Collaboration diagram for Database API.:

Files
file	rpmdb.h
	Access RPM indices using Berkeley DB interface(s).
file	rpmlib.h
	In Memoriam: Steve Taylor <staylor@redhat.com> was here, now he's not.
Functions
rpmop	rpmdbOp (rpmdb db, rpmdbOpX opx)
	Retrieve operation timestamp from rpm database.
int	rpmdbOpenAll (rpmdb db)
	Open all database indices.
int	rpmdbCountPackages (rpmdb db, const char *name)
	Return number of instances of package in rpm database.
unsigned int	rpmdbGetIteratorOffset (rpmdbMatchIterator mi)
	Return header join key for current position of rpm database iterator.
int	rpmdbGetIteratorCount (rpmdbMatchIterator mi)
	Return number of elements in rpm database iterator.
unsigned int	rpmdbGetIteratorFileNum (rpmdbMatchIterator mi)
int	rpmdbAppendIterator (rpmdbMatchIterator mi, const int *hdrNums, int nHdrNums)
	Append items to set of package instances to iterate.
int	rpmdbSetIteratorRE (rpmdbMatchIterator mi, rpmTagVal tag, rpmMireMode mode, const char *pattern)
	Add pattern to iterator selector.
int	rpmdbSetIteratorRewrite (rpmdbMatchIterator mi, int rewrite)
	Prepare iterator for lazy writes.
int	rpmdbSetIteratorModified (rpmdbMatchIterator mi, int modified)
	Modify iterator to mark header for lazy write on release.
int	rpmdbSetHdrChk (rpmdbMatchIterator mi, rpmts ts, rpmRC(hdrchk)(rpmts ts, const void uh, size_t uc, char **msg))
	Modify iterator to verify retrieved header blobs.
rpmdbMatchIterator	rpmdbInitIterator (rpmdb db, rpmDbiTagVal rpmtag, const void *keyp, size_t keylen)
	Return database iterator.
Header	rpmdbNextIterator (rpmdbMatchIterator mi)
	Return next package header from iteration.
int	rpmdbCheckSignals (void)
	Check for and exit on termination signals.
int	rpmdbCheckTerminate (int terminate)
	Check rpmdb signal handler for trapped signal and/or requested exit, clean up any open iterators and databases on termination condition.
rpmdbMatchIterator	rpmdbFreeIterator (rpmdbMatchIterator mi)
	Destroy rpm database iterator.
rpmdbIndexIterator	rpmdbIndexIteratorInit (rpmdb db, rpmDbiTag rpmtag)
	Get an iterator for an index.
int	rpmdbIndexIteratorNext (rpmdbIndexIterator ii, const void *key, size_t keylen)
	Get the next key - Warning! Keys are not zero terminated! Binary tags may even contain zero bytes.
unsigned int	rpmdbIndexIteratorNumPkgs (rpmdbIndexIterator ii)
	Get number of entries for current key.
unsigned int	rpmdbIndexIteratorPkgOffset (rpmdbIndexIterator ii, unsigned int nr)
	Get package offset of entry.
unsigned int	rpmdbIndexIteratorTagNum (rpmdbIndexIterator ii, unsigned int nr)
	Get tag number of entry.
rpmdbIndexIterator	rpmdbIndexIteratorFree (rpmdbIndexIterator ii)
	Free index iterator.

Function Documentation

int rpmdbAppendIterator	(	rpmdbMatchIterator	mi,
		const int *	hdrNums,
		int	nHdrNums
	)

Append items to set of package instances to iterate.

Parameters:

mi	rpm database iterator
hdrNums	array of package instances
nHdrNums	number of elements in array

Returns:: 0 on success, 1 on failure (bad args)

int rpmdbCheckSignals ( void )

Check for and exit on termination signals.

int rpmdbCheckTerminate ( int terminate )

Check rpmdb signal handler for trapped signal and/or requested exit, clean up any open iterators and databases on termination condition.

On non-zero exit any open references to rpmdb are invalid and cannot be accessed anymore, calling process should terminate immediately.

Parameters:

terminate 0 to only check for signals, 1 to terminate anyway

Returns:: 0 to continue, 1 if termination cleanup was done.

int rpmdbCountPackages	(	rpmdb	db,
		const char *	name
	)

Return number of instances of package in rpm database.

Parameters:

db	rpm database
name	rpm package name

Returns:: number of instances

rpmdbMatchIterator rpmdbFreeIterator ( rpmdbMatchIterator mi )

Destroy rpm database iterator.

