined($start) || + scalar($start) < 0 || !defined($count) || scalar($count) < 0) { + print "invalid arguments; type \"help punch\" for a synopsis\n"; + return -1; + } + + print("Punching $count bytes starting at byte $start from object $id...\n"); + + my $obdo; + $obdo->{id} = $id; + + # the perl we're using doesn't support pack type Q + my $packed = pack("L", $::client_id) . obdo_pack($obdo) . + pack("p LL LL", $buf, $start, $count); + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_PUNCH, $packed); + + $retval = unpack("l", $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + } elsif ($rc eq "0 but true") { + if ($retval >= 0) { + print "\nPunched $retval of an attempted $count bytes.\n"; + print "Finished (success)\n"; + return 0; + } else { + print "Finished (error $retval)\n"; + return $retval; + } + } else { + print "ioctl returned error code $rc.\n"; + return -1; } } -# Unused for now sub Preallocate { - my $arg = shift; + my $num = shift; + + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } - if (!defined($arg) || scalar($arg) < 1 || scalar($arg) > 32) { - $arg = 32; + if (!defined($num) || scalar($num) < 1 || scalar($num) > 32) { + $num = 32; } - print "Preallocating $arg inodes...\n"; - my $packed = pack("Lx128", $arg); # alloc, inodes[32] - my $rc = ioctl(DEV_OBD, &OBD_IOC_PREALLOCATE, $packed); + print "Preallocating $num objects...\n"; + # client id, alloc, id[32] + my $packed = pack("LLx128", $::client_id, $num); + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_PREALLOCATE, $packed); if (!defined $rc) { - print STDERR "ioctl failed: $!\n"; + print STDERR "ioctl failed: $!\n"; + return -1; } elsif ($rc eq "0 but true") { - my $alloc = unpack("L", $packed); - my @inodes = unpack("L32", $packed); - my $i; + my $alloc = unpack("x4L", $packed); + my @ids = unpack("x8L32", $packed); + my $i; - print "Got $alloc inodes: "; - for ($i = 1; $i <= $alloc; ++$i) { - print $inodes[$i] . " "; - } - print "\nFinished (success)\n"; + print "Got $alloc objects: "; + foreach $i (@ids) { + print $i . " "; + } + print "\nFinished (success)\n"; + return 0; } else { - print "ioctl returned error code $rc.\n"; + print "ioctl returned error code $rc.\n"; + return -1; } } sub Decusecount { - my $rc = ioctl(DEV_OBD, &OBD_IOC_DEC_USE_COUNT, 0); + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_DEC_USE_COUNT, 0); if (!defined $rc) { - print STDERR "ioctl failed: $!\n"; + print STDERR "ioctl failed: $!\n"; + return -1; } elsif ($rc eq "0 but true") { - print "Finished (success)\n"; + print "Finished (success)\n"; + return 0; } else { - print "ioctl returned error code $rc.\n"; + print "ioctl returned error code $rc.\n"; + return -1; + } +} + +sub Statfs { + if (!defined($::client_id)) { + print "You must first ``connect''.\n"; + return -1; + } + + # struct statfs { + # long f_type; + # long f_bsize; + # long f_blocks; + # long f_bfree; + # long f_bavail; + # long f_files; + # long f_ffree; + # __kernel_fsid_t f_fsid; (64 bits) + # long f_namelen; + # long f_spare[6]; + # }; + + my $packed = pack("LLLLLLLIILL6", $::client_id, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0); + + if (! defined $::dev_obd) { + print "No current device.\n"; + return -1; + } + my $rc = ioctl($::dev_obd, &OBD_IOC_STATFS, $packed); + + if (!defined $rc) { + print STDERR "ioctl failed: $!\n"; + return -1; + } elsif ($rc eq "0 but true") { + # skip both the conn_id and the fs_type in the buffer + my ($bsize, $blocks, $bfree, $bavail, $files, $ffree) = + unpack("x4x4LLLLLL", $packed); + print("$bsize byte blocks: $blocks, " . ($blocks - $bfree) . " used, " . + "$bfree free ($bavail available).\n"); + print "$files files, " . ($files - $ffree) . " used, $ffree free.\n"; + print "Finished (success)\n"; + return 0; + } else { + print "ioctl returned error code $rc.\n"; + return -1; } } sub Help { - my $arg = shift; + my $cmd = shift; - if ( !$arg || !$commands{$arg} ) { - print "Comands: ", join( ' ', @jcm_cmd_list), "\n"; + if ( !$cmd || !$commands{$cmd} ) { + print "Comands: ", join( ' ', @jcm_cmd_list), "\n"; } else { - print "Usage: " . $commands{$arg}->{doc} . "\n"; + print "Usage: " . $commands{$cmd}->{doc} . "\n"; } + return 0; } sub Quit { + if ($::client_id) { + print "Disconnecting active session ($::client_id)..."; + Disconnect($::client_id); + } exit; }