namespaces.c (1bc82070fa2763bdca626fa8bde72b35f11e8960) namespaces.c (769071ac9f20b6a447410c7eaa55d1a5233ef40c)
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/proc_fs.h>
3#include <linux/nsproxy.h>
4#include <linux/ptrace.h>
5#include <linux/namei.h>
6#include <linux/file.h>
7#include <linux/utsname.h>
8#include <net/net_namespace.h>

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28#endif
29#ifdef CONFIG_USER_NS
30 &userns_operations,
31#endif
32 &mntns_operations,
33#ifdef CONFIG_CGROUPS
34 &cgroupns_operations,
35#endif
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/proc_fs.h>
3#include <linux/nsproxy.h>
4#include <linux/ptrace.h>
5#include <linux/namei.h>
6#include <linux/file.h>
7#include <linux/utsname.h>
8#include <net/net_namespace.h>

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28#endif
29#ifdef CONFIG_USER_NS
30 &userns_operations,
31#endif
32 &mntns_operations,
33#ifdef CONFIG_CGROUPS
34 &cgroupns_operations,
35#endif
36#ifdef CONFIG_TIME_NS
37 &timens_operations,
38 &timens_for_children_operations,
39#endif
36};
37
38static const char *proc_ns_get_link(struct dentry *dentry,
39 struct inode *inode,
40 struct delayed_call *done)
41{
42 const struct proc_ns_operations *ns_ops = PROC_I(inode)->ns_ops;
43 struct task_struct *task;
44 struct path ns_path;
40};
41
42static const char *proc_ns_get_link(struct dentry *dentry,
43 struct inode *inode,
44 struct delayed_call *done)
45{
46 const struct proc_ns_operations *ns_ops = PROC_I(inode)->ns_ops;
47 struct task_struct *task;
48 struct path ns_path;
45 int error = -EACCES;
49 void *error = ERR_PTR(-EACCES);
46
47 if (!dentry)
48 return ERR_PTR(-ECHILD);
49
50 task = get_proc_task(inode);
51 if (!task)
50
51 if (!dentry)
52 return ERR_PTR(-ECHILD);
53
54 task = get_proc_task(inode);
55 if (!task)
52 return ERR_PTR(-EACCES);
56 return error;
53
57
54 if (!ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS))
55 goto out;
56
57 error = ns_get_path(&ns_path, task, ns_ops);
58 if (error)
59 goto out;
60
61 error = nd_jump_link(&ns_path);
62out:
58 if (ptrace_may_access(task, PTRACE_MODE_READ_FSCREDS)) {
59 error = ns_get_path(&ns_path, task, ns_ops);
60 if (!error)
61 nd_jump_link(&ns_path);
62 }
63 put_task_struct(task);
63 put_task_struct(task);
64 return ERR_PTR(error);
64 return error;
65}
66
67static int proc_ns_readlink(struct dentry *dentry, char __user *buffer, int buflen)
68{
69 struct inode *inode = d_inode(dentry);
70 const struct proc_ns_operations *ns_ops = PROC_I(inode)->ns_ops;
71 struct task_struct *task;
72 char name[50];

--- 107 unchanged lines hidden --- 		65}
66
67static int proc_ns_readlink(struct dentry *dentry, char __user *buffer, int buflen)
68{
69 struct inode *inode = d_inode(dentry);
70 const struct proc_ns_operations *ns_ops = PROC_I(inode)->ns_ops;
71 struct task_struct *task;
72 char name[50];

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