1 | /* $NetBSD: mknod.c,v 1.39 2009/02/13 01:37:23 lukem Exp $ */ |
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2 | |
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3 | /*- |
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4 | * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc. |
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5 | * All rights reserved. |
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6 | * |
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7 | * This code is derived from software contributed to The NetBSD Foundation |
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8 | * by Charles M. Hannum. |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
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20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
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23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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29 | * POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #ifdef HAVE_CONFIG_H |
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33 | #include "config.h" |
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34 | #endif |
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35 | |
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36 | #if HAVE_NBTOOL_CONFIG_H |
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37 | #include "nbtool_config.h" |
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38 | #endif |
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39 | |
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40 | #if 0 |
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41 | #ifndef lint |
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42 | __COPYRIGHT("@(#) Copyright (c) 1998\ |
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43 | The NetBSD Foundation, Inc. All rights reserved."); |
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44 | __RCSID("$NetBSD: mknod.c,v 1.39 2009/02/13 01:37:23 lukem Exp $"); |
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45 | #endif /* not lint */ |
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46 | #endif |
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47 | |
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48 | #include <rtems.h> |
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49 | #include <rtems/shell.h> |
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50 | #include <rtems/shellconfig.h> |
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51 | #define __need_getopt_newlib |
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52 | #include <getopt.h> |
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53 | |
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54 | #include <sys/cdefs.h> |
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55 | |
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56 | #include <sys/types.h> |
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57 | #include <sys/stat.h> |
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58 | #include <sys/param.h> |
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59 | #if !HAVE_NBTOOL_CONFIG_H && defined(KERN_DRIVERS) |
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60 | #include <sys/sysctl.h> |
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61 | #endif |
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62 | |
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63 | #include <err.h> |
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64 | #include <errno.h> |
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65 | #include <limits.h> |
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66 | #include <stdio.h> |
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67 | #include <stdlib.h> |
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68 | #include <unistd.h> |
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69 | #include <pwd.h> |
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70 | #include <grp.h> |
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71 | #include <string.h> |
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72 | #include <ctype.h> |
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73 | |
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74 | #include "mknod-pack_dev.h" |
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75 | |
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76 | #include <setjmp.h> |
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77 | |
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78 | typedef struct { |
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79 | int exit_code; |
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80 | jmp_buf exit_jmp; |
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81 | } rtems_shell_mknod_globals; |
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82 | |
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83 | #define exit_jump &(globals->exit_jmp) |
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84 | |
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85 | #define exit(ec) rtems_shell_mknod_exit(globals, ec) |
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86 | |
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87 | static int gid_name(const char *, gid_t *); |
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88 | static portdev_t callPack(rtems_shell_mknod_globals* globals, |
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89 | pack_t *, int, u_long *); |
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90 | |
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91 | static int main_mknod(rtems_shell_mknod_globals*, int, char *[]); |
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92 | static void usage(rtems_shell_mknod_globals* ); |
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93 | |
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94 | static void |
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95 | rtems_shell_mknod_exit (rtems_shell_mknod_globals* globals, int code) |
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96 | { |
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97 | globals->exit_code = code; |
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98 | longjmp (globals->exit_jmp, 1); |
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99 | } |
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100 | |
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101 | #include "mknod-pack_dev.c" |
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102 | |
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103 | int |
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104 | rtems_shell_main_mknod(int argc, char *argv[]) |
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105 | { |
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106 | rtems_shell_mknod_globals mknod_globals; |
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107 | rtems_shell_mknod_globals* globals = &mknod_globals; |
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108 | memset (globals, 0, sizeof (mknod_globals)); |
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109 | mknod_globals.exit_code = 1; |
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110 | if (setjmp (mknod_globals.exit_jmp) == 0) |
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111 | return main_mknod (globals, argc, argv); |
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112 | return mknod_globals.exit_code; |
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113 | } |
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114 | |
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115 | #define getprogname() "mknod" |
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116 | |
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117 | #ifdef KERN_DRIVERS |
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118 | #error invalid for RTEMS |
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119 | static struct kinfo_drivers *kern_drivers; |
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120 | static int num_drivers; |
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121 | |
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122 | static void get_device_info(void); |
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123 | static void print_device_info(char **); |
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124 | static int major_from_name(const char *, mode_t); |
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125 | #endif |
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126 | |
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127 | #define MAXARGS 3 /* 3 for bsdos, 2 for rest */ |
