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 DECLARE_GLOBAL_DATA_PTR; 57 58 /* 59 * Board-specific Platform code can reimplement show_boot_progress () if needed 60 */ 61 void inline __show_boot_progress (int val) {} 62 void show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress"))); 63 64 #if defined(CONFIG_UPDATE_TFTP) 65 int update_tftp (ulong addr); 66 #endif /* CONFIG_UPDATE_TFTP */ 67 68 #define MAX_DELAY_STOP_STR 32 69 70 #undef DEBUG_PARSER 71 72 char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */ 73 74 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen); 75 static const char erase_seq[] = "\b \b"; /* erase sequence */ 76 static const char tab_seq[] = " "; /* used to expand TABs */ 77 78 #ifdef CONFIG_BOOT_RETRY_TIME 79 static uint64_t endtime = 0; /* must be set, default is instant timeout */ 80 static int retry_time = -1; /* -1 so can call readline before main_loop */ 81 #endif 82 83 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk()) 84 85 #ifndef CONFIG_BOOT_RETRY_MIN 86 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME 87 #endif 88 89 #ifdef CONFIG_MODEM_SUPPORT 90 int do_mdm_init = 0; 91 extern void mdm_init(void); /* defined in board.c */ 92 #endif 93 94 /*************************************************************************** 95 * Watch for 'delay' seconds for autoboot stop or autoboot delay string. 96 * returns: 0 - no key string, allow autoboot 1 - got key string, abort 97 */ 98 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 99 # if defined(CONFIG_AUTOBOOT_KEYED) 100 #ifndef CONFIG_MENU 101 static inline 102 #endif 103 int abortboot(int bootdelay) 104 { 105 int abort = 0; 106 uint64_t etime = endtick(bootdelay); 107 struct { 108 char* str; 109 u_int len; 110 int retry; 111 } 112 delaykey [] = { 113 { str: getenv ("bootdelaykey"), retry: 1 }, 114 { str: getenv ("bootdelaykey2"), retry: 1 }, 115 { str: getenv ("bootstopkey"), retry: 0 }, 116 { str: getenv ("bootstopkey2"), retry: 0 }, 117 }; 118 119 char presskey [MAX_DELAY_STOP_STR]; 120 u_int presskey_len = 0; 121 u_int presskey_max = 0; 122 u_int i; 123 124 #ifndef CONFIG_ZERO_BOOTDELAY_CHECK 125 if (bootdelay == 0) 126 return 0; 127 #endif 128 129 # ifdef CONFIG_AUTOBOOT_PROMPT 130 printf(CONFIG_AUTOBOOT_PROMPT); 131 # endif 132 133 # ifdef CONFIG_AUTOBOOT_DELAY_STR 134 if (delaykey[0].str == NULL) 135 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; 136 # endif 137 # ifdef CONFIG_AUTOBOOT_DELAY_STR2 138 if (delaykey[1].str == NULL) 139 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; 140 # endif 141 # ifdef CONFIG_AUTOBOOT_STOP_STR 142 if (delaykey[2].str == NULL) 143 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; 144 # endif 145 # ifdef CONFIG_AUTOBOOT_STOP_STR2 146 if (delaykey[3].str == NULL) 147 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; 148 # endif 149 150 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 151 delaykey[i].len = delaykey[i].str == NULL ? 152 0 : strlen (delaykey[i].str); 153 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? 154 MAX_DELAY_STOP_STR : delaykey[i].len; 155 156 presskey_max = presskey_max > delaykey[i].len ? 157 presskey_max : delaykey[i].len; 158 159 # if DEBUG_BOOTKEYS 160 printf("%s key:<%s>\n", 161 delaykey[i].retry ? "delay" : "stop", 162 delaykey[i].str ? delaykey[i].str : "NULL"); 163 # endif 164 } 165 166 /* In order to keep up with incoming data, check timeout only 167 * when catch up. 168 */ 169 do { 170 if (tstc()) { 171 if (presskey_len < presskey_max) { 172 presskey [presskey_len ++] = getc(); 173 } 174 else { 175 for (i = 0; i < presskey_max - 1; i ++) 176 presskey [i] = presskey [i + 1]; 177 178 presskey [i] = getc(); 179 } 180 } 181 182 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { 183 if (delaykey[i].len > 0 && 184 presskey_len >= delaykey[i].len && 185 memcmp (presskey + presskey_len - delaykey[i].len, 186 delaykey[i].str, 187 delaykey[i].len) == 0) { 188 # if DEBUG_BOOTKEYS 189 printf("got %skey\n", 190 delaykey[i].retry ? "delay" : "stop"); 191 # endif 192 193 # ifdef CONFIG_BOOT_RETRY_TIME 194 /* don't retry auto boot */ 195 if (! delaykey[i].retry) 196 retry_time = -1; 197 # endif 198 abort = 1; 199 } 200 } 201 } while (!abort && get_ticks() <= etime); 202 203 # if DEBUG_BOOTKEYS 204 if (!abort) 205 puts("key timeout\n"); 206 # endif 207 208 #ifdef CONFIG_SILENT_CONSOLE 209 if (abort) 210 gd->flags &= ~GD_FLG_SILENT; 211 #endif 212 213 return abort; 214 } 215 216 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ 217 218 #ifdef CONFIG_MENUKEY 219 static int menukey = 0; 220 #endif 221 222 #ifndef CONFIG_MENU 223 static inline 224 #endif 225 int abortboot(int bootdelay) 226 { 227 int