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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Device allocation related work.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/dkio.h>
#include <sys/wait.h>
#include <bsm/devalloc.h>
#define DEALLOCATE "/usr/sbin/deallocate"
#define MKDEVALLOC "/usr/sbin/mkdevalloc"
static void _update_dev(deventry_t *, int, char *);
static int _make_db();
/*
* _da_check_for_usb
* returns 1 if device pointed by 'link' is a removable hotplugged
* else returns 0.
*/
int
_da_check_for_usb(char *link, char *root_dir)
{
int fd = -1;
int len, dstsize;
int removable = 0;
char *p = NULL;
char path[MAXPATHLEN];
dstsize = sizeof (path);
if (strcmp(root_dir, "") != 0) {
if (strlcat(path, root_dir, dstsize) >= dstsize)
return (0);
len = strlen(path);
} else {
len = 0;
}
if (strstr(link, "rdsk")) {
(void) snprintf(path, dstsize - len, "%s", link);
} else if (strstr(link, "dsk")) {
p = rindex(link, '/');
if (p == NULL)
return (0);
p++;
(void) snprintf(path, dstsize - len, "%s%s", "/dev/rdsk/", p);
} else {
return (0);
}
if ((fd = open(path, O_RDONLY | O_NONBLOCK)) < 0)
return (0);
(void) ioctl(fd, DKIOCREMOVABLE, &removable);
(void) close(fd);
return (removable);
}
/*
* _reset_devalloc
* If device allocation is being turned on, creates device_allocate
* device_maps if they do not exist.
* Puts DEVICE_ALLOCATION=ON/OFF in device_allocate to indicate if
* device allocation is on/off.
*/
void
_reset_devalloc(int action)
{
da_args dargs;
if (action == DA_ON)
(void) _make_db();
else if ((action == DA_OFF) && (open(DEVALLOC, O_RDONLY) == -1))
return;
if (action == DA_ON)
dargs.optflag = DA_ON;
else if (action == DA_OFF)
dargs.optflag = DA_OFF | DA_ALLOC_ONLY;
dargs.rootdir = NULL;
dargs.devnames = NULL;
dargs.devinfo = NULL;
(void) da_update_device(&dargs);
}
/*
* _make_db
* execs /usr/sbin/mkdevalloc to create device_allocate and
* device_maps.
*/
static int
_make_db()
{
int status;
pid_t pid, wpid;
pid = vfork();
switch (pid) {
case -1:
return (1);
case 0:
if (execl(MKDEVALLOC, MKDEVALLOC, DA_IS_LABELED, NULL) == -1)
exit((errno == ENOENT) ? 0 : 1);
default:
for (;;) {
wpid = waitpid(pid, &status, 0);
if (wpid == (pid_t)-1) {
if (errno == EINTR)
continue;
else
return (1);
} else {
break;
}
}
break;
}
return ((WIFEXITED(status) == 0) ? 1 : WEXITSTATUS(status));
}
/*
* _update_devalloc_db
* Forms allocatable device entries to be written to device_allocate and
* device_maps.
*/
/* ARGSUSED */
void
_update_devalloc_db(devlist_t *devlist, int devflag, int action, char *devname,
char *root_dir)
{
int i;
deventry_t *entry = NULL, *dentry = NULL;
if (action == DA_ADD) {
for (i = 0; i < DA_COUNT; i++) {
switch (i) {
case 0:
dentry = devlist->audio;
break;
case 1:
dentry = devlist->cd;
break;
case 2:
dentry = devlist->floppy;
break;
case 3:
dentry = devlist->tape;
break;
case 4:
dentry = devlist->rmdisk;
break;
default:
return;
}
if (dentry)
_update_dev(dentry, action, NULL);
}
} else if (action == DA_REMOVE) {
if (devflag & DA_AUDIO)
dentry = devlist->audio;
else if (devflag & DA_CD)
dentry = devlist->cd;
else if (devflag & DA_FLOPPY)
dentry = devlist->floppy;
else if (devflag & DA_TAPE)
dentry = devlist->tape;
else if (devflag & DA_RMDISK)
dentry = devlist->rmdisk;
else
return;
for (entry = dentry; entry != NULL; entry = entry->next) {
if (strcmp(entry->devinfo.devname, devname) == 0)
break;
}
_update_dev(entry, action, devname);
}
}
static void
_update_dev(deventry_t *dentry, int action, char *devname)
{
da_args dargs;
deventry_t newentry, *entry;
dargs.rootdir = NULL;
dargs.devnames = NULL;
if (action == DA_ADD) {
dargs.optflag = DA_ADD | DA_FORCE;
for (entry = dentry; entry != NULL; entry = entry->next) {
dargs.devinfo = &(entry->devinfo);
(void) da_update_device(&dargs);
}
} else if (action == DA_REMOVE) {
dargs.optflag = DA_REMOVE;
if (dentry) {
entry = dentry;
} else {
newentry.devinfo.devname = strdup(devname);
newentry.devinfo.devtype =
newentry.devinfo.devauths =
newentry.devinfo.devexec =
newentry.devinfo.devopts =
newentry.devinfo.devlist = NULL;
newentry.devinfo.instance = 0;
newentry.next = NULL;
entry = &newentry;
}
dargs.devinfo = &(entry->devinfo);
(void) da_update_device(&dargs);
}
}
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