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authorGlenn L McGrath <bug1@ihug.co.nz>2003-10-30 22:47:16 +0000
committerGlenn L McGrath <bug1@ihug.co.nz>2003-10-30 22:47:16 +0000
commit09c295a5bc40f27612cc6375c7c4de3eb16efdf0 (patch)
tree5bbc81dd827a011c43f9afe8c9cd6ee3394dfba9 /findutils
parent00ed36fd5248de9a612d9417918c5a44406d4644 (diff)
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Diffstat (limited to 'findutils')
-rw-r--r--findutils/xargs.c779
1 files changed, 392 insertions, 387 deletions
diff --git a/findutils/xargs.c b/findutils/xargs.c
index 8bab44623..e2e6d3abd 100644
--- a/findutils/xargs.c
+++ b/findutils/xargs.c
@@ -65,52 +65,52 @@
65 This function have special algorithm. 65 This function have special algorithm.
66 Don`t use fork and include to main! 66 Don`t use fork and include to main!
67*/ 67*/
68static int 68static int xargs_exec(char *const *args)
69xargs_exec (char *const *args)
70{ 69{
71 pid_t p; 70 pid_t p;
72 volatile int exec_errno = 0; /* shared vfork stack */ 71 volatile int exec_errno = 0; /* shared vfork stack */
73 72
74 if ((p = vfork ()) >= 0) { 73 if ((p = vfork()) >= 0) {
75 if (p == 0) { 74 if (p == 0) {
76 /* vfork -- child */ 75 /* vfork -- child */
77 execvp (args[0], args); 76 execvp(args[0], args);
78 exec_errno = errno; /* set error to shared stack */ 77 exec_errno = errno; /* set error to shared stack */
79 _exit (1); 78 _exit(1);
80 } else { 79 } else {
81 /* vfork -- parent */ 80 /* vfork -- parent */
82 int status; 81 int status;
83 82
84 while (wait (&status) == (pid_t) - 1) 83 while (wait(&status) == (pid_t) - 1)
85 if (errno != EINTR) 84 if (errno != EINTR)
86 break; 85 break;
87 if (exec_errno) { 86 if (exec_errno) {
88 errno = exec_errno; 87 errno = exec_errno;
89 bb_perror_msg ("%s", args[0]); 88 bb_perror_msg("%s", args[0]);
90 return exec_errno == ENOENT ? 127 : 126; 89 return exec_errno == ENOENT ? 127 : 126;
91 } else { 90 } else {
92 if (WEXITSTATUS (status) == 255) { 91 if (WEXITSTATUS(status) == 255) {
93 bb_error_msg ("%s: exited with status 255; aborting", args[0]); 92 bb_error_msg("%s: exited with status 255; aborting",
94 return 124; 93 args[0]);
95 } 94 return 124;
96 if (WIFSTOPPED (status)) { 95 }
97 bb_error_msg ("%s: stopped by signal %d", args[0], 96 if (WIFSTOPPED(status)) {
98 WSTOPSIG (status)); 97 bb_error_msg("%s: stopped by signal %d", args[0],
99 return 125; 98 WSTOPSIG(status));
100 } 99 return 125;
101 if (WIFSIGNALED (status)) { 100 }
102 bb_error_msg ("%s: terminated by signal %d", args[0], 101 if (WIFSIGNALED(status)) {
103 WTERMSIG (status)); 102 bb_error_msg("%s: terminated by signal %d", args[0],
104 return 125; 103 WTERMSIG(status));
104 return 125;
105 }
106 if (WEXITSTATUS(status) != 0)
107 return 123;
108 return 0;
109 }
105 } 110 }
106 if (WEXITSTATUS (status) != 0) 111 } else {
107 return 123; 112 bb_perror_msg_and_die("vfork");
108 return 0;
109 }
110 } 113 }
111 } else {
112 bb_perror_msg_and_die ("vfork");
113 }
114} 114}
115 115
116 116
@@ -127,207 +127,208 @@ static int eof_stdin_detected;
127 || (c) == '\f' || (c) == '\v') 127 || (c) == '\f' || (c) == '\v')
128 128
129#ifdef CONFIG_FEATURE_XARGS_SUPPORT_QUOTES 129#ifdef CONFIG_FEATURE_XARGS_SUPPORT_QUOTES
