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#ifndef __LIBGFS2_DOT_H__
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#define __LIBGFS2_DOT_H__
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#include <features.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/uio.h>
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#include <linux/types.h>
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#include <linux/limits.h>
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#include <endian.h>
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#include <byteswap.h>
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#include <mntent.h>
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#include <linux/gfs2_ondisk.h>
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#include "osi_list.h"
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#include "osi_tree.h"
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__BEGIN_DECLS
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#ifndef TRUE
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#define TRUE (1)
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#endif
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#ifndef FALSE
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#define FALSE (0)
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#endif
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#if __BYTE_ORDER == __BIG_ENDIAN
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#define be16_to_cpu(x) (x)
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#define be32_to_cpu(x) (x)
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#define be64_to_cpu(x) (x)
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#define cpu_to_be16(x) (x)
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#define cpu_to_be32(x) (x)
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#define cpu_to_be64(x) (x)
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#define le16_to_cpu(x) (bswap_16((x)))
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#define le32_to_cpu(x) (bswap_32((x)))
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#define le64_to_cpu(x) (bswap_64((x)))
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#define cpu_to_le16(x) (bswap_16((x)))
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#define cpu_to_le32(x) (bswap_32((x)))
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#define cpu_to_le64(x) (bswap_64((x)))
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#endif /* __BYTE_ORDER == __BIG_ENDIAN */
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define be16_to_cpu(x) (bswap_16((x)))
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#define be32_to_cpu(x) (bswap_32((x)))
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#define be64_to_cpu(x) (bswap_64((x)))
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#define cpu_to_be16(x) (bswap_16((x)))
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#define cpu_to_be32(x) (bswap_32((x)))
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#define cpu_to_be64(x) (bswap_64((x)))
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#define le16_to_cpu(x) (x)
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#define le32_to_cpu(x) (x)
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#define le64_to_cpu(x) (x)
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#define cpu_to_le16(x) (x)
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#define cpu_to_le32(x) (x)
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#define cpu_to_le64(x) (x)
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#endif /* __BYTE_ORDER == __LITTLE_ENDIAN */
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enum lgfs2_meta_type {
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LGFS2_MT_GFS2_SB = 0,
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LGFS2_MT_GFS_SB = 1,
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LGFS2_MT_RINDEX = 2,
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LGFS2_MT_GFS2_RGRP = 3,
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LGFS2_MT_GFS_RGRP = 4,
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LGFS2_MT_RGRP_BITMAP = 5,
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LGFS2_MT_GFS2_DINODE = 6,
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LGFS2_MT_GFS_DINODE = 7,
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LGFS2_MT_GFS2_INDIRECT = 8,
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LGFS2_MT_GFS_INDIRECT = 9,
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LGFS2_MT_DIR_LEAF = 10,
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LGFS2_MT_JRNL_DATA = 11,
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LGFS2_MT_GFS2_LOG_HEADER = 12,
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LGFS2_MT_GFS_LOG_HEADER = 13,
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LGFS2_MT_GFS2_LOG_DESC = 14,
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LGFS2_MT_GFS_LOG_DESC = 15,
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LGFS2_MT_GFS2_LOG_BLOCK = 16,
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LGFS2_MT_EA_ATTR = 17,
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LGFS2_MT_EA_DATA = 18,
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LGFS2_MT_GFS2_QUOTA_CHANGE = 19,
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LGFS2_MT_DIRENT = 20,
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LGFS2_MT_EA_HEADER = 21,
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LGFS2_MT_GFS2_INUM_RANGE = 22,
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LGFS2_MT_STATFS_CHANGE = 23,
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LGFS2_MT_GFS_JINDEX = 24,
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LGFS2_MT_GFS_BLOCK_TAG = 25,
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LGFS2_MT_DATA = 26,
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LGFS2_MT_FREE = 27,
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LGFS2_MT_NR,
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};
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struct lgfs2_symbolic {
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const uint32_t key;
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const char *value;
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};
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struct lgfs2_metafield {
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const char *name;
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const unsigned offset;
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const unsigned length;
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const unsigned flags;
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#define LGFS2_MFF_RESERVED 0x00001 /* Field is reserved */
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#define LGFS2_MFF_POINTER 0x00002 /* Field is a pointer to a block */
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#define LGFS2_MFF_ENUM 0x00004 /* Field is an enum */
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#define LGFS2_MFF_MASK 0x00008 /* Field is a bitmask */
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#define LGFS2_MFF_UUID 0x00010 /* Field is a UUID */
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#define LGFS2_MFF_STRING 0x00020 /* Field in an ASCII string */
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#define LGFS2_MFF_UID 0x00040 /* Field is a UID */
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#define LGFS2_MFF_GID 0x00080 /* Field is a GID */
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#define LGFS2_MFF_MODE 0x00100 /* Field is a file mode */
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#define LGFS2_MFF_FSBLOCKS 0x00200 /* Units are fs blocks */
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#define LGFS2_MFF_BYTES 0x00400 /* Units are bytes */
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#define LGFS2_MFF_SHIFT 0x00800 /* Log_{2} quantity */
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#define LGFS2_MFF_CHECK 0x01000 /* Field is a checksum */
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#define LGFS2_MFF_SECS 0x02000 /* Units are seconds */
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#define LGFS2_MFF_NSECS 0x04000 /* Units are nsecs */