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128 | |
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129 | int |
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130 | main_mknod(rtems_shell_mknod_globals* globals, int argc, char **argv) |
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131 | { |
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132 | char *name, *p; |
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133 | mode_t mode; |
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134 | portdev_t dev; |
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135 | pack_t *pack; |
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136 | u_long numbers[MAXARGS]; |
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137 | int n, ch, fifo, hasformat; |
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138 | int r_flag = 0; /* force: delete existing entry */ |
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139 | #ifdef KERN_DRIVERS |
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140 | int l_flag = 0; /* list device names and numbers */ |
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141 | int major; |
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142 | #endif |
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143 | #if RTEMS_REMOVED |
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144 | void *modes = 0; |
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145 | #endif |
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146 | uid_t uid = -1; |
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147 | gid_t gid = -1; |
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148 | int rval; |
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149 | |
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150 | struct getopt_data getopt_reent; |
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151 | memset(&getopt_reent, 0, sizeof(getopt_data)); |
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152 | |
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153 | dev = 0; |
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154 | fifo = hasformat = 0; |
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155 | pack = pack_native; |
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156 | |
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157 | #ifdef KERN_DRIVERS |
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158 | while ((ch = getopt(argc, argv, "lrRF:g:m:u:")) != -1) { |
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159 | #else |
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160 | while ((ch = getopt_r(argc, argv, "rRF:g:m:u:", &getopt_reent)) != -1) { |
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161 | #endif |
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162 | switch (ch) { |
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163 | |
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164 | #ifdef KERN_DRIVERS |
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165 | case 'l': |
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166 | l_flag = 1; |
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167 | break; |
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168 | #endif |
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169 | |
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170 | case 'r': |
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171 | r_flag = 1; |
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172 | break; |
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173 | |
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174 | case 'R': |
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175 | r_flag = 2; |
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176 | break; |
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177 | |
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178 | case 'F': |
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179 | pack = pack_find(getopt_reent.optarg); |
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180 | if (pack == NULL) |
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181 | errx(exit_jump, 1, "invalid format: %s", getopt_reent.optarg); |
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182 | hasformat++; |
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183 | break; |
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184 | |
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185 | case 'g': |
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186 | if (getopt_reent.optarg[0] == '#') { |
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187 | gid = strtol(getopt_reent.optarg + 1, &p, 10); |
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188 | if (*p == 0) |
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189 | break; |
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190 | } |
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191 | if (gid_name(getopt_reent.optarg, &gid) == 0) |
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192 | break; |
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193 | gid = strtol(getopt_reent.optarg, &p, 10); |
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194 | if (*p == 0) |
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195 | break; |
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196 | errx(exit_jump, 1, "%s: invalid group name", getopt_reent.optarg); |
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197 | |
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198 | case 'm': |
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199 | #if RTEMS_REMOVED |
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200 | modes = setmode(getopt_reent.optarg); |
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201 | if (modes == NULL) |
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202 | #endif |
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203 | err(exit_jump, 1, "Cannot set file mode `%s'", getopt_reent.optarg); |
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204 | break; |
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205 | |
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206 | case 'u': |
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207 | if (getopt_reent.optarg[0] == '#') { |
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208 | uid = strtol(getopt_reent.optarg + 1, &p, 10); |
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209 | if (*p == 0) |
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210 | break; |
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211 | } |
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212 | #if RTEMS_REMOVED |
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213 | if (uid_from_user(getopt_reent.optarg, &uid) == 0) |
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214 | break; |
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215 | #endif |
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216 | uid = strtol(getopt_reent.optarg, &p, 10); |
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217 | if (*p == 0) |
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218 | break; |
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219 | errx(exit_jump, 1, "%s: invalid user name", getopt_reent.optarg); |
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220 | |
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221 | default: |
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222 | case '?': |
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223 | usage(globals); |
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224 | } |
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225 | } |
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226 | argc -= getopt_reent.optind; |
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227 | argv += getopt_reent.optind; |
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228 | |
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229 | #ifdef KERN_DRIVERS |
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230 | if (l_flag) { |
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231 | print_device_info(argv); |
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232 | return 0; |
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233 | } |
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234 | #endif |
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235 | |
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236 | if (argc < 2 || argc > 10) |
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237 | usage(globals); |
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238 | |
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239 | name = *argv; |
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240 | argc--; |
