The problem is basically that offset wasn't supported in ow_read.c
for all types.
Two system calls where made when reading 10.061847000800/temperature.
First read return 15 bytes, and the second call was reading from
offset=15 and returned errno=-ENOTAVAIL according to the owfs source.
I have added offset-support now and it just return 0 if
offset==filesize since there are no more bytes to read.
I noticed some other really nasty things with the char-buffer "c" in:
FS_output_unsigned( unsigned int value, char * buf, const size_t size,
const struct parsedname * pn ) {
int suglen = FileLength(pn);
char c[suglen+2];
....
}
After returning from the function, the variable "const size_t size"
was corrupted! I have changed those buffers to mallocs instead just
to get rid of the problem.
Adding some debug-output in FS_parse_read() before and after the
call to FS_output_unsigned() will show the problem.
It's also possible to use fseek() now when reading from the files
if somebody wants...
if(!(fp = fopen("/var/1wire/statistics/read/bytes", "r")))
exit(0);
rc = fseek(fp, 8, SEEK_SET);
if(rc) {
printf("fseek returned %d\n", rc);
exit(0);
}
pos = 0;
do {
if((sz = fread(&tmp[pos], 1, 1, fp)) <= 0) {
tmp[pos] = 0;
break;
}
pos++;
} while(1);
fclose(fp);
/Christian
On Wed, 2005-06-22 at 09:40 +0200, Christian Magnusson wrote:
> I noticed some strange behavior with the direct_io flag in fuse. My
> "cat" return an errno "Cannot assign requested address" after reading a
> sensor, but "tail" works ok.. I haven't figured out why yet, but
> it's something to fix.
>
> /Christian
>
>
> > owfs --fuse_opt="direct_io" -P /var/run/owfs.pid -s
> 192.168.1.10:3002 /var/1wire/
>
> > cat /var/1wire/10.061847000800/temperature
> 25.1875cat: /var/1wire/10.061847000800/temperature: Cannot assign
> requested address
> >
> > tail /var/1wire/uncached/10.061847000800/temperature
> [EMAIL PROTECTED] ~]#
> >
> > cat /var/1wire/10.061847000800/temperature
> 25.1875cat: /var/1wire/10.061847000800/temperature: Cannot assign
> requested address
>
>
--
Christian Magnusson <[EMAIL PROTECTED]>
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