irix-lib.pl

Unix下基于Web的管理工具

# irix-lib.pl
# Filesystem functions for IRIX

# Return information about a filesystem, in the form:
#  directory, device, type, options, fsck_order, mount_at_boot
# If a field is unused or ignored, a - appears instead of the value.
# Swap-filesystems (devices or files mounted for VM) have a type of 'swap',
# and 'swap' in the directory field
sub list_mounts
{
local(@rv, @p, $_, $i); $i = 0;
open(FSTAB, $config{'fstab_file'});
while(<FSTAB>) {
	chop; s/#.*$//g;
	if (!/\S/) { next; }
	@p = split(/\s+/, $_);
	if ($p[3] eq "swap") { $p[2] = "swap"; }
	$rv[$i++] = [ $p[1], $p[0], $p[2], $p[3], $p[5], 1 ];
	}
close(FSTAB);
return @rv;
}


# create_mount(directory, device, type, options, fsck_order, mount_at_boot)
# Add a new entry to the fstab file, and return the index of the new entry
sub create_mount
{
local($len, @mlist, $fcsk, $dir);
if ($_[2] eq "autofs") {
	# An autofs mount.. add to /etc/auto_master
	$len = grep { $_->[2] eq "autofs" } (&list_mounts());
	open(AUTOTAB, ">> $config{autofs_file}");
	print AUTOTAB "$_[0] $_[1]",($_[3] eq "-" ? "" : " -$_[3]"),"\n";
	close(AUTOTAB);
	}
else {
	# Add to the fstab file
	$len = grep { $_->[2] ne "autofs" } (&list_mounts());
	open(FSTAB, ">> $config{fstab_file}");
	if ($_[2] eq "ufs" || $_[2] eq "s5fs") {
		($fsck = $_[1]) =~ s/\/dsk\//\/rdsk\//g;
		}
	else { $fsck = "-"; }
	if ($_[2] eq "swap") { $dir = "-"; }
	else { $dir = $_[0]; }
	print FSTAB "$_[1]  $fsck  $dir  $_[2]  $_[4]  $_[5]  $_[3]\n";
	close(FSTAB);
	}
return $len;
}


# delete_mount(index)
# Delete some mount from the table
sub delete_mount
{
local(@fstab, $i, $line, $_);
open(FSTAB, $config{fstab_file});
@fstab = <FSTAB>;
close(FSTAB);
$i = 0;

open(FSTAB, "> $config{fstab_file}");
foreach (@fstab) {
	chop; ($line = $_) =~ s/#.*$//g;
	if ($line =~ /\S/ && $i++ == $_[0]) {
		# found the line not to include
		}
	else { print FSTAB $_,"\n"; }
	}
close(FSTAB);

open(AUTOTAB, $config{autofs_file});
@autotab = <AUTOTAB>;
close(AUTOTAB);
open(AUTOTAB, "> $config{autofs_file}");
foreach (@autotab) {
	chop; ($line = $_) =~ s/#.*$//g;
	if ($line =~ /\S/ && $line !~ /^[+\-]/ && $i++ == $_[0]) {
		# found line not to include..
		}
	else { print AUTOTAB $_,"\n"; }
	}
close(AUTOTAB);
}


# change_mount(num, directory, device, type, options, fsck_order, mount_at_boot)
# Change an existing permanent mount
sub change_mount
{
local(@fstab, @autotab, $i, $line, $fsck, $dir, $_);
$i = 0;

open(FSTAB, $config{fstab_file});
@fstab = <FSTAB>;
close(FSTAB);
open(FSTAB, "> $config{fstab_file}");
foreach (@fstab) {
	chop; ($line = $_) =~ s/#.*$//g;
	if ($line =~ /\S/ && $i++ == $_[0]) {
		# Found the line to replace
		if ($_[3] eq "ufs" || $_[3] eq "s5fs") {
			($fsck = $_[2]) =~ s/\/dsk\//\/rdsk\//g;
			}
		else { $fsck = "-"; }
		if ($_[3] eq "swap") { $dir = "-"; }
		else { $dir = $_[1]; }
		print FSTAB "$_[2]  $fsck  $dir  $_[3]  $_[5]  $_[6]  $_[4]\n";
		}
	else { print FSTAB $_,"\n"; }
	}
close(FSTAB);

open(AUTOTAB, $config{autofs_file});
@autotab = <AUTOTAB>;
close(AUTOTAB);
open(AUTOTAB, "> $config{autofs_file}");
foreach (@autotab) {
	chop; ($line = $_) =~ s/#.*$//g;
	if ($line =~ /\S/ && $line !~ /^[+\-]/ && $i++ == $_[0]) {
		# Found the line to replace
		print AUTOTAB "$_[1]  $_[2]  ",
				($_[4] eq "-" ? "" : "-$_[4]"),"\n";
		}
	else { print AUTOTAB $_,"\n"; }
	}
close(AUTOTAB);
}


