1 files changed, 0 insertions, 357 deletions
diff --git a/lib/libc/sys/sem.c b/lib/libc/sys/sem.c
deleted file mode 100644
index e37eccd1e00f..000000000000
--- a/lib/libc/sys/sem.c
+++ /dev/null
@@ -1,357 +0,0 @@
-/*
- * Copyright (C) 2000 Jason Evans <jasone@freebsd.org>.
- * All rights reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice(s), this list of conditions and the following disclaimer as
- *    the first lines of this file unmodified other than the possible
- *    addition of one or more copyright notices.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice(s), this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#include "namespace.h"
-#include <stdlib.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <semaphore.h>
-#include <stdarg.h>
-#include <pthread.h>
-#include <sys/queue.h>
-#include <_semaphore.h>
-#include "un-namespace.h"
-
-#define _SEM_CHECK_VALIDITY(sem)		\
-	if ((*(sem))->magic != SEM_MAGIC) {	\
-		errno = EINVAL;			\
-		retval = -1;			\
-		goto RETURN;			\
-	}
-
-static sem_t sem_alloc(unsigned int value, semid_t semid, int system_sem);
-static void sem_free(sem_t sem);
-
-static LIST_HEAD(, sem) named_sems = LIST_HEAD_INITIALIZER(&named_sems);
-static pthread_mutex_t named_sems_mtx = PTHREAD_MUTEX_INITIALIZER;
-
-static void
-sem_free(sem_t sem)
-{
-
-	_pthread_mutex_destroy(&sem->lock);
-	_pthread_cond_destroy(&sem->gtzero);
-	sem->magic = 0;
-	free(sem);
-}
-
-static sem_t
-sem_alloc(unsigned int value, semid_t semid, int system_sem)
-{
-	sem_t sem;
-
-	if (value > SEM_VALUE_MAX) {
-		errno = EINVAL;
-		return (NULL);
-	}
-
-	sem = (sem_t)malloc(sizeof(struct sem));
-	if (sem == NULL) {
-		errno = ENOSPC;
-		return (NULL);
-	}
-
-	/*
-	 * Initialize the semaphore.
-	 */
-	if (_pthread_mutex_init(&sem->lock, NULL) != 0) {
-		free(sem);
-		errno = ENOSPC;
-		return (NULL);
-	}
-
-	if (_pthread_cond_init(&sem->gtzero, NULL) != 0) {
-		_pthread_mutex_destroy(&sem->lock);
-		free(sem);
-		errno = ENOSPC;
-		return (NULL);
-	}
-	
-	sem->count = (u_int32_t)value;
-	sem->nwaiters = 0;
-	sem->magic = SEM_MAGIC;
-	sem->semid = semid;
-	sem->syssem = system_sem;
-	return (sem);
-}
-
-int
-sem_init(sem_t *sem, int pshared, unsigned int value)
-{
-	int	retval, got_system_sem;
-	semid_t	semid;
-
-	got_system_sem = 0;
-	semid = SEM_USER;
-	/*
-	 * Range check the arguments.
-	 */
-	if (pshared != 0) {
-		retval = ksem_init(&semid, value);
-		if (retval == -1)
-			goto RETURN;
-		got_system_sem = 1;
-	}
-
-	(*sem) = sem_alloc(value, semid, got_system_sem);
-	if ((*sem) == NULL)
-		retval = -1;
-	else
-		retval = 0;
-  RETURN:
-	if (retval != 0 && got_system_sem)
-		ksem_destroy(semid);
-	return retval;
-}
-
-int
-sem_destroy(sem_t *sem)
-{
-	int	retval;
-	
-	_SEM_CHECK_VALIDITY(sem);
-
-	_pthread_mutex_lock(&(*sem)->lock);
-	/*
-	 * If this is a system semaphore let the kernel track it otherwise
-	 * make sure there are no waiters.
-	 */
-	if ((*sem)->syssem != 0) {
-		retval = ksem_destroy((*sem)->semid);
-		if (retval == -1) {
-			_pthread_mutex_unlock(&(*sem)->lock);
-			goto RETURN;
-		}
-	} else if ((*sem)->nwaiters > 0) {
-		_pthread_mutex_unlock(&(*sem)->lock);
-		errno = EBUSY;
-		retval = -1;
-		goto RETURN;
-	}
-	_pthread_mutex_unlock(&(*sem)->lock);
-
-	sem_free(*sem);	
-
-	retval = 0;
-  RETURN:
-	return retval;
-}
-
-sem_t *
-sem_open(const char *name, int oflag, ...)
-{
-	sem_t *sem;
-	sem_t s;
-	semid_t semid;
-	mode_t mode;
-	unsigned int value;
-
-	mode = 0;
-	value = 0;
-
-	if ((oflag & O_CREAT) != 0) {
-		va_list ap;
-
-		va_start(ap, oflag);
-		mode = va_arg(ap, int);
-		value = va_arg(ap, unsigned int);
-		va_end(ap);
-	}
-	/*
-	 * we can be lazy and let the kernel handle the "oflag",
-	 * we'll just merge duplicate IDs into our list.
