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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2016 Red Hat
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_CLIENT_USERPERM_H
#define CEPH_CLIENT_USERPERM_H
struct UserPerm
{
private:
uid_t m_uid;
gid_t m_gid;
int gid_count;
gid_t *gids;
bool alloced_gids;
void deep_copy_from(const UserPerm& b) {
if (alloced_gids) {
delete[] gids;
alloced_gids = false;
}
m_uid = b.m_uid;
m_gid = b.m_gid;
gid_count = b.gid_count;
if (gid_count > 0) {
gids = new gid_t[gid_count];
alloced_gids = true;
for (int i = 0; i < gid_count; ++i) {
gids[i] = b.gids[i];
}
}
}
public:
UserPerm() : m_uid(-1), m_gid(-1), gid_count(0),
gids(NULL), alloced_gids(false) {}
UserPerm(uid_t uid, gid_t gid, int ngids=0, gid_t *gidlist=NULL) :
m_uid(uid), m_gid(gid), gid_count(ngids),
gids(gidlist), alloced_gids(false) {}
UserPerm(const UserPerm& o) : UserPerm() {
deep_copy_from(o);
}
UserPerm(UserPerm && o) {
m_uid = o.m_uid;
m_gid = o.m_gid;
gid_count = o.gid_count;
gids = o.gids;
alloced_gids = o.alloced_gids;
o.gids = NULL;
o.gid_count = 0;
}
~UserPerm() {
if (alloced_gids)
delete[] gids;
}
UserPerm& operator=(const UserPerm& o) {
deep_copy_from(o);
return *this;
}
uid_t uid() const { return m_uid != (uid_t)-1 ? m_uid : ::geteuid(); }
gid_t gid() const { return m_gid != (gid_t)-1 ? m_gid : ::getegid(); }
bool gid_in_groups(gid_t id) const {
if (id == gid()) return true;
for (int i = 0; i < gid_count; ++i) {
if (id == gids[i]) return true;
}
return false;
}
int get_gids(const gid_t **_gids) const { *_gids = gids; return gid_count; }
void init_gids(gid_t* _gids, int count) {
gids = _gids;
gid_count = count;
alloced_gids = true;
}
void shallow_copy(const UserPerm& o) {
m_uid = o.m_uid;
m_gid = o.m_gid;
gid_count = o.gid_count;
gids = o.gids;
alloced_gids = false;
}
};
#endif
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