=head1 linux-lib.pl
Quota functions for all linux version. See quota-lib.pl for summary
documentation for this module.
=cut
# Tell the mount module not to check which filesystems are supported,
# as we don't care for the calls made by this module
$mount::no_check_support = 1;
# Pass UIDs and GIDs to edquota instead of names
$edquota_use_ids = 1;
=head2 quotas_init
Returns an error message if some quota commands or functionality is missing
on this system, undef otherwise.
=cut
sub quotas_init
{
if (&has_command("quotaon") && &has_command("quotaoff")) {
return undef;
}
else {
return "The quotas package does not appear to be installed on ".
"your system\n";
}
}
=head2 quotas_supported
Checks what quota types this OS supports. Returns 1 for user quotas,
2 for group quotas or 3 for both.
=cut
sub quotas_supported
{
return 3;
}
=head2 free_space(filesystem, [blocksize])
Finds the amount of free disk space on some system. Returns an array
containing : blocks-total, blocks-free, files-total, files-free
=cut
sub free_space
{
local(@out, @rv);
&clean_language();
$out = &backquote_command("df -k $_[0]");
$out =~ /Mounted on\n\S+\s+(\d+)\s+\d+\s+(\d+)/;
if ($_[1]) {
push(@rv, int($1*1024/$_[1]), int($2*1024/$_[1]));
}
else {
push(@rv, $1, $2);
}
$out = &backquote_command("df -i $_[0]");
$out =~ /Mounted on\n\S+\s+(\d+)\s+\d+\s+(\d+)/;
push(@rv, $1, $2);
&reset_environment();
return @rv;
}
=head2 quota_can(&mnttab, &fstab)
Can this filesystem support quotas, based on mount options in fstab?
Takes array refs from mounted and mountable filesystems, and returns one of
the following :
=item 0 - No quota support (or not turned on in /etc/fstab).
=item 1 - User quotas only.
=item 2 - Group quotas only.
=item 3 - User and group quotas.
=cut
sub quota_can
{
my %exclude_mounts;
if (&has_command("findmnt")) {
%exclude_mounts = map { $_ => 1 } split( /\n/m, backquote_command('findmnt -r | grep -oP \'^(\S+)(?=.*\[\/)\'') );
}
# Not possible on bind mounts
if ($_[0]->[2] =~ /^bind/ ||
exists($exclude_mounts{$_[0]->[0]}) && $_[0]->[2] !~ /^simfs/) {
return 0;
}
return ( $_[1]->[3] =~ /usrquota|usrjquota/ || $_[0]->[3] =~ /usrquota|usrjquota/ ? 1 : 0 ) +
( $_[1]->[3] =~ /grpquota|grpjquota/ || $_[0]->[3] =~ /grpquota|grpjquota/ ? 2 : 0 );
}
=head2 quota_now(&mnttab, &fstab)
Are quotas currently active? Takes array refs from mounted and mountable
filesystems, and returns one of the following :
=item 0 - Not active.
=item 1 - User quotas active.
=item 2 - Group quotas active.
=item 3 - Both active.
Adding 4 means they cannot be turned off (such as for XFS)
=cut
sub quota_now
{
local $rv = 0;
local $dir = $_[0]->[0];
local %opts = map { $_, 1 } split(/,/, $_[0]->[3]);
local $ufile = $_[1]->[3] =~ /(usrquota|usrjquota)=([^, ]+)/ ? $2 : undef;
local $gfile = $_[1]->[3] =~ /(grpquota|grpjquota)=([^, ]+)/ ? $2 : undef;
if ($_[0]->[2] eq "xfs") {
# For XFS, assume enabled if setup in mtab
$rv += 1 if ($opts{'quota'} || $opts{'usrquota'} ||
$opts{'uqnoenforce'} || $opts{'uquota'});
$rv += 2 if ($opts{'grpquota'} || $opts{'gqnoenforce'} ||
$opts{'gquota'});
return $rv + 4;
}
if ($_[0]->[4]%2 == 1) {
# test user quotas
if (-r "$dir/quota.user" || -r "$dir/aquota.user" ||
$ufile && -r "$dir/$ufile") {
local $stout = &supports_status($dir, "user");
if ($stout =~ /is\s+(on|off|enabled|disabled)/) {
# Can use output from -p mode
if ($stout =~ /is\s+(on|enabled)/) {
$rv += 1;
}
}
else {
# Fall back to testing by running quotaon
&clean_language();
$out = &backquote_command(
"$config{'user_quotaon_command'} $dir 2>&1");
&reset_environment();
