stat() / lstat() and incorrect field values


Hi all,

stat() and lstat() calls seem to be consistently giving me correct
st_dev and st_gid values, but incorrect values for st_ino, st_mode,
st_size, st_nlink, and st_uid (I've not analysed the other fileds yet).

I'm not doing anything special, just:

#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

...
struct stat st;
stat(filename, &st);

/* printing values here gives unexpected results */

(I'm checking the result of the stat() call before querying values,
obviously :-)

For any file, st_mode seems to always end up being 0, st_ino is a random
integer value (consistent across runs against the same file), st_nlink
ends up being very close to what I st_ino *should* be (checking against
the 'stat' system binary).

It's almost as though memory gets copied somewhere behind the scenes and
something's getting misaligned; but if so, why might that be - and how
come it's not limited to a single kernel release? Makes me think it's user
error, but I'm not sure what I'm doing wrong :-)

cheers

Jules


.

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