* License version 2.
* %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#include "ext2fs/ext2fs.h"
#include "e2freefrag.h"
-void usage(const char *prog)
+static void usage(const char *prog)
{
fprintf(stderr, "usage: %s [-c chunksize in kb] [-h] "
"device_name\n", prog);
+#ifndef DEBUGFS
exit(1);
+#endif
}
static int ul_log2(unsigned long arg)
return l;
}
-void init_chunk_info(ext2_filsys fs, struct chunk_info *info)
+static void init_chunk_info(ext2_filsys fs, struct chunk_info *info)
{
int i;
- info->chunkbits = ul_log2(info->chunkbytes);
info->blocksize_bits = ul_log2((unsigned long)fs->blocksize);
- info->blks_in_chunk = info->chunkbytes >> info->blocksize_bits;
+ if (info->chunkbytes) {
+ info->chunkbits = ul_log2(info->chunkbytes);
+ info->blks_in_chunk = info->chunkbytes >> info->blocksize_bits;
+ } else {
+ info->chunkbits = ul_log2(DEFAULT_CHUNKSIZE);
+ info->blks_in_chunk = DEFAULT_CHUNKSIZE >> info->blocksize_bits;
+ }
info->min = ~0UL;
info->max = info->avg = 0;
}
}
-void scan_block_bitmap(ext2_filsys fs, struct chunk_info *info)
+static void update_chunk_stats(struct chunk_info *info,
+ unsigned long chunk_size)
+{
+ unsigned long idx;
+
+ idx = ul_log2(chunk_size) + 1;
+ if (idx >= MAX_HIST)
+ idx = MAX_HIST-1;
+ info->histogram.fc_chunks[idx]++;
+ info->histogram.fc_blocks[idx] += chunk_size;
+
+ if (chunk_size > info->max)
+ info->max = chunk_size;
+ if (chunk_size < info->min)
+ info->min = chunk_size;
+ info->avg += chunk_size;
+ info->real_free_chunks++;
+}
+
+static void scan_block_bitmap(ext2_filsys fs, struct chunk_info *info)
{
- unsigned long long blocks_count = fs->super->s_blocks_count;
+ unsigned long long blocks_count = ext2fs_blocks_count(fs->super);
unsigned long long chunks = (blocks_count + info->blks_in_chunk) >>
(info->chunkbits - info->blocksize_bits);
unsigned long long chunk_num;
unsigned long last_chunk_size = 0;
unsigned long long chunk_start_blk = 0;
+ int used;
for (chunk_num = 0; chunk_num < chunks; chunk_num++) {
unsigned long long blk, num_blks;
/* Initialize starting block for first chunk correctly else
* there is a segfault when blocksize = 1024 in which case
* block_map->start = 1 */
- for (blk = (chunk_num == 0 ? fs->super->s_first_data_block : 0);
- blk < num_blks; blk++, chunk_start_blk++) {
- int used = ext2fs_fast_test_block_bitmap(fs->block_map,
- chunk_start_blk);
+ for (blk = 0; blk < num_blks; blk++, chunk_start_blk++) {
+ if (chunk_num == 0 && blk == 0) {
+ blk = fs->super->s_first_data_block;
+ chunk_start_blk = blk;
+ }
+ used = ext2fs_fast_test_block_bitmap2(fs->block_map,
+ chunk_start_blk >> fs->cluster_ratio_bits);
if (!used) {
last_chunk_size++;
chunk_free++;
}
if (used && last_chunk_size != 0) {
- unsigned long index;
-
- index = ul_log2(last_chunk_size) + 1;
- info->histogram.fc_chunks[index]++;
- info->histogram.fc_blocks[index] +=
- last_chunk_size;
-
- if (last_chunk_size > info->max)
- info->max = last_chunk_size;
- if (last_chunk_size < info->min)
