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Diffstat (limited to 'libdde-linux26/libdde_linux26/contrib/include/linux/quota.h')
| -rw-r--r-- | libdde-linux26/libdde_linux26/contrib/include/linux/quota.h | 404 |
1 files changed, 0 insertions, 404 deletions
diff --git a/libdde-linux26/libdde_linux26/contrib/include/linux/quota.h b/libdde-linux26/libdde_linux26/contrib/include/linux/quota.h deleted file mode 100644 index d72d5d84..00000000 --- a/libdde-linux26/libdde_linux26/contrib/include/linux/quota.h +++ /dev/null @@ -1,404 +0,0 @@ -/* - * Copyright (c) 1982, 1986 Regents of the University of California. - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Robert Elz at The University of Melbourne. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef _LINUX_QUOTA_ -#define _LINUX_QUOTA_ - -#include <linux/errno.h> -#include <linux/types.h> - -#define __DQUOT_VERSION__ "dquot_6.5.2" - -#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 */ \ - "undefined", \ -}; - -/* - * 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_SYNC 0x800001 /* sync disk copy of a filesystems quotas */ -#define Q_QUOTAON 0x800002 /* turn quotas on */ -#define Q_QUOTAOFF 0x800003 /* turn quotas off */ -#define Q_GETFMT 0x800004 /* get quota format used on given filesystem */ -#define Q_GETINFO 0x800005 /* get information about quota files */ -#define Q_SETINFO 0x800006 /* set information about quota files */ -#define Q_GETQUOTA 0x800007 /* get user quota structure */ -#define Q_SETQUOTA 0x800008 /* set user quota structure */ - -/* Quota format type IDs */ -#define QFMT_VFS_OLD 1 -#define QFMT_VFS_V0 2 - -/* Size of block in which space limits are passed through the quota - * interface */ -#define QIF_DQBLKSIZE_BITS 10 -#define QIF_DQBLKSIZE (1 << QIF_DQBLKSIZE_BITS) - -/* - * Quota structure used for communication with userspace via quotactl - * Following flags are used to specify which fields are valid - */ -enum { - QIF_BLIMITS_B = 0, - QIF_SPACE_B, - QIF_ILIMITS_B, - QIF_INODES_B, - QIF_BTIME_B, - QIF_ITIME_B, -}; - -#define QIF_BLIMITS (1 << QIF_BLIMITS_B) -#define QIF_SPACE (1 << QIF_SPACE_B) -#define QIF_ILIMITS (1 << QIF_ILIMITS_B) -#define QIF_INODES (1 << QIF_INODES_B) -#define QIF_BTIME (1 << QIF_BTIME_B) -#define QIF_ITIME (1 << QIF_ITIME_B) -#define QIF_LIMITS (QIF_BLIMITS | QIF_ILIMITS) -#define QIF_USAGE (QIF_SPACE | QIF_INODES) -#define QIF_TIMES (QIF_BTIME | QIF_ITIME) -#define QIF_ALL (QIF_LIMITS | QIF_USAGE | QIF_TIMES) - -struct if_dqblk { - __u64 dqb_bhardlimit; - __u64 dqb_bsoftlimit; - __u64 dqb_curspace; - __u64 dqb_ihardlimit; - __u64 dqb_isoftlimit; - __u64 dqb_curinodes; - __u64 dqb_btime; - __u64 dqb_itime; - __u32 dqb_valid; -}; - -/* - * Structure used for setting quota information about file via quotactl - * Following flags are used to specify which fields are valid - */ -#define IIF_BGRACE 1 -#define IIF_IGRACE 2 -#define IIF_FLAGS 4 -#define IIF_ALL (IIF_BGRACE | IIF_IGRACE | IIF_FLAGS) - -struct if_dqinfo { - __u64 dqi_bgrace; - __u64 dqi_igrace; - __u32 dqi_flags; - __u32 dqi_valid; -}; - -/* - * Definitions for quota netlink interface - */ -#define QUOTA_NL_NOWARN 0 -#define QUOTA_NL_IHARDWARN 1 /* Inode hardlimit reached */ -#define QUOTA_NL_ISOFTLONGWARN 