diff options
Diffstat (limited to 'bdb/os/os_finit.c')
-rw-r--r-- | bdb/os/os_finit.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/bdb/os/os_finit.c b/bdb/os/os_finit.c deleted file mode 100644 index 23b606ecb2c..00000000000 --- a/bdb/os/os_finit.c +++ /dev/null @@ -1,111 +0,0 @@ -/*- - * See the file LICENSE for redistribution information. - * - * Copyright (c) 1998, 1999, 2000 - * Sleepycat Software. All rights reserved. - */ - -#include "db_config.h" - -#ifndef lint -static const char revid[] = "$Id: os_finit.c,v 11.8 2000/11/30 00:58:42 ubell Exp $"; -#endif /* not lint */ - -#ifndef NO_SYSTEM_INCLUDES -#include <sys/types.h> - -#include <string.h> -#endif - -#include "db_int.h" - -/* - * __os_finit -- - * Initialize a regular file, optionally zero-filling it as well. - * - * PUBLIC: int __os_finit __P((DB_ENV *, DB_FH *, size_t, int)); - */ -int -__os_finit(dbenv, fhp, size, zerofill) - DB_ENV *dbenv; - DB_FH *fhp; - size_t size; - int zerofill; -{ - db_pgno_t pages; - size_t i; - size_t nw; - u_int32_t relative; - int ret; - char buf[OS_VMPAGESIZE]; - - /* Write nuls to the new bytes. */ - memset(buf, 0, sizeof(buf)); - - /* - * Extend the region by writing the last page. If the region is >4Gb, - * increment may be larger than the maximum possible seek "relative" - * argument, as it's an unsigned 32-bit value. Break the offset into - * pages of 1MB each so that we don't overflow (2^20 + 2^32 is bigger - * than any memory I expect to see for awhile). - */ - if ((ret = __os_seek(dbenv, fhp, 0, 0, 0, 0, DB_OS_SEEK_END)) != 0) - return (ret); - pages = (size - OS_VMPAGESIZE) / MEGABYTE; - relative = (size - OS_VMPAGESIZE) % MEGABYTE; - if ((ret = __os_seek(dbenv, - fhp, MEGABYTE, pages, relative, 0, DB_OS_SEEK_CUR)) != 0) - return (ret); - if ((ret = __os_write(dbenv, fhp, buf, sizeof(buf), &nw)) != 0) - return (ret); - if (nw != sizeof(buf)) - return (EIO); - - /* - * We may want to guarantee that there is enough disk space for the - * file, so we also write a byte to each page. We write the byte - * because reading it is insufficient on systems smart enough not to - * instantiate disk pages to satisfy a read (e.g., Solaris). - */ - if (zerofill) { - pages = size / MEGABYTE; - relative = size % MEGABYTE; - if ((ret = __os_seek(dbenv, fhp, - MEGABYTE, pages, relative, 1, DB_OS_SEEK_END)) != 0) - return (ret); - - /* Write a byte to each page. */ - for (i = 0; i < size; i += OS_VMPAGESIZE) { - if ((ret = __os_write(dbenv, fhp, buf, 1, &nw)) != 0) - return (ret); - if (nw != 1) - return (EIO); - if ((ret = __os_seek(dbenv, fhp, - 0, 0, OS_VMPAGESIZE - 1, 0, DB_OS_SEEK_CUR)) != 0) - return (ret); - } - } - return (0); -} - -/* - * __os_fpinit -- - * Initialize a page in a regular file. - * - * PUBLIC: int __os_fpinit __P((DB_ENV *, DB_FH *, db_pgno_t, int, int)); - */ -int -__os_fpinit(dbenv, fhp, pgno, pagecount, pagesize) - DB_ENV *dbenv; - DB_FH *fhp; - db_pgno_t pgno; - int pagecount, pagesize; -{ - COMPQUIET(dbenv, NULL); - COMPQUIET(fhp, NULL); - COMPQUIET(pgno, 0); - COMPQUIET(pagecount, 0); - COMPQUIET(pagesize, 0); - - return (0); -} |