130static xlist_t * 130static xlist_t *process_stdin(xlist_t * list_arg, const char *eof_str,
131process_stdin (xlist_t *list_arg, const char *eof_str, size_t mc, char *buf) 131 size_t mc, char *buf)
132{ 132{
133#define NORM 0 133#define NORM 0
134#define QUOTE 1 134#define QUOTE 1
135#define BACKSLASH 2 135#define BACKSLASH 2
136#define SPACE 4 136#define SPACE 4
137 137
138 char *s = NULL; /* start word */ 138 char *s = NULL; /* start word */
139 char *p = NULL; /* pointer to end word */ 139 char *p = NULL; /* pointer to end word */
140 char q = 0; /* quote char */ 140 char q = 0; /* quote char */
141 char state = NORM; 141 char state = NORM;
142 char eof_str_detected = 0; 142 char eof_str_detected = 0;
143 size_t line_l = 0; /* size loaded args line */ 143 size_t line_l = 0; /* size loaded args line */
144 int c; /* current char */ 144 int c; /* current char */
145 xlist_t *cur; 145 xlist_t *cur;
146 xlist_t *prev; 146 xlist_t *prev;
147 147
148 for(prev = cur = list_arg; cur; cur = cur->link) { 148 for (prev = cur = list_arg; cur; cur = cur->link) {
149 line_l += cur->lenght; /* previous allocated */ 149 line_l += cur->lenght; /* previous allocated */
150 if(prev != cur) 150 if (prev != cur)
151 prev = prev->link; 151 prev = prev->link;
152 }
153
154 while(!eof_stdin_detected) {
155 c = getchar();
156 if(c == EOF) {
157 eof_stdin_detected++;
158 if(s)
159 goto unexpected_eof;
160 break;
161 } 152 }
162 if(eof_str_detected) 153
163 continue; 154 while (!eof_stdin_detected) {
164 if (state == BACKSLASH) { 155 c = getchar();
165 state = NORM; 156 if (c == EOF) {
166 goto set; 157 eof_stdin_detected++;
167 } else if (state == QUOTE) { 158 if (s)
168 if (c == q) { 159 goto unexpected_eof;
169 q = 0; 160 break;
170 state = NORM;
171 } else {
172 goto set;
173 }
174 } else /* if(state == NORM) */ {
175 if (ISSPACE (c)) {
176 if (s) {
177unexpected_eof:
178 state = SPACE;
179 c = 0;
180 goto set;
181 } 161 }
182 } else { 162 if (eof_str_detected)
183 if (s == NULL) 163 continue;
184 s = p = buf; 164 if (state == BACKSLASH) {
185 if (c == '\\') { 165 state = NORM;
186 state = BACKSLASH; 166 goto set;
187 } else if (c == '\'' || c == '"') { 167 } else if (state == QUOTE) {
188 q = c; 168 if (c == q) {
189 state = QUOTE; 169 q = 0;
190 } else { 170 state = NORM;
191set: 171 } else {
192 if( (p-buf) >= mc) 172 goto set;
193 bb_error_msg_and_die ("argument line too long"); 173 }
194 *p++ = c; 174 } else { /* if(state == NORM) */
175
176 if (ISSPACE(c)) {
177 if (s) {
178 unexpected_eof:
179 state = SPACE;
180 c = 0;
181 goto set;
182 }
183 } else {
184 if (s == NULL)
185 s = p = buf;
186 if (c == '\\') {
187 state = BACKSLASH;
188 } else if (c == '\'' || c == '"') {
189 q = c;
190 state = QUOTE;
191 } else {
192 set:
193 if ((p - buf) >= mc)
194 bb_error_msg_and_die("argument line too long");
195 *p++ = c;
196 }
197 }
198 }
199 if (state == SPACE) { /* word's delimiter or EOF detected */
200 if (q)
201 bb_error_msg_and_die("unmatched %s quote",
202 q == '\'' ? "single" : "double");
203 /* word loaded */
204 if (eof_str) {
205 eof_str_detected = strcmp(s, eof_str) == 0;
206 }
207 if (!eof_str_detected) {
208 size_t lenght = (p - buf);
209
