/*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
* 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
+ * 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.
+ *
+ * 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,
* 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
#define _SYS_QUOTA_H
#include <sys/appleapiopts.h>
+#include <sys/cdefs.h>
+#include <sys/types.h> /* u_int32_t */
+#ifdef KERNEL_PRIVATE
+#include <kern/locks.h>
+#endif
+
+#include <mach/boolean.h>
#ifdef __APPLE_API_UNSTABLE
/*
* failure). The timer is started when the user crosses their soft limit, it
* is reset when they go below their soft limit.
*/
-#define MAX_IQ_TIME (7*24*60*60) /* seconds in 1 week */
-#define MAX_DQ_TIME (7*24*60*60) /* seconds in 1 week */
+#define MAX_IQ_TIME (7*24*60*60) /* seconds in 1 week */
+#define MAX_DQ_TIME (7*24*60*60) /* seconds in 1 week */
/*
* The following constants define the usage of the quota file array in the
* the remainder of the quota code treats them generically and need not be
* inspected when changing the size of the array.
*/
-#define MAXQUOTAS 2
-#define USRQUOTA 0 /* element used for user quotas */
-#define GRPQUOTA 1 /* element used for group quotas */
+#define MAXQUOTAS 2
+#define USRQUOTA 0 /* element used for user quotas */
+#define GRPQUOTA 1 /* element used for group quotas */
/*
* Definitions for the default names of the quotas files.
*/
#define INITQFNAMES { \
- "user", /* USRQUOTA */ \
- "group", /* GRPQUOTA */ \
+ "user", /* USRQUOTA */ \
+ "group", /* GRPQUOTA */ \
"undefined", \
};
-#define QUOTAFILENAME ".quota"
+#define QUOTAFILENAME ".quota"
#define QUOTAOPSNAME ".quota.ops"
-#define QUOTAGROUP "operator"
+#define QUOTAGROUP "operator"
/*
* Command definitions for the 'quotactl' system call. The commands are
* broken into a main command defined below and a subcommand that is used
* to convey the type of quota that is being manipulated (see above).
*/
-#define SUBCMDMASK 0x00ff
-#define SUBCMDSHIFT 8
-#define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
-
-#define Q_QUOTAON 0x0100 /* enable quotas */
-#define Q_QUOTAOFF 0x0200 /* disable quotas */
-#define Q_GETQUOTA 0x0300 /* get limits and usage */
-#define Q_SETQUOTA 0x0400 /* set limits and usage */
-#define Q_SETUSE 0x0500 /* set usage */
-#define Q_SYNC 0x0600 /* sync disk copy of a filesystems quotas */
-#define Q_QUOTASTAT 0x0700 /* get quota on/off status */
+#define SUBCMDMASK 0x00ff
+#define SUBCMDSHIFT 8
+#define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
+
+#define Q_QUOTAON 0x0100 /* enable quotas */
+#define Q_QUOTAOFF 0x0200 /* disable quotas */
+#define Q_GETQUOTA 0x0300 /* get limits and usage */
+#define Q_SETQUOTA 0x0400 /* set limits and usage */
+#define Q_SETUSE 0x0500 /* set usage */
+#define Q_SYNC 0x0600 /* sync disk copy of a filesystems quotas */
+#define Q_QUOTASTAT 0x0700 /* get quota on/off status */
/*
* The following two structures define the format of the disk
* file (a pointer is retained in the filesystem mount structure).
