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NetBSD/sys/kern/subr_userconf.c

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/* $NetBSD: subr_userconf.c,v 1.18 2005/12/11 12:24:30 christos Exp $ */
/*
* Copyright (c) 1996 Mats O Jansson <moj@stacken.kth.se>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mats O Jansson.
* 4. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* OpenBSD: subr_userconf.c,v 1.19 2000/01/08 23:23:37 d Exp
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: subr_userconf.c,v 1.18 2005/12/11 12:24:30 christos Exp $");
#include "opt_userconf.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/time.h>
#include <dev/cons.h>
extern struct cfdata cfdata[];
static int userconf_base = 16; /* Base for "large" numbers */
static int userconf_maxdev = -1; /* # of used device slots */
static int userconf_totdev = -1; /* # of device slots */
#if 0
static int userconf_maxlocnames = -1; /* # of locnames */
#endif
static int userconf_cnt = -1; /* Line counter for ... */
static int userconf_lines = 12; /* ... # of lines per page */
static int userconf_histlen = 0;
static int userconf_histcur = 0;
static char userconf_history[1024];
static int userconf_histsz = sizeof(userconf_history);
static char userconf_argbuf[40]; /* Additional input */
static char userconf_cmdbuf[40]; /* Command line */
static char userconf_histbuf[40];
static int getsn(char *, int);
#define UC_CHANGE 'c'
#define UC_DISABLE 'd'
#define UC_ENABLE 'e'
#define UC_FIND 'f'
#define UC_SHOW 's'
static const char *userconf_cmds[] = {
"base", "b",
"change", "c",
"disable", "d",
"enable", "e",
"exit", "q",
"find", "f",
"help", "h",
"list", "l",
"lines", "L",
"quit", "q",
"?", "h",
"", "",
};
static void
userconf_init(void)
{
int i;
struct cfdata *cf;
i = 0;
for (cf = cfdata; cf->cf_name; cf++)
i++;
userconf_maxdev = i - 1;
userconf_totdev = i - 1;
}
static int
userconf_more(void)
{
int quit = 0;
char c = '\0';
if (userconf_cnt != -1) {
if (userconf_cnt == userconf_lines) {
printf("-- more --");
c = cngetc();
userconf_cnt = 0;
printf("\r \r");
}
userconf_cnt++;
if (c == 'q' || c == 'Q')
quit = 1;
}
return (quit);
}
static void
userconf_hist_cmd(char cmd)
{
userconf_histcur = userconf_histlen;
if (userconf_histcur < userconf_histsz) {
userconf_history[userconf_histcur] = cmd;
userconf_histcur++;
}
}
static void
userconf_hist_int(int val)
{
snprintf(userconf_histbuf, sizeof(userconf_histbuf), " %d", val);
if ((userconf_histcur + strlen(userconf_histbuf)) < userconf_histsz) {
memcpy(&userconf_history[userconf_histcur],
userconf_histbuf,
strlen(userconf_histbuf));
userconf_histcur = userconf_histcur + strlen(userconf_histbuf);
}
}
static void
userconf_hist_eoc(void)
{
if (userconf_histcur < userconf_histsz) {
userconf_history[userconf_histcur] = '\n';
userconf_histcur++;
userconf_histlen = userconf_histcur;
}
}
static void
userconf_pnum(int val)
{
if (val > -2 && val < 16) {
printf("%d",val);
} else {
switch (userconf_base) {
case 8:
printf("0%o",val);
break;
case 10:
printf("%d",val);
break;
case 16:
default:
printf("0x%x",val);
break;
}
}
}
static void
userconf_pdevnam(short dev)
{
struct cfdata *cd;
cd = &cfdata[dev];
printf("%s", cd->cf_name);
switch (cd->cf_fstate) {
case FSTATE_NOTFOUND:
case FSTATE_DNOTFOUND:
printf("%d", cd->cf_unit);
break;
case FSTATE_FOUND:
printf("*FOUND*");
break;
case FSTATE_STAR:
case FSTATE_DSTAR:
printf("*");
break;
default:
printf("*UNKNOWN*");
break;
}
}
static void
userconf_pdev(short devno)
{
struct cfdata *cd;
const struct cfparent *cfp;
int *l;
const struct cfiattrdata *ia;
const struct cflocdesc *ld;
int nld, i;
