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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

6
kernel/futex.c
View file

@ -443,7 +443,8 @@ static struct task_struct * futex_find_get_task(pid_t pid)
rcu_read_lock();
p = find_task_by_vpid(pid);
if (!p || (euid != p->euid && euid != p->uid))
if (!p || (euid != p->cred->euid &&
euid != p->cred->uid))
p = ERR_PTR(-ESRCH);
else
get_task_struct(p);
@ -1846,7 +1847,8 @@ sys_get_robust_list(int pid, struct robust_list_head __user * __user *head_ptr,
if (!p)
goto err_unlock;
ret = -EPERM;
if (euid != p->euid && euid != p->uid &&
if (euid != p->cred->euid &&
euid != p->cred->uid &&
!capable(CAP_SYS_PTRACE))
goto err_unlock;
head = p->robust_list;