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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
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12
fs/ioprio.c
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@@ -32,8 +32,8 @@ static int set_task_ioprio(struct task_struct *task, int ioprio)
int err;
struct io_context *ioc;
if (task->uid != current_euid() &&
task->uid != current_uid() && !capable(CAP_SYS_NICE))
if (task->cred->uid != current_euid() &&
task->cred->uid != current_uid() && !capable(CAP_SYS_NICE))
return -EPERM;
err = security_task_setioprio(task, ioprio);
@@ -123,7 +123,7 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
break;
case IOPRIO_WHO_USER:
if (!who)
user = current->user;
user = current->cred->user;
else
user = find_user(who);
@@ -131,7 +131,7 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
break;
do_each_thread(g, p) {
if (p->uid != who)
if (p->cred->uid != who)
continue;
ret = set_task_ioprio(p, ioprio);
if (ret)
@@ -216,7 +216,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
break;
case IOPRIO_WHO_USER:
if (!who)
user = current->user;
user = current->cred->user;
else
user = find_user(who);
@@ -224,7 +224,7 @@ asmlinkage long sys_ioprio_get(int which, int who)
break;
do_each_thread(g, p) {
if (p->uid != user->uid)
if (p->cred->uid != user->uid)
continue;
tmpio = get_task_ioprio(p);
if (tmpio < 0)