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#ifndef _HACK_SCHED_H
#define _HACK_SCHED_H
#include <sys/signal.h>
#include <sys/time.h>
#include <mach.h>
#include <hurd/hurd_types.h>
#include <limits.h>
#include <assert.h>
#include <pthread.h>
#include <errno.h>
#include "mapped-time.h"
#include <linux/binfmts.h>
#include <linux/personality.h>
#include <linux/tasks.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/times.h>
#include <linux/timex.h>
#include <asm/system.h>
#if 0
#include <asm/semaphore.h>
#include <asm/page.h>
#include <linux/smp.h>
#include <linux/tty.h>
#include <linux/sem.h>
#include <linux/signal.h>
#include <linux/securebits.h>
#endif
#include <linux/kernel.h>
#include <linux/net.h>
#include <linux/wait.h>
#include <linux/timer.h>
#define jiffies (fetch_jiffies ())
#define current (¤t_contents)
extern struct task_struct current_contents;
struct task_struct
{
uid_t pgrp, pid;
int flags;
int timeout;
int signal;
int blocked;
int state, policy;
int isroot;
char *comm;
struct wait_queue **next_wait;
};
static inline void
prepare_current (int isroot)
{
current->signal = 0;
current->isroot = isroot;
/* All other members are constant zero and ignored. */
}
#define become_task(user) prepare_current ((user)->isroot)
#define become_task_protid(protid) prepare_current ((protid)->isroot)
#define signal_pending(current) ((current)->signal)
/* FLAGS in task_struct's. */
#define PF_EXITING 1
/* STATE in task_struct's. */
#define TASK_INTERRUPTIBLE 0
#define TASK_RUNNING 0
/* policy in task_struct's. */
#define SCHED_YIELD 0
struct semaphore { };
static inline int
suser ()
{
return current->isroot;
};
static inline int
capable(int cap)
{
return current->isroot;
}
extern pthread_mutex_t global_lock;
static inline int
interruptible_sleep_on_timeout (struct wait_queue **p, struct timespec *tsp)
{
pthread_cond_t **condp = (void *) p, *c;
int isroot;
struct wait_queue **next_wait;
error_t err;
c = *condp;
if (c == 0)
{
c = malloc (sizeof **condp);
assert (c);
pthread_cond_init (c, NULL);
*condp = c;
}
isroot = current->isroot; /* This is our context that needs switched. */
next_wait = current->next_wait; /* This too, for multiple schedule calls. */
current->next_wait = 0;
err = pthread_hurd_cond_timedwait_np(c, &global_lock, tsp);
if (err == EINTR)
current->signal = 1; /* We got cancelled, mark it for later. */
current->isroot = isroot; /* Switch back to our context. */
current->next_wait = next_wait;
return (err == ETIMEDOUT);
}
static inline void
wake_up_interruptible (struct wait_queue **p)
{
pthread_cond_t **condp = (void *) p, *c = *condp;
if (c)
pthread_cond_broadcast (c);
}
#define wake_up wake_up_interruptible
static inline void
add_wait_queue(struct wait_queue ** p, struct wait_queue * wait)
{
assert (current->next_wait == 0);
current->next_wait = p;
}
static inline void
remove_wait_queue(struct wait_queue ** p, struct wait_queue * wait)
{
assert (current->next_wait == p);
current->next_wait = 0;
}
static inline void
schedule (void)
{
assert (current->next_wait);
interruptible_sleep_on_timeout (current->next_wait, NULL);
}
static inline void
process_schedule_timeout (unsigned long data)
{
struct wait_queue **sleep = (struct wait_queue **) data;
wake_up_interruptible (sleep);
}
static inline long
schedule_timeout (long timeout)
{
long expire = timeout + jiffies;
struct timer_list timer;
static struct wait_queue *sleep = 0; /* See comment in wait.h why this suffices. */
/* TODO: but free it !! */
init_timer (&timer);
timer.expires = expire;
timer.data = (unsigned long) &sleep;
timer.function = process_schedule_timeout;
add_timer (&timer);
interruptible_sleep_on_timeout (&sleep, NULL);
if (signal_pending (current))
{
/* We were canceled. */
del_timer (&timer);
expire -= jiffies;
if (expire >= 0)
return expire;
else
return 0;
}
/* It may happen that we get woken without a signal. Noticed notably during
rsyslog testsuite. Make sure we don't leave our timer in. */
del_timer(&timer);
return 0;
}
#define MAX_SCHEDULE_TIMEOUT LONG_MAX
/* This function is used only to send SIGPIPE to the current
task. In all such cases, EPIPE is returned anyhow. In the
Hurd, servers are not responsible for SIGPIPE; the library
does that itself upon receiving EPIPE. So we can just
NOP such calls. */
static inline int
send_sig (u_long signo, struct task_struct *task, int priv)
{
assert (signo == SIGPIPE);
assert (task == current);
return 0;
}
#endif
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