fs/quota/quotaio_v2.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  *  Definitions of structures for vfsv0 quota format
0004  */
0005
0006 #ifndef _LINUX_QUOTAIO_V2_H
0007 #define _LINUX_QUOTAIO_V2_H
0008
0009 #include <linux/types.h>
0010 #include <linux/quota.h>
0011
0012 /*
0013  * Definitions of magics and versions of current quota files
0014  */
0015 #define V2_INITQMAGICS {\
0016     0xd9c01f11, /* USRQUOTA */\
0017     0xd9c01927, /* GRPQUOTA */\
0018     0xd9c03f14, /* PRJQUOTA */\
0019 }
0020
0021 #define V2_INITQVERSIONS {\
0022     1,      /* USRQUOTA */\
0023     1,      /* GRPQUOTA */\
0024     1,      /* PRJQUOTA */\
0025 }
0026
0027 /* First generic header */
0028 struct v2_disk_dqheader {
0029     __le32 dqh_magic;   /* Magic number identifying file */
0030     __le32 dqh_version; /* File version */
0031 };
0032
0033 /*
0034  * The following structure defines the format of the disk quota file
0035  * (as it appears on disk) - the file is a radix tree whose leaves point
0036  * to blocks of these structures.
0037  */
0038 struct v2r0_disk_dqblk {
0039     __le32 dqb_id;      /* id this quota applies to */
0040     __le32 dqb_ihardlimit;  /* absolute limit on allocated inodes */
0041     __le32 dqb_isoftlimit;  /* preferred inode limit */
0042     __le32 dqb_curinodes;   /* current # allocated inodes */
0043     __le32 dqb_bhardlimit;  /* absolute limit on disk space (in QUOTABLOCK_SIZE) */
0044     __le32 dqb_bsoftlimit;  /* preferred limit on disk space (in QUOTABLOCK_SIZE) */
0045     __le64 dqb_curspace;    /* current space occupied (in bytes) */
0046     __le64 dqb_btime;   /* time limit for excessive disk use */
0047     __le64 dqb_itime;   /* time limit for excessive inode use */
0048 };
0049
0050 struct v2r1_disk_dqblk {
0051     __le32 dqb_id;      /* id this quota applies to */
0052     __le32 dqb_pad;
0053     __le64 dqb_ihardlimit;  /* absolute limit on allocated inodes */
0054     __le64 dqb_isoftlimit;  /* preferred inode limit */
0055     __le64 dqb_curinodes;   /* current # allocated inodes */
0056     __le64 dqb_bhardlimit;  /* absolute limit on disk space (in QUOTABLOCK_SIZE) */
0057     __le64 dqb_bsoftlimit;  /* preferred limit on disk space (in QUOTABLOCK_SIZE) */
0058     __le64 dqb_curspace;    /* current space occupied (in bytes) */
0059     __le64 dqb_btime;   /* time limit for excessive disk use */
0060     __le64 dqb_itime;   /* time limit for excessive inode use */
0061 };
0062
0063 /* Header with type and version specific information */
0064 struct v2_disk_dqinfo {
0065     __le32 dqi_bgrace;  /* Time before block soft limit becomes hard limit */
0066     __le32 dqi_igrace;  /* Time before inode soft limit becomes hard limit */
0067     __le32 dqi_flags;   /* Flags for quotafile (DQF_*) */
0068     __le32 dqi_blocks;  /* Number of blocks in file */
0069     __le32 dqi_free_blk;    /* Number of first free block in the list */
0070     __le32 dqi_free_entry;  /* Number of block with at least one free entry */
0071 };
0072
0073 #define V2_DQINFOOFF    sizeof(struct v2_disk_dqheader) /* Offset of info header in file */
0074 #define V2_DQBLKSIZE_BITS 10                /* Size of leaf block in tree */
0075
0076 #endif /* _LINUX_QUOTAIO_V2_H */