| File: | src/usr.bin/grep/grep.c |
| Warning: | line 206, column 3 Value stored to 'len' is never read |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
| 1 | /* $OpenBSD: grep.c,v 1.67 2022/06/26 18:48:10 op Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1999 James Howard and Dag-Erling Coïdan Smørgrav |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 26 | * SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <sys/types.h> |
| 30 | #include <sys/stat.h> |
| 31 | #include <sys/queue.h> |
| 32 | |
| 33 | #include <ctype.h> |
| 34 | #include <err.h> |
| 35 | #include <errno(*__errno()).h> |
| 36 | #include <getopt.h> |
| 37 | #include <regex.h> |
| 38 | #include <stdio.h> |
| 39 | #include <stdlib.h> |
| 40 | #include <string.h> |
| 41 | #include <unistd.h> |
| 42 | |
| 43 | #include "grep.h" |
| 44 | |
| 45 | /* Flags passed to regcomp() and regexec() */ |
| 46 | int cflags; |
| 47 | int eflags = REG_STARTEND00004; |
| 48 | |
| 49 | int matchall; /* shortcut */ |
| 50 | int patterns, pattern_sz; |
| 51 | char **pattern; |
| 52 | regex_t *r_pattern; |
| 53 | fastgrep_t *fg_pattern; |
| 54 | |
| 55 | /* For regex errors */ |
| 56 | char re_error[RE_ERROR_BUF512 + 1]; |
| 57 | |
| 58 | /* Command-line flags */ |
| 59 | int Aflag; /* -A x: print x lines trailing each match */ |
| 60 | int Bflag; /* -B x: print x lines leading each match */ |
| 61 | int Eflag; /* -E: interpret pattern as extended regexp */ |
| 62 | int Fflag; /* -F: interpret pattern as list of fixed strings */ |
| 63 | int Hflag; /* -H: always print filename header */ |
| 64 | int Lflag; /* -L: only show names of files with no matches */ |
| 65 | int Rflag; /* -R: recursively search directory trees */ |
| 66 | int Zflag; /* -Z: decompress input before processing */ |
| 67 | int bflag; /* -b: show block numbers for each match */ |
| 68 | int cflag; /* -c: only show a count of matching lines */ |
| 69 | int hflag; /* -h: don't print filename headers */ |
| 70 | int iflag; /* -i: ignore case */ |
| 71 | int lflag; /* -l: only show names of files with matches */ |
| 72 | int mflag; /* -m x: stop reading the files after x matches */ |
| 73 | long long mcount; /* count for -m */ |
| 74 | long long mlimit; /* requested value for -m */ |
| 75 | int nflag; /* -n: show line numbers in front of matching lines */ |
| 76 | int oflag; /* -o: print each match */ |
| 77 | int qflag; /* -q: quiet mode (don't output anything) */ |
| 78 | int sflag; /* -s: silent mode (ignore errors) */ |
| 79 | int vflag; /* -v: only show non-matching lines */ |
| 80 | int wflag; /* -w: pattern must start and end on word boundaries */ |
| 81 | int xflag; /* -x: pattern must match entire line */ |
| 82 | int lbflag; /* --line-buffered */ |
| 83 | int nullflag; /* --null */ |
| 84 | const char *labelname; /* --label=name */ |
| 85 | |
