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-rw-r--r--storage/bdb/os/os_fid.c135
1 files changed, 0 insertions, 135 deletions
diff --git a/storage/bdb/os/os_fid.c b/storage/bdb/os/os_fid.c
deleted file mode 100644
index 9d5633a43d7..00000000000
--- a/storage/bdb/os/os_fid.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1996-2005
- * Sleepycat Software. All rights reserved.
- *
- * $Id: os_fid.c,v 12.4 2005/10/14 15:33:08 bostic Exp $
- */
-
-#include "db_config.h"
-
-#ifndef NO_SYSTEM_INCLUDES
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <stdlib.h>
-#include <string.h>
-#endif
-
-#include "db_int.h"
-
-/*
- * __os_fileid --
- * Return a unique identifier for a file. The structure
- * of a fileid is: ino(4) dev(4) time(4) pid(4) extra(4).
- * For real files, which have a backing inode and device, the first
- * 16 bytes are filled in and the extra bytes are left 0. For
- * temporary files, the inode and device fields are left blank and
- * the extra four bytes are filled in with a random value.
- *
- * PUBLIC: int __os_fileid __P((DB_ENV *, const char *, int, u_int8_t *));
- */
-int
-__os_fileid(dbenv, fname, unique_okay, fidp)
- DB_ENV *dbenv;
- const char *fname;
- int unique_okay;
- u_int8_t *fidp;
-{
- pid_t pid;
- db_threadid_t tid;
- struct stat sb;
- size_t i;
- int ret;
- u_int32_t tmp;
- u_int8_t *p;
-
- /* Clear the buffer. */
- memset(fidp, 0, DB_FILE_ID_LEN);
-
- /* On POSIX/UNIX, use a dev/inode pair. */
-#ifdef HAVE_VXWORKS
- RETRY_CHK((stat((char *)fname, &sb)), ret);
-#else
- RETRY_CHK((stat(fname, &sb)), ret);
-#endif
- if (ret != 0) {
- __db_err(dbenv, "%s: %s", fname, strerror(ret));
- return (ret);
- }
-
- /*
- * !!!
- * Nothing is ever big enough -- on Sparc V9, st_ino, st_dev and the
- * time_t types are all 8 bytes. As DB_FILE_ID_LEN is only 20 bytes,
- * we convert to a (potentially) smaller fixed-size type and use it.
- *
- * We don't worry about byte sexing or the actual variable sizes.
- *
- * When this routine is called from the DB access methods, it's only
- * called once -- whatever ID is generated when a database is created
- * is stored in the database file's metadata, and that is what is
- * saved in the mpool region's information to uniquely identify the
- * file.
- *
- * When called from the mpool layer this routine will be called each
- * time a new thread of control wants to share the file, which makes
- * things tougher. As far as byte sexing goes, since the mpool region
- * lives on a single host, there's no issue of that -- the entire
- * region is byte sex dependent. As far as variable sizes go, we make
- * the simplifying assumption that 32-bit and 64-bit processes will
- * get the same 32-bit values if we truncate any returned 64-bit value
- * to a 32-bit value. When we're called from the mpool layer, though,
- * we need to be careful not to include anything that isn't
- * reproducible for a given file, such as the timestamp or serial
- * number.
- */
- tmp = (u_int32_t)sb.st_ino;
- for (p = (u_int8_t *)&tmp, i = sizeof(u_int32_t); i > 0; --i)
- *fidp++ = *p++;
-
- tmp = (u_int32_t)sb.st_dev;
- for (p = (u_int8_t *)&tmp, i = sizeof(u_int32_t); i > 0; --i)
- *fidp++ = *p++;
-
- if (unique_okay) {
- static u_int32_t fid_serial = 0;
-
- /* Add in 32-bits of (hopefully) unique number. */
- __os_unique_id(dbenv, &tmp);
- for (p = (u_int8_t *)&tmp, i = sizeof(u_int32_t); i > 0; --i)
- *fidp++ = *p++;
-
- /*
- * Initialize/increment the serial number we use to help
- * avoid fileid collisions. Note we don't bother with
- * locking; it's unpleasant to do from down in here, and
- * if we race on this no real harm will be done, since the
- * finished fileid has so many other components.
- *
- * We use the bottom 32-bits of the process ID, hoping they
- * are more random than the top 32-bits (should we be on a
- * machine with 64-bit process IDs).
- *
- * We increment by 100000 on each call as a simple way of
- * randomizing; simply incrementing seems potentially less
- * useful if pids are also simply incremented, since this
- * is process-local and we may be one of a set of processes
- * starting up. 100000 pushes us out of pid space on most
- * 32-bit platforms, and has few interesting properties in
- * base 2.
- */
- if (fid_serial == 0) {
- dbenv->thread_id(dbenv, &pid, &tid);
- fid_serial = (u_int32_t)pid;
- } else
- fid_serial += 100000;
-
- for (p =
- (u_int8_t *)&fid_serial, i = sizeof(u_int32_t); i > 0; --i)
- *fidp++ = *p++;
- }
-
- return (0);
-}