FreeBSD sysctl_root rejects a write to a read-only node with EPERM before the node handler checks the MIB length, so a write with a short or long kern.proc.pathname MIB fails with EPERM. sysctlbyname for kern.proc.pathname now goes through sysctl with its 3-component MIB so it follows the same order.
The Python in PS5MC (PPSA99420) reads sysconf(_SC_CLK_TCK) while
importing its posix module and failed with "cannot read
ticks_per_second". It returns FreeBSD's CLK_TCK, 128.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ScreenTester5 (PPSA69420) stops at start-up on the unresolved sysctlbyname
import and also imports sysctl. hw.ncpu (CTL_HW.HW_NCPU) reports the same
processor count as sysconf(_SC_NPROCESSORS_ONLN). Other names and MIBs throw.
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