-	 */
-	if (ksem_open(&semid, name, oflag, mode, value) == -1)
-		return (SEM_FAILED);
-	/*
-	 * search for a duplicate ID, we must return the same sem_t *
-	 * if we locate one.
-	 */
-	_pthread_mutex_lock(&named_sems_mtx);
-	LIST_FOREACH(s, &named_sems, entry) {
-	    if (s->semid == semid) {
-		    _pthread_mutex_unlock(&named_sems_mtx);
-		    return (s->backpointer);
-	    }
-	}
-	sem = (sem_t *)malloc(sizeof(*sem));
-	if (sem == NULL)
-		goto err;
-	*sem = sem_alloc(value, semid, 1);
-	if ((*sem) == NULL)
-		goto err;
-	LIST_INSERT_HEAD(&named_sems, *sem, entry);
-	(*sem)->backpointer = sem;
-	_pthread_mutex_unlock(&named_sems_mtx);
-	return (sem);
-err:
-	_pthread_mutex_unlock(&named_sems_mtx);
-	ksem_close(semid);
-	if (sem != NULL) {
-		if (*sem != NULL)
-			sem_free(*sem);
-		else
-			errno = ENOSPC;
-		free(sem);
-	} else {
-		errno = ENOSPC;
-	}
-	return (SEM_FAILED);
-}
-
-int
-sem_close(sem_t *sem)
-{
-
-	if ((*sem)->syssem == 0) {
-		errno = EINVAL;
-		return (-1);
-	}
-	_pthread_mutex_lock(&named_sems_mtx);
-	if (ksem_close((*sem)->semid) == -1) {
-		_pthread_mutex_unlock(&named_sems_mtx);
-		return (-1);
-	}
-	LIST_REMOVE((*sem), entry);
-	_pthread_mutex_unlock(&named_sems_mtx);
-	sem_free(*sem);
-	free(sem);
-	return (0);
-}
-
-int
-sem_unlink(const char *name)
-{
-
-	return (ksem_unlink(name));
-}
-
-int
-sem_wait(sem_t *sem)
-{
-	int	retval;
-
-	_SEM_CHECK_VALIDITY(sem);
-
-	if ((*sem)->syssem != 0) {
-		retval = ksem_wait((*sem)->semid);
-		goto RETURN;
-	}
-
-	_pthread_mutex_lock(&(*sem)->lock);
-
-	while ((*sem)->count == 0) {
-		(*sem)->nwaiters++;
-		_pthread_cond_wait(&(*sem)->gtzero, &(*sem)->lock);
-		(*sem)->nwaiters--;
-	}
-	(*sem)->count--;
-
-	_pthread_mutex_unlock(&(*sem)->lock);
-
-	retval = 0;
-  RETURN:
-	return retval;
-}
-
-int
-sem_trywait(sem_t *sem)
-{
-	int	retval;
-
-	_SEM_CHECK_VALIDITY(sem);
-
-	if ((*sem)->syssem != 0) {
-		retval = ksem_trywait((*sem)->semid);
-		goto RETURN;
-	}
-
-	_pthread_mutex_lock(&(*sem)->lock);
-
-	if ((*sem)->count > 0) {
-		(*sem)->count--;
-		retval = 0;
-	} else {
-		errno = EAGAIN;
-		retval = -1;
-	}
-	
-	_pthread_mutex_unlock(&(*sem)->lock);
-
-  RETURN:
-	return retval;
-}
-
-int
-sem_post(sem_t *sem)
-{
-	int	retval;
-
-	_SEM_CHECK_VALIDITY(sem);
-
-	if ((*sem)->syssem != 0) {
-		retval = ksem_post((*sem)->semid);
-		goto RETURN;
-	}
-
-	_pthread_mutex_lock(&(*sem)->lock);
-
-	(*sem)->count++;
-	if ((*sem)->nwaiters > 0)
-		_pthread_cond_signal(&(*sem)->gtzero);
-
-	_pthread_mutex_unlock(&(*sem)->lock);
-
-	retval = 0;
-  RETURN:
-	return retval;
-}
-
-int
-sem_getvalue(sem_t * __restrict sem, int * __restrict sval)
-{
-	int	retval;
-
-	_SEM_CHECK_VALIDITY(sem);
-
-	if ((*sem)->syssem != 0) {
-		retval = ksem_getvalue((*sem)->semid, sval);
-		goto RETURN;
-	}
-
-	_pthread_mutex_lock(&(*sem)->lock);
-	*sval = (int)(*sem)->count;
-	_pthread_mutex_unlock(&(*sem)->lock);
-
-	retval = 0;
-  RETURN:
-	return retval;
-}