Hello,
I want to create a fuse file similar to the /proc/version file.
It's stat size is zero, but you can read from it.
However when I set st_size to zero, the kernel-read returns zero.
When st_size is not zero, the kernel-read returns no more than st_size
bytes.
Something seems to limit the amount of bytes to st_size.
How can I prevent this from happening to create a which behaves like
/proc/version?
strace st_size is zero:
open("fuse/dir/mysubdir/test.txt", O_RDONLY) =3D 3 fstat(3,
{st_mode=3DS_IFREG|0640, st_size=3D0, ...}) =3D 0
read(3, "", 32768) =3D 0
close(3) =3D 0
strace st_size is not zero:
open("fuse/dir/mysubdir/test.txt", O_RDONLY) =3D 3 fstat(3,
{st_mode=3DS_IFREG|0640, st_size=3D1000, ...}) =3D 0 read(3, =
"\0\1\2\3\4\5\6\7\10\t\n\v\f\r\16\17\20\21\22\23\24\25\26\27\30\31\32\33
\=
34\35\36\37"..., 32768) =3D 1000
write(1, =
"\0\1\2\3\4\5\6\7\10\t\n\v\f\r\16\17\20\21\22\23\24\25\26\27\30\31\32\33
\=
34\35\36\37"..., 1000) =3D 1000
read(3, "", 32768) =3D 0
close(3) =3D 0
uname -a for my system:
Linux hostname 2.6.31-19-generic #56-Ubuntu SMP Thu Jan 28 02:39:34 UTC
= 2010 x86_64 GNU/Linux
Thanks in advance,
Tom
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