ifenslave: small shrink

   text    data     bss     dec     hex filename
 809731     624    7060  817415   c7907 busybox_old
 809629     624    7060  817313   c78a1 busybox_unstripped

1 files changed, 24 insertions, 29 deletions

diff --git a/networking/ifenslave.c b/networking/ifenslave.c
index 1e983f2ba..fed186967 100644
--- a/networking/ifenslave.c
+++ b/networking/ifenslave.c
@@ -261,9 +261,7 @@ static void change_active(char *master_ifname, char *slave_ifname)
         struct ifreq ifr;
 
         if (!(slave.flags.ifr_flags & IFF_SLAVE)) {
-                bb_error_msg_and_die(
-                        "%s is not a slave",
-                        slave_ifname);
+                bb_error_msg_and_die("%s is not a slave", slave_ifname);
         }
 
         strncpy_IFNAMSIZ(ifr.ifr_slave, slave_ifname);
@@ -402,8 +400,7 @@ static int release(char *master_ifname, char *slave_ifname)
         int res = 0;
 
         if (!(slave.flags.ifr_flags & IFF_SLAVE)) {
-                bb_error_msg("%s is not a slave",
-                        slave_ifname);
+                bb_error_msg("%s is not a slave", slave_ifname);
                 return 1;
         }
 
@@ -462,18 +459,19 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
         };
 #if ENABLE_GETOPT_LONG
         static const char ifenslave_longopts[] ALIGN1 =
-                "change-active\0" No_argument "c"
-                "detach\0"        No_argument "d"
-                "force\0"         No_argument "f"
+                "change-active\0"  No_argument "c"
+                "detach\0"         No_argument "d"
+                "force\0"          No_argument "f"
+                /* "all-interfaces\0" No_argument "a" */
                 ;
 
         applet_long_options = ifenslave_longopts;
 #endif
         INIT_G();
 
-        opt = getopt32(argv, "cdf");
+        opt = getopt32(argv, "cdfa");
         argv += optind;
-        if (opt & (opt-1)) /* options check */
+        if (opt & (opt-1)) /* Only one option can be given */
                 bb_show_usage();
 
         master_ifname = *argv++;
@@ -505,25 +503,25 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
                 return EXIT_SUCCESS;
         }
 
-        res = get_if_settings(master_ifname, &master);
-        if (res) {
+        if (get_if_settings(master_ifname, &master)) {
                 /* Probably a good reason not to go on */
                 bb_perror_msg_and_die("%s: can't get settings", master_ifname);
         }
 
-        /* check if master is indeed a master;
+        /* Check if master is indeed a master;
          * if not then fail any operation
          */
         if (!(master.flags.ifr_flags & IFF_MASTER))
                 bb_error_msg_and_die("%s is not a master", master_ifname);
 
-        /* check if master is up; if not then fail any operation */
+        /* Check if master is up; if not then fail any operation */
         if (!(master.flags.ifr_flags & IFF_UP))
                 bb_error_msg_and_die("%s is not up", master_ifname);
 
-        /* No opts: neither -c[hange] nor -d[etach] -> it's "enslave" then;
-         * and -f[orce] is not there too */
-        if (!opt) {
+#ifdef WHY_BOTHER
+        /* Neither -c[hange] nor -d[etach] -> it's "enslave" then;
+         * and -f[orce] is not there too. Check that it's ethernet. */
+        if (!(opt & (OPT_d|OPT_c|OPT_f)) {
                 /* The family '1' is ARPHRD_ETHER for ethernet. */
                 if (master.hwaddr.ifr_hwaddr.sa_family != 1) {
                         bb_error_msg_and_die(
@@ -531,10 +529,11 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
                                 master_ifname);
                 }
         }
+#endif
 
         /* Accepts only one slave */
         if (opt & OPT_c) {
-                /* change active slave */
+                /* Change active slave */
                 if (get_slave_flags(slave_ifname)) {
                         bb_perror_msg_and_die(
                                 "%s: can't get flags", slave_ifname);
@@ -543,11 +542,11 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
                 return EXIT_SUCCESS;
         }
 
-        /* Accept multiple slaves */
+        /* Accepts multiple slaves */
         res = 0;
         do {
                 if (opt & OPT_d) {
-                        /* detach a slave interface from the master */
+                        /* Detach a slave interface from the master */
                         rv = get_slave_flags(slave_ifname);
                         if (rv) {
                                 /* Can't work with this slave, */
@@ -560,14 +559,12 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
                         }
                         rv = release(master_ifname, slave_ifname);
                         if (rv) {
-                                bb_perror_msg(
-                                        "master %s, slave %s: "
-                                        "can't release",
-                                        master_ifname, slave_ifname);
+                                bb_perror_msg("can't release %s from %s",
+                                        slave_ifname, master_ifname);
                                 res = rv;
                         }
                 } else {
-                        /* attach a slave interface to the master */
+                        /* Attach a slave interface to the master */
                         rv = get_if_settings(slave_ifname, &slave);
                         if (rv) {
                                 /* Can't work with this slave, */
@@ -580,10 +577,8 @@ int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
                         }
                         rv = enslave(master_ifname, slave_ifname);
                         if (rv) {
-                                bb_perror_msg(
-                                        "master %s, slave %s: "
-                                        "can't enslave",
-                                        master_ifname, slave_ifname);
+                                bb_perror_msg("can't enslave %s to %s",
+                                        slave_ifname, master_ifname);
                                 res = rv;
                         }
                 }