210 cur = xmalloc(sizeof(xlist_t) + lenght);
211 cur->data = memcpy(cur + 1, s, lenght);
212 cur->lenght = lenght;
213 cur->link = NULL;
214 if (prev == NULL) {
215 list_arg = cur;
216 } else {
217 prev->link = cur;
218 }
219 prev = cur;
220 line_l += lenght;
221 if (line_l > mc) {
222 /* stop memory usage :-) */
223 break;
224 }
225 }
226 s = NULL;
227 state = NORM;
195 } 228 }
196 }
197 }
198 if (state == SPACE) { /* word's delimiter or EOF detected */
199 if (q)
200 bb_error_msg_and_die ("unmatched %s quote",
201 q == '\'' ? "single" : "double");
202 /* word loaded */
203 if(eof_str) {
204 eof_str_detected = strcmp(s, eof_str) == 0;
205 }
206 if(!eof_str_detected) {
207 size_t lenght = (p-buf);
208
209 cur = xmalloc(sizeof(xlist_t) + lenght);
210 cur->data = memcpy(cur + 1, s, lenght);
211 cur->lenght = lenght;
212 cur->link = NULL;
213 if(prev == NULL) {
214 list_arg = cur;
215 } else {
216 prev->link = cur;
217 }
218 prev = cur;
219 line_l += lenght;
220 if(line_l > mc) {
221 /* stop memory usage :-) */
222 break;
223 }
224 }
225 s = NULL;
226 state = NORM;
227 } 229 }
228 } 230 return list_arg;
229 return list_arg;
230} 231}
231#else 232#else
232/* The variant is unsupport single, double quotes and backslash */ 233/* The variant is unsupport single, double quotes and backslash */
233static xlist_t * 234static xlist_t *process_stdin(xlist_t * list_arg, const char *eof_str,
234process_stdin (xlist_t *list_arg, const char *eof_str, size_t mc, char *buf) 235 size_t mc, char *buf)
235{ 236{
236 237
237 int c; /* current char */ 238 int c; /* current char */
238 int eof_str_detected = 0; 239 int eof_str_detected = 0;
239 char *s = NULL; /* start word */ 240 char *s = NULL; /* start word */
240 char *p = NULL; /* pointer to end word */ 241 char *p = NULL; /* pointer to end word */
241 size_t line_l = 0; /* size loaded args line */ 242 size_t line_l = 0; /* size loaded args line */
242 xlist_t *cur; 243 xlist_t *cur;
243 xlist_t *prev; 244 xlist_t *prev;
244 245
245 for(prev = cur = list_arg; cur; cur = cur->link) { 246 for (prev = cur = list_arg; cur; cur = cur->link) {
246 line_l += cur->lenght; /* previous allocated */ 247 line_l += cur->lenght; /* previous allocated */
247 if(prev != cur) 248 if (prev != cur)
248 prev = prev->link; 249 prev = prev->link;
249 }
250
251 while(!eof_stdin_detected) {
252 c = getchar();
253 if(c == EOF) {
254 eof_stdin_detected++;
255 }
256 if(eof_str_detected)
257 continue;
258 if (c == EOF || ISSPACE (c)) {
259 if(s == NULL)
260 continue;
261 c = EOF;
262 } 250 }
263 if (s == NULL) 251
264 s = p = buf; 252 while (!eof_stdin_detected) {
265 if( (p-buf) >= mc) 253 c = getchar();
266 bb_error_msg_and_die ("argument line too long"); 254 if (c == EOF) {
267 *p++ = c == EOF ? 0 : c; 255 eof_stdin_detected++;
268 if (c == EOF) { /* word's delimiter or EOF detected */
269 /* word loaded */
270 if(eof_str) {
271 eof_str_detected = strcmp(s, eof_str) == 0;
272 }
273 if(!eof_str_detected) {
274 size_t lenght = (p-buf);
275
276 cur = xmalloc(sizeof(xlist_t) + lenght);
277 cur->data = memcpy(cur + 1, s, lenght);
278 cur->lenght = lenght;
279 cur->link = NULL;
280 if(prev == NULL) {
281 list_arg = cur;
282 } else {
283 prev->link = cur;
284 } 256 }
