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28 #include <dt_object.h>
29 #include <lustre_fid.h>
30 #include <lustre_dlm.h>
32 #ifndef _LUSTRE_LQUOTA_H
33 #define _LUSTRE_LQUOTA_H
35 /* Gather all quota record type in an union that can be used to read any records
36 * from disk. All fields of these records must be 64-bit aligned, otherwise the
37 * OSD layer may swab them incorrectly. */
39 struct lquota_glb_rec lqr_glb_rec;
40 struct lquota_slv_rec lqr_slv_rec;
41 struct lquota_acct_rec lqr_acct_rec;
44 /* Name used in the configuration logs to identify the default metadata pool
45 * (composed of all the MDTs, with pool ID 0) and the default data pool (all
46 * the OSTs, with pool ID 0 too). */
47 #define QUOTA_METAPOOL_NAME "mdt="
48 #define QUOTA_DATAPOOL_NAME "ost="
51 * Quota enforcement support on slaves
56 /* The quota slave feature is implemented under the form of a library.
57 * The API is the following:
59 * - qsd_init(): the user (mostly the OSD layer) should first allocate a qsd
60 * instance via qsd_init(). This sets up on-disk objects
61 * associated with the quota slave feature and initiates the quota
62 * reintegration procedure if needed. qsd_init() should typically
63 * be called when ->ldo_start is invoked.
65 * - qsd_fini(): is used to release a qsd_instance structure allocated with
66 * qsd_init(). This releases all quota slave objects and frees the
67 * structures associated with the qsd_instance.
69 * Below are the function prototypes to be used by OSD layer to manage quota
70 * enforcement. Arguments are documented where each function is defined. */
72 struct qsd_instance *qsd_init(const struct lu_env *, char *, struct dt_device *,
73 cfs_proc_dir_entry_t *);
75 void qsd_fini(const struct lu_env *, struct qsd_instance *);
77 /* helper function used by MDT & OFD to retrieve quota accounting information
79 int lquotactl_slv(const struct lu_env *, struct dt_device *,
80 struct obd_quotactl *);
83 /* dumb procfs handler which always report success, for backward compatibility
85 int lprocfs_quota_rd_type_dumb(char *, char **, off_t, int, int *, void *);
86 int lprocfs_quota_wr_type_dumb(struct file *, const char *, unsigned long,
89 #endif /* _LUSTRE_LQUOTA_H */