opengnsys
/
ntfs-3g
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

gather info using mft search contexts 

(Logical change 1.200)
edge.strict_endians
flatcap.org!ntfs 2003-10-11 15:36:14 +00:00
parent 740b9f98a4
commit 1bd078c21a
1 changed files with 93 additions and 61 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

154
ntfsprogs/ntfscluster.c
View File

@ -26,6 +26,7 @@
#include <stdio.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include "ntfscluster.h"
#include "types.h"
@ -33,6 +34,7 @@
#include "utils.h"
#include "volume.h"
#include "debug.h"
#include "dir.h"
static const char *EXEC_NAME = "ntfscluster";
static struct options opts;
@ -223,83 +225,113 @@ int parse_options (int argc, char **argv)
/**
* free_space - Calculate the amount of space which isn't in use
*/
u64 free_space (ntfs_volume *vol)
{
return 0;
}
/**
* user_space - Calculate the amount of space of the user's files
*/
u64 user_space (ntfs_volume *vol)
{
return 0;
}
/**
* meta_space - Calculate the amount of space used by the filesystem structures
*/
u64 meta_space (ntfs_volume *vol)
{
return 0;
}
/**
* info - Display information about the volume
* info
*/
int info (ntfs_volume *vol)
{
u64 a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q;
int cps;
u64 fs, us, ms;
u64 a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u;
int cb, sb, cps;
u64 uc = 0, mc = 0, fc = 0;
cps = vol->cluster_size_bits - vol->sector_size_bits;
fs = free_space (vol);
ms = meta_space (vol);
us = user_space (vol);
struct mft_search_ctx *m_ctx;
ntfs_attr_search_ctx *a_ctx;
runlist_element *rl;
ATTR_RECORD *rec;
int z;
int inuse = 0;
m_ctx = mft_get_search_ctx (vol);
m_ctx->flags_search = FEMR_IN_USE | FEMR_METADATA | FEMR_BASE_RECORD | FEMR_NOT_BASE_RECORD;
while (mft_next_record (m_ctx) == 0) {
if (!(m_ctx->flags_match & FEMR_IN_USE))
continue;
inuse++;
a_ctx = ntfs_attr_get_search_ctx (NULL, m_ctx->inode->mrec);
while ((rec = find_attribute (AT_UNUSED, a_ctx))) {
if (!rec->non_resident)
continue;
rl = ntfs_mapping_pairs_decompress (vol, rec, NULL);
for (z = 0; rl[z].length > 0; z++)
{
if (rl[z].lcn >= 0) {
if (m_ctx->flags_match & FEMR_METADATA)
mc += rl[z].length;
else
uc += rl[z].length;
}
}
free (rl);
}
ntfs_attr_put_search_ctx (a_ctx);
}
mft_put_search_ctx (m_ctx);
cb = vol->cluster_size_bits;
sb = vol->sector_size_bits;
cps = cb - sb;
fc = vol->nr_clusters-mc-uc;
fc <<= cb;
mc <<= cb;
uc <<= cb;
a = vol->sector_size;
b = vol->cluster_size;
c = 1 << cps;
d = vol->nr_clusters >> cps;
d = vol->nr_clusters << cb;
e = vol->nr_clusters;
f = vol->nr_mft_records;
g = 0;
h = 0;
i = fs / a;
j = fs / b;
k = fs * 100 / a / d;
l = us / a;
m = us / b;
n = us * 100 / a / d;
o = ms / a;
p = ms / b;
q = ms * 100 / a / d;
f = vol->nr_clusters >> cps;
g = vol->nr_mft_records;
h = inuse;
i = h * 100 / g;
j = fc;
k = fc >> sb;
l = fc >> cb;
m = fc * 100 / b / e;
n = uc;
o = uc >> sb;
p = uc >> cb;
q = uc * 100 / b / e;
r = mc;
s = mc >> sb;
t = mc >> cb;
u = mc * 100 / b / e;
printf ("bytes per sector : %lld\n", a);
printf ("bytes per cluster : %lld\n", b);
printf ("sectors per cluster : %lld\n", c);
printf ("sectors per volume : %lld\n", d);
printf ("clusters per volume : %lld\n", e);
printf ("mft records total : %lld\n", f);
printf ("mft records in use : %lld\n", g);
printf ("mft records percentage : %lld\n", h);
printf ("sectors of free space : %lld\n", i);
printf ("clusters of free space : %lld\n", j);
printf ("percentage free space : %lld\n", k);
printf ("sectors of user data : %lld\n", l);
printf ("clusters of user data : %lld\n", m);
printf ("percentage user data : %lld\n", n);
printf ("sectors of metadata : %lld\n", o);
printf ("clusters of metadata : %lld\n", p);
printf ("percentage metadata : %lld\n", q);
printf ("bytes per volume : %lld\n", d);
printf ("sectors per volume : %lld\n", e);
printf ("clusters per volume : %lld\n", f);
printf ("mft records total : %lld\n", g);
printf ("mft records in use : %lld\n", h);
printf ("mft records percentage : %lld\n", i);
printf ("bytes of free space : %lld\n", j);
printf ("sectors of free space : %lld\n", k);
printf ("clusters of free space : %lld\n", l);
printf ("percentage free space : %lld\n", m);
printf ("bytes of user data : %lld\n", n);
printf ("sectors of user data : %lld\n", o);
printf ("clusters of user data : %lld\n", p);
printf ("percentage user data : %lld\n", q);
printf ("bytes of metadata : %lld\n", r);
printf ("sectors of metadata : %lld\n", s);
printf ("clusters of metadata : %lld\n", t);
printf ("percentage metadata : %lld\n", u);
return 0;
}
/**
* cluster_find
*/
@ -471,7 +503,7 @@ int main (int argc, char *argv[])
*/
case act_info:
default:
info (vol);
result = info (vol);
break;
}