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#define LGFS2_MFF_MAJOR 0x08000 /* Major device number */
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#define LGFS2_MFF_MINOR 0x10000 /* Minor device number */
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/* If it is a pointer, then this field must be set */
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const unsigned points_to;
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/* If isenum or ismask are set, these must also be filled in */
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const struct lgfs2_symbolic *symtab;
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const unsigned nsyms;
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};
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struct lgfs2_metadata {
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const unsigned versions:2;
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#define LGFS2_MD_GFS1 0x01
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#define LGFS2_MD_GFS2 0x02
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const unsigned header:1;
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const uint32_t mh_type;
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const uint32_t mh_format;
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const char *name;
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const struct lgfs2_metafield *fields;
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const unsigned nfields;
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const unsigned size;
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};
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struct lgfs2_dev_info {
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struct stat stat;
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unsigned readonly:1;
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long ra_pages;
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int soft_block_size;
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int logical_block_size;
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unsigned int physical_block_size;
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unsigned int io_min_size;
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unsigned int io_optimal_size;
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int io_align_offset;
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uint64_t size;
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};
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struct device {
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uint64_t length;
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};
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struct gfs2_bitmap
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{
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struct gfs2_buffer_head *bi_bh;
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uint32_t bi_offset; /* The offset in the buffer of the first byte */
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uint32_t bi_start; /* The position of the first byte in this block */
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uint32_t bi_len; /* The number of bytes in this block */
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};
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struct gfs2_sbd;
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struct gfs2_inode;
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typedef struct _lgfs2_rgrps *lgfs2_rgrps_t;
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struct rgrp_tree {
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struct osi_node node;
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uint64_t start; /* The offset of the beginning of this resource group */
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uint64_t length; /* The length of this resource group */
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struct gfs2_rindex ri;
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struct gfs2_rgrp rg;
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struct gfs2_bitmap *bits;
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lgfs2_rgrps_t rgrps;
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};
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typedef struct rgrp_tree *lgfs2_rgrp_t;
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extern lgfs2_rgrps_t lgfs2_rgrps_init(struct gfs2_sbd *sdp, uint64_t align, uint64_t offset);
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extern void lgfs2_rgrps_free(lgfs2_rgrps_t *rgs);
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extern uint64_t lgfs2_rindex_entry_new(lgfs2_rgrps_t rgs, struct gfs2_rindex *entry, uint64_t addr, uint32_t len);
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extern unsigned lgfs2_rindex_read_fd(int fd, lgfs2_rgrps_t rgs);
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extern const struct gfs2_rindex *lgfs2_rindex_read_one(struct gfs2_inode *rip, lgfs2_rgrps_t rgs, unsigned i);
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extern uint64_t lgfs2_rgrp_align_addr(const lgfs2_rgrps_t rgs, uint64_t addr);
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extern uint32_t lgfs2_rgrp_align_len(const lgfs2_rgrps_t rgs, uint32_t len);
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extern unsigned lgfs2_rgsize_for_data(uint64_t blksreq, unsigned bsize);
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extern uint32_t lgfs2_rgrps_plan(const lgfs2_rgrps_t rgs, uint64_t space, uint32_t tgtsize);
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extern lgfs2_rgrp_t lgfs2_rgrps_append(lgfs2_rgrps_t rgs, struct gfs2_rindex *entry, uint32_t rg_skip);
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extern int lgfs2_rgrp_bitbuf_alloc(lgfs2_rgrp_t rg);
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extern void lgfs2_rgrp_bitbuf_free(lgfs2_rgrp_t rg);
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extern int lgfs2_rgrp_write(int fd, lgfs2_rgrp_t rg);
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extern const struct gfs2_rindex *lgfs2_rgrp_index(lgfs2_rgrp_t rg);
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extern const struct gfs2_rgrp *lgfs2_rgrp_rgrp(lgfs2_rgrp_t rg);
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extern lgfs2_rgrp_t lgfs2_rgrp_first(lgfs2_rgrps_t rgs);
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extern lgfs2_rgrp_t lgfs2_rgrp_last(lgfs2_rgrps_t rgs);
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extern lgfs2_rgrp_t lgfs2_rgrp_next(lgfs2_rgrp_t rg);
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extern lgfs2_rgrp_t lgfs2_rgrp_prev(lgfs2_rgrp_t rg);
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// Temporary function to aid API migration
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extern struct osi_node *lgfs2_rgrps_root(lgfs2_rgrps_t rgs) __attribute__((deprecated));
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struct gfs2_buffer_head {
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osi_list_t b_altlist; /* alternate list */
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uint64_t b_blocknr;
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union {
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char *b_data;
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struct iovec iov;
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};
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struct gfs2_sbd *sdp;
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int b_modified;
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};
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struct special_blocks {
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osi_list_t list;
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uint64_t block;
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};
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struct gfs2_inode {
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struct gfs2_dinode i_di;
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struct gfs2_buffer_head *i_bh;
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struct gfs2_sbd *i_sbd;
