seekdir test

main.c (text/x-csrc), 744 bytes, created by Petre Rodan on 2024-01-22 06:53:47 UTC

#define _GNU_SOURCE
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#include <stdlib.h>

int main()
{
	DIR *dp;
	const char device_dir[] = "/sys/bus/";
	char *scan_el_dir;
	int ret;
	const struct dirent *ent;

	dp = opendir(device_dir);
	if (!dp)
		return -1;

	printf(" pre:         ");
	while (ent = readdir(dp), ent) {
		printf(" %s", ent->d_name);
	}
	printf("\n");

	seekdir(dp, 0);
	printf(" s0 location:  %lu\n", telldir(dp));
	printf(" s0 entries:  ");
	while (ent = readdir(dp), ent) {
		printf(" %s", ent->d_name);
	}
	printf("\n");

	rewinddir(dp);
	printf(" rew location: %lu\n", telldir(dp));
	printf(" rew entries:  ");
	while (ent = readdir(dp), ent) {
		printf(" %s", ent->d_name);
	}
	printf("\n");

	return 0;
}