Date: Sun, 3 Jul 2011 23:54:25 -0700 (PDT) From: exorcistkiller <exorcistkiller@gmail.com> To: freebsd-hackers@freebsd.org Subject: priv_check() question Message-ID: <1309762465080-4549149.post@n5.nabble.com>
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Hi! I am taking a FreeBSD course this summer and I'm doing a homework. A new system call uidkill() is to be added. uidkill(uid_t uid, int signum) sends signal specified by signum to all processes owned by uid, excluding the calling process itself. I'm almost done, however I get stuck with priv_check(). If the calling process is trying to send signal to processes owned by others, permission should be denied. My implementation simply uses an if (p->p_ucred->cr_uid == ksi.ksi_uid) to deny it, however priv_check() is required. My question is: what privilege a process should have to send signal to processes owned by others? PRIV_SIGNAL_DIFFCRED? -- View this message in context: http://freebsd.1045724.n5.nabble.com/priv-check-question-tp4549149p4549149.html Sent from the freebsd-hackers mailing list archive at Nabble.com.
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