if ($out =~ /Device or resource busy/i) {
# already on..
$rv += 1;
}
elsif ($out =~ /Package not installed/i) {
# No quota support!
return 0;
}
else {
# was off.. need to turn on again
&execute_command(
"$config{'user_quotaoff_command'} $dir 2>&1");
}
}
}
}
if ($_[0]->[4] > 1) {
# test group quotas
if (-r "$dir/quota.group" || -r "$dir/aquota.group" ||
$gfile && -r "$dir/$gfile") {
local $stout = &supports_status($dir, "group");
if ($stout =~ /is\s+(on|off|enabled|disabled)/) {
# Can use output from -p mode
if ($stout =~ /is\s+(on|enabled)/) {
$rv += 2;
}
}
else {
# Fall back to testing by running quotaon
&clean_language();
$out = &backquote_command(
"$config{'group_quotaon_command'} $dir 2>&1");
&reset_environment();
if ($out =~ /Device or resource busy/i) {
# already on..
$rv += 2;
}
elsif ($out =~ /Package not installed/i) {
# No quota support!
return 0;
}
else {
# was off.. need to turn on again
&execute_command(
"$config{'group_quotaoff_command'} $dir 2>&1");
}
}
}
}
return $rv;
}
=head2 quota_possible(&fstab)
If quotas cannot be currently enabled, returns 3 if user and group quotas can
be turned on with an /etc/fstab change, 2 for group only, 1 for user only, or
0 if not possible at all.
=cut
sub quota_possible
{
if ($_[0]->[2] =~ /^ext/) {
return 3;
}
return 0;
}
=head2 quota_make_possible(dir, mode)
Edit /etc/fstab to make quotas possible for some dir
=cut
sub quota_make_possible
{
my ($dir, $mode) = @_;
# Update /etc/fstab
my @fstab = &mount::list_mounts();
my ($idx, $f);
for($idx=0; $idx<@fstab; $idx++) {
if ($fstab[$idx]->[0] eq $dir) {
$f = $fstab[$idx];
last;
}
}
return "No /etc/fstab entry found for $dir" if (!$f);
my @opts = grep { $_ ne "defaults" && $_ ne "-" } split(/,/, $f->[3]);
push(@opts, "usrquota", "grpquota");
$f->[3] = join(",", @opts);
&mount::change_mount($idx, @$f);
# Attempt to change live mount options
&mount::os_remount_dir(@$f);
return undef;
}
=head2 supports_status(dir, mode)
Internal function to check if the quotaon -p flag is supported.
=cut
sub supports_status
{
if (!defined($supports_status_cache{$_[0],$_[1]})) {
&clean_language();
local $stout = &backquote_command(
"$config{$_[1].'_quotaon_command'} -p $_[0] 2>&1");
&reset_environment();
$supports_status_cache{$_[0],$_[1]} =
$stout =~ /is\s+(on|off|enabled|disabled)/ ? $stout : 0;
}
return $supports_status_cache{$_[0],$_[1]};
}
=head2 quotaon(filesystem, mode)
Activate quotas and create quota files for some filesystem. The mode can
be one of :
=item 1 - User only.
=item 2 - Group only.
=item 3 - User and group.
