Commit | Line | Data |
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735bef47 | 1 | /* |
c0c0989a | 2 | * SPDX-License-Identifier: LGPL-2.1-only |
735bef47 | 3 | * |
c0c0989a | 4 | * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com> |
735bef47 MJ |
5 | */ |
6 | ||
c0c0989a MJ |
7 | #ifndef _LTTNG_NS_H |
8 | #define _LTTNG_NS_H | |
735bef47 MJ |
9 | |
10 | /* | |
11 | * The lowest valid inode number that can be allocated in the proc filesystem | |
12 | * is 0xF0000000. Any number below can be used internally as an error code. | |
13 | * | |
14 | * Zero is used in the kernel as an error code, it's the value we will return | |
15 | * when we fail to read the proper inode number. | |
16 | * | |
17 | * One is used internally to identify an uninitialized cache entry, it should | |
18 | * never be returned. | |
19 | */ | |
20 | ||
21 | enum ns_ino_state { | |
22 | NS_INO_UNAVAILABLE = 0x0, | |
23 | NS_INO_UNINITIALIZED = 0x1, | |
24 | NS_INO_MIN = 0xF0000000, | |
25 | }; | |
26 | ||
c5e8ef85 MJ |
27 | /* |
28 | * The longest possible namespace proc path is with the cgroup ns | |
29 | * and the maximum theoretical linux pid of 536870912 : | |
30 | * | |
31 | * /proc/self/task/536870912/ns/cgroup | |
32 | */ | |
33 | #define LTTNG_PROC_NS_PATH_MAX 40 | |
34 | ||
735bef47 | 35 | #endif /* _LTTNG_NS_H */ |