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Code Issues Releases Activity

Audit the arguments to the kill(2) and killpg(2) system calls.

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Obtained from: TrustedBSD Project
Approved by: rwatson (mentor)
This commit is contained in:
Wayne Salamon 2006-02-14 01:17:03 +00:00
parent 59643a2120
commit bfd7575a39
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=155633
1 changed files with 7 additions and 0 deletions
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7
sys/kern/kern_sig.c
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@ -79,6 +79,8 @@ __FBSDID("$FreeBSD$");
#include <posix4/posix4.h>
#include <machine/cpu.h>
#include <security/audit/audit.h>
#if defined (__alpha__) && !defined(COMPAT_43)
#error "You *really* need COMPAT_43 on the alpha for longjmp(3)"
#endif
@ -1709,6 +1711,7 @@ kill(td, uap)
register struct proc *p;
int error;
AUDIT_ARG(signum, uap->signum);
if ((u_int)uap->signum > _SIG_MAXSIG)
return (EINVAL);
@ -1718,12 +1721,14 @@ kill(td, uap)
if ((p = zpfind(uap->pid)) == NULL)
return (ESRCH);
}
AUDIT_ARG(process, p);
error = p_cansignal(td, p, uap->signum);
if (error == 0 && uap->signum)
psignal(p, uap->signum);
PROC_UNLOCK(p);
return (error);
}
AUDIT_ARG(pid, uap->pid);
switch (uap->pid) {
case -1: /* broadcast signal */
return (killpg1(td, uap->signum, 0, 1));
@ -1752,6 +1757,8 @@ okillpg(td, uap)
register struct okillpg_args *uap;
{
AUDIT_ARG(signum, uap->signum);
AUDIT_ARG(pid, uap->pgid);
if ((u_int)uap->signum > _SIG_MAXSIG)
return (EINVAL);