abort = 0; 228 229 #ifdef CONFIG_MENUPROMPT 230 printf(CONFIG_MENUPROMPT); 231 #else 232 if (bootdelay >= 0) 233 printf("Hit any key to stop autoboot: %2d ", bootdelay); 234 #endif 235 236 #if defined CONFIG_ZERO_BOOTDELAY_CHECK 237 /* 238 * Check if key already pressed 239 * Don't check if bootdelay < 0 240 */ 241 if (bootdelay >= 0) { 242 if (tstc()) { /* we got a key press */ 243 (void) getc(); /* consume input */ 244 puts ("\b\b\b 0"); 245 abort = 1; /* don't auto boot */ 246 } 247 } 248 #endif 249 250 while ((bootdelay > 0) && (!abort)) { 251 int i; 252 253 --bootdelay; 254 /* delay 100 * 10ms */ 255 for (i=0; !abort && i<100; ++i) { 256 if (tstc()) { /* we got a key press */ 257 abort = 1; /* don't auto boot */ 258 bootdelay = 0; /* no more delay */ 259 # ifdef CONFIG_MENUKEY 260 menukey = getc(); 261 # else 262 (void) getc(); /* consume input */ 263 # endif 264 break; 265 } 266 udelay(10000); 267 } 268 269 printf("\b\b\b%2d ", bootdelay); 270 } 271 272 putc('\n'); 273 274 #ifdef CONFIG_SILENT_CONSOLE 275 if (abort) 276 gd->flags &= ~GD_FLG_SILENT; 277 #endif 278 279 return abort; 280 } 281 # endif /* CONFIG_AUTOBOOT_KEYED */ 282 #endif /* CONFIG_BOOTDELAY >= 0 */ 283 284 /* 285 * Runs the given boot command securely. Specifically: 286 * - Doesn't run the command with the shell (run_command or parse_string_outer), 287 * since that's a lot of code surface that an attacker might exploit. 288 * Because of this, we don't do any argument parsing--the secure boot command 289 * has to be a full-fledged u-boot command. 290 * - Doesn't check for keypresses before booting, since that could be a 291 * security hole; also disables Ctrl-C. 292 * - Doesn't allow the command to return. 293 * 294 * Upon any failures, this function will drop into an infinite loop after 295 * printing the error message to console. 296 */ 297 298 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) && \ 299 defined(CONFIG_OF_CONTROL) 300 static void secure_boot_cmd(char *cmd) 301 { 302 cmd_tbl_t *cmdtp; 303 int rc; 304 305 if (!cmd) { 306 printf("## Error: Secure boot command not specified\n"); 307 goto err; 308 } 309 310 /* Disable Ctrl-C just in case some command is used that checks it. */ 311 disable_ctrlc(1); 312 313 /* Find the command directly. */ 314 cmdtp = find_cmd(cmd); 315 if (!cmdtp) { 316 printf("## Error: \"%s\" not defined\n", cmd); 317 goto err; 318 } 319 320 /* Run the command, forcing no flags and faking argc and argv. */ 321 rc = (cmdtp->cmd)(cmdtp, 0, 1, &cmd); 322 323 /* Shouldn't ever return from boot command. */ 324 printf("## Error: \"%s\" returned (code %d)\n", cmd, rc); 325 326 err: 327 /* 328 * Not a whole lot to do here. Rebooting won't help much, since we'll 329 * just end up right back here. Just loop. 330 */ 331 hang(); 332 } 333 334 static void process_fdt_options(const void *blob) 335 { 336 ulong addr; 337 338 /* Add an env variable to point to a kernel payload, if available */ 339 addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0); 340 if (addr) 341 setenv_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); 342 343 /* Add an env variable to point to a root disk, if available */ 344 addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0); 345 if (addr) 346 setenv_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); 347 } 348 #endif /* CONFIG_OF_CONTROL */ 349 350 351 /****************************************************************************/ 352 353 void main_loop (void) 354 { 355 #ifndef CONFIG_SYS_HUSH_PARSER 356 static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, }; 357 int len; 358 int rc = 1; 359 int flag; 360 #endif 361 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) && \ 362 defined(CONFIG_OF_CONTROL) 363 char *env; 364 #endif 365 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 366 char *s; 367 int bootdelay; 368 #endif 369 #ifdef CONFIG_PREBOOT 370 char *p; 371 #endif 372 #ifdef CONFIG_BOOTCOUNT_LIMIT 373 unsigned long bootcount = 0; 374 unsigned long bootlimit = 0; 375 char *bcs; 376 char bcs_set[16]; 377 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 378 379 bootstage_mark_name(BOOTSTAGE_ID_MAIN_LOOP, "main_loop"); 380 381 #ifdef CONFIG_BOOTCOUNT_LIMIT 382 bootcount = bootcount_load(); 383 bootcount++; 384 bootcount_store (bootcount); 385 sprintf (bcs_set, "%lu", bootcount); 386 setenv ("bootcount", bcs_set); 387 bcs = getenv ("bootlimit"); 388 bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0; 389 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 390 391 #ifdef CONFIG_MODEM_SUPPORT 392 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); 393 if (do_mdm_init) { 394 char *str = strdup(getenv("mdm_cmd")); 395 setenv ("preboot", str); /* set