f0594a9e6d
sys_privctl() call to dynamically start servers and drivers. - Shutdown sequence slightly adjusted: called as watchdog timer to let the busy sys_abort() call from the PM return first. - Changed umap_bios() to have more restrictive check: BIOS memory is now allowed in BIOS_MEM_BEGIN to END (interrupt vectors) and BASE_MEM_TOP to UPPER_MEM_END. Hopefully this keeps QEMU and Bochs happy.
130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
/* The system call implemented in this file:
|
|
* m_type: SYS_GETINFO
|
|
*
|
|
* The parameters for this system call are:
|
|
* m1_i3: I_REQUEST (what info to get)
|
|
* m1_i4: I_PROC_NR (process to store value at)
|
|
* m1_p1: I_VAL_PTR (where to put it)
|
|
* m1_i1: I_VAL_LEN (maximum length expected, optional)
|
|
* m1_p2: I_VAL_PTR2 (second, optional pointer)
|
|
* m1_i2: I_VAL_LEN2 (second length or process nr)
|
|
*
|
|
* Author:
|
|
* Jorrit N. Herder <jnherder@cs.vu.nl>
|
|
*/
|
|
|
|
#include "../system.h"
|
|
|
|
#if USE_GETINFO
|
|
|
|
/*===========================================================================*
|
|
* do_getinfo *
|
|
*===========================================================================*/
|
|
PUBLIC int do_getinfo(m_ptr)
|
|
register message *m_ptr; /* pointer to request message */
|
|
{
|
|
/* Request system information to be copied to caller's address space. This
|
|
* call simply copies entire data structures to the caller.
|
|
*/
|
|
size_t length;
|
|
phys_bytes src_phys;
|
|
phys_bytes dst_phys;
|
|
int proc_nr, nr;
|
|
|
|
/* Set source address and length based on request type. */
|
|
switch (m_ptr->I_REQUEST) {
|
|
case GET_MACHINE: {
|
|
length = sizeof(struct machine);
|
|
src_phys = vir2phys(&machine);
|
|
break;
|
|
}
|
|
case GET_KINFO: {
|
|
length = sizeof(struct kinfo);
|
|
src_phys = vir2phys(&kinfo);
|
|
break;
|
|
}
|
|
case GET_IMAGE: {
|
|
length = sizeof(struct system_image) * NR_BOOT_PROCS;
|
|
src_phys = vir2phys(image);
|
|
break;
|
|
}
|
|
case GET_IRQHOOKS: {
|
|
length = sizeof(struct irq_hook) * NR_IRQ_HOOKS;
|
|
src_phys = vir2phys(irq_hooks);
|
|
break;
|
|
}
|
|
case GET_SCHEDINFO: {
|
|
/* This is slightly complicated because we need two data structures
|
|
* at once, otherwise the scheduling information may be incorrect.
|
|
* Copy the queue heads and fall through to copy the process table.
|
|
*/
|
|
length = sizeof(struct proc *) * NR_SCHED_QUEUES;
|
|
src_phys = vir2phys(rdy_head);
|
|
dst_phys = numap_local(m_ptr->m_source, (vir_bytes) m_ptr->I_VAL_PTR2,
|
|
length);
|
|
if (src_phys == 0 || dst_phys == 0) return(EFAULT);
|
|
phys_copy(src_phys, dst_phys, length);
|
|
/* fall through */
|
|
}
|
|
case GET_PROCTAB: {
|
|
length = sizeof(struct proc) * (NR_PROCS + NR_TASKS);
|
|
src_phys = vir2phys(proc);
|
|
break;
|
|
}
|
|
case GET_PRIVTAB: {
|
|
length = sizeof(struct priv) * (NR_SYS_PROCS);
|
|
src_phys = vir2phys(priv);
|
|
break;
|
|
}
|
|
case GET_PROC: {
|
|
nr = (m_ptr->I_VAL_LEN2 == SELF) ? m_ptr->m_source : m_ptr->I_VAL_LEN2;
|
|
if (! isokprocn(nr)) return(EINVAL); /* validate request */
|
|
length = sizeof(struct proc);
|
|
src_phys = vir2phys(proc_addr(nr));
|
|
break;
|
|
}
|
|
case GET_MONPARAMS: {
|
|
src_phys = kinfo.params_base; /* already is a physical */
|
|
length = kinfo.params_size;
|
|
break;
|
|
}
|
|
case GET_RANDOMNESS: {
|
|
static struct randomness copy; /* copy to keep counters */
|
|
int i;
|
|
|
|
copy = krandom;
|
|
for (i= 0; i<RANDOM_SOURCES; i++) {
|
|
krandom.bin[i].r_size = 0; /* invalidate random data */
|
|
krandom.bin[i].r_next = 0;
|
|
}
|
|
length = sizeof(struct randomness);
|
|
src_phys = vir2phys(©);
|
|
break;
|
|
}
|
|
case GET_KMESSAGES: {
|
|
length = sizeof(struct kmessages);
|
|
src_phys = vir2phys(&kmess);
|
|
break;
|
|
}
|
|
#if DEBUG_TIME_LOCKS
|
|
case GET_LOCKTIMING: {
|
|
length = sizeof(timingdata);
|
|
src_phys = vir2phys(timingdata);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
return(EINVAL);
|
|
}
|
|
|
|
/* Try to make the actual copy for the requested data. */
|
|
if (m_ptr->I_VAL_LEN > 0 && length > m_ptr->I_VAL_LEN) return (E2BIG);
|
|
proc_nr = m_ptr->m_source; /* only caller can request copy */
|
|
dst_phys = numap_local(proc_nr, (vir_bytes) m_ptr->I_VAL_PTR, length);
|
|
if (src_phys == 0 || dst_phys == 0) return(EFAULT);
|
|
phys_copy(src_phys, dst_phys, length);
|
|
return(OK);
|
|
}
|
|
|
|
#endif /* USE_GETINFO */
|
|
|