+/* vi: set sw=4 ts=4: */
/*
* Mini xargs implementation for busybox
- * Only "-prt" options are supported in this version of xargs.
+ * Options are supported: "-prtx -n max_arg -s max_chars -e[ouf_str]"
*
- * (C) 2002 by Vladimir Oleynik <dzo@simtreas.ru>
- * (C) 2003 by Glenn McGrath <bug1@optushome.com.au>
+ * (C) 2002,2003 by Vladimir Oleynik <dzo@simtreas.ru>
*
- * Special thanks Mark Whitley for stimul to rewrote :)
+ * Special thanks
+ * - Mark Whitley and Glenn McGrath for stimulus to rewrite :)
+ * - Mike Rendell <michael@cs.mun.ca>
+ * and David MacKenzie <djm@gnu.ai.mit.edu>.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
+ * xargs is described in the Single Unix Specification v3 at
+ * http://www.opengroup.org/onlinepubs/007904975/utilities/xargs.html
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- *
- * Reference:
- * http://www.opengroup.org/onlinepubs/007904975/utilities/xargs.html
- *
- *
- * BUGS:
- * - E option doesnt allow spaces before argument
- * - exit value of isnt correct
- * - doesnt print quoted string properly
*/
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/wait.h>
+#include "libbb.h"
+
+/* This is a NOEXEC applet. Be very careful! */
+
+
+/* COMPAT: SYSV version defaults size (and has a max value of) to 470.
+ We try to make it as large as possible. */
+#if !defined(ARG_MAX) && defined(_SC_ARG_MAX)
+#define ARG_MAX sysconf (_SC_ARG_MAX)
+#endif
+#ifndef ARG_MAX
+#define ARG_MAX 470
+#endif
-#include "busybox.h"
+
+#ifdef TEST
+# ifndef ENABLE_FEATURE_XARGS_SUPPORT_CONFIRMATION
+# define ENABLE_FEATURE_XARGS_SUPPORT_CONFIRMATION 1
+# endif
+# ifndef ENABLE_FEATURE_XARGS_SUPPORT_QUOTES
+# define ENABLE_FEATURE_XARGS_SUPPORT_QUOTES 1
+# endif
+# ifndef ENABLE_FEATURE_XARGS_SUPPORT_TERMOPT
+# define ENABLE_FEATURE_XARGS_SUPPORT_TERMOPT 1
+# endif
+# ifndef ENABLE_FEATURE_XARGS_SUPPORT_ZERO_TERM
+# define ENABLE_FEATURE_XARGS_SUPPORT_ZERO_TERM 1
+# endif
+#endif
/*
- This function have special algorithm.
- Don`t use fork and include to main!
+ This function has special algorithm.
+ Don't use fork and include to main!
*/
static int xargs_exec(char **args)
{
- pid_t p;
- volatile int exec_errno; /* shared vfork stack */
-
- exec_errno = 0;
- p = vfork();
- if (p < 0) {
- bb_perror_msg_and_die("vfork");
- } else if (p == 0) {
- /* vfork -- child */
- execvp(args[0], args);
- exec_errno = errno; /* set error to shared stack */
- _exit(1);
- } else {
- /* vfork -- parent */
- int status;
+ int status;
- while (wait(&status) == (pid_t) - 1) {
- if (errno != EINTR) {
- break;
+ status = spawn_and_wait(args);
+ if (status < 0) {
+ bb_simple_perror_msg(args[0]);
+ return errno == ENOENT ? 127 : 126;
+ }
+ if (status == 255) {
+ bb_error_msg("%s: exited with status 255; aborting", args[0]);
+ return 124;
+ }
+/* Huh? I think we won't see this, ever. We don't wait with WUNTRACED!
