Use dup2() rather than fcntl()
diff --git a/ash/redir.c b/ash/redir.c
index e04f553..46b85ba 100644
--- a/ash/redir.c
+++ b/ash/redir.c
@@ -329,34 +329,12 @@
int
copyfd(from, to) {
-#ifdef F_DUPFD
int newfd;
- newfd = fcntl(from, F_DUPFD, to);
+ newfd = dup2(from, to);
if (newfd < 0 && errno == EMFILE)
return EMPTY;
return newfd;
-#else
- char toclose[32];
- int i;
- int newfd;
- int e;
-
- for (i = 0 ; i < to ; i++)
- toclose[i] = 0;
- INTOFF;
- while ((newfd = dup(from)) >= 0 && newfd < to)
- toclose[newfd] = 1;
- e = errno;
- for (i = 0 ; i < to ; i++) {
- if (toclose[i])
- close(i);
- }
- INTON;
- if (newfd < 0 && e == EMFILE)
- return EMPTY;
- return newfd;
-#endif
}
/* Return true if fd 0 has already been redirected at least once. */
