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603 lines
16 KiB
Perl
603 lines
16 KiB
Perl
# linux-lib.pl
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# Quota functions for all linux version
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# Tell the mount module not to check which filesystems are supported,
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# as we don't care for the calls made by this module
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$mount::no_check_support = 1;
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# Pass UIDs and GIDs to edquota instead of names
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$edquota_use_ids = 1;
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# quotas_init()
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sub quotas_init
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{
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if (&has_command("quotaon") && &has_command("quotaoff")) {
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return undef;
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}
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else {
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return "The quotas package does not appear to be installed on ".
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"your system\n";
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}
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}
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# quotas_supported()
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# Returns 1 for user quotas, 2 for group quotas or 3 for both
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sub quotas_supported
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{
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return 3;
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}
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# free_space(filesystem, [blocksize])
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# Returns an array containing btotal, bfree, ftotal, ffree
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sub free_space
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{
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local(@out, @rv);
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$out = `df -k $_[0]`;
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$out =~ /Mounted on\n\S+\s+(\d+)\s+\d+\s+(\d+)/;
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if ($_[1]) {
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push(@rv, int($1*1024/$_[1]), int($2*1024/$_[1]));
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}
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else {
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push(@rv, $1, $2);
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}
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$out = `df -i $_[0]`;
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$out =~ /Mounted on\n\S+\s+(\d+)\s+\d+\s+(\d+)/;
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push(@rv, $1, $2);
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return @rv;
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}
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# quota_can(&mnttab, &fstab)
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# Can this filesystem type support quotas?
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# 0 = No quota support (or not turned on in /etc/fstab)
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# 1 = User quotas only
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# 2 = Group quotas only
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# 3 = User and group quotas
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sub quota_can
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{
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return ($_[1]->[3] =~ /usrquota/ ||
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$_[0]->[3] =~ /usrquota/ ? 1 : 0) +
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($_[1]->[3] =~ /grpquota/ ||
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$_[0]->[3] =~ /grpquota/ ? 2 : 0);
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}
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# quota_now(&mnttab, &fstab)
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# Are quotas currently active?
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# 0 = Not active
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# 1 = User quotas active
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# 2 = Group quotas active
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# 3 = Both active
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# Adding 4 means they cannot be turned off (such as for XFS)
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sub quota_now
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{
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local $rv = 0;
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local $dir = $_[0]->[0];
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local %opts = map { $_, 1 } split(/,/, $_[0]->[3]);
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if ($_[0]->[2] eq "xfs") {
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# For XFS, assume enabled if setup in fstab
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$rv += 1 if ($opts{'quota'} || $opts{'usrquota'} ||
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$opts{'uqnoenforce'});
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$rv += 2 if ($opts{'grpquota'} || $opts{'gqnoenforce'});
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return $rv + 4;
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}
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if ($_[0]->[4]%2 == 1) {
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# test user quotas
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if (-r "$dir/quota.user" || -r "$dir/aquota.user") {
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local $stout = &supports_status($dir, "user");
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if ($stout =~ /is\s+(on|off)/) {
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# Can use output from -p mode
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if ($stout =~ /is\s+on/) {
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$rv += 1;
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}
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}
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else {
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# Fall back to testing by running quotaon
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$out = `$config{'user_quotaon_command'} $dir 2>&1`;
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if ($out =~ /Device or resource busy/i) {
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# already on..
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$rv += 1;
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}
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elsif ($out =~ /Package not installed/i) {
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# No quota support!
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return 0;
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}
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else {
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# was off.. need to turn on again
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`$config{'user_quotaoff_command'} $dir 2>&1`;
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}
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}
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}
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}
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if ($_[0]->[4] > 1) {
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# test group quotas
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if (-r "$dir/quota.group" || -r "$dir/aquota.group") {
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local $stout = &supports_status($dir, "group");
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if ($stout =~ /is\s+(on|off)/) {
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# Can use output from -p mode
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if ($stout =~ /is\s+on/) {
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$rv += 2;
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}
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}
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else {
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# Fall back to testing by running quotaon
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$out = `$config{'group_quotaon_command'} $dir 2>&1`;
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if ($out =~ /Device or resource busy/i) {
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# already on..
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$rv += 2;
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}
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elsif ($out =~ /Package not installed/i) {
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# No quota support!