if (devno > userconf_maxdev) {
printf("Unknown devno (max is %d)\n", userconf_maxdev);
return;
}
cd = &cfdata[devno];
printf("[%3d] ", devno);
userconf_pdevnam(devno);
printf(" at");
cfp = cd->cf_pspec;
if (cfp == NULL)
printf(" root");
else if (cfp->cfp_parent != NULL && cfp->cfp_unit != -1)
printf(" %s%d", cfp->cfp_parent, cfp->cfp_unit);
else
printf(" %s?", cfp->cfp_parent != NULL ? cfp->cfp_parent
: cfp->cfp_iattr);
switch (cd->cf_fstate) {
case FSTATE_NOTFOUND:
case FSTATE_FOUND:
case FSTATE_STAR:
break;
case FSTATE_DNOTFOUND:
case FSTATE_DSTAR:
printf(" disable");
break;
default:
printf(" ???");
break;
}
if (cfp) {
l = cd->cf_loc;
ia = cfiattr_lookup(cfp->cfp_iattr, 0);
KASSERT(ia);
ld = ia->ci_locdesc;
nld = ia->ci_loclen;
for (i = 0; i < nld; i++) {
printf(" %s ", ld[i].cld_name);
if (!ld[i].cld_defaultstr
|| (l[i] != ld[i].cld_default))
userconf_pnum(l[i]);
else
printf("?");
}
}
printf("\n");
}
static int
userconf_number(char *c, int *val)
{
u_int num = 0;
int neg = 0;
int base = 10;
if (*c == '-') {
neg = 1;
c++;
}
if (*c == '0') {
base = 8;
c++;
if (*c == 'x' || *c == 'X') {
base = 16;
c++;
}
}
while (*c != '\n' && *c != '\t' && *c != ' ' && *c != '\0') {
u_char cc = *c;
if (cc >= '0' && cc <= '9')
cc = cc - '0';
else if (cc >= 'a' && cc <= 'f')
cc = cc - 'a' + 10;
else if (cc >= 'A' && cc <= 'F')
cc = cc - 'A' + 10;
else
return (-1);
if (cc > base)
return (-1);
num = num * base + cc;
c++;
}
if (neg && num > INT_MAX) /* overflow */
return (1);
*val = neg ? - num : num;
return (0);
}
static int
userconf_device(char *cmd, int *len, short *unit, short *state)
{
short u = 0, s = FSTATE_FOUND;
int l = 0;
char *c;
c = cmd;
while (*c >= 'a' && *c <= 'z') {
l++;
c++;
}
if (*c == '*') {
s = FSTATE_STAR;
c++;
} else {
while (*c >= '0' && *c <= '9') {
s = FSTATE_NOTFOUND;
u = u*10 + *c - '0';
c++;
}
}
while (*c == ' ' || *c == '\t' || *c == '\n')
c++;
if (*c == '\0') {
*len = l;
*unit = u;
*state = s;
return(0);
}
return(-1);
}
static void
userconf_modify(const struct cflocdesc *item, int *val)
{
int ok = 0;
int a;
char *c;
while (!ok) {
printf("%s [", item->cld_name);
if (item->cld_defaultstr && (*val == item->cld_default))
printf("?");
else
userconf_pnum(*val);
printf("] ? ");
getsn(userconf_argbuf, sizeof(userconf_argbuf));
c = userconf_argbuf;
while (*c == ' ' || *c == '\t' || *c == '\n') c++;
if (*c != '\0') {
if (*c == '?') {
if (item->cld_defaultstr) {
*val = item->cld_default;
ok = 1;
} else
printf("No default\n");
} else if (userconf_number(c, &a) == 0) {
*val = a;
ok = 1;
} else {
printf("Unknown argument\n");
}
} else {
ok = 1;
}
}
}
static void
userconf_change(int devno)
{
struct cfdata *cd;
char c = '\0';
int *l;
int ln;
const struct cfiattrdata *ia;
const struct cflocdesc *ld;
int nld;
if (devno <= userconf_maxdev) {
userconf_pdev(devno);
while (c != 'y' && c != 'Y' && c != 'n' && c != 'N') {
printf("change (y/n) ?");
c = cngetc();
printf("\n");
}
if (c == 'y' || c == 'Y') {
/* XXX add cmd 'c' <devno> */
userconf_hist_cmd('c');
userconf_hist_int(devno);
cd = &cfdata[devno];
l = cd->cf_loc;
ia = cfiattr_lookup(cd->cf_pspec->cfp_iattr, 0);
KASSERT(ia);
ld = ia->ci_locdesc;
nld = ia->ci_loclen;
for (ln = 0; ln < nld; ln++)
{
userconf_modify(&ld[ln], l);
/* XXX add *l */
userconf_hist_int(*l);
l++;
}
printf("[%3d] ", devno);
userconf_pdevnam(devno);
printf(" changed\n");
userconf_pdev(devno);
/* XXX add eoc */
userconf_hist_eoc();
}
} else {
printf("Unknown devno (max is %d)\n", userconf_maxdev);
}
}
static void
userconf_disable(int devno)
{
int done = 0;
if (devno <= userconf_maxdev) {
switch (cfdata[devno].cf_fstate) {
