X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fmisc%2Fwordexp.c;h=617706e50d99c18f10eb9a85d836f6100abe63bc;hp=171f27027f6670bd735559948e1c1aef098cb167;hb=507faa63cb12571c14d66eb37dedbe6adbbf40a8;hpb=f0fc95d439459bac27d0d26ec151700a1579b028

diff --git a/src/misc/wordexp.c b/src/misc/wordexp.c
index 171f2702..617706e5 100644
--- a/src/misc/wordexp.c
+++ b/src/misc/wordexp.c
@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <sys/wait.h>
 #include <signal.h>
+#include <pthread.h>
 
 static char *getword(FILE *f)
 {
@@ -14,7 +15,7 @@ static char *getword(FILE *f)
 	return getdelim(&s, (size_t [1]){0}, 0, f) < 0 ? 0 : s;
 }
 
-int wordexp(const char *s, wordexp_t *we, int flags)
+static int do_wordexp(const char *s, wordexp_t *we, int flags)
 {
 	size_t i, l;
 	int sq=0, dq=0;
@@ -81,10 +82,17 @@ int wordexp(const char *s, wordexp_t *we, int flags)
 		if (we->we_offs > SIZE_MAX/sizeof(void *)/4)
 			return WRDE_NOSPACE;
 		i += we->we_offs;
+	} else {
+		we->we_offs = 0;
 	}
 
-	pipe(p);
+	if (pipe(p) < 0) return WRDE_NOSPACE;
 	pid = fork();
+	if (pid < 0) {
+		close(p[0]);
+		close(p[1]);
+		return WRDE_NOSPACE;
+	}
 	if (!pid) {
 		dup2(p[1], 1);
 		close(p[0]);
@@ -130,10 +138,24 @@ int wordexp(const char *s, wordexp_t *we, int flags)
 	}
 
 	we->we_wordv = wv;
-	we->we_wordc = i - we->we_offs;
+	we->we_wordc = i;
+
+	for (i=we->we_offs; i; i--)
+		we->we_wordv[i-1] = 0;
+
+	if (flags & WRDE_DOOFFS) we->we_wordc -= we->we_offs;
 	return err;
 }
 
+int wordexp(const char *restrict s, wordexp_t *restrict we, int flags)
+{
+	int r, cs;
+	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
+	r = do_wordexp(s, we, flags);
+	pthread_setcancelstate(cs, 0);
+	return r;
+}
+
 void wordfree(wordexp_t *we)
 {
 	size_t i;