source: trunk/third/rpm/db/os_win32/os_stat.c @ 19079

/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1997-2002
 *      Sleepycat Software.  All rights reserved.
 */

#include "db_config.h"

#ifndef lint
static const char revid[] = "Id: os_stat.c,v 11.22 2002/07/12 18:56:56 bostic Exp ";
#endif /* not lint */

#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <sys/stat.h>

#include <string.h>
#endif

#include "db_int.h"

/*
 * __os_exists --
 *      Return if the file exists.
 *
 * PUBLIC: int __os_exists __P((const char *, int *));
 */
int
__os_exists(path, isdirp)
        const char *path;
        int *isdirp;
{
        int ret;
        DWORD attrs;

        if (DB_GLOBAL(j_exists) != NULL)
                return (DB_GLOBAL(j_exists)(path, isdirp));

        ret = 0;
        do {
                attrs = GetFileAttributes(path);
                if (attrs == (DWORD)-1)
                        ret = __os_win32_errno();
        } while (ret == EINTR);

        if (ret != 0)
                return (ret);

        if (isdirp != NULL)
                *isdirp = (attrs & FILE_ATTRIBUTE_DIRECTORY);

        return (0);
}

/*
 * __os_ioinfo --
 *      Return file size and I/O size; abstracted to make it easier
 *      to replace.
 *
 * PUBLIC: int __os_ioinfo __P((DB_ENV *, const char *,
 * PUBLIC:    DB_FH *, u_int32_t *, u_int32_t *, u_int32_t *));
 */
int
__os_ioinfo(dbenv, path, fhp, mbytesp, bytesp, iosizep)
        DB_ENV *dbenv;
        const char *path;
        DB_FH *fhp;
        u_int32_t *mbytesp, *bytesp, *iosizep;
{
        int ret;
        BY_HANDLE_FILE_INFORMATION bhfi;
        unsigned __int64 filesize;

        if (DB_GLOBAL(j_ioinfo) != NULL)
                return (DB_GLOBAL(j_ioinfo)(path,
                    fhp->fd, mbytesp, bytesp, iosizep));

retry:  if (!GetFileInformationByHandle(fhp->handle, &bhfi)) {
                if ((ret = __os_win32_errno()) == EINTR)
                        goto retry;
                __db_err(dbenv,
                    "GetFileInformationByHandle: %s", strerror(ret));
                return (ret);
        }

        filesize = ((unsigned __int64)bhfi.nFileSizeHigh << 32) +
            bhfi.nFileSizeLow;

        /* Return the size of the file. */
        if (mbytesp != NULL)
                *mbytesp = (u_int32_t)(filesize / MEGABYTE);
        if (bytesp != NULL)
                *bytesp = (u_int32_t)(filesize % MEGABYTE);

        /* The filesystem blocksize is not easily available. */
        if (iosizep != NULL)
                *iosizep = DB_DEF_IOSIZE;
        return (0);
}