Messages in this thread | | | Date | Mon, 31 May 1999 01:44:05 -0500 (CDT) | From | James McCollough <> | Subject | Re: Migrating to larger numbers |
| |
On Sun, 30 May 1999, Augusto Cesar wrote:
> On Sat, 29 May 1999, Nicholas Tufar wrote: > > > On 27 May 1999, H. Peter Anvin wrote: > > > > > Okay, 2.3 is out; it's time to get some fundamental data types > > > expanded: > > > > > > REQUIRED: > > > > > > uid_t, gid_t: 32 bits minimum, 32 bits probably OK. > > > > Some ISPs and mail servers may have more than 65536 users on one system. > > I would propose to make uid_t and gid_t 64 bits. > > > > I vote for 32 bits, *some* ISPs have more than 65536 users, but they can > find others solutions, like using SQL databases for users accounts, if we > use a gid_t of 64 bits its more 32 bits for every gid_t variable, this > will increase up the size of kernel and decresing the speed with a feature > for only a couple of ISPs. IMHO. > 16-bit range = 0 to 2^16 = 0 to 65,535 32-bit range = 0 to 2^32 = 0 to 4,294,967,296
unless you have more than 4.2 billion users, 32-bit uid_t and gid_t types should be adequate.
-james
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |