This commit was manufactured by cvs2svn to create tag 'cygwin-pre-user-db'.cygwin-pre-user-db

Sprout from cygwin-1_7_29-release-branchpoint 2014-02-18 19:58:40 UTC cvs2svn 'This commit was manufactured by cvs2svn to create branch 'cygwin-1_7_29' Cherrypick from master 2014-02-08 22:25:11 UTC Corinna Vinschen <corinna@vinschen.de> 'Fix ChangeLog': winsup/cygwin/ChangeLog winsup/cygwin/miscfuncs.cc winsup/cygwin/miscfuncs.h winsup/cygwin/mount.cc Delete: winsup/COPYING winsup/CYGWIN_LICENSE winsup/ChangeLog winsup/Makefile.common winsup/Makefile.in winsup/README winsup/acinclude.m4 winsup/aclocal.m4 winsup/autogen.sh winsup/c++wrap winsup/ccwrap winsup/config.guess winsup/config.sub winsup/configure winsup/configure.ac winsup/configure.cygwin winsup/cygserver/ChangeLog winsup/cygserver/ChangeLog.64bit winsup/cygserver/Makefile.in winsup/cygserver/README winsup/cygserver/aclocal.m4 winsup/cygserver/autogen.sh winsup/cygserver/bsd_helper.cc winsup/cygserver/bsd_helper.h winsup/cygserver/bsd_log.cc winsup/cygserver/bsd_log.h winsup/cygserver/bsd_mutex.cc winsup/cygserver/bsd_mutex.h 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author: cvs2svn <> 2014-02-18 19:58:41 +0000
committer: cvs2svn <> 2014-02-18 19:58:41 +0000
commit: b5279ecc51ff751ccd052fbb7c20efd529575f7e (patch)
tree: 64141e96a5d64ae59fb7f410270e4daa41878a03 /winsup/cygserver/sysv_sem.cc
parent: a2a48cb593a9b3cc3f5c63c39f52c32db31cec50 (diff)
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1 files changed, 0 insertions, 1389 deletions
diff --git a/winsup/cygserver/sysv_sem.cc b/winsup/cygserver/sysv_sem.cc
deleted file mode 100644
index e7ba48b61..000000000
--- a/winsup/cygserver/sysv_sem.cc
+++ /dev/null
@@ -1,1389 +0,0 @@
-/*
- * Implementation of SVID semaphores
- *
- * Author:  Daniel Boulet
- *
- * This software is provided ``AS IS'' without any warranties of any kind.
- */
-
-/*
- * This file is heavily changed to become part of Cygwin's cygserver.
- */
-
-#ifdef __OUTSIDE_CYGWIN__
-#include "woutsup.h"
-#include <stdio.h>
-#include <sys/cygwin.h>
-#include <sys/cdefs.h>
-#ifndef __FBSDID
-#define __FBSDID(s)	const char version[] = (s)
-#endif
-__FBSDID("$FreeBSD: /repoman/r/ncvs/src/sys/kern/sysv_sem.c,v 1.70 2004/05/30 20:34:58 phk Exp $");
-/* CV, 2006-01-09: Inspected upstream up to version 1.78. */
-
-#define _KERNEL 1
-#define __BSD_VISIBLE 1
-#include <sys/types.h>
-#include <sys/ipc.h>
-
-#include <sys/param.h>
-#include <sys/sysproto.h>
-#include <sys/lock.h>
-#include <sys/sem.h>
-#include <sys/queue.h>
-#include <malloc.h>
-#include <errno.h>
-#include <time.h>
-#include "cygserver.h"
-#include "process.h"
-#include "cygserver_ipc.h"
-#include <sys/smallprint.h>
-
-#ifdef __CYGWIN__
-#define __semctl semctl
-#define __semctl_args semctl_args
-#define SEM_DEBUG
-#endif /* __CYGWIN__ */
-
-#ifdef SEM_DEBUG
-#define DPRINTF(a)	debug_printf a
-#else
-#define DPRINTF(a)
-#endif
-
-static int semvalid(int semid, struct semid_ds *semaptr);
-
-static struct sem_undo *semu_alloc(struct thread *td);
-static int semundo_adjust(struct thread *td, struct sem_undo **supptr,
-		int semid, int semnum, int adjval);
-static void semundo_clear(int semid, int semnum, struct thread *td);
