Annotation of src/sys/ufs/ufs/quota.h, Revision 1.21.10.1
1.21.10.1! elad 1: /* $NetBSD: quota.h,v 1.21 2005/12/27 04:06:46 chs Exp $ */
1.2 cgd 2:
1.1 mycroft 3: /*
4: * Copyright (c) 1982, 1986, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * This code is derived from software contributed to Berkeley by
8: * Robert Elz at The University of Melbourne.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
1.17 agc 18: * 3. Neither the name of the University nor the names of its contributors
1.1 mycroft 19: * may be used to endorse or promote products derived from this software
20: * without specific prior written permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32: * SUCH DAMAGE.
33: *
1.4 mycroft 34: * @(#)quota.h 8.3 (Berkeley) 8/19/94
1.1 mycroft 35: */
36:
1.11 lukem 37: #ifndef _UFS_UFS_QUOTA_H_
38: #define _UFS_UFS_QUOTA_H_
1.1 mycroft 39:
40: /*
1.4 mycroft 41: * Definitions for disk quotas imposed on the average user
42: * (big brother finally hits UNIX).
1.1 mycroft 43: *
44: * The following constants define the amount of time given a user before the
45: * soft limits are treated as hard limits (usually resulting in an allocation
46: * failure). The timer is started when the user crosses their soft limit, it
47: * is reset when they go below their soft limit.
48: */
1.4 mycroft 49: #define MAX_IQ_TIME (7*24*60*60) /* seconds in 1 week */
50: #define MAX_DQ_TIME (7*24*60*60) /* seconds in 1 week */
1.1 mycroft 51:
52: /*
53: * The following constants define the usage of the quota file array in the
54: * ufsmount structure and dquot array in the inode structure. The semantics
55: * of the elements of these arrays are defined in the routine getinoquota;
56: * the remainder of the quota code treats them generically and need not be
57: * inspected when changing the size of the array.
58: */
59: #define MAXQUOTAS 2
60: #define USRQUOTA 0 /* element used for user quotas */
61: #define GRPQUOTA 1 /* element used for group quotas */
62:
63: /*
64: * Definitions for the default names of the quotas files.
65: */
1.4 mycroft 66: #define INITQFNAMES { \
67: "user", /* USRQUOTA */ \
68: "group", /* GRPQUOTA */ \
69: "undefined", \
1.12 simonb 70: }
1.1 mycroft 71: #define QUOTAFILENAME "quota"
72: #define QUOTAGROUP "operator"
73:
74: /*
75: * Command definitions for the 'quotactl' system call. The commands are
76: * broken into a main command defined below and a subcommand that is used
77: * to convey the type of quota that is being manipulated (see above).
78: */
79: #define SUBCMDMASK 0x00ff
80: #define SUBCMDSHIFT 8
81: #define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK))
82:
83: #define Q_QUOTAON 0x0100 /* enable quotas */
84: #define Q_QUOTAOFF 0x0200 /* disable quotas */
85: #define Q_GETQUOTA 0x0300 /* get limits and usage */
86: #define Q_SETQUOTA 0x0400 /* set limits and usage */
87: #define Q_SETUSE 0x0500 /* set usage */
88: #define Q_SYNC 0x0600 /* sync disk copy of a filesystems quotas */
89:
90: /*
91: * The following structure defines the format of the disk quota file
92: * (as it appears on disk) - the file is an array of these structures
93: * indexed by user or group number. The setquota system call establishes
94: * the vnode for each quota file (a pointer is retained in the ufsmount
95: * structure).
96: */
1.3 cgd 97: struct dqblk {
98: u_int32_t dqb_bhardlimit; /* absolute limit on disk blks alloc */
99: u_int32_t dqb_bsoftlimit; /* preferred limit on disk blks */
100: u_int32_t dqb_curblocks; /* current block count */
101: u_int32_t dqb_ihardlimit; /* maximum # allocated inodes + 1 */
102: u_int32_t dqb_isoftlimit; /* preferred inode limit */
103: u_int32_t dqb_curinodes; /* current # allocated inodes */
1.9 eeh 104: int32_t dqb_btime; /* time limit for excessive disk use */
105: int32_t dqb_itime; /* time limit for excessive files */
1.1 mycroft 106: };
107:
1.6 jtc 108: #ifdef _KERNEL
1.5 mycroft 109: #include <sys/queue.h>
110:
1.1 mycroft 111: /*
112: * The following structure records disk usage for a user or group on a
113: * filesystem. There is one allocated for each quota that exists on any
114: * filesystem for the current user or group. A cache is kept of recently
115: * used entries.
