userns: Convert setting and getting uid and gid system calls to use kuid and kgid
Convert setregid, setgid, setreuid, setuid,
setresuid, getresuid, setresgid, getresgid, setfsuid, setfsgid,
getuid, geteuid, getgid, getegid,
waitpid, waitid, wait4.
Convert userspace uids and gids into kuids and kgids before
being placed on struct cred. Convert struct cred kuids and
kgids into userspace uids and gids when returning them.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/kernel/exit.c b/kernel/exit.c
index d8bd3b42..789e3c5 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1214,7 +1214,7 @@
unsigned long state;
int retval, status, traced;
pid_t pid = task_pid_vnr(p);
- uid_t uid = __task_cred(p)->uid;
+ uid_t uid = from_kuid_munged(current_user_ns(), __task_cred(p)->uid);
struct siginfo __user *infop;
if (!likely(wo->wo_flags & WEXITED))
@@ -1427,7 +1427,7 @@
if (!unlikely(wo->wo_flags & WNOWAIT))
*p_code = 0;
- uid = task_uid(p);
+ uid = from_kuid_munged(current_user_ns(), __task_cred(p)->uid);
unlock_sig:
spin_unlock_irq(&p->sighand->siglock);
if (!exit_code)
@@ -1500,7 +1500,7 @@
}
if (!unlikely(wo->wo_flags & WNOWAIT))
p->signal->flags &= ~SIGNAL_STOP_CONTINUED;
- uid = task_uid(p);
+ uid = from_kuid_munged(current_user_ns(), __task_cred(p)->uid);
spin_unlock_irq(&p->sighand->siglock);
pid = task_pid_vnr(p);