1 /* 2 * (C) Copyright 2000 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * Add to readline cmdline-editing by 6 * (C) Copyright 2005 7 * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com> 8 * 9 * See file CREDITS for list of people who contributed to this 10 * project. 11 * 12 * This program is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License as 14 * published by the Free Software Foundation; either version 2 of 15 * the License, or (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 25 * MA 02111-1307 USA 26 */ 27 28 /* #define DEBUG */ 29 30 #include <common.h> 31 #include <watchdog.h> 32 #include <command.h> 33 #include <fdtdec.h> 34 #include <malloc.h> 35 #include <version.h> 36 #ifdef CONFIG_MODEM_SUPPORT 37 #include <malloc.h> /* for free() prototype */ 38 #endif 39 40 #ifdef CONFIG_SYS_HUSH_PARSER 41 #include <hush.h> 42 #endif 43 44 #ifdef CONFIG_OF_CONTROL 45 #include <fdtdec.h> 46 #endif 47 48 #ifdef CONFIG_OF_LIBFDT 49 #include <fdt_support.h> 50 #endif /* CONFIG_OF_LIBFDT */ 51 52 #include <post.h> 53 #include <linux/ctype.h> 54 #include <menu.h> 55 56 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST) || defined(CONFIG_CMDLINE_EDITING) 57 DECLARE_GLOBAL_DATA_PTR; 58 #endif 59 60 /* 61 * Board-specific Platform code can reimplement show_boot_progress () if needed 62 */ 63 void inline __show_boot_progress (int val) {} 64 void show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress"))); 65 66 #if defined(CONFIG_UPDATE_TFTP) 67 int update_tftp (ulong addr); 68 #endif /* CONFIG_UPDATE_TFTP */ 69 70 #define MAX_DELAY_STOP_STR 32 71 72 #undef DEBUG_PARSER 73 74 char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */ 75 76 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen); 77 static const char erase_seq[] = "\b \b"; /* erase sequence */ 78 static const char tab_seq[] = " "; /* used to expand TABs */ 79 80 #ifdef CONFIG_BOOT_RETRY_TIME 81 static uint64_t endtime = 0; /* must be set, default is instant timeout */ 82 static int retry_time = -1; /* -1 so can call readline before main_loop */ 83 #endif 84 85 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk()) 86 87 #ifndef CONFIG_BOOT_RETRY_MIN 88 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME 89 #endif 90 91 #ifdef CONFIG_MODEM_SUPPORT 92 int do_mdm_init = 0; 93 extern void mdm_init(void); /* defined in board.c */ 94 #endif 95 96 /*************************************************************************** 97 * Watch for 'delay' seconds for autoboot stop or autoboot delay string. 98 * returns: 0 - no key string, allow autoboot 1 - got key string, abort 99 */ 100 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 101 # if defined(CONFIG_AUTOBOOT_KEYED) 102 #ifndef CONFIG_MENU 103 static inline 104 #endif 105 int abortboot(int bootdelay) 106 { 107 int abort = 0; 108 uint64_t etime = endtick(bootdelay); 109 struct { 110 char* str; 111 u_int len; 112 int retry; 113 } 114 delaykey [] = { 115 { str: getenv ("bootdelaykey"), retry: 1 }, 116 { str: getenv ("bootdelaykey2"), retry: 1 }, 117 { str: getenv ("bootstopkey"), retry: 0 }, 118 { str: getenv ("bootstopkey2"), retry: 0 }, 119 }; 120 121 char presskey [MAX_DELAY_STOP_STR]; 122 u_int presskey_len = 0; 123 u_int presskey_max = 0; 124 u_int i; 125 126 #ifndef CONFIG_ZERO_BOOTDELAY_CHECK 127 if (bootdelay == 0) 128 return 0; 129 #endif 130 131 # ifdef CONFIG_AUTOBOOT_PROMPT 132 printf(CONFIG_AUTOBOOT_PROMPT); 133 # endif 134 135 # ifdef CONFIG_AUTOBOOT_DELAY_STR 136 if (delaykey[0].str == NULL) 137 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; 138 # endif 139 # ifdef CONFIG_AUTOBOOT_DELAY_STR2 140 if (delaykey[1].str == NULL) 141 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; 142 # endif 143 # ifdef CONFIG_AUTOBOOT_STOP_STR 144 if (delaykey[2].str == NULL) 145 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; 146 # endif 147 # ifdef CONFIG_AUTOBOOT_STOP_STR2 148 if (delaykey[3].str == NULL) 149 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; 150 # endif 151 152 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 153 delaykey[i].len = delaykey[i].str == NULL ? 154 0 : strlen (delaykey[i].str); 155 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? 156 MAX_DELAY_STOP_STR : delaykey[i].len; 157 158 presskey_max = presskey_max > delaykey[i].len ? 159 presskey_max : delaykey[i].len; 160 161 # if DEBUG_BOOTKEYS 162 printf("%s key:<%s>\n", 163 delaykey[i].retry ? "delay" : "stop", 164 delaykey[i].str ? delaykey[i].str : "NULL"); 165 # endif 166 } 167 168 /* In order to keep up with incoming data, check timeout only 169 * when catch up. 170 */ 171 do { 172 if (tstc()) { 173 if (presskey_len < presskey_max) { 174 presskey [presskey_len ++] = getc(); 175 } 176 else { 177 for (i = 0; i < presskey_max - 1; i ++) 178 presskey [i] = presskey [i + 1]; 179 180 presskey [i] = getc(); 181 } 182 } 183 184 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 185 if (delaykey[i].len > 0 && 186 presskey_len >= delaykey[i].len && 187 memcmp (presskey + presskey_len - delaykey[i].len, 188 delaykey[i].str, 189 delaykey[i].len) == 0) { 190 # if DEBUG_BOOTKEYS 191 printf("got %skey\n", 192 delaykey[i].retry ? "delay" : "stop"); 193 # endif 194 195 # ifdef CONFIG_BOOT_RETRY_TIME 196 /* don't retry auto boot */ 197 if (! delaykey[i].retry) 198 retry_time = -1; 199 # endif 200 abort = 1; 201 } 202 } 203 } while (!abort && get_ticks() <= etime); 204 205 # if DEBUG_BOOTKEYS 206 if (!abort) 207 puts("key timeout\n"); 208 # endif 209 210 #ifdef CONFIG_SILENT_CONSOLE 211 if (abort) 212 gd->flags &= ~GD_FLG_SILENT; 213 #endif 214 215 return abort; 216 } 217 218 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ 219 220 #ifdef CONFIG_MENUKEY 221 static int menukey = 0; 222 #endif 223 224 #ifndef CONFIG_MENU 225 static inline 226 #endif 227 int abortboot(int bootdelay) 228 { 229 int abort = 0; 230 231 #ifdef CONFIG_MENUPROMPT 232 printf(CONFIG_MENUPROMPT); 233 #else 234 if (bootdelay >= 0) 235 printf("Hit any key to stop autoboot: %2d ", bootdelay); 236 #endif 237 238 #if defined CONFIG_ZERO_BOOTDELAY_CHECK 239 /* 240 * Check if key already pressed 241 * Don't check if bootdelay < 0 242 */ 243 if (bootdelay >= 0) { 244 if (tstc()) { /* we got a key press */ 245 (void) getc(); /* consume input */ 246 puts ("\b\b\b 0"); 247 abort = 1; /* don't auto boot */ 248 } 249 } 250 #endif 251 252 while ((bootdelay > 0) && (!abort)) { 253 int i; 254 255 --bootdelay; 256 /* delay 100 * 10ms */ 257 for (i=0; !abort && i<100; ++i) { 258 if (tstc()) { /* we got a key press */ 259 abort = 1; /* don't auto boot */ 260 bootdelay = 0; /* no more delay */ 261 # ifdef CONFIG_MENUKEY 262 menukey = getc(); 263 # else 264 (void) getc(); /* consume input */ 265 # endif 266 break; 267 } 268 udelay(10000); 269 } 270 271 printf("\b\b\b%2d ", bootdelay); 272 } 273 274 putc('\n'); 275 276 #ifdef CONFIG_SILENT_CONSOLE 277 if (abort) 278 gd->flags &= ~GD_FLG_SILENT; 279 #endif 280 281 return abort; 282 } 283 # endif /* CONFIG_AUTOBOOT_KEYED */ 284 #endif /* CONFIG_BOOTDELAY >= 0 */ 285 286 /* 287 * Runs the given boot command securely. Specifically: 288 * - Doesn't run the command with the shell (run_command or parse_string_outer), 289 * since that's a lot of code surface that an attacker might exploit. 290 * Because of this, we don't do any argument parsing--the secure boot command 291 * has to be a full-fledged u-boot command. 292 * - Doesn't check for keypresses before booting, since that could be a 293 * security hole; also disables Ctrl-C. 294 * - Doesn't allow the command to return. 295 * 296 * Upon any failures, this function will drop into an infinite loop after 297 * printing the error message to console. 298 */ 299 300 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) && \ 301 defined(CONFIG_OF_CONTROL) 302 static void secure_boot_cmd(char *cmd) 303 { 304 cmd_tbl_t *cmdtp; 305 int rc; 306 307 if (!cmd) { 308 printf("## Error: Secure boot command not specified\n"); 309 goto err; 310 } 311 312 /* Disable Ctrl-C just in case some command is used that checks it. */ 313 disable_ctrlc(1); 314 315 /* Find the command directly. */ 316 cmdtp = find_cmd(cmd); 317 if (!cmdtp) { 318 printf("## Error: \"%s\" not defined\n", cmd); 319 goto err; 320 } 321 322 /* Run the command, forcing no flags and faking argc and argv. */ 323 rc = (cmdtp->cmd)(cmdtp, 0, 1, &cmd); 324 325 /* Shouldn't ever return from boot command. */ 326 printf("## Error: \"%s\" returned (code %d)\n", cmd, rc); 327 328 err: 329 /* 330 * Not a whole lot to do here. Rebooting won't help much, since we'll 331 * just end up right back here. Just loop. 332 */ 333 hang(); 334 } 335 336 #endif /* CONFIG_OF_CONTROL */ 337 338 339 /****************************************************************************/ 340 341 void main_loop (void) 342 { 343 #ifndef CONFIG_SYS_HUSH_PARSER 344 static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, }; 345 int len; 346 int rc = 1; 347 int flag; 348 #endif 349 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) && \ 350 defined(CONFIG_OF_CONTROL) 351 char *env; 352 #endif 353 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 354 char *s; 355 int bootdelay; 356 #endif 357 #ifdef CONFIG_PREBOOT 358 char *p; 359 #endif 360 #ifdef CONFIG_BOOTCOUNT_LIMIT 361 unsigned long bootcount = 0; 362 unsigned long bootlimit = 0; 363 char *bcs; 364 char bcs_set[16]; 365 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 366 367 #ifdef CONFIG_BOOTCOUNT_LIMIT 368 bootcount = bootcount_load(); 369 bootcount++; 370 bootcount_store (bootcount); 371 sprintf (bcs_set, "%lu", bootcount); 372 setenv ("bootcount", bcs_set); 373 bcs = getenv ("bootlimit"); 374 bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0; 375 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 376 377 #ifdef CONFIG_MODEM_SUPPORT 378 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); 379 if (do_mdm_init) { 380 char *str = strdup(getenv("mdm_cmd")); 381 setenv ("preboot", str); /* set or delete definition */ 382 if (str != NULL) 383 free (str); 384 mdm_init(); /* wait for modem connection */ 385 } 386 #endif /* CONFIG_MODEM_SUPPORT */ 387 388 #ifdef CONFIG_VERSION_VARIABLE 389 { 390 setenv ("ver", version_string); /* set version variable */ 391 } 392 #endif /* CONFIG_VERSION_VARIABLE */ 393 394 #ifdef CONFIG_SYS_HUSH_PARSER 395 u_boot_hush_start (); 396 #endif 397 398 #if defined(CONFIG_HUSH_INIT_VAR) 399 hush_init_var (); 400 #endif 401 402 #ifdef CONFIG_PREBOOT 403 if ((p = getenv ("preboot")) != NULL) { 404 # ifdef CONFIG_AUTOBOOT_KEYED 405 int prev = disable_ctrlc(1); /* disable Control C checking */ 406 # endif 407 408 run_command_list(p, -1, 0); 409 410 # ifdef CONFIG_AUTOBOOT_KEYED 411 disable_ctrlc(prev); /* restore Control C checking */ 412 # endif 413 } 414 #endif /* CONFIG_PREBOOT */ 415 416 #if defined(CONFIG_UPDATE_TFTP) 417 update_tftp (0UL); 418 #endif /* CONFIG_UPDATE_TFTP */ 419 420 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 421 s = getenv ("bootdelay"); 422 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; 423 424 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); 425 426 #if defined(CONFIG_MENU_SHOW) 427 bootdelay = menu_show(bootdelay); 428 #endif 429 # ifdef CONFIG_BOOT_RETRY_TIME 430 init_cmd_timeout (); 431 # endif /* CONFIG_BOOT_RETRY_TIME */ 432 433 #ifdef CONFIG_POST 434 if (gd->flags & GD_FLG_POSTFAIL) { 435 s = getenv("failbootcmd"); 436 } 437 else 438 #endif /* CONFIG_POST */ 439 #ifdef CONFIG_BOOTCOUNT_LIMIT 440 if (bootlimit && (bootcount > bootlimit)) { 441 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", 442 (unsigned)bootlimit); 443 s = getenv ("altbootcmd"); 444 } 445 else 446 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 447 s = getenv ("bootcmd"); 448 #ifdef CONFIG_OF_CONTROL 449 /* Allow the fdt to override the boot command */ 450 env = fdtdec_get_config_string(gd->fdt_blob, "bootcmd"); 451 if (env) 452 s = env; 453 454 /* 455 * If the bootsecure option was chosen, use secure_boot_cmd(). 456 * Always use 'env' in this case, since bootsecure requres that the 457 * bootcmd was specified in the FDT too. 458 */ 459 if (fdtdec_get_config_int(gd->fdt_blob, "bootsecure", 0)) 460 secure_boot_cmd(env); 461 462 #endif /* CONFIG_OF_CONTROL */ 463 464 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); 465 466 if (bootdelay != -1 && s && !abortboot(bootdelay)) { 467 # ifdef CONFIG_AUTOBOOT_KEYED 468 int prev = disable_ctrlc(1); /* disable Control C checking */ 469 # endif 470 471 run_command_list(s, -1, 0); 472 473 # ifdef CONFIG_AUTOBOOT_KEYED 474 disable_ctrlc(prev); /* restore Control C checking */ 475 # endif 476 } 477 478 # ifdef CONFIG_MENUKEY 479 if (menukey == CONFIG_MENUKEY) { 480 s = getenv("menucmd"); 481 if (s) 482 run_command_list(s, -1, 0); 483 } 484 #endif /* CONFIG_MENUKEY */ 485 #endif /* CONFIG_BOOTDELAY */ 486 487 #if defined CONFIG_OF_CONTROL 488 set_working_fdt_addr((void *)gd->fdt_blob); 489 #endif /* CONFIG_OF_CONTROL */ 490 491 /* 492 * Main Loop for Monitor Command Processing 493 */ 494 #ifdef CONFIG_SYS_HUSH_PARSER 495 parse_file_outer(); 496 /* This point is never reached */ 497 for (;;); 498 #else 499 for (;;) { 500 #ifdef CONFIG_BOOT_RETRY_TIME 501 if (rc >= 0) { 502 /* Saw enough of a valid command to 503 * restart the timeout. 504 */ 505 reset_cmd_timeout(); 506 } 507 #endif 508 len = readline (CONFIG_SYS_PROMPT); 509 510 flag = 0; /* assume no special flags for now */ 511 if (len > 0) 512 strcpy (lastcommand, console_buffer); 513 else if (len == 0) 514 flag |= CMD_FLAG_REPEAT; 515 #ifdef CONFIG_BOOT_RETRY_TIME 516 else if (len == -2) { 517 /* -2 means timed out, retry autoboot 518 */ 519 puts ("\nTimed out waiting for command\n"); 520 # ifdef CONFIG_RESET_TO_RETRY 521 /* Reinit board to run initialization code again */ 522 do_reset (NULL, 0, 0, NULL); 523 # else 524 return; /* retry autoboot */ 525 # endif 526 } 527 #endif 528 529 if (len == -1) 530 puts ("<INTERRUPT>\n"); 531 else 532 rc = run_command(lastcommand, flag); 533 534 if (rc <= 0) { 535 /* invalid command or not repeatable, forget it */ 536 lastcommand[0] = 0; 537 } 538 } 539 #endif /*CONFIG_SYS_HUSH_PARSER*/ 540 } 541 542 #ifdef CONFIG_BOOT_RETRY_TIME 543 /*************************************************************************** 