freebsd-dev/usr.bin/devmenu/devfilter.c

199 lines
4.5 KiB
C

/*
* Copyright 1995 Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that both the above copyright notice and this
* permission notice appear in all copies, that both the above
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
* SHALL M.I.T. 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.
*/
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/devconf.h>
#include <sys/proc.h>
#include <vm/vm.h>
#include <sys/sysctl.h>
#include <err.h>
#include <sysexits.h>
#include "devmenu.h"
char *
devmenu_toname(const struct devconf *dev)
{
static char buf[2*MAXDEVNAME];
snprintf(buf, sizeof buf, "%s%d", dev->dc_name, dev->dc_unit);
return buf;
}
int
devmenu_filter(const struct devconf *dev, char **userlist)
{
int i;
char *name;
if (!userlist)
return 1;
name = devmenu_toname(dev);
for (i = 0; userlist[i]; i++) {
if (strcmp(name, userlist[i]) == 0) {
return 1;
}
}
return 0;
}
struct devconf **
devmenu_alldevs(void)
{
int mib[3];
size_t size;
int ndevs, i, ndx;
struct devconf **rv;
size = sizeof ndevs;
mib[0] = CTL_HW;
mib[1] = HW_DEVCONF;
mib[2] = DEVCONF_NUMBER;
if (sysctl(mib, 3, &ndevs, &size, 0, 0) < 0) {
err(EX_OSERR, "sysctl failed reading hw.devconf.number");
}
rv = malloc((ndevs + 1) * sizeof *rv);
if (!rv) {
err(EX_UNAVAILABLE, "malloc(%lu)",
(unsigned long)(ndevs * sizeof *rv));
}
for (ndx = 0, i = 1; i <= ndevs; i++) {
mib[2] = i;
if (sysctl(mib, 3, 0, &size, 0, 0) < 0) {
continue;
}
rv[ndx] = malloc(size);
if (!rv[ndx]) {
err(EX_UNAVAILABLE, "malloc(%lu)",
(unsigned long)size);
}
if (sysctl(mib, 3, rv[ndx], &size, 0, 0) < 0) {
err(EX_OSERR, "sysctl reading hw.devconf.%d", i);
}
ndx++;
}
rv[ndx] = 0;
return rv;
}
void
devmenu_freedevs(struct devconf ***devpp)
{
struct devconf **devp = *devpp;
int i;
for (i = 0; devp[i]; i++) {
free(devp[i]);
}
free(devp);
*devpp = 0;
}
const char *
devmenu_common(const char *title, const char *hfile, char **devnames,
const char *prompt, const char *none, enum dc_class class,
int states)
{
struct devconf **devs;
int s;
unsigned char **items = 0;
int nitems = 0;
int itemindex = 0;
char *name;
int i;
static char resbuf[2*MAXDEVNAME];
if (hfile) {
use_helpfile((char *)hfile);
}
devs = devmenu_alldevs();
for (i = 0; devs[i]; i++) {
if (states && !((1 << devs[i]->dc_state) & states))
continue;
if (class && !(devs[i]->dc_class & class))
continue;
if (devmenu_filter(devs[i], devnames)) {
++nitems;
items = realloc(items, 2 * nitems * sizeof *items);
if (!items) {
err(EX_UNAVAILABLE, "malloc(%lu)",
(unsigned long)(2 * nitems * sizeof *items));
}
name = devmenu_toname(devs[i]);
items[itemindex] = strdup(name);
if (!items[itemindex]) {
err(EX_UNAVAILABLE, "strdup-malloc(%lu)",
(unsigned long)(strlen(name) + 1));
}
items[itemindex + 1] = devs[i]->dc_descr;
itemindex += 2;
}
}
if (!nitems) {
dialog_msgbox((char *)title, none, -1, -1, 1);
return "none";
}
name = resbuf;
if(dialog_menu((char *)title, prompt, 24, 78, 18, nitems, items,
resbuf, 0, 0) != 0) {
name = "none";
}
for (i = 0; i < 2 * nitems; i += 2) {
free(items[i]);
}
free(items);
devmenu_freedevs(&devs);
return name;
}