127acac22Smckusick /* 2209d2ae0Smckusick * Copyright (c) 1982, 1986 Regents of the University of California. 38610d286Sbostic * All rights reserved. 427acac22Smckusick * 54d67415cSmckusick * This code is derived from software contributed to Berkeley by 64d67415cSmckusick * Robert Elz at The University of Melbourne. 74d67415cSmckusick * 888f5dc9aSbostic * %sccs.include.redist.c% 98610d286Sbostic * 10*873c056cSdonn * @(#)quota.h 7.9 (Berkeley) 02/22/91 1127acac22Smckusick */ 122debeb82Skre 133c1ddcbeSmckusick #ifndef _QUOTA_ 143c1ddcbeSmckusick #define _QUOTA_ 153c1ddcbeSmckusick 162debeb82Skre /* 174d67415cSmckusick * Definitions for disk quotas imposed on the average user 184d67415cSmckusick * (big brother finally hits UNIX). 192debeb82Skre * 204d67415cSmckusick * The following constants define the amount of time given a user 214d67415cSmckusick * before the soft limits are treated as hard limits (usually resulting 224d67415cSmckusick * in an allocation failure). The timer is started when the user crosses 234d67415cSmckusick * their soft limit, it is reset when they go below their soft limit. 242debeb82Skre */ 254d67415cSmckusick #define MAX_IQ_TIME (7*24*60*60) /* 1 week */ 264d67415cSmckusick #define MAX_DQ_TIME (7*24*60*60) /* 1 week */ 274d67415cSmckusick 284d67415cSmckusick /* 294d67415cSmckusick * The following constants define the usage of the quota file array 304d67415cSmckusick * in the ufsmount structure and dquot array in the inode structure. 314d67415cSmckusick * The semantics of the elements of these arrays are defined in the 324d67415cSmckusick * routine getinoquota; the remainder of the quota code treats them 334d67415cSmckusick * generically and need not be inspected when changing the size of 344d67415cSmckusick * the array. 354d67415cSmckusick */ 364d67415cSmckusick #define MAXQUOTAS 2 374d67415cSmckusick #define USRQUOTA 0 /* element used for user quotas */ 384d67415cSmckusick #define GRPQUOTA 1 /* element used for group quotas */ 394d67415cSmckusick 404d67415cSmckusick /* 414d67415cSmckusick * Definitions for the default names of the quotas files. 424d67415cSmckusick */ 434d67415cSmckusick #define INITQFNAMES { \ 444d67415cSmckusick "user", /* USRQUOTA */ \ 454d67415cSmckusick "group", /* GRPQUOTA */ \ 464d67415cSmckusick "undefined", \ 472debeb82Skre }; 4881159eacSmckusick #define QUOTAFILENAME "quota" 4981159eacSmckusick #define QUOTAGROUP "operator" 502debeb82Skre 512debeb82Skre /* 524d67415cSmckusick * Command definitions for the 'quotactl' system call. 534d67415cSmckusick * The commands are broken into a main command defined below 544d67415cSmckusick * and a subcommand that is used to convey the type of 554d67415cSmckusick * quota that is being manipulated (see above). 562debeb82Skre */ 574d67415cSmckusick #define SUBCMDMASK 0x00ff 584d67415cSmckusick #define SUBCMDSHIFT 8 594d67415cSmckusick #define QCMD(cmd, type) (((cmd) << SUBCMDSHIFT) | ((type) & SUBCMDMASK)) 602debeb82Skre 614d67415cSmckusick #define Q_QUOTAON 0x0100 /* enable quotas */ 624d67415cSmckusick #define Q_QUOTAOFF 0x0200 /* disable quotas */ 634d67415cSmckusick #define Q_GETQUOTA 0x0300 /* get limits and usage */ 644d67415cSmckusick #define Q_SETQUOTA 0x0400 /* set limits and usage */ 654d67415cSmckusick #define Q_SETUSE 0x0500 /* set usage */ 664d67415cSmckusick #define Q_SYNC 0x0600 /* sync disk copy of a filesystems quotas */ 672debeb82Skre 682debeb82Skre /* 694d67415cSmckusick * The following structure defines the format of the disk quota file 704d67415cSmckusick * (as it appears on disk) - the file is an array of these structures 714d67415cSmckusick * indexed by user or group number. The setquota system call establishes 724d67415cSmckusick * the vnode for each quota file (a pointer is retained in the ufsmount 734d67415cSmckusick * structure). 