Author: eadler
Date: Wed Dec  4 05:06:56 2013
New Revision: 258908
URL: http://svnweb.freebsd.org/changeset/base/258908

Log:
  Avoid using a static buffer in atalk_ntoa.  This will help allow users to 
call route(1) as a library.
  
  Submitted by: Sebastian Huber <[email protected]> (older 
version)
  Discussed on: -hackers
  Reviwed by:   adri (different older version)

Modified:
  head/sbin/route/route.c

Modified: head/sbin/route/route.c
==============================================================================
--- head/sbin/route/route.c     Wed Dec  4 04:29:52 2013        (r258907)
+++ head/sbin/route/route.c     Wed Dec  4 05:06:56 2013        (r258908)
@@ -71,6 +71,8 @@ __FBSDID("$FreeBSD$");
 #include <unistd.h>
 #include <ifaddrs.h>
 
+#define ATALK_BUF_SIZE 20
+
 static struct keytab {
        const char      *kt_cp;
        int     kt_i;
@@ -92,7 +94,7 @@ static int    defaultfib;
 static int     numfibs;
 
 static int     atalk_aton(const char *, struct at_addr *);
-static char    *atalk_ntoa(struct at_addr);
+static char    *atalk_ntoa(struct at_addr, char [ATALK_BUF_SIZE]);
 static void    printb(int, const char *);
 static void    flushroutes(int argc, char *argv[]);
 static int     flushroutes_fib(int);
@@ -495,6 +497,7 @@ routename(struct sockaddr *sa)
 {
        struct sockaddr_dl *sdl;
        const char *cp;
+       char atalk_buf[ATALK_BUF_SIZE];
        static char line[NI_MAXHOST];
        static char domain[MAXHOSTNAMELEN + 1];
        static int first = 1;
@@ -577,7 +580,8 @@ routename(struct sockaddr *sa)
 #endif
        case AF_APPLETALK:
                (void)snprintf(line, sizeof(line), "atalk %s",
-                   atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
+                   atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr,
+                   atalk_buf));
                break;
 
        case AF_LINK:
@@ -622,6 +626,7 @@ netname(struct sockaddr *sa)
 {
        struct sockaddr_dl *sdl;
        static char line[MAXHOSTNAMELEN + 1];
+       char atalk_buf[ATALK_BUF_SIZE];
        int n;
 #ifdef INET
        struct netent *np = NULL;
@@ -685,7 +690,8 @@ netname(struct sockaddr *sa)
 
        case AF_APPLETALK:
                (void)snprintf(line, sizeof(line), "atalk %s",
-                   atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
+                   atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr,
+                   atalk_buf));
                break;
 
        case AF_LINK:
@@ -1858,6 +1864,7 @@ keyword(const char *cp)
 static void
 sodump(struct sockaddr *sa, const char *which)
 {
+       char atalk_buf[ATALK_BUF_SIZE];
 #ifdef INET6
        char nbuf[INET6_ADDRSTRLEN];
 #endif
@@ -1882,7 +1889,8 @@ sodump(struct sockaddr *sa, const char *
 #endif
        case AF_APPLETALK:
                (void)printf("%s: atalk %s; ", which,
-                   atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr));
+                   atalk_ntoa(((struct sockaddr_at *)(void *)sa)->sat_addr,
+                   atalk_buf));
                break;
        }
        (void)fflush(stdout);
@@ -1952,11 +1960,9 @@ atalk_aton(const char *text, struct at_a
 }
 
 static char *
-atalk_ntoa(struct at_addr at)
+atalk_ntoa(struct at_addr at, char buf[ATALK_BUF_SIZE])
 {
-       static char buf[20];
-
-       (void)snprintf(buf, sizeof(buf), "%u.%u", ntohs(at.s_net), at.s_node);
-       buf[sizeof(buf) - 1] = '\0';
+       (void)snprintf(buf, ATALK_BUF_SIZE, "%u.%u", ntohs(at.s_net), 
at.s_node);
+       buf[ATALK_BUF_SIZE - 1] = '\0';
        return(buf);
 }
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