-
-#ifndef _SYS_SYSPROTO_H_
-struct __semctl_args;
-int __semctl(struct thread *td, struct __semctl_args *uap);
-struct semget_args;
-int semget(struct thread *td, struct semget_args *uap);
-struct semop_args;
-int semop(struct thread *td, struct semop_args *uap);
-#endif
-
-#ifndef __CYGWIN__
-/* XXX casting to (sy_call_t *) is bogus, as usual. */
-static sy_call_t *semcalls[] = {
-	(sy_call_t *)__semctl, (sy_call_t *)semget,
-	(sy_call_t *)semop
-};
-#endif
-
-static struct mtx	sem_mtx;	/* semaphore global lock */
-static int	semtots = 0;
-static int	semtot = 0;
-static struct semid_ds *sema;	/* semaphore id pool */
-static struct mtx *sema_mtx;	/* semaphore id pool mutexes*/
-static struct sem *sem;		/* semaphore pool */
-static SLIST_HEAD(, sem_undo) semu_list;	/* list of active undo structures */
-static int	*semu;		/* undo structure pool */
-#ifndef __CYGWIN__
-static eventhandler_tag semexit_tag;
-#endif /* __CYGWIN__ */
-
-#define SEMUNDO_MTX		sem_mtx
-#define SEMUNDO_LOCK()		mtx_lock(&SEMUNDO_MTX);
-#define SEMUNDO_HOOKLOCK()	_mtx_lock(&SEMUNDO_MTX, p->winpid, __FILE__, __LINE__);
-#define SEMUNDO_UNLOCK()	mtx_unlock(&SEMUNDO_MTX);
-#define SEMUNDO_LOCKASSERT(how,pid)	mtx_assert(&SEMUNDO_MTX, (how), (pid));
-
-struct sem {
-	u_short	semval;		/* semaphore value */
-	pid_t	sempid;		/* pid of last operation */
-	u_short	semncnt;	/* # awaiting semval > cval */
-	u_short	semzcnt;	/* # awaiting semval = 0 */
-};
-
-/*
- * Undo structure (one per process)
- */
-struct undo {
-	short	un_adjval;	/* adjust on exit values */
-	short	un_num;		/* semaphore # */
-	int	un_id;		/* semid */
-} un_ent[1];			/* undo entries */
-
-struct sem_undo {
-	SLIST_ENTRY(sem_undo) un_next;	/* ptr to next active undo structure */
-#ifdef __CYGWIN__
-	DWORD	un_proc;		/* owner of this structure */
-#else
-	struct	proc *un_proc;		/* owner of this structure */
-#endif
-	short	un_cnt;			/* # of active entries */
-	struct undo un_ent[1];		/* undo entries */
-};
-
-/*
- * Configuration parameters
- */
-#ifndef SEMMNI
-#define SEMMNI	10		/* # of semaphore identifiers */
-#endif
-#ifndef SEMMNS
-#define SEMMNS	60		/* # of semaphores in system */
-#endif
-#ifndef SEMUME
-#define SEMUME	10		/* max # of undo entries per process */
-#endif
-#ifndef SEMMNU
-#define SEMMNU	30		/* # of undo structures in system */
-#endif
-
-/* shouldn't need tuning */
-#ifndef SEMMAP
-#define SEMMAP	30		/* # of entries in semaphore map */
-#endif
-#ifndef SEMMSL
-#define SEMMSL	SEMMNS		/* max # of semaphores per id */
-#endif
-#ifndef SEMOPM
-#define SEMOPM	100		/* max # of operations per semop call */
-#endif
-
-#ifndef SEMVMX
-#define SEMVMX	32767		/* semaphore maximum value */
-#endif
-#ifndef SEMAEM
-#define SEMAEM	16384		/* adjust on exit max value */
-#endif
-
-#ifdef __CYGWIN__
-/* gcc 3.4 defines a new offsetof which is different for C++.  Since this
-   file is just a derived plain-C file, we need to revert to the plain-C
-   definition of offsetof. */
-#ifdef offsetof
-#undef offsetof
-#endif
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-#endif /* __CYGWIN__ */
-/*
- * Due to the way semaphore memory is allocated, we have to ensure that
- * SEMUSZ is properly aligned.
- */
-
-#define SEM_ALIGN(bytes) (((bytes) + (sizeof(long) - 1)) & ~(sizeof(long) - 1))
-
-/* actual size of an undo structure */
-#define SEMUSZ	SEM_ALIGN(offsetof(struct sem_undo, un_ent[SEMUME]))
-
-/*
- * Macro to find a particular sem_undo vector
- */
-#define SEMU(ix) \
-	((struct sem_undo *)(((intptr_t)semu)+ix * seminfo.semusz))
-
-/*
- * semaphore info struct
- */
-struct seminfo seminfo = {
-                SEMMNI,         /* # of semaphore identifiers */
-                SEMMNS,         /* # of semaphores in system */
-                SEMMSL,         /* max # of semaphores per id */
-                SEMOPM,         /* max # of operations per semop call */
-                SEMMNU,         /* # of undo structures in system */
-                SEMUME,         /* max # of undo entries per process */
-                SEMVMX,         /* semaphore maximum value */
-                SEMAEM,         /* adjust on exit max value */
-                SEMMAP,         /* # of entries in semaphore map */
-                SEMUSZ          /* size in bytes of undo structure */
-};
-
-#ifndef __CYGWIN__
-SYSCTL_DECL(_kern_ipc);
-SYSCTL_INT(_kern_ipc, OID_AUTO, semmap, CTLFLAG_RW, &seminfo.semmap, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semmni, CTLFLAG_RDTUN, &seminfo.semmni, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semmns, CTLFLAG_RDTUN, &seminfo.semmns, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semmnu, CTLFLAG_RDTUN, &seminfo.semmnu, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semmsl, CTLFLAG_RW, &seminfo.semmsl, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semopm, CTLFLAG_RDTUN, &seminfo.semopm, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semume, CTLFLAG_RDTUN, &seminfo.semume, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semusz, CTLFLAG_RDTUN, &seminfo.semusz, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semvmx, CTLFLAG_RW, &seminfo.semvmx, 0, "");
-SYSCTL_INT(_kern_ipc, OID_AUTO, semaem, CTLFLAG_RW, &seminfo.semaem, 0, "");
-SYSCTL_PROC(_kern_ipc, OID_AUTO, sema, CTLFLAG_RD,
-    NULL, 0, sysctl_sema, "", "");
-#endif /* __CYGWIN__ */
-
-void
-seminit(void)
-{
-	int i;
-
-	TUNABLE_INT_FETCH("kern.ipc.semmap", &seminfo.semmap);
-	TUNABLE_INT_FETCH("kern.ipc.semmni", &seminfo.semmni);
-	TUNABLE_INT_FETCH("kern.ipc.semmns", &seminfo.semmns);
-	TUNABLE_INT_FETCH("kern.ipc.semmnu", &seminfo.semmnu);
-	TUNABLE_INT_FETCH("kern.ipc.semmsl", &seminfo.semmsl);
-	TUNABLE_INT_FETCH("kern.ipc.semopm", &seminfo.semopm);
-	TUNABLE_INT_FETCH("kern.ipc.semume", &seminfo.semume);
-	TUNABLE_INT_FETCH("kern.ipc.semusz", &seminfo.semusz);
-	TUNABLE_INT_FETCH("kern.ipc.semvmx", &seminfo.semvmx);
-	TUNABLE_INT_FETCH("kern.ipc.semaem", &seminfo.semaem);
-
-#ifdef __CYGWIN__
-	/* It's too dangerous a setting to leave it alone. 
