/*
* Copyright (c) Huawei Technologies Co., Ltd., 2015
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*/
#include "../libclone/libclone.h"
#include "test.h"
#include "safe_macros.h"
#include <stdbool.h>
#define UID_MAP 0
#define GID_MAP 1
static int dummy_child(void *v)
{
(void) v;
return 0;
}
static int check_newuser(void)
{
int pid, status;
if (tst_kvercmp(3, 8, 0) < 0)
tst_brkm(TCONF, NULL, "CLONE_NEWUSER not supported");
pid = do_clone_unshare_test(T_CLONE, CLONE_NEWUSER, dummy_child, NULL);
if (pid == -1)
tst_brkm(TCONF | TERRNO, NULL, "CLONE_NEWUSER not supported");
SAFE_WAIT(NULL, &status);
return 0;
}
LTP_ATTRIBUTE_UNUSED static int updatemap(int cpid, bool type, int idnum,
int parentmappid, void (*cleanup)(void))
{
char path[BUFSIZ];
char content[BUFSIZ];
int fd;
if (type == UID_MAP)
sprintf(path, "/proc/%d/uid_map", cpid);
else if (type == GID_MAP)
sprintf(path, "/proc/%d/gid_map", cpid);
else
tst_brkm(TBROK, cleanup, "invalid type parameter");
sprintf(content, "%d %d 1", idnum, parentmappid);
fd = SAFE_OPEN(cleanup, path, O_WRONLY, 0644);
SAFE_WRITE(cleanup, 1, fd, content, strlen(content));
SAFE_CLOSE(cleanup, fd);
return 0;
}