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struct rgrp_tree *i_rgd; /* performance hint */
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int bh_owned; /* Is this bh owned, iow, should we release it later? */
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};
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struct master_dir
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{
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struct gfs2_inode *inum;
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uint64_t next_inum;
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struct gfs2_inode *statfs;
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struct gfs2_inode *qinode;
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struct gfs2_inode *jiinode;
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struct gfs2_inode *riinode;
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struct gfs2_inode *rooti;
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struct gfs2_inode *pinode;
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struct gfs2_inode **journal; /* Array of journals */
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uint32_t journals; /* Journal count */
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};
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#define LGFS2_SB_ADDR(sdp) (GFS2_SB_ADDR >> (sdp)->sd_fsb2bb_shift)
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struct gfs2_sbd {
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struct gfs2_sb sd_sb; /* a copy of the ondisk structure */
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unsigned int bsize; /* The block size of the FS (in bytes) */
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unsigned int jsize; /* Size of journals (in MB) */
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unsigned int rgsize; /* Size of resource groups (in MB) */
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unsigned int qcsize; /* Size of quota change files (in MB) */
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/* Constants */
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uint32_t sd_fsb2bb;
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uint32_t sd_fsb2bb_shift;
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uint32_t sd_diptrs;
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uint32_t sd_inptrs;
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uint32_t sd_jbsize;
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uint32_t sd_hash_bsize;
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uint32_t sd_hash_bsize_shift;
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uint32_t sd_hash_ptrs;
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uint32_t sd_blocks_per_bitmap;
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uint32_t sd_max_dirres;
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uint32_t sd_max_height;
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uint32_t sd_max_jheight;
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uint64_t sd_heightsize[GFS2_MAX_META_HEIGHT];
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uint64_t sd_jheightsize[GFS2_MAX_META_HEIGHT];
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/* Not specified on the command line, but... */
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int64_t time;
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struct lgfs2_dev_info dinfo;
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struct device device;
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int device_fd;
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int path_fd;
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uint64_t fssize;
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uint64_t blks_total;
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uint64_t blks_alloced;
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uint64_t dinodes_alloced;
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uint64_t orig_rgrps;
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uint64_t rgrps;
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uint64_t new_rgrps;
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struct osi_root rgtree;
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struct osi_root rgcalc;
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struct gfs2_inode *master_dir;
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struct master_dir md;
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uint64_t rg_one_length;
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uint64_t rg_length;
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int gfs1;
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};
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struct metapath {
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unsigned int mp_list[GFS2_MAX_META_HEIGHT];
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};
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#define GFS2_DEFAULT_BSIZE (4096)
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#define GFS2_DEFAULT_JSIZE (128)
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#define GFS2_MAX_JSIZE (1024)
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#define GFS2_MIN_JSIZE (8)
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#define GFS2_DEFAULT_RGSIZE (256)
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#define GFS2_DEFAULT_UTSIZE (1)
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#define GFS2_DEFAULT_QCSIZE (1)
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#define GFS2_DEFAULT_LOCKPROTO "lock_dlm"
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#define GFS2_MIN_GROW_SIZE (10)
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#define GFS2_EXCESSIVE_RGS (10000)
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#define GFS2_MIN_RGSIZE (32)
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#define GFS2_MAX_RGSIZE (2048)
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/* meta.c */
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extern const struct lgfs2_metadata lgfs2_metadata[];
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extern const unsigned lgfs2_metadata_size;
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extern const struct lgfs2_symbolic lgfs2_metatypes[];
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extern const unsigned lgfs2_metatype_size;
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extern const struct lgfs2_symbolic lgfs2_metaformats[];
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extern const unsigned lgfs2_metaformat_size;
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extern const struct lgfs2_symbolic lgfs2_di_flags[];
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extern const unsigned lgfs2_di_flag_size;
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extern const struct lgfs2_symbolic lgfs2_lh_flags[];
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extern const unsigned lgfs2_lh_flag_size;
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extern const struct lgfs2_symbolic lgfs2_ld_types[];
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extern const unsigned lgfs2_ld_type_size;
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extern const struct lgfs2_symbolic lgfs2_ld1_types[];
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extern const unsigned lgfs2_ld1_type_size;
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extern int lgfs2_selfcheck(void);
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extern const struct lgfs2_metadata *lgfs2_find_mtype(uint32_t mh_type, const unsigned versions);
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extern const struct lgfs2_metadata *lgfs2_find_mtype_name(const char *name, const unsigned versions);
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extern const struct lgfs2_metafield *lgfs2_find_mfield_name(const char *name, const struct lgfs2_metadata *mtype);
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extern int lgfs2_field_str(char *str, const size_t size, const char *blk, const struct lgfs2_metafield *field, int hex);
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extern int lgfs2_field_assign(char *blk, const struct lgfs2_metafield *field, const void *val);