-	   Keep that clean here. */
-	seminfo.semusz = SEM_ALIGN(offsetof(struct sem_undo,
-					    un_ent[seminfo.semume]));
-#endif /* __CYGWIN__ */
-
-	sem = (struct sem *) sys_malloc(sizeof(struct sem) * seminfo.semmns, M_SEM, M_WAITOK);
-	sema = (struct semid_ds *) sys_malloc(sizeof(struct semid_ds) * seminfo.semmni, M_SEM,
-	    M_WAITOK);
-	sema_mtx = (struct mtx *) sys_malloc(sizeof(struct mtx) * seminfo.semmni, M_SEM,
-	    M_WAITOK | M_ZERO);
-	semu = (int *) sys_malloc(seminfo.semmnu * seminfo.semusz, M_SEM, M_WAITOK);
-
-	for (i = 0; i < seminfo.semmni; i++) {
-		sema[i].sem_base = 0;
-		sema[i].sem_perm.mode = 0;
-		sema[i].sem_perm.seq = 0;
-	}
-	for (i = 0; i < seminfo.semmni; i++)
-	{
-		char *buf = (char *) sys_malloc(16, M_SEM, M_WAITOK);
-		snprintf(buf, 16, "semid[%d]", i);
-		mtx_init(&sema_mtx[i], buf, NULL, MTX_DEF);
-	}
-	for (i = 0; i < seminfo.semmnu; i++) {
-		struct sem_undo *suptr = SEMU(i);
-#ifdef __CYGWIN__
-		suptr->un_proc = 0;
-#else
-		suptr->un_proc = NULL;
-#endif
-	}
-	SLIST_INIT(&semu_list);
-	mtx_init(&sem_mtx, "sem", NULL, MTX_DEF);
-#ifndef __CYGWIN__
-	semexit_tag = EVENTHANDLER_REGISTER(process_exit, semexit_myhook, NULL,
-	    EVENTHANDLER_PRI_ANY);
-#endif /* __CYGWIN__ */
-}
-
-int
-semunload(void)
-{
-#ifndef __CYGWIN__	/* Would result in being unable to shutdown the
-			   server gracefully. */
-	if (semtot != 0)
-		return (EBUSY);
-
-	EVENTHANDLER_DEREGISTER(process_exit, semexit_tag);
-#endif /* __CYGWIN__ */
-	sys_free(sem, M_SEM);
-	sys_free(sema, M_SEM);
-	sys_free(semu, M_SEM);
-	for (int i = 0; i < seminfo.semmni; i++) {
-		sys_free((void *) sema_mtx[i].name, M_SEM);
-		mtx_destroy(&sema_mtx[i]);
-	}
-	mtx_destroy(&sem_mtx);
-	return (0);
-}
-
-#ifndef __CYGWIN__
-static int
-sysvsem_modload(struct module *module, int cmd, void *arg)
-{
-	int error = 0;
-
-	switch (cmd) {
-	case MOD_LOAD:
-		seminit();
-		break;
-	case MOD_UNLOAD:
-		error = semunload();
-		break;
-	case MOD_SHUTDOWN:
-		break;
-	default:
-		error = EINVAL;
-		break;
-	}
-	return (error);
-}
-
-static moduledata_t sysvsem_mod = {
-	"sysvsem",
-	&sysvsem_modload,
-	NULL
-};
-
-SYSCALL_MODULE_HELPER(semsys);
-SYSCALL_MODULE_HELPER(__semctl);
-SYSCALL_MODULE_HELPER(semget);
-SYSCALL_MODULE_HELPER(semop);
-
-DECLARE_MODULE(sysvsem, sysvsem_mod,
-	SI_SUB_SYSV_SEM, SI_ORDER_FIRST);
-MODULE_VERSION(sysvsem, 1);
-
-/*
- * Entry point for all SEM calls
- *
- * MPSAFE
- */
-int
-semsys(td, uap)
-	struct thread *td;
-	/* XXX actually varargs. */
-	struct semsys_args /* {
-		int	which;
-		int	a2;
-		int	a3;
-		int	a4;
-		int	a5;
-	} */ *uap;
-{
-	int error;
-
-	if (!jail_sysvipc_allowed && jailed(td->td_ucred))
-		return (ENOSYS);
-	if (uap->which < 0 ||
-	    uap->which >= sizeof(semcalls)/sizeof(semcalls[0]))