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return 0;
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}
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else {
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# was off.. need to turn on again
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`$config{'group_quotaoff_command'} $dir 2>&1`;
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}
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}
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}
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}
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return $rv;
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}
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# supports_status(dir, mode)
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sub supports_status
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{
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if (!defined($supports_status_cache{$_[0],$_[1]})) {
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local $stout = `$config{$_[1].'_quotaon_command'} -p $_[0] 2>&1`;
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$supports_status_cache{$_[0],$_[1]} =
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$stout =~ /is\s+(on|off)/ ? $stout : 0;
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}
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return $supports_status_cache{$_[0],$_[1]};
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}
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# quotaon(filesystem, mode)
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# Activate quotas and create quota files for some filesystem. The mode can
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# be 1 for user only, 2 for group only or 3 for user and group
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sub quotaon
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{
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local($out, $qf, @qfile, $flags, $version);
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return if (&is_readonly_mode());
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# Check which version of quota is being used
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$out = `quota -V 2>&1`;
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if ($out =~ /\s(\d+\.\d+)/) {
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$version = $1;
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}
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# Force load of quota kernel modules
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&system_logged("modprobe quota_v2 >/dev/null 2>&1");
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if ($_[1]%2 == 1) {
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# turn on user quotas
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local $qf = $version >= 2 ? "aquota.user" : "quota.user";
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if (!-s "$_[0]/$qf") {
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# Setting up for the first time
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local $ok = 0;
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if (&has_command("convertquota") && $version >= 2) {
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# Try creating a quota.user file and converting it
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&open_tempfile(QUOTAFILE, ">>$_[0]/quota.user", 0, 1);
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&close_tempfile(QUOTAFILE);
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&set_ownership_permissions(undef, undef, 0600,
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"$_[0]/quota.user");
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&system_logged("convertquota -u / 2>&1");
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$ok = 1 if (!$?);
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&unlink_file("$_[0]/quota.user");
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}
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if (!$ok) {
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# Try to create an [a]quota.user file
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&open_tempfile(QUOTAFILE, ">>$_[0]/$qf", 0, 1);
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&close_tempfile(QUOTAFILE);
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&set_ownership_permissions(undef, undef, 0600,
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"$_[0]/$qf");
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&run_quotacheck($_[0]) || &run_quotacheck($_[0], "-u -f") || &run_quotacheck($_[0], "-u -f -m") || &run_quotacheck($_[0], "-u -f -m -c");
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}
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}
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$out = &backquote_logged("$config{'user_quotaon_command'} $_[0] 2>&1");
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if ($?) { return $out; }
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}
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if ($_[1] > 1) {
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# turn on group quotas
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local $qf = $version >= 2 ? "aquota.group" : "quota.group";
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if (!-s "$_[0]/$qf") {
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# Setting up for the first time
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local $ok = 0;
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if (!$ok && &has_command("convertquota") && $version >= 2) {
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# Try creating a quota.group file and converting it
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&open_tempfile(QUOTAFILE, ">>$_[0]/quota.group", 0, 1);
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&close_tempfile(QUOTAFILE);
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&set_ownership_permissions(undef, undef, 0600,
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"$_[0]/quota.group");
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&system_logged("convertquota -g / 2>&1");
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$ok = 1 if (!$?);
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&unlink_file("$_[0]/quota.group");
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}
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if (!$ok) {
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# Try to create an [a]quota.group file
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&open_tempfile(QUOTAFILE, ">>$_[0]/$qf", 0, 1);
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&close_tempfile(QUOTAFILE);
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&set_ownership_permissions(undef, undef, 0600,
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"$_[0]/$qf");
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&run_quotacheck($_[0]) || &run_quotacheck($_[0], "-u -f") || &run_quotacheck($_[0], "-u -f -m") || &run_quotacheck($_[0], "-u -f -m -c");
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}
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}
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$out = &backquote_logged("$config{'group_quotaon_command'} $_[0] 2>&1");
