diff options
Diffstat (limited to 'usr.sbin/ppp/ppp/datalink.c')
| -rw-r--r-- | usr.sbin/ppp/ppp/datalink.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/usr.sbin/ppp/ppp/datalink.c b/usr.sbin/ppp/ppp/datalink.c index 83ce82e7fe2..cd7031417a1 100644 --- a/usr.sbin/ppp/ppp/datalink.c +++ b/usr.sbin/ppp/ppp/datalink.c @@ -23,7 +23,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $OpenBSD: datalink.c,v 1.42 2002/06/15 08:02:00 brian Exp $ + * $OpenBSD: datalink.c,v 1.43 2003/04/07 23:58:53 deraadt Exp $ */ #include <sys/param.h> @@ -1427,14 +1427,16 @@ datalink_NextName(struct datalink *dl) { int f, n; char *name, *oname; + size_t len; - n = strlen(dl->name); - name = (char *)malloc(n+3); - for (f = n - 1; f >= 0; f--) + len = strlen(dl->name); + name = (char *)malloc(len+3); + for (f = len - 1; f >= 0; f--) if (!isdigit(dl->name[f])) break; - n = sprintf(name, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); - sprintf(name + n, "%d", atoi(dl->name + f + 1) + 1); + snprintf(name, len+3, "%.*s-", dl->name[f] == '-' ? f : f + 1, dl->name); + n = strlen(name); + snprintf(name + n, len+3 - n, "%d", atoi(dl->name + f + 1) + 1); oname = dl->name; dl->name = name; /* our physical link name isn't updated (it probably isn't created yet) */ |