-		return (EINVAL);
-	error = (*semcalls[uap->which])(td, &uap->a2);
-	return (error);
-}
-#endif /* __CYGWIN__ */
-
-/*
- * Allocate a new sem_undo structure for a process
- * (returns ptr to structure or NULL if no more room)
- */
-
-static struct sem_undo *
-semu_alloc(struct thread *td)
-{
-	int i;
-	struct sem_undo *suptr;
-	struct sem_undo **supptr;
-	int attempt;
-
-	SEMUNDO_LOCKASSERT(MA_OWNED, td->td_proc->winpid);
-	/*
-	 * Try twice to allocate something.
-	 * (we'll purge an empty structure after the first pass so
-	 * two passes are always enough)
-	 */
-
-	for (attempt = 0; attempt < 2; attempt++) {
-		/*
-		 * Look for a free structure.
-		 * Fill it in and return it if we find one.
-		 */
-
-		for (i = 0; i < seminfo.semmnu; i++) {
-			suptr = SEMU(i);
-#ifdef __CYGWIN__
-			if (suptr->un_proc == 0) {
-#else
-			if (suptr->un_proc == NULL) {
-#endif
-				SLIST_INSERT_HEAD(&semu_list, suptr, un_next);
-				suptr->un_cnt = 0;
-				suptr->un_proc = td->td_proc->winpid;
-				return(suptr);
-			}
-		}
-
-		/*
-		 * We didn't find a free one, if this is the first attempt
-		 * then try to free a structure.
-		 */
-
-		if (attempt == 0) {
-			/* All the structures are in use - try to free one */
-			int did_something = 0;
-
-			SLIST_FOREACH_PREVPTR(suptr, supptr, &semu_list,
-			    un_next) {
-				if (suptr->un_cnt == 0) {
-#ifdef __CYGWIN__
-					suptr->un_proc = 0;
-#else
-					suptr->un_proc = NULL;
-#endif
-					did_something = 1;
-					*supptr = SLIST_NEXT(suptr, un_next);
-					break;
-				}
-			}
-
-			/* If we didn't free anything then just give-up */
-			if (!did_something)
-				return(NULL);
-		} else {
-			/*
-			 * The second pass failed even though we freed
-			 * something after the first pass!
-			 * This is IMPOSSIBLE!
-			 */
-			panic("semu_alloc - second attempt failed");
-		}
-	}
-	return (NULL);
-}
-
-/*
- * Adjust a particular entry for a particular proc
- */
-
-static int
-semundo_adjust(struct thread *td, struct sem_undo **supptr, int semid,
-	       int semnum, int adjval)
-{
-	struct proc *p = td->td_proc;
-	struct sem_undo *suptr;
-	struct undo *sunptr;
-	int i;
-
-	SEMUNDO_LOCKASSERT(MA_OWNED, td->td_proc->winpid);
-	/* Look for and remember the sem_undo if the caller doesn't provide
-	   it */
-
-	suptr = *supptr;
-	if (suptr == NULL) {
-		SLIST_FOREACH(suptr, &semu_list, un_next) {
-#ifdef __CYGWIN__
-			if (suptr->un_proc == p->winpid) {
-#else
-			if (suptr->un_proc == p) {
-#endif
-				*supptr = suptr;
-				break;
-			}
-		}
-		if (suptr == NULL) {
-			if (adjval == 0)
-				return(0);
-			suptr = semu_alloc(td);
-			if (suptr == NULL)
-				return(ENOSPC);
-			*supptr = suptr;
-		}
-	}
-
-	/*
-	 * Look for the requested entry and adjust it (delete if adjval becomes
-	 * 0).
