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2023 Nov 21
0
is it safe to encode/decode uid_t/gid_t in 4 bytes?
Hi,
Samba internally uses 8 bytes to encode/decode uid_t/gid_t, e.g.,
_PUBLIC_ enum ndr_err_code ndr_push_uid_t(struct ndr_push *ndr, int
ndr_flags, uid_t u)
{
NDR_PUSH_CHECK_FLAGS(ndr, ndr_flags);
return ndr_push_hyper(ndr, NDR_SCALARS, (uint64_t)u);
}
I want to know if it is safe to use 4 bytes to reduce the size in storing
security_info in tdb.
I am not aware of if there is any platform on which uid_t or gid_t is
64bits, and it seems that the encoded data is not...