+ if (WIFSTOPPED(status)) {
+ bb_error_msg("%s: stopped by signal %d",
+ args[0], WSTOPSIG(status));
+ return 125;
+ }
+*/
+ if (status >= 1000) {
+ bb_error_msg("%s: terminated by signal %d",
+ args[0], status - 1000);
+ return 125;
+ }
+ if (status)
+ return 123;
+ return 0;
+}
+
+
+typedef struct xlist_t {
+ struct xlist_t *link;
+ size_t length;
+ char xstr[1];
+} xlist_t;
+
+static smallint eof_stdin_detected;
+
+#define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+#define ISSPACE(c) (ISBLANK(c) || (c) == '\n' || (c) == '\r' \
+ || (c) == '\f' || (c) == '\v')
+
+#if ENABLE_FEATURE_XARGS_SUPPORT_QUOTES
+static xlist_t *process_stdin(xlist_t *list_arg,
+ const char *eof_str, size_t mc, char *buf)
+{
+#define NORM 0
+#define QUOTE 1
+#define BACKSLASH 2
+#define SPACE 4
+
+ char *s = NULL; /* start word */
+ char *p = NULL; /* pointer to end word */
+ char q = '\0'; /* quote char */
+ char state = NORM;
+ char eof_str_detected = 0;
+ size_t line_l = 0; /* size loaded args line */
+ int c; /* current char */
+ xlist_t *cur;
+ xlist_t *prev;
+
+ prev = cur = list_arg;
+ while (1) {
+ if (!cur) break;
+ prev = cur;
+ line_l += cur->length;
+ cur = cur->link;
+ }
+
+ while (!eof_stdin_detected) {
+ c = getchar();
+ if (c == EOF) {
+ eof_stdin_detected = 1;
+ if (s)
+ goto unexpected_eof;
+ break;
+ }
+ if (eof_str_detected)
+ continue;
+ if (state == BACKSLASH) {
+ state = NORM;
+ goto set;
+ } else if (state == QUOTE) {
+ if (c != q)
+ goto set;
+ q = '\0';
+ state = NORM;
+ } else { /* if (state == NORM) */
+ if (ISSPACE(c)) {
+ if (s) {
+ unexpected_eof:
+ state = SPACE;
+ c = '\0';
+ goto set;
+ }
+ } else {
+ if (s == NULL)
+ s = p = buf;
+ if (c == '\\') {
+ state = BACKSLASH;
+ } else if (c == '\'' || c == '"') {
+ q = c;
+ state = QUOTE;
+ } else {
+ set:
+ if ((size_t)(p - buf) >= mc)
+ bb_error_msg_and_die("argument line too long");
+ *p++ = c;
+ }
+ }
+ }
+ if (state == SPACE) { /* word's delimiter or EOF detected */
+ if (q) {
+ bb_error_msg_and_die("unmatched %s quote",
+ q == '\'' ? "single" : "double");
+ }
+ /* word loaded */
+ if (eof_str) {
+ eof_str_detected = (strcmp(s, eof_str) == 0);
+ }
+ if (!eof_str_detected) {
+ size_t length = (p - buf);
+ /* Dont xzalloc - it can be quite big */
+ cur = xmalloc(offsetof(xlist_t, xstr) + length);
+ cur->link = NULL;
+ cur->length = length;
+ memcpy(cur->xstr, s, length);
+ if (prev == NULL) {
+ list_arg = cur;
+ } else {
+ prev->link = cur;
+ }
+ prev = cur;
+ line_l += length;
+ if (line_l > mc) {
+ /* stop memory usage :-) */
+ break;
+ }
}
+ s = NULL;
+ state = NORM;
}
+ }
+ return list_arg;
+}
+#else
+/* The variant does not support single quotes, double quotes or backslash */
+static xlist_t *process_stdin(xlist_t *list_arg,
+ const char *eof_str, size_t mc, char *buf)
+{
+
+ int c; /* current char */
+ char eof_str_detected = 0;
+ char *s = NULL; /* start word */
+ char *p = NULL; /* pointer to end word */
+ size_t line_l = 0; /* size loaded args line */
+ xlist_t *cur;
+ xlist_t *prev;
+
+ prev = cur = list_arg;
+ while (1) {
+ if (!cur) break;
+ prev = cur;
+ line_l += cur->length;
+ cur = cur->link;
