add open_read_close() and similar stuff

1 files changed, 2 insertions, 5 deletions

diff --git a/networking/udhcp/clientpacket.c b/networking/udhcp/clientpacket.c
index f9f5a3b8c..439aa0250 100644
--- a/networking/udhcp/clientpacket.c
+++ b/networking/udhcp/clientpacket.c
@@ -39,16 +39,13 @@ unsigned long random_xid(void)
 {
         static int initialized;
         if (!initialized) {
-                int fd;
                 unsigned long seed;
 
-                fd = open("/dev/urandom", 0);
-                if (fd < 0 || read(fd, &seed, sizeof(seed)) < 0) {
-                        bb_info_msg("Could not load seed "
+                if (open_read_close("/dev/urandom", &seed, sizeof(seed)) < 0) {
+                        bb_info_msg("Cannot load seed "
                                 "from /dev/urandom: %s", strerror(errno));
                         seed = time(0);
                 }
-                if (fd >= 0) close(fd);
                 srand(seed);
                 initialized++;
         }