| 1 | /* MI Command Set - environment commands. |
| 2 | Copyright (C) 2002-2016 Free Software Foundation, Inc. |
| 3 | |
| 4 | Contributed by Red Hat Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "inferior.h" |
| 23 | #include "value.h" |
| 24 | #include "mi-out.h" |
| 25 | #include "mi-cmds.h" |
| 26 | #include "mi-getopt.h" |
| 27 | #include "symtab.h" |
| 28 | #include "target.h" |
| 29 | #include "environ.h" |
| 30 | #include "command.h" |
| 31 | #include "ui-out.h" |
| 32 | #include "top.h" |
| 33 | #include <sys/stat.h> |
| 34 | |
| 35 | static void env_mod_path (char *dirname, char **which_path); |
| 36 | |
| 37 | extern void _initialize_mi_cmd_env (void); |
| 38 | |
| 39 | static const char path_var_name[] = "PATH"; |
| 40 | static char *orig_path = NULL; |
| 41 | |
| 42 | /* The following is copied from mi-main.c so for m1 and below we can |
| 43 | perform old behavior and use cli commands. If ARGS is non-null, |
| 44 | append it to the CMD. */ |
| 45 | |
| 46 | static void |
| 47 | env_execute_cli_command (const char *cmd, const char *args) |
| 48 | { |
| 49 | if (cmd != 0) |
| 50 | { |
| 51 | struct cleanup *old_cleanups; |
| 52 | char *run; |
| 53 | |
| 54 | if (args != NULL) |
| 55 | run = xstrprintf ("%s %s", cmd, args); |
| 56 | else |
| 57 | run = xstrdup (cmd); |
| 58 | old_cleanups = make_cleanup (xfree, run); |
| 59 | execute_command ( /*ui */ run, 0 /*from_tty */ ); |
| 60 | do_cleanups (old_cleanups); |
| 61 | return; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | /* Print working directory. */ |
| 66 | |
| 67 | void |
| 68 | mi_cmd_env_pwd (char *command, char **argv, int argc) |
| 69 | { |
| 70 | struct ui_out *uiout = current_uiout; |
| 71 | |
| 72 | if (argc > 0) |
| 73 | error (_("-environment-pwd: No arguments allowed")); |
| 74 | |
| 75 | if (mi_version (uiout) < 2) |
| 76 | { |
| 77 | env_execute_cli_command ("pwd", NULL); |
| 78 | return; |
| 79 | } |
| 80 | |
| 81 | /* Otherwise the mi level is 2 or higher. */ |
| 82 | |
| 83 | if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf))) |
| 84 | error (_("-environment-pwd: error finding name of working directory: %s"), |
| 85 | safe_strerror (errno)); |
| 86 | |
| 87 | ui_out_field_string (uiout, "cwd", gdb_dirbuf); |
| 88 | } |
| 89 | |
| 90 | /* Change working directory. */ |
| 91 | |
| 92 | void |
| 93 | mi_cmd_env_cd (char *command, char **argv, int argc) |
| 94 | { |
| 95 | if (argc == 0 || argc > 1) |
| 96 | error (_("-environment-cd: Usage DIRECTORY")); |
| 97 | |
| 98 | env_execute_cli_command ("cd", argv[0]); |
| 99 | } |
| 100 | |
| 101 | static void |
| 102 | env_mod_path (char *dirname, char **which_path) |
| 103 | { |
| 104 | if (dirname == 0 || dirname[0] == '\0') |
| 105 | return; |
| 106 | |
| 107 | /* Call add_path with last arg 0 to indicate not to parse for |
| 108 | separator characters. */ |
| 109 | add_path (dirname, which_path, 0); |
| 110 | } |
| 111 | |
| 112 | /* Add one or more directories to start of executable search path. */ |
| 113 | |
| 114 | void |
| 115 | mi_cmd_env_path (char *command, char **argv, int argc) |
| 116 | { |
| 117 | struct ui_out *uiout = current_uiout; |
| 118 | char *exec_path; |
| 119 | char *env; |
| 120 | int reset = 0; |
| 121 | int oind = 0; |
| 122 | int i; |
| 123 | char *oarg; |
| 124 | enum opt |
| 125 | { |
| 126 | RESET_OPT |
| 127 | }; |
| 128 | static const struct mi_opt opts[] = |
| 129 | { |
| 130 | {"r", RESET_OPT, 0}, |
| 131 | { 0, 0, 0 } |
| 132 | }; |
| 133 | |
| 134 | dont_repeat (); |
| 135 | |
| 136 | if (mi_version (uiout) < 2) |
| 137 | { |
| 138 | for (i = argc - 1; i >= 0; --i) |
| 139 | env_execute_cli_command ("path", argv[i]); |
| 140 | return; |
| 141 | } |
| 142 | |
| 143 | /* Otherwise the mi level is 2 or higher. */ |
| 144 | while (1) |
| 145 | { |
| 146 | int opt = mi_getopt ("-environment-path", argc, argv, opts, |
| 147 | &oind, &oarg); |
| 148 | |
| 149 | if (opt < 0) |
| 150 | break; |
| 151 | switch ((enum opt) opt) |
| 152 | { |
| 153 | case RESET_OPT: |
| 154 | reset = 1; |
| 155 | break; |
| 156 | } |