- info->min = last_chunk_size;
- info->avg += last_chunk_size;
-
- info->real_free_chunks++;
+ update_chunk_stats(info, last_chunk_size);
last_chunk_size = 0;
}
}
if (chunk_free == info->blks_in_chunk)
info->free_chunks++;
}
+ if (last_chunk_size != 0)
+ update_chunk_stats(info, last_chunk_size);
}
-errcode_t get_chunk_info(ext2_filsys fs, struct chunk_info *info)
+static errcode_t get_chunk_info(ext2_filsys fs, struct chunk_info *info,
+ FILE *f)
{
unsigned long total_chunks;
- char *unitp = "KMGTPEZY";
+ const char *unitp = "KMGTPEZY";
int units = 10;
- unsigned long start = 0, end, cum;
+ unsigned long start = 0, end;
int i, retval = 0;
scan_block_bitmap(fs, info);
- printf("Total blocks: %u\nFree blocks: %u (%0.1f%%)\n",
- fs->super->s_blocks_count, fs->super->s_free_blocks_count,
- (double)fs->super->s_free_blocks_count * 100 /
- fs->super->s_blocks_count);
-
- printf("\nChunksize: %lu bytes (%u blocks)\n",
- info->chunkbytes, info->blks_in_chunk);
- total_chunks = (fs->super->s_blocks_count + info->blks_in_chunk) >>
- (info->chunkbits - info->blocksize_bits);
- printf("Total chunks: %lu\nFree chunks: %lu (%0.1f%%)\n",
- total_chunks, info->free_chunks,
- (double)info->free_chunks * 100 / total_chunks);
+ fprintf(f, "Total blocks: %llu\nFree blocks: %u (%0.1f%%)\n",
+ ext2fs_blocks_count(fs->super), fs->super->s_free_blocks_count,
+ (double)fs->super->s_free_blocks_count * 100 /
+ ext2fs_blocks_count(fs->super));
+
+ if (info->chunkbytes) {
+ fprintf(f, "\nChunksize: %lu bytes (%u blocks)\n",
+ info->chunkbytes, info->blks_in_chunk);
+ total_chunks = (ext2fs_blocks_count(fs->super) +
+ info->blks_in_chunk) >>
+ (info->chunkbits - info->blocksize_bits);
+ fprintf(f, "Total chunks: %lu\nFree chunks: %lu (%0.1f%%)\n",
+ total_chunks, info->free_chunks,
+ (double)info->free_chunks * 100 / total_chunks);
+ }
/* Display chunk information in KB */
if (info->real_free_chunks) {
info->min = 0;
}
- printf("\nMin. free extent: %lu KB \nMax. free extent: %lu KB\n"
- "Avg. free extent: %lu KB\n", info->min, info->max, info->avg);
+ fprintf(f, "\nMin. free extent: %lu KB \nMax. free extent: %lu KB\n"
+ "Avg. free extent: %lu KB\n", info->min, info->max, info->avg);
+ fprintf(f, "Num. free extent: %lu\n", info->real_free_chunks);
- printf("\nHISTOGRAM OF FREE EXTENT SIZES:\n");
- printf("%s : %12s %12s %7s\n", "Extent Size Range", "Free extents",
- "Free Blocks", "Percent");
+ fprintf(f, "\nHISTOGRAM OF FREE EXTENT SIZES:\n");
+ fprintf(f, "%s : %12s %12s %7s\n", "Extent Size Range",
+ "Free extents", "Free Blocks", "Percent");
for (i = 0; i < MAX_HIST; i++) {
end = 1 << (i + info->blocksize_bits - units);
- if (info->histogram.fc_chunks[i] != 0)
- printf("%5lu%c...%5lu%c- : %12lu %12lu %6.2f%%\n",
- start, *unitp, end, *unitp,
- info->histogram.fc_chunks[i],
- info->histogram.fc_blocks[i],
- (double)info->histogram.fc_blocks[i] * 100 /
- fs->super->s_free_blocks_count);
+ if (info->histogram.fc_chunks[i] != 0) {
