/*
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* Written by Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _COBALT_POSIX_SEM_H
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#define _COBALT_POSIX_SEM_H
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#include <linux/kernel.h>
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#include <linux/fcntl.h>
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#include <cobalt/kernel/thread.h>
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#include <cobalt/kernel/registry.h>
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#include <xenomai/posix/syscall.h>
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#include <xenomai/posix/process.h>
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struct cobalt_process;
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struct filename;
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struct cobalt_sem {
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unsigned int magic;
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struct xnsynch synchbase;
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struct cobalt_sem_state *state;
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int flags;
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unsigned int refs;
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struct filename *pathname;
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struct cobalt_resnode resnode;
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};
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/* Copied from Linuxthreads semaphore.h. */
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struct _sem_fastlock
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{
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long int __status;
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int __spinlock;
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};
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typedef struct
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{
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struct _sem_fastlock __sem_lock;
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int __sem_value;
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long __sem_waiting;
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} sem_t;
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#include <cobalt/uapi/sem.h>
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#define SEM_VALUE_MAX (INT_MAX)
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#define SEM_FAILED NULL
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#define SEM_NAMED 0x80000000
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struct cobalt_sem_shadow __user *
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__cobalt_sem_open(struct cobalt_sem_shadow __user *usm,
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const char __user *u_name,
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int oflags, mode_t mode, unsigned int value);
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int __cobalt_sem_timedwait(struct cobalt_sem_shadow __user *u_sem,
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const struct timespec64 *ts);
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int __cobalt_sem_timedwait64(struct cobalt_sem_shadow __user *u_sem,
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const struct __kernel_timespec __user *u_ts);
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int __cobalt_sem_destroy(xnhandle_t handle);
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void cobalt_nsem_reclaim(struct cobalt_process *process);
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struct cobalt_sem *
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__cobalt_sem_init(const char *name, struct cobalt_sem_shadow *sem,
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int flags, unsigned value);
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void __cobalt_sem_shadow_init(struct cobalt_sem *sem, __u32 magic,
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struct cobalt_sem_shadow *sm);
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COBALT_SYSCALL_DECL(sem_init,
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(struct cobalt_sem_shadow __user *u_sem,
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int flags, unsigned value));
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COBALT_SYSCALL_DECL(sem_post,
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(struct cobalt_sem_shadow __user *u_sem));
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COBALT_SYSCALL_DECL(sem_wait,
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(struct cobalt_sem_shadow __user *u_sem));
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COBALT_SYSCALL_DECL(sem_timedwait,
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(struct cobalt_sem_shadow __user *u_sem,
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const struct __user_old_timespec __user *u_ts));
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COBALT_SYSCALL_DECL(sem_timedwait64,
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(struct cobalt_sem_shadow __user *u_sem,
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const struct __kernel_timespec __user *u_ts));
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COBALT_SYSCALL_DECL(sem_trywait,
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(struct cobalt_sem_shadow __user *u_sem));
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COBALT_SYSCALL_DECL(sem_getvalue,
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(struct cobalt_sem_shadow __user *u_sem,
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int __user *u_sval));
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COBALT_SYSCALL_DECL(sem_destroy,
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(struct cobalt_sem_shadow __user *u_sem));
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COBALT_SYSCALL_DECL(sem_open,
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(struct cobalt_sem_shadow __user *__user *u_addrp,
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const char __user *u_name,
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int oflags, mode_t mode, unsigned int value));
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COBALT_SYSCALL_DECL(sem_close,
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(struct cobalt_sem_shadow __user *usm));
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COBALT_SYSCALL_DECL(sem_unlink, (const char __user *u_name));
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COBALT_SYSCALL_DECL(sem_broadcast_np,
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(struct cobalt_sem_shadow __user *u_sem));
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COBALT_SYSCALL_DECL(sem_inquire,
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(struct cobalt_sem_shadow __user *u_sem,
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struct cobalt_sem_info __user *u_info,
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pid_t __user *u_waitlist,
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size_t waitsz));
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void cobalt_sem_reclaim(struct cobalt_resnode *node,
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spl_t s);
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#endif /* !_COBALT_POSIX_SEM_H */
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