minix3/servers/is/dmp_kernel.c

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2020-02-21 00:59:27 +05:30
/* Debugging dump procedures for the kernel. */
#include "inc.h"
#include <minix/timers.h>
#include <assert.h>
#include <machine/interrupt.h>
#include <minix/endpoint.h>
#include <minix/sysutil.h>
#include <minix/sys_config.h>
#include "kernel/const.h"
#include "kernel/config.h"
#include "kernel/debug.h"
#include "kernel/type.h"
#include "kernel/proc.h"
#include "kernel/ipc.h"
#define LINES 22
#define PRINTRTS(rp) { \
char *procname = ""; \
printf(" %s", p_rts_flags_str(rp->p_rts_flags)); \
if (rp->p_rts_flags & RTS_SENDING) \
procname = proc_name(_ENDPOINT_P(rp->p_sendto_e)); \
else if (rp->p_rts_flags & RTS_RECEIVING) \
procname = proc_name(_ENDPOINT_P(rp->p_getfrom_e)); \
printf(" %-7.7s", procname); \
}
static int pagelines;
#define PROCLOOP(rp, oldrp) \
pagelines = 0; \
for (rp = oldrp; rp < END_PROC_ADDR; rp++) { \
oldrp = BEG_PROC_ADDR; \
if (isemptyp(rp)) continue; \
if (++pagelines >= LINES) { oldrp = rp; printf("--more--\n"); break; }\
if (proc_nr(rp) == IDLE) printf("(%2d) ", proc_nr(rp)); \
else if (proc_nr(rp) < 0) printf("[%2d] ", proc_nr(rp)); \
else printf(" %2d ", proc_nr(rp));
#define click_to_round_k(n) \
((unsigned) ((((unsigned long) (n) << CLICK_SHIFT) + 512) / 1024))
/* Declare some local dump procedures. */
static char *proc_name(int proc_nr);
static char *s_traps_str(int flags);
static char *s_flags_str(int flags);
static char *p_rts_flags_str(int flags);
/* Some global data that is shared among several dumping procedures.
* Note that the process table copy has the same name as in the kernel
* so that most macros and definitions from proc.h also apply here.
*/
struct proc proc[NR_TASKS + NR_PROCS];
struct priv priv[NR_SYS_PROCS];
struct boot_image image[NR_BOOT_PROCS];
extern struct minix_kerninfo *_minix_kerninfo;
/*===========================================================================*
* kmessages_dmp *
*===========================================================================*/
void kmessages_dmp()
{
struct kmessages *kmess; /* get copy of kernel messages */
static char print_buf[_KMESS_BUF_SIZE+1]; /* this one is used to print */
int start; /* calculate start of messages */
int r;
int size;
assert(_minix_kerninfo);
kmess = _minix_kerninfo->kmessages;
/* Try to print the kernel messages. First determine start and copy the
* buffer into a print-buffer. This is done because the messages in the
* copy may wrap (the kernel buffer is circular).
*/
start = ((kmess->km_next + _KMESS_BUF_SIZE) - kmess->km_size) % _KMESS_BUF_SIZE;
r = 0;
size = kmess->km_size;
while (size > 0) {
print_buf[r] = kmess->km_buf[(start+r) % _KMESS_BUF_SIZE];
r ++;
size--;
}
print_buf[r] = 0; /* make sure it terminates */
printf("Dump of all messages generated by the kernel.\n\n");
printf("%s", print_buf); /* print the messages */
}
/*===========================================================================*
* monparams_dmp *
*===========================================================================*/
void monparams_dmp()
{
char val[MULTIBOOT_PARAM_BUF_SIZE];
char *e;
int r;
/* Try to get a copy of the boot monitor parameters. */
if ((r = sys_getmonparams(val, sizeof(val))) != OK) {
printf("IS: warning: couldn't get copy of monitor params: %d\n", r);
return;
}
/* Append new lines to the result. */
e = val;
do {
e += strlen(e);
*e++ = '\n';
} while (*e != 0);
/* Finally, print the result. */
printf("Dump of kernel environment strings set by boot monitor.\n");
printf("\n%s\n", val);
}
/*===========================================================================*
* irqtab_dmp *