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if ($?) { return $out; }
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}
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return undef;
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}
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# run_quotacheck(filesys, args)
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sub run_quotacheck
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{
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local $out =&backquote_logged("$config{'quotacheck_command'} $_[1] $_[0] 2>&1");
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return $? || $out =~ /cannot remount|please stop/i ? 0 : 1;
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}
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# quotaoff(filesystem, mode)
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# Turn off quotas for some filesystem
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sub quotaoff
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{
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return if (&is_readonly_mode());
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local($out);
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if ($_[1]%2 == 1) {
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$out = &backquote_logged("$config{'user_quotaoff_command'} $_[0] 2>&1");
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if ($?) { return $out; }
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}
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if ($_[1] > 1) {
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$out = &backquote_logged("$config{'group_quotaoff_command'} $_[0] 2>&1");
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if ($?) { return $out; }
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}
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return undef;
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}
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# user_filesystems(user)
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# Fills the array %filesys with details of all filesystem some user has
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# quotas on
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sub user_filesystems
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{
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return &parse_quota_output("$config{'user_quota_command'} ".quotemeta($_[0]));
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}
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# group_filesystems(user)
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# Fills the array %filesys with details of all filesystem some group has
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# quotas on
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sub group_filesystems
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{
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return &parse_quota_output("$config{'group_quota_command'} ".quotemeta($_[0]));
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}
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sub parse_quota_output
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{
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local($n, $_, %mtab);
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%mtab = &get_mtab_map();
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open(QUOTA, "$_[0] |");
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$n=0; while(<QUOTA>) {
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chop;
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if (/^(Disk|\s+Filesystem)/) { next; }
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if (/^(\S+)$/) {
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# Bogus wrapped line
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$filesys{$n,'filesys'} = $mtab{$1};
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local $nl = <QUOTA>;
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$nl =~/^\s+(\S+)\s+(\S+)\s+(\S+)(.{8}\s+)(\S+)\s+(\S+)\s+(\S+)(.*)/ ||
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/^.{15}.(.{7}).(.{7}).(.{7})(.{8}.)(.{7}).(.{7}).(.{7})(.*)/;
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$filesys{$n,'ublocks'} = int($1);
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$filesys{$n,'sblocks'} = int($2);
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$filesys{$n,'hblocks'} = int($3);
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$filesys{$n,'gblocks'} = $4;
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$filesys{$n,'ufiles'} = int($5);
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$filesys{$n,'sfiles'} = int($6);
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$filesys{$n,'hfiles'} = int($7);
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$filesys{$n,'gfiles'} = $8;
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$filesys{$n,'gblocks'} = &trunc_space($filesys{$n,'gblocks'});
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$filesys{$n,'gfiles'} = &trunc_space($filesys{$n,'gfiles'});
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$n++;
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}
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elsif (/^\s*(\S+)\s+(\S+)\s+(\S+)\s+(\S+)(.{8}\s+)(\S+)\s+(\S+)\s+(\S+)(.*)/ ||
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/^(.{15}).(.{7}).(.{7}).(.{7})(.{8}.)(.{7}).(.{7}).(.{7})(.*)/) {
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# Single quota line
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$filesys{$n,'ublocks'} = int($2);
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$filesys{$n,'sblocks'} = int($3);
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$filesys{$n,'hblocks'} = int($4);
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$filesys{$n,'gblocks'} = $5;
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$filesys{$n,'ufiles'} = int($6);
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$filesys{$n,'sfiles'} = int($7);
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$filesys{$n,'hfiles'} = int($8);
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$filesys{$n,'gfiles'} = $9;
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$dev = $1; $dev =~ s/\s+$//g; $dev =~ s/^\s+//g;
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$filesys{$n,'filesys'} = $mtab{$dev};
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$filesys{$n,'gblocks'} = &trunc_space($filesys{$n,'gblocks'});
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$filesys{$n,'gfiles'} = &trunc_space($filesys{$n,'gfiles'});
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$n++;
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}
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}
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close(QUOTA);
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return $n;
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}
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# filesystem_users(filesystem)
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# Fills the array %user with information about all users with quotas
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# on this filesystem. This may not be all users on the system..
