TDB_CLOSE(3) Linux Programmer's Manual TDB_CLOSE(3)NAME
tdb_close - close a tdb database
SYNOPSIS
#include <tdb.h>
int tdb_close(TDB_CONTEXT *tdb);
DESCRIPTION
Closes a TDB database and frees memory any memory that was used.
RETURN VALUE
Returns zero on success and -1 on failure.
AUTHORS
Software: Andrew Tridgell and Luke Kenneth Casson Leighton Man page: Ben Woodard <ben@valinux.com>
SEE ALSO gdbm(3), tdb(3)Samba Aug 16, 2000 TDB_CLOSE(3)
Check Out this Related Man Page
TDB_FIRSTKEY(3) Linux Programmer's Manual TDB_FIRSTKEY(3)NAME
tdb_firstkey - return the key of the first record in a tdb database tdb_nextkey - return the key of next record in the tdb database
SYNOPSIS
#include <tdb.h>
TDB_DATA tdb_firstkey(TDB_CONTEXT *tdb);
TDB_DATA tdb_nextkey(TDB_CONTEXT *tdb, TDB_DATA prev_key);
DESCRIPTION
tdb_firstkey fetches the key of the first entry in the tdb database. tdb_nextkey fetches the key of the entry immediately after prev_key
in the database.
The TDB_DATA structure returned by both these functions is defined as:
typedef struct {
char *dptr;
size_t dsize;
} TDB_DATA;
The order in which this traverses the database is its own internal hash order. Do not expect the keys to be in any recognizably sorted
order.
These functions are reliable even if other writers are accessing the database (or you are replacing or deleting elements as you traverse),
except in the case of nested tdb_firstkey or tdb_nextkey calls. For example, the following outer traversal may fail to traverse all the
elements, or may even traverse elements twice if other processes are manipulating the database:
TDB_DATA i, j;
for (i = tdb_firstkey(tdb); i.dptr; i = tdb_nextkey(tdb, i)) {
for (j = tdb_firstkey(tdb); j.dptr; j = tdb_nextkey(tdb, j)) {
...
}
}
If such behaviour is desired, use tdb_traverse instead.
RETURN VALUE
If the call succeeds, then a TDB_DATA structure is returned with the dptr structure filled in. If the call fails or you have reached the
end of the database then dptr will be set to NULL.
NOTE: The caller is responsible for freeing the data pointed to by dptr
AUTHORS
Software: Andrew Tridgell <tridge@linuxcare.com> and Luke Kenneth Casson Leighton Man page: Ben Woodard <ben@valinux.com>
SEE ALSO gdbm(3), tdb(3)Samba Aug 16, 2000 TDB_FIRSTKEY(3)
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