Quoting Richard Guy Briggs (rgb@xxxxxxxxxx):
> Log the namespace details of a task.
>
> Signed-off-by: Richard Guy Briggs <rgb@xxxxxxxxxx>
Acked-by: Serge Hallyn <serge.hallyn@xxxxxxxxxxxxx>
Looks good, and does look useful. We'll certainly want to also dump
netns and userns for some target objects eventually.
> ---
> include/linux/audit.h | 7 +++++++
> kernel/audit.c | 38 ++++++++++++++++++++++++++++++++++++++
> 2 files changed, 45 insertions(+), 0 deletions(-)
>
> diff --git a/include/linux/audit.h b/include/linux/audit.h
> index 22cfddb..0ef404a 100644
> --- a/include/linux/audit.h
> +++ b/include/linux/audit.h
> @@ -101,6 +101,13 @@ extern int __weak audit_classify_compat_syscall(int abi, unsigned syscall);
> struct filename;
>
> extern void audit_log_session_info(struct audit_buffer *ab);
> +#ifdef CONFIG_NAMESPACES
> +extern void audit_log_namespace_info(struct audit_buffer *ab, struct task_struct *tsk);
> +#else
> +void audit_log_namespace_info(struct audit_buffer *ab, struct task_struct *tsk)
> +{
> +}
> +#endif
>
> #ifdef CONFIG_AUDIT_COMPAT_GENERIC
> #define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
> diff --git a/kernel/audit.c b/kernel/audit.c
> index 59c0bbe..9049049 100644
> --- a/kernel/audit.c
> +++ b/kernel/audit.c
> @@ -64,7 +64,15 @@
> #endif
> #include <linux/freezer.h>
> #include <linux/tty.h>
> +#include <linux/nsproxy.h>
> +#include <linux/utsname.h>
> +#include <linux/ipc_namespace.h>
> +#include "../fs/mount.h"
> +#include <linux/mount.h>
> +#include <linux/mnt_namespace.h>
> #include <linux/pid_namespace.h>
> +#include <net/net_namespace.h>
> +#include <linux/user_namespace.h>
> #include <net/netns/generic.h>
>
> #include "audit.h"
> @@ -1617,6 +1625,35 @@ void audit_log_session_info(struct audit_buffer *ab)
> audit_log_format(ab, " auid=%u ses=%u", auid, sessionid);
> }
>
> +#ifdef CONFIG_NAMESPACES
> +void audit_log_namespace_info(struct audit_buffer *ab, struct task_struct *tsk)
> +{
> + struct nsproxy *nsproxy;
> +
> + rcu_read_lock();
> + nsproxy = task_nsproxy(tsk);
> + if (nsproxy != NULL) {
> + audit_log_format(ab, " mntns=%x", nsproxy->mnt_ns->serial_num);
> +#ifdef CONFIG_NET_NS
> + audit_log_format(ab, " netns=%x", nsproxy->net_ns->serial_num);
> +#endif
> +#ifdef CONFIG_UTS_NS
> + audit_log_format(ab, " utsns=%x", nsproxy->uts_ns->serial_num);
> +#endif
> +#ifdef CONFIG_IPC_NS
> + audit_log_format(ab, " ipcns=%x", nsproxy->ipc_ns->serial_num);
> +#endif
> + }
> +#ifdef CONFIG_PID_NS
> + audit_log_format(ab, " pidns=%x", task_active_pid_ns(tsk)->serial_num);
> +#endif
> +#ifdef CONFIG_USER_NS
> + audit_log_format(ab, " userns=%x", task_cred_xxx(tsk, user_ns)->serial_num);
> +#endif
> + rcu_read_unlock();
> +}
> +#endif /* CONFIG_NAMESPACES */
> +
> void audit_log_key(struct audit_buffer *ab, char *key)
> {
> audit_log_format(ab, " key=");
> @@ -1861,6 +1898,7 @@ void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk)
> up_read(&mm->mmap_sem);
> } else
> audit_log_format(ab, " exe=(null)");
> + audit_log_namespace_info(ab, tsk);
> audit_log_task_context(ab);
> }
> EXPORT_SYMBOL(audit_log_task_info);
> --
> 1.7.1
>
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