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Use p_cansee() to check that a target process for an audit state

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manipulation is visible to the subject process.  Remove XXX comments
suggesting this.

Convert one XXX on a difference from Darwin into a note: it's not a
bug, it's a feature.

Obtained from:	TrustedBSD Project
This commit is contained in:
Robert Watson 2006-12-29 10:49:13 +00:00
parent 681616160d
commit aa6fe97ca3
1 changed files with 9 additions and 3 deletions
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12
sys/security/audit/audit_syscalls.c
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@ -304,9 +304,12 @@ auditon(struct thread *td, struct auditon_args *uap)
if (udata.au_aupinfo.ap_pid < 1)
return (EINVAL);
/* XXXAUDIT: p_cansee()? */
if ((tp = pfind(udata.au_aupinfo.ap_pid)) == NULL)
return (EINVAL);
if (p_cansee(td, tp) != 0) {
PROC_UNLOCK(tp);
return (EINVAL);
}
udata.au_aupinfo.ap_auid = tp->p_au->ai_auid;
udata.au_aupinfo.ap_mask.am_success =
@ -324,9 +327,12 @@ auditon(struct thread *td, struct auditon_args *uap)
if (udata.au_aupinfo.ap_pid < 1)
return (EINVAL);
/* XXXAUDIT: p_cansee()? */
if ((tp = pfind(udata.au_aupinfo.ap_pid)) == NULL)
return (EINVAL);
if (p_cansee(td, tp) != 0) {
PROC_UNLOCK(tp);
return (EINVAL);
}
tp->p_au->ai_mask.am_success =
udata.au_aupinfo.ap_mask.am_success;
@ -570,7 +576,7 @@ auditctl(struct thread *td, struct auditctl_args *uap)
* validity checks, and grab another reference to the current
* credential.
*
* XXXAUDIT: On Darwin, a NULL path is used to disable audit.
* On Darwin, a NULL path argument is also used to disable audit.
*/
if (uap->path == NULL)
return (EINVAL);