544 * initialize command line timeout 545 */ 546 void init_cmd_timeout(void) 547 { 548 char *s = getenv ("bootretry"); 549 550 if (s != NULL) 551 retry_time = (int)simple_strtol(s, NULL, 10); 552 else 553 retry_time = CONFIG_BOOT_RETRY_TIME; 554 555 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 556 retry_time = CONFIG_BOOT_RETRY_MIN; 557 } 558 559 /*************************************************************************** 560 * reset command line timeout to retry_time seconds 561 */ 562 void reset_cmd_timeout(void) 563 { 564 endtime = endtick(retry_time); 565 } 566 #endif 567 568 #ifdef CONFIG_CMDLINE_EDITING 569 570 /* 571 * cmdline-editing related codes from vivi. 572 * Author: Janghoon Lyu <nandy@mizi.com> 573 */ 574 575 #define putnstr(str,n) do { \ 576 printf ("%.*s", (int)n, str); \ 577 } while (0) 578 579 #define CTL_CH(c) ((c) - 'a' + 1) 580 #define CTL_BACKSPACE ('\b') 581 #define DEL ((char)255) 582 #define DEL7 ((char)127) 583 #define CREAD_HIST_CHAR ('!') 584 585 #define getcmd_putch(ch) putc(ch) 586 #define getcmd_getch() getc() 587 #define getcmd_cbeep() getcmd_putch('\a') 588 589 #define HIST_MAX 20 590 #define HIST_SIZE CONFIG_SYS_CBSIZE 591 592 static int hist_max; 593 static int hist_add_idx; 594 static int hist_cur = -1; 595 static unsigned hist_num; 596 597 static char *hist_list[HIST_MAX]; 598 static char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */ 599 600 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1) 601 602 static void hist_init(void) 603 { 604 int i; 605 606 hist_max = 0; 607 hist_add_idx = 0; 608 hist_cur = -1; 609 hist_num = 0; 610 611 for (i = 0; i < HIST_MAX; i++) { 612 hist_list[i] = hist_lines[i]; 613 hist_list[i][0] = '\0'; 614 } 615 } 616 617 static void cread_add_to_hist(char *line) 618 { 619 strcpy(hist_list[hist_add_idx], line); 620 621 if (++hist_add_idx >= HIST_MAX) 622 hist_add_idx = 0; 623 624 if (hist_add_idx > hist_max) 625 hist_max = hist_add_idx; 626 627 hist_num++; 628 } 629 630 static char* hist_prev(void) 631 { 632 char *ret; 633 int old_cur; 634 635 if (hist_cur < 0) 636 return NULL; 637 638 old_cur = hist_cur; 639 if (--hist_cur < 0) 640 hist_cur = hist_max; 641 642 if (hist_cur == hist_add_idx) { 643 hist_cur = old_cur; 644 ret = NULL; 645 } else 646 ret = hist_list[hist_cur]; 647 648 return (ret); 649 } 650 651 static char* hist_next(void) 652 { 653 char *ret; 654 655 if (hist_cur < 0) 656 return NULL; 657 658 if (hist_cur == hist_add_idx) 659 return NULL; 660 661 if (++hist_cur > hist_max) 662 hist_cur = 0; 663 664 if (hist_cur == hist_add_idx) { 665 ret = ""; 666 } else 667 ret = hist_list[hist_cur]; 668 669 return (ret); 670 } 671 672 #ifndef CONFIG_CMDLINE_EDITING 673 static void cread_print_hist_list(void) 674 { 675 int i; 676 unsigned long n; 677 678 n = hist_num - hist_max; 679 680 i = hist_add_idx + 1; 681 while (1) { 682 if (i > hist_max) 683 i = 0; 684 if (i == hist_add_idx) 685 break; 686 printf("%s\n", hist_list[i]); 687 n++; 688 i++; 689 } 690 } 691 #endif /* CONFIG_CMDLINE_EDITING */ 692 693 #define BEGINNING_OF_LINE() { \ 694 while (num) { \ 695 getcmd_putch(CTL_BACKSPACE); \ 696 num--; \ 697 } \ 698 } 699 700 #define ERASE_TO_EOL() { \ 701 if (num < eol_num) { \ 702 printf("%*s", (int)(eol_num - num), ""); \ 703 do { \ 704 getcmd_putch(CTL_BACKSPACE); \ 705 } while (--eol_num > num); \ 706 } \ 707 } 708 709 #define REFRESH_TO_EOL() { \ 710 if (num < eol_num) { \ 711 wlen = eol_num - num; \ 712 putnstr(buf + num, wlen); \ 713 num = eol_num; \ 714 } \ 715 } 716 717 static void cread_add_char(char ichar, int insert, unsigned long *num, 718 unsigned long *eol_num, char *buf, unsigned long len) 719 { 720 unsigned long wlen; 721 722 /* room ??? */ 723 if (insert || *num == *eol_num) { 724 if (*eol_num > len - 1) { 725 getcmd_cbeep(); 726 return; 727 } 728 (*eol_num)++; 729 } 730 731 if (insert) { 732 wlen = *eol_num - *num; 733 if (wlen > 1) { 734 memmove(&buf[*num+1], &buf[*num], wlen-1); 735 } 736 737 buf[*num] = ichar; 738 putnstr(buf + *num, wlen); 739 (*num)++; 740 while (--wlen) { 741 getcmd_putch(CTL_BACKSPACE); 742 } 743 } else { 744 /* echo the character */ 745 wlen = 1; 746 buf[*num] = ichar; 747 putnstr(buf + *num, wlen); 748 (*num)++; 749 } 750 } 751 752 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num, 753 unsigned long *eol_num, char *buf, unsigned long len) 754 { 755 while (strsize--) { 756 cread_add_char(*str, insert, num, eol_num, buf, len); 757 str++; 758 } 759 } 760 761 static int cread_line(const char *const prompt, char *buf, unsigned int *len, 762 int timeout) 763 { 764 unsigned long num = 0; 765 unsigned long eol_num = 0; 766 unsigned long wlen; 767 char ichar; 768 int insert = 1; 769 int esc_len = 0; 770 