diff options
| author |   itojun <itojun@openbsd.org> | 2003-05-29 00:39:12 +0000 |
|---|---|---|
| committer | itojun <itojun@openbsd.org> | 2003-05-29 00:39:12 +0000 |
| commit | 7d6c9aeab35e079f7bad41fda5a569e9acde86dd (patch) | |
| tree | b3291fe76e74703321c8b4a6f015818401780bf9 /bin/systrace/filter.c | |
| parent | use m_pulldown not m_pullup2. fix some bugs in IPv6 tcp_trace(). (diff) | |
| download | wireguard-openbsd-7d6c9aeab35e079f7bad41fda5a569e9acde86dd.tar.xz wireguard-openbsd-7d6c9aeab35e079f7bad41fda5a569e9acde86dd.zip | |
>permit numberic values for uid and gid; allow "<" and ">" for less and
>greate; requested by dugsong@,
strum ok
Diffstat (limited to 'bin/systrace/filter.c')
| -rw-r--r-- | bin/systrace/filter.c | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/bin/systrace/filter.c b/bin/systrace/filter.c index 3737b722767..94f815dce92 100644 --- a/bin/systrace/filter.c +++ b/bin/systrace/filter.c @@ -1,4 +1,4 @@ -/* $OpenBSD: filter.c,v 1.25 2003/04/24 09:49:06 mpech Exp $ */ +/* $OpenBSD: filter.c,v 1.26 2003/05/29 00:39:12 itojun Exp $ */ /* * Copyright 2002 Niels Provos <provos@citi.umich.edu> * All rights reserved. @@ -134,19 +134,36 @@ filter_match(struct intercept_pid *icpid, struct intercept_tlq *tls, int filter_predicate(struct intercept_pid *icpid, struct predicate *pdc) { - int negative; + int pidnr, pdcnr; int res = 0; if (!pdc->p_flags) return (1); - negative = pdc->p_flags & PREDIC_NEGATIVE; - if (pdc->p_flags & PREDIC_UID) - res = icpid->uid == pdc->p_uid; - else if (pdc->p_flags & PREDIC_GID) - res = icpid->gid == pdc->p_gid; + if (pdc->p_flags & PREDIC_UID) { + pidnr = icpid->uid; + pdcnr = pdc->p_uid; + } else { + pidnr = icpid->gid; + pdcnr = pdc->p_gid; + } + + switch (pdc->p_flags & PREDIC_MASK) { + case PREDIC_NEGATIVE: + res = pidnr != pdcnr; + break; + case PREDIC_LESSER: + res = pidnr < pdcnr; + break; + case PREDIC_GREATER: + res = pidnr > pdcnr; + break; + default: + res = pidnr == pdcnr; + break; + } - return (negative ? !res : res); + return (res); } short |