/*
* 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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <libintl.h>
#include <string.h>
#include <fcntl.h>
#include <sys/buf.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <limits.h>
#include <malloc.h>
#include <locale.h>
#include <ftw.h>
#include <sys/types.h>
#include <sys/mkdev.h>
#include <sys/modctl.h>
#include <sys/instance.h>
#include <libdevinfo.h>
#include <zone.h>
#include "addrem.h"
#include "errmsg.h"
#define FT_DEPTH 15 /* device tree depth for nftw() */
static void usage(void);
static void cleanup_devfs_attributes(char *, char *);
int
main(int argc, char *argv[])
{
int opt;
char *basedir = NULL, *driver_name = NULL;
int server = 0, mod_unloaded = 0;
int modid, found;
char maj_num[MAX_STR_MAJOR + 1];
int cleanup = 0;
int err;
int n_flag = 0;
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
#endif
(void) textdomain(TEXT_DOMAIN);
/* must be run by root */
if (getuid() != 0) {
(void) fprintf(stderr, gettext(ERR_NOT_ROOT));
exit(1);
}
while ((opt = getopt(argc, argv, "b:Cn")) != -1) {
switch (opt) {
case 'b' :
server = 1;
basedir = calloc(strlen(optarg) + 1, 1);
if (basedir == NULL) {
(void) fprintf(stderr, gettext(ERR_NO_MEM));
exit(1);
}
(void) strcat(basedir, optarg);
break;
case 'C':
cleanup = 1;
break;
case 'n':
n_flag = 1;
break;
case '?' :
usage();
exit(1);
}
}
if (argv[optind] != NULL) {
driver_name = calloc(strlen(argv[optind]) + 1, 1);
if (driver_name == NULL) {
(void) fprintf(stderr, gettext(ERR_NO_MEM));
exit(1);
}
(void) strcat(driver_name, argv[optind]);
/*
* check for extra args
*/
if ((optind + 1) != argc) {
usage();
exit(1);
}
} else {
usage();
exit(1);
}
if (getzoneid() != GLOBAL_ZONEID) {
(void) fprintf(stderr, gettext(ERR_NOT_GLOBAL_ZONE));
exit(1);
}
/* set up add_drv filenames */
if ((build_filenames(basedir)) == ERROR) {
exit(1);
}
/* must be only running version of add_drv/mod_drv/rem_drv */
enter_lock();
if ((check_perms_aliases(1, 1)) == ERROR)
err_exit();
if ((check_name_to_major(R_OK | W_OK)) == ERROR)
err_exit();
/* look up the major number of the driver being removed. */
if ((found = get_major_no(driver_name, name_to_major)) == ERROR) {
(void) fprintf(stderr, gettext(ERR_MAX_MAJOR), name_to_major);
err_exit();
}
if (found == UNIQUE) {
(void) fprintf(stderr, gettext(ERR_NOT_INSTALLED),
driver_name);
err_exit();
}
if (n_flag == 0 && !server) {
mod_unloaded = 1;
/* get the module id for this driver */
get_modid(driver_name, &modid);
/* module is installed */
if (modid != -1) {
if (modctl(MODUNLOAD, modid) < 0) {
perror(NULL);
(void) fprintf(stderr, gettext(ERR_MODUN),
driver_name);
mod_unloaded = 0;
}
}
/* unload driver.conf file */
if (modctl(MODUNLOADDRVCONF, (major_t)found) < 0) {
perror(NULL);
(void) fprintf(stderr,
gettext("cannot unload %s.conf\n"), driver_name);
}
}
if (mod_unloaded && (modctl(MODREMMAJBIND, (major_t)found) < 0)) {
perror(NULL);
(void) fprintf(stderr, gettext(ERR_MODREMMAJ), found);
}
/*
* add driver to rem_name_to_major; if this fails, don`t
* delete from name_to_major
*/
(void) sprintf(maj_num, "%d", found);
if (append_to_file(driver_name, maj_num,
rem_name_to_major, ' ', " ", 0) == ERROR) {
(void) fprintf(stderr, gettext(ERR_NO_UPDATE),
rem_name_to_major);
err_exit();
}
/*
* If removing the driver from the running system, notify
* kernel dynamically to remove minor perm entries.
*/
if ((n_flag == 0) &&
(basedir == NULL || (strcmp(basedir, "/") == 0))) {
err = devfs_rm_minor_perm(driver_name, log_minorperm_error);
if (err != 0) {
(void) fprintf(stderr, gettext(ERR_UPDATE_PERM),
driver_name, err);
}
}
/*
* delete references to driver in add_drv/rem_drv database
*/
remove_entry(CLEAN_ALL, driver_name);
/*
* Optionally clean up any dangling devfs shadow nodes for
* this driver so that, in the event the driver is re-added
* to the system, newly created nodes won't incorrectly
* pick up these stale shadow node permissions.
*/
if ((n_flag == 0) && cleanup) {
if ((basedir == NULL || (strcmp(basedir, "/") == 0))) {
err = modctl(MODREMDRVCLEANUP, driver_name, 0, NULL);
if (err != 0) {
(void) fprintf(stderr,
gettext(ERR_REMDRV_CLEANUP),
driver_name, err);
}
} else if (strcmp(basedir, "/") != 0) {
cleanup_devfs_attributes(basedir, driver_name);
}
}
exit_unlock();
return (NOERR);
}
/*
* Optionally remove attribute nodes for a driver when
* removing drivers on a mounted root image. Useful
* when reprovisioning a machine to return to default
* permission/ownership settings if the driver is
* re-installed.
*/
typedef struct cleanup_arg {
char *ca_basedir;
char *ca_drvname;
} cleanup_arg_t;
/*
* Callback to remove a minor node for a device
*/
/*ARGSUSED*/
static int
cleanup_minor_walker(void *cb_arg, const char *minor_path)
{
if (unlink(minor_path) == -1) {
(void) fprintf(stderr, "rem_drv: error removing %s - %s\n",
minor_path, strerror(errno));
}
return (DI_WALK_CONTINUE);
}
/*
* Callback for each device registered in the binding file (path_to_inst)
*/
/*ARGSUSED*/
static int
cleanup_device_walker(void *cb_arg, const char *inst_path,
int inst_number, const char *inst_driver)
{
char path[MAXPATHLEN];
cleanup_arg_t *arg = (cleanup_arg_t *)cb_arg;
int rv = DI_WALK_CONTINUE;
if (strcmp(inst_driver, arg->ca_drvname) == 0) {
if (snprintf(path, MAXPATHLEN, "%s/devices%s",
arg->ca_basedir, inst_path) < MAXPATHLEN) {
rv = devfs_walk_minor_nodes(path,
cleanup_minor_walker, NULL);
}
}
return (rv);
}
static void
cleanup_devfs_attributes(char *basedir, char *driver_name)
{
cleanup_arg_t arg;
char binding_path[MAXPATHLEN+1];
(void) snprintf(binding_path, MAXPATHLEN,
"%s%s", basedir, INSTANCE_FILE);
arg.ca_basedir = basedir;
arg.ca_drvname = driver_name;
(void) devfs_parse_binding_file(binding_path,
cleanup_device_walker, (void *)&arg);
}
static void
usage()
{
(void) fprintf(stderr, gettext(REM_USAGE1));
}