How to support LFS on ppc

How to support LFS on ppc

[JohnsonCheng]

[-- Attachment #1: Type: text/plain, Size: 689 bytes --]

Dear All,

 

I have a problem about Large File System on ppc. The following is my example
code:

 

#define _FILE_OFFSET_BITS 64

#include <sys/stat.h>

#include <unistd.h>

Int main()

{

           struct stat buf;

           stat64("/3G",&buf);

           printf("size of test = %ld \n",buf.st_size);

           lstat64("/3G",&buf);

     printf("size of test 2= %ld\n",buf.st_size);

           return 0;

}

 

The conclusion is as following:

size of test = 2141735952

size of test 2= 805910402

 

But the real size of 3G file is 3145728000. I think it maybe the offset is
wrong, but I don't know how to correct it. Can someone give me some advise.

 

Thanks,

Johnson Cheng


[-- Attachment #2: Type: text/html, Size: 6370 bytes --]

RE: How to support LFS on ppc

[Fillod Stephane]

>I have a problem about Large File System on ppc. The following is my =
example code:

Actually not problem with LFS, but with int types.

>#define _FILE_OFFSET_BITS 64
>#include <sys/stat.h>
>#include <unistd.h>
>Int main()
>{
>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 struct stat buf;
>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 stat64("/3G",&buf);
>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 printf("size of test =3D %ld =
\n",buf.st_size);
                                   ^^^
Try %lld instead. Or to be portable, #include <inttypes.h>
and printf("size of test =3D %" PRId64 "\n", buf.st_size);

--=20
Stephane

RE: How to support LFS on ppc

[JohnsonCheng]

Dear Stephane,

Great. It's work when I use %lld instead of %ld.

Thanks,
Johnson Cheng


-----Original Message-----
From: Fillod Stephane [mailto:stephane.fillod@thomson.net]=20
Sent: Wednesday, September 14, 2005 5:48 PM
To: linux-ppc-embedded
Cc: JohnsonCheng
Subject: RE: How to support LFS on ppc=20

>I have a problem about Large File System on ppc. The following is my
example code:

Actually not problem with LFS, but with int types.

>#define _FILE_OFFSET_BITS 64
>#include <sys/stat.h>
>#include <unistd.h>
>Int main()
>{
>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 struct stat buf;
>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 stat64("/3G",&buf);
>=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 printf("size of test =3D %ld =
\n",buf.st_size);
                                   ^^^
Try %lld instead. Or to be portable, #include <inttypes.h>
and printf("size of test =3D %" PRId64 "\n", buf.st_size);

--=20
Stephane