static int print_general_info(libmtd_t libmtd, const struct mtd_info *mtd_info,
int all)
{
int i, err, first = 1;
struct mtd_dev_info mtd;
printf("Count of MTD devices: %d\n", mtd_info->mtd_dev_cnt);
if (mtd_info->mtd_dev_cnt == 0)
return 0;
for (i = mtd_info->lowest_mtd_num;
i <= mtd_info->highest_mtd_num; i++) {
err = mtd_get_dev_info1(libmtd, i, &mtd);
if (err == -1) {
if (errno == ENODEV)
continue;
return sys_errmsg("libmtd failed to get MTD device %d "
"information", i);
}
if (!first)
printf(", mtd%d", i);
else {
printf("Present MTD devices: mtd%d", i);
first = 0;
}
}
printf("\n");
printf("Sysfs interface supported: %s\n",
mtd_info->sysfs_supported ? "yes" : "no");
if (!all)
return 0;
printf("\n");
for (i = mtd_info->lowest_mtd_num;
i <= mtd_info->highest_mtd_num; i++) {
if (!mtd_dev_present(libmtd, i))
continue;
err = print_dev_info(libmtd, mtd_info, i);
if (err)
return err;
}
return 0;
}
int main(int argc, char * const argv[])
{
int err;
libmtd_t libmtd;
struct mtd_info mtd_info;
err = parse_opt(argc, argv);
if (err)
return -1;
libmtd = libmtd_open();
if (libmtd == NULL) {
if (errno == 0)
return errmsg("MTD is not present in the system");
return sys_errmsg("cannot open libmtd");
}
err = mtd_get_info(libmtd, &mtd_info);
if (err) {
if (errno == ENODEV)
return errmsg("MTD is not present");
return sys_errmsg("cannot get MTD information");
}
if (!args.all && args.node) {
int mtdn;
/*
* A character device was specified, translate this to MTD
* device number.
*/
mtdn = translate_dev(libmtd, args.node);
if (mtdn < 0)
goto out_libmtd;
err = print_dev_info(libmtd, &mtd_info, mtdn);
} else
err = print_general_info(libmtd, &mtd_info, args.all);
if (err)
goto out_libmtd;
libmtd_close(libmtd);
return 0;
out_libmtd:
libmtd_close(libmtd);
return -1;
}
int
main(int argc, char *argv[])
{
pcap_if_t *all_devs;
pcap_if_t *dev;
char err_buf[PCAP_ERRBUF_SIZE];
char dev_name[16];
pcap_t *handle; /* Session handle */
bpf_u_int32 mask;
bpf_u_int32 net;
struct pcap_pkthdr header; /* The header that pcap gives us */
const u_char *packet; /* The actual packet */
/* Find all the devices */
if (pcap_findalldevs(&all_devs, err_buf) == -1) {
fprintf(stderr, "Error in pcap_findalldevs(): %s\n", err_buf);
exit(EXIT_FAILURE);
}
/* Loop all the devices */
printf("\nDevices in this computer:\n");
for (dev = all_devs; dev != NULL; dev = dev->next)
print_dev_info(dev);
printf("Please enter the device name which you want to open:\n>> ");
fgets(dev_name, sizeof(dev_name), stdin);
/* Remove the '\n' in the buf */
dev_name[strlen(dev_name) - 1] = '\0';
/* Get the net id and the mask */
if (pcap_lookupnet(dev_name, &net, &mask, err_buf) == -1) {
fprintf(stderr, "Can't get netmask for device %s: %s\n",
dev_name, err_buf);
net = 0;
mask = 0;
}
/* Open the device */
handle = pcap_open_live(dev_name, 65535, 1, 0, err_buf);
if (handle == NULL) {
fprintf(stderr, "Couldn't open device %s: %s\n",
dev_name, err_buf);
exit(EXIT_FAILURE);
}
/*
if (pcap_datalink(handle) != DLT_EN10MB) {
fprintf(stderr, "Device %s doesn't provide Ethernet headers - "
"not supported\n", dev_name);
exit(EXIT_FAILURE);
}
*/
printf("\nCapture Device: %s\n", dev_name);
printf("------------------------------\n\n");
int number = 0;
while (1) {
/* Grab a packet */
packet = pcap_next(handle, &header);
if (packet == NULL)
continue;
printf("Packet length: %d\n", header.len);
printf("Number of bytes: %d\n", header.caplen);
printf("Recieved time: %s\n",
ctime((const time_t *) &(header.ts.tv_sec)));
++number;
if (number >= 10)
break;
}
/* */
number = 0;
pcap_loop(handle, -1, got_packet, (u_char *) &number);
/* Close device */
pcap_close(handle);
return 0;
}
