1 files changed, 17 insertions, 16 deletions
diff --git a/networking/nc.c b/networking/nc.c
index d2b1ddcce..1b70434ac 100644
--- a/networking/nc.c
+++ b/networking/nc.c
@@ -117,7 +117,7 @@ int nc_main(int argc, char **argv)
        IF_NOT_NC_EXTRA (const) unsigned delay = 0;
        IF_NOT_NC_EXTRA (const int execparam = 0;)
        IF_NC_EXTRA     (char **execparam = NULL;)
-        struct pollfd pfds[2];
+        fd_set readfds, testfds;
        int opt; /* must be signed (getopt returns -1) */
        if (ENABLE_NC_SERVER || ENABLE_NC_EXTRA) {
@@ -235,28 +235,29 @@ int nc_main(int argc, char **argv)
                IF_NC_EXTRA(bb_perror_msg_and_die("can't execute '%s'", execparam[0]);)
        }
-        /* loop copying stdin to cfd, and cfd to stdout */
+        /* Select loop copying stdin to cfd, and cfd to stdout */
-        pfds[0].fd = STDIN_FILENO;
+        FD_ZERO(&readfds);
-        pfds[0].events = POLLIN;
+        FD_SET(cfd, &readfds);
-        pfds[1].fd = cfd;
+        FD_SET(STDIN_FILENO, &readfds);
-        pfds[1].events = POLLIN;
 #define iobuf bb_common_bufsiz1
        setup_common_bufsiz();
        for (;;) {
-                int fdidx;
+                int fd;
                int ofd;
                int nread;
-                if (safe_poll(pfds, 2, -1) < 0)
+                testfds = readfds;
-                        bb_perror_msg_and_die("poll");
-                fdidx = 0;
+                if (select(cfd + 1, &testfds, NULL, NULL, NULL) < 0)
+                        bb_perror_msg_and_die("select");
+                fd = STDIN_FILENO;
                while (1) {
-                        if (pfds[fdidx].revents) {
+                        if (FD_ISSET(fd, &testfds)) {
-                                nread = safe_read(pfds[fdidx].fd, iobuf, COMMON_BUFSIZE);
+                                nread = safe_read(fd, iobuf, COMMON_BUFSIZE);
-                                if (fdidx != 0) {
+                                if (fd == cfd) {
                                        if (nread < 1)
                                                exit(EXIT_SUCCESS);
                                        ofd = STDOUT_FILENO;
@@ -265,7 +266,7 @@ int nc_main(int argc, char **argv)
                                                /* Close outgoing half-connection so they get EOF,
                                                 * but leave incoming alone so we can see response */
                                                shutdown(cfd, SHUT_WR);
-                                                pfds[0].fd = -1;
+                                                FD_CLR(STDIN_FILENO, &readfds);
                                        }
                                        ofd = cfd;
                                }
@@ -273,9 +274,9 @@ int nc_main(int argc, char **argv)
                                if (delay > 0)
                                        sleep(delay);
                        }
-                        if (fdidx == 1)
+                        if (fd == cfd)
                                break;
-                        fdidx++;
+                        fd = cfd;
                }
        }
 }