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# mount-lib.pl
# Functions for handling the /etc/[v]fstab file. Some functions are defined in
# here, and some in OS-specific files named <os_type>-lib.pl
BEGIN { push(@INC, ".."); };
use WebminCore;
&init_config();
%access = &get_module_acl();
$filesystem_users_file = "$module_config_directory/filesystem-users";
@access_fs = split(/\s+/, $access{'fs'});
# get_mount(directory|'swap', device)
# Returns the index of this mount, or -1 if not known
sub get_mount
{
local(@mlist, $p, $d, $i);
@mlist = &list_mounts();
for($i=0; $i<@mlist; $i++) {
$p = $mlist[$i];
if ($_[0] eq "*" && $p->[1] eq $_[1]) {
# found by match on device
return $i;
}
elsif ($_[1] eq "*" && $p->[0] eq $_[0]) {
# found by match on directory
return $i;
}
elsif ($p->[0] eq $_[0] && $p->[1] eq $_[1]) {
# found by match on both
return $i;
}
}
return -1;
}
# get_mounted(directory|'swap', device)
# Returns the index of this current mount, or -1 if not known
sub get_mounted
{
local(@mlist, $p, $d, $i);
@mlist = &list_mounted();
for($i=0; $i<@mlist; $i++) {
$p = $mlist[$i];
if ($_[0] eq "*" && $p->[1] eq $_[1]) {
# found by match on device
return $i;
}
elsif ($_[1] eq "*" && $p->[0] eq $_[0]) {
# found by match on directory
return $i;
}
elsif ($p->[0] eq $_[0] && $p->[1] eq $_[1]) {
# found by match on both
return $i;
}
}
return -1;
}
# parse_options(type, options)
# Convert an options string for some filesystem into the associative
# array %options
sub parse_options
{
local($_);
undef(%options);
if ($_[1] ne "-") {
foreach (split(/,/, $_[1])) {
if (/^([^=]+)=(.*)$/) { $options{$1} = $2; }
else { $options{$_} = ""; }
}
}
return \%options;
}
# join_options(type, [&hash])
# Returns a string constructed from the %options hash
sub join_options
{
local $h = $_[1] || \%options;
local (@rv, $k);
foreach $k (keys %$h) {
push(@rv, $h->{$k} eq "" ? $k : $k."=".$h->{$k});
}
return @rv ? join(",", @rv) : "-";
}
# swap_form(path)
# This function should be called by os-specific code to display a form
# asking for the size of a swap file to create. The form will be submitted
# to a creation program, and then redirected back to the original mount cgi
sub swap_form
{
local ($file) = @_;
&ui_print_header(undef, "Create Swap File", "");
print &ui_form_start("create_swap.cgi");
foreach my $k (keys %in) {
print &ui_hidden($k, $in{$k});
}
print &ui_hidden("cswap_file", $file);
print &text('cswap_file', "<tt>$file</tt>"),"<p>\n";
print $text{'cswap_size'},"\n";
print &ui_textbox("cswap_size", undef, 6)," ",
&ui_select("cswap_units", "m",
[ [ "m", "MB" ], [ "g", "GB" ], [ "t", "TB" ] ])."\n";
print &ui_form_end([ [ undef, $text{'create'} ] ]);
&ui_print_footer("", $text{'index_return'});
exit;
}
# nfs_server_chooser_button(input, [form])
sub nfs_server_chooser_button
{
local($form);
$form = @_ > 1 ? $_[1] : 0;
if ($access{'browse'}) {
return "<input type=button onClick='ifield = document.forms[$form].$_[0]; nfs_server = window.open(\"../$module_name/nfs_server.cgi\", \"nfs_server\", \"toolbar=no,menubar=no,scrollbars=yes,width=400,height=300\"); nfs_server.ifield = ifield; window.ifield = ifield' value=\"...\">\n";
}
return undef;
}