2 /* Inode grace time expired */ -#define QUOTA_NL_ISOFTWARN 3 /* Inode softlimit reached */ -#define QUOTA_NL_BHARDWARN 4 /* Block hardlimit reached */ -#define QUOTA_NL_BSOFTLONGWARN 5 /* Block grace time expired */ -#define QUOTA_NL_BSOFTWARN 6 /* Block softlimit reached */ -#define QUOTA_NL_IHARDBELOW 7 /* Usage got below inode hardlimit */ -#define QUOTA_NL_ISOFTBELOW 8 /* Usage got below inode softlimit */ -#define QUOTA_NL_BHARDBELOW 9 /* Usage got below block hardlimit */ -#define QUOTA_NL_BSOFTBELOW 10 /* Usage got below block softlimit */ - -enum { - QUOTA_NL_C_UNSPEC, - QUOTA_NL_C_WARNING, - __QUOTA_NL_C_MAX, -}; -#define QUOTA_NL_C_MAX (__QUOTA_NL_C_MAX - 1) - -enum { - QUOTA_NL_A_UNSPEC, - QUOTA_NL_A_QTYPE, - QUOTA_NL_A_EXCESS_ID, - QUOTA_NL_A_WARNING, - QUOTA_NL_A_DEV_MAJOR, - QUOTA_NL_A_DEV_MINOR, - QUOTA_NL_A_CAUSED_ID, - __QUOTA_NL_A_MAX, -}; -#define QUOTA_NL_A_MAX (__QUOTA_NL_A_MAX - 1) - - -#ifdef __KERNEL__ -#include <linux/list.h> -#include <linux/mutex.h> -#include <linux/rwsem.h> -#include <linux/spinlock.h> -#include <linux/wait.h> - -#include <linux/dqblk_xfs.h> -#include <linux/dqblk_v1.h> -#include <linux/dqblk_v2.h> - -#include <asm/atomic.h> - -typedef __kernel_uid32_t qid_t; /* Type in which we store ids in memory */ -typedef long long qsize_t; /* Type in which we store sizes */ - -extern spinlock_t dq_data_lock; - -/* Maximal numbers of writes for quota operation (insert/delete/update) - * (over VFS all formats) */ -#define DQUOT_INIT_ALLOC max(V1_INIT_ALLOC, V2_INIT_ALLOC) -#define DQUOT_INIT_REWRITE max(V1_INIT_REWRITE, V2_INIT_REWRITE) -#define DQUOT_DEL_ALLOC max(V1_DEL_ALLOC, V2_DEL_ALLOC) -#define DQUOT_DEL_REWRITE max(V1_DEL_REWRITE, V2_DEL_REWRITE) - -/* - * Data for one user/group kept in memory - */ -struct mem_dqblk { - qsize_t dqb_bhardlimit; /* absolute limit on disk blks alloc */ - qsize_t dqb_bsoftlimit; /* preferred limit on disk blks */ - qsize_t dqb_curspace; /* current used space */ - qsize_t dqb_ihardlimit; /* absolute limit on allocated inodes */ - qsize_t dqb_isoftlimit; /* preferred inode limit */ - qsize_t dqb_curinodes; /* current # allocated inodes */ - time_t dqb_btime; /* time limit for excessive disk use */ - time_t dqb_itime; /* time limit for excessive inode use */ -}; - -/* - * Data for one quotafile kept in memory - */ -struct quota_format_type; - -struct mem_dqinfo { - struct quota_format_type *dqi_format; - int dqi_fmt_id; /* Id of the dqi_format - used when turning - * quotas on after remount RW */ - struct list_head dqi_dirty_list; /* List of dirty dquots */ - unsigned long dqi_flags; - unsigned int dqi_bgrace; - unsigned int dqi_igrace; - qsize_t dqi_maxblimit; - qsize_t dqi_maxilimit; - void *dqi_priv; -}; - -struct super_block; - -#define DQF_MASK 0xffff /* Mask for format specific flags */ -#define DQF_INFO_DIRTY_B 16 -#define DQF_INFO_DIRTY (1 << DQF_INFO_DIRTY_B) /* Is info dirty? */ - -extern void mark_info_dirty(struct super_block *sb, int type); -static inline int info_dirty(struct mem_dqinfo *info) -{ - return test_bit(DQF_INFO_DIRTY_B, &info->dqi_flags); -} - -struct dqstats { - int lookups; - int drops; - int reads; - int writes; - int cache_hits; - int allocated_dquots; - int free_dquots; - int