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/* block_list.c */
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extern struct special_blocks *blockfind(struct special_blocks *blist, uint64_t num);
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extern void gfs2_special_add(struct special_blocks *blocklist, uint64_t block);
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extern void gfs2_special_set(struct special_blocks *blocklist, uint64_t block);
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extern void gfs2_special_free(struct special_blocks *blist);
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extern void gfs2_special_clear(struct special_blocks *blocklist,
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uint64_t block);
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/* buf.c */
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extern struct gfs2_buffer_head *bget(struct gfs2_sbd *sdp, uint64_t num);
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extern struct gfs2_buffer_head *__bread(struct gfs2_sbd *sdp, uint64_t num,
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int line, const char *caller);
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extern int __breadm(struct gfs2_sbd *sdp, struct gfs2_buffer_head **bhs, size_t n, uint64_t block, int line, const char *caller);
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extern int bwrite(struct gfs2_buffer_head *bh);
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extern int brelse(struct gfs2_buffer_head *bh);
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extern uint32_t lgfs2_get_block_type(const struct gfs2_buffer_head *lbh);
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#define bmodified(bh) do { bh->b_modified = 1; } while(0)
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#define bread(bl, num) __bread(bl, num, __LINE__, __FUNCTION__)
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#define breadm(bl, bhs, n, block) __breadm(bl, bhs, n, block, __LINE__, __FUNCTION__)
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/* config.c */
|
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extern void lgfs2_set_debug(int enable);
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/* device_geometry.c */
|
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extern int lgfs2_get_dev_info(int fd, struct lgfs2_dev_info *i);
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extern void fix_device_geometry(struct gfs2_sbd *sdp);
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/* fs_bits.c */
|
|
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#define BFITNOENT (0xFFFFFFFF)
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|
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/* functions with blk #'s that are buffer relative */
|
|
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extern unsigned long gfs2_bitfit(const unsigned char *buffer,
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const unsigned int buflen,
|
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unsigned long goal, unsigned char old_state);
|
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|
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/* functions with blk #'s that are rgrp relative */
|
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extern uint32_t gfs2_blkalloc_internal(struct rgrp_tree *rgd, uint32_t goal,
|
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unsigned char old_state,
|
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unsigned char new_state, int do_it);
|
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extern int gfs2_check_range(struct gfs2_sbd *sdp, uint64_t blkno);
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|
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/* functions with blk #'s that are file system relative */
|
|
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extern int lgfs2_get_bitmap(struct gfs2_sbd *sdp, uint64_t blkno, struct rgrp_tree *rgd);
|
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extern int gfs2_set_bitmap(lgfs2_rgrp_t rg, uint64_t blkno, int state);
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|
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/* fs_geometry.c */
|
|
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extern uint32_t rgblocks2bitblocks(const unsigned int bsize, const uint32_t rgblocks,
|
|
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uint32_t *ri_data) __attribute__((nonnull(3)));
|
|
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extern int build_rgrps(struct gfs2_sbd *sdp, int write);
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/* fs_ops.c */
|
|
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#define IS_LEAF (1)
|
|
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#define IS_DINODE (2)
|
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|
|
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extern void find_metapath(struct gfs2_inode *ip, uint64_t block, struct metapath *mp);
|
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extern void lookup_block(struct gfs2_inode *ip, struct gfs2_buffer_head *bh,
|
|
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unsigned int height, struct metapath *mp,
|
|
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int create, int *new, uint64_t *block);
|
|
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extern struct gfs2_inode *lgfs2_inode_get(struct gfs2_sbd *sdp,
|
|
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struct gfs2_buffer_head *bh);
|
|
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extern struct gfs2_inode *lgfs2_inode_read(struct gfs2_sbd *sdp, uint64_t di_addr);
|
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extern struct gfs2_inode *is_system_inode(struct gfs2_sbd *sdp,
|
|
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uint64_t block);
|
|
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extern void inode_put(struct gfs2_inode **ip);
|
|
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extern uint64_t data_alloc(struct gfs2_inode *ip);
|
|
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extern int lgfs2_meta_alloc(struct gfs2_inode *ip, uint64_t *blkno);
|
|
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extern int lgfs2_dinode_alloc(struct gfs2_sbd *sdp, const uint64_t blksreq, uint64_t *blkno);
|
|
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extern uint64_t lgfs2_space_for_data(const struct gfs2_sbd *sdp, unsigned bsize, uint64_t bytes);
|
|
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extern int lgfs2_file_alloc(lgfs2_rgrp_t rg, uint64_t di_size, struct gfs2_inode *ip, uint32_t flags, unsigned mode);
|
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|
|
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extern int gfs2_readi(struct gfs2_inode *ip, void *buf, uint64_t offset,
|
|
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unsigned int size);
|
|
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#define gfs2_writei(ip, buf, offset, size) \
|
|
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__gfs2_writei(ip, buf, offset, size, 1)
|
|
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extern int __gfs2_writei(struct gfs2_inode *ip, void *buf, uint64_t offset,
|
|
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unsigned int size, int resize);
|
|
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extern struct gfs2_buffer_head *get_file_buf(struct gfs2_inode *ip,
|
|
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uint64_t lbn, int prealloc);
|
|
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extern int init_dinode(struct gfs2_sbd *sdp, struct gfs2_buffer_head **bhp, struct gfs2_inum *inum,
|
|
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unsigned int mode, uint32_t flags, struct gfs2_inum *parent);
|
|
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extern struct gfs2_inode *createi(struct gfs2_inode *dip, const char *filename,
|
|
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unsigned int mode, uint32_t flags);
|
|
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extern struct gfs2_inode *gfs_createi(struct gfs2_inode *dip,
|
|
