When calling the sys_getsid/sys_getpgid for task, that actually
lives in another namespace (sub-namespace) the return value should
be not the id as this task sees it, but the id as the caller does.
Signed-off-by: Pavel Emelyanov <[email protected]>
---
kernel/sys.c | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/kernel/sys.c b/kernel/sys.c
index c7c4fa4..c827186 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -993,16 +995,17 @@ asmlinkage long sys_getpgid(pid_t pid)
else {
int retval;
struct task_struct *p;
+ struct pid_namespace *ns;
- read_lock(&tasklist_lock);
- p = find_task_by_pid_ns(pid,
- current->nsproxy->pid_ns);
+ ns = current->nsproxy->pid_ns;
+ read_lock(&tasklist_lock);
+ p = find_task_by_pid_ns(pid, ns);
retval = -ESRCH;
if (p) {
retval = security_task_getpgid(p);
if (!retval)
- retval = task_pgrp_vnr(p);
+ retval = task_pgrp_nr_ns(p, ns);
}
read_unlock(&tasklist_lock);
return retval;
@@ -1026,16 +1029,17 @@ asmlinkage long sys_getsid(pid_t pid)
else {
int retval;
struct task_struct *p;
+ struct pid_namespace *ns;
- read_lock(&tasklist_lock);
- p = find_task_by_pid_ns(pid,
- current->nsproxy->pid_ns);
+ ns = current->nsproxy->pid_ns;
+ read_lock(&tasklist_lock);
+ p = find_task_by_pid_ns(pid, ns);
retval = -ESRCH;
if (p) {
retval = security_task_getsid(p);
if (!retval)
- retval = task_session_vnr(p);
+ retval = task_session_nr_ns(p, ns);
}
read_unlock(&tasklist_lock);
return retval;
-
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