case FSTATE_NOTFOUND:
cfdata[devno].cf_fstate = FSTATE_DNOTFOUND;
break;
case FSTATE_STAR:
cfdata[devno].cf_fstate = FSTATE_DSTAR;
break;
case FSTATE_DNOTFOUND:
case FSTATE_DSTAR:
done = 1;
break;
default:
printf("Error unknown state\n");
break;
}
printf("[%3d] ", devno);
userconf_pdevnam(devno);
if (done) {
printf(" already");
} else {
/* XXX add cmd 'd' <devno> eoc */
userconf_hist_cmd('d');
userconf_hist_int(devno);
userconf_hist_eoc();
}
printf(" disabled\n");
} else {
printf("Unknown devno (max is %d)\n", userconf_maxdev);
}
}
static void
userconf_enable(int devno)
{
int done = 0;
if (devno <= userconf_maxdev) {
switch (cfdata[devno].cf_fstate) {
case FSTATE_DNOTFOUND:
cfdata[devno].cf_fstate = FSTATE_NOTFOUND;
break;
case FSTATE_DSTAR:
cfdata[devno].cf_fstate = FSTATE_STAR;
break;
case FSTATE_NOTFOUND:
case FSTATE_STAR:
done = 1;
break;
default:
printf("Error unknown state\n");
break;
}
printf("[%3d] ", devno);
userconf_pdevnam(devno);
if (done) {
printf(" already");
} else {
/* XXX add cmd 'e' <devno> eoc */
userconf_hist_cmd('d');
userconf_hist_int(devno);
userconf_hist_eoc();
}
printf(" enabled\n");
} else {
printf("Unknown devno (max is %d)\n", userconf_maxdev);
}
}
static void
userconf_help(void)
{
int j = 0, k;
printf("command args description\n");
while (*userconf_cmds[j] != '\0') {
printf(userconf_cmds[j]);
k = strlen(userconf_cmds[j]);
while (k < 10) {
printf(" ");
k++;
}
switch (*userconf_cmds[j+1]) {
case 'L':
printf("[count] number of lines before more");
break;
case 'b':
printf("8|10|16 base on large numbers");
break;
case 'c':
printf("devno|dev change devices");
break;
case 'd':
printf("devno|dev disable devices");
break;
case 'e':
printf("devno|dev enable devices");
break;
case 'f':
printf("devno|dev find devices");
break;
case 'h':
printf(" this message");
break;
case 'l':
printf(" list configuration");
break;
case 'q':
printf(" leave userconf");
break;
default:
printf(" don't know");
break;
}
printf("\n");
j += 2;
}
}
static void
userconf_list(void)
{
int i = 0;
userconf_cnt = 0;
while (cfdata[i].cf_name != NULL) {
if (userconf_more())
break;
userconf_pdev(i++);
}
userconf_cnt = -1;
}
static void
userconf_common_dev(char *dev, int len, short unit, short state, char routine)
{
int i = 0;
switch (routine) {
case UC_CHANGE:
break;
default:
userconf_cnt = 0;
break;
}
while (cfdata[i].cf_name != NULL) {
if (strlen(cfdata[i].cf_name) == len) {
/*
* Ok, if device name is correct
* If state == FSTATE_FOUND, look for "dev"
* If state == FSTATE_STAR, look for "dev*"
* If state == FSTATE_NOTFOUND, look for "dev0"
*/
if (strncasecmp(dev, cfdata[i].cf_name,
len) == 0 &&
(state == FSTATE_FOUND ||
(state == FSTATE_STAR &&
(cfdata[i].cf_fstate == FSTATE_STAR ||
cfdata[i].cf_fstate == FSTATE_DSTAR)) ||
(state == FSTATE_NOTFOUND &&
cfdata[i].cf_unit == unit &&
(cfdata[i].cf_fstate == FSTATE_NOTFOUND ||
cfdata[i].cf_fstate == FSTATE_DNOTFOUND)))) {
if (userconf_more())
break;
switch (routine) {
case UC_CHANGE:
userconf_change(i);
break;
case UC_ENABLE:
userconf_enable(i);
break;
case UC_DISABLE:
userconf_disable(i);
break;
case UC_FIND:
userconf_pdev(i);
break;
default:
printf("Unknown routine /%c/\n",
routine);
break;
}
}
}
i++;
}
switch (routine) {
case UC_CHANGE:
break;
default:
userconf_cnt = -1;
break;
}
}
#if 0
static void
userconf_add_read(char *prompt, char field, char *dev, int len, int *val)
{
int ok = 0;
int a;
char *c;
*val = -1;
while (!ok) {
printf("%s ? ", prompt);
getsn(userconf_argbuf, sizeof(userconf_argbuf));
c = userconf_argbuf;
while (*c == ' ' || *c == '\t' || *c == '\n') c++;
if (*c != '\0') {
if (userconf_number(c, &a) == 0) {