*/
struct dqfilehdr {
- u_int32_t dqh_magic;
- u_int32_t dqh_version; /* == QF_VERSION */
- 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 */
- char dqh_string[16]; /* tag string */
- u_int32_t dqh_spare[4]; /* pad struct to power of 2 */
+ u_int32_t dqh_magic;
+ u_int32_t dqh_version; /* == QF_VERSION */
+ 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) */
+ 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 */
};
struct 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 */
- time_t dqb_btime; /* time limit for excessive disk use */
- time_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 */
+ 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 */
};
+#ifdef KERNEL_PRIVATE
+#include <machine/types.h> /* 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
+ */
-#define INITQMAGICS { \
- 0xff31ff35, /* USRQUOTA */ \
- 0xff31ff27, /* GRPQUOTA */ \
+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 */ \
+ 0xff31ff27, /* GRPQUOTA */ \
+}
#define QF_VERSION 1
#define QF_STRING_TAG "QUOTA HASH FILE"
* 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)
* 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;
- for (shift = 32; size > 1; size >>= 1, --shift)
+ for (shift = 32; size > 1; size >>= 1, --shift) {
continue;
- return (shift);
+ }
+ return shift;
}
#ifndef KERNEL
-
-#include <sys/cdefs.h>
-
__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 <sys/queue.h>
-/*
- * 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_CLOSING 0x02 /* Q_QUOTAOFF 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 */
/*
* used entries.
*/
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_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 dqblk dq_dqb; /* actual usage & quotas */
+ 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_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 dqblk dq_dqb; /* actual usage & quotas */
+ uint32_t dq_cnt; /* count of active references */
};
+
+/*
+ * dq_lflags values
+ */
+#define DQ_LLOCK 0x01 /* this quota locked (no MODS) */
+#define DQ_LWANT 0x02 /* wakeup on unlock */
+
/*
- * Flag values.
+ * dq_flags 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_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.
*/
-#define dq_bhardlimit dq_dqb.dqb_bhardlimit
-#define dq_bsoftlimit dq_dqb.dqb_bsoftlimit
-#define dq_curbytes dq_dqb.dqb_curbytes
-#define dq_ihardlimit dq_dqb.dqb_ihardlimit
-#define dq_isoftlimit dq_dqb.dqb_isoftlimit
-#define dq_curinodes dq_dqb.dqb_curinodes
-#define dq_btime dq_dqb.dqb_btime
-#define dq_itime dq_dqb.dqb_itime
+#define dq_bhardlimit dq_dqb.dqb_bhardlimit
+#define dq_bsoftlimit dq_dqb.dqb_bsoftlimit
+#define dq_curbytes dq_dqb.dqb_curbytes
+#define dq_ihardlimit dq_dqb.dqb_ihardlimit
+#define dq_isoftlimit dq_dqb.dqb_isoftlimit
+#define dq_curinodes dq_dqb.dqb_curinodes
+#define dq_btime dq_dqb.dqb_btime
+#define dq_itime dq_dqb.dqb_itime
/*
* If the system has never checked for a quota for this file, then it is
* set to NODQUOT. Once a write attempt is made the inode pointer is set
* to reference a dquot structure.
*/
-#define NODQUOT NULL
+#define NODQUOT NULL
/*
* Flags to chkdq() and chkiq()
*/
-#define FORCE 0x01 /* force usage changes independent of limits */
-#define CHOWN 0x02 /* (advisory) change initiated by chown */
+#define FORCE 0x01 /* force usage changes independent of limits */
+#define CHOWN 0x02 /* (advisory) change initiated by chown */
/*
* on-disk dqblk data structures.
*/
__BEGIN_DECLS
-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 **);
-void dqinit(void);
-void dqref(struct dquot *);
-void dqrele(struct vnode *, struct dquot *);
-void dqreclaim(struct vnode *, struct dquot *);
-int dqsync(struct vnode *, struct dquot *);
-void dqsync_orphans(struct quotafile *);
+void dqfileinit(struct quotafile *);
+int dqfileopen(struct quotafile *, int);
+void dqfileclose(struct quotafile *, int);
+void dqflush(struct vnode *);
+int dqget(u_int32_t, struct quotafile *, int, struct dquot **);
+void dqhashinit(void);
+int dqisinitialized(void);
+void dqref(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 /* KERNEL */
+#endif /* KERNEL_PRIVATE */
#endif /* __APPLE_API_UNSTABLE */
projects / apple / xnu.git / blobdiff