12 #include "pthread_impl.h"
14 static void reap(pid_t pid)
18 if (waitpid(pid, &status, 0) < 0) {
19 if (errno != EINTR) return;
21 if (WIFEXITED(status)) return;
26 static char *getword(FILE *f)
29 return getdelim(&s, (size_t [1]){0}, 0, f) < 0 ? 0 : s;
32 static int do_wordexp(const char *s, wordexp_t *we, int flags)
38 char *redir = (flags & WRDE_SHOWERR) ? "" : "2>/dev/null";
47 if (flags & WRDE_REUSE) wordfree(we);
49 if (flags & WRDE_NOCMD) for (i=0; s[i]; i++) switch (s[i]) {
77 if (!(sq|dq|np)) return WRDE_BADCHAR;
81 if (s[i+1]=='(' && s[i+2]=='(') {
85 } else if (s[i+1] != '(') break;
91 if (flags & WRDE_APPEND) {
97 if (flags & WRDE_DOOFFS) {
98 if (we->we_offs > SIZE_MAX/sizeof(void *)/4)
105 if (pipe2(p, O_CLOEXEC) < 0) goto nospace;
106 __block_all_sigs(&set);
108 __restore_sigs(&set);
115 if (p[1] == 1) fcntl(1, F_SETFD, 0);
117 execl("/bin/sh", "sh", "-c",
118 "eval \"printf %s\\\\\\\\0 x $1 $2\"",
119 "sh", s, redir, (char *)0);
124 f = fdopen(p[0], "r");
141 while ((w = getword(f))) {
144 tmp = realloc(wv, l*sizeof(char *));
151 if (!feof(f)) err = WRDE_NOSPACE;
156 if (!wv) wv = calloc(i+1, sizeof *wv);
161 if (flags & WRDE_DOOFFS) {
162 if (wv) for (i=we->we_offs; i; i--)
163 we->we_wordv[i-1] = 0;
164 we->we_wordc -= we->we_offs;
169 if (!(flags & WRDE_APPEND)) {
176 int wordexp(const char *restrict s, wordexp_t *restrict we, int flags)
179 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
180 r = do_wordexp(s, we, flags);
181 pthread_setcancelstate(cs, 0);
185 void wordfree(wordexp_t *we)
188 if (!we->we_wordv) return;
189 for (i=0; i<we->we_wordc; i++) free(we->we_wordv[we->we_offs+i]);