| 157 | } |
| 158 | argv += oind; |
| 159 | argc -= oind; |
| 160 | |
| 161 | |
| 162 | if (reset) |
| 163 | { |
| 164 | /* Reset implies resetting to original path first. */ |
| 165 | exec_path = xstrdup (orig_path); |
| 166 | } |
| 167 | else |
| 168 | { |
| 169 | /* Otherwise, get current path to modify. */ |
| 170 | env = get_in_environ (current_inferior ()->environment, path_var_name); |
| 171 | |
| 172 | /* Can be null if path is not set. */ |
| 173 | if (!env) |
| 174 | env = ""; |
| 175 | exec_path = xstrdup (env); |
| 176 | } |
| 177 | |
| 178 | for (i = argc - 1; i >= 0; --i) |
| 179 | env_mod_path (argv[i], &exec_path); |
| 180 | |
| 181 | set_in_environ (current_inferior ()->environment, path_var_name, exec_path); |
| 182 | xfree (exec_path); |
| 183 | env = get_in_environ (current_inferior ()->environment, path_var_name); |
| 184 | ui_out_field_string (uiout, "path", env); |
| 185 | } |
| 186 | |
| 187 | /* Add zero or more directories to the front of the source path. */ |
| 188 | |
| 189 | void |
| 190 | mi_cmd_env_dir (char *command, char **argv, int argc) |
| 191 | { |
| 192 | struct ui_out *uiout = current_uiout; |
| 193 | int i; |
| 194 | int oind = 0; |
| 195 | int reset = 0; |
| 196 | char *oarg; |
| 197 | enum opt |
| 198 | { |
| 199 | RESET_OPT |
| 200 | }; |
| 201 | static const struct mi_opt opts[] = |
| 202 | { |
| 203 | {"r", RESET_OPT, 0}, |
| 204 | { 0, 0, 0 } |
| 205 | }; |
| 206 | |
| 207 | dont_repeat (); |
| 208 | |
| 209 | if (mi_version (uiout) < 2) |
| 210 | { |
| 211 | for (i = argc - 1; i >= 0; --i) |
| 212 | env_execute_cli_command ("dir", argv[i]); |
| 213 | return; |
| 214 | } |
| 215 | |
| 216 | /* Otherwise mi level is 2 or higher. */ |
| 217 | while (1) |
| 218 | { |
| 219 | int opt = mi_getopt ("-environment-directory", argc, argv, opts, |
| 220 | &oind, &oarg); |
| 221 | |
| 222 | if (opt < 0) |
| 223 | break; |
| 224 | switch ((enum opt) opt) |
| 225 | { |
| 226 | case RESET_OPT: |
| 227 | reset = 1; |
| 228 | break; |
| 229 | } |
| 230 | } |
| 231 | argv += oind; |
| 232 | argc -= oind; |
| 233 | |
| 234 | if (reset) |
| 235 | { |
| 236 | /* Reset means setting to default path first. */ |
| 237 | xfree (source_path); |
| 238 | init_source_path (); |
| 239 | } |
| 240 | |
| 241 | for (i = argc - 1; i >= 0; --i) |
| 242 | env_mod_path (argv[i], &source_path); |
| 243 | |
| 244 | ui_out_field_string (uiout, "source-path", source_path); |
| 245 | forget_cached_source_info (); |
| 246 | } |
| 247 | |
| 248 | /* Set the inferior terminal device name. */ |
| 249 | |
| 250 | void |
| 251 | mi_cmd_inferior_tty_set (char *command, char **argv, int argc) |
| 252 | { |
| 253 | set_inferior_io_terminal (argv[0]); |
| 254 | } |
| 255 | |
| 256 | /* Print the inferior terminal device name. */ |
| 257 | |
| 258 | void |
| 259 | mi_cmd_inferior_tty_show (char *command, char **argv, int argc) |
| 260 | { |
| 261 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
| 262 | |
| 263 | if ( !mi_valid_noargs ("-inferior-tty-show", argc, argv)) |
| 264 | error (_("-inferior-tty-show: Usage: No args")); |
| 265 | |
| 266 | if (inferior_io_terminal) |
| 267 | ui_out_field_string (current_uiout, |
| 268 | "inferior_tty_terminal", inferior_io_terminal); |
| 269 | } |
| 270 | |
| 271 | void |
| 272 | _initialize_mi_cmd_env (void) |
| 273 | { |
| 274 | struct gdb_environ *environment; |
| 275 | char *env; |
| 276 | |
| 277 | /* We want original execution path to reset to, if desired later. |
| 278 | At this point, current inferior is not created, so cannot use |
| 279 | current_inferior ()->environment. Also, there's no obvious |
| 280 | place where this code can be moved such that it surely run |
| 281 | before any code possibly mangles original PATH. */ |
| 282 | environment = make_environ (); |
| 283 | init_environ (environment); |
| 284 | env = get_in_environ (environment, path_var_name); |
| 285 | |
| 286 | /* Can be null if path is not set. */ |
| 287 | if (!env) |
| 288 | env = ""; |
| 289 | orig_path = xstrdup (env); |
| 290 | free_environ (environment); |
| 291 | } |