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const char *filename, unsigned int mode,
|
|
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uint32_t flags);
|
|
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extern void dirent2_del(struct gfs2_inode *dip, struct gfs2_buffer_head *bh,
|
|
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struct gfs2_dirent *prev, struct gfs2_dirent *cur);
|
|
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extern int dir_search(struct gfs2_inode *dip, const char *filename, int len,
|
|
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unsigned int *type, struct gfs2_inum *inum);
|
|
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extern int gfs2_lookupi(struct gfs2_inode *dip, const char *filename, int len,
|
|
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struct gfs2_inode **ipp);
|
|
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extern int dir_add(struct gfs2_inode *dip, const char *filename, int len,
|
|
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struct gfs2_inum *inum, unsigned int type);
|
|
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extern int gfs2_dirent_del(struct gfs2_inode *dip, const char *filename,
|
|
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int filename_len);
|
|
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extern void block_map(struct gfs2_inode *ip, uint64_t lblock, int *new,
|
|
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uint64_t *dblock, uint32_t *extlen, int prealloc);
|
|
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extern int lgfs2_get_leaf_ptr(struct gfs2_inode *dip, uint32_t index, uint64_t *ptr) __attribute__((warn_unused_result));
|
|
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extern void dir_split_leaf(struct gfs2_inode *dip, uint32_t start,
|
|
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uint64_t leaf_no, struct gfs2_buffer_head *obh);
|
|
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extern void gfs2_free_block(struct gfs2_sbd *sdp, uint64_t block);
|
|
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extern int gfs2_freedi(struct gfs2_sbd *sdp, uint64_t block);
|
|
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extern int gfs2_get_leaf(struct gfs2_inode *dip, uint64_t leaf_no,
|
|
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struct gfs2_buffer_head **bhp);
|
|
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extern int gfs2_dirent_first(struct gfs2_inode *dip,
|
|
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struct gfs2_buffer_head *bh,
|
|
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struct gfs2_dirent **dent);
|
|
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extern int gfs2_dirent_next(struct gfs2_inode *dip, struct gfs2_buffer_head *bh,
|
|
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struct gfs2_dirent **dent);
|
|
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extern void build_height(struct gfs2_inode *ip, int height);
|
|
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extern void unstuff_dinode(struct gfs2_inode *ip);
|
|
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extern unsigned int calc_tree_height(struct gfs2_inode *ip, uint64_t size);
|
|
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extern int write_journal(struct gfs2_inode *jnl, unsigned bsize, unsigned blocks);
|
|
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extern int lgfs2_write_journal_data(struct gfs2_inode *ip);
|
|
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extern int lgfs2_write_filemeta(struct gfs2_inode *ip);
|
|
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extern uint32_t lgfs2_log_header_hash(char *buf);
|
|
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extern uint32_t lgfs2_log_header_crc(char *buf, unsigned bsize);
|
|
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|
|
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/* gfs1.c - GFS1 backward compatibility structures and functions */
|
|
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|
|
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#define GFS_FORMAT_SB (100) /* Super-Block */
|
|
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#define GFS_METATYPE_SB (1) /* Super-Block */
|
|
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#define GFS_FORMAT_FS (1309) /* Filesystem (all-encompassing) */
|
|
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#define GFS_FORMAT_MULTI (1401) /* Multi-Host */
|
|
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/* GFS1 Dinode types */
|
|
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#define GFS_FILE_NON (0)
|
|
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#define GFS_FILE_REG (1) /* regular file */
|
|
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#define GFS_FILE_DIR (2) /* directory */
|
|
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#define GFS_FILE_LNK (5) /* link */
|
|
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#define GFS_FILE_BLK (7) /* block device node */
|
|
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#define GFS_FILE_CHR (8) /* character device node */
|
|
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#define GFS_FILE_FIFO (101) /* fifo/pipe */
|
|
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#define GFS_FILE_SOCK (102) /* socket */
|
|
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6ef888 |
|
|
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/* GFS 1 journal block types: */
|
|
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#define GFS_LOG_DESC_METADATA (300) /* metadata */
|
|
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#define GFS_LOG_DESC_IUL (400) /* unlinked inode */
|
|
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#define GFS_LOG_DESC_IDA (401) /* de-allocated inode */
|
|
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#define GFS_LOG_DESC_Q (402) /* quota */
|
|
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#define GFS_LOG_DESC_LAST (500) /* final in a logged transaction */
|
|
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|
|
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struct gfs_indirect {
|
|
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struct gfs2_meta_header in_header;
|
|
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6ef888 |
|
|
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6ef888 |
char in_reserved[64];
|
|
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};
|
|
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|
|
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struct gfs_dinode {
|
|
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6ef888 |
struct gfs2_meta_header di_header;
|
|
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6ef888 |
|
|
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6ef888 |
struct gfs2_inum di_num; /* formal inode # and block address */
|
|
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6ef888 |
|
|
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__be32 di_mode; /* mode of file */
|
|
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__be32 di_uid; /* owner's user id */
|
|
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__be32 di_gid; /* owner's group id */
|
|
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6ef888 |
__be32 di_nlink; /* number (qty) of links to this file */
|
|
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6ef888 |
__be64 di_size; /* number (qty) of bytes in file */
|
|
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6ef888 |
__be64 di_blocks; /* number (qty) of blocks in file */
|
|
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6ef888 |
__be64 di_atime; /* time last accessed */
|
|
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6ef888 |
__be64 di_mtime; /* time last modified */
|
|
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6ef888 |
__be64 di_ctime; /* time last changed */
|
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/* Non-zero only for character or block device nodes */
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__be32 di_major; /* device major number */
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__be32 di_minor; /* device minor number */
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/* Block allocation strategy */