# list_mounted()
# Return a list of all the currently mounted filesystems and swap files.
# The list is in the form:
#  directory device type options
# For swap files, the directory will be 'swap'
sub list_mounted
{
local(@rv, @p, $_, $i, $r);
foreach (split(/\n/, `cat /etc/mtab`)) {
	s/#.*$//g; if (!/\S/) { next; }
	@p = split(/\s+/, $_);
	push(@rv, [ $p[1], $p[0], $p[2], $p[3] ]);
	}
return @rv;
}


# mount_dir(directory, device, type, options)
# Mount a new directory from some device, with some options. Returns 0 if ok,
# or an error string if failed. If the directory is 'swap', then mount as
# virtual memory.
sub mount_dir
{
local($out, $opts);
if ($_[0] eq "swap") {
	# Adding a swap device
	$out = `swap -a $_[1] 2>&1`;
	if ($?) { return $out; }
	}
else {
	# Mounting a directory
	if ($_[2] eq "cachefs") {
		# Mounting a caching filesystem.. need to create cache first
		local(%options);
		&parse_options("cachefs", $_[3]);
		if (!(-r "$options{cachedir}/.cfs_resource")) {
			# The cache directory does not exist.. set it up
			if (-d $options{cachedir} &&
			    !rmdir($options{"cachedir"})) {
				return "The directory $options{cachedir} ".
				       "already exists. Delete it";
				}
			$out = `cfsadmin -c $options{cachedir} 2>&1`;
			if ($?) { return $out; }
			}
		}
	if ($_[2] eq "rumba") {
		# call 'rumba' to mount
		local(%options, $shortname, $shar, $opts, $rv);
		&parse_options("rumba", $_[3]);
		$shortname = hostname();
		if ($shortname =~ /^([^\.]+)\.(.+)$/) { $shortname = $1; }
		$_[1] =~ /^\\\\(.+)\\(.+)$/;
		$shar = "//".($options{machinename} ?$options{machinename} :$1).
			"/$2";
		$opts = ("-s $1 ").
		 (defined($options{'clientname'}) ?
			"-c $options{'clientname'} " : "-c $shortname ").
		 (defined($options{'username'}) ?
			"-U $options{'username'} " : "").
		 (defined($options{'uid'}) ? "-u $options{'uid'} " : "").
		 (defined($options{'gid'}) ? "-g $options{'gid'} " : "").
		 (defined($options{'fmode'}) ? "-f $options{'fmode'} " : "").
		 (defined($options{'dmode'}) ? "-d $options{'dmode'} " : "").
		 (defined($options{'noupper'}) ? "-C " : "").
		 (defined($options{'password'}) ?
			"-P $options{'password'} " : "-n ").
		 (defined($options{'readwrite'}) ? "-S " : "").
		 (defined($options{'readonly'}) ? "-w " : "").
		 (defined($options{'attr'}) ? "-e " : "");
		$rv = system("rumba \"$shar\" $_[0] $opts >/tmp/$$.rumba 2>&1 </dev/null");
		$out = `cat /tmp/$$.rumba`; unlink("/tmp/$$.rumba");
		if ($rv) { return "<pre>$out</pre> : rumba \"$shar\" $_[0] $opts"; }
		}
	else {
		$opts = $_[3] eq "-" ? "" : "-o \"$_[3]\"";
		$out = `mount -F $_[2] $opts -- $_[1] $_[0] 2>&1`;
		if ($?) { return $out; }
		}
	}
return 0;
}


# unmount_dir(directory, device, type)
# Unmount a directory (or swap device) that is currently mounted. Returns 0 if
# ok, or an error string if failed
sub unmount_dir
{
if ($_[0] eq "swap") {
	$out = `swap -d $_[1] 2>&1`;
	}
elsif ($_[2] eq "rumba") {
	# kill the process (if nobody is in the directory)
	$dir = $_[0];
	if (`fuser -c $_[0] 2>/dev/null` =~ /\d/) { return "$_[0] is busy"; }
	if (`cat /etc/mnttab` =~ /rumba-(\d+)\s+$dir\s+nfs/) {
		kill('TERM', $1) || return "Failed to kill rumba";
		}
	else { return "Failed to find rumba pid"; }
	sleep(1);
	}
else {
	$out = `umount $_[0] 2>&1`;
	}
if ($?) { return $out; }
return 0;
}


# disk_space(type, directory)
# Returns the amount of total and free space for some filesystem, or an
# empty array if not appropriate.
sub disk_space
{
if (&get_mounted($_[1], "*") < 0) { return (); }
if ($_[0] eq "fd" || $_[0] eq "proc" || $_[0] eq "swap" || $_[0] eq "autofs") {
	return ();
	}
`df -k $_[1]` =~ /Mounted on\n\S+\s+(\S+)\s+\S+\s+(\S+)/;
return ($1, $2);
}


