jcs.org
Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7#include <Kernel/Process.h>
8
9namespace Kernel {
10
11ErrorOr<FlatPtr> Process::sys$getuid()
12{
13 VERIFY_NO_PROCESS_BIG_LOCK(this);
14 TRY(require_promise(Pledge::stdio));
15 auto credentials = this->credentials();
16 return credentials->uid().value();
17}
18
19ErrorOr<FlatPtr> Process::sys$getgid()
20{
21 VERIFY_NO_PROCESS_BIG_LOCK(this);
22 TRY(require_promise(Pledge::stdio));
23 auto credentials = this->credentials();
24 return credentials->gid().value();
25}
26
27ErrorOr<FlatPtr> Process::sys$geteuid()
28{
29 VERIFY_NO_PROCESS_BIG_LOCK(this);
30 TRY(require_promise(Pledge::stdio));
31 auto credentials = this->credentials();
32 return credentials->euid().value();
33}
34
35ErrorOr<FlatPtr> Process::sys$getegid()
36{
37 VERIFY_NO_PROCESS_BIG_LOCK(this);
38 TRY(require_promise(Pledge::stdio));
39 auto credentials = this->credentials();
40 return credentials->egid().value();
41}
42
43ErrorOr<FlatPtr> Process::sys$getresuid(Userspace<UserID*> user_ruid, Userspace<UserID*> user_euid, Userspace<UserID*> user_suid)
44{
45 VERIFY_NO_PROCESS_BIG_LOCK(this);
46 TRY(require_promise(Pledge::stdio));
47
48 auto credentials = this->credentials();
49 auto uid = credentials->uid();
50 auto euid = credentials->euid();
51 auto suid = credentials->suid();
52
53 TRY(copy_to_user(user_ruid, &uid));
54 TRY(copy_to_user(user_euid, &euid));
55 TRY(copy_to_user(user_suid, &suid));
56 return 0;
57}
58
59ErrorOr<FlatPtr> Process::sys$getresgid(Userspace<GroupID*> user_rgid, Userspace<GroupID*> user_egid, Userspace<GroupID*> user_sgid)
60{
61 VERIFY_NO_PROCESS_BIG_LOCK(this);
62 TRY(require_promise(Pledge::stdio));
63
64 auto credentials = this->credentials();
65 auto gid = credentials->gid();
66 auto egid = credentials->egid();
67 auto sgid = credentials->sgid();
68
69 TRY(copy_to_user(user_rgid, &gid));
70 TRY(copy_to_user(user_egid, &egid));
71 TRY(copy_to_user(user_sgid, &sgid));
72 return 0;
73}
74
75ErrorOr<FlatPtr> Process::sys$getgroups(size_t count, Userspace<GroupID*> user_gids)
76{
77 VERIFY_NO_PROCESS_BIG_LOCK(this);
78 TRY(require_promise(Pledge::stdio));
79
80 auto credentials = this->credentials();
81
82 if (!count)
83 return credentials->extra_gids().size();
84 if (count != credentials->extra_gids().size())
85 return EINVAL;
86 TRY(copy_to_user(user_gids, credentials->extra_gids().data(), sizeof(GroupID) * count));
87 return 0;
88}
89
90}