linux-imx

​

static int gid_cmp(const void *_a, const void *_b)

{

    kgid_t a = *(kgid_t *)_a;

    kgid_t b = *(kgid_t *)_b;

​

    return gid_gt(a, b) - gid_lt(a, b);

}

​

{

    sort(group_info->gid, group_info->ngroups, sizeof(*group_info->gid),

         gid_cmp, NULL);

}

​

/* a simple bsearch */

int groups_search(const struct group_info *group_info, kgid_t grp)

{

    unsigned int left, right;

​

    if (!group_info)

        return 0;

​

    left = 0;

​

/**

 * set_groups - Change a group subscription in a set of credentials

 * @new: The newly prepared set of credentials to alter

 * @group_info: The group list to install

 */

void set_groups(struct cred *new, struct group_info *group_info)

{

    put_group_info(new->group_info);

    get_group_info(group_info);

    new->group_info = group_info;

}

​

EXPORT_SYMBOL(set_groups);

​

/**

 * set_current_groups - Change current's group subscription

 * @group_info: The group list to impose

 *

    group_info = groups_alloc(gidsetsize);

    if (!group_info)

        return -ENOMEM;

    retval = groups_from_user(group_info, grouplist);

    if (retval) {

        put_group_info(group_info);

        return retval;

    }

​

    retval = set_current_groups(group_info);

    put_group_info(group_info);

​

    return retval;

}

​

/*

 * Check whether we're fsgid/egid or in the supplemental group..

 */

int in_group_p(kgid_t grp)