Parameters:

mi	rpm database iterator

Returns:: NULL always

int rpmdbGetIteratorCount ( rpmdbMatchIterator mi )

Return number of elements in rpm database iterator.

Parameters:

mi	rpm database iterator

Returns:: number of elements

unsigned int rpmdbGetIteratorFileNum ( rpmdbMatchIterator mi )

unsigned int rpmdbGetIteratorOffset ( rpmdbMatchIterator mi )

Return header join key for current position of rpm database iterator.

Parameters:

mi	rpm database iterator

Returns:: current header join key

rpmdbIndexIterator rpmdbIndexIteratorFree ( rpmdbIndexIterator ii )

Free index iterator.

Parameters:

ii	index iterator return NULL

rpmdbIndexIterator rpmdbIndexIteratorInit	(	rpmdb	db,
		rpmDbiTag	rpmtag
	)

Get an iterator for an index.

Parameters:

db	rpm database
rpmtag	the index to iterate over

Returns:: the index iterator

int rpmdbIndexIteratorNext	(	rpmdbIndexIterator	ii,
		const void **	key,
		size_t *	keylen
	)

Get the next key - Warning! Keys are not zero terminated! Binary tags may even contain zero bytes.

Parameters:

ii	index iterator
key	adress to save the pointer to the key
keylen	adress to save the length of the key to

Returns:: 0 on success; != 0 on error or end of index

unsigned int rpmdbIndexIteratorNumPkgs ( rpmdbIndexIterator ii )

Get number of entries for current key.

Parameters:

ii	index iterator

Returns:: number of entries. 0 on error.

unsigned int rpmdbIndexIteratorPkgOffset	(	rpmdbIndexIterator	ii,
		unsigned int	nr
	)

Get package offset of entry.

Parameters:

ii	index iterator
nr	number of the entry

Returns:: db offset of pkg

unsigned int rpmdbIndexIteratorTagNum	(	rpmdbIndexIterator	ii,
		unsigned int	nr
	)

Get tag number of entry.

Parameters:

ii	index iterator
nr	number of the entry

Returns:: number of tag within the package

rpmdbMatchIterator rpmdbInitIterator	(	rpmdb	db,
		rpmDbiTagVal	rpmtag,
		const void *	keyp,
		size_t	keylen
	)

Return database iterator.

Parameters:

db	rpm database
rpmtag	database index tag
keyp	key data (NULL for sequential access)
keylen	key data length (0 will use strlen(keyp))

Returns:: NULL on failure

Header rpmdbNextIterator ( rpmdbMatchIterator mi )

Return next package header from iteration.

Parameters:

mi	rpm database iterator

Returns:: NULL on end of iteration.

rpmop rpmdbOp	(	rpmdb	db,
		rpmdbOpX	opx
	)

Retrieve operation timestamp from rpm database.

Parameters:

db	rpm database
opx	operation timestamp index

Returns:: pointer to operation timestamp.

int rpmdbOpenAll ( rpmdb db )

Open all database indices.

Parameters:

db	rpm database

Returns:: 0 on success

int rpmdbSetHdrChk	(	rpmdbMatchIterator	mi,
		rpmts	ts,
		rpmRC()(rpmts ts, const void uh, size_t uc, char **msg)	hdrchk
	)

Modify iterator to verify retrieved header blobs.

Parameters:

mi	rpm database iterator
ts	transaction set
(*hdrchk)	headerCheck() vector

Returns:: 0 always

int rpmdbSetIteratorModified	(	rpmdbMatchIterator	mi,
		int	modified
	)

Modify iterator to mark header for lazy write on release.

Parameters:

mi	rpm database iterator
modified	new value of modified

Returns:: previous value

int rpmdbSetIteratorRE	(	rpmdbMatchIterator	mi,
		rpmTagVal	tag,
		rpmMireMode	mode,
		const char *	pattern
	)

Add pattern to iterator selector.

Parameters:

mi	rpm database iterator
tag	rpm tag
mode	type of pattern match
pattern	pattern to match

Returns:: 0 on success

int rpmdbSetIteratorRewrite	(	rpmdbMatchIterator	mi,
		int	rewrite
	)

Prepare iterator for lazy writes.

Note:: Must be called before rpmdbNextIterator() with CDB model database.

Parameters:

mi	rpm database iterator
rewrite	new value of rewrite

Returns:: previous value

Files

Functions

Function Documentation