# nfs_export_chooser_button(serverinput, exportinput, [form])
sub nfs_export_chooser_button
{
local($form);
$form = @_ > 2 ? $_[2] : 0;
if ($access{'browse'}) {
return "<input type=button onClick='if (document.forms[$form].$_[0].value != \"\") { ifield = document.forms[$form].$_[1]; nfs_export = window.open(\"../$module_name/nfs_export.cgi?server=\"+document.forms[$form].$_[0].value, \"nfs_export\", \"toolbar=no,menubar=no,scrollbars=yes,width=500,height=200\"); nfs_export.ifield = ifield; window.ifield = ifield }' value=\"...\">\n";
}
return undef;
}
# smb_server_chooser_button(serverinput, [form])
sub smb_server_chooser_button
{
local($form);
$form = @_ > 1 ? $_[1] : 0;
if (&has_command($config{'smbclient_path'}) && $access{'browse'}) {
return "<input type=button onClick='ifield = document.forms[$form].$_[0]; smb_server = window.open(\"../$module_name/smb_server.cgi\", \"smb_server\", \"toolbar=no,menubar=no,scrollbars=yes,width=400,height=300\"); smb_server.ifield = ifield; window.ifield = ifield' value=\"...\">\n";
}
return undef;
}
# smb_share_chooser_button(serverinput, shareinput, [form])
sub smb_share_chooser_button
{
local($form);
$form = @_ > 2 ? $_[2] : 0;
if (&has_command($config{'smbclient_path'}) && $access{'browse'}) {
return "<input type=button onClick='if (document.forms[$form].$_[0].value != \"\") { ifield = document.forms[$form].$_[1]; smb_share = window.open(\"../$module_name/smb_share.cgi?server=\"+document.forms[$form].$_[0].value, \"smb_share\", \"toolbar=no,menubar=no,scrollbars=yes,width=400,height=300\"); smb_share.ifield = ifield; window.ifield = ifield }' value=\"...\">\n";
}
return undef;
}
# Include the correct OS-specific functions file
if ($gconfig{'os_type'} =~ /^\S+\-linux$/) {
do "linux-lib.pl";
}
else {
do "$gconfig{'os_type'}-lib.pl";
}
# can_edit_fs(dir, device, type, options, [is-new])
# Returns 1 if a filesystem can be edited, 0 otherwise
sub can_edit_fs
{
local $ok = 1;
if (@access_fs) {
local $d;
foreach $d (@access_fs) {
$ok = 0 if (!&is_under_directory($d, $_[0]));
}
}
$ok = 0 if (!&can_fstype($_[2]));
if ($access{'user'} && !$_[4]) {
local $users = &get_filesystem_users();
$ok = 0 if ($users->{$_[0]} ne $remote_user);
}
return $ok;
}
# can_fstype(type)
sub can_fstype
{
return 1 if (!$access{'types'});
local @types = split(/\s+/, $access{'types'});
return &indexof($_[0], @types) >= 0;
}
# compile_program(name, default-arch)
# Ensures that some C program is compiled and copied to /etc/webmin . Uses the
# supplied native versions if possible
sub compile_program
{
return if (-r "$module_config_directory/$_[0]" &&
&execute_command("$module_config_directory/$_[0]", undef, undef, undef, 0, 1) == 0);
local $arch = &backquote_command("uname -m");
$arch =~ s/\r|\n//g;
local $re = $_[1];
if ($re && $arch =~ /^$re$/i && -r "$module_root_directory/$_[0]" &&
&execute_command("$module_root_directory/$_[0]", undef, undef, undef, 0, 1) == 0) {
# Compiled program for this architecture already exists and is working,
# so can just copy
&execute_command("cp $module_root_directory/$_[0] $module_config_directory/$_[0]");
}
else {
# Need to compile
local ($cc) = (&has_command("gcc") || &has_command("cc") ||
&has_command("gcc-4.0") || &has_command("gcc-3.3"));