char esc_save[8]; 771 int init_len = strlen(buf); 772 int first = 1; 773 774 if (init_len) 775 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len); 776 777 while (1) { 778 #ifdef CONFIG_BOOT_RETRY_TIME 779 while (!tstc()) { /* while no incoming data */ 780 if (retry_time >= 0 && get_ticks() > endtime) 781 return (-2); /* timed out */ 782 WATCHDOG_RESET(); 783 } 784 #endif 785 if (first && timeout) { 786 uint64_t etime = endtick(timeout); 787 788 while (!tstc()) { /* while no incoming data */ 789 if (get_ticks() >= etime) 790 return -2; /* timed out */ 791 WATCHDOG_RESET(); 792 } 793 first = 0; 794 } 795 796 ichar = getcmd_getch(); 797 798 if ((ichar == '\n') || (ichar == '\r')) { 799 putc('\n'); 800 break; 801 } 802 803 /* 804 * handle standard linux xterm esc sequences for arrow key, etc. 805 */ 806 if (esc_len != 0) { 807 if (esc_len == 1) { 808 if (ichar == '[') { 809 esc_save[esc_len] = ichar; 810 esc_len = 2; 811 } else { 812 cread_add_str(esc_save, esc_len, insert, 813 &num, &eol_num, buf, *len); 814 esc_len = 0; 815 } 816 continue; 817 } 818 819 switch (ichar) { 820 821 case 'D': /* <- key */ 822 ichar = CTL_CH('b'); 823 esc_len = 0; 824 break; 825 case 'C': /* -> key */ 826 ichar = CTL_CH('f'); 827 esc_len = 0; 828 break; /* pass off to ^F handler */ 829 case 'H': /* Home key */ 830 ichar = CTL_CH('a'); 831 esc_len = 0; 832 break; /* pass off to ^A handler */ 833 case 'A': /* up arrow */ 834 ichar = CTL_CH('p'); 835 esc_len = 0; 836 break; /* pass off to ^P handler */ 837 case 'B': /* down arrow */ 838 ichar = CTL_CH('n'); 839 esc_len = 0; 840 break; /* pass off to ^N handler */ 841 default: 842 esc_save[esc_len++] = ichar; 843 cread_add_str(esc_save, esc_len, insert, 844 &num, &eol_num, buf, *len); 845 esc_len = 0; 846 continue; 847 } 848 } 849 850 switch (ichar) { 851 case 0x1b: 852 if (esc_len == 0) { 853 esc_save[esc_len] = ichar; 854 esc_len = 1; 855 } else { 856 puts("impossible condition #876\n"); 857 esc_len = 0; 858 } 859 break; 860 861 case CTL_CH('a'): 862 BEGINNING_OF_LINE(); 863 break; 864 case CTL_CH('c'): /* ^C - break */ 865 *buf = '\0'; /* discard input */ 866 return (-1); 867 case CTL_CH('f'): 868 if (num < eol_num) { 869 getcmd_putch(buf[num]); 870 num++; 871 } 872 break; 873 case CTL_CH('b'): 874 if (num) { 875 getcmd_putch(CTL_BACKSPACE); 876 num--; 877 } 878 break; 879 case CTL_CH('d'): 880 if (num < eol_num) { 881 wlen = eol_num - num - 1; 882 if (wlen) { 883 memmove(&buf[num], &buf[num+1], wlen); 884 putnstr(buf + num, wlen); 885 } 886 887 getcmd_putch(' '); 888 do { 889 getcmd_putch(CTL_BACKSPACE); 890 } while (wlen--); 891 eol_num--; 892 } 893 break; 894 case CTL_CH('k'): 895 ERASE_TO_EOL(); 896 break; 897 case CTL_CH('e'): 898 REFRESH_TO_EOL(); 899 break; 900 case CTL_CH('o'): 901 insert = !insert; 902 break; 903 case CTL_CH('x'): 904 case CTL_CH('u'): 905 BEGINNING_OF_LINE(); 906 ERASE_TO_EOL(); 907 break; 908 case DEL: 909 case DEL7: 910 case 8: 911 if (num) { 912 wlen = eol_num - num; 913 num--; 914 memmove(&buf[num], &buf[num+1], wlen); 915 getcmd_putch(CTL_BACKSPACE); 916 putnstr(buf + num, wlen); 917 getcmd_putch(' '); 918 do { 919 getcmd_putch(CTL_BACKSPACE); 920 } while (wlen--); 921 eol_num--; 922 } 923 break; 924 case CTL_CH('p'): 925 case CTL_CH('n'): 926 { 927 char * hline; 928 929 esc_len = 0; 930 931 if (ichar == CTL_CH('p')) 932 hline = hist_prev(); 933 else 934 hline = hist_next(); 935 936 if (!hline) { 937 getcmd_cbeep(); 938 continue; 939 } 940 941 /* nuke the current line */ 942 /* first, go home */ 943 BEGINNING_OF_LINE(); 944 945 /* erase to end of line */ 946 ERASE_TO_EOL(); 947 948 /* copy new line into place and display */ 949 strcpy(buf, hline); 950 eol_num = strlen(buf); 951 REFRESH_TO_EOL(); 952 continue; 953 } 954 #ifdef CONFIG_AUTO_COMPLETE 955 case '\t': { 956 int num2, col; 957 958 /* do not autocomplete when in the middle */ 959 if (num < eol_num) { 960 getcmd_cbeep(); 961 break; 962 } 963 964 buf[num] = '\0'; 965 col = strlen(prompt) + eol_num; 966 num2 = num; 967 if (cmd_auto_complete(prompt, buf, &num2, &col)) { 968 col = num2 - num; 969 num += col; 970 eol_num += col; 971 } 972 break; 973 } 974 #endif 975 default: 976 cread_add_char(ichar, insert, &num, &eol_num, buf, *len); 977 break; 978 } 979 } 980 *len = eol_num; 981 buf[eol_num] = '\0'; /* lose the newline */ 982 983 if (buf[0] && buf[0] != CREAD_HIST_CHAR) 984 cread_add_to_hist(buf); 985 hist_cur = hist_add_idx; 986 987 return 0; 988 } 989 990 #endif /* CONFIG_CMDLINE_EDITING */ 991 992 /****************************************************************************/ 993 994 /* 995 * Prompt for input and read a line. 996 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, 997 * time out when time goes past endtime (timebase time in ticks). 