154 lines
4.0 KiB
C
154 lines
4.0 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1997
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* Sleepycat Software. All rights reserved.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)os_func.c 10.4 (Sleepycat) 10/28/97";
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#endif /* not lint */
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#include <errno.h>
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#endif
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#include "db_int.h"
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/*
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* XXX
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* We provide our own extern declarations so that we don't collide with
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* systems that get them wrong, e.g., SunOS.
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*/
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#ifdef _WIN32
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#define fsync _commit
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#define imported __declspec(dllimport)
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#else
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#define imported
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#endif
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imported extern void *calloc __P((size_t, size_t));
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imported extern int close __P((int));
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imported extern void free __P((void *));
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imported extern int fsync __P((int));
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imported extern void *malloc __P((size_t));
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imported extern int open __P((const char *, int, ...));
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imported extern ssize_t read __P((int, void *, size_t));
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imported extern char *strdup __P((const char *));
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imported extern void *realloc __P((void *, size_t));
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imported extern int unlink __P((const char *));
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imported extern ssize_t write __P((int, const void *, size_t));
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/*
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* __db_jump --
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* This list of interfaces that applications can replace. In some
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* cases, the user is permitted to replace the standard ANSI C or
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* POSIX 1003.1 call, e.g., calloc or read. In others, we provide
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* a local interface to the functionality, e.g., __os_map.
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*/
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struct __db_jumptab __db_jump = {
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calloc, /* DB_FUNC_CALLOC */
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close, /* DB_FUNC_CLOSE */
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__os_dirfree, /* DB_FUNC_DIRFREE */
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__os_dirlist, /* DB_FUNC_DIRLIST */
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__os_exists, /* DB_FUNC_EXISTS */
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free, /* DB_FUNC_FREE */
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fsync, /* DB_FUNC_FSYNC */
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__os_ioinfo, /* DB_FUNC_IOINFO */
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malloc, /* DB_FUNC_MALLOC */
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__os_map, /* DB_FUNC_MAP */
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open, /* DB_FUNC_OPEN */
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read, /* DB_FUNC_READ */
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realloc, /* DB_FUNC_REALLOC */
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__os_seek, /* DB_FUNC_SEEK */
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__os_sleep, /* DB_FUNC_SLEEP */
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strdup, /* DB_FUNC_STRDUP */
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unlink, /* DB_FUNC_UNLINK */
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__os_unmap, /* DB_FUNC_UNMAP */
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write, /* DB_FUNC_WRITE */
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NULL /* DB_FUNC_YIELD */
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};
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/*
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* db_jump_set --
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* Replace an interface.
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*/
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int
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db_jump_set(func, which)
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void *func;
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int which;
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{
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switch (which) {
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case DB_FUNC_CALLOC:
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__db_calloc = (void *(*) __P((size_t, size_t)))func;
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break;
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case DB_FUNC_CLOSE:
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__os_close = (int (*) __P((int)))func;
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break;
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case DB_FUNC_DIRFREE:
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__db_dirfree = (void (*) __P((char **, int)))func;
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break;
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case DB_FUNC_DIRLIST:
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__db_dirlist =
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(int (*) __P((const char *, char ***, int *)))func;
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break;
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case DB_FUNC_EXISTS:
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__db_exists = (int (*) __P((const char *, int *)))func;
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break;
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case DB_FUNC_FREE:
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__db_free = (void (*) __P((void *)))func;
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break;
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case DB_FUNC_FSYNC:
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__os_fsync = (int (*) __P((int)))func;
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break;
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case DB_FUNC_IOINFO:
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__db_ioinfo =
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(int (*) __P((const char *, int, off_t *, off_t *)))func;
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break;
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case DB_FUNC_MALLOC:
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__db_malloc = (void *(*) __P((size_t)))func;
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break;
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case DB_FUNC_MAP:
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__db_map = (int (*) __P((int, size_t, int, int, void **)))func;
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break;
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case DB_FUNC_OPEN:
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__os_open = (int (*) __P((const char *, int, ...)))func;
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break;
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case DB_FUNC_READ:
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__os_read = (ssize_t (*) __P((int, void *, size_t)))func;
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break;
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case DB_FUNC_REALLOC:
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__db_realloc = (void *(*) __P((void *, size_t)))func;
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break;
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case DB_FUNC_SEEK:
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__db_seek =
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(int (*) __P((int, size_t, db_pgno_t, u_long, int)))func;
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break;
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case DB_FUNC_SLEEP:
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__db_sleep = (int (*) __P((u_long, u_long)))func;
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break;
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case DB_FUNC_STRDUP:
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__db_strdup = (char *(*) __P((const char *)))func;
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break;
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case DB_FUNC_UNLINK:
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__os_unlink = (int (*) __P((const char *)))func;
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break;
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case DB_FUNC_UNMAP:
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__db_unmap = (int (*) __P((void *, size_t)))func;
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break;
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case DB_FUNC_WRITE:
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__os_write = (ssize_t (*) __P((int, const void *, size_t)))func;
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break;
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case DB_FUNC_YIELD:
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__db_yield = (int (*) __P((void)))func;
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break;
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default:
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return (EINVAL);
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}
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return (0);
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}
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