Update config.{guess,sub}, timestamps 2023-01-01,2023-01-21

[libpcap] / pcap-bpf.c

diff --git a/pcap-bpf.c b/pcap-bpf.c
index d82ecd058b7b2dcc9ff6f727169a2dbd52dd1281..2898e598d8e3916c598c6535d79c9851b008d6b0 100644 (file)
--- a/pcap-bpf.c
+++ b/pcap-bpf.c
@@ -478,7 +478,7 @@ bpf_open(char *errbuf)
 {
        int fd = -1;
        static const char cloning_device[] = "/dev/bpf";
-       int n = 0;
+       u_int n = 0;
        char device[sizeof "/dev/bpf0000000000"];
        static int no_cloning_bpf = 0;
 
@@ -526,7 +526,7 @@ bpf_open(char *errbuf)
                 * that isn't in use.
                 */
                do {
-                       (void)snprintf(device, sizeof(device), "/dev/bpf%d", n++);
+                       (void)snprintf(device, sizeof(device), "/dev/bpf%u", n++);
                        /*
                         * Initially try a read/write open (to allow the inject
                         * method to work).  If that fails due to permission
@@ -661,7 +661,11 @@ bpf_bind(int fd, const char *name, char *errbuf)
                case ENXIO:
                        /*
                         * There's no such device.
+                        *
+                        * There's nothing more to say, so clear out the
+                        * error message.
                         */
+                       errbuf[0] = '\0';
                        return (PCAP_ERROR_NO_SUCH_DEVICE);
 
                case ENETDOWN:
@@ -3052,7 +3056,11 @@ monitor_mode(pcap_t *p, int set)
                case ENXIO:
                        /*
                         * There's no such device.
+                        *
+                        * There's nothing more to say, so clear the
+                        * error message.
                         */
+                       p->errbuf[0] = '\0';
                        close(sock);
                        return (PCAP_ERROR_NO_SUCH_DEVICE);