998 * Return: number of read characters 999 * -1 if break 1000 * -2 if timed out 1001 */ 1002 int readline (const char *const prompt) 1003 { 1004 /* 1005 * If console_buffer isn't 0-length the user will be prompted to modify 1006 * it instead of entering it from scratch as desired. 1007 */ 1008 console_buffer[0] = '\0'; 1009 1010 return readline_into_buffer(prompt, console_buffer, 0); 1011 } 1012 1013 1014 int readline_into_buffer(const char *const prompt, char *buffer, int timeout) 1015 { 1016 char *p = buffer; 1017 #ifdef CONFIG_CMDLINE_EDITING 1018 unsigned int len = CONFIG_SYS_CBSIZE; 1019 int rc; 1020 static int initted = 0; 1021 1022 /* 1023 * History uses a global array which is not 1024 * writable until after relocation to RAM. 1025 * Revert to non-history version if still 1026 * running from flash. 1027 */ 1028 if (gd->flags & GD_FLG_RELOC) { 1029 if (!initted) { 1030 hist_init(); 1031 initted = 1; 1032 } 1033 1034 if (prompt) 1035 puts (prompt); 1036 1037 rc = cread_line(prompt, p, &len, timeout); 1038 return rc < 0 ? rc : len; 1039 1040 } else { 1041 #endif /* CONFIG_CMDLINE_EDITING */ 1042 char * p_buf = p; 1043 int n = 0; /* buffer index */ 1044 int plen = 0; /* prompt length */ 1045 int col; /* output column cnt */ 1046 char c; 1047 1048 /* print prompt */ 1049 if (prompt) { 1050 plen = strlen (prompt); 1051 puts (prompt); 1052 } 1053 col = plen; 1054 1055 for (;;) { 1056 #ifdef CONFIG_BOOT_RETRY_TIME 1057 while (!tstc()) { /* while no incoming data */ 1058 if (retry_time >= 0 && get_ticks() > endtime) 1059 return (-2); /* timed out */ 1060 WATCHDOG_RESET(); 1061 } 1062 #endif 1063 WATCHDOG_RESET(); /* Trigger watchdog, if needed */ 1064 1065 #ifdef CONFIG_SHOW_ACTIVITY 1066 while (!tstc()) { 1067 show_activity(0); 1068 WATCHDOG_RESET(); 1069 } 1070 #endif 1071 c = getc(); 1072 1073 /* 1074 * Special character handling 1075 */ 1076 switch (c) { 1077 case '\r': /* Enter */ 1078 case '\n': 1079 *p = '\0'; 1080 puts ("\r\n"); 1081 return (p - p_buf); 1082 1083 case '\0': /* nul */ 1084 continue; 1085 1086 case 0x03: /* ^C - break */ 1087 p_buf[0] = '\0'; /* discard input */ 1088 return (-1); 1089 1090 case 0x15: /* ^U - erase line */ 1091 while (col > plen) { 1092 puts (erase_seq); 1093 --col; 1094 } 1095 p = p_buf; 1096 n = 0; 1097 continue; 1098 1099 case 0x17: /* ^W - erase word */ 1100 p=delete_char(p_buf, p, &col, &n, plen); 1101 while ((n > 0) && (*p != ' ')) { 1102 p=delete_char(p_buf, p, &col, &n, plen); 1103 } 1104 continue; 1105 1106 case 0x08: /* ^H - backspace */ 1107 case 0x7F: /* DEL - backspace */ 1108 p=delete_char(p_buf, p, &col, &n, plen); 1109 continue; 1110 1111 default: 1112 /* 1113 * Must be a normal character then 1114 */ 1115 if (n < CONFIG_SYS_CBSIZE-2) { 1116 if (c == '\t') { /* expand TABs */ 1117 #ifdef CONFIG_AUTO_COMPLETE 1118 /* if auto completion triggered just continue */ 1119 *p = '\0'; 1120 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) { 1121 p = p_buf + n; /* reset */ 1122 continue; 1123 } 1124 #endif 1125 puts (tab_seq+(col&07)); 1126 col += 8 - (col&07); 1127 } else { 1128 ++col; /* echo input */ 1129 putc (c); 1130 } 1131 *p++ = c; 1132 ++n; 1133 } else { /* Buffer full */ 1134 putc ('\a'); 1135 } 1136 } 1137 } 1138 #ifdef CONFIG_CMDLINE_EDITING 1139 } 1140 #endif 1141 } 1142 1143 /****************************************************************************/ 1144 1145 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) 1146 { 1147 char *s; 1148 1149 if (*np == 0) { 1150 return (p); 1151 } 1152 1153 if (*(--p) == '\t') { /* will retype the whole line */ 1154 while (*colp > plen) { 1155 puts (erase_seq); 1156 (*colp)--; 1157 } 1158 for (s=buffer; s<p; ++s) { 1159 if (*s == '\t') { 1160 puts (tab_seq+((*colp) & 07)); 1161 *colp += 8 - ((*colp) & 07); 1162 } else { 1163 ++(*colp); 1164 putc (*s); 1165 } 1166 } 1167 } else { 1168 puts (erase_seq); 1169 (*colp)--; 1170 } 1171 (*np)--; 1172 return (p); 1173 } 1174 1175 /****************************************************************************/ 1176 1177 int parse_line (char *line, char *argv[]) 1178 { 1179 int nargs = 0; 1180 1181 #ifdef DEBUG_PARSER 1182 printf ("parse_line: \"%s\"\n", line); 1183 #endif 1184 while (nargs < CONFIG_SYS_MAXARGS) { 1185 1186 /* skip any white space */ 1187 while (isblank(*line)) 1188 ++line; 1189 1190 if (*line == '\0') { /* end of line, no more args */ 1191 argv[nargs] = NULL; 1192 #ifdef DEBUG_PARSER 1193 printf ("parse_line: nargs=%d\n", nargs); 1194 #endif 1195 return (nargs); 1196 } 1197 1198 argv[nargs++] = line; /* begin of argument string */ 1199 1200 /* find end of string */ 1201 while (*line && !isblank(*line)) 1202 ++line; 1203 1204 if (*line == '\0') { /* end of line, no more args */ 1205 