285 prev = cur; 257 if (eof_str_detected)
286 line_l += lenght; 258 continue;
287 if(line_l > mc) { 259 if (c == EOF || ISSPACE(c)) {
288 /* stop memory usage :-) */ 260 if (s == NULL)
289 break; 261 continue;
262 c = EOF;
263 }
264 if (s == NULL)
265 s = p = buf;
266 if ((p - buf) >= mc)
267 bb_error_msg_and_die("argument line too long");
268 *p++ = c == EOF ? 0 : c;
269 if (c == EOF) { /* word's delimiter or EOF detected */
270 /* word loaded */
271 if (eof_str) {
272 eof_str_detected = strcmp(s, eof_str) == 0;
273 }
274 if (!eof_str_detected) {
275 size_t lenght = (p - buf);
276
277 cur = xmalloc(sizeof(xlist_t) + lenght);
278 cur->data = memcpy(cur + 1, s, lenght);
279 cur->lenght = lenght;
280 cur->link = NULL;
281 if (prev == NULL) {
282 list_arg = cur;
283 } else {
284 prev->link = cur;
285 }
286 prev = cur;
287 line_l += lenght;
288 if (line_l > mc) {
289 /* stop memory usage :-) */
290 break;
291 }
292 s = NULL;
293 }
290 } 294 }
291 s = NULL;
292 }
293 } 295 }
294 } 296 return list_arg;
295 return list_arg;
296} 297}
297#endif /* CONFIG_FEATURE_XARGS_SUPPORT_QUOTES */ 298#endif /* CONFIG_FEATURE_XARGS_SUPPORT_QUOTES */
298 299
299 300
300#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION 301#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION
301/* Prompt the user for a response, and 302/* Prompt the user for a response, and
302 if the user responds affirmatively, return true; 303 if the user responds affirmatively, return true;
303 otherwise, return false. Used "/dev/tty", not stdin. */ 304 otherwise, return false. Used "/dev/tty", not stdin. */
304static int 305static int xargs_ask_confirmation(void)
305xargs_ask_confirmation (void)
306{ 306{
307 static FILE *tty_stream; 307 static FILE *tty_stream;
308 int c, savec; 308 int c, savec;
309 309
310 if (!tty_stream) { 310 if (!tty_stream) {
311 tty_stream = fopen ("/dev/tty", "r"); 311 tty_stream = fopen("/dev/tty", "r");
312 if (!tty_stream) 312 if (!tty_stream)
313 bb_perror_msg_and_die ("/dev/tty"); 313 bb_perror_msg_and_die("/dev/tty");
314 /* pranoidal security by vodz */ 314 /* pranoidal security by vodz */
315 fcntl(fileno(tty_stream), F_SETFD, FD_CLOEXEC); 315 fcntl(fileno(tty_stream), F_SETFD, FD_CLOEXEC);
316 } 316 }
317 fputs (" ?...", stderr); 317 fputs(" ?...", stderr);
318 fflush (stderr); 318 fflush(stderr);
319 c = savec = getc (tty_stream); 319 c = savec = getc(tty_stream);
320 while (c != EOF && c != '\n') 320 while (c != EOF && c != '\n')
321 c = getc (tty_stream); 321 c = getc(tty_stream);
322 if (savec == 'y' || savec == 'Y') 322 if (savec == 'y' || savec == 'Y')
323 return 1; 323 return 1;
324 return 0; 324 return 0;
325} 325}
326
326# define OPT_INC_P 1 327# define OPT_INC_P 1
327#else 328#else
328# define OPT_INC_P 0 329# define OPT_INC_P 0
329# define xargs_ask_confirmation() 1 330# define xargs_ask_confirmation() 1
330#endif /* CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION */ 331#endif /* CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION */
331 332
332#ifdef CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT 333#ifdef CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT
333# define OPT_INC_X 1 334# define OPT_INC_X 1
@@ -336,65 +337,66 @@ xargs_ask_confirmation (void)
336#endif 337#endif
337 338
338#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM 339#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM
339static xlist_t * 340static xlist_t *process0_stdin(xlist_t * list_arg, const char *eof_str,
340process0_stdin (xlist_t *list_arg, const char *eof_str, size_t mc, char *buf) 341 size_t mc, char *buf)
341{ 342{
342 int c; /* current char */ 343 int c; /* current char */
343 char *s = NULL; /* start word */ 344 char *s = NULL; /* start word */
344 char *p = NULL; /* pointer to end word */ 345 char *p = NULL; /* pointer to end word */
345 size_t line_l = 0; /* size loaded args line */ 346 size_t line_l = 0; /* size loaded args line */
346 xlist_t *cur; 347 xlist_t *cur;
347 xlist_t *prev; 348 xlist_t *prev;
348 349
349 for(prev = cur = list_arg; cur; cur = cur->link) { 350 for (prev = cur = list_arg; cur; cur = cur->link) {
350 line_l += cur->lenght; /* previous allocated */ 351 line_l += cur->lenght; /* previous allocated */
351 if(prev != cur) 352 if (prev != cur)
352 prev = prev->link; 353 prev = prev->link;
353 }
354
355 while(!eof_stdin_detected) {
356 c = getchar();
357 if(c == EOF) {
358 eof_stdin_detected++;
359 if(s == NULL)
360 break;
361 c = 0;
362 } 354 }
363 if (s == NULL) 355
364 s = p = buf; 356 while (!eof_stdin_detected) {
365 if( (p-buf) >= mc) 357 c = getchar();
366 bb_error_msg_and_die ("argument line too long"); 358 if (c == EOF) {
367 *p++ = c; 359 eof_stdin_detected++;
368 if (c == 0) { /* word's delimiter or EOF detected */ 360 if (s == NULL)
369 /* word loaded */ 361 break;
370 size_t lenght = (p-buf); 362 c = 0;
371
372 cur = xmalloc(sizeof(xlist_t) + lenght);
373 cur->data = memcpy(cur + 1, s, lenght);
374 cur->lenght = lenght;
375 cur->link = NULL;
376 if(prev == NULL) {
377 list_arg = cur;
378 } else {
379 prev->link = cur;
380 } 363 }
381 prev = cur; 364 if (s == NULL)
382 line_l += lenght; 365 s = p = buf;
383 if(line_l > mc) { 366 if ((p - buf) >= mc)
384 /* stop memory usage :-) */ 367 bb_error_msg_and_die("argument line too long");
385 break; 368 *p++ = c;
369 if (c == 0) { /* word's delimiter or EOF detected */
370 /* word loaded */
371 size_t lenght = (p - buf);
372
373 cur = xmalloc(sizeof(xlist_t) + lenght);
374 cur->data = memcpy(cur + 1, s, lenght);
375 cur->lenght = lenght;
376 cur->link = NULL;
377 if (prev == NULL) {
378 list_arg = cur;
379 } else {
380 prev->link = cur;
381 }
382 prev = cur;
383 line_l += lenght;
384 if (line_l > mc) {
385 /* stop memory usage :-) */
386 break;
387 }
388 s = NULL;
386 } 389 }
387 s = NULL;
388 } 390 }
389 } 391 return list_arg;
390 return list_arg;
391} 392}
393
392# define READ_ARGS(l, e, nmc, mc) (*read_args)(l, e, nmc, mc) 394# define READ_ARGS(l, e, nmc, mc) (*read_args)(l, e, nmc, mc)
393# define OPT_INC_0 1 /* future use */ 395# define OPT_INC_0 1 /* future use */
394#else 396#else
395# define OPT_INC_0 0 /* future use */ 397# define OPT_INC_0 0 /* future use */
396# define READ_ARGS(l, e, nmc, mc) process_stdin(l, e, nmc, mc) 398# define READ_ARGS(l, e, nmc, mc) process_stdin(l, e, nmc, mc)
397#endif /* CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM */ 399#endif /* CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM */
398 400
399 401
400#define OPT_VERBOSE (1<<0) 402#define OPT_VERBOSE (1<<0)
@@ -405,7 +407,7 @@ process0_stdin (xlist_t *list_arg, const char *eof_str, size_t mc, char *buf)
405#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION 407#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION
406#define OPT_INTERACTIVE (1<<5) 408#define OPT_INTERACTIVE (1<<5)
407#else 409#else
408#define OPT_INTERACTIVE (0) /* require for algorithm &| */ 410#define OPT_INTERACTIVE (0) /* require for algorithm &| */
409#endif 411#endif
410#define OPT_TERMINATE (1<<(5+OPT_INC_P)) 412#define OPT_TERMINATE (1<<(5+OPT_INC_P))
411#define OPT_ZEROTERM (1<<(5+OPT_INC_P+OPT_INC_X)) 413#define OPT_ZEROTERM (1<<(5+OPT_INC_P+OPT_INC_X))
@@ -413,153 +415,154 @@ process0_stdin (xlist_t *list_arg, const char *eof_str, size_t mc, char *buf)
413#define OPT_NEXT_OTHER (1<<(5+OPT_INC_P+OPT_INC_X+OPT_INC_0)) 415#define OPT_NEXT_OTHER (1<<(5+OPT_INC_P+OPT_INC_X+OPT_INC_0))
414*/ 416*/
415 417
416int 418int xargs_main(int argc, char **argv)
417xargs_main (int argc, char **argv)
418{ 419{
419 char **args; 420 char **args;
420 int i, a, n; 421 int i, a, n;
421 xlist_t *list = NULL; 422 xlist_t *list = NULL;
422 xlist_t *cur; 423 xlist_t *cur;
423 int child_error = 0; 424 int child_error = 0;
424 char *max_args, *max_chars; 425 char *max_args, *max_chars;
425 int n_max_arg; 426 int n_max_arg;
426 size_t n_chars = 0; 427 size_t n_chars = 0;
427 long orig_arg_max; 428 long orig_arg_max;
428 const char *eof_str = "_"; 429 const char *eof_str = "_";
429 unsigned long opt; 430 unsigned long opt;
430 size_t n_max_chars; 431 size_t n_max_chars;
432
431#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM 433#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM
432 xlist_t * (*read_args) (xlist_t *, const char *, size_t, char *) = process_stdin; 434 xlist_t *(*read_args) (xlist_t *, const char *, size_t, char *) =
435 process_stdin;
433#endif 436#endif
434 437
435#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION 438#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION
436 bb_opt_complementaly = "pt"; 439 bb_opt_complementaly = "pt";
437#endif 440#endif
438 441
439 opt = bb_getopt_ulflags (argc, argv, "+trn:s:e::" 442 opt = bb_getopt_ulflags(argc, argv, "+trn:s:e::"
440#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION 443#ifdef CONFIG_FEATURE_XARGS_SUPPORT_CONFIRMATION
441 "p" 444 "p"
442#endif 445#endif
443#ifdef CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT 446#ifdef CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT
444 "x" 447 "x"
445#endif 448#endif
446#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM 449#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM
447 "0" 450 "0"
448#endif 451#endif
449 , &max_args, &max_chars, &eof_str); 452 , &max_args, &max_chars, &eof_str);
450 453
451 a = argc - optind; 454 a = argc - optind;
452 argv += optind; 455 argv += optind;
453 if (a == 0) { 456 if (a == 0) {
454 /* default behavior is to echo all the filenames */ 457 /* default behavior is to echo all the filenames */
455 *argv = "echo"; 458 *argv = "echo";
456 a++; 459 a++;
457 } 460 }
458 461
459 orig_arg_max = ARG_MAX; 462 orig_arg_max = ARG_MAX;
460 if (orig_arg_max == -1) 463 if (orig_arg_max == -1)
461 orig_arg_max = LONG_MAX; 464 orig_arg_max = LONG_MAX;
462 orig_arg_max -= 2048; /* POSIX.2 requires subtracting 2048. */ 465 orig_arg_max -= 2048; /* POSIX.2 requires subtracting 2048. */
463 if ((opt & OPT_UPTO_SIZE)) { 466 if ((opt & OPT_UPTO_SIZE)) {
464 n_max_chars = bb_xgetularg10_bnd (max_chars, 1, orig_arg_max); 467 n_max_chars = bb_xgetularg10_bnd(max_chars, 1, orig_arg_max);
465 for (i = 0; i < a; i++) { 468 for (i = 0; i < a; i++) {
466 n_chars += strlen (*argv) + 1; 469 n_chars += strlen(*argv) + 1;
470 }
471 if (n_max_chars < n_chars) {
472 bb_error_msg_and_die
473 ("can not fit single argument within argument list size limit");
474 }
475 n_max_chars -= n_chars;
476 } else {
477 /* Sanity check for systems with huge ARG_MAX defines (e.g., Suns which
478 have it at 1 meg). Things will work fine with a large ARG_MAX but it
479 will probably hurt the system more than it needs to; an array of this
480 size is allocated. */
481 if (orig_arg_max > 20 * 1024)
482 orig_arg_max = 20 * 1024;
483 n_max_chars = orig_arg_max;
467 } 484 }
468 if (n_max_chars < n_chars) { 485 max_chars = xmalloc(n_max_chars);
469 bb_error_msg_and_die 486
470 ("can not fit single argument within argument list size limit"); 487 if ((opt & OPT_UPTO_NUMBER)) {
488 n_max_arg = bb_xgetularg10_bnd(max_args, 1, INT_MAX);
489 } else {
490 n_max_arg = n_max_chars;
471 } 491 }
472 n_max_chars -= n_chars;
473 } else {
474 /* Sanity check for systems with huge ARG_MAX defines (e.g., Suns which
475 have it at 1 meg). Things will work fine with a large ARG_MAX but it
476 will probably hurt the system more than it needs to; an array of this
477 size is allocated. */
478 if (orig_arg_max > 20 * 1024)
479 orig_arg_max = 20 * 1024;
480 n_max_chars = orig_arg_max;
481 }
482 max_chars = xmalloc(n_max_chars);
483
484 if ((opt & OPT_UPTO_NUMBER)) {
485 n_max_arg = bb_xgetularg10_bnd (max_args, 1, INT_MAX);
486 } else {
487 n_max_arg = n_max_chars;
488 }
489 492
490#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM 493#ifdef CONFIG_FEATURE_XARGS_SUPPORT_ZERO_TERM
491 if(opt & OPT_ZEROTERM) 494 if (opt & OPT_ZEROTERM)
492 read_args = process0_stdin; 495 read_args = process0_stdin;
493#endif 496#endif
494 497
495 while ((list = READ_ARGS(list, eof_str, n_max_chars, max_chars)) != NULL 498 while ((list = READ_ARGS(list, eof_str, n_max_chars, max_chars)) != NULL
496 || (opt & OPT_NO_EMPTY) == 0) { 499 || (opt & OPT_NO_EMPTY) == 0) {
497 opt |= OPT_NO_EMPTY; 500 opt |= OPT_NO_EMPTY;
498 n = 0; 501 n = 0;
499 n_chars = 0; 502 n_chars = 0;
500#ifdef CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT 503#ifdef CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT
501 for (cur = list; cur; ) { 504 for (cur = list; cur;) {
502 n_chars += cur->lenght; 505 n_chars += cur->lenght;
503 n++; 506 n++;
504 cur = cur->link; 507 cur = cur->link;
505 if (n_chars > n_max_chars || (n == n_max_arg && cur)) { 508 if (n_chars > n_max_chars || (n == n_max_arg && cur)) {
506 if (opt & OPT_TERMINATE) 509 if (opt & OPT_TERMINATE)
507 bb_error_msg_and_die ("argument list too long"); 510 bb_error_msg_and_die("argument list too long");
508 break; 511 break;
509 } 512 }
510 } 513 }
511#else 514#else
512 for (cur = list; cur; cur = cur->link) { 515 for (cur = list; cur; cur = cur->link) {
513 n_chars += cur->lenght; 516 n_chars += cur->lenght;
514 n++; 517 n++;
515 if (n_chars > n_max_chars || n == n_max_arg) { 518 if (n_chars > n_max_chars || n == n_max_arg) {
516 break; 519 break;
517 } 520 }
518 } 521 }
519#endif /* CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT */ 522#endif /* CONFIG_FEATURE_XARGS_SUPPORT_TERMOPT */
520 523
521 /* allocating pointers for execvp: 524 /* allocating pointers for execvp:
522 a*arg, n*arg from stdin, NULL */ 525 a*arg, n*arg from stdin, NULL */
523 args = xcalloc (n + a + 1, sizeof (char *)); 526 args = xcalloc(n + a + 1, sizeof(char *));
524 527
525 /* Store the command to be executed 528 /* Store the command to be executed
526 (taken from the command line) */ 529 (taken from the command line) */
527 for (i = 0; i < a; i++) 530 for (i = 0; i < a; i++)
528 args[i] = argv[i]; 531 args[i] = argv[i];
529 /* (taken from stdin) */ 532 /* (taken from stdin) */
530 for (cur = list; n; cur = cur->link) { 533 for (cur = list; n; cur = cur->link) {
531 args[i++] = cur->data; 534 args[i++] = cur->data;
532 n--; 535 n--;
533 } 536 }
534 537
535 if ((opt & (OPT_INTERACTIVE|OPT_VERBOSE))) { 538 if ((opt & (OPT_INTERACTIVE | OPT_VERBOSE))) {
536 for (i = 0; args[i]; i++) { 539 for (i = 0; args[i]; i++) {
537 if (i) 540 if (i)
538 fputc (' ', stderr); 541 fputc(' ', stderr);
539 fputs (args[i], stderr); 542 fputs(args[i], stderr);
543 }
544 if ((opt & OPT_INTERACTIVE) == 0)
545 fputc('\n', stderr);
546 }
547 if ((opt & OPT_INTERACTIVE) == 0 || xargs_ask_confirmation() != 0) {
548 child_error = xargs_exec(args);
540 } 549 }
541 if((opt & OPT_INTERACTIVE) == 0)
542 fputc ('\n', stderr);
543 }
544 if ((opt & OPT_INTERACTIVE) == 0 || xargs_ask_confirmation () != 0) {
545 child_error = xargs_exec (args);
546 }
547 550
548 /* clean up */ 551 /* clean up */
549 for (i = a; args[i]; i++) { 552 for (i = a; args[i]; i++) {
550 cur = list; 553 cur = list;
551 list = list->link; 554 list = list->link;
552 free (cur); 555 free(cur);
553 } 556 }
554 free (args); 557 free(args);
555 if (child_error > 0 && child_error != 123) { 558 if (child_error > 0 && child_error != 123) {
556 break; 559 break;
560 }
557 } 561 }
558 }
559#ifdef CONFIG_FEATURE_CLEAN_UP 562#ifdef CONFIG_FEATURE_CLEAN_UP
560 free(max_chars); 563 free(max_chars);
561#endif 564#endif
562 return child_error; 565 return child_error;
563} 566}
564 567
565 568
@@ -569,12 +572,14 @@ const char *bb_applet_name = "debug stuff usage";
569 572
570void bb_show_usage(void) 573void bb_show_usage(void)
571{ 574{
572 fprintf(stderr, "Usage: %s [-p] [-r] [-t] -[x] [-n max_arg] [-s max_chars]\n", bb_applet_name); 575 fprintf(stderr,
573 exit(1); 576 "Usage: %s [-p] [-r] [-t] -[x] [-n max_arg] [-s max_chars]\n",
577 bb_applet_name);
578 exit(1);
574} 579}
575 580
576int main(int argc, char **argv) 581int main(int argc, char **argv)
577{ 582{
578 return xargs_main(argc, argv); 583 return xargs_main(argc, argv);
579} 584}
580#endif /* TEST */ 585#endif /* TEST */
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2026-02-09 10:30:57 +0000