Re: JFFS2 uncompressed?

Steven Scholz
2003-04-08T15:43:10Z

[-- Attachment #1: Type: text/plain, Size: 374 bytes --]

Jörn Engel schrieb:
> On Tue, 8 April 2003 16:33:45 +0200, Steven Scholz wrote:
>
>>How about mkfs.jff2? Do I have to change something there as well?
>
>
> Yes, you do. Shouldn't be much more complicated, but I didn't do it
> myself yet.
>
> Could you post a patch for mkfs.jffs2, when done? Just for the
> curious.

Here you are!

Just a quick hack! :o) Enjoy!

Steven

[-- Attachment #2: jffs2-nocompress.patch --]
[-- Type: text/plain, Size: 2187 bytes --]

Index: util/mkfs.jffs2.c
===================================================================
RCS file: /home/cvs/mtd/util/mkfs.jffs2.c,v
retrieving revision 1.36
diff -p -u -r1.36 mkfs.jffs2.c
--- util/mkfs.jffs2.c 3 Apr 2003 11:49:22 -0000 1.36
+++ util/mkfs.jffs2.c 8 Apr 2003 15:41:15 -0000
@@ -98,6 +98,7 @@ static int squash_uids = 0;
static int squash_perms = 0;
static int fake_times = 0;
static int target_endian = __BYTE_ORDER;
+static int do_compress = 1;
static const char *const app_name = "mkfs.jffs2";
static const char *const memory_exhausted = "memory exhausted";

@@ -691,6 +692,9 @@ unsigned char jffs2_compress(unsigned ch
{
int ret;

+ if (! do_compress)
+ return JFFS2_COMPR_NONE; /* We don't want to compress */
+
ret = jffs2_zlib_compress(data_in, cpage_out, datalen, cdatalen);
if (!ret) {
return JFFS2_COMPR_ZLIB;
@@ -1177,6 +1181,7 @@ static struct option long_options[] = {
{"no-cleanmarkers", 0, NULL, 'n'},
{"cleanmarker", 1, NULL, 'c'},
{"squash", 0, NULL, 'q'},
+ {"no-compression", 0, NULL, 'u'},
{"squash-uids", 0, NULL, 'U'},
{"squash-perms", 0, NULL, 'P'},
{"faketime", 0, NULL, 'f'},
@@ -1202,6 +1207,7 @@ static char *helptext =
" -D, --devtable=FILE Use the named FILE as a device table file\n"
" -f, --faketime Change all file times to '0' for regression testing\n"
" -q, --squash Squash permissions and owners making all files be owned by root\n"
+ " -u, --no-compression Don't use any compression\n"
" -U, --squash-uids Squash owners making all files be owned by root\n"
" -P, --squash-perms Squash permissions on all files\n"
" -h, --help Display this help text\n"
@@ -1220,7 +1226,7 @@ int main(int argc, char **argv)
struct filesystem_entry *root;

while ((opt = getopt_long(argc, argv,
- "D:d:r:s:o:qUPfh?vVe:lbp::nc:", long_options, &c)) >= 0)
+ "D:d:r:s:o:quUPfh?vVe:lbp::nc:", long_options, &c)) >= 0)
{
switch (opt) {
case 'D':
@@ -1256,6 +1262,10 @@ int main(int argc, char **argv)
case 'q':
squash_uids = 1;
squash_perms = 1;
+ break;
+
+ case 'u':
+ do_compress = 0;
break;