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adjkerntz(8): detect extra jailed invokation to keep logs clean
It may happen that "adjkerntz -a" called from jailed root crontab. In that case it spams logs with a line: sysctl(set: "machdep.wall_cmos_clock"): Operation not permitted Be silent in that case. MFC after: 1 month
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b4bdc8f925
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@ -46,6 +46,7 @@ __FBSDID("$FreeBSD$");
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* with Garrett Wollman and Bruce Evans fixes.
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* with Garrett Wollman and Bruce Evans fixes.
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*
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*
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*/
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <signal.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdlib.h>
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@ -159,6 +160,12 @@ main(int argc, char *argv[])
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len = sizeof(kern_offset);
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len = sizeof(kern_offset);
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if (sysctlbyname("machdep.adjkerntz", &kern_offset, &len, NULL, 0) == -1) {
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if (sysctlbyname("machdep.adjkerntz", &kern_offset, &len, NULL, 0) == -1) {
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if (errno == EPERM && !init && geteuid() == 0)
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/*
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* Surplus call from jailed root crontab.
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* Avoid spamming logs.
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*/
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return 1;
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syslog(LOG_ERR, "sysctl(\"machdep.adjkerntz\"): %m");
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syslog(LOG_ERR, "sysctl(\"machdep.adjkerntz\"): %m");
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return 1;
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return 1;
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}
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}
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