or delete definition */ 396 if (str != NULL) 397 free (str); 398 mdm_init(); /* wait for modem connection */ 399 } 400 #endif /* CONFIG_MODEM_SUPPORT */ 401 402 #ifdef CONFIG_VERSION_VARIABLE 403 { 404 setenv ("ver", version_string); /* set version variable */ 405 } 406 #endif /* CONFIG_VERSION_VARIABLE */ 407 408 #ifdef CONFIG_SYS_HUSH_PARSER 409 u_boot_hush_start (); 410 #endif 411 412 #if defined(CONFIG_HUSH_INIT_VAR) 413 hush_init_var (); 414 #endif 415 416 #ifdef CONFIG_PREBOOT 417 if ((p = getenv ("preboot")) != NULL) { 418 # ifdef CONFIG_AUTOBOOT_KEYED 419 int prev = disable_ctrlc(1); /* disable Control C checking */ 420 # endif 421 422 run_command_list(p, -1, 0); 423 424 # ifdef CONFIG_AUTOBOOT_KEYED 425 disable_ctrlc(prev); /* restore Control C checking */ 426 # endif 427 } 428 #endif /* CONFIG_PREBOOT */ 429 430 #if defined(CONFIG_UPDATE_TFTP) 431 update_tftp (0UL); 432 #endif /* CONFIG_UPDATE_TFTP */ 433 434 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) 435 s = getenv ("bootdelay"); 436 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; 437 438 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); 439 440 #if defined(CONFIG_MENU_SHOW) 441 bootdelay = menu_show(bootdelay); 442 #endif 443 # ifdef CONFIG_BOOT_RETRY_TIME 444 init_cmd_timeout (); 445 # endif /* CONFIG_BOOT_RETRY_TIME */ 446 447 #ifdef CONFIG_POST 448 if (gd->flags & GD_FLG_POSTFAIL) { 449 s = getenv("failbootcmd"); 450 } 451 else 452 #endif /* CONFIG_POST */ 453 #ifdef CONFIG_BOOTCOUNT_LIMIT 454 if (bootlimit && (bootcount > bootlimit)) { 455 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", 456 (unsigned)bootlimit); 457 s = getenv ("altbootcmd"); 458 } 459 else 460 #endif /* CONFIG_BOOTCOUNT_LIMIT */ 461 s = getenv ("bootcmd"); 462 #ifdef CONFIG_OF_CONTROL 463 /* Allow the fdt to override the boot command */ 464 env = fdtdec_get_config_string(gd->fdt_blob, "bootcmd"); 465 if (env) 466 s = env; 467 468 process_fdt_options(gd->fdt_blob); 469 470 /* 471 * If the bootsecure option was chosen, use secure_boot_cmd(). 472 * Always use 'env' in this case, since bootsecure requres that the 473 * bootcmd was specified in the FDT too. 474 */ 475 if (fdtdec_get_config_int(gd->fdt_blob, "bootsecure", 0)) 476 secure_boot_cmd(env); 477 478 #endif /* CONFIG_OF_CONTROL */ 479 480 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); 481 482 if (bootdelay != -1 && s && !abortboot(bootdelay)) { 483 # ifdef CONFIG_AUTOBOOT_KEYED 484 int prev = disable_ctrlc(1); /* disable Control C checking */ 485 # endif 486 487 run_command_list(s, -1, 0); 488 489 # ifdef CONFIG_AUTOBOOT_KEYED 490 disable_ctrlc(prev); /* restore Control C checking */ 491 # endif 492 } 493 494 # ifdef CONFIG_MENUKEY 495 if (menukey == CONFIG_MENUKEY) { 496 s = getenv("menucmd"); 497 if (s) 498 run_command_list(s, -1, 0); 499 } 500 #endif /* CONFIG_MENUKEY */ 501 #endif /* CONFIG_BOOTDELAY */ 502 503 #if defined CONFIG_OF_CONTROL 504 set_working_fdt_addr((void *)gd->fdt_blob); 505 #endif /* CONFIG_OF_CONTROL */ 506 507 /* 508 * Main Loop for Monitor Command Processing 509 */ 510 #ifdef CONFIG_SYS_HUSH_PARSER 511 parse_file_outer(); 512 /* This point is never reached */ 513 for (;;); 514 #else 515 for (;;) { 516 #ifdef CONFIG_BOOT_RETRY_TIME 517 if (rc >= 0) { 518 /* Saw enough of a valid command to 519 * restart the timeout. 520 */ 521 reset_cmd_timeout(); 522 } 523 #endif 524 len = readline (CONFIG_SYS_PROMPT); 525 526 flag = 0; /* assume no special flags for now */ 527 if (len > 0) 528 strcpy (lastcommand, console_buffer); 529 else if (len == 0) 530 flag |= CMD_FLAG_REPEAT; 531 #ifdef CONFIG_BOOT_RETRY_TIME 532 else if (len == -2) { 533 /* -2 means timed out, retry autoboot 534 */ 535 puts ("\nTimed out waiting for command\n"); 536 # ifdef CONFIG_RESET_TO_RETRY 537 /* Reinit board to run initialization code again */ 538 do_reset (NULL, 0, 0, NULL); 539 # else 540 return; /* retry autoboot */ 541 # endif 542 } 543 #endif 544 545 if (len == -1) 546 puts ("<INTERRUPT>\n"); 547 else 548 rc = run_command(lastcommand, flag); 549 550 if (rc <= 0) { 551 /* invalid command or not repeatable, forget it */ 552 lastcommand[0] = 0; 553 } 554 } 555 #endif /*CONFIG_SYS_HUSH_PARSER*/ 556 } 557 558 #ifdef CONFIG_BOOT_RETRY_TIME 559 /*************************************************************************** 560 * initialize command line timeout 561 */ 562 void init_cmd_timeout(void) 563 { 564 char *s = getenv ("bootretry"); 565 566 if (s != NULL) 567 retry_time = (int)simple_strtol(s, NULL, 10); 568 else 569 retry_time = CONFIG_BOOT_RETRY_TIME; 570 571 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) 572 retry_time = CONFIG_BOOT_RETRY_MIN; 573 } 574 575 /*************************************************************************** 576 * reset command line timeout to retry_time seconds 577 */ 578 void reset_cmd_timeout(void) 579 { 580 endtime = endtick(retry_time); 581 } 582 #endif 583 584 #ifdef CONFIG_CMDLINE_EDITING 585 586 /* 587 * cmdline-editing related codes from vivi. 588 * Author: Janghoon Lyu <nandy@mizi.com> 589 */ 590 591 #define putnstr(str,n) do { \ 592 printf ("%.*s", (int)n, str); \ 593 } while (0) 594 595 #define CTL_CH(c) ((c) - 'a' + 1) 596 #define CTL_BACKSPACE ('\b') 597 #define DEL ((char)255) 598 #define DEL7 ((char)127) 599 #define CREAD_HIST_CHAR ('!') 600 601 #define getcmd_putch(ch) putc(ch) 602 #define getcmd_getch() getc() 603 #define getcmd_cbeep() getcmd_putch('\a') 604 605 #define HIST_MAX 20 606 #define HIST_SIZE CONFIG_SYS_CBSIZE 607 608 static int hist_max; 609 static int hist_add_idx; 610 static int hist_cur = -1; 611 static unsigned hist_num; 612 613 static char *hist_list[HIST_MAX]; 614 static char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */ 615 616 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1) 617 618 static void hist_init(void) 619 { 620 int i; 621 622 hist_max = 0; 623 hist_add_idx = 0; 624 hist_cur = -1; 625 hist_num = 0; 626 627 for (i = 0; i < HIST_MAX; i++) { 628 hist_list[i] = hist_lines[i]; 629 hist_list[i][0] = '\0'; 630 } 631 } 632 633 static void cread_add_to_hist(char *line) 634 { 635 strcpy(hist_list[hist_add_idx], line); 636 637 if (++hist_add_idx >= HIST_MAX) 638 hist_add_idx = 0; 639 640 if (hist_add_idx > hist_max) 641 hist_max = hist_add_idx; 642 643 hist_num++; 644 } 645 646 static char* hist_prev(void) 647 { 648 char *ret; 649 int old_cur; 650 651 if (hist_cur < 0) 652 return NULL; 653 654 old_cur = hist_cur; 655 if (--hist_cur < 0) 656 hist_cur = hist_max; 657 658 if (hist_cur == hist_add_idx) { 659 hist_cur = old_cur; 660 ret = NULL; 661 } else 662 ret = hist_list[hist_cur]; 663 664 return (ret); 665 } 666 667 static char* hist_next(void) 668 { 669 char *ret; 670 671 if (hist_cur < 0) 672 return NULL; 673 674 if (hist_cur == hist_add_idx) 675 return NULL; 676 677 if (++hist_cur > hist_max) 678 hist_cur = 0; 679 680 if (hist_cur == hist_add_idx) { 681 ret = ""; 682 } else 683 ret = hist_list[hist_cur]; 684 685 return (ret); 686 } 687 688 #ifndef CONFIG_CMDLINE_EDITING 689 static void cread_print_hist_list(void) 690 { 691 int i; 692 unsigned long n; 693 694 n = hist_num - hist_max; 695 696 i = hist_add_idx + 1; 697 while (1) { 698 if (i > hist_max) 699 i = 0; 700 if (i == hist_add_idx) 701 break; 702 printf("%s\n", hist_list[i]); 703 n++; 704 i++; 705 } 706 } 707 #endif /* CONFIG_CMDLINE_EDITING */ 708 709 #define BEGINNING_OF_LINE() { \ 710 while (num) { \ 711 getcmd_putch(CTL_BACKSPACE); \ 712 num--; \ 713 } \ 714 } 715 716 #define ERASE_TO_EOL() { \ 717 if (num < eol_num) { \ 718 printf("%*s", (int)(eol_num - num), ""); \ 719 do { \ 720 getcmd_putch(CTL_BACKSPACE); \ 721 } while (--eol_num > num); \ 722 } \ 723 } 724 725 #define REFRESH_TO_EOL() { \ 726 if (num < eol_num) { \ 727 wlen = eol_num - num; \ 728 putnstr(buf + num, wlen); \ 729 num = eol_num; \ 730 } \ 731 } 732 733 static void cread_add_char(char ichar, int insert, unsigned long *num, 734 unsigned long *eol_num, char *buf, unsigned long len) 735 { 736 unsigned long wlen; 737 738 /* room ??? */ 739 if (insert || *num == *eol_num) { 740 if (*eol_num > len - 1) { 741 getcmd_cbeep(); 742 return; 743 } 744 (*eol_num)++; 745 } 746 747 if (insert) { 748 wlen = *eol_num - *num; 749 if (wlen > 1) { 750 memmove(&buf[*num+1], &buf[*num], wlen-1); 751 } 752 753 buf[*num] = ichar; 754 putnstr(buf + *num, wlen); 755 (*num)++; 756 while (--wlen) { 757 getcmd_putch(CTL_BACKSPACE); 758 } 759 } else { 760 /* echo the character */ 761 wlen = 1; 762 buf[*num] = ichar; 763 putnstr(buf + *num, wlen); 764 (*num)++; 765 } 766 } 767 768 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num, 769 unsigned long *eol_num, char *buf, unsigned long len) 770 { 771 while (strsize--) { 772 cread_add_char(*str, insert, num, eol_num, buf, len); 773 str++; 774 } 775 } 776 777 static int cread_line(const char *const prompt, char *buf, unsigned int *len, 778 int timeout) 779 { 780 unsigned long num = 0; 781 unsigned long eol_num = 0; 782 unsigned long wlen; 783 char ichar; 784 int insert = 1; 785 int esc_len = 0; 786 char esc_save[8]; 787 int init_len = strlen(buf); 788 int first = 1; 789 790 if (init_len) 791 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len); 792 793 while (1) { 794 #ifdef CONFIG_BOOT_RETRY_TIME 795 while (!tstc()) { /* while no incoming data */ 796 if (retry_time >= 0 && get_ticks() > endtime) 797 return (-2); /* timed out */ 798 WATCHDOG_RESET(); 799 } 800 #endif 801 if (first && timeout) { 802 uint64_t etime = endtick(timeout); 803 804 while (!tstc()) { /* while no incoming data */ 805 if (get_ticks() >= etime) 806 return -2; /* timed out */ 807 WATCHDOG_RESET(); 808 } 809 first = 0; 810 } 811 812 ichar = getcmd_getch(); 813 814 if ((ichar == '\n') || (ichar == '\r')) { 815 putc('\n'); 816 break; 817 } 818 819 /* 820 * handle standard linux xterm esc sequences for arrow key, etc. 821 */ 822 if (esc_len != 0) { 823 if (esc_len == 1) { 824 if (ichar == '[') { 825 esc_save[esc_len] = ichar; 826 esc_len = 2; 827 } else { 828 cread_add_str(esc_save, esc_len, insert, 829 &num, &eol_num, buf, *len); 830 esc_len = 0; 831 } 832 continue; 833 } 834 835 switch (ichar) { 836 837 case 'D': /* <- key */ 838 ichar = CTL_CH('b'); 839 esc_len = 0; 840 break; 841 case 'C': /* -> key */ 842 ichar = CTL_CH('f'); 843 esc_len = 0; 844 break; /* pass off to ^F handler */ 845 case 'H': /* Home key */ 846 ichar = CTL_CH('a'); 847 esc_len = 0; 848 break; /* pass off to ^A handler */ 849 case 'A': /* up arrow */ 850 ichar = CTL_CH('p'); 851 esc_len = 0; 852 break; /* pass off to ^P handler */ 853 case 'B': /* down arrow */ 854 ichar = CTL_CH('n'); 855 esc_len = 0; 856 break; /* pass off to ^N handler */ 857 default: 858 esc_save[esc_len++] = ichar; 859 cread_add_str(esc_save, esc_len, insert, 860 &num, &eol_num, buf, *len); 861 esc_len = 0; 862 continue; 863 } 864 } 865 866 switch (ichar) { 867 case 0x1b: 868 if (esc_len == 0) { 869 esc_save[esc_len] = ichar; 870 esc_len = 1; 871 } else { 872 puts("impossible condition #876\n"); 873 esc_len = 0; 874 } 875 break; 876 877 case CTL_CH('a'): 878 BEGINNING_OF_LINE(); 879 break; 880 case CTL_CH('c'): /* ^C - break */ 881 *buf = '\0'; /* discard input */ 882 return (-1); 883 case CTL_CH('f'): 884 if (num < eol_num) { 885 getcmd_putch(buf[num]); 886 num++; 887 } 888 break; 889 case CTL_CH('b'): 890 if (num) { 891 getcmd_putch(CTL_BACKSPACE); 892 num--; 893 } 894 break; 895 case CTL_CH('d'): 896 if (num < eol_num) { 897 wlen = eol_num - num - 1; 898 if (wlen) { 899 memmove(&buf[num], &buf[num+1], wlen); 900 putnstr(buf + num, wlen); 901 } 902 903 getcmd_putch(' '); 904 do { 905 getcmd_putch(CTL_BACKSPACE); 906 } while (wlen--); 907 eol_num--; 908 } 909 break; 910 case CTL_CH('k'): 911 ERASE_TO_EOL(); 912 break; 913 case CTL_CH('e'): 914 REFRESH_TO_EOL(); 915 break; 916 case CTL_CH('o'): 917 insert = !insert; 918 break; 919 case CTL_CH('x'): 920 case CTL_CH('u'): 921 BEGINNING_OF_LINE(); 922 ERASE_TO_EOL(); 923 break; 924 case DEL: 925 case DEL7: 926 case 8: 927 if (num) { 928 wlen = eol_num - num; 929 num--; 930 memmove(&buf[num], &buf[num+1], wlen); 931 getcmd_putch(CTL_BACKSPACE); 932 putnstr(buf + num, wlen); 933 getcmd_putch(' '); 934 do { 935 getcmd_putch(CTL_BACKSPACE); 936 } while (wlen--); 937 eol_num--; 938 } 939 break; 940 case CTL_CH('p'): 941 case CTL_CH('n'): 942 { 943 char * hline; 944 945 esc_len = 0; 946 947 if (ichar == CTL_CH('p')) 948 hline = hist_prev(); 949 else 950 hline = hist_next(); 951 952 if (!hline) { 953 getcmd_cbeep(); 954 continue; 955 } 956 957 /* nuke the current line */ 958 /* first, go home */ 959 BEGINNING_OF_LINE(); 960 961 /* erase to end of line */ 962 ERASE_TO_EOL(); 963 964 /* copy new line into place and display */ 965 strcpy(buf, hline); 966 eol_num = strlen(buf); 967 REFRESH_TO_EOL(); 968 continue; 969 } 970 #ifdef CONFIG_AUTO_COMPLETE 971 case '\t': { 972 int num2, col; 973 974 /* do not autocomplete when in the middle */ 975 if (num < eol_num) { 976 getcmd_cbeep(); 977 break; 978 } 979 980 buf[num] = '\0'; 981 col = strlen(prompt) + eol_num; 982 num2 = num; 983 if (cmd_auto_complete(prompt, buf, &num2, &col)) { 984 col = num2 - num; 985 num += col; 986 eol_num += col; 987 } 988 break; 989 } 990 #endif 991 default: 992 cread_add_char(ichar, insert, &num, &eol_num, buf, *len); 993 break; 994 } 995 } 996 *len = eol_num; 997 buf[eol_num] = '\0'; /* lose the newline */ 998 999 if (buf[0] && buf[0] != CREAD_HIST_CHAR) 1000 cread_add_to_hist(buf); 1001 hist_cur = hist_add_idx; 1002 1003 return 0; 1004 } 1005 1006 #endif /* CONFIG_CMDLINE_EDITING */ 1007 1008 /****************************************************************************/ 1009 1010 /* 1011 * Prompt for input and read a line. 1012 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, 1013 * time out when time goes past endtime (timebase time in ticks). 1014 * Return: number of read characters 1015 * -1 if break 1016 * -2 if timed out 1017 */ 1018 int readline (const char *const prompt) 1019 { 1020 /* 1021 * If console_buffer isn't 0-length the user will be prompted to modify 1022 * it instead of entering it from scratch as desired. 1023 */ 1024 console_buffer[0] = '\0'; 1025 1026 return readline_into_buffer(prompt, console_buffer, 0); 1027 } 1028 1029 1030 int readline_into_buffer(const char *const prompt, char *buffer, int timeout) 1031 { 1032 char *p = buffer; 1033 #ifdef CONFIG_CMDLINE_EDITING 1034 unsigned int len = CONFIG_SYS_CBSIZE; 1035 int rc; 1036 static int initted = 0; 1037 1038 /* 1039 * History uses a global array which is not 1040 * writable until after relocation to RAM. 1041 * Revert to non-history version if still 1042 * running from flash. 1043 */ 1044 if (gd->flags & GD_FLG_RELOC) { 1045 if (!initted) { 1046 hist_init(); 1047 initted = 1; 1048 } 1049 1050 if (prompt) 1051 puts (prompt); 1052 1053 rc = cread_line(prompt, p, &len, timeout); 1054 return rc < 0 ? rc : len; 1055 1056 } else { 1057 #endif /* CONFIG_CMDLINE_EDITING */ 1058 char * p_buf = p; 1059 int n = 0; /* buffer index */ 1060 int plen = 0; /* prompt length */ 1061 int col; /* output column cnt */ 1062 char c; 1063 1064 /* print prompt */ 1065 if (prompt) { 1066 plen = strlen (prompt); 1067 puts (prompt); 1068 } 1069 col = plen; 1070 1071 for (;;) { 1072 #ifdef CONFIG_BOOT_RETRY_TIME 1073 while (!tstc()) { /* while no incoming data */ 1074 if (retry_time >= 0 && get_ticks() > endtime) 1075 return (-2); /* timed out */ 1076 WATCHDOG_RESET(); 1077 } 1078 #endif 1079 WATCHDOG_RESET(); /* Trigger watchdog, if needed */ 1080 1081 #ifdef CONFIG_SHOW_ACTIVITY 1082 while (!tstc()) { 1083 show_activity(0); 1084 WATCHDOG_RESET(); 1085 } 1086 #endif 1087 c = getc(); 1088 1089 /* 1090 * Special character handling 1091 */ 1092 switch (c) { 1093 case '\r': /* Enter */ 1094 case '\n': 1095 *p = '\0'; 1096 puts ("\r\n"); 1097 return (p - p_buf); 1098 1099 case '\0': /* nul */ 1100 continue; 1101 1102 case 0x03: /* ^C - break */ 1103 p_buf[0] = '\0'; /* discard input */ 1104 return (-1); 1105 1106 case 0x15: /* ^U - erase line */ 1107 while (col > plen) { 1108 puts (erase_seq); 1109 --col; 1110 } 1111 p = p_buf; 1112 n = 0; 1113 continue; 1114 1115 case 0x17: /* ^W - erase word */ 1116 p=delete_char(p_buf, p, &col, &n, plen); 1117 while ((n > 0) && (*p != ' ')) { 1118 p=delete_char(p_buf, p, &col, &n, plen); 1119 } 1120 continue; 1121 1122 case 0x08: /* ^H - backspace */ 1123 case 0x7F: /* DEL - backspace */ 1124 p=delete_char(p_buf, p, &col, &n, plen); 1125 continue; 1126 1127 default: 1128 /* 1129 * Must be a normal character then 1130 */ 1131 if (n < CONFIG_SYS_CBSIZE-2) { 1132 if (c == '\t') { /* expand TABs */ 1133 #ifdef CONFIG_AUTO_COMPLETE 1134 /* if auto completion triggered just continue */ 1135 *p = '\0'; 1136 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) { 1137 p = p_buf + n; /* reset */ 1138 continue; 1139 } 1140 #endif 1141 puts (tab_seq+(col&07)); 1142 col += 8 - (col&07); 1143 } else { 1144 char buf[2]; 1145 1146 /* 1147 * Echo input using puts() to force am 1148 * LCD flush if we are using an LCD 1149 */ 1150 ++col; 1151 buf[0] = c; 1152 buf[1] = '\0'; 1153 puts(buf); 1154 } 1155 *p++ = c; 1156 ++n; 1157 } else { /* Buffer full */ 1158 putc ('\a'); 1159 } 1160 } 1161 } 1162 #ifdef CONFIG_CMDLINE_EDITING 1163 } 1164 #endif 1165 } 1166 1167 /****************************************************************************/ 1168 1169 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) 1170 { 1171 char *s; 1172 1173 if (*np == 0) { 1174 return (p); 1175 } 1176 1177 if (*(--p) == '\t') { /* will retype the whole line */ 1178 while (*colp > plen) { 1179 puts (erase_seq); 1180 (*colp)--; 1181 } 1182 for (s=buffer; s<p; ++s) { 1183 if (*s == '\t') { 1184 puts (tab_seq+((*colp) & 07)); 1185 *colp += 8 - ((*colp) & 07); 1186 } else { 1187 ++(*colp); 1188 putc (*s); 1189 } 1190 } 1191 } else { 1192 puts (erase_seq); 1193 (*colp)--; 1194 } 1195 (*np)--; 1196 return (p); 1197 } 1198 1199 /****************************************************************************/ 1200 1201 int parse_line (char *line, char *argv[]) 1202 { 1203 int nargs = 0; 1204 1205 #ifdef DEBUG_PARSER 1206 printf ("parse_line: \"%s\"\n", line); 1207 #endif 1208 while (nargs < CONFIG_SYS_MAXARGS) { 1209 1210 /* skip any white space */ 1211 while (isblank(*line)) 1212 ++line; 1213 1214 if (*line == '\0') { /* end of line, no more args */ 1215 argv[nargs] = NULL; 1216 #ifdef DEBUG_PARSER 1217 printf ("parse_line: nargs=%d\n", nargs); 1218 #endif 1219 return (nargs); 1220 } 1221 1222 argv[nargs++] = line; /* begin of argument string */ 1223 1224 /* find end of string */ 1225 while (*line && !isblank(*line)) 1226 ++line; 1227 1228 if (*line == '\0') { /* end of line, no more args */ 1229 argv[nargs] = NULL; 1230 #ifdef DEBUG_PARSER 1231 printf ("parse_line: nargs=%d\n", nargs); 1232 #endif 1233 return (nargs); 1234 } 1235 1236 *line++ = '\0'; /* terminate current arg */ 1237 } 1238 1239 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS); 1240 1241 #ifdef DEBUG_PARSER 1242 printf ("parse_line: nargs=%d\n", nargs); 1243 #endif 1244 return (nargs); 1245 } 1246 1247 /****************************************************************************/ 1248 1249 #ifndef CONFIG_SYS_HUSH_PARSER 1250 static void process_macros (const char *input, char *output) 1251 { 1252 char c, prev; 1253 const char *varname_start = NULL; 1254 int inputcnt = strlen (input); 1255 int outputcnt = CONFIG_SYS_CBSIZE; 1256 int state = 0; /* 0 = waiting for '$' */ 1257 1258 /* 1 = waiting for '(' or '{' */ 1259 /* 2 = waiting for ')' or '}' */ 1260 /* 3 = waiting for ''' */ 1261 #ifdef DEBUG_PARSER 1262 char *output_start = output; 1263 1264 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input), 1265 input); 1266 #endif 1267 1268 prev = '\0'; /* previous character */ 1269 1270 while (inputcnt && outputcnt) { 1271 c = *input++; 1272 inputcnt--; 1273 1274 if (state != 3) { 1275 /* remove one level of escape characters */ 1276 if ((c == '\\') && (prev != '\\')) { 1277 if (inputcnt-- == 0) 1278 break; 1279 prev = c; 1280 c = *input++; 1281 } 1282 } 1283 1284 switch (state) { 1285 case 0: /* Waiting for (unescaped) $ */ 1286 if ((c == '\'') && (prev != '\\')) { 1287 state = 3; 1288 break; 1289 } 1290 if ((c == '$') && (prev != '\\')) { 1291 state++; 1292 } else { 1293 *(output++) = c; 1294 outputcnt--; 1295 } 1296 break; 1297 case 1: /* Waiting for ( */ 1298 if (c == '(' || c == '{') { 1299 state++; 1300 varname_start = input; 1301 } else { 1302 state = 0; 1303 *(output++) = '$'; 1304 outputcnt--; 1305 1306 if (outputcnt) { 1307 *(output++) = c; 1308 outputcnt--; 1309 } 1310 } 1311 break; 1312 case 2: /* Waiting for ) */ 1313 if (c == ')' || c == '}') { 1314 int i; 1315 char envname[CONFIG_SYS_CBSIZE], *envval; 1316 int envcnt = input - varname_start - 1; /* Varname # of chars */ 1317 1318 /* Get the varname */ 1319 for (i = 0; i < envcnt; i++) { 1320 envname[i] = varname_start[i]; 1321 } 1322 envname[i] = 0; 1323 1324 /* Get its value */ 1325 envval = getenv (envname); 1326 1327 /* Copy into the line if it exists */ 1328 if (envval != NULL) 1329 while ((*envval) && outputcnt) { 1330 *(output++) = *(envval++); 1331 outputcnt--; 1332 } 1333 /* Look for another '$' */ 1334 state = 0; 1335 } 1336 break; 1337 case 3: /* Waiting for ' */ 1338 if ((c == '\'') && (prev != '\\')) { 1339 state = 0; 1340 } else { 1341 *(output++) = c; 1342 outputcnt--; 1343 } 1344 break; 1345 } 1346 prev = c; 1347 } 1348 1349 if (outputcnt) 1350 *output = 0; 1351 else 1352 *(output - 1) = 0; 1353 1354 #ifdef DEBUG_PARSER 1355 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", 1356 strlen (output_start), output_start); 1357 #endif 1358 } 1359 1360 /**************************************************************************** 1361 * returns: 1362 * 1 - command executed, repeatable 1363 * 0 - command executed but not repeatable, interrupted commands are 1364 * always considered not repeatable 1365 * -1 - not executed (unrecognized, bootd recursion or too many args) 1366 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is 1367 * considered unrecognized) 1368 * 1369 * WARNING: 1370 * 1371 * We must create a temporary copy of the command since the command we get 1372 * may be the result from getenv(), which returns a pointer directly to 1373 * the environment data, which may change magicly when the command we run 1374 * creates or modifies environment variables (like "bootp" does). 1375 */ 1376 static int builtin_run_command(const char *cmd, int flag) 1377 { 1378 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */ 1379 char *token; /* start of token in cmdbuf */ 1380 char *sep; /* end of token (separator) in cmdbuf */ 1381 char finaltoken[CONFIG_SYS_CBSIZE]; 1382 char *str = cmdbuf; 1383 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */ 1384 int argc, inquotes; 1385 int repeatable = 1; 1386 int rc = 0; 1387 1388 #ifdef DEBUG_PARSER 1389 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); 1390 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ 1391 puts ("\"\n"); 1392 #endif 1393 1394 clear_ctrlc(); /* forget any previous Control C */ 1395 1396 if (!cmd || !*cmd) { 1397 return -1; /* empty command */ 1398 } 1399 1400 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) { 1401 puts ("## Command too long!