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TDB_OPEN

TDB_OPEN

Section: Linux Programmer's Manual (3) Updated: Aug 16, 2000
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NAME

tdb_open - Open a tdb database.  

SYNOPSIS

#include <tdb.h>

TDB_CONTEXT *tdb_open(const char *pathname, int hash_size,
        int tdb_flags, int open_flags, mode_t mode );

 

DESCRIPTION

Open the database, creating it if necessary. The hash size is advisory, use zero for a default value. tdb_flags can be one of
TDB_CLEAR_IF_FIRST
Clear database if we are the only one with it open.
TDB_INTERNAL
Don't use a file, instead store the data in memory. The pathname , open_flags , and mode are ignored in this case. This is useful if you need a quick associative array or map.
TDB_NOLOCK
Don't do any locking (this is always turned on for read-only file descriptors)
TDB_NOMMAP
Don't use mmap.
TDB_CONVERT
Create a database in the reverse of native endian: normally when the database is created (or cleared with TDB_CLEAR_IF_FIRST), it is created in native endian order. This flag is set (or unset) automatically for existing databases.

The open_flags and mode are passed straight to the open call on the database file. A flags value of O_WRONLY is invalid.  

RETURN VALUE

On success a pointer to an opaque data structure, a TDB_CONTEXT is returned. On error a NULL is returned.  

AUTHORS

Software: Andrew Tridgell <tridge@linuxcare.com> and Luke Kenneth Casson Leighton Man page: Ben Woodard <ben@valinux.com>  

SEE ALSO

open(2), gdbm(3), tdb(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
AUTHORS
SEE ALSO

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Time: 21:57:06 GMT, April 16, 2011