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author | Zhang Qiang <qiang.z.zhang@intel.com> | 2012-05-29 12:22:00 +0800 |
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committer | Zhang Qiang <qiang.z.zhang@intel.com> | 2012-05-29 12:22:00 +0800 |
commit | 02f0634ac29e19c68279e5544cac963e7f1203b8 (patch) | |
tree | b983472f94ef063cedf866d8ecfb55939171779d /db_dump185/db_dump185.c | |
parent | e776056ea09ba0b6d9505ced6913c9190a12d632 (diff) | |
download | db4-master.tar.gz db4-master.tar.bz2 db4-master.zip |
Diffstat (limited to 'db_dump185/db_dump185.c')
-rw-r--r-- | db_dump185/db_dump185.c | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/db_dump185/db_dump185.c b/db_dump185/db_dump185.c new file mode 100644 index 0000000..0e71b70 --- /dev/null +++ b/db_dump185/db_dump185.c @@ -0,0 +1,358 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1996-2009 Oracle. All rights reserved. + * + * $Id$ + */ + +#ifndef lint +static const char copyright[] = + "Copyright (c) 1996-2009 Oracle. All rights reserved.\n"; +#endif + +#include <sys/types.h> + +#include <ctype.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#ifdef HAVE_DB_185_H +#include <db_185.h> +#else +#include <db.h> +#endif + +/* Hash Table Information */ +typedef struct hashhdr185 { /* Disk resident portion */ + int magic; /* Magic NO for hash tables */ + int version; /* Version ID */ + u_int32_t lorder; /* Byte Order */ + int bsize; /* Bucket/Page Size */ + int bshift; /* Bucket shift */ + int dsize; /* Directory Size */ + int ssize; /* Segment Size */ + int sshift; /* Segment shift */ + int ovfl_point; /* Where overflow pages are being + * allocated */ + int last_freed; /* Last overflow page freed */ + int max_bucket; /* ID of Maximum bucket in use */ + int high_mask; /* Mask to modulo into entire table */ + int low_mask; /* Mask to modulo into lower half of + * table */ + int ffactor; /* Fill factor */ + int nkeys; /* Number of keys in hash table */ +} HASHHDR185; +typedef struct htab185 { /* Memory resident data structure */ + HASHHDR185 hdr; /* Header */ +} HTAB185; + +/* Hash Table Information */ +typedef struct hashhdr186 { /* Disk resident portion */ + int32_t magic; /* Magic NO for hash tables */ + int32_t version; /* Version ID */ + int32_t lorder; /* Byte Order */ + int32_t bsize; /* Bucket/Page Size */ + int32_t bshift; /* Bucket shift */ + int32_t ovfl_point; /* Where overflow pages are being allocated */ + int32_t last_freed; /* Last overflow page freed */ + int32_t max_bucket; /* ID of Maximum bucket in use */ + int32_t high_mask; /* Mask to modulo into entire table */ + int32_t low_mask; /* Mask to modulo into lower half of table */ + int32_t ffactor; /* Fill factor */ + int32_t nkeys; /* Number of keys in hash table */ + int32_t hdrpages; /* Size of table header */ + int32_t h_charkey; /* value of hash(CHARKEY) */ +#define NCACHED 32 /* number of bit maps and spare points */ + int32_t spares[NCACHED];/* spare pages for overflow */ + /* address of overflow page bitmaps */ + u_int16_t bitmaps[NCACHED]; +} HASHHDR186; +typedef struct htab186 { /* Memory resident data structure */ + void *unused[2]; + HASHHDR186 hdr; /* Header */ +} HTAB186; + +typedef struct _epgno { + u_int32_t pgno; /* the page number */ + u_int16_t index; /* the index on the page */ +} EPGNO; + +typedef struct _epg { + void *page; /* the (pinned) page */ + u_int16_t index; /* the