Lock process when copying fields from process structure so as to
get a consistent snapshot, as well as get consistent values (i.e., that p_comm is properly nul-terminated). Perforce CID: 98824 Obtained from: TrustedBSD Project
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=159415
@ -171,20 +171,19 @@ audit_record_ctor(void *mem, int size, void *arg, int flags)
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/*
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* Export the subject credential.
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*
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* XXXAUDIT: td_ucred access is OK without proc lock, but some other
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* fields here may require the proc lock.
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*/
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cru2x(td->td_ucred, &ar->k_ar.ar_subj_cred);
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ar->k_ar.ar_subj_ruid = td->td_ucred->cr_ruid;
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ar->k_ar.ar_subj_rgid = td->td_ucred->cr_rgid;
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ar->k_ar.ar_subj_egid = td->td_ucred->cr_groups[0];
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PROC_LOCK(td->td_proc);
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ar->k_ar.ar_subj_auid = td->td_proc->p_au->ai_auid;
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ar->k_ar.ar_subj_asid = td->td_proc->p_au->ai_asid;
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ar->k_ar.ar_subj_pid = td->td_proc->p_pid;
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ar->k_ar.ar_subj_amask = td->td_proc->p_au->ai_mask;
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ar->k_ar.ar_subj_term = td->td_proc->p_au->ai_termid;
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bcopy(td->td_proc->p_comm, ar->k_ar.ar_subj_comm, MAXCOMLEN);
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PROC_UNLOCK(td->td_proc);
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return (0);
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}
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