227 lines
6 KiB
C
227 lines
6 KiB
C
/* The kernel call implemented in this file:
|
|
* m_type: SYS_GETINFO
|
|
*
|
|
* The parameters for this kernel call are:
|
|
* m1_i3: I_REQUEST (what info to get)
|
|
* 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_E (second length or process nr)
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <minix/endpoint.h>
|
|
|
|
#include "kernel/system.h"
|
|
|
|
|
|
#if USE_GETINFO
|
|
|
|
#include <minix/u64.h>
|
|
|
|
PRIVATE void update_idle_time(void)
|
|
{
|
|
int i;
|
|
struct proc * idl = proc_addr(IDLE);
|
|
|
|
idl->p_cycles = make64(0, 0);
|
|
|
|
for (i = 0; i < CONFIG_MAX_CPUS ; i++) {
|
|
idl->p_cycles = add64(idl->p_cycles,
|
|
get_cpu_var(i, idle_proc).p_cycles);
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* do_getinfo *
|
|
*===========================================================================*/
|
|
PUBLIC int do_getinfo(struct proc * caller, message * m_ptr)
|
|
{
|
|
/* Request system information to be copied to caller's address space. This
|
|
* call simply copies entire data structures to the caller.
|
|
*/
|
|
size_t length;
|
|
vir_bytes src_vir;
|
|
int nr_e, nr, r;
|
|
int wipe_rnd_bin = -1;
|
|
struct proc *p;
|
|
#if !defined(__ELF__)
|
|
struct exec e_hdr;
|
|
#endif
|
|
|
|
/* Set source address and length based on request type. */
|
|
switch (m_ptr->I_REQUEST) {
|
|
case GET_MACHINE: {
|
|
length = sizeof(struct machine);
|
|
src_vir = (vir_bytes) &machine;
|
|
break;
|
|
}
|
|
case GET_KINFO: {
|
|
length = sizeof(struct kinfo);
|
|
src_vir = (vir_bytes) &kinfo;
|
|
break;
|
|
}
|
|
case GET_LOADINFO: {
|
|
length = sizeof(struct loadinfo);
|
|
src_vir = (vir_bytes) &kloadinfo;
|
|
break;
|
|
}
|
|
case GET_CPUINFO: {
|
|
length = sizeof(cpu_info);
|
|
src_vir = (vir_bytes) &cpu_info;
|
|
break;
|
|
}
|
|
case GET_HZ: {
|
|
length = sizeof(system_hz);
|
|
src_vir = (vir_bytes) &system_hz;
|
|
break;
|
|
}
|
|
case GET_IMAGE: {
|
|
length = sizeof(struct boot_image) * NR_BOOT_PROCS;
|
|
src_vir = (vir_bytes) image;
|
|
break;
|
|
}
|
|
case GET_IRQHOOKS: {
|
|
length = sizeof(struct irq_hook) * NR_IRQ_HOOKS;
|
|
src_vir = (vir_bytes) irq_hooks;
|
|
break;
|
|
}
|
|
case GET_PROCTAB: {
|
|
update_idle_time();
|
|
length = sizeof(struct proc) * (NR_PROCS + NR_TASKS);
|
|
src_vir = (vir_bytes) proc;
|
|
break;
|
|
}
|
|
case GET_PRIVTAB: {
|
|
length = sizeof(struct priv) * (NR_SYS_PROCS);
|
|
src_vir = (vir_bytes) priv;
|
|
break;
|
|
}
|
|
case GET_PROC: {
|
|
nr_e = (m_ptr->I_VAL_LEN2_E == SELF) ?
|
|
caller->p_endpoint : m_ptr->I_VAL_LEN2_E;
|
|
if(!isokendpt(nr_e, &nr)) return EINVAL; /* validate request */
|
|
length = sizeof(struct proc);
|
|
src_vir = (vir_bytes) proc_addr(nr);
|
|
break;
|
|
}
|
|
case GET_PRIV: {
|
|
nr_e = (m_ptr->I_VAL_LEN2_E == SELF) ?
|
|
caller->p_endpoint : m_ptr->I_VAL_LEN2_E;
|
|
if(!isokendpt(nr_e, &nr)) return EINVAL; /* validate request */
|
|
length = sizeof(struct priv);
|
|
src_vir = (vir_bytes) priv_addr(nr_to_id(nr));
|
|
break;
|
|
}
|
|
case GET_REGS: {
|
|
nr_e = (m_ptr->I_VAL_LEN2_E == SELF) ?
