X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/9bccf70c0258c7cac2dcb80011b2a964d884c552..7ddcb079202367355dddccdfa4318e57d50318be:/bsd/sys/quota.h?ds=sidebyside diff --git a/bsd/sys/quota.h b/bsd/sys/quota.h index 470d04dc1..3693ff592 100644 --- a/bsd/sys/quota.h +++ b/bsd/sys/quota.h @@ -1,23 +1,29 @@ /* - * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. + * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * Copyright (c) 1982, 1986, 1993 @@ -62,6 +68,12 @@ #define _SYS_QUOTA_H #include +#include +#ifdef KERNEL_PRIVATE +#include +#endif + +#include #ifdef __APPLE_API_UNSTABLE /* @@ -139,9 +151,9 @@ struct dqfilehdr { u_int32_t dqh_maxentries; /* must be a power of 2 */ u_int32_t dqh_entrycnt; /* count of active entries */ u_int32_t dqh_flags; /* reserved for now (0) */ - time_t dqh_chktime; /* time of last quota check */ - time_t dqh_btime; /* time limit for excessive disk use */ - time_t dqh_itime; /* time limit for excessive files */ + u_int32_t dqh_chktime; /* time of last quota check */ + u_int32_t dqh_btime; /* time limit for excessive disk use */ + u_int32_t dqh_itime; /* time limit for excessive files */ char dqh_string[16]; /* tag string */ u_int32_t dqh_spare[4]; /* pad struct to power of 2 */ }; @@ -153,12 +165,32 @@ struct dqblk { u_int32_t dqb_ihardlimit; /* maximum # allocated inodes + 1 */ u_int32_t dqb_isoftlimit; /* preferred inode limit */ u_int32_t dqb_curinodes; /* current # allocated inodes */ - time_t dqb_btime; /* time limit for excessive disk use */ - time_t dqb_itime; /* time limit for excessive files */ + u_int32_t dqb_btime; /* time limit for excessive disk use */ + u_int32_t dqb_itime; /* time limit for excessive files */ u_int32_t dqb_id; /* identifier (0 for empty entries) */ u_int32_t dqb_spare[4]; /* pad struct to power of 2 */ }; +#ifdef KERNEL_PRIVATE +#include /* user_time_t */ +/* LP64 version of struct dqblk. time_t is a long and must grow when + * we're dealing with a 64-bit process. + * WARNING - keep in sync with struct dqblk + */ + +struct user_dqblk { + u_int64_t dqb_bhardlimit; /* absolute limit on disk bytes alloc */ + u_int64_t dqb_bsoftlimit; /* preferred limit on disk bytes */ + u_int64_t dqb_curbytes; /* current byte count */ + u_int32_t dqb_ihardlimit; /* maximum # allocated inodes + 1 */ + u_int32_t dqb_isoftlimit; /* preferred inode limit */ + u_int32_t dqb_curinodes; /* current # allocated inodes */ + u_int32_t dqb_btime; /* time limit for excessive disk use */ + u_int32_t dqb_itime; /* time limit for excessive files */ + u_int32_t dqb_id; /* identifier (0 for empty entries) */ + u_int32_t dqb_spare[4]; /* pad struct to power of 2 */ +}; +#endif /* KERNEL_PRIVATE */ #define INITQMAGICS { \ 0xff31ff35, /* USRQUOTA */ \ @@ -183,7 +215,7 @@ struct dqblk { * golden ratio to the machine's word size. */ #define dqhash1(id, shift, mask) \ - ((((id) * 2654435761UL) >> (shift)) & (mask)) + ((((id) * 2654435761U) >> (shift)) & (mask)) #define dqhash2(id, mask) \ (dqhash1((id), 11, (mask)>>1) | 1) @@ -197,10 +229,10 @@ struct dqblk { * Compute the hash shift value. * It is the word size, in bits, minus the hash table size, in bits. */ -static __inline int dqhashshift(u_long); +static __inline int dqhashshift(u_int32_t); static __inline int -dqhashshift(u_long size) +dqhashshift(u_int32_t size) { int shift; @@ -211,46 +243,41 @@ dqhashshift(u_long size) #ifndef KERNEL - -#include - __BEGIN_DECLS -int quotactl __P((char *, int, int, caddr_t)); +int quotactl(const char *, int, int, caddr_t); __END_DECLS #endif /* !KERNEL */ -#ifdef KERNEL +#ifdef KERNEL_PRIVATE #include -/* - * Macros to avoid subroutine calls to trivial functions. - */ -#if DIAGNOSTIC -#define DQREF(dq) dqref(dq) -#else -#define DQREF(dq) (dq)->dq_cnt++ -#endif /* Quota file info */ struct quotafile { + lck_mtx_t qf_lock; /* quota file mutex */ struct vnode *qf_vp; /* quota file vnode */ - struct ucred *qf_cred; /* quota file access cred */ + kauth_cred_t qf_cred; /* quota file access cred */ int qf_shift; /* primary hash shift */ int qf_maxentries; /* size of hash table (power of 2) */ - int qf_entrycnt; /* count of active entries */ - time_t qf_btime; /* block quota time limit */ - time_t qf_itime; /* inode quota time limit */ + int qf_entrycnt; /* count of active entries */ + u_int32_t qf_btime; /* block quota time limit */ + u_int32_t qf_itime; /* inode quota time limit */ + + /* the following 2 fields are protected */ + /* by the quota list lock */ char qf_qflags; /* quota specific flags */ + int qf_refcnt; /* count of dquot refs on this file */ }; /* * Flags describing the runtime state of quotas. * (in qf_qflags) */ -#define QTF_OPENING 0x01 /* Q_QUOTAON in progress */ +#define QTF_OPENING 0x01 /* Q_QUOTAON in progress */ #define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */ +#define QTF_WANTED 0x04 /* waiting for change of state */ /* @@ -263,23 +290,30 @@ struct dquot { LIST_ENTRY(dquot) dq_hash; /* hash list */ TAILQ_ENTRY(dquot) dq_freelist; /* free list */ u_int16_t dq_flags; /* flags, see below */ - u_int16_t dq_cnt; /* count of active references */ - u_int16_t dq_spare; /* unused spare padding */ + u_int16_t dq_cnt_unused; /* Replaced by dq_cnt below */ + u_int16_t dq_lflags; /* protected by the quota list lock */ u_int16_t dq_type; /* quota type of this dquot */ u_int32_t dq_id; /* identifier this applies to */ u_int32_t dq_index; /* index into quota file */ - struct quotafile *dq_qfile; /* quota file that this is taken from */ + struct quotafile *dq_qfile; /* quota file that this is taken from */ struct dqblk dq_dqb; /* actual usage & quotas */ + uint32_t dq_cnt; /* count of active references */ }; + /* - * Flag values. + * dq_lflags values */ -#define DQ_LOCK 0x01 /* this quota locked (no MODS) */ -#define DQ_WANT 0x02 /* wakeup on unlock */ -#define DQ_MOD 0x04 /* this quota modified since read */ -#define DQ_FAKE 0x08 /* no limits here, just usage */ -#define DQ_BLKS 0x10 /* has been warned about blk limit */ -#define DQ_INODS 0x20 /* has been warned about inode limit */ +#define DQ_LLOCK 0x01 /* this quota locked (no MODS) */ +#define DQ_LWANT 0x02 /* wakeup on unlock */ + +/* + * dq_flags values + */ +#define DQ_MOD 0x01 /* this quota modified since read */ +#define DQ_FAKE 0x02 /* no limits here, just usage */ +#define DQ_BLKS 0x04 /* has been warned about blk limit */ +#define DQ_INODS 0x08 /* has been warned about inode limit */ + /* * Shorthand notation. */ @@ -306,22 +340,36 @@ struct dquot { #define CHOWN 0x02 /* (advisory) change initiated by chown */ +#ifdef XNU_KERNEL_PRIVATE /* * Functions that manage the in-core dquot and the * on-disk dqblk data structures. */ __BEGIN_DECLS +void dqfileinit(struct quotafile *); int dqfileopen(struct quotafile *, int); void dqfileclose(struct quotafile *, int); void dqflush(struct vnode *); -int dqget(struct vnode *, u_long, struct quotafile *, int, struct dquot **); +int dqget(u_int32_t, struct quotafile *, int, struct dquot **); +void dqhashinit(void); void dqinit(void); +int dqisinitialized(void); void dqref(struct dquot *); -void dqrele(struct vnode *, struct dquot *); -int dqsync(struct vnode *, struct dquot *); +void dqrele(struct dquot *); +void dqreclaim(struct dquot *); +int dqsync(struct dquot *); +void dqsync_orphans(struct quotafile *); +void dqlock(struct dquot *); +void dqunlock(struct dquot *); + +int qf_get(struct quotafile *, int type); +void qf_put(struct quotafile *, int type); + +__private_extern__ void munge_dqblk(struct dqblk *dqblkp, struct user_dqblk *user_dqblkp, boolean_t to64); __END_DECLS +#endif /* XNU_KERNEL_PRIVATE */ -#endif /* KERNEL */ +#endif /* KERNEL_PRIVATE */ #endif /* __APPLE_API_UNSTABLE */