1/*-
2 * Copyright (c) 2002 Tim J. Robbins.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include "namespace.h"
28#include <sys/cdefs.h>
29#include <sys/types.h>
30#include <sys/wait.h>
31#include <errno.h>
32#include <fcntl.h>
33#include <paths.h>
34#include <signal.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <string.h>
38#include <unistd.h>
39#include <wordexp.h>
40#include "un-namespace.h"
41
| 1/*-
2 * Copyright (c) 2002 Tim J. Robbins.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include "namespace.h"
28#include <sys/cdefs.h>
29#include <sys/types.h>
30#include <sys/wait.h>
31#include <errno.h>
32#include <fcntl.h>
33#include <paths.h>
34#include <signal.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <string.h>
38#include <unistd.h>
39#include <wordexp.h>
40#include "un-namespace.h"
41
|
42__FBSDID("$FreeBSD: head/lib/libc/gen/wordexp.c 253581 2013-07-23 21:09:26Z jilles $");
| 42__FBSDID("$FreeBSD: head/lib/libc/gen/wordexp.c 254977 2013-08-27 21:47:01Z jilles $");
|
43
44static int we_askshell(const char *, wordexp_t *, int);
45static int we_check(const char *, int);
46
47/*
48 * wordexp --
49 * Perform shell word expansion on `words' and place the resulting list
50 * of words in `we'. See wordexp(3).
51 *
52 * Specified by IEEE Std. 1003.1-2001.
53 */
54int
55wordexp(const char * __restrict words, wordexp_t * __restrict we, int flags)
56{
57 int error;
58
59 if (flags & WRDE_REUSE)
60 wordfree(we);
61 if ((flags & WRDE_APPEND) == 0) {
62 we->we_wordc = 0;
63 we->we_wordv = NULL;
64 we->we_strings = NULL;
65 we->we_nbytes = 0;
66 }
67 if ((error = we_check(words, flags)) != 0) {
68 wordfree(we);
69 return (error);
70 }
71 if ((error = we_askshell(words, we, flags)) != 0) {
72 wordfree(we);
73 return (error);
74 }
75 return (0);
76}
77
78static size_t
79we_read_fully(int fd, char *buffer, size_t len)
80{
81 size_t done;
82 ssize_t nread;
83
84 done = 0;
85 do {
86 nread = _read(fd, buffer + done, len - done);
87 if (nread == -1 && errno == EINTR)
88 continue;
89 if (nread <= 0)
90 break;
91 done += nread;
92 } while (done != len);
93 return done;
94}
95
96/*
97 * we_askshell --
98 * Use the `wordexp' /bin/sh builtin function to do most of the work
99 * in expanding the word string. This function is complicated by
100 * memory management.
101 */
102static int
103we_askshell(const char *words, wordexp_t *we, int flags)
104{
105 int pdes[2]; /* Pipe to child */
106 char bbuf[9]; /* Buffer for byte count */
107 char wbuf[9]; /* Buffer for word count */
108 long nwords, nbytes; /* Number of words, bytes from child */
109 long i; /* Handy integer */
110 size_t sofs; /* Offset into we->we_strings */
111 size_t vofs; /* Offset into we->we_wordv */
112 pid_t pid; /* Process ID of child */
113 pid_t wpid; /* waitpid return value */
114 int status; /* Child exit status */
115 int error; /* Our return value */
116 int serrno; /* errno to return */
117 char *np, *p; /* Handy pointers */
118 char *nstrings; /* Temporary for realloc() */
119 char **nwv; /* Temporary for realloc() */
120 sigset_t newsigblock, oldsigblock;
121
122 serrno = errno;
123
| 43
44static int we_askshell(const char *, wordexp_t *, int);
45static int we_check(const char *, int);
46
47/*
48 * wordexp --
49 * Perform shell word expansion on `words' and place the resulting list
50 * of words in `we'. See wordexp(3).
51 *
52 * Specified by IEEE Std. 1003.1-2001.
