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#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <libgen.h>
#include <stdlib.h>
#include <sys/types.h>
#include <dirent.h>
#include <stdbool.h>
int discovery()
{
DIR *dir;
struct dirent *ent;
bool comma = false;
if ((dir = opendir ("/sys/kernel/debug/ieee80211/")) != NULL) {
printf("{\"data\":[");
while ((ent = readdir (dir)) != NULL) {
if (strcmp(".", ent->d_name) && strcmp("..", ent->d_name)) {
if (comma)
printf(",");
printf("{\"{#PHY}\":\"%s\"}", ent->d_name);
comma = true;
}
}
printf("]}\n");
closedir(dir);
} else {
perror("");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
int get_param(char *phy, char *stat)
{
char *filename = NULL;
FILE *f = NULL;
phy = basename(phy);
stat = basename(stat);
if (asprintf(&filename, "/sys/kernel/debug/ieee80211/%s/statistics/%s", phy, stat) > 0)
f = fopen(filename, "r");
if (f != NULL) {
char temp[256];
while (fgets(temp, 256, f) != NULL)
printf("%s",temp);
fclose(f);
} else {
perror("");
return EXIT_FAILURE;
}
free(filename);
return EXIT_SUCCESS;
}
int usage(char *name)
{
fprintf(stderr, "Usage:\n");
fprintf(stderr, " %s discovery\n", name);
fprintf(stderr, " => print mac80211.phydiscovery discovery rule\n");
fprintf(stderr, " %s PHY STAT\n", name);
fprintf(stderr, " => cat /sys/kernel/debug/ieee80211/PHY/statistics/STAT as root\n");
return EXIT_FAILURE;
}
int main(int argc, char *argv[])
{
switch (argc) {
case 2:
return discovery();
case 3:
return get_param(argv[1], argv[2]);
default:
return usage(argv[0]);
}
}
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