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useradd: modify check ID range for system users 

useradd warns that a system user ID less than SYS_UID_MIN is outside the
expected range, even though that ID has been specifically selected with
the "-u" option.

In my opinion all the user ID's below SYS_UID_MAX are for the system,
thus I change the condition to take that into account.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2004911

Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>
This commit is contained in:
Iker Pedrosa 2022-01-04 13:06:00 +01:00 committed by Serge Hallyn
parent e101219ad7
commit f1f1678e13
1 changed files with 2 additions and 4 deletions
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6
src/useradd.c
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@ -2409,11 +2409,9 @@ static void check_uid_range(int rflg, uid_t user_id)
uid_t uid_min ;
uid_t uid_max ;
if (rflg) {
uid_min = (uid_t)getdef_ulong("SYS_UID_MIN",101UL);
uid_max = (uid_t)getdef_ulong("SYS_UID_MAX",getdef_ulong("UID_MIN",1000UL)-1);
if (uid_min <= uid_max) {
if (user_id < uid_min || user_id >uid_max)
fprintf(stderr, _("%s warning: %s's uid %d outside of the SYS_UID_MIN %d and SYS_UID_MAX %d range.\n"), Prog, user_name, user_id, uid_min, uid_max);
if (user_id > uid_max) {
fprintf(stderr, _("%s warning: %s's uid %d is greater than SYS_UID_MAX %d\n"), Prog, user_name, user_id, uid_max);
}
}else{
uid_min = (uid_t)getdef_ulong("UID_MIN", 1000UL);