#ifndef SET_ENDIAN
# define SET_ENDIAN(a,b) (-EINVAL)
#endif
+#ifndef GET_TSC_CTL
+# define GET_TSC_CTL(a) (-EINVAL)
+#endif
+#ifndef SET_TSC_CTL
+# define SET_TSC_CTL(a) (-EINVAL)
+#endif
/*
* this is where the system-wide overflow UID and GID are defined, for
{
struct task_struct *p;
struct task_struct *group_leader = current->group_leader;
- int err = -EINVAL;
- struct pid_namespace *ns;
+ struct pid *pgrp;
+ int err;
if (!pid)
pid = task_pid_vnr(group_leader);
/* From this point forward we keep holding onto the tasklist lock
* so that our parent does not change from under us. -DaveM
*/
- ns = current->nsproxy->pid_ns;
-
write_lock_irq(&tasklist_lock);
err = -ESRCH;
- p = find_task_by_pid_ns(pid, ns);
+ p = find_task_by_vpid(pid);
if (!p)
goto out;
if (!thread_group_leader(p))
goto out;
- if (p->real_parent->tgid == group_leader->tgid) {
+ if (same_thread_group(p->real_parent, group_leader)) {
err = -EPERM;
if (task_session(p) != task_session(group_leader))
goto out;
if (p->signal->leader)
goto out;
+ pgrp = task_pid(p);
if (pgid != pid) {
struct task_struct *g;
- g = find_task_by_pid_type_ns(PIDTYPE_PGID, pgid, ns);
+ pgrp = find_vpid(pgid);
+ g = pid_task(pgrp, PIDTYPE_PGID);
if (!g || task_session(g) != task_session(group_leader))
goto out;
}
if (err)
goto out;
- if (task_pgrp_nr_ns(p, ns) != pgid) {
- struct pid *pid;
-
- detach_pid(p, PIDTYPE_PGID);
- pid = find_vpid(pgid);
- attach_pid(p, PIDTYPE_PGID, pid);
- set_task_pgrp(p, pid_nr(pid));
+ if (task_pgrp(p) != pgrp) {
+ change_pid(p, PIDTYPE_PGID, pgrp);
+ set_task_pgrp(p, pid_nr(pgrp));
}
err = 0;
asmlinkage long sys_getpgid(pid_t pid)
{
+ struct task_struct *p;
+ struct pid *grp;
+ int retval;
+
+ rcu_read_lock();
if (!pid)
- return task_pgrp_vnr(current);
+ grp = task_pgrp(current);
else {
- int retval;
- struct task_struct *p;
- struct pid_namespace *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_nr_ns(p, ns);
- }
- read_unlock(&tasklist_lock);
- return retval;
+ p = find_task_by_vpid(pid);
+ if (!p)
+ goto out;
+ grp = task_pgrp(p);
+ if (!grp)
+ goto out;
+
+ retval = security_task_getpgid(p);
+ if (retval)
+ goto out;
}
+ retval = pid_vnr(grp);
+out:
+ rcu_read_unlock();
+ return retval;
}
#ifdef __ARCH_WANT_SYS_GETPGRP
asmlinkage long sys_getpgrp(void)
{
- /* SMP - assuming writes are word atomic this is fine */
- return task_pgrp_vnr(current);
+ return sys_getpgid(0);
}
#endif
asmlinkage long sys_getsid(pid_t pid)
{
+ struct task_struct *p;
+ struct pid *sid;
+ int retval;
+
+ rcu_read_lock();
if (!pid)
- return task_session_vnr(current);
+ sid = task_session(current);
else {
- int retval;
- struct task_struct *p;
- struct pid_namespace *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_nr_ns(p, ns);
- }
- read_unlock(&tasklist_lock);
- return retval;
+ p = find_task_by_vpid(pid);
+ if (!p)
+ goto out;
+ sid = task_session(p);
+ if (!sid)
+ goto out;
+
+ retval = security_task_getsid(p);
+ if (retval)
+ goto out;
}
+ retval = pid_vnr(sid);
+out:
+ rcu_read_unlock();
+ return retval;
}
asmlinkage long sys_setsid(void)
{
struct task_struct *group_leader = current->group_leader;
- pid_t session;
+ struct pid *sid = task_pid(group_leader);
+ pid_t session = pid_vnr(sid);
int err = -EPERM;
write_lock_irq(&tasklist_lock);
-
/* Fail if I am already a session leader */
if (group_leader->signal->leader)
goto out;
- session = group_leader->pid;
/* Fail if a process group id already exists that equals the
* proposed session id.
