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CRED: Separate task security context from task_struct

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Separate the task security context from task_struct.  At this point, the
security data is temporarily embedded in the task_struct with two pointers
pointing to it.

Note that the Alpha arch is altered as it refers to (E)UID and (E)GID in
entry.S via asm-offsets.

With comment fixes Signed-off-by: Marc Dionne <marc.c.dionne@gmail.com>

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
David Howells 2008-11-14 10:39:16 +11:00 • committed by James Morris
parent 15a2460ed0
commit b6dff3ec5e
63 changed files with 830 additions and 675 deletions
Download patch file Download diff file Expand all files Collapse all files

10
kernel/exit.c
View file

@ -160,7 +160,7 @@ void release_task(struct task_struct * p)
int zap_leader;
repeat:
tracehook_prepare_release_task(p);
atomic_dec(&p->user->processes);
atomic_dec(&p->cred->user->processes);
proc_flush_task(p);
write_lock_irq(&tasklist_lock);
tracehook_finish_release_task(p);
@ -1272,7 +1272,7 @@ static int wait_task_zombie(struct task_struct *p, int options,
return 0;
if (unlikely(options & WNOWAIT)) {
uid_t uid = p->uid;
uid_t uid = p->cred->uid;
int exit_code = p->exit_code;
int why, status;
@ -1393,7 +1393,7 @@ static int wait_task_zombie(struct task_struct *p, int options,
if (!retval && infop)
retval = put_user(pid, &infop->si_pid);
if (!retval && infop)
retval = put_user(p->uid, &infop->si_uid);
retval = put_user(p->cred->uid, &infop->si_uid);
if (!retval)
retval = pid;
@ -1458,7 +1458,7 @@ static int wait_task_stopped(int ptrace, struct task_struct *p,
if (!unlikely(options & WNOWAIT))
p->exit_code = 0;
uid = p->uid;
uid = p->cred->uid;
unlock_sig:
spin_unlock_irq(&p->sighand->siglock);
if (!exit_code)
@ -1535,7 +1535,7 @@ static int wait_task_continued(struct task_struct *p, int options,
spin_unlock_irq(&p->sighand->siglock);
pid = task_pid_vnr(p);
uid = p->uid;
uid = p->cred->uid;
get_task_struct(p);
read_unlock(&tasklist_lock);