-	 */
-	sunptr = &suptr->un_ent[0];
-	for (i = 0; i < suptr->un_cnt; i++, sunptr++) {
-		if (sunptr->un_id != semid || sunptr->un_num != semnum)
-			continue;
-		if (adjval != 0) {
-			adjval += sunptr->un_adjval;
-			if (adjval > seminfo.semaem || adjval < -seminfo.semaem)
-				return (ERANGE);
-		}
-		sunptr->un_adjval = adjval;
-		if (sunptr->un_adjval == 0) {
-			suptr->un_cnt--;
-			if (i < suptr->un_cnt)
-				suptr->un_ent[i] =
-				    suptr->un_ent[suptr->un_cnt];
-		}
-		return(0);
-	}
-
-	/* Didn't find the right entry - create it */
-	if (adjval == 0)
-		return(0);
-	if (adjval > seminfo.semaem || adjval < -seminfo.semaem)
-		return (ERANGE);
-	if (suptr->un_cnt != seminfo.semume) {
-		sunptr = &suptr->un_ent[suptr->un_cnt];
-		suptr->un_cnt++;
-		sunptr->un_adjval = adjval;
-		sunptr->un_id = semid; sunptr->un_num = semnum;
-	} else
-		return(EINVAL);
-	return(0);
-}
-
-static void
-semundo_clear(int semid, int semnum, struct thread *td)
-{
-	struct sem_undo *suptr;
-
-	SEMUNDO_LOCKASSERT(MA_OWNED, td->td_proc->winpid);
-	SLIST_FOREACH(suptr, &semu_list, un_next) {
-		struct undo *sunptr = &suptr->un_ent[0];
-		int i = 0;
-
-		while (i < suptr->un_cnt) {
-			if (sunptr->un_id == semid) {
-				if (semnum == -1 || sunptr->un_num == semnum) {
-					suptr->un_cnt--;
-					if (i < suptr->un_cnt) {
-						suptr->un_ent[i] =
-						  suptr->un_ent[suptr->un_cnt];
-						continue;
-					}
-					if (semnum != -1)
-						break;
-				}
-			}
-			i++, sunptr++;
-		}
-	}
-}
-
-static int
-semvalid(int semid, struct semid_ds *semaptr)
-{
-
-	return ((semaptr->sem_perm.mode & SEM_ALLOC) == 0 ||
-	    semaptr->sem_perm.seq != IPCID_TO_SEQ(semid) ? EINVAL : 0);
-}
-
-/*
- * Note that the user-mode half of this passes a union, not a pointer
- */
-#ifndef _SYS_SYSPROTO_H_
-struct __semctl_args {
-	int	semid;
-	int	semnum;
-	int	cmd;
-	union	semun *arg;
-};
-#endif
-
-/*
- * MPSAFE
- */
-int
-__semctl(struct thread *td, struct __semctl_args *uap)
-{
-	int semid = uap->semid;
-	int semnum = uap->semnum;
-	int cmd = uap->cmd;
-	u_short *array;
-	union semun *arg = uap->arg;
-	union semun real_arg;
-#ifndef __CYGWIN__
-	struct ucred *cred = td->td_ucred;
-#endif
-	int i, rval, error;
-	struct semid_ds sbuf;
-	struct semid_ds *semaptr;
-	struct mtx *sema_mtxp;
-	u_short usval, count;
-
-	DPRINTF(("call to semctl(%d, %d, %d, 0x%x)\n",
-	    semid, semnum, cmd, arg));
-	if (!jail_sysvipc_allowed && jailed(td->td_ucred))
-		return (ENOSYS);
-
-	array = NULL;
-
-	switch(cmd) {
-#ifdef __CYGWIN__
-	case IPC_INFO:
-		if ((error = copyin(arg, &real_arg, sizeof(real_arg))) != 0)
-			return (error);
-		if (!semid) {
-			error = copyout(&seminfo, real_arg.buf,
-					sizeof(struct seminfo));
-			td->td_retval[0] = error ? -1 : 0;
-			return (error);
-		}
-		if (semid > seminfo.semmni)
-			semid = seminfo.semmni;