+ }
- if (exec_errno) {
- errno = exec_errno;
- bb_perror_msg("%s", args[0]);
- return exec_errno == ENOENT ? 127 : 126;
- } else if (WEXITSTATUS(status) == 255) {
- bb_error_msg("%s: exited with status 255; aborting", args[0]);
- return 124;
- } else if (WIFSTOPPED(status)) {
- bb_error_msg("%s: stopped by signal %d", args[0],
- WSTOPSIG(status));
- return 125;
- } else if (WIFSIGNALED(status)) {
- bb_error_msg("%s: terminated by signal %d", args[0],
- WTERMSIG(status));
- return 125;
- } else if (WEXITSTATUS(status)) {
- return 123;
- } else {
- return 0;
+ while (!eof_stdin_detected) {
+ c = getchar();
+ if (c == EOF) {
+ eof_stdin_detected = 1;
+ }
+ if (eof_str_detected)
+ continue;
+ if (c == EOF || ISSPACE(c)) {
+ if (s == NULL)
+ continue;
+ c = EOF;
+ }
+ if (s == NULL)
+ s = p = buf;
+ if ((size_t)(p - buf) >= mc)
+ bb_error_msg_and_die("argument line too long");
+ *p++ = (c == EOF ? '\0' : c);
+ if (c == EOF) { /* word's delimiter or EOF detected */
+ /* word loaded */
+ if (eof_str) {
+ eof_str_detected = (strcmp(s, eof_str) == 0);
+ }
+ if (!eof_str_detected) {
+ size_t length = (p - buf);
+ /* Dont xzalloc - it can be quite big */
+ cur = xmalloc(offsetof(xlist_t, xstr) + length);
+ cur->link = NULL;
+ cur->length = length;
+ memcpy(cur->xstr, s, length);
+ if (prev == NULL) {
+ list_arg = cur;
+ } else {
+ prev->link = cur;
+ }
+ prev = cur;
+ line_l += length;
+ if (line_l > mc) {
+ /* stop memory usage :-) */
+ break;
+ }
+ s = NULL;
+ }
}
}
+ return list_arg;
}
+#endif /* FEATURE_XARGS_SUPPORT_QUOTES */
-#define OPT_VERBOSE 0x1
-#define OPT_TERMINATE 0x2
-#define OPT_UPTO_NUMBER 0x4
-#define OPT_UPTO_SIZE 0x8
-#define OPT_EOF_STRING 0x10
-int xargs_main(int argc, char **argv)
+#if ENABLE_FEATURE_XARGS_SUPPORT_CONFIRMATION
+/* Prompt the user for a response, and
+ if the user responds affirmatively, return true;
+ otherwise, return false. Uses "/dev/tty", not stdin. */
+static int xargs_ask_confirmation(void)
{
-#ifdef CONFIG_FEATURE_XARGS_FANCY
- char *s_max_args = NULL;
- char *s_line_size = NULL;
-#endif
- char *eof_string = "_";
- unsigned long flg;
+ FILE *tty_stream;
+ int c, savec;
- int line_size;
- unsigned int max_args = LINE_MAX;
-
- char *line_buffer = NULL;
- char *line_buffer_ptr_ptr;
- char *old_arg = NULL;
+ tty_stream = xfopen_for_read(CURRENT_TTY);
+ fputs(" ?...", stderr);
+ fflush(stderr);
+ c = savec = getc(tty_stream);
+ while (c != EOF && c != '\n')
+ c = getc(tty_stream);
+ fclose(tty_stream);
+ return (savec == 'y' || savec == 'Y');
+}
+#else
+# define xargs_ask_confirmation() 1
+#endif /* FEATURE_XARGS_SUPPORT_CONFIRMATION */
- char **args;
- char *args_entry_ptr;
+#if ENABLE_FEATURE_XARGS_SUPPORT_ZERO_TERM
+static xlist_t *process0_stdin(xlist_t *list_arg,
+ const char *eof_str UNUSED_PARAM, size_t mc, char *buf)
+{
+ int c; /* current char */
+ char *s = NULL; /* start word */
+ char *p = NULL; /* pointer to end word */
+ size_t line_l = 0; /* size loaded args line */
+ xlist_t *cur;
+ xlist_t *prev;
- int i;
- int a;
+ prev = cur = list_arg;
+ while (1) {
+ if (!cur) break;
+ prev = cur;
+ line_l += cur->length;
+ cur = cur->link;
+ }
-#if 0
- /* Default to maximum line length */
- if (LINE_MAX > ARG_MAX - 2048) {
- /* Minimum command line length */
- line_size = LINE_MAX;
- } else {
- /* Maximum command line length */
- line_size = ARG_MAX = 2048;
+ while (!eof_stdin_detected) {
+ c = getchar();
+ if (c == EOF) {
+ eof_stdin_detected = 1;
+ if (s == NULL)
+ break;
+ c = '\0';
+ }
+ if (s == NULL)
+ s = p = buf;
+ if ((size_t)(p - buf) >= mc)
+ bb_error_msg_and_die("argument line too long");
+ *p++ = c;
+ if (c == '\0') { /* word's delimiter or EOF detected */
+ /* word loaded */
+ size_t length = (p - buf);
+ /* Dont xzalloc - it can be quite big */
+ cur = xmalloc(offsetof(xlist_t, xstr) + length);
+ cur->link = NULL;
+ cur->length = length;
+ memcpy(cur->xstr, s, length);
+ if (prev == NULL) {
+ list_arg = cur;
+ } else {
+ prev->link = cur;
+ }
+ prev = cur;
+ line_l += length;
+ if (line_l > mc) {
+ /* stop memory usage :-) */
+ break;
+ }
+ s = NULL;
+ }
}
+ return list_arg;
+}
+#endif /* FEATURE_XARGS_SUPPORT_ZERO_TERM */
+
+/* Correct regardless of combination of CONFIG_xxx */
+enum {
+ OPTBIT_VERBOSE = 0,
+ OPTBIT_NO_EMPTY,
+ OPTBIT_UPTO_NUMBER,
+ OPTBIT_UPTO_SIZE,
+ OPTBIT_EOF_STRING,
+ OPTBIT_EOF_STRING1,
+ IF_FEATURE_XARGS_SUPPORT_CONFIRMATION(OPTBIT_INTERACTIVE,)
+ IF_FEATURE_XARGS_SUPPORT_TERMOPT( OPTBIT_TERMINATE ,)
+ IF_FEATURE_XARGS_SUPPORT_ZERO_TERM( OPTBIT_ZEROTERM ,)
+
+ OPT_VERBOSE = 1 << OPTBIT_VERBOSE ,
+ OPT_NO_EMPTY = 1 << OPTBIT_NO_EMPTY ,
+ OPT_UPTO_NUMBER = 1 << OPTBIT_UPTO_NUMBER,
+ OPT_UPTO_SIZE = 1 << OPTBIT_UPTO_SIZE ,
+ OPT_EOF_STRING = 1 << OPTBIT_EOF_STRING , /* GNU: -e[<param>] */
+ OPT_EOF_STRING1 = 1 << OPTBIT_EOF_STRING1, /* SUS: -E<param> */
+ OPT_INTERACTIVE = IF_FEATURE_XARGS_SUPPORT_CONFIRMATION((1 << OPTBIT_INTERACTIVE)) + 0,
+ OPT_TERMINATE = IF_FEATURE_XARGS_SUPPORT_TERMOPT( (1 << OPTBIT_TERMINATE )) + 0,
+ OPT_ZEROTERM = IF_FEATURE_XARGS_SUPPORT_ZERO_TERM( (1 << OPTBIT_ZEROTERM )) + 0,
+};
+#define OPTION_STR "+trn:s:e::E:" \
+ IF_FEATURE_XARGS_SUPPORT_CONFIRMATION("p") \
+ IF_FEATURE_XARGS_SUPPORT_TERMOPT( "x") \
+ IF_FEATURE_XARGS_SUPPORT_ZERO_TERM( "0")
+
+int xargs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int xargs_main(int argc, char **argv)
+{
+ char **args;
+ int i, n;
+ xlist_t *list = NULL;
+ xlist_t *cur;
+ int child_error = 0;
+ char *max_args, *max_chars;
+ int n_max_arg;
+ size_t n_chars = 0;
+ long orig_arg_max;
+ const char *eof_str = NULL;
+ unsigned opt;
+ size_t n_max_chars;
+#if ENABLE_FEATURE_XARGS_SUPPORT_ZERO_TERM
+ xlist_t* (*read_args)(xlist_t*, const char*, size_t, char*) = process_stdin;
#else
- line_size = LINE_MAX;
+#define read_args process_stdin
#endif
-
-#ifndef CONFIG_FEATURE_XARGS_FANCY
- flg = bb_getopt_ulflags(argc, argv, "+t");
-#else
- flg = bb_getopt_ulflags(argc, argv, "+txn:s:E::", &s_max_args, &s_line_size, &eof_string);
- if (s_line_size) {
- line_size = bb_xgetularg10_bnd(s_max_args, 1, line_size);
- }
- if (s_max_args) {
- max_args = bb_xgetularg10(s_max_args);
- }
-#endif
+ opt = getopt32(argv, OPTION_STR, &max_args, &max_chars, &eof_str, &eof_str);
+
+ /* -E ""? You may wonder why not just omit -E?
+ * This is used for portability:
+ * old xargs was using "_" as default for -E / -e */
+ if ((opt & OPT_EOF_STRING1) && eof_str[0] == '\0')
+ eof_str = NULL;
+
+ if (opt & OPT_ZEROTERM)
+ IF_FEATURE_XARGS_SUPPORT_ZERO_TERM(read_args = process0_stdin);
- a = argc - optind;
argv += optind;
- if (a == 0) {
+ argc -= optind;
+ if (!argc) {
/* default behavior is to echo all the filenames */
- *argv = "echo";
- a++;
+ *argv = (char*)"echo";
+ argc++;
}
- /* allocating pointers for execvp: a*arg, arg from stdin, NULL */
- args = xcalloc(a + 2, sizeof(char *));
- /* Store the command to be executed (taken from the command line) */
- for (i = 0; i < a; i++) {
- line_size -= strlen(*argv) + 1;
- args[i] = *argv++;
- }
- if (line_size < 1) {
- bb_error_msg_and_die("can not fit single argument within argument list size limit");
+ orig_arg_max = ARG_MAX;
+ if (orig_arg_max == -1)
+ orig_arg_max = LONG_MAX;
+ orig_arg_max -= 2048; /* POSIX.2 requires subtracting 2048 */
+
+ if (opt & OPT_UPTO_SIZE) {
+ n_max_chars = xatoul_range(max_chars, 1, orig_arg_max);
+ for (i = 0; i < argc; i++) {
+ n_chars += strlen(*argv) + 1;
+ }
+ if (n_max_chars < n_chars) {
+ bb_error_msg_and_die("cannot fit single argument within argument list size limit");
+ }
+ n_max_chars -= n_chars;
+ } else {
+ /* Sanity check for systems with huge ARG_MAX defines (e.g., Suns which
+ have it at 1 meg). Things will work fine with a large ARG_MAX but it
+ will probably hurt the system more than it needs to; an array of this
+ size is allocated. */
+ if (orig_arg_max > 20 * 1024)
+ orig_arg_max = 20 * 1024;
+ n_max_chars = orig_arg_max;
}
+ max_chars = xmalloc(n_max_chars);
- args[i] = xmalloc(line_size);
- args_entry_ptr = args[i];
-
- /* Now, read in one line at a time from stdin, and store this
- * line to be used later as an argument to the command */
- do {
- char *line_buffer_ptr = NULL;
- unsigned int arg_count = 0;
- unsigned int arg_size = 0;
-
- *args_entry_ptr = '\0';
-
- /* Get the required number of entries from stdin */
- do {
- /* (Re)fill the line buffer */
- if (line_buffer == NULL) {
- line_buffer = bb_get_chomped_line_from_file(stdin);
- if (line_buffer == NULL) {
- /* EOF, exit outer loop */
- break;
- }
- line_buffer_ptr =
- strtok_r(line_buffer, " \t", &line_buffer_ptr_ptr);
- } else {
- if (old_arg) {
- line_buffer_ptr = old_arg;
- old_arg = NULL;
- } else {
- line_buffer_ptr =
- strtok_r(NULL, " \t", &line_buffer_ptr_ptr);
- }
- }
- /* If no arguments left go back and get another line */
- if (line_buffer_ptr == NULL) {
- free(line_buffer);
- line_buffer = NULL;
- continue;
- }
+ if (opt & OPT_UPTO_NUMBER) {
+ n_max_arg = xatoul_range(max_args, 1, INT_MAX);
+ } else {
+ n_max_arg = n_max_chars;
+ }
-#ifdef CONFIG_FEATURE_XARGS_FANCY
- if (eof_string && (strcmp(line_buffer_ptr, eof_string) == 0)) {
-#else
- if (strcmp(line_buffer_ptr, eof_string) == 0) {
-#endif
- /* logical EOF, exit outer loop */
- line_buffer = NULL;
+ while ((list = read_args(list, eof_str, n_max_chars, max_chars)) != NULL ||
+ !(opt & OPT_NO_EMPTY))
+ {
+ opt |= OPT_NO_EMPTY;
+ n = 0;
+ n_chars = 0;
+#if ENABLE_FEATURE_XARGS_SUPPORT_TERMOPT
+ for (cur = list; cur;) {
+ n_chars += cur->length;
+ n++;
+ cur = cur->link;
+ if (n_chars > n_max_chars || (n == n_max_arg && cur)) {
+ if (opt & OPT_TERMINATE)
+ bb_error_msg_and_die("argument list too long");
break;
}
-
- /* Check the next argument will fit */
- arg_size += 1 + strlen(line_buffer_ptr);
- if (arg_size > line_size) {
- if ((arg_count == 0)
-#ifdef CONFIG_FEATURE_XARGS_FANCY
- || ((flg & OPT_TERMINATE) && (arg_count != max_args))) {
+ }
#else
- ) {
-#endif
- bb_error_msg_and_die("argument line too long");
- }
- old_arg = line_buffer_ptr;
+ for (cur = list; cur; cur = cur->link) {
+ n_chars += cur->length;
+ n++;
+ if (n_chars > n_max_chars || n == n_max_arg) {
break;
}
+ }
+#endif /* FEATURE_XARGS_SUPPORT_TERMOPT */
- /* Add the entry to our pre-allocated space */
- strcat(args_entry_ptr, line_buffer_ptr);
- strcat(args_entry_ptr, " ");
- arg_count++;
- } while (arg_count < max_args);
-
- /* Remove the last space */
- args_entry_ptr[arg_size - 1] = '\0';
-
- if (*args_entry_ptr != '\0') {
- if (flg & OPT_VERBOSE) {
- for (i = 0; args[i]; i++) {
- if (i) {
- fputc(' ', stderr);
- }
- fputs(args[i], stderr);
- }
- fputc('\n', stderr);
+ /* allocate pointers for execvp:
+ argc*arg, n*arg from stdin, NULL */
+ args = xzalloc((n + argc + 1) * sizeof(char *));
+
+ /* store the command to be executed
+ (taken from the command line) */
+ for (i = 0; i < argc; i++)
+ args[i] = argv[i];
+ /* (taken from stdin) */
+ for (cur = list; n; cur = cur->link) {
+ args[i++] = cur->xstr;
+ n--;
+ }
+
+ if (opt & (OPT_INTERACTIVE | OPT_VERBOSE)) {
+ for (i = 0; args[i]; i++) {
+ if (i)
+ fputc(' ', stderr);
+ fputs(args[i], stderr);
}
- xargs_exec(args);
+ if (!(opt & OPT_INTERACTIVE))
+ fputc('\n', stderr);
+ }
+ if (!(opt & OPT_INTERACTIVE) || xargs_ask_confirmation()) {
+ child_error = xargs_exec(args);
}
- } while (line_buffer);
-#ifdef CONFIG_FEATURE_CLEAN_UP
- free(args);
-#endif
- return 0;
+ /* clean up */
+ for (i = argc; args[i]; i++) {
+ cur = list;
+ list = list->link;
+ free(cur);
+ }
+ free(args);
+ if (child_error > 0 && child_error != 123) {
+ break;
+ }
+ } /* while */
+ if (ENABLE_FEATURE_CLEAN_UP)
+ free(max_chars);
+ return child_error;
+}
+
+
+#ifdef TEST
+
+const char *applet_name = "debug stuff usage";
+
+void bb_show_usage(void)
+{
+ fprintf(stderr, "Usage: %s [-p] [-r] [-t] -[x] [-n max_arg] [-s max_chars]\n",
+ applet_name);
+ exit(EXIT_FAILURE);
+}
+
+int main(int argc, char **argv)
+{
+ return xargs_main(argc, argv);
}
+#endif /* TEST */
projects / oweals / busybox.git / blobdiff