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Diffstat (limited to 'kernel/acct.c')
-rw-r--r--kernel/acct.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/kernel/acct.c b/kernel/acct.c
index 521dfa53cb99..91e1cfd734d2 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -58,6 +58,7 @@
#include <asm/uaccess.h>
#include <asm/div64.h>
#include <linux/blkdev.h> /* sector_div */
+#include <linux/pid_namespace.h>
/*
* These constants control the amount of freespace that suspend and
@@ -74,7 +75,7 @@ int acct_parm[3] = {4, 2, 30};
/*
* External references and all of the globals.
*/
-static void do_acct_process(struct file *);
+static void do_acct_process(struct pid_namespace *ns, struct file *);
/*
* This structure is used so that all the data protected by lock
@@ -86,6 +87,7 @@ struct acct_glbs {
volatile int active;
volatile int needcheck;
struct file *file;
+ struct pid_namespace *ns;
struct timer_list timer;
};
@@ -175,9 +177,11 @@ out:
static void acct_file_reopen(struct file *file)
{
struct file *old_acct = NULL;
+ struct pid_namespace *old_ns = NULL;
if (acct_globals.file) {
old_acct = acct_globals.file;
+ old_ns = acct_globals.ns;
del_timer(&acct_globals.timer);
acct_globals.active = 0;
acct_globals.needcheck = 0;
@@ -185,6 +189,7 @@ static void acct_file_reopen(struct file *file)
}
if (file) {
acct_globals.file = file;
+ acct_globals.ns = get_pid_ns(task_active_pid_ns(current));
acct_globals.needcheck = 0;
acct_globals.active = 1;
/* It's been deleted if it was used before so this is safe */
@@ -196,8 +201,9 @@ static void acct_file_reopen(struct file *file)
if (old_acct) {
mnt_unpin(old_acct->f_path.mnt);
spin_unlock(&acct_globals.lock);
- do_acct_process(old_acct);
+ do_acct_process(old_ns, old_acct);
filp_close(old_acct, NULL);
+ put_pid_ns(old_ns);
spin_lock(&acct_globals.lock);
}
}
@@ -419,7 +425,7 @@ static u32 encode_float(u64 value)
/*
* do_acct_process does all actual work. Caller holds the reference to file.
*/
-static void do_acct_process(struct file *file)
+static void do_acct_process(struct pid_namespace *ns, struct file *file)
{
struct pacct_struct *pacct = &current->signal->pacct;
acct_t ac;
@@ -481,8 +487,10 @@ static void do_acct_process(struct file *file)
ac.ac_gid16 = current->gid;
#endif
#if ACCT_VERSION==3
- ac.ac_pid = current->tgid;
- ac.ac_ppid = current->real_parent->tgid;
+ ac.ac_pid = task_tgid_nr_ns(current, ns);
+ rcu_read_lock();
+ ac.ac_ppid = task_tgid_nr_ns(rcu_dereference(current->real_parent), ns);
+ rcu_read_unlock();
#endif
spin_lock_irq(&current->sighand->siglock);
@@ -578,6 +586,7 @@ void acct_collect(long exitcode, int group_dead)
void acct_process(void)
{
struct file *file = NULL;
+ struct pid_namespace *ns;
/*
* accelerate the common fastpath:
@@ -592,8 +601,10 @@ void acct_process(void)
return;
}
get_file(file);
+ ns = get_pid_ns(acct_globals.ns);
spin_unlock(&acct_globals.lock);
- do_acct_process(file);
+ do_acct_process(ns, file);
fput(file);
+ put_pid_ns(ns);
}