ING_DB
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Oliver Lehmann
parent
369925f750
commit
455d0943ce
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/* INDEX relation struct */
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/* */
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/* The INDEX relation is used to determine what, if any, */
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/* secondary indicies exist for relations. If a relation */
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/* has a secondary index, there will be one tuple in the */
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/* INDEX relation for each such index. There may be one */
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/* or more domains indexed by one or many INDEX relations */
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/* depending on whether single or combined indicies are */
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/* being used. */
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/* */
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/* Combined indices may use up to six domains to form the */
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/* index. */
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/* */
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/* The simple existance of a secondary index is better */
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/* checked using the "relindxd" field in the RELATION */
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/* relation, since that is more efficient. */
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/* */
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/* The two values SECINDEX and SECBASE are the values for */
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/* the relindxd field of the relation relation. Implicitly */
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/* SECINDEX must be < 0 and SECBASE must be > 0. */
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# define SECINDEX -2 /* this in rel.relindxd indicates */
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/* that the relation is a sec. index */
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# define SECBASE 1 /* this in rel.relindxd indicates */
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/* has a sec. index */
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struct index
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{
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char irelidp[MAXNAME]; /* unique name of primary relation */
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char iownerp[2]; /* owner of primary relation */
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char irelidi[MAXNAME]; /* unique name of index relation */
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char irelspeci; /* relspec of index relation */
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char idom[MAXKEYS]; /* domain number of primary relation */
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/* which corresponds to each index */
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/* attribute. In the index relation */
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/* are stored as: */
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/* idom1, idom2, ..,idom6 */
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};
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/* field numbers for AAam_find() calls */
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# define IRELIDP 1
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# define IOWNERP 2
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# define IRELIDI 3
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/* TREE RELATION STRUCT */
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/* */
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/* The TREE relation stores trees used by query modification and */
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/* for distribution criteria. */
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struct tree
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{
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char treerelid[MAXNAME]; /* relation name */
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char treeowner[2]; /* relation owner */
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short treeid; /* internal name of this tuple */
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short treeseq; /* sequence number in tree */
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char treetype; /* type info for this tree */
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char treexxxx;
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char treetree[100]; /* contents of tree */
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};
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/* field numbers for AAam_find() calls */
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# define TREERELID 1
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# define TREEOWNER 2
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# define TREEID 3
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# define TREESEQ 4
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# define TREETYPE 5
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/* STRUCT PROTECT -- AA_PROTECT catalog */
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/* */
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/* This structure defines the format of the AA_PROTECT catalog. */
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/* One or two things should be noted. First, the 'prodomset' */
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/* field is actually four domains in the physical relation, */
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/* since the best we know about is i4's, and we need an i16. */
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/* Second, both the proopset and the prodomset fields */
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/* are bit maps. */
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/* bit values for proopset */
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# define PRO_RETR 0001 /* retrieve */
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# define PRO_REPL 0002 /* replace */
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# define PRO_DEL 0004 /* delete */
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# define PRO_APP 0010 /* append */
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# define PRO_TEST 0020 /* test in qualification */
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# define PRO_AGGR 0040 /* retrieve aggregate value */
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# ifdef BIT_32
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# define PROTERM 4
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# else
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# define PROTERM 2
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# endif
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struct protect
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{
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char prorelid[MAXNAME]; /* relation to which this applies */
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char prorelown[2]; /* owner */
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short propermid; /* permission sequence number */
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char prouser[2]; /* user code in PERMIT */
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char proterm[PROTERM]; /* terminal id */
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char proresvar; /* result variable number */
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char proopset; /* operation set */
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short protodbgn; /* beginning time of day */
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short protodend; /* ending time of day */
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char prodowbgn; /* beginning day of week */
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char prodowend; /* ending day of week */
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short prodomset[8]; /* domain set permitted */
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short protree; /* link to qualification */
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};
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/* field numbers for AAam_find() calls */
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# define PRORELID 1
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# define PRORELOWN 2
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# define PROPERMID 3
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# define PROTREE 16
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/* STRUCT INTEGRITY -- the descriptor for the integrity relation */
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struct integrity
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{
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char intrelid[MAXNAME]; /* name of the relation */
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char intrelowner[2]; /* owner of the relation */
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# ifdef BIT_32
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short inttree; /* pointer into the tree catalog */
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short intdomset[8]; /* set of domains this applies to */
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# else
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short intdomset[8]; /* set of domains this applies to */
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short inttree; /* pointer into the tree catalog */
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# endif
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char intresvar; /* primary variable number */
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};
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/* field numbers for AAam_find() calls */
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# define INTRELID 1
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# define INTRELOWNER 2
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# ifdef BIT_32
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# define INTTREE 3
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# else
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# define INTTREE 7
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# endif
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/* STRUCT REF -- AA_REF catalog */
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/* */
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/* declares the relations, which are */
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/* bases for views or permits */
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/* */
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struct refs
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{
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char refrelid[MAXNAME];
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char refowner[2];
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char refbrelid[MAXNAME];
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char refbowner[2];
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char reftype;
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};
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/* field numbers for AAam_find() calls */
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/*define REFRELID 1 ** */
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/*define REFOWNER 2 ** */
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/*define REFTYPE 5 ** */
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@ -0,0 +1,58 @@
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/* PIPES.h */
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/* */
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/* Interprocess pipe format and associated manifest constants */
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# define HDRSIZ 8 /* length of pipe header */
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# ifdef MEM_N
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# define PBUFSIZ 120 /* length of pipe buffer */
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# else
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# define PBUFSIZ (BUFSIZ - HDRSIZ)
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# endif
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/* -- PIPE PARAMETERS -- */
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# define NORM_STAT 0 /* HDRSTAT: data block */
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# define LAST_STAT 1 /* HDRSTAT: last block of cmnd */
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/*define ERR_STAT 2 ** HDRSTAT: error block (sync) */
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# define SYNC_STAT 3 /* sync on delete signal */
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struct pipfrmt /* interprocess pipe format: */
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{
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char exec_id; /* target overlay id */
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char func_id; /* command id in target overlay */
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short buf_len; /* # of useful bytes in PBUF */
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/* values 0 to PBUFSIZ. */
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/* rdpipe effectively */
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/* concatenates significant */
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/* parts of blocks. */
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short err_id; /* error status */
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/* 0 - no errors */
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/* non zero, error identifier */
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char hdrstat; /* block status word */
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/* 0 - good block in command */
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/* 1 - last block in command */
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char param_id; /* one byte param available */
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/* to calling pgm */
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char pbuf[PBUFSIZ]; /* pipe data buffer */
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int pbuf_pt; /* next available slot in PBUF */
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};
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/* modes for rdpipe and wrpipe */
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# define P_PRIME 0 /* prime the pipe */
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# define P_NORM 1 /* normal read or write */
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# define P_SYNC 2 /* read for sync */
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# define P_END 2 /* write a sync block */
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# define P_EXECID 3 /* read execid */
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# define P_FUNCID 4 /* read funcid */
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# define P_FLUSH 3 /* write non-sync block */
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# define P_WRITE 4 /* write block, previous type */
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# define P_INT 5 /* synchronize on interrupt */
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# define P_PARAM 6 /* set/get param field */
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/* pipe descriptors */
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extern int R_up; /* Read from process n-1 */
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extern int W_up; /* Write to process n-1 */
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extern int R_down; /* Read from process n+1 */
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extern int W_down; /* Write to process n+1 */
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extern int R_front; /* Read from front end */
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extern int W_front; /* Write to front end */
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