simcop2387/linux_namespaces
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setting up a git repo for this

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Ryan Voots 2017-05-01 17:23:29 -07:00
commit 768c45ea89
2 changed files with 52 additions and 0 deletions
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#include <stdio.h>
#include <linux/sched.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <dirent.h>
#define _GNU_SOURCE
#include <sched.h>
#include <stdint.h>
#include <errno.h>
struct args {
int c;
char **v;
};
uint8_t CSTACK[8192];
int myreaddir(void *fooargs) {
int len;
struct dirent *pDirent;
DIR *pDir;
struct args *myargs = (struct args *) fooargs;
if (myargs->c < 2) {
printf ("Usage: testprog <dirname>\n");
return 1;
}
mount(NULL, myargs->v[1], NULL, MS_PRIVATE, NULL);
mount(NULL, ".", NULL, MS_PRIVATE, NULL);
umount(myargs->v[1]);
pDir = opendir (myargs->v[1]);
if (pDir == NULL) {
printf ("Cannot open directory '%s'\n", myargs->v[1]);
return 1;
}
while ((pDirent = readdir(pDir)) != NULL) {
printf ("[%s]\n", pDirent->d_name);
}
closedir (pDir);
return 0;
}
int main (int c, char *v[]) {
struct args fooargs = {c: c, v: v};
int ret = clone(&myreaddir, CSTACK+8192, CLONE_NEWUTS|CLONE_NEWNS|CLONE_NEWCGROUP|CLONE_NEWIPC|CLONE_NEWNET|CLONE_NEWPID, (void *) &fooargs);
printf("%05d %05d\n", ret, errno);
}