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241 | argv++; |
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242 | |
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243 | umask(mode = umask(0)); |
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244 | mode = (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) & ~mode; |
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245 | |
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246 | if (argv[0][1] != '\0') |
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247 | goto badtype; |
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248 | switch (*argv[0]) { |
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249 | case 'c': |
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250 | mode |= S_IFCHR; |
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251 | break; |
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252 | |
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253 | case 'b': |
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254 | mode |= S_IFBLK; |
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255 | break; |
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256 | |
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257 | case 'p': |
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258 | if (hasformat) |
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259 | errx(exit_jump, 1, "format is meaningless for fifos"); |
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260 | mode |= S_IFIFO; |
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261 | fifo = 1; |
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262 | break; |
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263 | |
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264 | default: |
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265 | badtype: |
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266 | errx(exit_jump, 1, "node type must be 'b', 'c' or 'p'."); |
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267 | } |
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268 | argc--; |
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269 | argv++; |
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270 | |
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271 | if (fifo) { |
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272 | if (argc != 0) |
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273 | usage(globals); |
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274 | } else { |
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275 | if (argc < 1 || argc > MAXARGS) |
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276 | usage(globals); |
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277 | } |
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278 | |
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279 | for (n = 0; n < argc; n++) { |
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280 | errno = 0; |
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281 | numbers[n] = strtoul(argv[n], &p, 0); |
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282 | if (*p == 0 && errno == 0) |
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283 | continue; |
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284 | #ifdef KERN_DRIVERS |
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285 | if (n == 0) { |
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286 | major = major_from_name(argv[0], mode); |
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287 | if (major != -1) { |
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288 | numbers[0] = major; |
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289 | continue; |
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290 | } |
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291 | if (!isdigit(*(unsigned char *)argv[0])) |
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292 | errx(1, "unknown driver: %s", argv[0]); |
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293 | } |
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294 | #endif |
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295 | errx(exit_jump, 1, "invalid number: %s", argv[n]); |
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296 | } |
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297 | |
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298 | switch (argc) { |
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299 | case 0: |
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300 | dev = 0; |
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301 | break; |
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302 | |
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303 | case 1: |
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304 | dev = numbers[0]; |
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305 | break; |
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306 | |
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307 | default: |
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308 | dev = callPack(globals, pack, argc, numbers); |
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309 | break; |
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310 | } |
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311 | |
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312 | #if RTEMS_REMOVED |
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313 | if (modes != NULL) |
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314 | mode = getmode(modes, mode); |
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315 | #endif |
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316 | umask(0); |
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317 | rval = fifo ? mkfifo(name, mode) : mknod(name, mode, dev); |
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318 | if (rval < 0 && errno == EEXIST && r_flag) { |
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319 | struct stat sb; |
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320 | if (lstat(name, &sb) != 0 || (!fifo && sb.st_rdev != dev)) |
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321 | sb.st_mode = 0; |
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322 | |
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323 | if ((sb.st_mode & S_IFMT) == (mode & S_IFMT)) { |
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324 | if (r_flag == 1) |
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325 | /* Ignore permissions and user/group */ |
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326 | return 0; |
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327 | if (sb.st_mode != mode) |
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328 | rval = chmod(name, mode); |
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329 | else |
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330 | rval = 0; |
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331 | } else { |
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332 | unlink(name); |
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333 | rval = fifo ? mkfifo(name, mode) |
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334 | : mknod(name, mode, dev); |
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335 | } |
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336 | } |
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337 | if (rval < 0) |
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338 | err(exit_jump, 1, "%s", name); |
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339 | if ((uid != (uid_t)-1 || gid != (uid_t)-1) && chown(name, uid, gid) == -1) |
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340 | /* XXX Should we unlink the files here? */ |
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341 | warn("%s: uid/gid not changed", name); |
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342 | |
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343 | return 0; |
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344 | } |
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345 | |
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346 | static void |
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347 | usage(rtems_shell_mknod_globals* globals) |
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348 | { |
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349 | const char *progname = getprogname(); |
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350 | |
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351 | (void)fprintf(stderr, |
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352 | "usage: %s [-rR] [-F format] [-m mode] [-u user] [-g group]\n", |
