mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 03:16:39 +07:00
926132c025
Q_GETNEXTQUOTA is exactly like Q_GETQUOTA, except that it will return quota information for the id equal to or greater than the id requested. In other words, if the requested id has no quota, the command will return quota information for the next higher id which does have a quota set. If no higher id has an active quota, -ESRCH is returned. This allows filesystems to do efficient iteration in kernelspace, much like extN filesystems do in userspace when asked to report all active quotas. This does require a new data structure for userspace, as the current structure does not include an ID for the returned quota information. Today, Ext4 with a hidden quota inode requires getpwent-style iterations, and for systems which have i.e. LDAP backends, this can be very slow, or even impossible if iteration is not allowed in the configuration. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Dave Chinner <david@fromorbit.com>
200 lines
6.2 KiB
C
200 lines
6.2 KiB
C
/*
|
|
* 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 _UAPI_LINUX_QUOTA_
|
|
#define _UAPI_LINUX_QUOTA_
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/types.h>
|
|
|
|
#define __DQUOT_VERSION__ "dquot_6.6.0"
|
|
|
|
#define MAXQUOTAS 3
|
|
#define USRQUOTA 0 /* element used for user quotas */
|
|
#define GRPQUOTA 1 /* element used for group quotas */
|
|
#define PRJQUOTA 2 /* element used for project quotas */
|
|
|
|
/*
|
|
* Definitions for the default names of the quotas files.
|
|
*/
|
|
#define INITQFNAMES { \
|
|
"user", /* USRQUOTA */ \
|
|
"group", /* GRPQUOTA */ \
|
|
"project", /* PRJQUOTA */ \
|
|
"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 */
|
|
#define Q_GETNEXTQUOTA 0x800009 /* get disk limits and usage >= ID */
|
|
|
|
/* Quota format type IDs */
|
|
#define QFMT_VFS_OLD 1
|
|
#define QFMT_VFS_V0 2
|
|
#define QFMT_OCFS2 3
|
|
#define QFMT_VFS_V1 4
|
|
|
|
/* 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;
|
|
};
|
|
|
|
struct if_nextdqblk {
|
|
__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;
|
|
__u32 dqb_id;
|
|
};
|
|
|
|
/*
|
|
* 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)
|
|
|
|
enum {
|
|
DQF_ROOT_SQUASH_B = 0,
|
|
DQF_SYS_FILE_B = 16,
|
|
/* Kernel internal flags invisible to userspace */
|
|
DQF_PRIVATE
|
|
};
|
|
|
|
/* Root squash enabled (for v1 quota format) */
|
|
#define DQF_ROOT_SQUASH (1 << DQF_ROOT_SQUASH_B)
|
|
/* Quota stored in a system file */
|
|
#define DQF_SYS_FILE (1 << DQF_SYS_FILE_B)
|
|
|
|
struct if_dqinfo {
|
|
__u64 dqi_bgrace;
|
|
__u64 dqi_igrace;
|
|
__u32 dqi_flags; /* DFQ_* */
|
|
__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)
|
|
|
|
|
|
#endif /* _UAPI_LINUX_QUOTA_ */
|