GDBserver

linux-namespaces.h
Go to the documentation of this file.
1 /* Linux namespaces(7) support.
2
3 Copyright (C) 2015-2018 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20 #ifndef LINUX_NAMESPACES_H
21 #define LINUX_NAMESPACES_H
22
23 /* Set to nonzero to enable debugging of Linux namespaces code. */
24
25 extern int debug_linux_namespaces;
26
27 /* Enumeration of Linux namespace types. */
28
29 enum linux_ns_type
30 {
31 /* IPC namespace: System V IPC, POSIX message queues. */
32 LINUX_NS_IPC,
33
34 /* Mount namespace: mount points. */
35 LINUX_NS_MNT,
36
37 /* Network namespace: network devices, stacks, ports, etc. */
38 LINUX_NS_NET,
39
40 /* PID namespace: process IDs. */
41 LINUX_NS_PID,
42
43 /* User namespace: user and group IDs. */
44 LINUX_NS_USER,
45
46 /* UTS namespace: hostname and NIS domain name. */
47 LINUX_NS_UTS,
48
49 /* Number of Linux namespaces. */
50 NUM_LINUX_NS_TYPES
51 };
52
53 /* Return nonzero if process PID has the same TYPE namespace as the
54 calling process, or if the kernel does not support TYPE namespaces
55 (in which case there is only one TYPE namespace). Return zero if
56 the kernel supports TYPE namespaces and the two processes have
57 different TYPE namespaces. */
58
59 extern int linux_ns_same (pid_t pid, enum linux_ns_type type);
60
61 /* Like gdb_open_cloexec, but in the mount namespace of process
62 PID. */
63
64 extern int linux_mntns_open_cloexec (pid_t pid, const char *filename,
65 int flags, mode_t mode);
66
67 /* Like unlink(2), but in the mount namespace of process PID. */
68
69 extern int linux_mntns_unlink (pid_t pid, const char *filename);
70
71 /* Like readlink(2), but in the mount namespace of process PID. */
72
73 extern ssize_t linux_mntns_readlink (pid_t pid, const char *filename,
74 char *buf, size_t bufsiz);
75
76 #endif /* LINUX_NAMESPACES_H */
linux_mntns_open_cloexec
int linux_mntns_open_cloexec(pid_t pid, const char *filename, int flags, mode_t mode)
Definition: linux-namespaces.c:970
linux_ns_type
linux_ns_type
Definition: linux-namespaces.h:29
linux_ns_same
int linux_ns_same(pid_t pid, enum linux_ns_type type)
Definition: linux-namespaces.c:145
LINUX_NS_USER
Definition: linux-namespaces.h:44
LINUX_NS_UTS
Definition: linux-namespaces.h:47
NUM_LINUX_NS_TYPES
Definition: linux-namespaces.h:50
LINUX_NS_NET
Definition: linux-namespaces.h:38
linux_mnsh::pid
pid_t pid
Definition: linux-namespaces.c:622
linux_mntns_readlink
ssize_t linux_mntns_readlink(pid_t pid, const char *filename, char *buf, size_t bufsiz)
Definition: linux-namespaces.c:1037
debug_linux_namespaces
int debug_linux_namespaces
Definition: linux-namespaces.c:33
LINUX_NS_MNT
Definition: linux-namespaces.h:35
linux_mntns_unlink
int linux_mntns_unlink(pid_t pid, const char *filename)
Definition: linux-namespaces.c:1004
LINUX_NS_PID
Definition: linux-namespaces.h:41
LINUX_NS_IPC
Definition: linux-namespaces.h:32