- *
- * Don't check if session id == 1 because kernel threads use this
- * session id and so the check will always fail and make it so
- * init cannot successfully call setsid.
*/
- if (session > 1 && find_task_by_pid_type_ns(PIDTYPE_PGID,
- session, &init_pid_ns))
+ if (pid_task(sid, PIDTYPE_PGID))
goto out;
group_leader->signal->leader = 1;
- __set_special_pids(session, session);
+ __set_special_pids(sid);
spin_lock(&group_leader->sighand->siglock);
group_leader->signal->tty = NULL;
spin_unlock(&group_leader->sighand->siglock);
- err = task_pgrp_vnr(group_leader);
+ err = session;
out:
write_unlock_irq(&tasklist_lock);
return err;
*
*/
+static void accumulate_thread_rusage(struct task_struct *t, struct rusage *r,
+ cputime_t *utimep, cputime_t *stimep)
+{
+ *utimep = cputime_add(*utimep, t->utime);
+ *stimep = cputime_add(*stimep, t->stime);
+ r->ru_nvcsw += t->nvcsw;
+ r->ru_nivcsw += t->nivcsw;
+ r->ru_minflt += t->min_flt;
+ r->ru_majflt += t->maj_flt;
+ r->ru_inblock += task_io_get_inblock(t);
+ r->ru_oublock += task_io_get_oublock(t);
+}
+
static void k_getrusage(struct task_struct *p, int who, struct rusage *r)
{
struct task_struct *t;
memset((char *) r, 0, sizeof *r);
utime = stime = cputime_zero;
- rcu_read_lock();
- if (!lock_task_sighand(p, &flags)) {
- rcu_read_unlock();
- return;
+ if (who == RUSAGE_THREAD) {
+ accumulate_thread_rusage(p, r, &utime, &stime);
+ goto out;
}
+ if (!lock_task_sighand(p, &flags))
+ return;
+
switch (who) {
case RUSAGE_BOTH:
case RUSAGE_CHILDREN:
r->ru_oublock += p->signal->oublock;
t = p;
do {
- utime = cputime_add(utime, t->utime);
- stime = cputime_add(stime, t->stime);
- r->ru_nvcsw += t->nvcsw;
- r->ru_nivcsw += t->nivcsw;
- r->ru_minflt += t->min_flt;
- r->ru_majflt += t->maj_flt;
- r->ru_inblock += task_io_get_inblock(t);
- r->ru_oublock += task_io_get_oublock(t);
+ accumulate_thread_rusage(t, r, &utime, &stime);
t = next_thread(t);
} while (t != p);
break;
default:
BUG();
}
-
unlock_task_sighand(p, &flags);
- rcu_read_unlock();
+out:
cputime_to_timeval(utime, &r->ru_utime);
cputime_to_timeval(stime, &r->ru_stime);
}
asmlinkage long sys_getrusage(int who, struct rusage __user *ru)
{
- if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN)
+ if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN &&
+ who != RUSAGE_THREAD)
return -EINVAL;
return getrusage(current, who, ru);
}
asmlinkage long sys_prctl(int option, unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5)
{
- long error;
+ long uninitialized_var(error);
- error = security_task_prctl(option, arg2, arg3, arg4, arg5);
- if (error)
+ if (security_task_prctl(option, arg2, arg3, arg4, arg5, &error))
return error;
switch (option) {
error = -EINVAL;
break;
- case PR_GET_KEEPCAPS:
- if (current->keep_capabilities)
- error = 1;
- break;
- case PR_SET_KEEPCAPS:
- if (arg2 != 0 && arg2 != 1) {
- error = -EINVAL;
- break;
- }
- current->keep_capabilities = arg2;
- break;
case PR_SET_NAME: {
struct task_struct *me = current;
unsigned char ncomm[sizeof(me->comm)];
case PR_SET_SECCOMP:
error = prctl_set_seccomp(arg2);
break;
-
- case PR_CAPBSET_READ:
- if (!cap_valid(arg2))
- return -EINVAL;
- return !!cap_raised(current->cap_bset, arg2);
- case PR_CAPBSET_DROP:
-#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
- return cap_prctl_drop(arg2);
-#else
- return -EINVAL;
-#endif
-
+ case PR_GET_TSC:
+ error = GET_TSC_CTL(arg2);
+ break;
+ case PR_SET_TSC:
+ error = SET_TSC_CTL(arg2);
+ break;
default:
error = -EINVAL;
break;
projects / linux-2.6-omap-h63xx.git / blobdiff