* License version 2.
* %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
extern char *optarg;
extern int optind;
#endif
+#if defined(HAVE_EXT2_IOCTLS) && !defined(DEBUGFS)
+# include <sys/ioctl.h>
+# include <sys/types.h>
+# include <sys/stat.h>
+# include <fcntl.h>
+# include <limits.h>
+#endif
#include "ext2fs/ext2_fs.h"
#include "ext2fs/ext2fs.h"
#include "e2freefrag.h"
-void usage(const char *prog)
+#if defined(HAVE_EXT2_IOCTLS) && !defined(DEBUGFS)
+# ifdef HAVE_LINUX_FSMAP_H
+# include <linux/fsmap.h>
+# endif
+# include "fsmap.h"
+#endif
+
+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;
}
}
-void update_chunk_stats(struct chunk_info *info, unsigned long chunk_size)
+static void update_chunk_stats(struct chunk_info *info,
+ unsigned long chunk_size)
{
- unsigned long index;
+ unsigned long idx;
- index = ul_log2(chunk_size) + 1;
- if (index >= MAX_HIST)
- index = MAX_HIST-1;
- info->histogram.fc_chunks[index]++;
- info->histogram.fc_blocks[index] += chunk_size;
+ 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;
info->real_free_chunks++;
}
-void scan_block_bitmap(ext2_filsys fs, struct chunk_info *info)
+static void scan_block_bitmap(ext2_filsys fs, struct chunk_info *info)
{
unsigned long long blocks_count = ext2fs_blocks_count(fs->super);
unsigned long long chunks = (blocks_count + info->blks_in_chunk) >>
chunk_start_blk = blk;
}
used = ext2fs_fast_test_block_bitmap2(fs->block_map,
- chunk_start_blk);
+ chunk_start_blk >> fs->cluster_ratio_bits);
if (!used) {
last_chunk_size++;
chunk_free++;
update_chunk_stats(info, last_chunk_size);
}
-errcode_t get_chunk_info(ext2_filsys fs, struct chunk_info *info)
+#if defined(HAVE_EXT2_IOCTLS) && !defined(DEBUGFS)
+# define FSMAP_EXTENTS 1024
+static int scan_online(ext2_filsys fs, struct chunk_info *info)
+{
+ struct fsmap_head *fsmap;
+ struct fsmap *extent;
+ struct fsmap *p;
+ char mntpoint[PATH_MAX + 1];
+ errcode_t retval;
+ int mount_flags;
+ int fd;
+ int ret;
+ int i;
+
+ /* Try to open the mountpoint for a live query. */
+ retval = ext2fs_check_mount_point(fs->device_name, &mount_flags,
+ mntpoint, PATH_MAX);
+ if (retval) {
+ com_err(fs->device_name, retval, "while checking mount status");
+ return 0;
+ }
+ if (!mount_flags & EXT2_MF_MOUNTED)
+ return 0;
+ fd = open(mntpoint, O_RDONLY);
+ if (fd < 0) {
+ com_err(mntpoint, errno, "while opening mount point");
+ return 0;
+ }
+
+ fsmap = malloc(fsmap_sizeof(FSMAP_EXTENTS));
+ if (!fsmap) {
+ com_err(fs->device_name, errno, "while allocating memory");
+ return 0;
+ }
+
+ memset(fsmap, 0, sizeof(*fsmap));
+ fsmap->fmh_count = FSMAP_EXTENTS;
+ fsmap->fmh_keys[1].fmr_device = UINT_MAX;
+ fsmap->fmh_keys[1].fmr_physical = ULLONG_MAX;
+ fsmap->fmh_keys[1].fmr_owner = ULLONG_MAX;
+ fsmap->fmh_keys[1].fmr_offset = ULLONG_MAX;
+ fsmap->fmh_keys[1].fmr_flags = UINT_MAX;
+
+ /* Fill the extent histogram with live data */
+ while (1) {
+ ret = ioctl(fd, FS_IOC_GETFSMAP, fsmap);
+ if (ret < 0) {
+ com_err(fs->device_name, errno, "while calling fsmap");
+ free(fsmap);
+ return 0;
+ }
+
+ /* No more extents to map, exit */
+ if (!fsmap->fmh_entries)
+ break;
+
+ for (i = 0, extent = fsmap->fmh_recs;
+ i < fsmap->fmh_entries;
+ i++, extent++) {
+ if (!(extent->fmr_flags & FMR_OF_SPECIAL_OWNER) ||
+ extent->fmr_owner != FMR_OWN_FREE)
+ continue;
+ update_chunk_stats(info,
+ extent->fmr_length / fs->blocksize);
+ }
+
