diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1997-08-31 20:42:33 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1997-08-31 20:42:33 +0000 |
| commit | a92a8621636869003cc7fada3282dabf8e2908d8 (patch) | |
| tree | 021ef70139e06dead02f634e58755fca23983d72 /sys/kern/subr_log.c | |
| parent | 05848e415adc11c00256a98bcdc331082dfef00a (diff) | |
for non-tty TIOCSPGRP/F_SETOWN/FIOSETOWN pgid setting calls, store uid
and euid as well, then deliver them using new csignal() interface
which ensures that pgid setting process is permitted to signal the
pgid process(es). Thanks to newsham@aloha.net for extensive help and
discussion.
Diffstat (limited to 'sys/kern/subr_log.c')
| -rw-r--r-- | sys/kern/subr_log.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/sys/kern/subr_log.c b/sys/kern/subr_log.c index d874fe87a3f..29cf214531e 100644 --- a/sys/kern/subr_log.c +++ b/sys/kern/subr_log.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_log.c,v 1.3 1996/04/21 22:27:17 deraadt Exp $ */ +/* $OpenBSD: subr_log.c,v 1.4 1997/08/31 20:42:20 deraadt Exp $ */ /* $NetBSD: subr_log.c,v 1.11 1996/03/30 22:24:44 christos Exp $ */ /* @@ -60,6 +60,8 @@ struct logsoftc { int sc_state; /* see above for possibilities */ struct selinfo sc_selp; /* process waiting on select call */ int sc_pgid; /* process/group for async I/O */ + uid_t sc_siguid; /* uid for process that set sc_pgid */ + uid_t sc_sigeuid; /* euid for process that set sc_pgid */ } logsoftc; int log_open; /* also used in log() */ @@ -179,17 +181,12 @@ logselect(dev, rw, p) void logwakeup() { - struct proc *p; - if (!log_open) return; selwakeup(&logsoftc.sc_selp); - if (logsoftc.sc_state & LOG_ASYNC) { - if (logsoftc.sc_pgid < 0) - gsignal(-logsoftc.sc_pgid, SIGIO); - else if ((p = pfind(logsoftc.sc_pgid)) != NULL) - psignal(p, SIGIO); - } + if (logsoftc.sc_state & LOG_ASYNC) + csignal(logsoftc.sc_pgid, SIGIO, + logsoftc.sc_siguid, logsoftc.sc_sigeuid); if (logsoftc.sc_state & LOG_RDWAIT) { wakeup((caddr_t)msgbufp); logsoftc.sc_state &= ~LOG_RDWAIT; @@ -232,6 +229,8 @@ logioctl(dev, com, data, flag, p) case TIOCSPGRP: logsoftc.sc_pgid = *(int *)data; + logsoftc.sc_siguid = p->p_cred->p_ruid; + logsoftc.sc_sigeuid = p->p_ucred->cr_uid; break; case TIOCGPGRP: |