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SubjectRe: [RFC] Additional pad in struct stat(64)
>>>>> Christoph Hellwig writes:

Ch> On Tue, Sep 26, 2000 at 04:12:41PM +0200, Andreas Jaeger wrote:
>> >>>>> Christoph Hellwig writes:
>> > Hi Linus,
>> > In the last weeks I've done some work on implement real working
>> > 4.4BSD file flags for Linux. This stuff does almost work.
>> > (No, I don't want to submit it for 2.4 - don't hit the D key :))
>> > Besides some syscalls (chflags, fchflags, lchflags) this needs
>> > an additional field in struct stat.
>> > On 32bit architectures this shouldn't be a real problem -
>> > we have a new struct stat64 and adding a field before Linux 2.4
>> > and glibc 2.2 are out shouldn't be a real problem.
>> glibc 2.1 and 2.2 use the same struct stat64.

Ch> Ok.
Ch> But glibc seems to ignore additional pad at the end of struct stat
Ch> (the new st_ino stuff worked, too).
Ch> For glibc 2.2 there would simply be a new version number for the xstat hack.

No - we would use symbol versioning. Those ever changing kernel
interfaces are a nightmare. :-(

It might be better if you could show us a possible patch for struct
stat so that we know what you mean - and can tell you exactly what
results this would have.

Andreas Jaeger
SuSE Labs
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