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__be64 di_rgrp; /* dinode rgrp block number */
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__be64 di_goal_rgrp; /* rgrp to alloc from next */
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__be32 di_goal_dblk; /* data block goal */
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__be32 di_goal_mblk; /* metadata block goal */
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__be32 di_flags; /* GFS_DIF_... */
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/* struct gfs_rindex, struct gfs_jindex, or struct gfs_dirent */
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__be32 di_payload_format; /* GFS_FORMAT_... */
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__be16 di_type; /* GFS_FILE_... type of file */
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__be16 di_height; /* height of metadata (0 == stuffed) */
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__be32 di_incarn; /* incarnation (unused, see gfs_meta_header) */
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__be16 di_pad;
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/* These only apply to directories */
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__be16 di_depth; /* Number of bits in the table */
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__be32 di_entries; /* The # (qty) of entries in the directory */
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/* This formed an on-disk chain of unused dinodes */
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struct gfs2_inum di_next_unused; /* used in old versions only */
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__be64 di_eattr; /* extended attribute block number */
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char di_reserved[56];
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};
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struct gfs_sb {
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/* Order is important; need to be able to read old superblocks
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in order to support on-disk version upgrades */
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struct gfs2_meta_header sb_header;
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__be32 sb_fs_format; /* GFS_FORMAT_FS (on-disk version) */
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__be32 sb_multihost_format; /* GFS_FORMAT_MULTI */
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__be32 sb_flags; /* ?? */
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__be32 sb_bsize; /* fundamental FS block size in bytes */
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__be32 sb_bsize_shift; /* log2(sb_bsize) */
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__be32 sb_seg_size; /* Journal segment size in FS blocks */
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/* These special inodes do not appear in any on-disk directory. */
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struct gfs2_inum sb_jindex_di; /* journal index inode */
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struct gfs2_inum sb_rindex_di; /* resource group index inode */
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struct gfs2_inum sb_root_di; /* root directory inode */
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/* Default inter-node locking protocol (lock module) and namespace */
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uint8_t sb_lockproto[GFS2_LOCKNAME_LEN]; /* lock protocol name */
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uint8_t sb_locktable[GFS2_LOCKNAME_LEN]; /* unique name for this FS */
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/* More special inodes */
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struct gfs2_inum sb_quota_di; /* quota inode */
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struct gfs2_inum sb_license_di; /* license inode */
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char sb_reserved[96];
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};
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struct gfs_rgrp {
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struct gfs2_meta_header rg_header;
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__be32 rg_flags;
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__be32 rg_free; /* Number (qty) of free data blocks */
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/* Dinodes are USEDMETA, but are handled separately from other METAs */
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__be32 rg_useddi; /* Number (qty) of dinodes (used or free) */
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__be32 rg_freedi; /* Number (qty) of unused (free) dinodes */
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struct gfs2_inum rg_freedi_list; /* 1st block in chain of free dinodes */
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/* These META statistics do not include dinodes (used or free) */
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__be32 rg_usedmeta; /* Number (qty) of used metadata blocks */
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__be32 rg_freemeta; /* Number (qty) of unused metadata blocks */
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char rg_reserved[64];
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};
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struct gfs_log_header {
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struct gfs2_meta_header lh_header;
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__be32 lh_flags; /* GFS_LOG_HEAD_... */
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__be32 lh_pad;
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__be64 lh_first; /* Block number of first header in this trans */
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__be64 lh_sequence; /* Sequence number of this transaction */
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__be64 lh_tail; /* Block number of log tail */
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__be64 lh_last_dump; /* Block number of last dump */
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uint8_t lh_reserved[64];
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};
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struct gfs_jindex {
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__be64 ji_addr; /* starting block of the journal */
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__be32 ji_nsegment; /* number (quantity) of segments in journal */
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__be32 ji_pad;
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uint8_t ji_reserved[64];
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};
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struct gfs_log_descriptor {
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struct gfs2_meta_header ld_header;
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__be32 ld_type; /* GFS_LOG_DESC_... Type of this log chunk */
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__be32 ld_length; /* Number of buffers in this chunk */
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__be32 ld_data1; /* descriptor-specific field */
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__be32 ld_data2; /* descriptor-specific field */
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uint8_t ld_reserved[64];
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};
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extern int is_gfs_dir(struct gfs2_dinode *dinode);
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extern void gfs1_lookup_block(struct gfs2_inode *ip,
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struct gfs2_buffer_head *bh,
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unsigned int height, struct metapath *mp,
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int create, int *new, uint64_t *block);
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extern void gfs1_block_map(struct gfs2_inode *ip, uint64_t lblock, int *new,
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uint64_t *dblock, uint32_t *extlen, int prealloc);
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extern int gfs1_writei(struct gfs2_inode *ip, char *buf, uint64_t offset,
