/** quotaio.h * * Interface to the quota library. * * The quota library provides interface for creating and updating the quota * files and the ext4 superblock fields. It supports the new VFS_V1 quota * format. The quota library also provides support for keeping track of quotas * in memory. * * Aditya Kali * Header of IO operations for quota utilities * * Jan Kara * * Hyojun Kim - Ported to f2fs-tools */ #ifndef GUARD_QUOTAIO_H #define GUARD_QUOTAIO_H #include #include #include #include #include "dict.h" #include "f2fs_fs.h" #include "f2fs.h" #include "node.h" #include "fsck.h" #include "dqblk_v2.h" typedef int64_t qsize_t; /* Type in which we store size limitations */ typedef int32_t f2fs_ino_t; typedef int errcode_t; enum quota_type { USRQUOTA = 0, GRPQUOTA = 1, PRJQUOTA = 2, MAXQUOTAS = 3, }; #if MAXQUOTAS > 32 #error "cannot have more than 32 quota types to fit in qtype_bits" #endif #define QUOTA_USR_BIT (1 << USRQUOTA) #define QUOTA_GRP_BIT (1 << GRPQUOTA) #define QUOTA_PRJ_BIT (1 << PRJQUOTA) #define QUOTA_ALL_BIT (QUOTA_USR_BIT | QUOTA_GRP_BIT | QUOTA_PRJ_BIT) typedef struct quota_ctx *quota_ctx_t; struct quota_ctx { struct f2fs_sb_info *sbi; struct dict_t *quota_dict[MAXQUOTAS]; struct quota_handle *quota_file[MAXQUOTAS]; struct dict_t linked_inode_dict; }; /* * Definitions of magics and versions of current quota files */ #define INITQMAGICS {\ 0xd9c01f11, /* USRQUOTA */\ 0xd9c01927, /* GRPQUOTA */\ 0xd9c03f14 /* PRJQUOTA */\ } /* Size of blocks in which are counted size limits in generic utility parts */ #define QUOTABLOCK_BITS 10 #define QUOTABLOCK_SIZE (1 << QUOTABLOCK_BITS) #define toqb(x) (((x) + QUOTABLOCK_SIZE - 1) >> QUOTABLOCK_BITS) /* Quota format type IDs */ #define QFMT_VFS_OLD 1 #define QFMT_VFS_V0 2 #define QFMT_VFS_V1 4 /* * The following constants define the default amount of time given a user * before the soft limits are treated as hard limits (usually resulting * in an allocation failure). The timer is started when the user crosses * their soft limit, it is reset when they go below their soft limit. */ #define MAX_IQ_TIME 604800 /* (7*24*60*60) 1 week */ #define MAX_DQ_TIME 604800 /* (7*24*60*60) 1 week */ #define IOFL_INFODIRTY 0x01 /* Did info change? */ struct quotafile_ops; /* Generic information about quotafile */ struct util_dqinfo { time_t dqi_bgrace; /* Block grace time for given quotafile */ time_t dqi_igrace; /* Inode grace time for given quotafile */ union { struct v2_mem_dqinfo v2_mdqi; } u; /* Format specific info about quotafile */ }; struct quota_file { struct f2fs_sb_info *sbi; f2fs_ino_t ino; int64_t filesize; }; /* Structure for one opened quota file */ struct quota_handle { enum quota_type qh_type; /* Type of quotafile */ int qh_fmt; /* Quotafile format */ int qh_file_flags; int qh_io_flags; /* IO flags for file */ struct quota_file qh_qf; unsigned int (*read)(struct quota_file *qf, long offset, void *buf, unsigned int size); unsigned int (*write)(struct quota_file *qf, long offset, void *buf, unsigned int size); struct quotafile_ops *qh_ops; /* Operations on quotafile */ struct util_dqinfo qh_info; /* Generic quotafile info */ }; /* Utility quota block */ struct util_dqblk { qsize_t dqb_ihardlimit; qsize_t dqb_isoftlimit; qsize_t dqb_curinodes; qsize_t dqb_bhardlimit; qsize_t dqb_bsoftlimit; qsize_t dqb_curspace; time_t dqb_btime; time_t dqb_itime; union { struct v2_mem_dqblk