Change Details

compile kernel with options SYSCTL_DEBUG and run: ``` % cat dumpall.c #include <sys/types.h> #include <sys/sysctl.h> #include <err.h> #include <stddef.h> int main() { int oid[2]; oid[0] = CTL_SYSCTL; oid[1] = CTL_SYSCTL_DEBUG; if (sysctl(oid, 2, NULL, NULL, NULL, 0) != 0) err(1, "sysctl()"); } ```

compile kernel with options SYSCTL_DEBUG and run: ``` sysctl sysctl.debug ``` observe kern.msgbuf

compile kernel with options SYSCTL_DEBUG and run: ``` % cat dumpall.csysctl sysctl.debug #include <sys/types.h> #include <sys/sysctl.h> #include <err.h> #include <stddef.h> int main() { int oid[2]; oid[0] = CTL_SYSCTL; oid[1] = CTL_SYSCTL_DEBUG; if (sysctl(oid, 2, NULL, NULL, NULL, 0) != 0) err(1, "sysctl()"); } ``` observe kern.msgbuf