| 86 | int binbehave = BIN_FILE_BIN0; |
| 87 | |
| 88 | enum { |
| 89 | BIN_OPT = CHAR_MAX0x7f + 1, |
| 90 | HELP_OPT, |
| 91 | MMAP_OPT, |
| 92 | LINEBUF_OPT, |
| 93 | NULL_OPT, |
| 94 | LABEL_OPT, |
| 95 | }; |
| 96 | |
| 97 | /* Housekeeping */ |
| 98 | int first; /* flag whether or not this is our first match */ |
| 99 | int tail; /* lines left to print */ |
| 100 | int file_err; /* file reading error */ |
| 101 | |
| 102 | struct patfile { |
| 103 | const char *pf_file; |
| 104 | SLIST_ENTRY(patfile)struct { struct patfile *sle_next; } pf_next; |
| 105 | }; |
| 106 | SLIST_HEAD(, patfile)struct { struct patfile *slh_first; } patfilelh; |
| 107 | |
| 108 | extern char *__progname; |
| 109 | |
| 110 | static void |
| 111 | usage(void) |
| 112 | { |
| 113 | fprintf(stderr(&__sF[2]), |
| 114 | #ifdef NOZ |
| 115 | "usage: %s [-abcEFGHhIiLlnoqRsUVvwx] [-A num] [-B num] [-C[num]]" |
| 116 | #else |
| 117 | "usage: %s [-abcEFGHhIiLlnoqRsUVvwxZ] [-A num] [-B num] [-C[num]]" |
| 118 | #endif |
| 119 | " [-e pattern]\n" |
| 120 | "\t[-f file] [-m num] [--binary-files=value] [--context[=num]]\n" |
| 121 | "\t[--label=name] [--line-buffered] [--null] [pattern]" |
| 122 | " [file ...]\n", |
| 123 | __progname); |
| 124 | exit(2); |
| 125 | } |
| 126 | |
| 127 | #ifdef NOZ |
| 128 | static const char optstr[] = "0123456789A:B:CEFGHILRUVabce:f:hilm:noqrsuvwxy"; |
| 129 | #else |
| 130 | static const char optstr[] = "0123456789A:B:CEFGHILRUVZabce:f:hilm:noqrsuvwxy"; |
| 131 | #endif |
| 132 | |
| 133 | static const struct option long_options[] = |
| 134 | { |
| 135 | {"binary-files", required_argument1, NULL((void *)0), BIN_OPT}, |
| 136 | {"help", no_argument0, NULL((void *)0), HELP_OPT}, |
| 137 | {"mmap", no_argument0, NULL((void *)0), MMAP_OPT}, |
| 138 | {"label", required_argument1, NULL((void *)0), LABEL_OPT}, |
| 139 | {"line-buffered", no_argument0, NULL((void *)0), LINEBUF_OPT}, |
| 140 | {"null", no_argument0, NULL((void *)0), NULL_OPT}, |
| 141 | {"after-context", required_argument1, NULL((void *)0), 'A'}, |
| 142 | {"before-context", required_argument1, NULL((void *)0), 'B'}, |
| 143 | {"context", optional_argument2, NULL((void *)0), 'C'}, |
| 144 | {"devices", required_argument1, NULL((void *)0), 'D'}, |
| 145 | {"extended-regexp", no_argument0, NULL((void *)0), 'E'}, |
| 146 | {"fixed-strings", no_argument0, NULL((void *)0), 'F'}, |
| 147 | {"basic-regexp", no_argument0, NULL((void *)0), 'G'}, |
| 148 | {"with-filename", no_argument0, NULL((void *)0), 'H'}, |
| 149 | {"binary", no_argument0, NULL((void *)0), 'U'}, |
| 150 | {"version", no_argument0, NULL((void *)0), 'V'}, |
| 151 | {"text", no_argument0, NULL((void *)0), 'a'}, |
| 152 | {"byte-offset", no_argument0, NULL((void *)0), 'b'}, |
| 153 | {"count", no_argument0, NULL((void *)0), 'c'}, |
| 154 | {"regexp", required_argument1, NULL((void *)0), 'e'}, |
| 155 | {"file", required_argument1, NULL((void *)0), 'f'}, |
| 156 | {"no-filename", no_argument0, NULL((void *)0), 'h'}, |
| 157 | {"ignore-case", no_argument0, NULL((void *)0), 'i'}, |
| 158 | {"files-without-match", no_argument0, NULL((void *)0), 'L'}, |
| 159 | {"files-with-matches", no_argument0, NULL((void *)0), 'l'}, |
| 160 | {"max-count", required_argument1, NULL((void *)0), 'm'}, |
| 161 | {"line-number", no_argument0, NULL((void *)0), 'n'}, |
| 162 | {"quiet", no_argument0, NULL((void *)0), 'q'}, |
| 163 | {"silent", no_argument0, NULL((void *)0), 'q'}, |
| 164 | {"recursive", no_argument0, NULL((void *)0), 'r'}, |
| 165 | {"no-messages", no_argument0, NULL((void *)0), 's'}, |
| 166 | {"revert-match", no_argument0, NULL((void *)0), 'v'}, |
| 167 | {"word-regexp", no_argument0, NULL((void *)0), 'w'}, |
| 168 | {"line-regexp", no_argument0, NULL((void *)0), 'x'}, |
| 169 | {"unix-byte-offsets", no_argument0, NULL((void *)0), 'u'}, |
| 170 | #ifndef NOZ |
| 171 | {"decompress", no_argument0, NULL((void *)0), 'Z'}, |
| 172 | #endif |
| 173 | {NULL((void *)0), no_argument0, NULL((void *)0), 0} |
| 174 | }; |
| 175 | |
| 176 | |
| 177 | static void |
| 178 | add_pattern(char *pat, size_t len) |
| 179 | { |
| 180 | if (!xflag && (len == 0 || matchall)) { |
| 181 | matchall = 1; |
| 182 | return; |
| 183 | } |
| 184 | if (patterns == pattern_sz) { |
| 185 | pattern_sz *= 2; |
| 186 | pattern = grep_reallocarray(pattern, ++pattern_sz, sizeof(*pattern)); |
| 187 | } |
| 188 | if (len > 0 && pat[len - 1] == '\n') |
| 189 | --len; |
| 190 | /* pat may not be NUL-terminated */ |
| 191 | if (wflag && !Fflag) { |
| 192 | int bol = 0, eol = 0, extra; |
| 193 | if (pat[0] == '^') |
| 194 | bol = 1; |
| 195 | if (len > 0 && pat[len - 1] == '$') |
| 196 | eol = 1; |
| 197 | extra = Eflag ? 2 : 4; |
| 198 | pattern[patterns] = grep_malloc(len + 15 + extra); |
| 199 | snprintf(pattern[patterns], len + 15 + extra, |
| 200 | "%s[[:<:]]%s%.*s%s[[:>:]]%s", |
| 201 | bol ? "^" : "", |
| 202 | Eflag ? "(" : "\\(", |
| 203 | (int)len - bol - eol, pat + bol, |
| 204 | Eflag ? ")" : "\\)", |
| 205 | eol ? "$" : ""); |
| 206 | len += 14 + extra; |
Value stored to 'len' is never read | |
| 207 | } else { |
| 208 | pattern[patterns] = grep_malloc(len + 1); |
| 209 | memcpy(pattern[patterns], pat, len); |
| 210 | pattern[patterns][len] = '\0'; |
| 211 | } |
| 212 | ++patterns; |
| 213 | } |
| 214 | |
| 215 | static void |
| 216 | add_patterns(char *pats) |
| 217 | { |
| 218 | char *nl; |
| 219 | |
| 220 | while ((nl = strchr(pats, '\n')) != NULL((void *)0)) { |
| 221 | add_pattern(pats, nl - pats); |
| 222 | pats = nl + 1; |
| 223 | } |
| 224 | add_pattern(pats, strlen(pats)); |
| 225 | } |
| 226 | |
| 227 | static void |
| 228 | read_patterns(const char *fn) |
| 229 | { |
| 230 | FILE *f; |
| 231 | char *line; |
| 232 | ssize_t len; |
| 233 | size_t linesize; |
| 234 | |
| 235 | if ((f = fopen(fn, "r")) == NULL((void *)0)) |
| 236 | err(2, "%s", fn); |
| 237 | line = NULL((void *)0); |
| 238 | linesize = 0; |
| 239 | while ((len = getline(&line, &linesize, f)) != -1) |
| 240 | add_pattern(line, *line == '\n' ? 0 : len); |
| 241 | if (ferror(f)(!__isthreaded ? (((f)->_flags & 0x0040) != 0) : (ferror )(f))) |
| 242 | err(2, "%s", fn); |
| 243 | fclose(f); |
| 244 | free(line); |
| 245 | } |
| 246 | |
| 247 | int |
| 248 | main(int argc, char *argv[]) |
| 249 | { |
| 250 | int c, lastc, prevoptind, newarg, i, needpattern, exprs, expr_sz; |
| 251 | struct patfile *patfile, *pf_next; |
| 252 | long l; |
| 253 | char **expr; |
| 254 | const char *errstr; |
| 255 | |
| 256 | if (pledge("stdio rpath", NULL((void *)0)) == -1) |
| 257 | err(2, "pledge"); |
| 258 | |
| 259 | SLIST_INIT(&patfilelh){ ((&patfilelh)->slh_first) = ((void *)0); }; |
| 260 | switch (__progname[0]) { |
| 261 | case 'e': |
| 262 | Eflag = 1; |
| 263 | break; |
| 264 | case 'f': |
| 265 | Fflag = 1; |
| 266 | break; |
| 267 | #ifndef NOZ |
| 268 | case 'z': |
| 269 | Zflag = 1; |
| 270 | switch(__progname[1]) { |
| 271 | case 'e': |
| 272 | Eflag = 1; |
| 273 | break; |
| 274 | case 'f': |
| 275 | Fflag = 1; |
| 276 | break; |
| 277 | } |
| 278 | break; |
| 279 | #endif |
| 280 | } |
| 281 | |
| 282 | lastc = '\0'; |
| 283 | newarg = 1; |
| 284 | prevoptind = 1; |
| 285 | needpattern = 1; |
| 286 | expr_sz = exprs = 0; |
| 287 | expr = NULL((void *)0); |
| 288 | while ((c = getopt_long(argc, argv, optstr, |
| 289 | long_options, NULL((void *)0))) != -1) { |
| 290 | switch (c) { |
| 291 | case '0': case '1': case '2': case '3': case '4': |
| 292 | case '5': case '6': case '7': case '8': case '9': |
| 293 | if (newarg || !isdigit(lastc)) |
| 294 | Aflag = 0; |
| 295 | else if (Aflag > INT_MAX0x7fffffff / 10) |
| 296 | errx(2, "context out of range"); |
| 297 | Aflag = Bflag = (Aflag * 10) + (c - '0'); |
| 298 | break; |
| 299 | case 'A': |
| 300 | case 'B': |
| 301 | l = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr); |
| 302 | if (errstr != NULL((void *)0)) |
| 303 | errx(2, "context %s", errstr); |
| 304 | if (c == 'A') |
| 305 | Aflag = (int)l; |
| 306 | else |
| 307 | Bflag = (int)l; |
| 308 | break; |
| 309 | case 'C': |
| 310 | if (optarg == NULL((void *)0)) |
| 311 | Aflag = Bflag = 2; |
| 312 | else { |
| 313 | l = strtonum(optarg, 1, INT_MAX0x7fffffff, &errstr); |
| 314 | if (errstr != NULL((void *)0)) |
| 315 | errx(2, "context %s", errstr); |
| 316 | Aflag = Bflag = (int)l; |
| 317 | } |
| 318 | break; |
| 319 | case 'E': |
| 320 | Fflag = 0; |
| 321 | Eflag = 1; |
| 322 | break; |
| 323 | case 'F': |
| 324 | Eflag = 0; |
| 325 | Fflag = 1; |
| 326 | break; |
| 327 | case 'G': |
| 328 | Eflag = Fflag = 0; |
| 329 | break; |
| 330 | case 'H': |
| 331 | Hflag = 1; |
| 332 | break; |
| 333 | case 'I': |
| 334 | binbehave = BIN_FILE_SKIP1; |
| 335 | break; |
| 336 | case 'L': |
| 337 | lflag = 0; |
| 338 | Lflag = qflag = 1; |
| 339 | break; |
| 340 | case 'R': |
| 341 | case 'r': |
| 342 | Rflag = 1; |
| 343 | break; |
| 344 | case 'U': |
| 345 | binbehave = BIN_FILE_BIN0; |
| 346 | break; |
| 347 | case 'V': |
| 348 | fprintf(stderr(&__sF[2]), "grep version %u.%u\n", VER_MAJ0, VER_MIN9); |
| 349 | exit(0); |
| 350 | break; |
| 351 | #ifndef NOZ |
| 352 | case 'Z': |
| 353 | Zflag = 1; |
| 354 | break; |
| 355 | #endif |
| 356 | case 'a': |
| 357 | binbehave = BIN_FILE_TEXT2; |
| 358 | break; |
| 359 | case 'b': |
| 360 | bflag = 1; |
| 361 | break; |
| 362 | case 'c': |
| 363 | cflag = 1; |
| 364 | break; |
| 365 | case 'e': |
| 366 | /* defer adding of expressions until all arguments are parsed */ |
| 367 | if (exprs == expr_sz) { |
| 368 | expr_sz *= 2; |
| 369 | expr = grep_reallocarray(expr, ++expr_sz, |
| 370 | sizeof(*expr)); |
| 371 | } |
| 372 | needpattern = 0; |
| 373 | expr[exprs] = optarg; |
| 374 | ++exprs; |
| 375 | break; |
| 376 | case 'f': |
| 377 | patfile = grep_malloc(sizeof(*patfile)); |
| 378 | patfile->pf_file = optarg; |
| 379 | SLIST_INSERT_HEAD(&patfilelh, patfile, pf_next)do { (patfile)->pf_next.sle_next = (&patfilelh)->slh_first ; (&patfilelh)->slh_first = (patfile); } while (0); |
| 380 | needpattern = 0; |
| 381 | break; |
| 382 | case 'h': |
| 383 | hflag = 1; |
| 384 | break; |
| 385 | case 'i': |
| 386 | case 'y': |
| 387 | iflag = 1; |
| 388 | cflags |= REG_ICASE0002; |
| 389 | break; |
| 390 | case 'l': |
| 391 | Lflag = 0; |
| 392 | lflag = qflag = 1; |
| 393 | break; |
| 394 | case 'm': |
| 395 | mflag = 1; |
| 396 | mlimit = mcount = strtonum(optarg, 0, LLONG_MAX0x7fffffffffffffffLL, |
| 397 | &errstr); |
| 398 | if (errstr != NULL((void *)0)) |
| 399 | errx(2, "invalid max-count %s: %s", |
| 400 | optarg, errstr); |
| 401 | break; |
| 402 | case 'n': |
| 403 | nflag = 1; |
| 404 | break; |
| 405 | case 'o': |
| 406 | oflag = 1; |
| 407 | break; |
| 408 | case 'q': |
| 409 | qflag = 1; |
| 410 | break; |
| 411 | case 's': |
| 412 | sflag = 1; |
| 413 | break; |
| 414 | case 'v': |
| 415 | vflag = 1; |
| 416 | break; |
| 417 | case 'w': |
| 418 | wflag = 1; |
| 419 | break; |
| 420 | case 'x': |
| 421 | xflag = 1; |
| 422 | break; |
| 423 | case BIN_OPT: |
| 424 | if (strcmp("binary", optarg) == 0) |
| 425 | binbehave = BIN_FILE_BIN0; |
| 426 | else if (strcmp("without-match", optarg) == 0) |
| 427 | binbehave = BIN_FILE_SKIP1; |
| 428 | else if (strcmp("text", optarg) == 0) |
| 429 | binbehave = BIN_FILE_TEXT2; |
| 430 | else |
| 431 | errx(2, "Unknown binary-files option"); |
| 432 | break; |
| 433 | case 'u': |
| 434 | case MMAP_OPT: |
| 435 | /* default, compatibility */ |
| 436 | break; |
| 437 | case LABEL_OPT: |
| 438 | labelname = optarg; |
| 439 | break; |
| 440 | case LINEBUF_OPT: |
| 441 | lbflag = 1; |
| 442 | break; |
| 443 | case NULL_OPT: |
| 444 | nullflag = 1; |
| 445 | break; |
| 446 | case HELP_OPT: |
| 447 | default: |
| 448 | usage(); |
| 449 | } |
| 450 | lastc = c; |
| 451 | newarg = optind != prevoptind; |
| 452 | prevoptind = optind; |
| 453 | } |
| 454 | argc -= optind; |
| 455 | argv += optind; |
| 456 | |
| 457 | for (i = 0; i < exprs; i++) |
| 458 | add_patterns(expr[i]); |
| 459 | free(expr); |
| 460 | expr = NULL((void *)0); |
| 461 | |
| 462 | for (patfile = SLIST_FIRST(&patfilelh)((&patfilelh)->slh_first); patfile != NULL((void *)0); |
| 463 | patfile = pf_next) { |
| 464 | pf_next = SLIST_NEXT(patfile, pf_next)((patfile)->pf_next.sle_next); |
| 465 | read_patterns(patfile->pf_file); |
| 466 | free(patfile); |
| 467 | } |
| 468 | |
| 469 | if (argc == 0 && needpattern) |
| 470 | usage(); |
| 471 | |
| 472 | if (argc != 0 && needpattern) { |
| 473 | add_patterns(*argv); |
| 474 | --argc; |
| 475 | ++argv; |
| 476 | } |
| 477 | if (argc == 1 && strcmp(*argv, "-") == 0) { |
| 478 | /* stdin */ |
| 479 | --argc; |
| 480 | ++argv; |
| 481 | } |
| 482 | |
| 483 | if (Eflag) |
| 484 | cflags |= REG_EXTENDED0001; |
| 485 | if (Fflag) |
| 486 | cflags |= REG_NOSPEC0020; |
| 487 | #ifdef SMALL |
| 488 | /* Sorry, this won't work */ |
| 489 | if (Fflag && wflag) |
| 490 | errx(1, "Can't use small fgrep with -w"); |
| 491 | #endif |
| 492 | fg_pattern = grep_calloc(patterns, sizeof(*fg_pattern)); |
| 493 | r_pattern = grep_calloc(patterns, sizeof(*r_pattern)); |
| 494 | for (i = 0; i < patterns; ++i) { |
| 495 | /* Check if cheating is allowed (always is for fgrep). */ |
| 496 | #ifndef SMALL |
| 497 | if (Fflag) { |
| 498 | fgrepcomp(&fg_pattern[i], pattern[i]); |
| 499 | } else |
| 500 | #endif |
| 501 | { |
| 502 | if (fastcomp(&fg_pattern[i], pattern[i])) { |
| 503 | /* Fall back to full regex library */ |
| 504 | c = regcomp(&r_pattern[i], pattern[i], cflags); |
| 505 | if (c != 0) { |
| 506 | regerror(c, &r_pattern[i], re_error, |
| 507 | RE_ERROR_BUF512); |
| 508 | errx(2, "%s", re_error); |
| 509 | } |
| 510 | } |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | if (lbflag) |
| 515 | setvbuf(stdout(&__sF[1]), NULL((void *)0), _IOLBF1, 0); |
| 516 | |
| 517 | if ((argc == 0 || argc == 1) && !Rflag && !Hflag) |
| 518 | hflag = 1; |
| 519 | |
| 520 | if (argc == 0 && !Rflag) |
| 521 | exit(!procfile(NULL((void *)0))); |
| 522 | |
| 523 | if (Rflag) |
| 524 | c = grep_tree(argv); |
| 525 | else |
| 526 | for (c = 0; argc--; ++argv) |
| 527 | c |= procfile(*argv); |
| 528 | |
| 529 | exit(c ? (file_err ? (qflag ? 0 : 2) : 0) : (file_err ? 2 : 1)); |
| 530 | } |