if (a > userconf_maxdev) {
printf("Unknown devno (max is %d)\n",
userconf_maxdev);
} else if (strncasecmp(dev,
cfdata[a].cf_name, len) != 0 &&
field == 'a') {
printf("Not same device type\n");
} else {
*val = a;
ok = 1;
}
} else if (*c == '?') {
userconf_common_dev(dev, len, 0,
FSTATE_FOUND, UC_FIND);
} else if (*c == 'q' || *c == 'Q') {
ok = 1;
} else {
printf("Unknown argument\n");
}
} else {
ok = 1;
}
}
}
#endif /* 0 */
static int
userconf_parse(char *cmd)
{
char *c, *v;
int i = 0, j = 0, k, a;
short unit, state;
c = cmd;
while (*c == ' ' || *c == '\t')
c++;
v = c;
while (*c != ' ' && *c != '\t' && *c != '\n' && *c != '\0') {
c++;
i++;
}
k = -1;
while (*userconf_cmds[j] != '\0') {
if (strlen(userconf_cmds[j]) == i) {
if (strncasecmp(v, userconf_cmds[j], i) == 0)
k = j;
}
j += 2;
}
while (*c == ' ' || *c == '\t' || *c == '\n')
c++;
if (k == -1) {
if (*v != '\n')
printf("Unknown command, try help\n");
} else {
switch (*userconf_cmds[k+1]) {
case 'L':
if (*c == '\0')
printf("Argument expected\n");
else if (userconf_number(c, &a) == 0)
userconf_lines = a;
else
printf("Unknown argument\n");
break;
case 'b':
if (*c == '\0')
printf("8|10|16 expected\n");
else if (userconf_number(c, &a) == 0) {
if (a == 8 || a == 10 || a == 16) {
userconf_base = a;
} else {
printf("8|10|16 expected\n");
}
} else
printf("Unknown argument\n");
break;
case 'c':
if (*c == '\0')
printf("DevNo or Dev expected\n");
else if (userconf_number(c, &a) == 0)
userconf_change(a);
else if (userconf_device(c, &a, &unit, &state) == 0)
userconf_common_dev(c, a, unit, state, UC_CHANGE);
else
printf("Unknown argument\n");
break;
case 'd':
if (*c == '\0')
printf("Attr, DevNo or Dev expected\n");
else if (userconf_number(c, &a) == 0)
userconf_disable(a);
else if (userconf_device(c, &a, &unit, &state) == 0)
userconf_common_dev(c, a, unit, state, UC_DISABLE);
else
printf("Unknown argument\n");
break;
case 'e':
if (*c == '\0')
printf("Attr, DevNo or Dev expected\n");
else if (userconf_number(c, &a) == 0)
userconf_enable(a);
else if (userconf_device(c, &a, &unit, &state) == 0)
userconf_common_dev(c, a, unit, state, UC_ENABLE);
else
printf("Unknown argument\n");
break;
case 'f':
if (*c == '\0')
printf("DevNo or Dev expected\n");
else if (userconf_number(c, &a) == 0)
userconf_pdev(a);
else if (userconf_device(c, &a, &unit, &state) == 0)
userconf_common_dev(c, a, unit, state, UC_FIND);
else
printf("Unknown argument\n");
break;
case 'h':
userconf_help();
break;
case 'l':
if (*c == '\0')
userconf_list();
else
printf("Unknown argument\n");
break;
case 'q':
/* XXX add cmd 'q' eoc */
userconf_hist_cmd('q');
userconf_hist_eoc();
return(-1);
case 's':
default:
printf("Unknown command\n");
break;
}
}
return(0);
}
extern void user_config(void);
void
user_config(void)
{
char prompt[] = "uc> ";
userconf_init();
printf("userconf: configure system autoconfiguration:\n");
while (1) {
printf(prompt);
if (getsn(userconf_cmdbuf, sizeof(userconf_cmdbuf)) > 0 &&
userconf_parse(userconf_cmdbuf))
break;
}
printf("Continuing...\n");
}
/*
* XXX shouldn't this be a common function?
*/
static int
getsn(char *cp, int size)
{
char *lp;
int c, len;
cnpollc(1);
lp = cp;
len = 0;
for (;;) {
c = cngetc();
switch (c) {
case '\n':
case '\r':
printf("\n");
*lp++ = '\0';
cnpollc(0);
return (len);
case '\b':
case '\177':
case '#':
if (len) {
--len;
--lp;
printf("\b \b");
}
continue;
case '@':
case 'u'&037:
len = 0;
lp = cp;
printf("\n");
continue;
default:
if (len + 1 >= size || c < ' ') {
printf("\007");
continue;
}
printf("%c", c);
++len;
*lp++ = c;
}
}
}
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