$cc || &error($text{'egcc'});
local $out = &backquote_logged("$cc -o $module_config_directory/$_[0] $module_root_directory/$_[0].c 2>&1");
if ($?) {
&error(&text('ecompile', "<pre>$out</pre>"));
}
}
&set_ownership_permissions(undef, undef, 0755,"$module_config_directory/$_[0]");
}
# get_filesystem_users()
# Returns a mapping between filesystems and their owners
sub get_filesystem_users
{
local %users;
&read_file($filesystem_users_file, \%users);
return \%users;
}
# save_filesystem_users(&usermap)
# Saves the filesystem owner mapping
sub save_filesystem_users
{
&write_file($filesystem_users_file, $_[0]);
}
# can_delete_directory(mount-point)
# Returns 1 if some directory should be deleted when un-mounting
sub can_delete_directory
{
local @dirs = split(/\s+/, $config{'delete_under'});
return 0 if (!@dirs);
return 0 if ($_[0] eq "swap");
local $d;
foreach $d (@dirs) {
return 1 if (&is_under_directory($d, $_[0]));
}
return 0;
}
# delete_unmounted(dir, device)
# If some directory is no longer in the permanent mount list, delete it if it
# is under the list of dirs to auto-delete
sub delete_unmounted
{
if (&can_delete_directory($_[0]) &&
&get_mount($_[0], $_[1]) < 0) {
&system_logged("rmdir ".quotemeta($_[0]));
}
}
# remount_dir(directory, device, type, options)
# Adjusts the options for some mounted filesystem
sub remount_dir
{
if (defined(&os_remount_dir)) {
return &os_remount_dir(@_);
}
else {
local $err = &unmount_dir(@_);
return $err if ($err);
return &mount_dir(@_);
}
}
# filesystem_for_dir(dir)
# Give a directory, returns the details filesystem it is on (dir, device,
# type, options)
sub filesystem_for_dir
{
local @stdir = stat($_[0]);
foreach my $m (&list_mounted()) {
local @stm = stat($m->[0]);
if ($stm[0] == $stdir[0]) {
# Save device number!
return @$m;
}
}
return ( );
}
# local_disk_space([&always-count])
# Returns the total local and free disk space on the system.
sub local_disk_space
{
my ($always) = @_;
my ($total, $free) = (0, 0);
my @mounted = &mount::list_mounted();
my %donezone;
my %donevzfs;
my %donedevice;
# Get list of zone pools
my %zpools = ( 'zones' => 1, 'zroot' => 1 );
if (&has_command("zpool")) {
my @out = &backquote_command("zpool list");
foreach my $l (@out) {
if (/^(\S+)\s+\d/) {
$zpools{$1} = 1;
}
}
}
# Add up all local filesystems
foreach $m (@mounted) {
if ($m->[2] =~ /^ext/ ||
$m->[2] eq "reiserfs" || $m->[2] eq "ufs" ||
$m->[2] eq "zfs" || $m->[2] eq "simfs" || $m->[2] eq "vzfs" ||
$m->[2] eq "xfs" || $m->[2] eq "jfs" ||
$m->[1] =~ /^\/dev\// ||
&indexof($m->[1], @$always) >= 0) {
if ($m->[1] =~ /^([^\/]+)\/([^\/]+)/ &&
$m->[2] eq "zfs" && $zpools{$1} && $donezone{$1,$2}++) {
# Don't double-count maps from the same zone pool
next;
}
if ($donedevice{$m->[0]}++ ||
$donedevice{$m->[1]}++) {
# Don't double-count mounts from the same device, or
# on the same directory.
next;
}
my ($t, $f) = &mount::disk_space($m->[2], $m->[0]);
if (($m->[2] eq "simfs" || $m->[2] eq "vzfs" ||
$m->[0] eq "/dev/vzfs") &&
$donevzfs{$t,$f}++) {
# Don't double-count VPS filesystems
next;
}
$total += $t*1024;
$free += $f*1024;
}
}
return ($total, $free);
}
1;
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