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353 | progname); |
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354 | (void)fprintf(stderr, |
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355 | #ifdef KERN_DRIVERS |
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356 | " [ name [b | c] [major | driver] minor\n" |
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357 | #else |
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358 | " [ name [b | c] major minor\n" |
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359 | #endif |
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360 | " | name [b | c] major unit subunit\n" |
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361 | " | name [b | c] number\n" |
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362 | " | name p ]\n"); |
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363 | #ifdef KERN_DRIVERS |
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364 | (void)fprintf(stderr, " %s -l [driver] ...\n", progname); |
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365 | #endif |
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366 | exit(1); |
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367 | } |
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368 | |
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369 | static int |
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370 | gid_name(const char *name, gid_t *gid) |
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371 | { |
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372 | struct group *g; |
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373 | |
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374 | g = getgrnam(name); |
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375 | if (!g) |
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376 | return -1; |
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377 | *gid = g->gr_gid; |
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378 | return 0; |
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379 | } |
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380 | |
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381 | static portdev_t |
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382 | callPack(rtems_shell_mknod_globals* globals, pack_t *f, int n, u_long *numbers) |
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383 | { |
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384 | portdev_t d; |
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385 | const char *error = NULL; |
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386 | |
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387 | d = (*f)(n, numbers, &error); |
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388 | if (error != NULL) |
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389 | errx(exit_jump, 1, "%s", error); |
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390 | return d; |
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391 | } |
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392 | |
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393 | #ifdef KERN_DRIVERS |
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394 | static void |
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395 | get_device_info(void) |
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396 | { |
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397 | static int mib[2] = {CTL_KERN, KERN_DRIVERS}; |
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398 | size_t len; |
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399 | |
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400 | if (sysctl(mib, 2, NULL, &len, NULL, 0) != 0) |
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401 | err(1, "kern.drivers" ); |
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402 | kern_drivers = malloc(len); |
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403 | if (kern_drivers == NULL) |
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404 | err(1, "malloc"); |
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405 | if (sysctl(mib, 2, kern_drivers, &len, NULL, 0) != 0) |
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406 | err(1, "kern.drivers" ); |
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407 | |
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408 | num_drivers = len / sizeof *kern_drivers; |
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409 | } |
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410 | |
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411 | static void |
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412 | print_device_info(char **names) |
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413 | { |
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414 | int i; |
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415 | struct kinfo_drivers *kd; |
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416 | |
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417 | if (kern_drivers == NULL) |
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418 | get_device_info(); |
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419 | |
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420 | do { |
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421 | kd = kern_drivers; |
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422 | for (i = 0; i < num_drivers; kd++, i++) { |
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423 | if (*names && strcmp(*names, kd->d_name)) |
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424 | continue; |
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425 | printf("%s", kd->d_name); |
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426 | if (kd->d_cmajor != -1) |
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427 | printf(" character major %d", kd->d_cmajor); |
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428 | if (kd->d_bmajor != -1) |
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429 | printf(" block major %d", kd->d_bmajor); |
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430 | printf("\n"); |
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431 | } |
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432 | } while (*names && *++names); |
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433 | } |
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434 | |
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435 | static int |
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436 | major_from_name(const char *name, mode_t mode) |
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437 | { |
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438 | int i; |
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439 | struct kinfo_drivers *kd; |
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440 | |
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441 | if (kern_drivers == NULL) |
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442 | get_device_info(); |
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443 | |
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444 | kd = kern_drivers; |
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445 | for (i = 0; i < num_drivers; kd++, i++) { |
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446 | if (strcmp(name, kd->d_name)) |
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447 | continue; |
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448 | if (S_ISCHR(mode)) |
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449 | return kd->d_cmajor; |
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450 | return kd->d_bmajor; |
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451 | } |
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452 | return -1; |
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453 | } |
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454 | #endif |
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455 | |
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456 | rtems_shell_cmd_t rtems_shell_MKNOD_Command = { |
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457 | "mknod", /* name */ |
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458 | "mknod mknod [-rR] [-F fmt] [-m mode] name [c | b] minor", /* usage */ |
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459 | "files", /* topic */ |
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460 | rtems_shell_main_mknod, /* command */ |
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461 | NULL, /* alias */ |
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462 | NULL /* next */ |
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463 | }; |
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