744d67415cSmckusick */ 754d67415cSmckusick struct dqblk { 764d67415cSmckusick u_long dqb_bhardlimit; /* absolute limit on disk blks alloc */ 774d67415cSmckusick u_long dqb_bsoftlimit; /* preferred limit on disk blks */ 784d67415cSmckusick u_long dqb_curblocks; /* current block count */ 794d67415cSmckusick u_long dqb_ihardlimit; /* maximum # allocated inodes + 1 */ 804d67415cSmckusick u_long dqb_isoftlimit; /* preferred inode limit */ 814d67415cSmckusick u_long dqb_curinodes; /* current # allocated inodes */ 824d67415cSmckusick time_t dqb_btime; /* time limit for excessive disk use */ 834d67415cSmckusick time_t dqb_itime; /* time limit for excessive files */ 844d67415cSmckusick }; 854d67415cSmckusick 864d67415cSmckusick #ifdef KERNEL 874d67415cSmckusick /* 884d67415cSmckusick * The following structure records disk usage for a user or group on a 894d67415cSmckusick * filesystem. There is one allocated for each quota that exists on any 904d67415cSmckusick * filesystem for the current user or group. A cache is kept of recently 914d67415cSmckusick * used entries. 922debeb82Skre */ 932debeb82Skre struct dquot { 94a48ca1d2Ssam struct dquot *dq_forw, *dq_back;/* MUST be first entry */ 954d67415cSmckusick struct dquot *dq_freef, **dq_freeb; /* free list */ 964d67415cSmckusick short dq_flags; /* flags, see below */ 974d67415cSmckusick short dq_cnt; /* count of active references */ 984d67415cSmckusick short dq_spare; /* unused spare padding */ 994d67415cSmckusick short dq_type; /* quota type of this dquot */ 1004d67415cSmckusick u_long dq_id; /* identifier this applies to */ 1014d67415cSmckusick struct ufsmount *dq_ump; /* filesystem that this is taken from */ 1024d67415cSmckusick struct dqblk dq_dqb; /* actual usage & quotas */ 1034d67415cSmckusick }; 1044d67415cSmckusick /* 1054d67415cSmckusick * Flag values. 1064d67415cSmckusick */ 107a48ca1d2Ssam #define DQ_LOCK 0x01 /* this quota locked (no MODS) */ 108a48ca1d2Ssam #define DQ_WANT 0x02 /* wakeup on unlock */ 109a48ca1d2Ssam #define DQ_MOD 0x04 /* this quota modified since read */ 110a48ca1d2Ssam #define DQ_FAKE 0x08 /* no limits here, just usage */ 111a48ca1d2Ssam #define DQ_BLKS 0x10 /* has been warned about blk limit */ 112a48ca1d2Ssam #define DQ_INODS 0x20 /* has been warned about inode limit */ 1134d67415cSmckusick /* 1144d67415cSmckusick * Shorthand notation. 1154d67415cSmckusick */ 116ffdbd733Ssam #define dq_bhardlimit dq_dqb.dqb_bhardlimit 117ffdbd733Ssam #define dq_bsoftlimit dq_dqb.dqb_bsoftlimit 118ffdbd733Ssam #define dq_curblocks dq_dqb.dqb_curblocks 119ffdbd733Ssam #define dq_ihardlimit dq_dqb.dqb_ihardlimit 120ffdbd733Ssam #define dq_isoftlimit dq_dqb.dqb_isoftlimit 121ffdbd733Ssam #define dq_curinodes dq_dqb.dqb_curinodes 1224d67415cSmckusick #define dq_btime dq_dqb.dqb_btime 1234d67415cSmckusick #define dq_itime dq_dqb.dqb_itime 124ffdbd733Ssam 1254d67415cSmckusick /* 1264d67415cSmckusick * If the system has never checked for a quota for this file, 1274d67415cSmckusick * then it is set to NODQUOT. Once a write attempt is made 1284d67415cSmckusick * the inode pointer is set to reference a dquot structure. 1294d67415cSmckusick */ 1302debeb82Skre #define NODQUOT ((struct dquot *) 0) 1312debeb82Skre 1322debeb82Skre /* 1334d67415cSmckusick * Flags to chkdq() and chkiq() 1342debeb82Skre */ 1354d67415cSmckusick #define FORCE 0x01 /* force usage changes independent of limits */ 1364d67415cSmckusick #define CHOWN 0x02 /* (advisory) change initiated by chown */ 137ffdbd733Ssam 138ffdbd733Ssam /* 1394d67415cSmckusick * Macros to avoid subroutine calls to trivial functions. 140ffdbd733Ssam */ 1414d67415cSmckusick #ifndef DIAGNOSTIC 1424d67415cSmckusick #define DQREF(dq) (dq)->dq_cnt++ 1434d67415cSmckusick #else 1444d67415cSmckusick #define DQREF(dq) dqref(dq) 1454d67415cSmckusick #endif /* DIAGNOSTIC */ 146*873c056cSdonn 147*873c056cSdonn #else 148*873c056cSdonn 149*873c056cSdonn #include <sys/cdefs.h> 150*873c056cSdonn 151*873c056cSdonn __BEGIN_DECLS 152*873c056cSdonn int quotactl __P((const char *, int, int, void *)); 153*873c056cSdonn __END_DECLS 154*873c056cSdonn 1554d67415cSmckusick #endif /* KERNEL */ 1563c1ddcbeSmckusick #endif /* _QUOTA_ */ 157