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unsigned int size);
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extern int gfs1_ri_update(struct gfs2_sbd *sdp, int fd, int *rgcount, int quiet);
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extern struct gfs2_inode *lgfs2_gfs_inode_get(struct gfs2_sbd *sdp,
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struct gfs2_buffer_head *bh);
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extern struct gfs2_inode *lgfs2_gfs_inode_read(struct gfs2_sbd *sdp,
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uint64_t di_addr);
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extern void gfs_jindex_in(struct gfs_jindex *jindex, char *buf);
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extern void gfs_rgrp_in(struct gfs_rgrp *rg, struct gfs2_buffer_head *bh);
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extern void gfs_rgrp_out(struct gfs_rgrp *rg, struct gfs2_buffer_head *bh);
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/* misc.c */
|
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extern int compute_heightsize(unsigned bsize, uint64_t *heightsize,
|
|
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uint32_t *maxheight, uint32_t bsize1, int diptrs, int inptrs);
|
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extern int compute_constants(struct gfs2_sbd *sdp);
|
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extern int lgfs2_open_mnt(const char *path, int dirflags, int *dirfd, int devflags, int *devfd, struct mntent **mnt);
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extern int lgfs2_open_mnt_dev(const char *path, int flags, struct mntent **mnt);
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extern int lgfs2_open_mnt_dir(const char *path, int flags, struct mntent **mnt);
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/* recovery.c */
|
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extern void gfs2_replay_incr_blk(struct gfs2_inode *ip, unsigned int *blk);
|
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extern int gfs2_replay_read_block(struct gfs2_inode *ip, unsigned int blk,
|
|
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struct gfs2_buffer_head **bh);
|
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extern int gfs2_revoke_add(struct gfs2_sbd *sdp, uint64_t blkno, unsigned int where);
|
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extern int gfs2_revoke_check(struct gfs2_sbd *sdp, uint64_t blkno,
|
|
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unsigned int where);
|
|
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extern void gfs2_revoke_clean(struct gfs2_sbd *sdp);
|
|
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extern int get_log_header(struct gfs2_inode *ip, unsigned int blk,
|
|
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struct gfs2_log_header *head);
|
|
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extern int gfs2_find_jhead(struct gfs2_inode *ip, struct gfs2_log_header *head);
|
|
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extern int clean_journal(struct gfs2_inode *ip, struct gfs2_log_header *head);
|
|
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|
|
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/* rgrp.c */
|
|
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extern int gfs2_compute_bitstructs(const uint32_t bsize, struct rgrp_tree *rgd);
|
|
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extern struct rgrp_tree *gfs2_blk2rgrpd(struct gfs2_sbd *sdp, uint64_t blk);
|
|
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extern int lgfs2_rgrp_crc_check(char *buf);
|
|
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extern void lgfs2_rgrp_crc_set(char *buf);
|
|
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extern uint64_t gfs2_rgrp_read(struct gfs2_sbd *sdp, struct rgrp_tree *rgd);
|
|
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extern void gfs2_rgrp_relse(struct rgrp_tree *rgd);
|
|
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extern struct rgrp_tree *rgrp_insert(struct osi_root *rgtree,
|
|
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uint64_t rgblock);
|
|
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extern void gfs2_rgrp_free(struct osi_root *rgrp_tree);
|
|
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/* figure out the size of the given resource group, in blocks */
|
|
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static inline unsigned int rgrp_size(struct rgrp_tree *rgrp)
|
|
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{
|
|
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return rgrp->ri.ri_data + rgrp->ri.ri_length;
|
|
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}
|
|
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|
|
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/* structures.c */
|
|
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extern int build_master(struct gfs2_sbd *sdp);
|
|
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extern void lgfs2_sb_init(struct gfs2_sb *sb, unsigned bsize);
|
|
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extern int lgfs2_sb_write(const struct gfs2_sb *sb, int fd, const unsigned bsize);
|
|
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extern int build_journal(struct gfs2_sbd *sdp, int j,
|
|
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struct gfs2_inode *jindex);
|
|
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extern int build_jindex(struct gfs2_sbd *sdp);
|
|
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extern int lgfs2_build_jindex(struct gfs2_inode *master, struct gfs2_inum *jnls, size_t nmemb);
|
|
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extern int build_per_node(struct gfs2_sbd *sdp);
|
|
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extern int build_inum(struct gfs2_sbd *sdp);
|
|
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extern int build_statfs(struct gfs2_sbd *sdp);
|
|
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extern int build_rindex(struct gfs2_sbd *sdp);
|
|
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extern int build_quota(struct gfs2_sbd *sdp);
|
|
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extern int build_root(struct gfs2_sbd *sdp);
|
|
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extern int do_init_inum(struct gfs2_sbd *sdp);
|
|
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extern int do_init_statfs(struct gfs2_sbd *sdp);
|
|
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extern int gfs2_check_meta(struct gfs2_buffer_head *bh, int type);
|
|
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extern unsigned lgfs2_bm_scan(struct rgrp_tree *rgd, unsigned idx,
|
|
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uint64_t *buf, uint8_t state);
|
|
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extern int build_inum_range(struct gfs2_inode *per_node, unsigned int j);
|
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extern int build_statfs_change(struct gfs2_inode *per_node, unsigned int j);
|
|
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extern int build_quota_change(struct gfs2_inode *per_node, unsigned int j);
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|
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/* super.c */
|
|
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extern int check_sb(struct gfs2_sb *sb);
|
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extern int read_sb(struct gfs2_sbd *sdp);
|
|
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extern int rindex_read(struct gfs2_sbd *sdp, int fd, uint64_t *count1,
|
|
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int *sane);
|
|
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extern int ri_update(struct gfs2_sbd *sdp, int fd, int *rgcount, int *sane);
|
|
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extern int write_sb(struct gfs2_sbd *sdp);
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/* ondisk.c */
|
|
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extern uint32_t gfs2_disk_hash(const char *data, int len);
|
|
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extern void print_it(const char *label, const char *fmt, const char *fmt2, ...)