syncs; -}; - -extern struct dqstats dqstats; - -#define DQ_MOD_B 0 /* dquot modified since read */ -#define DQ_BLKS_B 1 /* uid/gid has been warned about blk limit */ -#define DQ_INODES_B 2 /* uid/gid has been warned about inode limit */ -#define DQ_FAKE_B 3 /* no limits only usage */ -#define DQ_READ_B 4 /* dquot was read into memory */ -#define DQ_ACTIVE_B 5 /* dquot is active (dquot_release not called) */ -#define DQ_LASTSET_B 6 /* Following 6 bits (see QIF_) are reserved\ - * for the mask of entries set via SETQUOTA\ - * quotactl. They are set under dq_data_lock\ - * and the quota format handling dquot can\ - * clear them when it sees fit. */ - -struct dquot { - struct hlist_node dq_hash; /* Hash list in memory */ - struct list_head dq_inuse; /* List of all quotas */ - struct list_head dq_free; /* Free list element */ - struct list_head dq_dirty; /* List of dirty dquots */ - struct mutex dq_lock; /* dquot IO lock */ - atomic_t dq_count; /* Use count */ - wait_queue_head_t dq_wait_unused; /* Wait queue for dquot to become unused */ - struct super_block *dq_sb; /* superblock this applies to */ - unsigned int dq_id; /* ID this applies to (uid, gid) */ - loff_t dq_off; /* Offset of dquot on disk */ - unsigned long dq_flags; /* See DQ_* */ - short dq_type; /* Type of quota */ - struct mem_dqblk dq_dqb; /* Diskquota usage */ -}; - -#define NODQUOT (struct dquot *)NULL - -#define QUOTA_OK 0 -#define NO_QUOTA 1 - -/* Operations which must be implemented by each quota format */ -struct quota_format_ops { - int (*check_quota_file)(struct super_block *sb, int type); /* Detect whether file is in our format */ - int (*read_file_info)(struct super_block *sb, int type); /* Read main info about file - called on quotaon() */ - int (*write_file_info)(struct super_block *sb, int type); /* Write main info about file */ - int (*free_file_info)(struct super_block *sb, int type); /* Called on quotaoff() */ - int (*read_dqblk)(struct dquot *dquot); /* Read structure for one user */ - int (*commit_dqblk)(struct dquot *dquot); /* Write structure for one user */ - int (*release_dqblk)(struct dquot *dquot); /* Called when last reference to dquot is being dropped */ -}; - -/* Operations working with dquots */ -struct dquot_operations { - int (*initialize) (struct inode *, int); - int (*drop) (struct inode *); - int (*alloc_space) (struct inode *, qsize_t, int); - int (*alloc_inode) (const struct inode *, qsize_t); - int (*free_space) (struct inode *, qsize_t); - int (*free_inode) (const struct inode *, qsize_t); - int (*transfer) (struct inode *, struct iattr *); - int (*write_dquot) (struct dquot *); /* Ordinary dquot write */ - struct dquot *(*alloc_dquot)(struct super_block *, int); /* Allocate memory for new dquot */ - void (*destroy_dquot)(struct dquot *); /* Free memory for dquot */ - int (*acquire_dquot) (struct dquot *); /* Quota is going to be created on disk */ - int (*release_dquot) (struct dquot *); /* Quota is going to be deleted from disk */ - int (*mark_dirty) (struct dquot *); /* Dquot is marked dirty */ - int (*write_info) (struct super_block *, int); /* Write of quota "superblock" */ -}; - -/* Operations handling requests from userspace */ -struct quotactl_ops { - int (*quota_on)(struct super_block *, int, int, char *, int); - int (*quota_off)(struct super_block *, int, int); - int (*quota_sync)(struct super_block *, int); - int (*get_info)(struct super_block *, int, struct if_dqinfo *); - int (*set_info)(struct super_block *, int, struct if_dqinfo *); - int (*get_dqblk)(struct super_block *, int, qid_t, struct if_dqblk *); - int (*set_dqblk)(struct super_block *, int, qid_t, struct if_dqblk *); - int (*get_xstate)(struct super_block *, struct fs_quota_stat *); - int (*set_xstate)(struct super_block *, unsigned int, int); - int (*get_xquota)(struct super_block *, int, qid_t, struct fs_disk_quota *); - int (*set_xquota)(struct super_block *, int, qid_t, struct fs_disk_quota *); -}; - -struct quota_format_type { - int qf_fmt_id; /* Quota format id */ - struct quota_format_ops *qf_ops; /* Operations of format */ - struct module *qf_owner; /* Module implementing quota format */ - struct quota_format_type *qf_next; -}; - -/* Quota state flags - they actually come in two flavors - for users and groups */ -enum { - _DQUOT_USAGE_ENABLED = 0, /* Track disk usage for users */ - _DQUOT_LIMITS_ENABLED, /* Enforce quota limits for users */ - _DQUOT_SUSPENDED, /* User diskquotas are off, but - * we have necessary info in - * memory to turn them on */ - _DQUOT_STATE_FLAGS -}; -#define DQUOT_USAGE_ENABLED (1 << _DQUOT_USAGE_ENABLED) -#define DQUOT_LIMITS_ENABLED (1 << _DQUOT_LIMITS_ENABLED) -#define DQUOT_SUSPENDED (1 << _DQUOT_SUSPENDED) -#define DQUOT_STATE_FLAGS (DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED | \ - DQUOT_SUSPENDED) -/* Other quota flags */ -#define DQUOT_QUOTA_SYS_FILE (1 << 6) /* Quota file is a special - * system file and user cannot - * touch it. Filesystem is - * responsible for setting - * S_NOQUOTA, S_NOATIME flags - */ -#define DQUOT_NEGATIVE_USAGE (1 << 7) /* Allow negative quota usage */ - -static inline unsigned int dquot_state_flag(unsigned int flags, int type) -{ - if (type == USRQUOTA) - return flags; - return flags << _DQUOT_STATE_FLAGS; -} - -static inline unsigned int dquot_generic_flag(unsigned int flags, int type) -{ - if (type == USRQUOTA) - return flags; - return flags >> _DQUOT_STATE_FLAGS; -} - -struct quota_info { - unsigned int flags; /* Flags for diskquotas on this device */ - struct mutex dqio_mutex; /* lock device while I/O in progress */ - struct mutex dqonoff_mutex; /* Serialize quotaon & quotaoff */ - struct rw_semaphore dqptr_sem; /* serialize ops using quota_info struct, pointers from inode to dquots */ - struct inode *files[MAXQUOTAS]; /* inodes of quotafiles */ - struct mem_dqinfo info[MAXQUOTAS]; /* Information for each quota type */ - struct quota_format_ops *ops[MAXQUOTAS]; /* Operations for each type */ -}; - -int register_quota_format(struct quota_format_type *fmt); -void unregister_quota_format(struct quota_format_type *fmt); - -struct quota_module_name { - int qm_fmt_id; - char *qm_mod_name; -}; - -#define INIT_QUOTA_MODULE_NAMES {\ - {QFMT_VFS_OLD, "quota_v1"},\ - {QFMT_VFS_V0, "quota_v2"},\ - {0, NULL}} - -#else - -# /* nodep */ include <sys/cdefs.h> - -__BEGIN_DECLS -long quotactl __P ((unsigned int, const char *, int, caddr_t)); -__END_DECLS - -#endif /* __KERNEL__ */ -#endif /* _QUOTA_ */ |