a1d312de77
Based on 1 normalized pattern(s): this program include file is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program include file is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program in the main directory of the linux [ntfs] distribution in the file copying if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 43 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520075212.517001706@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* quota.c - NTFS kernel quota ($Quota) handling. Part of the Linux-NTFS
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* project.
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*
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* Copyright (c) 2004 Anton Altaparmakov
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*/
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#ifdef NTFS_RW
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#include "index.h"
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#include "quota.h"
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#include "debug.h"
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#include "ntfs.h"
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/**
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* ntfs_mark_quotas_out_of_date - mark the quotas out of date on an ntfs volume
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* @vol: ntfs volume on which to mark the quotas out of date
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*
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* Mark the quotas out of date on the ntfs volume @vol and return 'true' on
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* success and 'false' on error.
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*/
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bool ntfs_mark_quotas_out_of_date(ntfs_volume *vol)
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{
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ntfs_index_context *ictx;
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QUOTA_CONTROL_ENTRY *qce;
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const le32 qid = QUOTA_DEFAULTS_ID;
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int err;
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ntfs_debug("Entering.");
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if (NVolQuotaOutOfDate(vol))
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goto done;
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if (!vol->quota_ino || !vol->quota_q_ino) {
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ntfs_error(vol->sb, "Quota inodes are not open.");
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return false;
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}
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inode_lock(vol->quota_q_ino);
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ictx = ntfs_index_ctx_get(NTFS_I(vol->quota_q_ino));
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if (!ictx) {
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ntfs_error(vol->sb, "Failed to get index context.");
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goto err_out;
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}
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err = ntfs_index_lookup(&qid, sizeof(qid), ictx);
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if (err) {
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if (err == -ENOENT)
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ntfs_error(vol->sb, "Quota defaults entry is not "
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"present.");
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else
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ntfs_error(vol->sb, "Lookup of quota defaults entry "
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"failed.");
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goto err_out;
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}
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if (ictx->data_len < offsetof(QUOTA_CONTROL_ENTRY, sid)) {
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ntfs_error(vol->sb, "Quota defaults entry size is invalid. "
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"Run chkdsk.");
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goto err_out;
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}
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qce = (QUOTA_CONTROL_ENTRY*)ictx->data;
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if (le32_to_cpu(qce->version) != QUOTA_VERSION) {
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ntfs_error(vol->sb, "Quota defaults entry version 0x%x is not "
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"supported.", le32_to_cpu(qce->version));
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goto err_out;
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}
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ntfs_debug("Quota defaults flags = 0x%x.", le32_to_cpu(qce->flags));
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/* If quotas are already marked out of date, no need to do anything. */
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if (qce->flags & QUOTA_FLAG_OUT_OF_DATE)
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goto set_done;
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/*
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* If quota tracking is neither requested, nor enabled and there are no
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* pending deletes, no need to mark the quotas out of date.
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*/
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if (!(qce->flags & (QUOTA_FLAG_TRACKING_ENABLED |
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QUOTA_FLAG_TRACKING_REQUESTED |
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QUOTA_FLAG_PENDING_DELETES)))
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goto set_done;
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/*
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* Set the QUOTA_FLAG_OUT_OF_DATE bit thus marking quotas out of date.
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* This is verified on WinXP to be sufficient to cause windows to
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* rescan the volume on boot and update all quota entries.
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*/
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qce->flags |= QUOTA_FLAG_OUT_OF_DATE;
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/* Ensure the modified flags are written to disk. */
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ntfs_index_entry_flush_dcache_page(ictx);
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ntfs_index_entry_mark_dirty(ictx);
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set_done:
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ntfs_index_ctx_put(ictx);
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inode_unlock(vol->quota_q_ino);
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/*
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* We set the flag so we do not try to mark the quotas out of date
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* again on remount.
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*/
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NVolSetQuotaOutOfDate(vol);
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done:
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ntfs_debug("Done.");
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return true;
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err_out:
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if (ictx)
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ntfs_index_ctx_put(ictx);
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inode_unlock(vol->quota_q_ino);
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return false;
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}
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#endif /* NTFS_RW */
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