argv[nargs] = NULL; 1206 #ifdef DEBUG_PARSER 1207 printf ("parse_line: nargs=%d\n", nargs); 1208 #endif 1209 return (nargs); 1210 } 1211 1212 *line++ = '\0'; /* terminate current arg */ 1213 } 1214 1215 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS); 1216 1217 #ifdef DEBUG_PARSER 1218 printf ("parse_line: nargs=%d\n", nargs); 1219 #endif 1220 return (nargs); 1221 } 1222 1223 /****************************************************************************/ 1224 1225 #ifndef CONFIG_SYS_HUSH_PARSER 1226 static void process_macros (const char *input, char *output) 1227 { 1228 char c, prev; 1229 const char *varname_start = NULL; 1230 int inputcnt = strlen (input); 1231 int outputcnt = CONFIG_SYS_CBSIZE; 1232 int state = 0; /* 0 = waiting for '$' */ 1233 1234 /* 1 = waiting for '(' or '{' */ 1235 /* 2 = waiting for ')' or '}' */ 1236 /* 3 = waiting for ''' */ 1237 #ifdef DEBUG_PARSER 1238 char *output_start = output; 1239 1240 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input), 1241 input); 1242 #endif 1243 1244 prev = '\0'; /* previous character */ 1245 1246 while (inputcnt && outputcnt) { 1247 c = *input++; 1248 inputcnt--; 1249 1250 if (state != 3) { 1251 /* remove one level of escape characters */ 1252 if ((c == '\\') && (prev != '\\')) { 1253 if (inputcnt-- == 0) 1254 break; 1255 prev = c; 1256 c = *input++; 1257 } 1258 } 1259 1260 switch (state) { 1261 case 0: /* Waiting for (unescaped) $ */ 1262 if ((c == '\'') && (prev != '\\')) { 1263 state = 3; 1264 break; 1265 } 1266 if ((c == '$') && (prev != '\\')) { 1267 state++; 1268 } else { 1269 *(output++) = c; 1270 outputcnt--; 1271 } 1272 break; 1273 case 1: /* Waiting for ( */ 1274 if (c == '(' || c == '{') { 1275 state++; 1276 varname_start = input; 1277 } else { 1278 state = 0; 1279 *(output++) = '$'; 1280 outputcnt--; 1281 1282 if (outputcnt) { 1283 *(output++) = c; 1284 outputcnt--; 1285 } 1286 } 1287 break; 1288 case 2: /* Waiting for ) */ 1289 if (c == ')' || c == '}') { 1290 int i; 1291 char envname[CONFIG_SYS_CBSIZE], *envval; 1292 int envcnt = input - varname_start - 1; /* Varname # of chars */ 1293 1294 /* Get the varname */ 1295 for (i = 0; i < envcnt; i++) { 1296 envname[i] = varname_start[i]; 1297 } 1298 envname[i] = 0; 1299 1300 /* Get its value */ 1301 envval = getenv (envname); 1302 1303 /* Copy into the line if it exists */ 1304 if (envval != NULL) 1305 while ((*envval) && outputcnt) { 1306 *(output++) = *(envval++); 1307 outputcnt--; 1308 } 1309 /* Look for another '$' */ 1310 state = 0; 1311 } 1312 break; 1313 case 3: /* Waiting for ' */ 1314 if ((c == '\'') && (prev != '\\')) { 1315 state = 0; 1316 } else { 1317 *(output++) = c; 1318 outputcnt--; 1319 } 1320 break; 1321 } 1322 prev = c; 1323 } 1324 1325 if (outputcnt) 1326 *output = 0; 1327 else 1328 *(output - 1) = 0; 1329 1330 #ifdef DEBUG_PARSER 1331 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", 1332 strlen (output_start), output_start); 1333 #endif 1334 } 1335 1336 /**************************************************************************** 1337 * returns: 1338 * 1 - command executed, repeatable 1339 * 0 - command executed but not repeatable, interrupted commands are 1340 * always considered not repeatable 1341 * -1 - not executed (unrecognized, bootd recursion or too many args) 1342 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is 1343 * considered unrecognized) 1344 * 1345 * WARNING: 1346 * 1347 * We must create a temporary copy of the command since the command we get 1348 * may be the result from getenv(), which returns a pointer directly to 1349 * the environment data, which may change magicly when the command we run 1350 * creates or modifies environment variables (like "bootp" does). 1351 */ 1352 static int builtin_run_command(const char *cmd, int flag) 1353 { 1354 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */ 1355 char *token; /* start of token in cmdbuf */ 1356 char *sep; /* end of token (separator) in cmdbuf */ 1357 char finaltoken[CONFIG_SYS_CBSIZE]; 1358 char *str = cmdbuf; 1359 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 1360 int argc, inquotes; 1361 int repeatable = 1; 1362 int rc = 0; 1363 1364 #ifdef DEBUG_PARSER 1365 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); 1366 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ 1367 puts ("\"\n"); 1368 #endif 1369 1370 clear_ctrlc(); /* forget any previous Control C */ 1371 1372 if (!cmd || !*cmd) { 1373 return -1; /* empty command */ 1374 } 1375 1376 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) { 1377 puts ("## Command too long!