Release 4.7 include/linux/user_namespace.h
#ifndef _LINUX_USER_NAMESPACE_H
#define _LINUX_USER_NAMESPACE_H
#include <linux/kref.h>
#include <linux/nsproxy.h>
#include <linux/ns_common.h>
#include <linux/sched.h>
#include <linux/err.h>
#define UID_GID_MAP_MAX_EXTENTS 5
struct uid_gid_map { /* 64 bytes -- 1 cache line */
u32 nr_extents;
struct uid_gid_extent {
u32 first;
u32 lower_first;
u32 count;
}
extent[UID_GID_MAP_MAX_EXTENTS];
};
#define USERNS_SETGROUPS_ALLOWED 1UL
#define USERNS_INIT_FLAGS USERNS_SETGROUPS_ALLOWED
struct user_namespace {
struct uid_gid_map uid_map;
struct uid_gid_map gid_map;
struct uid_gid_map projid_map;
atomic_t count;
struct user_namespace *parent;
int level;
kuid_t owner;
kgid_t group;
struct ns_common ns;
unsigned long flags;
/* Register of per-UID persistent keyrings for this namespace */
#ifdef CONFIG_PERSISTENT_KEYRINGS
struct key *persistent_keyring_register;
struct rw_semaphore persistent_keyring_register_sem;
#endif
};
extern struct user_namespace init_user_ns;
#ifdef CONFIG_USER_NS
static inline struct user_namespace *get_user_ns(struct user_namespace *ns)
{
if (ns)
atomic_inc(&ns->count);
return ns;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| cedric le goater | cedric le goater | 27 | 93.10% | 1 | 50.00% |
| eric w. biederman | eric w. biederman | 2 | 6.90% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
extern int create_user_ns(struct cred *new);
extern int unshare_userns(unsigned long unshare_flags, struct cred **new_cred);
extern void free_user_ns(struct user_namespace *ns);
static inline void put_user_ns(struct user_namespace *ns)
{
if (ns && atomic_dec_and_test(&ns->count))
free_user_ns(ns);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| cedric le goater | cedric le goater | 22 | 75.86% | 1 | 50.00% |
| eric w. biederman | eric w. biederman | 7 | 24.14% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
struct seq_operations;
extern const struct seq_operations proc_uid_seq_operations;
extern const struct seq_operations proc_gid_seq_operations;
extern const struct seq_operations proc_projid_seq_operations;
extern ssize_t proc_uid_map_write(struct file *, const char __user *, size_t, loff_t *);
extern ssize_t proc_gid_map_write(struct file *, const char __user *, size_t, loff_t *);
extern ssize_t proc_projid_map_write(struct file *, const char __user *, size_t, loff_t *);
extern ssize_t proc_setgroups_write(struct file *, const char __user *, size_t, loff_t *);
extern int proc_setgroups_show(struct seq_file *m, void *v);
extern bool userns_may_setgroups(const struct user_namespace *ns);
#else
static inline struct user_namespace *get_user_ns(struct user_namespace *ns)
{
return &init_user_ns;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| cedric le goater | cedric le goater | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
static inline int create_user_ns(struct cred *new)
{
return -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| cedric le goater | cedric le goater | 9 | 56.25% | 1 | 33.33% |
| serge hallyn | serge hallyn | 7 | 43.75% | 2 | 66.67% |
| Total | 16 | 100.00% | 3 | 100.00% |
static inline int unshare_userns(unsigned long unshare_flags,
struct cred **new_cred)
{
if (unshare_flags & CLONE_NEWUSER)
return -EINVAL;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 30 | 100.00% | 1 | 100.00% |
| Total | 30 | 100.00% | 1 | 100.00% |
static inline void put_user_ns(struct user_namespace *ns)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| cedric le goater | cedric le goater | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline bool userns_may_setgroups(const struct user_namespace *ns)
{
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
#endif
#endif /* _LINUX_USER_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| eric w. biederman | eric w. biederman | 260 | 59.36% | 10 | 55.56% |
| cedric le goater | cedric le goater | 136 | 31.05% | 1 | 5.56% |
| david howells | david howells | 16 | 3.65% | 2 | 11.11% |
| serge hallyn | serge hallyn | 14 | 3.20% | 2 | 11.11% |
| al viro | al viro | 6 | 1.37% | 1 | 5.56% |
| oleg nesterov | oleg nesterov | 3 | 0.68% | 1 | 5.56% |
| fabian frederick | fabian frederick | 3 | 0.68% | 1 | 5.56% |
| Total | 438 | 100.00% | 18 | 100.00% |
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