Date: Mon, 1 Mar 2010 02:15:41 +0300 From: Subbsd <subbsd@gmail.com> To: freebsd-current@freebsd.org Subject: check for jailed environment for adjkerntz Message-ID: <8237b2241002281515q5e953a48l4ac8a981fed407ab@mail.gmail.com>
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jail with "complete" type have standard crontab a file of tasks. However not
all standard task are adapted for work in jail an environment. For example
adjkerntz which generates
adjkerntz [46733]: sysctl (set: "machdep.wall_cmos_clock"): Operation not
permitted
I suggest to give adjkerntz concept about jail in which to it it is not
necessary to work:
--- adjkerntz.c-orig 2010-03-01 01:53:01.000000000 +0300
+++ adjkerntz.c 2010-03-01 02:03:45.000000000 +0300
@@ -80,7 +80,7 @@
struct tm local;
struct timeval tv, *stv;
struct timezone tz, *stz;
- int kern_offset, wall_clock, disrtcset;
+ int kern_offset, wall_clock, disrtcset, jailed;
size_t len;
/* Avoid time_t here, can be unsigned long or worse */
long offset, localsec, diff;
@@ -118,6 +118,16 @@
if (init)
sleep_mode = True;
+ len = sizeof(jailed);
+ if (sysctlbyname("security.jail.jailed", &jailed, &len, NULL, 0) ==
-1) {
+ syslog(LOG_ERR, "sysctl(\"security.jail.jailed\"): %m");
+ return 1;
+ }
+ if (jailed!=0) {
+ //not for jail
+ return 1;
+ }
+
sigemptyset(&mask);
sigemptyset(&emask);
sigaddset(&mask, SIGTERM);
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