=cut
sub quotaon
{
local($out, $qf, @qfile, $flags, $version);
return if (&is_readonly_mode());
# Check which version of quota is being used
$out = &backquote_command("quota -V 2>&1");
if ($out =~ /\s(\d+\.\d+)/) {
$version = $1;
}
# Force load of quota kernel modules
&system_logged("modprobe quota_v2 >/dev/null 2>&1");
local $fmt = $version >= 2 ? "vfsv0" : "vfsold";
if ($_[1]%2 == 1) {
# turn on user quotas
local $qf = $version >= 2 ? "aquota.user" : "quota.user";
if (!-s "$_[0]/$qf") {
# Setting up for the first time
local $ok = 0;
if (&has_command("convertquota") && $version >= 2) {
# Try creating a quota.user file and converting it
&open_tempfile(QUOTAFILE, ">>$_[0]/quota.user", 0, 1);
&close_tempfile(QUOTAFILE);
&set_ownership_permissions(undef, undef, 0600,
"$_[0]/quota.user");
&system_logged("convertquota -u $_[0] 2>&1");
$ok = 1 if (!$?);
&unlink_file("$_[0]/quota.user");
}
if (!$ok) {
# Try to create an [a]quota.user file
if ($version < 4) {
&open_tempfile(QUOTAFILE, ">>$_[0]/$qf", 0, 1);
&close_tempfile(QUOTAFILE);
&set_ownership_permissions(undef, undef, 0600,
"$_[0]/$qf");
}
&run_quotacheck($_[0]) ||
&run_quotacheck($_[0], "-u -f") ||
&run_quotacheck($_[0], "-u -f -m") ||
&run_quotacheck($_[0], "-u -f -m -c");
&run_quotacheck($_[0], "-u -f -m -c -F $fmt");
}
}
$out = &backquote_logged("$config{'user_quotaon_command'} $_[0] 2>&1");
if ($?) { return $out; }
}
if ($_[1] > 1) {
# turn on group quotas
local $qf = $version >= 2 ? "aquota.group" : "quota.group";
if (!-s "$_[0]/$qf") {
# Setting up for the first time
local $ok = 0;
if (!$ok && &has_command("convertquota") && $version >= 2) {
# Try creating a quota.group file and converting it
&open_tempfile(QUOTAFILE, ">>$_[0]/quota.group", 0, 1);
&close_tempfile(QUOTAFILE);
&set_ownership_permissions(undef, undef, 0600,
"$_[0]/quota.group");
&system_logged("convertquota -g $_[0] 2>&1");
$ok = 1 if (!$?);
&unlink_file("$_[0]/quota.group");
}
if (!$ok) {
# Try to create an [a]quota.group file
if ($version < 4) {
&open_tempfile(QUOTAFILE, ">>$_[0]/$qf", 0, 1);
&close_tempfile(QUOTAFILE);
&set_ownership_permissions(undef, undef, 0600,
"$_[0]/$qf");
}
&run_quotacheck($_[0]) ||
&run_quotacheck($_[0], "-g -f") ||
&run_quotacheck($_[0], "-g -f -m") ||
&run_quotacheck($_[0], "-g -f -m -c") ||
&run_quotacheck($_[0], "-g -f -m -c -F $fmt");
}
}
$out = &backquote_logged("$config{'group_quotaon_command'} $_[0] 2>&1");
if ($?) { return $out; }
}
return undef;
}
=head2 run_quotacheck(filesys, args)
Runs the quotacheck command on some filesystem, and returns 1 on success or
0 on failure. Mainly for internal use when enabling quotas.
=cut
sub run_quotacheck
{
&clean_language();
local $out =&backquote_logged(
"$config{'quotacheck_command'} $_[1] $_[0] 2>&1");
&reset_environment();
return $? || $out =~ /cannot guess|cannot remount|cannot find|please stop/i ? 0 : 1;
}
=head2 quotaoff(filesystem, mode)
Turn off quotas for some filesystem. Mode must be 0 for users only, 1 for
groups only, or 2 for both.
=cut
sub quotaoff
{
return if (&is_readonly_mode());
local($out);
if ($_[1]%2 == 1) {
$out = &backquote_logged("$config{'user_quotaoff_command'} $_[0] 2>&1");
if ($?) { return $out; }
}
if ($_[1] > 1) {
$out = &backquote_logged("$config{'group_quotaoff_command'} $_[0] 2>&1");
if ($?) { return $out; }
}
return undef;
}
=head2 user_filesystems(user)
Fills the global hash %filesys with details of all filesystem some user has
quotas on, and returns a count of the number of filesystems. Some example code
best demonstrates how this function should be used:
foreign_require('quota', 'quota-lib.pl');
$n = quota::user_filesystems('joe');
for($i=0; $i<$n; $i++) {
print "filesystem=",$filesys{$i,'filesys'}," ",
"block quota=",$filesys{$i,'hblocks'}," ",
"blocks used=",$filesys{$i,'ublocks'},"\n";
}
=cut
sub user_filesystems
{
my ($user) = @_;
my $n = 0;
if (&has_command("xfs_quota")) {
$n = &parse_xfs_quota_output("xfs_quota -xc 'quota -b -i -u $user'");
}
return &parse_quota_output($config{'user_quota_command'}." ".
quotemeta($user), $n);
}
=head2 group_filesystems(user)
Fills the array %filesys with details of all filesystem some group has
quotas on, and returns the filesystem count. The format of %filesys is the same
as documented in the user_filesystems function.