*===========================================================================*/
void irqtab_dmp()
{
int i,r;
struct irq_hook irq_hooks[NR_IRQ_HOOKS];
int irq_actids[NR_IRQ_VECTORS];
struct irq_hook *e; /* irq tab entry */
if ((r = sys_getirqhooks(irq_hooks)) != OK) {
printf("IS: warning: couldn't get copy of irq hooks: %d\n", r);
return;
}
if ((r = sys_getirqactids(irq_actids)) != OK) {
printf("IS: warning: couldn't get copy of irq mask: %d\n", r);
return;
}
#if 0
printf("irq_actids:");
for (i= 0; i<NR_IRQ_VECTORS; i++)
printf(" [%d] = 0x%08x", i, irq_actids[i]);
printf("\n");
#endif
printf("IRQ policies dump shows use of kernel's IRQ hooks.\n");
printf("-h.id- -proc.nr- -irq nr- -policy- -notify id- -masked-\n");
for (i=0; i<NR_IRQ_HOOKS; i++) {
e = &irq_hooks[i];
printf("%3d", i);
if (e->proc_nr_e==NONE) {
printf(" <unused>\n");
continue;
}
printf("%10d ", e->proc_nr_e);
printf(" (%02d) ", e->irq);
printf(" %s", (e->policy & IRQ_REENABLE) ? "reenable" : " - ");
printf(" %4lu", e->notify_id);
if (irq_actids[e->irq] & e->id)
printf(" masked");
printf("\n");
}
printf("\n");
}
/*===========================================================================*
* image_dmp *
*===========================================================================*/
void image_dmp()
{
int m, r;
struct boot_image *ip;
if ((r = sys_getimage(image)) != OK) {
printf("IS: warning: couldn't get copy of image table: %d\n", r);
return;
}
printf("Image table dump showing all processes included in system image.\n");
printf("---name- -nr- flags -stack-\n");
for (m=0; m<NR_BOOT_PROCS; m++) {
ip = &image[m];
printf("%8s %4d\n", ip->proc_name, ip->proc_nr);
}
printf("\n");
}
/*===========================================================================*
* kenv_dmp *
*===========================================================================*/
void kenv_dmp()
{
struct kinfo kinfo;
struct machine machine;
int r;
if ((r = sys_getkinfo(&kinfo)) != OK) {
printf("IS: warning: couldn't get copy of kernel info struct: %d\n", r);
return;
}
if ((r = sys_getmachine(&machine)) != OK) {
printf("IS: warning: couldn't get copy of kernel machine struct: %d\n", r);
return;
}
printf("Dump of kinfo structure.\n\n");
printf("Kernel info structure:\n");
printf("- nr_procs: %3u\n", kinfo.nr_procs);
printf("- nr_tasks: %3u\n", kinfo.nr_tasks);
printf("- release: %.6s\n", kinfo.release);
printf("- version: %.6s\n", kinfo.version);
printf("\n");
}
/*===========================================================================*
* s_flags_str *
*===========================================================================*/
static char *s_flags_str(int flags)
{
static char str[10];
str[0] = (flags & PREEMPTIBLE) ? 'P' : '-';
str[1] = (flags & BILLABLE) ? 'B' : '-';
str[2] = (flags & DYN_PRIV_ID) ? 'D' : '-';
str[3] = (flags & SYS_PROC) ? 'S' : '-';
str[4] = (flags & CHECK_IO_PORT) ? 'I' : '-';
str[5] = (flags & CHECK_IRQ) ? 'Q' : '-';
str[6] = (flags & CHECK_MEM) ? 'M' : '-';
str[7] = '\0';
return str;
}
/*===========================================================================*
* s_traps_str *
*===========================================================================*/
static char *s_traps_str(int flags)
{
static char str[10];
str[0] = (flags & (1 << SEND)) ? 'S' : '-';
str[1] = (flags & (1 << SENDA)) ? 'A' : '-';
str[2] = (flags & (1 << RECEIVE)) ? 'R' : '-';
str[3] = (flags & (1 << SENDREC)) ? 'B' : '-';
str[4] = (flags & (1 << NOTIFY)) ? 'N' : '-';
str[5] = '\0';
return str;
}
/*===========================================================================*
* privileges_dmp *
*===========================================================================*/
void privileges_dmp()
{
register struct proc *rp;
