#!/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" };
# p2ph generated invalid macros for ioctl stuff, so I override some of it here
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_SETUP_SUPER () { &_IOC(1, ord(\'f\'), 4, 4);}' unless
+ defined(&OBD_IOC_SETUP_SUPER);
+eval 'sub OBD_IOC_CLEANUP_SUPER () { &_IOC(0, ord(\'f\'), 5, 0);}' unless
+ defined(&OBD_IOC_CLEANUP_SUPER);
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_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\'), 5, 4);}' unless
+ defined(&OBD_IOC_SYNC);
eval 'sub ATTR_MODE () {1;}' unless defined(&ATTR_MODE);
eval 'sub ATTR_UID () {2;}' unless defined(&ATTR_UID);
# startup options (I'll replace these when I have some to replace with)
GetOptions("device=s" => \$device, "fs=s" => $filesystem) || die "Getoptions";
+# genuine new simulated OBD device
$device = "/dev/obd" unless $device;
+# object store in the ext2 formatted block device
$filesystem = "/dev/loop0" unless $filesystem;
# get a console for the app
my %commands =
('create' => {func => "Create", doc => "create: creates a new inode"},
- 'setup' => {func => "Setup", doc => "setup: initializes the environment"},
+ 'setup' => {func => "Setup", doc => "setup: link the ext2 partition (default /dev/loop0) to this obddev"},
'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"},
+ 'cleanup' => {func => "Cleanup", doc => "detach the superblock from this minor obd dev"},
'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 <inode> <count> [offset]"},
'write' => {func => "Write", doc => "write <inode> <offset> <text>"},
- 'setattr' => {func => "Setattr", doc => "setattr [mode [uid [gid [size [atime [mtime [ctime]]]]]]]"},
- 'getattr' => {func => "Getattr", doc => "getattr [inode]: displays inode object attributes"},
+ 'setattr' => {func => "Setattr", doc => "setattr <inode> [mode [uid [gid [size [atime [mtime [ctime]]]]]]]"},
+ 'getattr' => {func => "Getattr", doc => "getattr <inode>: displays inode object attributes"},
'preallocate' => {func => "Preallocate", doc => "preallocate [num]: requests preallocation of num inodes."},
'statfs' => {func => "Statfs", doc => "statfs: filesystem status information"},
'help' => {func => \&Help, doc => "help: this message"},
$attribs->{attempted_completion_function} = \&completeme;
#------------------------------------------------------------------------------
# Open the device, as we need an FD for the ioctl
-sysopen(DEV_OBD, $device, 0);
+sysopen(DEV_OBD, $device, 0) || die "Cannot open $device";
if (!defined($::st = stat($filesystem))) {
die "Unable to stat $filesystem.\n";
sub Setup {
my $err = 0;
my $packed = pack("L", $::st->rdev());
- my $rc = ioctl(DEV_OBD, &OBD_IOC_SETUP, $packed);
+ my $rc = ioctl(DEV_OBD, &OBD_IOC_SETUP_SUPER, $packed);
+
+ if (!defined $rc) {
+ print STDERR "ioctl failed: $!\n";
+ } elsif ($rc eq "0 but true") {
+ print "Finished (success)\n";
+ } else {
+ print "ioctl returned error code $rc.\n";
+ }
+}
+
+sub Cleanup {
+ my $err = "0";
+ my $rc = ioctl(DEV_OBD, &OBD_IOC_CLEANUP_SUPER, $err);
if (!defined $rc) {
print STDERR "ioctl failed: $!\n";
}
}
+
sub Connect {
my $id = 0;
my $ino = 0;
}
sub Destroy {
- if (!defined($id)) {
- $id = $::client_id;
+ if (!defined($::client_id)) {
+ print "You must first ``connect''.\n";
+ return;
}
my $arg = shift;
($valid, $mode, $uid, $gid, $size, $atime, $mtime, $ctime, $flags) =
unpack("ISssx2lLLLI", $packed);
- printf("Inode: %d Mode: %04d\n", $inode, $mode);
+ printf("Inode: %d Mode: %o\n", $inode, $mode);
printf("User: %6d Group: %6d Size: %d\n", $uid, $gid, $size);
printf("ctime: %08lx -- %s\n", $ctime, scalar(gmtime($ctime)));
printf("atime: %08lx -- %s\n", $atime, scalar(gmtime($atime)));
my $inode = shift;
my $valid = 0;
- my $mode = shift;
+ my $mode = oct(shift);
my $uid = shift;
my $gid = shift;
my $size = shift;
# time_t ia_ctime; (32)
# unsigned int ia_attr_flags; (32)
#};
+
+ printf "valid is %x, mode is %o\n", $valid, $mode;
my $packed = pack("ILLSssx2ILLLL", $::client_id, $inode, $valid, $mode,
$uid, $gid, $size, $atime, $mtime, $ctime, 0);
my $rc = ioctl(DEV_OBD, &OBD_IOC_SETATTR, $packed);
my $rc = ioctl(DEV_OBD, &OBD_IOC_READ, $packed);
- $retval = unpack("L", $packed);
+ $retval = unpack("l", $packed);
if (!defined $rc) {
print STDERR "ioctl failed: $!\n";
my $packed = pack("ILpLLL", $::client_id, $inode, $text, $count, 0, $offset);
my $rc = ioctl(DEV_OBD, &OBD_IOC_WRITE, $packed);
- $retval = unpack("L", $packed);
+ $retval = unpack("l", $packed);
if (!defined $rc) {
print STDERR "ioctl failed: $!\n";
git://git.whamcloud.com / fs / lustre-release.git / blobdiff