=cut
sub group_filesystems
{
my ($group) = @_;
my $n = 0;
if (&has_command("xfs_quota")) {
$n = &parse_xfs_quota_output("xfs_quota -xc 'quota -b -i -g $group'");
}
return &parse_quota_output($config{'group_quota_command'}." ".
quotemeta($group), $n);
}
=head2 parse_quota_output(command, [start-at])
Internal function to parse the output of the quota command.
=cut
sub parse_quota_output
{
my ($cmd, $n) = @_;
$n ||= 0;
my %mtab = &get_mtab_map();
local $_;
my %done;
for(my $i=0; $i<$n; $i++) {
$done{$filesys{$i,'filesys'}}++;
}
open(QUOTA, "$cmd 2>/dev/null |");
while(<QUOTA>) {
chop;
if (/^(Disk|\s+Filesystem)/) { next; }
if (/^(\S+)$/) {
# Bogus wrapped line
my $dev = $1;
my $mount = $mtab{&resolve_and_simplify($dev)};
my $nl = <QUOTA>;
next if ($done{$mount}++);
$filesys{$n,'filesys'} = $mount;
$nl =~/^\s+(\S+)\s+(\S+)\s+(\S+)(.{8}\s+)(\S+)\s+(\S+)\s+(\S+)(.*)/ ||
$nl =~ /^.{15}.(.{7}).(.{7}).(.{7})(.{8}.)(.{7}).(.{7}).(.{7})(.*)/;
$filesys{$n,'ublocks'} = int($1);
$filesys{$n,'sblocks'} = int($2);
$filesys{$n,'hblocks'} = int($3);
$filesys{$n,'gblocks'} = $4;
$filesys{$n,'ufiles'} = int($5);
$filesys{$n,'sfiles'} = int($6);
$filesys{$n,'hfiles'} = int($7);
$filesys{$n,'gfiles'} = $8;
$filesys{$n,'gblocks'} = &trunc_space($filesys{$n,'gblocks'});
$filesys{$n,'gfiles'} = &trunc_space($filesys{$n,'gfiles'});
$n++;
}
elsif (/^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)(.{8}\s+)(\S+)\s+(\S+)\s+(\S+)(.*)/ ||
/^(.{15}).(.{7}).(.{7}).(.{7})(.{8}.)(.{7}).(.{7}).(.{7})(.*)/) {
# Single quota line
my $dev = $1; $dev =~ s/\s+$//g; $dev =~ s/^\s+//g;
my $mount = $mtab{&resolve_and_simplify($dev)};
next if ($done{$mount}++);
$filesys{$n,'ublocks'} = int($2);
$filesys{$n,'sblocks'} = int($3);
$filesys{$n,'hblocks'} = int($4);
$filesys{$n,'gblocks'} = $5;
$filesys{$n,'ufiles'} = int($6);
$filesys{$n,'sfiles'} = int($7);
$filesys{$n,'hfiles'} = int($8);
$filesys{$n,'gfiles'} = $9;
$filesys{$n,'filesys'} = $mount;
$filesys{$n,'gblocks'} = &trunc_space($filesys{$n,'gblocks'});
$filesys{$n,'gfiles'} = &trunc_space($filesys{$n,'gfiles'});
$n++;
}
}
close(QUOTA);
return $n;
}
=head2 parse_xfs_quota_output(command)
Internal command to parse all quotas for some user
=cut
sub parse_xfs_quota_output
{
my ($cmd) = @_;
my $rep = &backquote_command("$cmd 2>/dev/null");
my @rep = split(/\r?\n/, $rep);
my $n = 0;
foreach my $l (@rep) {
if ($l =~ /^(\/\S+)\s+(\d+)\s+(\d+)\s+(\d+)\s+\d+\s+\[([^\]]+)\]\s+(\d+)\s+(\d+)\s+(\d+)\s+\d+\s+\[([^\]]+)\]\s+(\S+)/) {
$filesys{$n,'ublocks'} = int($2);
$filesys{$n,'sblocks'} = int($3);
$filesys{$n,'hblocks'} = int($4);
$filesys{$n,'gblocks'} = $5;
$filesys{$n,'ufiles'} = int($6);
$filesys{$n,'sfiles'} = int($7);
$filesys{$n,'hfiles'} = int($8);
$filesys{$n,'gfiles'} = $9;
$filesys{$n,'filesys'} = $10;
$filesys{$n,'gblocks'} = undef
if ($filesys{$n,'gblocks'} =~ /^\-+$/);
$filesys{$n,'gfiles'} = undef
if ($filesys{$n,'gfiles'} =~ /^\-+$/);
$n++;
}
}
return $n;
}
=head2 filesystem_users(filesystem)
Fills the array %user with information about all users with quotas
on this filesystem, and returns the number of users. Some example code shows
how this can be used :
foreign_require('quota', 'quota-lib.pl');
$n = quota::filesystem_users('/home');
for($i=0; $i<$n; $i++) {
print "user=",$user{$i,'user'}," ",
"block quota=",$user{$i,'hblocks'}," ",
"blocks used=",$user{$i,'ublocks'},"\n";
}
=cut
sub filesystem_users
{
my ($fs) = @_;
if (&is_xfs_fs($fs)) {
return &parse_xfs_report_output(
"xfs_quota -xc 'report -u -b -i -n'", \%user, 'user', $fs);
}
else {
return &parse_repquota_output(
$config{'user_repquota_command'}, \%user, "user", $fs);
}
}
=head2 filesystem_groups(filesystem)
Fills the array %group with information about all groups with quotas on some
filesystem, and returns the group count. The format of %group is the same as
documented in the filesystem_users function.
=cut
sub filesystem_groups
{
my ($fs) = @_;
if (&is_xfs_fs($fs)) {
return &parse_xfs_report_output(
"xfs_quota -xc 'report -g -b -i -n'", \%group, 'group', $fs);
}
else {
return &parse_repquota_output(
$config{'group_repquota_command'}, \%group, "group", $fs);
}
}
=head2 parse_repquota_output(command, hashname, dir)
Internal function to parse the output of the repquota command.
=cut
sub parse_repquota_output
{
local ($cmd, $what, $mode, $dir) = @_;
local($rep, @rep, $n, $u, @uinfo);
%$what = ( );
$rep = &backquote_command("$cmd $dir 2>&1");
if ($?) { return -1; }
local $st = &supports_status($dir, $mode);
if (!$st) {
# Older system, need to build username map to identify truncation
if ($mode eq 'user') {
setpwent();
while(@uinfo = getpwent()) {
$hasu{$uinfo[0]}++;
}
endpwent();
}
else {
setgrent();
while(@uinfo = getgrent()) {
$hasu{$uinfo[0]}++;
}
endgrent();
}
}
@rep = split(/\n/, $rep); @rep = @rep[3..$#rep];
local $nn = 0;
local %already;
for($n=0; $n<@rep; $n++) {
if ($rep[$n] =~ /^\s*(\S.*\S|\S)\s+[\-\+]{2}\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)(.*)/ ||
$rep[$n] =~ /^\s*(\S.*\S|\S)\s+[\-\+]{2}\s+(\S+)\s+(\S+)\s+(\S+)(.{7})\s+(\S+)\s+(\S+)\s+(\S+)(.*)/ ||
$rep[$n] =~ /([^\-\s]\S*)\s*[\-\+]{2}(.{8})(.{8})(.{8})(.{7})(.{8})(.{6})(.{6})(.*)/) {
$what->{$nn,$mode} = $1;
$what->{$nn,'ublocks'} = int($2);
$what->{$nn,'sblocks'} = int($3);
$what->{$nn,'hblocks'} = int($4);
$what->{$nn,'gblocks'} = $5;
$what->{$nn,'ufiles'} = int($6);
$what->{$nn,'sfiles'} = int($7);
$what->{$nn,'hfiles'} = int($8);
$what->{$nn,'gfiles'} = $9;
if (!$st && $what->{$nn,$mode} !~ /^\d+$/ &&
!$hasu{$what->{$nn,$mode}}) {
# User/group name was truncated! Try to find him..
local $has = $mode eq "user" ? getpwnam($nn)
: getgrnam($nn);
$hasu{$what->{$nn,$mode}} = $has ? 1 : 0;