|
|
caller->p_endpoint : m_ptr->I_VAL_LEN2_E;
|
|
if(!isokendpt(nr_e, &nr)) return EINVAL; /* validate request */
|
|
p = proc_addr(nr);
|
|
length = sizeof(p->p_reg);
|
|
src_vir = (vir_bytes) &p->p_reg;
|
|
break;
|
|
}
|
|
case GET_WHOAMI: {
|
|
int len;
|
|
/* GET_WHOAMI uses m3 and only uses the message contents for info. */
|
|
m_ptr->GIWHO_EP = caller->p_endpoint;
|
|
len = MIN(sizeof(m_ptr->GIWHO_NAME), sizeof(caller->p_name))-1;
|
|
strncpy(m_ptr->GIWHO_NAME, caller->p_name, len);
|
|
m_ptr->GIWHO_NAME[len] = '\0';
|
|
m_ptr->GIWHO_PRIVFLAGS = priv(caller)->s_flags;
|
|
return OK;
|
|
}
|
|
case GET_MONPARAMS: {
|
|
src_vir = (vir_bytes) params_buffer;
|
|
length = sizeof(params_buffer);
|
|
break;
|
|
}
|
|
case GET_RANDOMNESS: {
|
|
static struct k_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(copy);
|
|
src_vir = (vir_bytes) ©
|
|
break;
|
|
}
|
|
case GET_RANDOMNESS_BIN: {
|
|
int bin = m_ptr->I_VAL_LEN2_E;
|
|
|
|
if(bin < 0 || bin >= RANDOM_SOURCES) {
|
|
printf("SYSTEM: GET_RANDOMNESS_BIN: %d out of range\n", bin);
|
|
return EINVAL;
|
|
}
|
|
|
|
if(krandom.bin[bin].r_size < RANDOM_ELEMENTS)
|
|
return ENOENT;
|
|
|
|
length = sizeof(krandom.bin[bin]);
|
|
src_vir = (vir_bytes) &krandom.bin[bin];
|
|
|
|
wipe_rnd_bin = bin;
|
|
|
|
break;
|
|
}
|
|
case GET_KMESSAGES: {
|
|
length = sizeof(struct kmessages);
|
|
src_vir = (vir_bytes) &kmess;
|
|
break;
|
|
}
|
|
case GET_IRQACTIDS: {
|
|
length = sizeof(irq_actids);
|
|
src_vir = (vir_bytes) irq_actids;
|
|
break;
|
|
}
|
|
case GET_IDLETSC: {
|
|
struct proc * idl;
|
|
|
|
idl = proc_addr(IDLE);
|
|
length = sizeof(idl->p_cycles);
|
|
src_vir = (vir_bytes) &idl->p_cycles;
|
|
break;
|
|
}
|
|
#if !defined(__ELF__)
|
|
case GET_AOUTHEADER: {
|
|
int hdrindex, index = m_ptr->I_VAL_LEN2_E;
|
|
if(index < 0 || index >= NR_BOOT_PROCS) {
|
|
return EINVAL;
|
|
}
|
|
if (iskerneln(_ENDPOINT_P(image[index].endpoint))) {
|
|
hdrindex = 0;
|
|
} else {
|
|
hdrindex = 1 + index-NR_TASKS;
|
|
}
|
|
arch_get_aout_headers(hdrindex, &e_hdr);
|
|
length = sizeof(e_hdr);
|
|
src_vir = (vir_bytes) &e_hdr;
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
printf("do_getinfo: invalid request %d\n", m_ptr->I_REQUEST);
|
|
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);
|
|
r = data_copy_vmcheck(caller, KERNEL, src_vir, caller->p_endpoint,
|
|
(vir_bytes) m_ptr->I_VAL_PTR, length);
|
|
|
|
if(r != OK) return r;
|
|
|
|
if(wipe_rnd_bin >= 0 && wipe_rnd_bin < RANDOM_SOURCES) {
|
|
krandom.bin[wipe_rnd_bin].r_size = 0;
|
|
krandom.bin[wipe_rnd_bin].r_next = 0;
|
|
}
|
|
|
|
return(OK);
|
|
}
|
|
|
|
#endif /* USE_GETINFO */
|
|
|