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Add bound checks in emulation of sigaction(2). This fixes a part of

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PR kern/8904 by Dave Sainty.
This commit is contained in:
tron 1999-12-04 22:21:12 +00:00
parent 60e5eb1dd2
commit 96fdbb96a8
1 changed files with 6 additions and 3 deletions
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9
sys/compat/linux/common/linux_sigaction.c
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@ -1,4 +1,4 @@
/* $NetBSD: linux_sigaction.c,v 1.17 1998/10/07 23:47:44 erh Exp $ */
/* $NetBSD: linux_sigaction.c,v 1.18 1999/12/04 22:21:12 tron Exp $ */
/*-
* Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
@ -77,7 +77,7 @@ linux_sys_sigaction(p, v, retval)
} */ *uap = v;
struct linux_old_sigaction nlsa, olsa;
struct sigaction nbsa, obsa;
int error;
int error, sig;
/* XXX XAX handle switch to RT signal handler */
/* XXX XAX and update emuldata->ps_siginfo. */
@ -88,7 +88,10 @@ linux_sys_sigaction(p, v, retval)
return (error);
linux_old_to_native_sigaction(&nlsa, &nbsa);
}
error = sigaction1(p, linux_to_native_sig[SCARG(uap, signum)],
sig = SCARG(uap, signum);
if (sig < 0 || sig >= LINUX__NSIG)
return (EINVAL);
error = sigaction1(p, linux_to_native_sig[sig],
SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0);
if (error)
return (error);