minix/lib/syslib/sys_sysctl.c


#include "syslib.h"

PUBLIC int sys_sysctl(int code, char *arg1, int arg2)
{
  message m;

  m.SYSCTL_CODE = code;
  m.SYSCTL_ARG1 = arg1;
  m.SYSCTL_ARG2 = arg2;

  return(_taskcall(SYSTASK, SYS_SYSCTL, &m));

}

PUBLIC int sys_sysctl_stacktrace(endpoint_t ep)
{
  return sys_sysctl(SYSCTL_CODE_STACKTRACE, NULL, ep);
}
. new kernel call sysctl for generic unprivileged system operations; now used for printing diagnostic messages through the kernel message buffer. this lets processes print diagnostics without sending messages to tty and log directly, simplifying the message protocol a lot and reducing difficulties with deadlocks and other situations in which diagnostics are blackholed (e.g. grants don't work). this makes DIAGNOSTICS(_S), ASYN_DIAGNOSTICS and DIAG_REPL obsolete, although tty and log still accept the codes for 'old' binaries. This also simplifies diagnostics in several servers and drivers - only tty needs its own kputc() now. . simplifications in vfs, and some effort to get the vnode references right (consistent) even during shutdown. m_mounted_on is now NULL for root filesystems (!) (the original and new root), a less awkward special case than 'm_mounted_on == m_root_node'. root now has exactly one reference, to root, if no files are open, just like all other filesystems. m_driver_e is unused. 2009-01-26 18:43:59 +01:00
			`#include "syslib.h"`

			`PUBLIC int sys_sysctl(int code, char *arg1, int arg2)`
			`{`
			`message m;`

			`m.SYSCTL_CODE = code;`
			`m.SYSCTL_ARG1 = arg1;`
			`m.SYSCTL_ARG2 = arg2;`

			`return(_taskcall(SYSTASK, SYS_SYSCTL, &m));`

			`}`
moved stacktrace to sysctl, as vmctl is very privileged so can't be used outside VM. IS code cleanup. added stacktrace feature to IS. 2009-01-27 13:54:33 +01:00
			`PUBLIC int sys_sysctl_stacktrace(endpoint_t ep)`
			`{`
			`return sys_sysctl(SYSCTL_CODE_STACKTRACE, NULL, ep);`
			`}`