-		error = copyout(sema, real_arg.buf,
-				semid * sizeof(struct semid_ds));
-		td->td_retval[0] = error ? -1 : 0;
-		return (error);
-	case SEM_INFO:
-		if (!(error = copyin(arg, &real_arg, sizeof(real_arg)))) {
-			struct sem_info sem_info;
-			sem_info.sem_ids = semtots;
-			sem_info.sem_num = semtot;
-			error = copyout(&sem_info, real_arg.buf,
-					sizeof(struct sem_info));
-		}
-		td->td_retval[0] = error ? -1 : 0;
-		return (error);
-
-#endif /* __CYGWIN__ */
-	case SEM_STAT:
-		if (semid < 0 || semid >= seminfo.semmni)
-			return (EINVAL);
-		if ((error = copyin(arg, &real_arg, sizeof(real_arg))) != 0)
-			return (error);
-		semaptr = &sema[semid];
-		sema_mtxp = &sema_mtx[semid];
-		mtx_lock(sema_mtxp);
-		if ((semaptr->sem_perm.mode & SEM_ALLOC) == 0) {
-			error = EINVAL;
-			goto done2;
-		}
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_R)))
-			goto done2;
-		mtx_unlock(sema_mtxp);
-		error = copyout(semaptr, real_arg.buf, sizeof(struct semid_ds));
-		rval = IXSEQ_TO_IPCID(semid,semaptr->sem_perm);
-		if (error == 0)
-			td->td_retval[0] = rval;
-		return (error);
-	}
-
-	semid = IPCID_TO_IX(semid);
-	if (semid < 0 || semid >= seminfo.semmni)
-		return (EINVAL);
-
-	semaptr = &sema[semid];
-	sema_mtxp = &sema_mtx[semid];
-		
-	error = 0;
-	rval = 0;
-
-	switch (cmd) {
-	case IPC_RMID:
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_M)))
-			goto done2;
-#ifdef __CYGWIN__
-		semaptr->sem_perm.cuid = td->ipcblk->uid;
-		semaptr->sem_perm.uid = td->ipcblk->uid;
-#else
-		semaptr->sem_perm.cuid = cred->cr_uid;
-		semaptr->sem_perm.uid = cred->cr_uid;
-#endif
-		semtot -= semaptr->sem_nsems;
-		semtots--;
-		for (i = semaptr->sem_base - sem; i < semtot; i++)
-			sem[i] = sem[i + semaptr->sem_nsems];
-		for (i = 0; i < seminfo.semmni; i++) {
-			if ((sema[i].sem_perm.mode & SEM_ALLOC) &&
-			    sema[i].sem_base > semaptr->sem_base)
-				sema[i].sem_base -= semaptr->sem_nsems;
-		}
-		semaptr->sem_perm.mode = 0;
-		SEMUNDO_LOCK();
-		semundo_clear(semid, -1, td);
-		SEMUNDO_UNLOCK();
-		wakeup(semaptr);
-		break;
-
-	case IPC_SET:
-		if ((error = copyin(arg, &real_arg, sizeof(real_arg))) != 0)
-			goto done2;
-		if ((error = copyin(real_arg.buf, &sbuf, sizeof(sbuf))) != 0)
-			goto done2;
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_M)))
-			goto done2;
-		semaptr->sem_perm.uid = sbuf.sem_perm.uid;
-		semaptr->sem_perm.gid = sbuf.sem_perm.gid;
-		semaptr->sem_perm.mode = (semaptr->sem_perm.mode & ~0777) |
-		    (sbuf.sem_perm.mode & 0777);
-		semaptr->sem_ctime = time (NULL);
-		break;
-
-	case IPC_STAT:
-		if ((error = copyin(arg, &real_arg, sizeof(real_arg))) != 0)
-			goto done2;
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_R)))
-			goto done2;
-		sbuf = *semaptr;
-		mtx_unlock(sema_mtxp);
-		error = copyout(semaptr, real_arg.buf,