53 */
54int
55wordexp(const char * __restrict words, wordexp_t * __restrict we, int flags)
56{
57 int error;
58
59 if (flags & WRDE_REUSE)
60 wordfree(we);
61 if ((flags & WRDE_APPEND) == 0) {
62 we->we_wordc = 0;
63 we->we_wordv = NULL;
64 we->we_strings = NULL;
65 we->we_nbytes = 0;
66 }
67 if ((error = we_check(words, flags)) != 0) {
68 wordfree(we);
69 return (error);
70 }
71 if ((error = we_askshell(words, we, flags)) != 0) {
72 wordfree(we);
73 return (error);
74 }
75 return (0);
76}
77
78static size_t
79we_read_fully(int fd, char *buffer, size_t len)
80{
81 size_t done;
82 ssize_t nread;
83
84 done = 0;
85 do {
86 nread = _read(fd, buffer + done, len - done);
87 if (nread == -1 && errno == EINTR)
88 continue;
89 if (nread <= 0)
90 break;
91 done += nread;
92 } while (done != len);
93 return done;
94}
95
96/*
97 * we_askshell --
98 * Use the `wordexp' /bin/sh builtin function to do most of the work
99 * in expanding the word string. This function is complicated by
100 * memory management.
101 */
102static int
103we_askshell(const char *words, wordexp_t *we, int flags)
104{
105 int pdes[2]; /* Pipe to child */
106 char bbuf[9]; /* Buffer for byte count */
107 char wbuf[9]; /* Buffer for word count */
108 long nwords, nbytes; /* Number of words, bytes from child */
109 long i; /* Handy integer */
110 size_t sofs; /* Offset into we->we_strings */
111 size_t vofs; /* Offset into we->we_wordv */
112 pid_t pid; /* Process ID of child */
113 pid_t wpid; /* waitpid return value */
114 int status; /* Child exit status */
115 int error; /* Our return value */
116 int serrno; /* errno to return */
117 char *np, *p; /* Handy pointers */
118 char *nstrings; /* Temporary for realloc() */
119 char **nwv; /* Temporary for realloc() */
120 sigset_t newsigblock, oldsigblock;
121
122 serrno = errno;
123
|
124 if (pipe(pdes) < 0)
| 124 if (pipe2(pdes, O_CLOEXEC) < 0)
|
125 return (WRDE_NOSPACE); /* XXX */
126 (void)sigemptyset(&newsigblock);
127 (void)sigaddset(&newsigblock, SIGCHLD);
128 (void)_sigprocmask(SIG_BLOCK, &newsigblock, &oldsigblock);
129 if ((pid = fork()) < 0) {
130 serrno = errno;
131 _close(pdes[0]);
132 _close(pdes[1]);
133 (void)_sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
134 errno = serrno;
135 return (WRDE_NOSPACE); /* XXX */
136 }
137 else if (pid == 0) {
138 /*
139 * We are the child; just get /bin/sh to run the wordexp
140 * builtin on `words'.
141 */
142 (void)_sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
| 125 return (WRDE_NOSPACE); /* XXX */
126 (void)sigemptyset(&newsigblock);
127 (void)sigaddset(&newsigblock, SIGCHLD);
128 (void)_sigprocmask(SIG_BLOCK, &newsigblock, &oldsigblock);
129 if ((pid = fork()) < 0) {
130 serrno = errno;
131 _close(pdes[0]);
132 _close(pdes[1]);
133 (void)_sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
134 errno = serrno;
135 return (WRDE_NOSPACE); /* XXX */
136 }
137 else if (pid == 0) {
138 /*
139 * We are the child; just get /bin/sh to run the wordexp
140 * builtin on `words'.
141 */
142 (void)_sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
|
143 _close(pdes[0]);
144 if (_dup2(pdes[1], STDOUT_FILENO) < 0)
| 143 if ((pdes[1] != STDOUT_FILENO ?
144 _dup2(pdes[1], STDOUT_FILENO) :
145 _fcntl(pdes[1], F_SETFD, 0)) < 0)
|
145 _exit(1);
| 146 _exit(1);
|
146 _close(pdes[1]);
| |
147 execl(_PATH_BSHELL, "sh", flags & WRDE_UNDEF ? "-u" : "+u",
148 "-c", "eval \"$1\";eval \"wordexp $2\"", "",
149 flags & WRDE_SHOWERR ? "" : "exec 2>/dev/null", words,
150 (char *)NULL);
151 _exit(1);
152 }
153
154 /*
155 * We are the parent; read the output of the shell wordexp function,
156 * which is a 32-bit hexadecimal word count, a 32-bit hexadecimal
157 * byte count (not including terminating null bytes), followed by
158 * the expanded words separated by nulls.
159 */
160 _close(pdes[1]);
161 if (we_read_fully(pdes[0], wbuf, 8) != 8 ||
162 we_read_fully(pdes[0], bbuf, 8) != 8) {
163 error = flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX;
164 serrno = errno;
165 goto cleanup;
166 }
167 wbuf[8] = bbuf[8] = '\0';
168 nwords = strtol(wbuf, NULL, 16);
169 nbytes = strtol(bbuf, NULL, 16) + nwords;
170
171 /*
172 * Allocate or reallocate (when flags & WRDE_APPEND) the word vector
173 * and string storage buffers for the expanded words we're about to
174 * read from the child.
175 */
176 sofs = we->we_nbytes;
177 vofs = we->we_wordc;
178 if ((flags & (WRDE_DOOFFS|WRDE_APPEND)) == (WRDE_DOOFFS|WRDE_APPEND))
179 vofs += we->we_offs;
180 we->we_wordc += nwords;
181 we->we_nbytes += nbytes;
182 if ((nwv = realloc(we->we_wordv, (we->we_wordc + 1 +
183 (flags & WRDE_DOOFFS ? we->we_offs : 0)) *
184 sizeof(char *))) == NULL) {
185 error = WRDE_NOSPACE;
186 goto cleanup;
187 }
188 we->we_wordv = nwv;
189 if ((nstrings = realloc(we->we_strings, we->we_nbytes)) == NULL) {
190 error = WRDE_NOSPACE;
191 goto cleanup;
192 }
193 for (i = 0; i < vofs; i++)
194 if (we->we_wordv[i] != NULL)
195 we->we_wordv[i] += nstrings - we->we_strings;
196 we->we_strings = nstrings;
197
198 if (we_read_fully(pdes[0], we->we_strings + sofs, nbytes) != nbytes) {
199 error = flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX;
200 serrno = errno;
201 goto cleanup;
202 }
203
204 error = 0;
205cleanup:
206 _close(pdes[0]);
207 do
208 wpid = _waitpid(pid, &status, 0);
209 while (wpid < 0 && errno == EINTR);
210 (void)_sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
211 if (error != 0) {
212 errno = serrno;
213 return (error);
214 }
215 if (wpid < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0)
216 return (flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX);
217
218 /*
219 * Break the null-terminated expanded word strings out into
220 * the vector.
221 */
222 if (vofs == 0 && flags & WRDE_DOOFFS)
223 while (vofs < we->we_offs)
224 we->we_wordv[vofs++] = NULL;
225 p = we->we_strings + sofs;
226 while (nwords-- != 0) {
227 we->we_wordv[vofs++] = p;
228 if ((np = memchr(p, '\0', nbytes)) == NULL)
229 return (WRDE_NOSPACE); /* XXX */
230 nbytes -= np - p + 1;
231 p = np + 1;
232 }
233 we->we_wordv[vofs] = NULL;
234
235 return (0);
236}
237
238/*
239 * we_check --
240 * Check that the string contains none of the following unquoted
241 * special characters: <newline> |&;<>(){}
242 * or command substitutions when WRDE_NOCMD is set in flags.
243 */
244static int
245we_check(const char *words, int flags)
246{
247 char c;
248 int dquote, level, quote, squote;
249
250 quote = squote = dquote = 0;
251 while ((c = *words++) != '\0') {
252 switch (c) {
253 case '\\':
254 if (squote == 0)
255 quote ^= 1;
256 continue;
257 case '\'':
258 if (quote + dquote == 0)
259 squote ^= 1;
260 break;
261 case '"':
262 if (quote + squote == 0)
263 dquote ^= 1;
264 break;
265 case '`':
266 if (quote + squote == 0 && flags & WRDE_NOCMD)
267 return (WRDE_CMDSUB);
268 while ((c = *words++) != '\0' && c != '`')
269 if (c == '\\' && (c = *words++) == '\0')
270 break;
271 if (c == '\0')
272 return (WRDE_SYNTAX);
273 break;
274 case '|': case '&': case ';': case '<': case '>':
275 case '{': case '}': case '(': case ')': case '\n':
276 if (quote + squote + dquote == 0)
277 return (WRDE_BADCHAR);
278 break;
279 case '$':
280 if ((c = *words++) == '\0')
281 break;
282 else if (quote + squote == 0 && c == '(') {
283 if (flags & WRDE_NOCMD && *words != '(')
284 return (WRDE_CMDSUB);
285 level = 1;
286 while ((c = *words++) != '\0') {
287 if (c == '\\') {
288 if ((c = *words++) == '\0')
289 break;
290 } else if (c == '(')
291 level++;
292 else if (c == ')' && --level == 0)
293 break;
294 }
295 if (c == '\0' || level != 0)
296 return (WRDE_SYNTAX);
297 } else if (quote + squote == 0 && c == '{') {
298 level = 1;
299 while ((c = *words++) != '\0') {
300 if (c == '\\') {
301 if ((c = *words++) == '\0')
302 break;
303 } else if (c == '{')
304 level++;
305 else if (c == '}' && --level == 0)
306 break;
307 }
308 if (c == '\0' || level != 0)
309 return (WRDE_SYNTAX);
310 } else
311 --words;
312 break;
313 default:
314 break;
315 }
316 quote = 0;
317 }
318 if (quote + squote + dquote != 0)
319 return (WRDE_SYNTAX);
320
321 return (0);
322}
323
324/*
325 * wordfree --
326 * Free the result of wordexp(). See wordexp(3).
327 *
328 * Specified by IEEE Std. 1003.1-2001.
329 */
330void
331wordfree(wordexp_t *we)
332{
333
334 if (we == NULL)
335 return;
336 free(we->we_wordv);
337 free(we->we_strings);
338 we->we_wordv = NULL;
339 we->we_strings = NULL;
340 we->we_nbytes = 0;
341 we->we_wordc = 0;
342}
| 147 execl(_PATH_BSHELL, "sh", flags & WRDE_UNDEF ? "-u" : "+u",
148 "-c", "eval \"$1\";eval \"wordexp $2\"", "",
149 flags & WRDE_SHOWERR ? "" : "exec 2>/dev/null", words,
150 (char *)NULL);
151 _exit(1);
152 }
153
154 /*
155 * We are the parent; read the output of the shell wordexp function,
156 * which is a 32-bit hexadecimal word count, a 32-bit hexadecimal
157 * byte count (not including terminating null bytes), followed by
158 * the expanded words separated by nulls.
159 */
160 _close(pdes[1]);
161 if (we_read_fully(pdes[0], wbuf, 8) != 8 ||
162 we_read_fully(pdes[0], bbuf, 8) != 8) {
163 error = flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX;
164 serrno = errno;
165 goto cleanup;
166 }
167 wbuf[8] = bbuf[8] = '\0';
168 nwords = strtol(wbuf, NULL, 16);
169 nbytes = strtol(bbuf, NULL, 16) + nwords;
170
171 /*
172 * Allocate or reallocate (when flags & WRDE_APPEND) the word vector
173 * and string storage buffers for the expanded words we're about to
174 * read from the child.
175 */
176 sofs = we->we_nbytes;
177 vofs = we->we_wordc;
178 if ((flags & (WRDE_DOOFFS|WRDE_APPEND)) == (WRDE_DOOFFS|WRDE_APPEND))
179 vofs += we->we_offs;
180 we->we_wordc += nwords;
181 we->we_nbytes += nbytes;
182 if ((nwv = realloc(we->we_wordv, (we->we_wordc + 1 +
183 (flags & WRDE_DOOFFS ? we->we_offs : 0)) *
184 sizeof(char *))) == NULL) {
185 error = WRDE_NOSPACE;
186 goto cleanup;
187 }
188 we->we_wordv = nwv;
189 if ((nstrings = realloc(we->we_strings, we->we_nbytes)) == NULL) {
190 error = WRDE_NOSPACE;
191 goto cleanup;
192 }
193 for (i = 0; i < vofs; i++)
194 if (we->we_wordv[i] != NULL)
195 we->we_wordv[i] += nstrings - we->we_strings;
196 we->we_strings = nstrings;
197
198 if (we_read_fully(pdes[0], we->we_strings + sofs, nbytes) != nbytes) {
199 error = flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX;
200 serrno = errno;
201 goto cleanup;
202 }
203
204 error = 0;
205cleanup:
206 _close(pdes[0]);
207 do
208 wpid = _waitpid(pid, &status, 0);
209 while (wpid < 0 && errno == EINTR);
210 (void)_sigprocmask(SIG_SETMASK, &oldsigblock, NULL);
211 if (error != 0) {
212 errno = serrno;
213 return (error);
214 }
215 if (wpid < 0 || !WIFEXITED(status) || WEXITSTATUS(status) != 0)
216 return (flags & WRDE_UNDEF ? WRDE_BADVAL : WRDE_SYNTAX);
217
218 /*
219 * Break the null-terminated expanded word strings out into
220 * the vector.
221 */
222 if (vofs == 0 && flags & WRDE_DOOFFS)
223 while (vofs < we->we_offs)
224 we->we_wordv[vofs++] = NULL;
225 p = we->we_strings + sofs;
226 while (nwords-- != 0) {
227 we->we_wordv[vofs++] = p;
228 if ((np = memchr(p, '\0', nbytes)) == NULL)
229 return (WRDE_NOSPACE); /* XXX */
230 nbytes -= np - p + 1;
231 p = np + 1;
232 }
233 we->we_wordv[vofs] = NULL;
234
235 return (0);
236}
237
238/*
239 * we_check --
240 * Check that the string contains none of the following unquoted
241 * special characters: <newline> |&;<>(){}
242 * or command substitutions when WRDE_NOCMD is set in flags.
243 */
244static int
245we_check(const char *words, int flags)
246{
247 char c;
248 int dquote, level, quote, squote;
249
250 quote = squote = dquote = 0;
251 while ((c = *words++) != '\0') {
252 switch (c) {
253 case '\\':
254 if (squote == 0)
255 quote ^= 1;
256 continue;
257 case '\'':
258 if (quote + dquote == 0)
259 squote ^= 1;
260 break;
261 case '"':
262 if (quote + squote == 0)
263 dquote ^= 1;
264 break;
265 case '`':
266 if (quote + squote == 0 && flags & WRDE_NOCMD)
267 return (WRDE_CMDSUB);
268 while ((c = *words++) != '\0' && c != '`')
269 if (c == '\\' && (c = *words++) == '\0')
270 break;
271 if (c == '\0')
272 return (WRDE_SYNTAX);
273 break;
274 case '|': case '&': case ';': case '<': case '>':
275 case '{': case '}': case '(': case ')': case '\n':
276 if (quote + squote + dquote == 0)
277 return (WRDE_BADCHAR);
278 break;
279 case '$':
280 if ((c = *words++) == '\0')
281 break;
282 else if (quote + squote == 0 && c == '(') {
283 if (flags & WRDE_NOCMD && *words != '(')
284 return (WRDE_CMDSUB);
285 level = 1;
286 while ((c = *words++) != '\0') {
287 if (c == '\\') {
288 if ((c = *words++) == '\0')
289 break;
290 } else if (c == '(')
291 level++;
292 else if (c == ')' && --level == 0)
293 break;
294 }
295 if (c == '\0' || level != 0)
296 return (WRDE_SYNTAX);
297 } else if (quote + squote == 0 && c == '{') {
298 level = 1;
299 while ((c = *words++) != '\0') {
300 if (c == '\\') {
301 if ((c = *words++) == '\0')
302 break;
303 } else if (c == '{')
304 level++;
305 else if (c == '}' && --level == 0)
306 break;
307 }
308 if (c == '\0' || level != 0)
309 return (WRDE_SYNTAX);
310 } else
311 --words;
312 break;
313 default:
314 break;
315 }
316 quote = 0;
317 }
318 if (quote + squote + dquote != 0)
319 return (WRDE_SYNTAX);
320
321 return (0);
322}
323
324/*
325 * wordfree --
326 * Free the result of wordexp(). See wordexp(3).
327 *
328 * Specified by IEEE Std. 1003.1-2001.
329 */
330void
331wordfree(wordexp_t *we)
332{
333
334 if (we == NULL)
335 return;
336 free(we->we_wordv);
337 free(we->we_strings);
338 we->we_wordv = NULL;
339 we->we_strings = NULL;
340 we->we_nbytes = 0;
341 we->we_wordc = 0;
342}
|