index on the page */ +} EPG; + +typedef struct _cursor { + EPGNO pg; /* B: Saved tree reference. */ + DBT key; /* B: Saved key, or key.data == NULL. */ + u_int32_t rcursor; /* R: recno cursor (1-based) */ + +#define CURS_ACQUIRE 0x01 /* B: Cursor needs to be reacquired. */ +#define CURS_AFTER 0x02 /* B: Unreturned cursor after key. */ +#define CURS_BEFORE 0x04 /* B: Unreturned cursor before key. */ +#define CURS_INIT 0x08 /* RB: Cursor initialized. */ + u_int8_t flags; +} CURSOR; + +/* The in-memory btree/recno data structure. */ +typedef struct _btree { + void *bt_mp; /* memory pool cookie */ + + void *bt_dbp; /* pointer to enclosing DB */ + + EPG bt_cur; /* current (pinned) page */ + void *bt_pinned; /* page pinned across calls */ + + CURSOR bt_cursor; /* cursor */ + + EPGNO bt_stack[50]; /* stack of parent pages */ + EPGNO *bt_sp; /* current stack pointer */ + + DBT bt_rkey; /* returned key */ + DBT bt_rdata; /* returned data */ + + int bt_fd; /* tree file descriptor */ + + u_int32_t bt_free; /* next free page */ + u_int32_t bt_psize; /* page size */ + u_int16_t bt_ovflsize; /* cut-off for key/data overflow */ + int bt_lorder; /* byte order */ + /* sorted order */ + enum { NOT, BACK, FORWARD } bt_order; + EPGNO bt_last; /* last insert */ + + /* B: key comparison function */ + int (*bt_cmp) __P((DBT *, DBT *)); + /* B: prefix comparison function */ + size_t (*bt_pfx) __P((DBT *, DBT *)); + /* R: recno input function */ + int (*bt_irec) __P((struct _btree *, u_int32_t)); + + FILE *bt_rfp; /* R: record FILE pointer */ + int bt_rfd; /* R: record file descriptor */ + + void *bt_cmap; /* R: current point in mapped space */ + void *bt_smap; /* R: start of mapped space */ + void *bt_emap; /* R: end of mapped space */ + size_t bt_msize; /* R: size of mapped region. */ + + u_int32_t bt_nrecs; /* R: number of records */ + size_t bt_reclen; /* R: fixed record length */ + u_char bt_bval; /* R: delimiting byte/pad character */ + +/* + * NB: + * B_NODUPS and R_RECNO are stored on disk, and may not be changed. + */ +#define B_INMEM 0x00001 /* in-memory tree */ +#define B_METADIRTY 0x00002 /* need to write metadata */ +#define B_MODIFIED 0x00004 /* tree modified */ +#define B_NEEDSWAP 0x00008 /* if byte order requires swapping */ +#define B_RDONLY 0x00010 /* read-only tree */ + +#define B_NODUPS 0x00020 /* no duplicate keys permitted */ +#define R_RECNO 0x00080 /* record oriented tree */ + +#define R_CLOSEFP 0x00040 /* opened a file pointer */ +#define R_EOF 0x00100 /* end of input file reached. */ +#define R_FIXLEN 0x00200 /* fixed length records */ +#define R_MEMMAPPED 0x00400 /* memory mapped file. */ +#define R_INMEM 0x00800 /* in-memory file */ +#define R_MODIFIED 0x01000 /* modified file */ +#define R_RDONLY 0x02000 /* read-only file */ + +#define B_DB_LOCK 0x04000 /* DB_LOCK specified. */ +#define B_DB_SHMEM 0x08000 /* DB_SHMEM specified. */ +#define B_DB_TXN 0x10000 /* DB_TXN specified. */ + u_int32_t flags; +} BTREE; + +void db_btree __P((DB *, int)); +void db_hash __P((DB *, int)); +void dbt_dump __P((DBT *)); +void dbt_print __P((DBT *)); +int main __P((int, char *[])); +int usage __P((void)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + extern char *optarg; + extern int optind; + DB *dbp; + DBT key, data; + int ch, pflag, rval; + + pflag = 0; + while ((ch = getopt(argc, argv, "f:p")) != EOF) + switch (ch) { + case 'f': + if (freopen(optarg, "w", stdout) == NULL) { + fprintf(stderr, "db_dump185: %s: %s\n", + optarg, strerror(errno)); + return (EXIT_FAILURE); + } + break; + case 'p': + pflag = 1; + break; + case '?': + default: + return (usage()); + } + argc -= optind; + argv += optind; + + if (argc != 1) + return (usage()); + + if ((dbp = dbopen(argv[0], O_RDONLY, 0, DB_BTREE, NULL)) == NULL) { + if ((dbp = + dbopen(argv[0], O_RDONLY, 0, DB_HASH, NULL)) == NULL) { + fprintf(stderr, + "db_dump185: %s: %s\n", argv[0], strerror(errno)); + return (EXIT_FAILURE); + } + db_hash(dbp, pflag); + } else + db_btree(dbp, pflag); + + /* + * !!! + * DB 1.85 DBTs are a subset of DB 2.0 DBTs, so we just use the + * new dump/print routines. + */ + if (pflag) + while (!(rval = dbp->seq(dbp, &key, &data, R_NEXT))) { + dbt_print(&key); + dbt_print(&data); + } + else + while (!(rval = dbp->seq(dbp, &key, &data, R_NEXT))) { + dbt_dump(&key); + dbt_dump(&data); + } + + if (rval == -1) { + fprintf(stderr, "db_dump185: seq: %s\n", strerror(errno)); + return (EXIT_FAILURE); + } + return (EXIT_SUCCESS); +} + +/* + * db_hash -- + * Dump out hash header information. + */ +void +db_hash(dbp, pflag) + DB *dbp; + int pflag; +{ + HTAB185 *hash185p; + HTAB186 *hash186p; + + printf("format=%s\n", pflag ? "print" : "bytevalue"); + printf("type=hash\n"); + + /* DB 1.85 was version 2, DB 1.86 was version 3. */ + hash185p = dbp->internal; + if (hash185p->hdr.version > 2) { + hash186p = dbp->internal; + printf("h_ffactor=%lu\n", (u_long)hash186p->hdr.ffactor); + if (hash186p->hdr.lorder != 0) + printf("db_lorder=%lu\n", (u_long)hash186p->hdr.lorder); + printf("db_pagesize=%lu\n", (u_long)hash186p->hdr.bsize); + } else { + printf("h_ffactor=%lu\n", (u_long)hash185p->hdr.ffactor); + if (hash185p->hdr.lorder != 0) + printf("db_lorder=%lu\n", (u_long)hash185p->hdr.lorder); + printf("db_pagesize=%lu\n", (u_long)hash185p->hdr.bsize); + } + printf("HEADER=END\n"); +} + +/* + * db_btree -- + * Dump out btree header information. + */ +void +db_btree(dbp, pflag) + DB *dbp; + int pflag; +{ + BTREE *btp; + + btp = dbp->internal; + + printf("format=%s\n", pflag ? "print" : "bytevalue"); + printf("type=btree\n"); +#ifdef NOT_AVAILABLE_IN_185 + printf("bt_minkey=%lu\n", (u_long)XXX); + printf("bt_maxkey=%lu\n", (u_long)XXX); +#endif + if (btp->bt_lorder != 0) + printf("db_lorder=%lu\n", (u_long)btp->bt_lorder); + printf("db_pagesize=%lu\n", (u_long)btp->bt_psize); + if (!(btp->flags & B_NODUPS)) + printf("duplicates=1\n"); + printf("HEADER=END\n"); +} + +static char hex[] = "0123456789abcdef"; + +/* + * dbt_dump -- + * Write out a key or data item using byte values. + */ +void +dbt_dump(dbtp) + DBT *dbtp; +{ + size_t len; + u_int8_t *p; + + for (len = dbtp->size, p = dbtp->data; len--; ++p) + (void)printf("%c%c", + hex[(*p & 0xf0) >> 4], hex[*p & 0x0f]); + printf("\n"); +} + +/* + * dbt_print -- + * Write out a key or data item using printable characters. + */ +void +dbt_print(dbtp) + DBT *dbtp; +{ + size_t len; + u_int8_t *p; + + for (len = dbtp->size, p = dbtp->data; len--; ++p) + if (isprint((int)*p)) { + if (*p == '\\') + (void)printf("\\"); + (void)printf("%c", *p); + } else + (void)printf("\\%c%c", + hex[(*p & 0xf0) >> 4], hex[*p & 0x0f]); + printf("\n"); +} + +/* + * usage -- + * Display the usage message. + */ +int +usage() +{ + (void)fprintf(stderr, "usage: db_dump185 [-p] [-f file] db_file\n"); + return (EXIT_FAILURE); +} |