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b7cdc182 | 1 | /* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) |
dc923e75 MJ |
2 | * |
3 | * wrapper/user_namespace.h | |
4 | * | |
5 | * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com> | |
6 | * | |
7 | */ | |
8 | ||
9 | #ifndef _LTTNG_WRAPPER_USER_NAMESPACE_H | |
10 | #define _LTTNG_WRAPPER_USER_NAMESPACE_H | |
11 | ||
12 | #include <linux/version.h> | |
13 | #include <linux/user_namespace.h> | |
14 | ||
15 | ||
dc923e75 MJ |
16 | #define lttng_current_xxuid(xxx) \ |
17 | (from_kuid_munged(&init_user_ns, current_##xxx())) | |
18 | ||
19 | #define lttng_current_vxxuid(xxx) \ | |
20 | (from_kuid_munged(current_user_ns(), current_##xxx())) | |
21 | ||
22 | #define lttng_current_xxgid(xxx) \ | |
23 | (from_kgid_munged(&init_user_ns, current_##xxx())) | |
24 | ||
25 | #define lttng_current_vxxgid(xxx) \ | |
26 | (from_kgid_munged(current_user_ns(), current_##xxx())) | |
27 | ||
1965e6b4 MJ |
28 | static inline |
29 | uid_t lttng_task_vuid(struct task_struct *p, struct user_namespace *ns) | |
30 | { | |
31 | uid_t uid; | |
32 | kuid_t kuid; | |
33 | ||
34 | kuid = task_cred_xxx(p, uid); | |
35 | uid = from_kuid_munged(ns, kuid); | |
36 | ||
37 | return uid; | |
38 | } | |
39 | ||
40 | static inline | |
41 | gid_t lttng_task_vgid(struct task_struct *p, struct user_namespace *ns) | |
42 | { | |
43 | gid_t gid; | |
44 | kgid_t kgid; | |
45 | ||
46 | kgid = task_cred_xxx(p, gid); | |
47 | gid = from_kgid_munged(ns, kgid); | |
48 | ||
49 | return gid; | |
50 | } | |
51 | ||
dc923e75 MJ |
52 | #define lttng_current_uid() (lttng_current_xxuid(uid)) |
53 | #define lttng_current_euid() (lttng_current_xxuid(euid)) | |
54 | #define lttng_current_suid() (lttng_current_xxuid(suid)) | |
55 | #define lttng_current_fsuid() (lttng_current_xxuid(fsuid)) | |
56 | #define lttng_current_gid() (lttng_current_xxgid(gid)) | |
57 | #define lttng_current_egid() (lttng_current_xxgid(egid)) | |
58 | #define lttng_current_sgid() (lttng_current_xxgid(sgid)) | |
59 | #define lttng_current_fsgid() (lttng_current_xxgid(fsgid)) | |
60 | ||
61 | #define lttng_current_vuid() (lttng_current_vxxuid(uid)) | |
62 | #define lttng_current_veuid() (lttng_current_vxxuid(euid)) | |
63 | #define lttng_current_vsuid() (lttng_current_vxxuid(suid)) | |
64 | #define lttng_current_vfsuid() (lttng_current_vxxuid(fsuid)) | |
65 | #define lttng_current_vgid() (lttng_current_vxxgid(gid)) | |
66 | #define lttng_current_vegid() (lttng_current_vxxgid(egid)) | |
67 | #define lttng_current_vsgid() (lttng_current_vxxgid(sgid)) | |
68 | #define lttng_current_vfsgid() (lttng_current_vxxgid(fsgid)) | |
69 | ||
70 | #endif /* _LTTNG_WRAPPER_USER_NAMESPACE_H */ |