v2_mdqb; } u; /* Format specific dquot information */ }; /* Structure for one loaded quota */ struct dquot { struct dquot *dq_next; /* Pointer to next dquot in the list */ qid_t dq_id; /* ID dquot belongs to */ int dq_flags; /* Some flags for utils */ struct quota_handle *dq_h; /* Handle of quotafile for this dquot */ struct util_dqblk dq_dqb; /* Parsed data of dquot */ }; #define DQF_SEEN 0x0001 /* Structure of quotafile operations */ struct quotafile_ops { /* Check whether quotafile is in our format */ int (*check_file) (struct quota_handle *h, int type); /* Open quotafile */ int (*init_io) (struct quota_handle *h); /* Create new quotafile */ int (*new_io) (struct quota_handle *h); /* Write all changes and close quotafile */ int (*end_io) (struct quota_handle *h); /* Write info about quotafile */ int (*write_info) (struct quota_handle *h); /* Read dquot into memory */ struct dquot *(*read_dquot) (struct quota_handle *h, qid_t id); /* Write given dquot to disk */ int (*commit_dquot) (struct dquot *dquot); /* Scan quotafile and call callback on every structure */ int (*scan_dquots) (struct quota_handle *h, int (*process_dquot) (struct dquot *dquot, void *data), void *data); /* Function to print format specific file information */ int (*report) (struct quota_handle *h, int verbose); }; #ifdef __CHECKER__ # ifndef __bitwise # define __bitwise __attribute__((bitwise)) # endif #define __force __attribute__((force)) #else # ifndef __bitwise # define __bitwise # endif #define __force #endif #define be32_to_cpu(n) ntohl(n) /* Open existing quotafile of given type (and verify its format) on given * filesystem. */ errcode_t quota_file_open(struct f2fs_sb_info *sbi, struct quota_handle *h, enum quota_type qtype, int flags); /* Create new quotafile of specified format on given filesystem */ errcode_t quota_file_create(struct f2fs_sb_info *sbi, struct quota_handle *h, enum quota_type qtype); /* Close quotafile */ errcode_t quota_file_close(struct f2fs_sb_info *sbi, struct quota_handle *h, int update_filesize); /* Get empty quota structure */ struct dquot *get_empty_dquot(void); const char *quota_type2name(enum quota_type qtype); void update_grace_times(struct dquot *q); /* In mkquota.c */ errcode_t quota_init_context(struct f2fs_sb_info *sbi); void quota_data_inodes(quota_ctx_t qctx, struct f2fs_inode *inode, int adjust); void quota_data_add(quota_ctx_t qctx, struct f2fs_inode *inode, qsize_t space); void quota_data_sub(quota_ctx_t qctx, struct f2fs_inode *inode, qsize_t space); errcode_t quota_write_inode(struct f2fs_sb_info *sbi, enum quota_type qtype); void quota_add_inode_usage(quota_ctx_t qctx, f2fs_ino_t ino, struct f2fs_inode* inode); void quota_release_context(quota_ctx_t *qctx); errcode_t quota_compare_and_update(struct f2fs_sb_info *sbi, enum quota_type qtype, int *usage_inconsistent, int preserve_limits); static inline errcode_t quota_get_mem(unsigned long size, void *ptr) { void *pp; pp = malloc(size); if (!pp) return -1; memcpy(ptr, &pp, sizeof (pp)); return 0; } static inline errcode_t quota_get_memzero(unsigned long size, void *ptr) { void *pp; pp = malloc(size); if (!pp) return -1; memset(pp, 0, size); memcpy(ptr, &pp, sizeof(pp)); return 0; } static inline errcode_t quota_free_mem(void *ptr) { void *p; memcpy(&p, ptr, sizeof(p)); free(p); p = 0; memcpy(ptr, &p, sizeof(p)); return 0; } #endif /* GUARD_QUOTAIO_H */