1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <unistd.h> 32 #include <errno.h> 33 #include <libintl.h> 34 #include <string.h> 35 #include <fcntl.h> 36 #include <sys/buf.h> 37 #include <sys/stat.h> 38 #include <sys/wait.h> 39 #include <limits.h> 40 #include <malloc.h> 41 #include <locale.h> 42 #include <ftw.h> 43 #include <sys/types.h> 44 #include <sys/mkdev.h> 45 #include "addrem.h" 46 #include "errmsg.h" 47 48 #define FT_DEPTH 15 /* device tree depth for nftw() */ 49 50 static void usage(void); 51 52 int 53 main(int argc, char *argv[]) 54 { 55 int opt; 56 char *basedir = NULL, *driver_name = NULL; 57 int server = 0, mod_unloaded = 0; 58 int modid, found; 59 char maj_num[MAX_STR_MAJOR + 1]; 60 int err; 61 62 (void) setlocale(LC_ALL, ""); 63 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 64 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */ 65 #endif 66 (void) textdomain(TEXT_DOMAIN); 67 68 /* must be run by root */ 69 70 if (getuid() != 0) { 71 (void) fprintf(stderr, gettext(ERR_NOT_ROOT)); 72 exit(1); 73 } 74 75 while ((opt = getopt(argc, argv, "b:")) != -1) { 76 switch (opt) { 77 case 'b' : 78 server = 1; 79 basedir = calloc(strlen(optarg) + 1, 1); 80 if (basedir == NULL) { 81 (void) fprintf(stderr, gettext(ERR_NO_MEM)); 82 exit(1); 83 } 84 (void) strcat(basedir, optarg); 85 break; 86 case '?' : 87 usage(); 88 exit(1); 89 } 90 } 91 92 if (argv[optind] != NULL) { 93 driver_name = calloc(strlen(argv[optind]) + 1, 1); 94 if (driver_name == NULL) { 95 (void) fprintf(stderr, gettext(ERR_NO_MEM)); 96 exit(1); 97 98 } 99 (void) strcat(driver_name, argv[optind]); 100 /* 101 * check for extra args 102 */ 103 if ((optind + 1) != argc) { 104 usage(); 105 exit(1); 106 } 107 108 } else { 109 usage(); 110 exit(1); 111 } 112 113 /* set up add_drv filenames */ 114 if ((build_filenames(basedir)) == ERROR) { 115 exit(1); 116 } 117 118 /* must be only running version of add_drv/mod_drv/rem_drv */ 119 enter_lock(); 120 121 if ((check_perms_aliases(1, 1)) == ERROR) 122 err_exit(); 123 124 if ((check_name_to_major(R_OK | W_OK)) == ERROR) 125 err_exit(); 126 127 /* look up the major number of the driver being removed. */ 128 if ((found = get_major_no(driver_name, name_to_major)) == ERROR) { 129 (void) fprintf(stderr, gettext(ERR_MAX_MAJOR), name_to_major); 130 err_exit(); 131 } 132 if (found == UNIQUE) { 133 (void) fprintf(stderr, gettext(ERR_NOT_INSTALLED), 134 driver_name); 135 err_exit(); 136 } 137 138 if (!server) { 139 mod_unloaded = 1; 140 141 /* get the module id for this driver */ 142 get_modid(driver_name, &modid); 143 144 /* module is installed */ 145 if (modid != -1) { 146 if (modctl(MODUNLOAD, modid) < 0) { 147 perror(NULL); 148 (void) fprintf(stderr, gettext(ERR_MODUN), 149 driver_name); 150 mod_unloaded = 0; 151 } 152 } 153 /* unload driver.conf file */ 154 if (modctl(MODUNLOADDRVCONF, (major_t)found) < 0) { 155 perror(NULL); 156 (void) fprintf(stderr, 157 gettext("cannot unload %s.conf\n"), driver_name); 158 } 159 } 160 161 if (mod_unloaded && (modctl(MODREMMAJBIND, (major_t)found) < 0)) { 162 perror(NULL); 163 (void) fprintf(stderr, gettext(ERR_MODREMMAJ), found); 164 } 165 /* 166 * add driver to rem_name_to_major; if this fails, don`t 167 * delete from name_to_major 168 */ 169 (void) sprintf(maj_num, "%d", found); 170 171 if (append_to_file(driver_name, maj_num, 172 rem_name_to_major, ' ', " ") == ERROR) { 173 (void) fprintf(stderr, gettext(ERR_NO_UPDATE), 174 rem_name_to_major); 175 err_exit(); 176 } 177 178 /* 179 * If removing the driver from the running system, notify 180 * kernel dynamically to remove minor perm entries. 181 */ 182 if (basedir == NULL || (strcmp(basedir, "/") == 0)) { 183 err = devfs_rm_minor_perm(driver_name, log_minorperm_error); 184 if (err != 0) { 185 (void) fprintf(stderr, gettext(ERR_UPDATE_PERM), 186 driver_name, err); 187 } 188 } 189 190 /* 191 * delete references to driver in add_drv/rem_drv database 192 */ 193 remove_entry(CLEAN_ALL, driver_name); 194 195 /* 196 * Clean up any dangling devfs shadow nodes for this 197 * driver so that, in the event the driver is re-added 198 * to the system, newly created nodes won't incorrectly 199 * pick up these stale shadow node permissions. 200 */ 201 if (basedir == NULL || (strcmp(basedir, "/") == 0)) { 202 err = modctl(MODREMDRVCLEANUP, driver_name, 0, NULL); 203 if (err != 0) { 204 (void) fprintf(stderr, gettext(ERR_REMDRV_CLEANUP), 205 driver_name, err); 206 } 207 } 208 209 exit_unlock(); 210 211 return (NOERR); 212 } 213 214 static void 215 usage() 216 { 217 (void) fprintf(stderr, gettext(REM_USAGE1)); 218 } 219