[Ocfs2-tools-commits] mfasheh commits r280 -
branches/dlm-changes/extras
svn-commits at oss.oracle.com
svn-commits at oss.oracle.com
Wed Sep 29 14:00:01 CDT 2004
Author: mfasheh
Date: 2004-09-29 13:59:59 -0500 (Wed, 29 Sep 2004)
New Revision: 280
Added:
branches/dlm-changes/extras/set_random_bits.c
Modified:
branches/dlm-changes/extras/Makefile
Log:
* add another nice utility to our extras directory.
Modified: branches/dlm-changes/extras/Makefile
===================================================================
--- branches/dlm-changes/extras/Makefile 2004-09-29 18:11:14 UTC (rev 279)
+++ branches/dlm-changes/extras/Makefile 2004-09-29 18:59:59 UTC (rev 280)
@@ -11,7 +11,7 @@
CFLAGS = $(OPTS) -fno-strict-aliasing $(WARNINGS)
-UNINST_PROGRAMS = find_hardlinks find_dup_extents find_inode_paths
+UNINST_PROGRAMS = find_hardlinks find_dup_extents find_inode_paths set_random_bits
INCLUDES = -I../libocfs2/include
@@ -33,12 +33,14 @@
FIND_HARDLINKS_CFILES = find_hardlinks.c
FIND_DUP_EXTENTS_CFILES = find_dup_extents.c
FIND_INODE_PATHS_CFILES = find_inode_paths.c
+SET_RANDOM_BITS_CFILES = set_random_bits.c
-DIST_FILES = $(FIND_HARDLINKS_CFILES) $(FIND_DUP_EXTENTS_CFILES) $(FIND_INODE_PATHS_CFILES)
+DIST_FILES = $(FIND_HARDLINKS_CFILES) $(FIND_DUP_EXTENTS_CFILES) $(FIND_INODE_PATHS_CFILES) $(SET_RANDOM_BITS_CFILES)
+
FIND_HARDLINKS_OBJS = $(subst .c,.o,$(FIND_HARDLINKS_CFILES))
FIND_DUP_EXTENTS_OBJS = $(subst .c,.o,$(FIND_DUP_EXTENTS_CFILES))
FIND_INODE_PATHS_OBJS = $(subst .c,.o,$(FIND_INODE_PATHS_CFILES))
-
+SET_RANDOM_BITS_OBJS = $(subst .c,.o,$(SET_RANDOM_BITS_CFILES))
LIBOCFS2 = ../libocfs2/libocfs2.a
LIBS = $(LIBOCFS2) $(COM_ERR_LIBS)
@@ -51,4 +53,7 @@
find_inode_paths: $(FIND_INODE_PATHS_OBJS) $(LIBS)
$(LINK)
+set_random_bits: $(SET_RANDOM_BITS_OBJS) $(LIBS)
+ $(LINK)
+
include $(TOPDIR)/Postamble.make
Added: branches/dlm-changes/extras/set_random_bits.c
===================================================================
--- branches/dlm-changes/extras/set_random_bits.c 2004-09-29 18:11:14 UTC (rev 279)
+++ branches/dlm-changes/extras/set_random_bits.c 2004-09-29 18:59:59 UTC (rev 280)
@@ -0,0 +1,225 @@
+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * set_random_bits.c
+ *
+ * Set a (not-so-random) pattern of alternating set bits on the global
+ * bitmap (or any file you give me the block offset of). Note that
+ * this will not clear any bits that have already been set.
