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login: reuse DEAD_PROCESS utmp entries 

Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=858009
Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2012-10-05 12:07:10 +02:00
parent f7b59bb27f
commit 98193daa8c
1 changed files with 11 additions and 3 deletions
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14
login-utils/login.c
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@ -584,14 +584,22 @@ static void log_utmp(struct login_context *cxt)
/* If we can't find a pre-existing entry by pid, try by line.
* BSD network daemons may rely on this.
*/
if (utp == NULL) {
if (utp == NULL && cxt->tty_name) {
setutent();
ut.ut_type = LOGIN_PROCESS;
if (cxt->tty_name)
strncpy(ut.ut_line, cxt->tty_name, sizeof(ut.ut_line));
strncpy(ut.ut_line, cxt->tty_name, sizeof(ut.ut_line));
utp = getutline(&ut);
}
/* If we can't find a pre-existing entry by pid and line, try it by id.
* Very stupid telnetd deamons don't set up utmp at all (kzak) */
if (utp == NULL && cxt->tty_number) {
setutent();
ut.ut_type = DEAD_PROCESS;
strncpy(ut.ut_id, cxt->tty_number, sizeof(ut.ut_id));
utp = getutid(&ut);
}
if (utp)
memcpy(&ut, utp, sizeof(ut));
else