|
|
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__attribute__((format(printf,2,4)));
|
|
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/* Translation functions */
|
|
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|
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extern void gfs2_inum_in(struct gfs2_inum *no, char *buf);
|
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extern void gfs2_inum_out(const struct gfs2_inum *no, char *buf);
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extern void gfs2_meta_header_in(struct gfs2_meta_header *mh, char *buf);
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extern void gfs2_meta_header_out(const struct gfs2_meta_header *mh, char *buf);
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extern void gfs2_sb_in(struct gfs2_sb *sb, char *buf);
|
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extern void gfs2_sb_out(const struct gfs2_sb *sb, char *buf);
|
|
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extern void gfs2_rindex_in(struct gfs2_rindex *ri, char *buf);
|
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extern void gfs2_rindex_out(const struct gfs2_rindex *ri, char *buf);
|
|
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extern void gfs2_rgrp_in(struct gfs2_rgrp *rg, char *buf);
|
|
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extern void gfs2_rgrp_out(const struct gfs2_rgrp *rg, char *buf);
|
|
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extern void gfs2_quota_in(struct gfs2_quota *qu, char *buf);
|
|
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extern void gfs2_quota_out(struct gfs2_quota *qu, char *buf);
|
|
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extern void gfs2_dinode_in(struct gfs2_dinode *di, char *buf);
|
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extern void gfs2_dinode_out(struct gfs2_dinode *di, char *buf);
|
|
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extern void gfs2_dirent_in(struct gfs2_dirent *de, char *buf);
|
|
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extern void gfs2_dirent_out(struct gfs2_dirent *de, char *buf);
|
|
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extern void gfs2_leaf_in(struct gfs2_leaf *lf, char *buf);
|
|
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extern void gfs2_leaf_out(struct gfs2_leaf *lf, char *buf);
|
|
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extern void gfs2_ea_header_in(struct gfs2_ea_header *ea, char *buf);
|
|
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extern void gfs2_log_header_v1_in(struct gfs2_log_header *lh, char *buf);
|
|
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extern void gfs2_log_header_in(struct gfs2_log_header *lh, char *buf);
|
|
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extern void gfs2_log_header_v1_out(struct gfs2_log_header *lh, char *buf);
|
|
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extern void gfs2_log_header_out(struct gfs2_log_header *lh, char *buf);
|
|
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extern void gfs2_log_descriptor_in(struct gfs2_log_descriptor *ld, char *buf);
|
|
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extern void gfs2_log_descriptor_out(struct gfs2_log_descriptor *ld, char *buf);
|
|
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extern void gfs2_statfs_change_in(struct gfs2_statfs_change *sc, char *buf);
|
|
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extern void gfs2_statfs_change_out(struct gfs2_statfs_change *sc, char *buf);
|
|
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extern void gfs2_quota_change_in(struct gfs2_quota_change *qc, char *buf);
|
|
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extern void gfs2_quota_change_out(struct gfs2_quota_change *qc, char *buf);
|
|
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|
|
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/* Printing functions */
|
|
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|
|
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extern void gfs2_inum_print(const struct gfs2_inum *no);
|
|
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extern void gfs2_meta_header_print(const struct gfs2_meta_header *mh);
|
|
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extern void gfs2_sb_print(const struct gfs2_sb *sb);
|
|
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extern void gfs2_rindex_print(const struct gfs2_rindex *ri);
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extern void gfs2_rgrp_print(const struct gfs2_rgrp *rg);
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extern void gfs2_quota_print(const struct gfs2_quota *qu);
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extern void gfs2_dinode_print(const struct gfs2_dinode *di);
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extern void gfs2_leaf_print(const struct gfs2_leaf *lf);
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extern void gfs2_ea_header_print(const struct gfs2_ea_header *ea, char *name);
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extern void gfs2_log_header_v1_print(const struct gfs2_log_header *lh);
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extern void gfs2_log_header_print(const struct gfs2_log_header *lh);
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extern void gfs2_log_descriptor_print(const struct gfs2_log_descriptor *ld);
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extern void gfs2_statfs_change_print(const struct gfs2_statfs_change *sc);
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extern void gfs2_quota_change_print(const struct gfs2_quota_change *qc);
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/* Language functions */
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struct lgfs2_lang_state;
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struct lgfs2_lang_result {
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uint64_t lr_blocknr;
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struct gfs2_buffer_head *lr_bh;
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const struct lgfs2_metadata *lr_mtype;
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int lr_state; // GFS2_BLKST_*
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};
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extern struct lgfs2_lang_state *lgfs2_lang_init(void);
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extern int lgfs2_lang_parsef(struct lgfs2_lang_state *state, FILE *script);
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extern int lgfs2_lang_parses(struct lgfs2_lang_state *state, const char *script);
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extern struct lgfs2_lang_result *lgfs2_lang_result_next(struct lgfs2_lang_state *state, struct gfs2_sbd *sbd);
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extern int lgfs2_lang_result_print(struct lgfs2_lang_result *result);
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extern void lgfs2_lang_result_free(struct lgfs2_lang_result **result);
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extern void lgfs2_lang_free(struct lgfs2_lang_state **state);
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__END_DECLS
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#endif /* __LIBGFS2_DOT_H__ */
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