# list_fstypes()
# Returns an array of all the supported filesystem types. If a filesystem is
# found that is not one of the supported types, generate_location() and
# generate_options() will not be called for it.
sub list_fstypes
{
return ("ufs", "nfs", "hsfs", "pcfs", "lofs", "cachefs", "swap",
	"tmpfs", "autofs");
}


# fstype_name(type)
# Given a short filesystem type, return a human-readable name for it
sub fstype_name
{
local(%fsmap);
%fsmap = ("ufs","Solaris Unix Filesystem",
	  "nfs","Network Filesystem",
	  "hsfs","ISO9660 CD-ROM",
	  "pcfs","MS-DOS Filesystem",
	  "lofs","Loopback Filesystem",
	  "cachefs","Caching Filesystem",
	  "swap","Virtual Memory",
	  "tmpfs","Ram Disk",
	  "autofs","Automounter Filesystem",
	  "proc","Process Image Filesystem",
	  "fd","File Descriptor Filesystem",
	  "rumba","Windows Networking Filesystem");
return $config{long_fstypes} && $fsmap{$_[0]} ? $fsmap{$_[0]} : uc($_[0]);
}


# mount_modes(type)
# Given a filesystem type, returns 4 numbers that determine how the file
# system can be mounted, and whether it can be fsck'd
sub mount_modes
{
if ($_[0] eq "ufs" || $_[0] eq "cachefs" || $_[0] eq "s5fs") {
	return (2, 1, 1, 0);
	}
elsif ($_[0] eq "rumba") { return (0, 1, 0, 0); }
else { return (2, 1, 0, 0); }
}


# multiple_mount(type)
# Returns 1 if filesystems of this type can be mounted multiple times, 0 if not
sub multiple_mount
{
return ($_[0] eq "nfs" || $_[0] eq "tmpfs" || $_[0] eq "cachefs" ||
        $_[0] eq "autofs" || $_[0] eq "lofs" || $_[0] eq "rumba");
}


# generate_location(type, location)
# Output HTML for editing the mount location of some filesystem.
sub generate_location
{
if ($_[0] eq "nfs") {
	# NFS mount from some host and directory
	if ($_[1] =~ /^nfs:/) { $nfsmode = 2; }
	elsif (!$_[1] || $_[1] =~ /^([A-z0-9\-\.]+):([^,]+)$/) {
		$nfsmode = 0; $nfshost = $1; $nfspath = $2;
		}
	else { $nfsmode = 1; }
	if ($gconfig{'os_version'} >= 2.6) {
		# Solaris 2.6 can list multiple NFS servers in mount
		print "<tr> <td><b>NFS Source</b></td>\n";
		printf "<td><input type=radio name=nfs_serv value=0 %s>\n",
			$nfsmode == 0 ? "checked" : "";
		print "<b>NFS Hostname</b></td>\n";
		print "<td><input name=nfs_host size=20 value=\"$nfshost\">\n";
		&nfs_server_chooser_button("nfs_host");
		print "&nbsp;<b>NFS Directory</b>\n";
		print "<input name=nfs_dir size=20 value=\"$nfspath\">\n";
		&nfs_export_chooser_button("nfs_host", "nfs_dir");
		print "</td> </tr>\n";

		print "<tr> <td></td>\n";
		printf "<td><input type=radio name=nfs_serv value=1 %s>\n",
			$nfsmode == 1 ? "checked" : "";
		print "<b>Multiple NFS Servers</b></td>\n";
		printf "<td><input name=nfs_list size=40 value=\"%s\">\n",
			$nfsmode == 1 ? $_[1] : "";
		print "</td> </tr>\n";

		if ($gconfig{'os_version'} >= 7) {
			print "<tr> <td></td> <td>\n";
			printf "<input type=radio name=nfs_serv value=2 %s>\n",
				$nfsmode == 2 ? "checked" : "";
			print "<b>WebNFS URL</b></td> <td>\n";
			printf "<input name=nfs_url size=40 value=\"%s\">\n",
				$nfsmode == 2 ? $_[1] : "";
			print "</td> </tr>\n";
			}
		}
	else {
		print "<tr> <td><b>NFS Hostname</b></td>\n";
		print "<td><input name=nfs_host size=20 value=\"$nfshost\">\n";
		&nfs_server_chooser_button("nfs_host");
		print "</td>\n";
		print "<td><b>NFS Directory</b></td>\n";
		print "<td><input name=nfs_dir size=20 value=\"$nfspath\">\n";
		&nfs_export_chooser_button("nfs_host", "nfs_dir");
		print "</td> </tr>\n";
		}
	}
elsif ($_[0] eq "tmpfs") {
	# Location is irrelevant for tmpfs filesystems