get rthashsize from kernel

[unix-history] / usr / src / sbin / route / route.c

diff --git a/usr/src/sbin/route/route.c b/usr/src/sbin/route/route.c
index 1843f55..3c0e14f 100644 (file)
--- a/usr/src/sbin/route/route.c
+++ b/usr/src/sbin/route/route.c
@@ -1,5 +1,5 @@
 #ifndef lint
 #ifndef lint

-static char sccsid[] = "@(#)route.c    4.12 (Berkeley) 84/10/15";
+static char sccsid[] = "@(#)route.c    4.13 (Berkeley) 84/10/31";

 #endif
 
 #include <sys/types.h>
 #endif
 
 #include <sys/types.h>


@@ -7,7 +7,6 @@ static char sccsid[] = "@(#)route.c     4.12 (Berkeley) 84/10/15";
 #include <sys/ioctl.h>
 #include <sys/mbuf.h>
 
 #include <sys/ioctl.h>
 #include <sys/mbuf.h>
 

-#define        KERNEL

 #include <net/route.h>
 #include <netinet/in.h>
 
 #include <net/route.h>
 #include <netinet/in.h>
 


@@ -29,7 +28,7 @@ main(argc, argv)
 
        if (argc < 2)
                printf("usage: route [ -f ] [ cmd args ]\n"), exit(1);
 
        if (argc < 2)
                printf("usage: route [ -f ] [ cmd args ]\n"), exit(1);

-       s = socket(AF_INET, SOCK_RAW, 0, 0);
+       s = socket(AF_INET, SOCK_RAW, 0);

        if (s < 0) {
                perror("route: socket");
                exit(1);
        if (s < 0) {
                perror("route: socket");
                exit(1);


@@ -62,6 +61,8 @@ struct nlist nl[] = {
        { "_rthost" },
 #define        N_RTNET         1
        { "_rtnet" },
        { "_rthost" },
 #define        N_RTNET         1
        { "_rtnet" },

+#define N_RTHASHSIZE   2
+       { "_rthashsize" },

        "",
 };
 
        "",
 };
 


@@ -70,8 +71,8 @@ flushroutes()
        struct mbuf mb;
        register struct rtentry *rt;
        register struct mbuf *m;
        struct mbuf mb;
        register struct rtentry *rt;
        register struct mbuf *m;

-       struct mbuf *routehash[RTHASHSIZ];
-       int i, doinghost = 1, kmem;
+       struct mbuf **routehash;
+       int rthashsize, i, doinghost = 1, kmem;

        char *routename();
 
        nlist("/vmunix", nl);
        char *routename();
 
        nlist("/vmunix", nl);


@@ -83,16 +84,24 @@ flushroutes()
                printf("route: \"rtnet\", symbol not in namelist\n");
                exit(1);
        }
                printf("route: \"rtnet\", symbol not in namelist\n");
                exit(1);
        }

+       if (nl[N_RTHASHSIZE].n_value == 0) {
+               printf("route: \"rthashsize\", symbol not in namelist\n");
+               exit(1);
+       }

        kmem = open("/dev/kmem", 0);
        if (kmem < 0) {
                perror("route: /dev/kmem");
                exit(1);
        }
        kmem = open("/dev/kmem", 0);
        if (kmem < 0) {
                perror("route: /dev/kmem");
                exit(1);
        }

+       lseek(kmem, nl[N_RTHASHSIZE].n_value, 0);
+       read(kmem, &rthashsize, sizeof (rthashsize));
+       routehash = (struct mbuf **)malloc(rthashsize*sizeof (struct mbuf *));
+

        lseek(kmem, nl[N_RTHOST].n_value, 0);
        lseek(kmem, nl[N_RTHOST].n_value, 0);

-       read(kmem, routehash, sizeof (routehash));
+       read(kmem, routehash, rthashsize*sizeof (struct mbuf *));

        printf("Flushing routing tables:\n");
 again:
        printf("Flushing routing tables:\n");
 again:

-       for (i = 0; i < RTHASHSIZ; i++) {
+       for (i = 0; i < rthashsize; i++) {

                if (routehash[i] == 0)
                        continue;
                m = routehash[i];
                if (routehash[i] == 0)
                        continue;
                m = routehash[i];


@@ -117,11 +126,12 @@ again:
        }
        if (doinghost) {
                lseek(kmem, nl[N_RTNET].n_value, 0);
        }
        if (doinghost) {
                lseek(kmem, nl[N_RTNET].n_value, 0);

-               read(kmem, routehash, sizeof (routehash));
+               read(kmem, routehash, rthashsize*sizeof (struct mbuf *));

                doinghost = 0;
                goto again;
        }
        close(kmem);
                doinghost = 0;
                goto again;
        }
        close(kmem);

+       free(routehash);

 }
 
 char *
 }
 
 char *