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sub filesystem_users
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{
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return &parse_repquota_output(
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"$config{'user_repquota_command'} $_[0]", "user");
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}
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sub filesystem_groups
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{
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return &parse_repquota_output(
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"$config{'group_repquota_command'} $_[0]", "group");
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}
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sub parse_repquota_output
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{
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local($rep, @rep, $n, $what, $u, @uinfo);
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$what = $_[1];
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$$what = ( );
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$rep = `$_[0] 2>&1`;
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if ($?) { return -1; }
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local $st = &supports_status($_[0], $what);
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if (!$st) {
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# Older system, need to build username map to identify truncation
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if ($what eq 'user') {
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setpwent();
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while(@uinfo = getpwent()) {
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$hasu{$uinfo[0]}++;
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}
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endpwent();
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}
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else {
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setgrent();
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while(@uinfo = getgrent()) {
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$hasu{$uinfo[0]}++;
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}
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endgrent();
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}
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}
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@rep = split(/\n/, $rep); @rep = @rep[3..$#rep];
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local $nn = 0;
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local %already;
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for($n=0; $n<@rep; $n++) {
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if ($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})(.*)/) {
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$$what{$nn,$what} = $1;
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$$what{$nn,'ublocks'} = int($2);
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$$what{$nn,'sblocks'} = int($3);
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$$what{$nn,'hblocks'} = int($4);
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$$what{$nn,'gblocks'} = $5;
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$$what{$nn,'ufiles'} = int($6);
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$$what{$nn,'sfiles'} = int($7);
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$$what{$nn,'hfiles'} = int($8);
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$$what{$nn,'gfiles'} = $9;
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if (!$st && $$what{$nn,$what} !~ /^\d+$/ &&
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!$hasu{$$what{$nn,$what}}) {
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# User/group name was truncated! Try to find him..
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foreach $u (keys %hasu) {
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if (substr($u, 0, length($$what{$nn,$what})) eq
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$$what{$nn,$what}) {
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# found him..
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$$what{$nn,$what} = $u;
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last;
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}
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}
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}
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next if ($already{$$what{$nn,$what}}++); # skip dupe users
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$$what{$nn,'gblocks'} = &trunc_space($$what{$nn,'gblocks'});
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$$what{$nn,'gfiles'} = &trunc_space($$what{$nn,'gfiles'});
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$nn++;
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}
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}
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return $nn;
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}
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# edit_quota_file(data, filesys, sblocks, hblocks, sfiles, hfiles)
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sub edit_quota_file
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{
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local($rv, $line, %mtab, @m, @line);
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%mtab = &get_mtab_map();
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@line = split(/\n/, $_[0]);
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for(my $i=0; $i<@line; $i++) {
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if ($line[$i] =~ /^(\S+): blocks in use: (\d+), limits \(soft = (\d+), hard = (\d+)\)$/ && $mtab{&resolve_links("$1")} eq $_[1]) {
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# Found old-style lines to change
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$rv .= "$1: blocks in use: $2, limits (soft = $_[2], hard = $_[3])\n";
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$line[++$i] =~ /^\s*inodes in use: (\d+), limits \(soft = (\d+), hard = (\d+)\)$/;
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$rv .= "\tinodes in use: $1, limits (soft = $_[4], hard = $_[5])\n";
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}
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elsif ($line[$i] =~ /^device\s+(\S+)\s+\((\S+)\):/i && $2 eq $_[1]) {
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# Even newer-style line to change
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$rv .= "$line[$i]\n";
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$line[++$i] =~ /^used\s+(\S+),\s+limits:\s+soft=(\d+)\s+hard=(\d+)/i;
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$rv .= "Used $1, limits: soft=$_[2] hard=$_[3]\n";
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$line[++$i] =~ /^used\s+(\S+) inodes,\s+limits:\s+soft=(\d+)\s+hard=(\d+)/i;
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$rv .= "Used $1 inodes, limits: soft=$_[4] hard=$_[5]\n";
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}
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elsif ($line[$i] =~ /^\s+(\S+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)$/ && $mtab{&resolve_links("$1")} eq $_[1]) {
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# New-style line to change
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$rv .= " $1 $2 $_[2] $_[3] $5 $_[4] $_[5]\n";
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}
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else {
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# Leave this line alone
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$rv .= "$line[$i]\n";
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}
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}
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return $rv;
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}
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# quotacheck(filesystem, mode(1=users, 2=group))
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# Runs quotacheck on some filesystem
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sub quotacheck
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{
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local $out;
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local $cmd = $config{'quotacheck_command'};
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$cmd =~ s/\s+-[ug]//g;
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local $flag = $_[1] == 1 ? "-u" : $_[1] == 2 ? "-g" : "-u -g";
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$out = &backquote_logged("$cmd $flag $_[0] 2>&1");
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if ($?) {
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# Try with the -f and -m options
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$out = &backquote_logged("$cmd $flag -f -m $_[0] 2>&1");
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if ($?) {
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# Try with the -F option
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$out = &backquote_logged("$config{'quotacheck_command'} $flag -F $_[0] 2>&1");
|
|
}
|
|
return $out if ($?);
|
|
}
|
|
return undef;
|
|
}
|
|
|
|
# copy_user_quota(user, [user]+)
|
|
# Copy the quotas for some user to many others
|
|
sub copy_user_quota
|
|
{
|
|
for($i=1; $i<@_; $i++) {
|
|
$out = &backquote_logged("$config{'user_copy_command'} ".