static struct proc *oldrp = BEG_PROC_ADDR;
register struct priv *sp;
int r, i;
/* First obtain a fresh copy of the current process and system table. */
if ((r = sys_getprivtab(priv)) != OK) {
printf("IS: warning: couldn't get copy of system privileges table: %d\n", r);
return;
}
if ((r = sys_getproctab(proc)) != OK) {
printf("IS: warning: couldn't get copy of process table: %d\n", r);
return;
}
printf("-nr- -id- -name-- -flags- traps grants -ipc_to--"
" -kernel calls-\n");
PROCLOOP(rp, oldrp)
r = -1;
for (sp = &priv[0]; sp < &priv[NR_SYS_PROCS]; sp++)
if (sp->s_proc_nr == rp->p_nr) { r ++; break; }
if (r == -1 && !isemptyp(rp)) {
sp = &priv[USER_PRIV_ID];
}
printf("(%02u) %-7.7s %s %s %6d",
sp->s_id, rp->p_name,
s_flags_str(sp->s_flags), s_traps_str(sp->s_trap_mask),
sp->s_grant_entries);
for (i=0; i < NR_SYS_PROCS; i += BITCHUNK_BITS) {
printf(" %08x", get_sys_bits(sp->s_ipc_to, i));
}
printf(" ");
for (i=0; i < NR_SYS_CALLS; i += BITCHUNK_BITS) {
printf(" %08x", sp->s_k_call_mask[i/BITCHUNK_BITS]);
}
printf("\n");
}
}
/*===========================================================================*
* p_rts_flags_str *
*===========================================================================*/
static char *p_rts_flags_str(int flags)
{
static char str[10];
str[0] = (flags & RTS_PROC_STOP) ? 's' : '-';
str[1] = (flags & RTS_SENDING) ? 'S' : '-';
str[2] = (flags & RTS_RECEIVING) ? 'R' : '-';
str[3] = (flags & RTS_SIGNALED) ? 'I' : '-';
str[4] = (flags & RTS_SIG_PENDING) ? 'P' : '-';
str[5] = (flags & RTS_P_STOP) ? 'T' : '-';
str[6] = (flags & RTS_NO_PRIV) ? 'p' : '-';
str[7] = '\0';
return str;
}
/*===========================================================================*
* proctab_dmp *
*===========================================================================*/
#if defined(__i386__)
void proctab_dmp(void)
{
/* Proc table dump */
register struct proc *rp;
static struct proc *oldrp = BEG_PROC_ADDR;
int r;
/* First obtain a fresh copy of the current process table. */
if ((r = sys_getproctab(proc)) != OK) {
printf("IS: warning: couldn't get copy of process table: %d\n", r);
return;
}
printf("\n-nr-----gen---endpoint-name--- -prior-quant- -user----sys-rtsflags-from/to-\n");
PROCLOOP(rp, oldrp)
printf(" %5d %10d ", _ENDPOINT_G(rp->p_endpoint), rp->p_endpoint);
printf("%-8.8s %5u %5u %6lu %6lu ",
rp->p_name,
rp->p_priority,
rp->p_quantum_size_ms,
rp->p_user_time, rp->p_sys_time);
PRINTRTS(rp);
printf("\n");
}
}
#endif /* defined(__i386__) */
#if defined(__arm__)
void proctab_dmp(void)
{
/* LSC FIXME: Not implemented for arm */
}
#endif /* defined(__arm__) */
/*===========================================================================*
* procstack_dmp *
*===========================================================================*/
void procstack_dmp()
{
/* Proc table dump, with stack */
register struct proc *rp;
static struct proc *oldrp = BEG_PROC_ADDR;
int r;
/* First obtain a fresh copy of the current process table. */
if ((r = sys_getproctab(proc)) != OK) {
printf("IS: warning: couldn't get copy of process table: %d\n", r);
return;
}
printf("\n-nr-rts flags-- --stack--\n");
PROCLOOP(rp, oldrp)
PRINTRTS(rp);
printf("\n"); pagelines++;
sys_diagctl_stacktrace(rp->p_endpoint);
}
}
/*===========================================================================*
* proc_name *
*===========================================================================*/
static char *proc_name(proc_nr)
int proc_nr;
{
struct proc *p;
if (proc_nr == ANY) return "ANY";
if (proc_nr == NONE) return "NONE"; /* bogus */
if (proc_nr < -NR_TASKS || proc_nr >= NR_PROCS) return "BOGUS";
p = proc_addr(proc_nr);
if (isemptyp(p)) return "EMPTY"; /* bogus */
return p->p_name;
}