On 2000-Mar-13 12:01:03 +1100, Paul Richards <[EMAIL PROTECTED]> wrote:
>id = strtoul(p, (char **)NULL, 10);
> if ((errno == ERANGE) || (id >= UID_MAX)) {
> warnx("%s > max uid value (%lu)", p, UID_MAX);
> return (0);
>}
You can do this now. Just add the following:
pid_t UID_MAX = ~0;
somewhere before the code.
>When you see it written out like that the latter is a lot more
>informative. It also provides the flexibility to limit the parameters
>max value even if the type allows it to be larger. This is of particular
>significance to UIDs which are currently limited to a far smaller value
>than would fit in a uid_t.
AFAIK, there's no real hard limit. adduser(8) limits uids to 32000
to prevent portability problems with systems using a signed 16-bit
uid_t (whilst allowing for a few `special' uids near the top of the
range). Other potential limits are ~65000 (16-bit unsigned) and
99999 (5 decimal digits).
It would be nice if there was a system-wide constant that could be
used for this, but it's not obvious where this should be located.
(And note that adduser(8) is a perl script, so it can't use a C
header file without some contortions).
Peter
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