foreach $u (keys %hasu) {
if (substr($u, 0, length($what->{$nn,$mode})) eq
$what->{$nn,$what}) {
# found him..
$what->{$nn,$mode} = $u;
last;
}
}
}
next if ($already{$what->{$nn,$mode}}++); # skip dupe users
$what->{$nn,'gblocks'} = &trunc_space($what->{$nn,'gblocks'});
$what->{$nn,'gfiles'} = &trunc_space($what->{$nn,'gfiles'});
$nn++;
}
}
return $nn;
}
=head2 parse_xfs_report_output(command, &hash, key, fs)
Internal function to parse the output of an xfs_quota report command
=cut
sub parse_xfs_report_output
{
my ($cmd, $what, $mode, $fs) = @_;
%$what = ( );
my $rep = &backquote_command("$cmd $fs 2>&1");
if ($?) { return -1; }
my @rep = split(/\r?\n/, $rep);
my $nn = 0;
foreach my $l (@rep) {
if ($l =~ /^(\S+)\s+(\d+)\s+(\d+)\s+(\d+)\s+\d+\s+\[([^\]]+)\]\s+(\d+)\s+(\d+)\s+(\d+)\s+\d+\s+\[([^\]]+)\]/) {
$what->{$nn,$mode} = $1;
$what->{$nn,'ublocks'} = int($2);
$what->{$nn,'sblocks'} = int($3);
$what->{$nn,'hblocks'} = int($4);
$what->{$nn,'gblocks'} = $5;
$what->{$nn,'ufiles'} = int($6);
$what->{$nn,'sfiles'} = int($7);
$what->{$nn,'hfiles'} = int($8);
$what->{$nn,'gfiles'} = $9;
$what->{$nn,'gblocks'} = undef
if ($what->{$nn,'gblocks'} =~ /^\-+$/);
$what->{$nn,'gfiles'} = undef
if ($what->{$nn,'gfiles'} =~ /^\-+$/);
if ($what->{$nn,$mode} =~ /^#(\d+)$/) {
my $u = $mode eq "user" ? getpwuid("$1")
: getgrgid("$1");
if ($u) {
$what->{$nn,$mode} = $u;
}
}
$nn++;
}
}
return $nn;
}
=head2 edit_quota_file(data, filesys, sblocks, hblocks, sfiles, hfiles)
Internal function that is called indirectly by the 'edquota' command to
modify a user's quotas on one filesystem, by editing a file.
=cut
sub edit_quota_file
{
local($rv, $line, %mtab, @m, @line);
%mtab = &get_mtab_map();
@line = split(/\n/, $_[0]);
for(my $i=0; $i<@line; $i++) {
if ($line[$i] =~ /^(\S+): blocks in use: (\d+), limits \(soft = (\d+), hard = (\d+)\)$/ && $mtab{&resolve_and_simplify("$1")} eq $_[1]) {
# Found old-style lines to change
$rv .= "$1: blocks in use: $2, limits (soft = $_[2], hard = $_[3])\n";
$line[++$i] =~ /^\s*inodes in use: (\d+), limits \(soft = (\d+), hard = (\d+)\)$/;
$rv .= "\tinodes in use: $1, limits (soft = $_[4], hard = $_[5])\n";
}
elsif ($line[$i] =~ /^device\s+(\S+)\s+\((\S+)\):/i && $2 eq $_[1]) {
# Even newer-style line to change
$rv .= "$line[$i]\n";
$line[++$i] =~ /^used\s+(\S+),\s+limits:\s+soft=(\d+)\s+hard=(\d+)/i;
$rv .= "Used $1, limits: soft=$_[2] hard=$_[3]\n";
$line[++$i] =~ /^used\s+(\S+) inodes,\s+limits:\s+soft=(\d+)\s+hard=(\d+)/i;
$rv .= "Used $1 inodes, limits: soft=$_[4] hard=$_[5]\n";
}
elsif ($line[$i] =~ /^\s+(\S+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)$/ && $mtab{&resolve_and_simplify("$1")} eq $_[1]) {
# New-style line to change
$rv .= " $1 $2 $_[2] $_[3] $5 $_[4] $_[5]\n";
}
else {
# Leave this line alone
$rv .= "$line[$i]\n";
}
}
return $rv;
}
=head2 quotacheck(filesystem, mode)
Runs quotacheck on some filesystem, and returns the output in case of error,
or undef on failure. The mode must be one of :
=item 0 - Users and groups.
=item 1 - Users only.
=item 2 - Groups only.
=cut
sub quotacheck
{
local $out;
if ($_[1] == 0 || $_[1] == 1) {
&unlink_file("$_[0]/aquota.user.new");
}
if ($_[1] == 0 || $_[1] == 2) {
&unlink_file("$_[0]/aquota.group.new");
}
local $cmd = $config{'quotacheck_command'};
$cmd =~ s/\s+-[ug]//g;
local $flag = $_[1] == 1 ? "-u" : $_[1] == 2 ? "-g" : "-u -g";
$out = &backquote_logged("$cmd $flag $_[0] 2>&1");
if ($?) {
# Try with the -f and -m options
$out = &backquote_logged("$cmd $flag -f -m $_[0] 2>&1");
if ($?) {
# Try with the -F option
$out = &backquote_logged("$config{'quotacheck_command'} $flag -F $_[0] 2>&1");
}
return $out if ($?);
}
return undef;
}
=head2 copy_user_quota(user, [user]+)
Copy the quotas for some user (the first parameter) to many others (named by
the remaining parameters). Returns undef on success, or an error message on
failure.