+ p = &fsmap->fmh_recs[fsmap->fmh_entries - 1];
+ if (p->fmr_flags & FMR_OF_LAST)
+ break;
+ fsmap_advance(fsmap);
+ }
+
+ return 1;
+}
+#else
+# define scan_online(fs, info) (0)
+#endif /* HAVE_EXT2_IOCTLS */
+
+static errcode_t scan_offline(ext2_filsys fs, struct chunk_info *info)
+{
+ errcode_t retval;
+
+ retval = ext2fs_read_block_bitmap(fs);
+ if (retval)
+ return retval;
+ scan_block_bitmap(fs, info);
+ return 0;
+}
+
+static errcode_t dump_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: %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));
+ fprintf(f, "Total blocks: %llu\nFree blocks: %llu (%0.1f%%)\n",
+ ext2fs_blocks_count(fs->super),
+ ext2fs_free_blocks_count(fs->super),
+ (double)ext2fs_free_blocks_count(fs->super) * 100 /
+ ext2fs_blocks_count(fs->super));
if (info->chunkbytes) {
- printf("\nChunksize: %lu bytes (%u blocks)\n",
- info->chunkbytes, info->blks_in_chunk);
+ 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);
- 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 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 = (info->min * fs->blocksize) >> 10;
- info->max = (info->max * fs->blocksize) >> 10;
- info->avg = (info->avg / info->real_free_chunks *
- fs->blocksize) >> 10;
+ unsigned int scale = fs->blocksize >> 10;
+ info->min = info->min * scale;
+ info->max = info->max * scale;
+ info->avg = info->avg / info->real_free_chunks * scale;
} else {
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);
- printf("Num. free extent: %lu\n", info->real_free_chunks);
+ 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) {
sprintf(end_str, "%5lu%c-", end, *unitp);
if (i == MAX_HIST-1)
strcpy(end_str, "max ");
- printf("%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);
+ 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 /
+ ext2fs_free_blocks_count(fs->super));
}
start = end;
if (start == 1<<10) {
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);
+ int retval = ext2fs_close_free(&fs);
if (retval)
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);
+ init_chunk_info(fs, chunk_info);
+ if (!scan_online(fs, chunk_info)) {
+ init_chunk_info(fs, chunk_info);
+ retval = scan_offline(fs, chunk_info);
+ }
if (retval) {
com_err(fs->device_name, retval, "while reading block bitmap");
close_device(fs->device_name, fs);
exit(1);
}
- init_chunk_info(fs, chunk_info);
-
- retval = get_chunk_info(fs, chunk_info);
+ retval = dump_chunk_info(fs, chunk_info, f);
if (retval) {
- com_err(fs->device_name, retval, "while collecting chunk info");
+ com_err(fs->device_name, retval, "while dumping chunk info");
close_device(fs->device_name, fs);
exit(1);
}
}
-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;
+ int flag = EXT2_FLAG_FORCE | EXT2_FLAG_64BITS;
retval = ext2fs_open(device_name, flag, 0, 0, unix_io_manager, fs);
if (retval) {
com_err(device_name, retval, "while opening filesystem");
exit(1);
}
+ (*fs)->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
}
+#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 = { };
- errcode_t retval = 0;
+ struct chunk_info chunk_info;
ext2_filsys fs = NULL;
- char *device_name;
char *progname;
char *end;
int c;
+#ifdef DEBUGFS
+ if (check_fs_open(argv[0]))
+ return;
+ reset_getopt();
+#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 && (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
}
projects / thirdparty / e2fsprogs.git / blobdiff