+ *
+ * Copyright (C) 2004 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License, version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ *
+ * Authors: Mark Fasheh
+ */
+
+#define _XOPEN_SOURCE 600 /* Triggers XOPEN2K in features.h */
+#define _LARGEFILE64_SOURCE
+
+#include <stdlib.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <string.h>
+#include <stdint.h>
+#include "ocfs2.h"
+
+static uint64_t read_number(const char *num)
+{
+ uint64_t val;
+ char *ptr;
+
+ val = strtoull(num, &ptr, 0);
+ if (!ptr || *ptr)
+ return 0;
+
+ return val;
+}
+
+static void print_usage(void)
+{
+ fprintf(stderr,
+ "Usage: set_random_bits -i <inode_blkno> <filename>\n");
+}
+
+struct walk_block {
+ ocfs2_dinode *di;
+ char *buf;
+ uint32_t used;
+};
+
+#define BITCOUNT(x) (((BX_(x)+(BX_(x)>>4)) & 0x0F0F0F0F) % 255)
+#define BX_(x) ((x) - (((x)>>1)&0x77777777) \
+ - (((x)>>2)&0x33333333) \
+ - (((x)>>3)&0x11111111))
+
+static int walk_blocks_func(ocfs2_filesys *fs,
+ uint64_t blkno,
+ uint64_t bcount,
+ void *priv_data)
+{
+ struct walk_block *wb = priv_data;
+ errcode_t ret;
+ int i;
+ uint32_t *up;
+
+ ret = io_read_block(fs->fs_io, blkno, 1, wb->buf);
+ if (ret) {
+ com_err("walk_blocks_func", ret,
+ "while reading block %"PRIu64, blkno);
+ return OCFS2_BLOCK_ABORT;
+ }
+
+ /* set every other bit */
+ up = (uint32_t *) wb->buf;
+ for(i = 0; i < (fs->fs_blocksize / sizeof(uint32_t)); i++) {
+ up[i] |= 0x55555555;
+ wb->used += BITCOUNT(up[i]);
+ }
+
+ ret = io_write_block(fs->fs_io, blkno, 1, wb->buf);
+ if (ret) {
+ com_err("walk_blocks_func", ret,
+ "while writing block %"PRIu64, blkno);
+ return OCFS2_BLOCK_ABORT;
+ }
+ return 0;
+}
+
+extern int opterr, optind;
+extern char *optarg;
+
+int main(int argc, char *argv[])
+{
+ errcode_t ret;
+ uint64_t blkno, sys_blkno;
+ int c;
+ char *filename, *buf;
+ const char *bitmap_name =
+ ocfs2_system_inode_names[GLOBAL_BITMAP_SYSTEM_INODE];
+ ocfs2_filesys *fs;
+ ocfs2_dinode *di;
+ struct walk_block wb;
+
+ blkno = OCFS2_SUPER_BLOCK_BLKNO;
+
+ initialize_ocfs_error_table();
+
+ while ((c = getopt(argc, argv, "i:")) != EOF) {
+ switch (c) {
+ case 'i':
+ blkno = read_number(optarg);
+ if (blkno <= OCFS2_SUPER_BLOCK_BLKNO) {
+ fprintf(stderr,
+ "Invalid inode block: %s\n",
+ optarg);
+ print_usage();
+ return 1;
+ }
+ break;
+
+ default:
+ print_usage();
+ return 1;
+ break;
+ }
+ }
+
+ if (optind >= argc) {
+ fprintf(stderr, "Missing filename\n");
+ print_usage();
+ return 1;
+ }
+ filename = argv[optind];
+
+ ret = ocfs2_open(filename, OCFS2_FLAG_RW, 0, 0, &fs);
+ if (ret) {
+ com_err(argv[0], ret,
+ "while opening file \"%s\"", filename);
+ goto out;
+ }
+
+ if (blkno == OCFS2_SUPER_BLOCK_BLKNO) {
+ sys_blkno = OCFS2_RAW_SB(fs->fs_super)->s_system_dir_blkno;
+
+ ret = ocfs2_lookup(fs, sys_blkno, bitmap_name,
+ strlen(bitmap_name), NULL, &blkno);
+ if (ret) {
+ com_err(argv[0], ret,
+ "while looking up \"%s\"", bitmap_name);
+ goto out;
+ }
+ }
+
+ ret = ocfs2_malloc_block(fs->fs_io, &buf);
+ if (ret) {
+ com_err(argv[0], ret,
+ "while allocating inode buffer");
+ goto out_close;
+ }
+
+ memset(&wb, 0, sizeof(wb));
+
+ ret = ocfs2_read_inode(fs, blkno, buf);
+ if (ret) {
+ com_err(argv[0], ret, "while reading inode %"PRIu64, blkno);
+ goto out_free;
+ }
+
+ di = (ocfs2_dinode *)buf;
+
+ wb.di = di;
+ ret = ocfs2_malloc_block(fs->fs_io, &wb.buf);
+ if (ret) {
+ com_err(argv[0], ret,
+ "while allocating block buffer");
+ goto out_free;
+ }
+
+ ret = ocfs2_block_iterate(fs, blkno, 0,
+ walk_blocks_func,
+ &wb);
+ if (ret) {
+ com_err(argv[0], ret,
+ "while walking blocks");
+ goto out_free;
+ }
+
+ di->id1.bitmap1.i_used = wb.used;
+
+ ret = ocfs2_write_inode(fs, blkno, buf);
+ if (ret) {
+ com_err(argv[0], ret, "while reading inode %"PRIu64, blkno);
+ goto out_free;
+ }
+
+out_free:
+ if (wb.buf)
+ ocfs2_free(&wb.buf);
+
+ ocfs2_free(&buf);
+
+out_close:
+ ret = ocfs2_close(fs);
+ if (ret) {
+ com_err(argv[0], ret,
+ "while closing file \"%s\"", filename);
+ }
+
+out:
+ return 0;
+}
+
+
More information about the Ocfs2-tools-commits
mailing list