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fs/ntfs/quota.c
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// SPDX-License-Identifier: GPL-2.0-or-later |
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/* * quota.c - NTFS kernel quota ($Quota) handling. Part of the Linux-NTFS * project. * * Copyright (c) 2004 Anton Altaparmakov |
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*/ #ifdef NTFS_RW #include "index.h" #include "quota.h" #include "debug.h" #include "ntfs.h" /** * ntfs_mark_quotas_out_of_date - mark the quotas out of date on an ntfs volume * @vol: ntfs volume on which to mark the quotas out of date * |
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* Mark the quotas out of date on the ntfs volume @vol and return 'true' on * success and 'false' on error.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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{ ntfs_index_context *ictx; QUOTA_CONTROL_ENTRY *qce; const le32 qid = QUOTA_DEFAULTS_ID; int err; ntfs_debug("Entering."); if (NVolQuotaOutOfDate(vol)) goto done; if (!vol->quota_ino || !vol->quota_q_ino) { 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)); if (!ictx) { ntfs_error(vol->sb, "Failed to get index context."); goto err_out; } err = ntfs_index_lookup(&qid, sizeof(qid), ictx); if (err) { if (err == -ENOENT) ntfs_error(vol->sb, "Quota defaults entry is not " "present."); else ntfs_error(vol->sb, "Lookup of quota defaults entry " "failed."); goto err_out; } if (ictx->data_len < offsetof(QUOTA_CONTROL_ENTRY, sid)) { ntfs_error(vol->sb, "Quota defaults entry size is invalid. " "Run chkdsk."); goto err_out; } qce = (QUOTA_CONTROL_ENTRY*)ictx->data; if (le32_to_cpu(qce->version) != QUOTA_VERSION) { ntfs_error(vol->sb, "Quota defaults entry version 0x%x is not " "supported.", le32_to_cpu(qce->version)); goto err_out; } ntfs_debug("Quota defaults flags = 0x%x.", le32_to_cpu(qce->flags)); /* If quotas are already marked out of date, no need to do anything. */ if (qce->flags & QUOTA_FLAG_OUT_OF_DATE) goto set_done; /* * If quota tracking is neither requested, nor enabled and there are no * pending deletes, no need to mark the quotas out of date. */ if (!(qce->flags & (QUOTA_FLAG_TRACKING_ENABLED | QUOTA_FLAG_TRACKING_REQUESTED | QUOTA_FLAG_PENDING_DELETES))) goto set_done; /* * Set the QUOTA_FLAG_OUT_OF_DATE bit thus marking quotas out of date. * This is verified on WinXP to be sufficient to cause windows to * rescan the volume on boot and update all quota entries. */ qce->flags |= QUOTA_FLAG_OUT_OF_DATE; /* Ensure the modified flags are written to disk. */ ntfs_index_entry_flush_dcache_page(ictx); ntfs_index_entry_mark_dirty(ictx); set_done: ntfs_index_ctx_put(ictx); |
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inode_unlock(vol->quota_q_ino); |
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/* * We set the flag so we do not try to mark the quotas out of date * again on remount. */ NVolSetQuotaOutOfDate(vol); done: ntfs_debug("Done."); |
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return true; |
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err_out: if (ictx) 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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} #endif /* NTFS_RW */ |