=cut
sub copy_user_quota
{
for(my $i=1; $i<@_; $i++) {
$out = &backquote_logged("$config{'user_copy_command'} ".
quotemeta($_[0])." ".quotemeta($_[$i])." 2>&1");
if ($?) { return $out; }
}
return undef;
}
=head2 copy_group_quota(group, [group]+)
Copy the quotas for some group (the first parameter) to many others (named by
the remaining parameters). Returns undef on success, or an error message on
failure.
=cut
sub copy_group_quota
{
for(my $i=1; $i<@_; $i++) {
$out = &backquote_logged("$config{'group_copy_command'} ".
quotemeta($_[0])." ".quotemeta($_[$i])." 2>&1");
if ($?) { return $out; }
}
return undef;
}
=head2 get_user_grace(filesystem)
Returns an array containing information about grace times on some filesystem,
which is the amount of time a user can exceed his soft quota before it becomes
hard. The elements of the array are :
=item Grace time for block quota, in units below.
=item Units for block quota grace time, where 0=sec, 1=min, 2=hour, 3=day.
=item Grace time for files quota, in units below.
=item Units for files quota grace time, where 0=sec, 1=min, 2=hour, 3=day.
=cut
sub get_user_grace
{
return &parse_grace_output($config{'user_grace_command'}, $_[0]);
}
=head2 get_group_grace(filesystem)
Returns an array containing information about grace times on some filesystem,
which is the amount of time a group can exceed its soft quota before it becomes
hard. The elements of the array are :
=item Grace time for block quota, in units below.
=item Units for block quota grace time, where 0=sec, 1=min, 2=hour, 3=day.
=item Grace time for files quota, in units below.
=item Units for files quota grace time, where 0=sec, 1=min, 2=hour, 3=day.
=cut
sub get_group_grace
{
return &parse_grace_output($config{'group_grace_command'}, $_[0]);
}
=head2 default_grace
Returns 0 if grace time can be 0, 1 if zero grace means default.
=cut
sub default_grace
{
return 0;
}
=head2 parse_grace_output(command)
Internal function to parse output from the quota -t command.
=cut
sub parse_grace_output
{
local(@rv, %mtab, @m);
%mtab = &get_mtab_map();
$ENV{'EDITOR'} = $ENV{'VISUAL'} = "cat";
open(GRACE, "$_[0] 2>&1 |");
while(<GRACE>) {
if (/^(\S+): block grace period: (\d+) (\S+), file grace period: (\d+) (\S+)/ && $mtab{&resolve_and_simplify("$1")} eq $_[1]) {
@rv = ($2, $name_to_unit{$3}, $4, $name_to_unit{$5});
}
elsif (/^\s+(\S+)\s+(\d+)(\S+)\s+(\d+)(\S+)/ && $mtab{&resolve_and_simplify("$1")} eq $_[1]) {
@rv = ($2, $name_to_unit{$3}, $4, $name_to_unit{$5});
}
elsif (/^device\s+(\S+)\s+\((\S+)\):/i && $2 eq $_[1]) {
if (<GRACE> =~ /^block\s+grace:\s+(\S+)\s+(\S+)\s+inode\s+grace:\s+(\S+)\s+(\S+)/i) {
@rv = ($1, $name_to_unit{$2}, $3, $name_to_unit{$4});
last;
}
}
}
close(GRACE);
return @rv;
}
=head2 edit_grace_file(data, filesystem, btime, bunits, ftime, funits)
Internal function called by edquota -t to set grace times on some filesystem,
by editing a file.