116: */
1.3 cgd 117: struct dquot {
1.4 mycroft 118: LIST_ENTRY(dquot) dq_hash; /* hash list */
119: TAILQ_ENTRY(dquot) dq_freelist; /* free list */
120: u_int16_t dq_flags; /* flags, see below */
121: u_int16_t dq_cnt; /* count of active references */
122: u_int16_t dq_spare; /* unused spare padding */
123: u_int16_t dq_type; /* quota type of this dquot */
124: u_int32_t dq_id; /* identifier this applies to */
125: struct ufsmount *dq_ump; /* filesystem that this is taken from */
126: struct dqblk dq_dqb; /* actual usage & quotas */
127: };
128: /*
129: * Flag values.
130: */
1.1 mycroft 131: #define DQ_LOCK 0x01 /* this quota locked (no MODS) */
132: #define DQ_WANT 0x02 /* wakeup on unlock */
133: #define DQ_MOD 0x04 /* this quota modified since read */
134: #define DQ_FAKE 0x08 /* no limits here, just usage */
135: #define DQ_BLKS 0x10 /* has been warned about blk limit */
136: #define DQ_INODS 0x20 /* has been warned about inode limit */
1.4 mycroft 137: /*
138: * Shorthand notation.
139: */
1.1 mycroft 140: #define dq_bhardlimit dq_dqb.dqb_bhardlimit
141: #define dq_bsoftlimit dq_dqb.dqb_bsoftlimit
142: #define dq_curblocks dq_dqb.dqb_curblocks
143: #define dq_ihardlimit dq_dqb.dqb_ihardlimit
144: #define dq_isoftlimit dq_dqb.dqb_isoftlimit
145: #define dq_curinodes dq_dqb.dqb_curinodes
146: #define dq_btime dq_dqb.dqb_btime
147: #define dq_itime dq_dqb.dqb_itime
148:
149: /*
1.4 mycroft 150: * If the system has never checked for a quota for this file, then it is
151: * set to NODQUOT. Once a write attempt is made the inode pointer is set
152: * to reference a dquot structure.
1.1 mycroft 153: */
1.3 cgd 154: #define NODQUOT NULL
1.1 mycroft 155:
156: /*
157: * Flags to chkdq() and chkiq()
158: */
159: #define FORCE 0x01 /* force usage changes independent of limits */
160: #define CHOWN 0x02 /* (advisory) change initiated by chown */
161:
162: #include <sys/cdefs.h>
163:
164: struct dquot;
165: struct inode;
166: struct mount;
167: struct proc;
168: struct ucred;
169: struct ufsmount;
170: struct vnode;
171: __BEGIN_DECLS
1.21.10.1! elad 172: int chkdq(struct inode *, int64_t, kauth_cred_t, int);
! 173: int chkdqchg(struct inode *, int64_t, kauth_cred_t, int);
! 174: int chkiq(struct inode *, int32_t, kauth_cred_t, int);
! 175: int chkiqchg(struct inode *, int32_t, kauth_cred_t, int);
1.19 thorpej 176: void dqflush(struct vnode *);
177: int dqget(struct vnode *,
178: u_long, struct ufsmount *, int, struct dquot **);
179: void dqinit(void);
180: void dqreinit(void);
181: void dqdone(void);
182: void dqref(struct dquot *);
183: void dqrele(struct vnode *, struct dquot *);
184: int dqsync(struct vnode *, struct dquot *);
185: int getinoquota(struct inode *);
186: int getquota(struct mount *, u_long, int, caddr_t);
187: int qsync(struct mount *mp);
1.20 christos 188: int quotaoff(struct lwp *, struct mount *, int);
189: int quotaon(struct lwp *, struct mount *, int, caddr_t);
1.19 thorpej 190: int setquota(struct mount *, u_long, int, caddr_t);
191: int setuse(struct mount *, u_long, int, caddr_t);
1.20 christos 192: int ufs_quotactl(struct mount *, int, uid_t, void *, struct lwp *);
1.1 mycroft 193: __END_DECLS
194:
195: #ifdef DIAGNOSTIC
196: __BEGIN_DECLS
1.19 thorpej 197: void chkdquot(struct inode *);
1.1 mycroft 198: __END_DECLS
199: #endif
1.7 christos 200: #else
201: __BEGIN_DECLS
1.19 thorpej 202: int quotactl(const char *, int , int, void *);
1.7 christos 203: __END_DECLS
1.6 jtc 204: #endif /* _KERNEL */
1.1 mycroft 205:
1.13 matt 206: #endif /* !_UFS_UFS_QUOTA_H_ */
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