+ char end_str[32];
+
+ sprintf(end_str, "%5lu%c-", end, *unitp);
+ if (i == MAX_HIST-1)
+ strcpy(end_str, "max ");
+ fprintf(f, "%5lu%c...%7s : %12lu %12lu %6.2f%%\n",
+ start, *unitp, end_str,
+ info->histogram.fc_chunks[i],
+ info->histogram.fc_blocks[i],
+ (double)info->histogram.fc_blocks[i] * 100 /
+ fs->super->s_free_blocks_count);
+ }
start = end;
if (start == 1<<10) {
start = 1;
return retval;
}
-void close_device(char *device_name, ext2_filsys fs)
+static void close_device(char *device_name, ext2_filsys fs)
{
int retval = ext2fs_close(fs);
com_err(device_name, retval, "while closing the filesystem.\n");
}
-void collect_info(ext2_filsys fs, struct chunk_info *chunk_info)
+static void collect_info(ext2_filsys fs, struct chunk_info *chunk_info, FILE *f)
{
- unsigned int retval = 0, i, free_blks;
+ unsigned int retval = 0;
- printf("Device: %s\n", fs->device_name);
- printf("Blocksize: %u bytes\n", fs->blocksize);
+ fprintf(f, "Device: %s\n", fs->device_name);
+ fprintf(f, "Blocksize: %u bytes\n", fs->blocksize);
retval = ext2fs_read_block_bitmap(fs);
if (retval) {
init_chunk_info(fs, chunk_info);
- retval = get_chunk_info(fs, chunk_info);
+ retval = get_chunk_info(fs, chunk_info, f);
if (retval) {
com_err(fs->device_name, retval, "while collecting chunk info");
close_device(fs->device_name, fs);
}
}
-void open_device(char *device_name, ext2_filsys *fs)
+#ifndef DEBUGFS
+static void open_device(char *device_name, ext2_filsys *fs)
{
int retval;
int flag = EXT2_FLAG_FORCE;
exit(1);
}
}
+#endif
+#ifdef DEBUGFS
+#include "debugfs.h"
+
+void do_freefrag(int argc, char **argv)
+#else
int main(int argc, char *argv[])
+#endif
{
- struct chunk_info chunk_info = { .chunkbytes = DEFAULT_CHUNKSIZE };
- errcode_t retval = 0;
+ struct chunk_info chunk_info;
ext2_filsys fs = NULL;
- char *device_name;
char *progname;
- char c, *end;
+ char *end;
+ int c;
+
+#ifdef DEBUGFS
+ if (check_fs_open(argv[0]))
+ return;
+#else
+ char *device_name;
add_error_table(&et_ext2_error_table);
+#endif
progname = argv[0];
+ memset(&chunk_info, 0, sizeof(chunk_info));
while ((c = getopt(argc, argv, "c:h")) != EOF) {
switch (c) {
}
chunk_info.chunkbytes *= 1024;
break;
- default:
- fprintf(stderr, "%s: bad option '%c'\n",
- progname, c);
case 'h':
+ default:
usage(progname);
break;
}
}
+#ifndef DEBUGFS
if (optind == argc) {
fprintf(stderr, "%s: missing device name.\n", progname);
usage(progname);
device_name = argv[optind];
open_device(device_name, &fs);
+#else
+ fs = current_fs;
+#endif
- if (chunk_info.chunkbytes < fs->blocksize) {
+ if (chunk_info.chunkbytes && (chunk_info.chunkbytes < fs->blocksize)) {
fprintf(stderr, "%s: chunksize must be greater than or equal "
"to filesystem blocksize.\n", progname);
exit(1);
}
- collect_info(fs, &chunk_info);
+ collect_info(fs, &chunk_info, stdout);
+#ifndef DEBUGFS
close_device(device_name, fs);
- return retval;
+ return 0;
+#endif
}
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff