12 #include "pthread_impl.h"
14 static void reap(pid_t pid)
17 while (waitpid(pid, &status, 0) < 0 && errno == EINTR);
20 static char *getword(FILE *f)
23 return getdelim(&s, (size_t [1]){0}, 0, f) < 0 ? 0 : s;
26 static int do_wordexp(const char *s, wordexp_t *we, int flags)
32 char *redir = (flags & WRDE_SHOWERR) ? "" : "2>/dev/null";
41 if (flags & WRDE_REUSE) wordfree(we);
43 if (flags & WRDE_NOCMD) for (i=0; s[i]; i++) switch (s[i]) {
71 if (!(sq|dq|np)) return WRDE_BADCHAR;
75 if (s[i+1]=='(' && s[i+2]=='(') {
79 } else if (s[i+1] != '(') break;
85 if (flags & WRDE_APPEND) {
91 if (flags & WRDE_DOOFFS) {
92 if (we->we_offs > SIZE_MAX/sizeof(void *)/4)
99 if (pipe2(p, O_CLOEXEC) < 0) goto nospace;
100 __block_all_sigs(&set);
102 __restore_sigs(&set);
109 if (p[1] == 1) fcntl(1, F_SETFD, 0);
111 execl("/bin/sh", "sh", "-c",
112 "eval \"printf %s\\\\\\\\0 x $1 $2\"",
113 "sh", s, redir, (char *)0);
118 f = fdopen(p[0], "r");
135 while ((w = getword(f))) {
138 tmp = realloc(wv, l*sizeof(char *));
145 if (!feof(f)) err = WRDE_NOSPACE;
150 if (!wv) wv = calloc(i+1, sizeof *wv);
155 if (flags & WRDE_DOOFFS) {
156 if (wv) for (i=we->we_offs; i; i--)
157 we->we_wordv[i-1] = 0;
158 we->we_wordc -= we->we_offs;
163 if (!(flags & WRDE_APPEND)) {
170 int wordexp(const char *restrict s, wordexp_t *restrict we, int flags)
173 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
174 r = do_wordexp(s, we, flags);
175 pthread_setcancelstate(cs, 0);
179 void wordfree(wordexp_t *we)
182 if (!we->we_wordv) return;
183 for (i=0; i<we->we_wordc; i++) free(we->we_wordv[we->we_offs+i]);