g_chroot.c

#include <stdio.h>
#include <unistd.h>

int enter_chroot(const char * root) {
	/* chroot */
	chdir(root);
	if (chroot(root) != 0) {
		perror("chroot");
		return 1;
	}
}

int read_print(const char* path) {
	FILE *f;
	f = fopen(path, "r");
	if (f == NULL) {
		perror(path);
		return 1;
	} else {
		char buffer[50];
		while (fgets(buffer, sizeof(buffer), f)) {
			printf("%s", buffer);
		}
	}
	return 0;
}

int main(void) {
	//read_print("/etc/hostname");
	if(enter_chroot("/home/fmount/projects/c_gopherd/example")) {
		return 1;
	}
	int val = read_print("gophermap");
	return val;
}