|
|
quotemeta($_[0])." ".quotemeta($_[$i])." 2>&1");
|
|
if ($?) { return $out; }
|
|
}
|
|
return undef;
|
|
}
|
|
|
|
# copy_group_quota(group, [group]+)
|
|
# Copy the quotas for some group to many others
|
|
sub copy_group_quota
|
|
{
|
|
for($i=1; $i<@_; $i++) {
|
|
$out = &backquote_logged("$config{'group_copy_command'} ".
|
|
quotemeta($_[0])." ".quotemeta($_[$i])." 2>&1");
|
|
if ($?) { return $out; }
|
|
}
|
|
return undef;
|
|
}
|
|
|
|
# get_user_grace(filesystem)
|
|
# Returns an array containing btime, bunits, ftime, funits
|
|
# The units can be 0=sec, 1=min, 2=hour, 3=day
|
|
sub get_user_grace
|
|
{
|
|
return &parse_grace_output($config{'user_grace_command'}, $_[0]);
|
|
}
|
|
|
|
# get_group_grace(filesystem)
|
|
# Returns an array containing btime, bunits, ftime, funits
|
|
# The units can be 0=sec, 1=min, 2=hour, 3=day
|
|
sub get_group_grace
|
|
{
|
|
return &parse_grace_output($config{'group_grace_command'}, $_[0]);
|
|
}
|
|
|
|
# default_grace()
|
|
# Returns 0 if grace time can be 0, 1 if zero grace means default
|
|
sub default_grace
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
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_links("$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_links("$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{$4});
|
|
last;
|
|
}
|
|
}
|
|
}
|
|
close(GRACE);
|
|
return @rv;
|
|
}
|
|
|
|
# edit_grace_file(data, filesystem, btime, bunits, ftime, funits)
|
|
sub edit_grace_file
|
|
{
|
|
local($rv, $line, @m, %mtab, @line);
|
|
%mtab = &get_mtab_map();
|
|
@line = split(/\n/, $_[0]);
|
|
for(my $i=0; $i<@line; $i++) {
|
|
$line = $line[$i];
|
|
print STDERR "line = $line\n";
|
|
if ($line =~ /^(\S+): block grace period: (\d+) (\S+), file grace period: (\d+) (\S+)/ && $mtab{&resolve_links("$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_links("$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++;
|
|
}
|
|
print STDERR "new = $line\n";
|
|
$rv .= "$line\n";
|
|
}
|
|
return $rv;
|
|
}
|
|
|
|
# grace_units()
|
|
# Returns an array of possible units for grace periods
|
|
sub grace_units
|
|
{
|
|
return ($text{'grace_seconds'}, $text{'grace_minutes'}, $text{'grace_hours'},
|
|
$text{'grace_days'});
|
|
}
|
|
|
|
# fs_block_size(dir, device, filesystem)
|
|
# Returns the size of blocks on some filesystem, or undef if unknown.
|
|
# Consult the dumpe2fs command where possible.
|
|
sub fs_block_size
|
|
{
|
|
if ($_[2] eq "ext2" || $_[2] eq "ext3") {
|
|
return 1024;
|
|
# This code isn't needed, because the quota block size is
|
|
# not the same as the filesystem block size!!
|
|
#if (&has_command("dumpe2fs")) {
|
|
# local $out = `dumpe2fs -h $_[1] 2>&1`;
|
|
# if (!$? && $out =~ /block size:\s+(\d+)/i) {
|
|
# return $1;
|
|
# }
|
|
# }
|
|
}
|
|
elsif ($_[0] eq "xfs") {
|
|
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;
|
|
}
|
|
|
|
# Returns a hash mapping mount points to devices
|
|
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_links("$1")} = $m->[0];
|
|
}
|
|
else {
|
|
$mtab{&resolve_links($m->[1])} = $m->[0];
|
|
}
|
|
}
|
|
return %mtab;
|
|
}
|
|
|
|
1;
|
|
|