\n"); 1378 return -1; 1379 } 1380 1381 strcpy (cmdbuf, cmd); 1382 1383 /* Process separators and check for invalid 1384 * repeatable commands 1385 */ 1386 1387 #ifdef DEBUG_PARSER 1388 printf ("[PROCESS_SEPARATORS] %s\n", cmd); 1389 #endif 1390 while (*str) { 1391 1392 /* 1393 * Find separator, or string end 1394 * Allow simple escape of ';' by writing "\;" 1395 */ 1396 for (inquotes = 0, sep = str; *sep; sep++) { 1397 if ((*sep=='\'') && 1398 (*(sep-1) != '\\')) 1399 inquotes=!inquotes; 1400 1401 if (!inquotes && 1402 (*sep == ';') && /* separator */ 1403 ( sep != str) && /* past string start */ 1404 (*(sep-1) != '\\')) /* and NOT escaped */ 1405 break; 1406 } 1407 1408 /* 1409 * Limit the token to data between separators 1410 */ 1411 token = str; 1412 if (*sep) { 1413 str = sep + 1; /* start of command for next pass */ 1414 *sep = '\0'; 1415 } 1416 else 1417 str = sep; /* no more commands for next pass */ 1418 #ifdef DEBUG_PARSER 1419 printf ("token: \"%s\"\n", token); 1420 #endif 1421 1422 /* find macros in this token and replace them */ 1423 process_macros (token, finaltoken); 1424 1425 /* Extract arguments */ 1426 if ((argc = parse_line (finaltoken, argv)) == 0) { 1427 rc = -1; /* no command at all */ 1428 continue; 1429 } 1430 1431 if (cmd_process(flag, argc, argv, &repeatable)) 1432 rc = -1; 1433 1434 /* Did the user stop this? */ 1435 if (had_ctrlc ()) 1436 return -1; /* if stopped then not repeatable */ 1437 } 1438 1439 return rc ? rc : repeatable; 1440 } 1441 #endif 1442 1443 /* 1444 * Run a command using the selected parser. 1445 * 1446 * @param cmd Command to run 1447 * @param flag Execution flags (CMD_FLAG_...) 1448 * @return 0 on success, or != 0 on error. 1449 */ 1450 int run_command(const char *cmd, int flag) 1451 { 1452 #ifndef CONFIG_SYS_HUSH_PARSER 1453 /* 1454 * builtin_run_command can return 0 or 1 for success, so clean up 1455 * its result. 1456 */ 1457 if (builtin_run_command(cmd, flag) == -1) 1458 return 1; 1459 1460 return 0; 1461 #else 1462 return parse_string_outer(cmd, 1463 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP); 1464 #endif 1465 } 1466 1467 #ifndef CONFIG_SYS_HUSH_PARSER 1468 /** 1469 * Execute a list of command separated by ; or \n using the built-in parser. 1470 * 1471 * This function cannot take a const char * for the command, since if it 1472 * finds newlines in the string, it replaces them with \0. 1473 * 1474 * @param cmd String containing list of commands 1475 * @param flag Execution flags (CMD_FLAG_...) 1476 * @return 0 on success, or != 0 on error. 1477 */ 1478 static int builtin_run_command_list(char *cmd, int flag) 1479 { 1480 char *line, *next; 1481 int rcode = 0; 1482 1483 /* 1484 * Break into individual lines, and execute each line; terminate on 1485 * error. 1486 */ 1487 line = next = cmd; 1488 while (*next) { 1489 if (*next == '\n') { 1490 *next = '\0'; 1491 /* run only non-empty commands */ 1492 if (*line) { 1493 debug("** exec: \"%s\"\n", line); 1494 if (builtin_run_command(line, 0) < 0) { 1495 rcode = 1; 1496 break; 1497 } 1498 } 1499 line = next + 1; 1500 } 1501 ++next; 1502 } 1503 if (rcode == 0 && *line) 1504 rcode = (builtin_run_command(line, 0) >= 0); 1505 1506 return rcode; 1507 } 1508 #endif 1509 1510 int run_command_list(const char *cmd, int len, int flag) 1511 { 1512 int need_buff = 1; 1513 char *buff = (char *)cmd; /* cast away const */ 1514 int rcode = 0; 1515 1516 if (len == -1) { 1517 len = strlen(cmd); 1518 #ifdef CONFIG_SYS_HUSH_PARSER 1519 /* hush will never change our string */ 1520 need_buff = 0; 1521 #else 1522 /* the built-in parser will change our string if it sees \n */ 1523 need_buff = strchr(cmd, '\n') != NULL; 1524 #endif 1525 } 1526 if (need_buff) { 1527 buff = malloc(len + 1); 1528 if (!buff) 1529 return 1; 1530 memcpy(buff, cmd, len); 1531 buff[len] = '\0'; 1532 } 1533 #ifdef CONFIG_SYS_HUSH_PARSER 1534 rcode = parse_string_outer(buff, FLAG_PARSE_SEMICOLON); 1535 #else 1536 /* 1537 * This function will overwrite any \n it sees with a \0, which 1538 * is why it can't work with a const char *. Here we are making 1539 * using of internal knowledge of this function, to avoid always 1540 * doing a malloc() which is actually required only in a case that 1541 * is pretty rare. 1542 */ 1543 rcode = builtin_run_command_list(buff, flag); 1544 if (need_buff) 1545 free(buff); 1546 #endif 1547 1548 return rcode; 1549 } 1550 1551 /****************************************************************************/ 1552 1553 #if defined(CONFIG_CMD_RUN) 1554 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) 1555 { 1556 int i; 1557 1558 if (argc < 2) 1559 return CMD_RET_USAGE; 1560 1561 for (i=1; i<argc; ++i) { 1562 char *arg; 1563 1564 if ((arg = getenv (argv[i])) == NULL) { 1565 printf ("## Error: \"%s\" not defined\n", argv[i]); 1566 return 1; 1567 } 1568 1569 if (run_command(arg, flag) != 0) 1570 return 1; 1571 } 1572 return 0; 1573 } 1574 #endif 1575