\n"); 1402 return -1; 1403 } 1404 1405 strcpy (cmdbuf, cmd); 1406 1407 /* Process separators and check for invalid 1408 * repeatable commands 1409 */ 1410 1411 #ifdef DEBUG_PARSER 1412 printf ("[PROCESS_SEPARATORS] %s\n", cmd); 1413 #endif 1414 while (*str) { 1415 1416 /* 1417 * Find separator, or string end 1418 * Allow simple escape of ';' by writing "\;" 1419 */ 1420 for (inquotes = 0, sep = str; *sep; sep++) { 1421 if ((*sep=='\'') && 1422 (*(sep-1) != '\\')) 1423 inquotes=!inquotes; 1424 1425 if (!inquotes && 1426 (*sep == ';') && /* separator */ 1427 ( sep != str) && /* past string start */ 1428 (*(sep-1) != '\\')) /* and NOT escaped */ 1429 break; 1430 } 1431 1432 /* 1433 * Limit the token to data between separators 1434 */ 1435 token = str; 1436 if (*sep) { 1437 str = sep + 1; /* start of command for next pass */ 1438 *sep = '\0'; 1439 } 1440 else 1441 str = sep; /* no more commands for next pass */ 1442 #ifdef DEBUG_PARSER 1443 printf ("token: \"%s\"\n", token); 1444 #endif 1445 1446 /* find macros in this token and replace them */ 1447 process_macros (token, finaltoken); 1448 1449 /* Extract arguments */ 1450 if ((argc = parse_line (finaltoken, argv)) == 0) { 1451 rc = -1; /* no command at all */ 1452 continue; 1453 } 1454 1455 if (cmd_process(flag, argc, argv, &repeatable)) 1456 rc = -1; 1457 1458 /* Did the user stop this? */ 1459 if (had_ctrlc ()) 1460 return -1; /* if stopped then not repeatable */ 1461 } 1462 1463 return rc ? rc : repeatable; 1464 } 1465 #endif 1466 1467 /* 1468 * Run a command using the selected parser. 1469 * 1470 * @param cmd Command to run 1471 * @param flag Execution flags (CMD_FLAG_...) 1472 * @return 0 on success, or != 0 on error. 1473 */ 1474 int run_command(const char *cmd, int flag) 1475 { 1476 #ifndef CONFIG_SYS_HUSH_PARSER 1477 /* 1478 * builtin_run_command can return 0 or 1 for success, so clean up 1479 * its result. 1480 */ 1481 if (builtin_run_command(cmd, flag) == -1) 1482 return 1; 1483 1484 return 0; 1485 #else 1486 return parse_string_outer(cmd, 1487 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP); 1488 #endif 1489 } 1490 1491 #ifndef CONFIG_SYS_HUSH_PARSER 1492 /** 1493 * Execute a list of command separated by ; or \n using the built-in parser. 1494 * 1495 * This function cannot take a const char * for the command, since if it 1496 * finds newlines in the string, it replaces them with \0. 1497 * 1498 * @param cmd String containing list of commands 1499 * @param flag Execution flags (CMD_FLAG_...) 1500 * @return 0 on success, or != 0 on error. 1501 */ 1502 static int builtin_run_command_list(char *cmd, int flag) 1503 { 1504 char *line, *next; 1505 int rcode = 0; 1506 1507 /* 1508 * Break into individual lines, and execute each line; terminate on 1509 * error. 1510 */ 1511 line = next = cmd; 1512 while (*next) { 1513 if (*next == '\n') { 1514 *next = '\0'; 1515 /* run only non-empty commands */ 1516 if (*line) { 1517 debug("** exec: \"%s\"\n", line); 1518 if (builtin_run_command(line, 0) < 0) { 1519 rcode = 1; 1520 break; 1521 } 1522 } 1523 line = next + 1; 1524 } 1525 ++next; 1526 } 1527 if (rcode == 0 && *line) 1528 rcode = (builtin_run_command(line, 0) >= 0); 1529 1530 return rcode; 1531 } 1532 #endif 1533 1534 int run_command_list(const char *cmd, int len, int flag) 1535 { 1536 int need_buff = 1; 1537 char *buff = (char *)cmd; /* cast away const */ 1538 int rcode = 0; 1539 1540 if (len == -1) { 1541 len = strlen(cmd); 1542 #ifdef CONFIG_SYS_HUSH_PARSER 1543 /* hush will never change our string */ 1544 need_buff = 0; 1545 #else 1546 /* the built-in parser will change our string if it sees \n */ 1547 need_buff = strchr(cmd, '\n') != NULL; 1548 #endif 1549 } 1550 if (need_buff) { 1551 buff = malloc(len + 1); 1552 if (!buff) 1553 return 1; 1554 memcpy(buff, cmd, len); 1555 buff[len] = '\0'; 1556 } 1557 #ifdef CONFIG_SYS_HUSH_PARSER 1558 rcode = parse_string_outer(buff, FLAG_PARSE_SEMICOLON); 1559 #else 1560 /* 1561 * This function will overwrite any \n it sees with a \0, which 1562 * is why it can't work with a const char *. Here we are making 1563 * using of internal knowledge of this function, to avoid always 1564 * doing a malloc() which is actually required only in a case that 1565 * is pretty rare. 1566 */ 1567 rcode = builtin_run_command_list(buff, flag); 1568 if (need_buff) 1569 free(buff); 1570 #endif 1571 1572 return rcode; 1573 } 1574 1575 /****************************************************************************/ 1576 1577 #if defined(CONFIG_CMD_RUN) 1578 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) 1579 { 1580 int i; 1581 1582 if (argc < 2) 1583 return CMD_RET_USAGE; 1584 1585 for (i=1; i<argc; ++i) { 1586 char *arg; 1587 1588 if ((arg = getenv (argv[i])) == NULL) { 1589 printf ("## Error: \"%s\" not defined\n", argv[i]); 1590 return 1; 1591 } 1592 1593 if (run_command(arg, flag) != 0) 1594 return 1; 1595 } 1596 return 0; 1597 } 1598 #endif 1599