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| author | Eric W. Biederman <ebiederm@xmission.com> | 2010-03-07 18:43:27 -0800 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2011-05-10 14:35:35 -0700 |
| commit | 34482e89a5218f0f9317abf1cfba3bb38b5c29dd (patch) | |
| tree | 94a2c2409fbbef8a01aae589469ee44180e6e04f /kernel | |
| parent | 13b6f57623bc485e116344fe91fbcb29f149242b (diff) | |
| download | linux-34482e89a5218f0f9317abf1cfba3bb38b5c29dd.tar.gz linux-34482e89a5218f0f9317abf1cfba3bb38b5c29dd.tar.bz2 linux-34482e89a5218f0f9317abf1cfba3bb38b5c29dd.zip | |
ns proc: Add support for the uts namespace
Acked-by: Daniel Lezcano <daniel.lezcano@free.fr>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/utsname.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/kernel/utsname.c b/kernel/utsname.c index 44646179eaba..bff131b9510a 100644 --- a/kernel/utsname.c +++ b/kernel/utsname.c @@ -15,6 +15,7 @@ #include <linux/err.h> #include <linux/slab.h> #include <linux/user_namespace.h> +#include <linux/proc_fs.h> static struct uts_namespace *create_uts_ns(void) { @@ -79,3 +80,41 @@ void free_uts_ns(struct kref *kref) put_user_ns(ns->user_ns); kfree(ns); } + +static void *utsns_get(struct task_struct *task) +{ + struct uts_namespace *ns = NULL; + struct nsproxy *nsproxy; + + rcu_read_lock(); + nsproxy = task_nsproxy(task); + if (nsproxy) { + ns = nsproxy->uts_ns; + get_uts_ns(ns); + } + rcu_read_unlock(); + + return ns; +} + +static void utsns_put(void *ns) +{ + put_uts_ns(ns); +} + +static int utsns_install(struct nsproxy *nsproxy, void *ns) +{ + get_uts_ns(ns); + put_uts_ns(nsproxy->uts_ns); + nsproxy->uts_ns = ns; + return 0; +} + +const struct proc_ns_operations utsns_operations = { + .name = "uts", + .type = CLONE_NEWUTS, + .get = utsns_get, + .put = utsns_put, + .install = utsns_install, +}; + |