=cut
sub edit_grace_file
{
local($rv, $line, @m, %mtab, @line);
%mtab = &get_mtab_map();
@line = split(/\n/, $_[0]);
for(my $i=0; $i<@line; $i++) {
$line = $line[$i];
if ($line =~ /^(\S+): block grace period: (\d+) (\S+), file grace period: (\d+) (\S+)/ && $mtab{&resolve_and_simplify("$1")} eq $_[1]) {
# replace this line
$line = "$1: block grace period: $_[2] $unit_to_name{$_[3]}, file grace period: $_[4] $unit_to_name{$_[5]}";
}
elsif ($line =~ /^\s+(\S+)\s+(\d+)(\S+)\s+(\d+)(\S+)/ && $mtab{&resolve_and_simplify("$1")} eq $_[1]) {
# replace new-style line
$line = " $1 $_[2]$unit_to_name{$_[3]} $_[4]$unit_to_name{$_[5]}";
}
elsif ($line =~ /^device\s+(\S+)\s+\((\S+)\):/i && $2 eq $_[1]) {
# replace even newer-style line
$rv .= "$line\n";
$line = "Block grace: $_[2] $unit_to_name{$_[3]} Inode grace: $_[4] $unit_to_name{$_[5]}";
$i++;
}
$rv .= "$line\n";
}
return $rv;
}
=head2 grace_units
Returns an array of possible units for grace periods, in human-readable format.
=cut
sub grace_units
{
return ($text{'grace_seconds'}, $text{'grace_minutes'}, $text{'grace_hours'},
$text{'grace_days'});
}
=head2 fs_block_size(dir, device, filesystem)
Returns the size of quota blocks on some filesystem, or undef if unknown.
Consult the dumpe2fs command where possible.
=cut
sub fs_block_size
{
if ($_[2] =~ /^ext\d+$/) {
# Quota block size on ext filesystems is always 1k
return 1024;
}
elsif ($_[2] eq "xfs") {
# Quota block size on XFS filesystems is always 1k
return 1024;
}
elsif ($_[1] eq "/dev/simfs") {
# Size is also 1k on OpenVZ
return 1024;
}
return undef;
}
%name_to_unit = ( "second", 0, "seconds", 0,
"minute", 1, "minutes", 1,
"hour", 2, "hours", 2,
"day", 3, "days", 3,
);
foreach $k (keys %name_to_unit) {
$unit_to_name{$name_to_unit{$k}} = $k;
}
=head2 get_mtab_map
Returns a hash mapping devices to mount points. For internal use.
=cut
sub get_mtab_map
{
local $mm = $module_info{'usermin'} ? "usermount" : "mount";
&foreign_require($mm, "$mm-lib.pl");
local ($m, %mtab);
foreach $m (&foreign_call($mm, "list_mounted", 1)) {
if ($m->[3] =~ /loop=([^,]+)/) {
$mtab{&resolve_and_simplify("$1")} ||= $m->[0];
}
else {
$mtab{&resolve_and_simplify($m->[1])} ||= $m->[0];
}
}
$mtab{"/dev/root"} = "/";
return %mtab;
}
=head2 is_xfs_fs
Internal function to check if XFS tools should be used on some FS
=cut
sub is_xfs_fs
{
my ($fs) = @_;
if (!$get_fs_cache{$fs}) {
foreach my $m (&mount::list_mounted()) {
$get_fs_cache{$m->[0]} = $m->[2];
}
}
return $get_fs_cache{$fs} eq "xfs";
}
=head2 can_set_user_quota(fs)
Returns 1 for XFS, because different quota setting commands are needed
=cut
sub can_set_user_quota
{
my ($fs) = @_;
return &is_xfs_fs($fs);
}
=head2 set_user_quota(user, fs, sblocks, hblocks, sfiles, hfiles)
Set XFS quotas for some user and FS
=cut
sub set_user_quota
{
my ($user, $fs, $sblocks, $hblocks, $sfiles, $hfiles) = @_;
my $out = &backquote_logged("xfs_quota -x -c 'limit -u bsoft=${sblocks}k bhard=${hblocks}k isoft=$sfiles ihard=$hfiles $user' $fs 2>&1");
&error($out) if ($?);
}
sub can_set_group_quota
{
return &can_set_user_quota($fs);
}
=head2 set_group_quota(group, fs, sblocks, hblocks, sfiles, hfiles)
Set XFS quotas for some group and FS
=cut
sub set_group_quota
{
my ($group, $fs, $sblocks, $hblocks, $sfiles, $hfiles) = @_;
my $out = &backquote_logged("xfs_quota -x -c 'limit -g bsoft=${sblocks}k bhard=${hblocks}k isoft=$sfiles ihard=$hfiles $group' $fs 2>&1");
&error($out) if ($?);
}
=head2 can_quotacheck(fs)
Returns 1 if some FS supports quota checking
=cut
sub can_quotacheck
{
my ($fs) = @_;
return !&is_xfs_fs($fs);
}
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