1 =================================
2 Documentation for /proc/sys/user/
3 =================================
4
5 kernel version 4.9.0
6
7 Copyright (c) 2016 Eric Biederman<
8
9 ----------------------------------------------
10
11 This file contains the documentation for the s
12 /proc/sys/user.
13
14 The files in this directory can be used to ove
15 limits on the number of namespaces and other o
16 per user per user namespace limits.
17
18 The primary purpose of these limits is to stop
19 malfunction and attempt to create a ridiculous
20 before the malfunction becomes a system wide p
21 intention that the defaults of these limits ar
22 no program in normal operation should run into
23
24 The creation of per user per user namespace ob
25 the user in the user namespace who created the
26 verified to be below the per user limit in tha
27
28 The creation of objects is also charged to all
29 who created user namespaces the creation of th
30 in (user namespaces can be nested) and verifie
31 limits in the user namespaces of those users.
32
33 This recursive counting of created objects ens
34 user namespace does not allow a user to escape
35
36 Currently, these files are in /proc/sys/user:
37
38 max_cgroup_namespaces
39 =====================
40
41 The maximum number of cgroup namespaces that
42 user namespace may create.
43
44 max_ipc_namespaces
45 ==================
46
47 The maximum number of ipc namespaces that an
48 user namespace may create.
49
50 max_mnt_namespaces
51 ==================
52
53 The maximum number of mount namespaces that
54 user namespace may create.
55
56 max_net_namespaces
57 ==================
58
59 The maximum number of network namespaces tha
60 current user namespace may create.
61
62 max_pid_namespaces
63 ==================
64
65 The maximum number of pid namespaces that an
66 user namespace may create.
67
68 max_time_namespaces
69 ===================
70
71 The maximum number of time namespaces that a
72 user namespace may create.
73
74 max_user_namespaces
75 ===================
76
77 The maximum number of user namespaces that a
78 user namespace may create.
79
80 max_uts_namespaces
81 ==================
82
83 The maximum number of user namespaces that a
84 user namespace may create.
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.