-				sizeof(struct semid_ds));
-		break;
-
-	case GETNCNT:
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_R)))
-			goto done2;
-		if (semnum < 0 || semnum >= semaptr->sem_nsems) {
-			error = EINVAL;
-			goto done2;
-		}
-		rval = semaptr->sem_base[semnum].semncnt;
-		break;
-
-	case GETPID:
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_R)))
-			goto done2;
-		if (semnum < 0 || semnum >= semaptr->sem_nsems) {
-			error = EINVAL;
-			goto done2;
-		}
-		rval = semaptr->sem_base[semnum].sempid;
-		break;
-
-	case GETVAL:
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_R)))
-			goto done2;
-		if (semnum < 0 || semnum >= semaptr->sem_nsems) {
-			error = EINVAL;
-			goto done2;
-		}
-		rval = semaptr->sem_base[semnum].semval;
-		break;
-
-	case GETALL:
-		if ((error = copyin(arg, &real_arg, sizeof(real_arg))) != 0)
-			goto done2;
-		array = (u_short *) sys_malloc(sizeof(*array) * semaptr->sem_nsems, M_TEMP,
-		    M_WAITOK);
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_R)))
-			goto done2;
-		for (i = 0; i < semaptr->sem_nsems; i++)
-			array[i] = semaptr->sem_base[i].semval;
-		mtx_unlock(sema_mtxp);
-		error = copyout(array, real_arg.array,
-		    i * sizeof(real_arg.array[0]));
-		break;
-
-	case GETZCNT:
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_R)))
-			goto done2;
-		if (semnum < 0 || semnum >= semaptr->sem_nsems) {
-			error = EINVAL;
-			goto done2;
-		}
-		rval = semaptr->sem_base[semnum].semzcnt;
-		break;
-
-	case SETVAL:
-		if ((error = copyin(arg, &real_arg, sizeof(real_arg))) != 0)
-			goto done2;
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_W)))
-			goto done2;
-		if (semnum < 0 || semnum >= semaptr->sem_nsems) {
-			error = EINVAL;
-			goto done2;
-		}
-		if (real_arg.val < 0 || real_arg.val > seminfo.semvmx) {
-			error = ERANGE;
-			goto done2;
-		}
-		semaptr->sem_base[semnum].semval = real_arg.val;
-		SEMUNDO_LOCK();
-		semundo_clear(semid, semnum, td);
-		SEMUNDO_UNLOCK();
-		wakeup(semaptr);
-		break;
-
-	case SETALL:
-		mtx_lock(sema_mtxp);
-raced:
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		count = semaptr->sem_nsems;
-		mtx_unlock(sema_mtxp);
-		if ((error = copyin(arg, &real_arg, sizeof(real_arg))) != 0)
-			goto done2;
-		array = (u_short *) sys_malloc(sizeof(*array) * count, M_TEMP, M_WAITOK);
-		error = copyin(real_arg.array, array, count * sizeof(*array));
-		if (error)
-			break;
-		mtx_lock(sema_mtxp);
-		if ((error = semvalid(uap->semid, semaptr)) != 0)
-			goto done2;
-		/* we could have raced? */
-		if (count != semaptr->sem_nsems) {
-			sys_free(array, M_TEMP);
-			array = NULL;
-			goto raced;
-		}
-		if ((error = ipcperm(td, &semaptr->sem_perm, IPC_W)))
-			goto done2;
-		for (i = 0; i < semaptr->sem_nsems; i++) {
-			usval = array[i];
-			if (usval > seminfo.semvmx) {
-				error = ERANGE;
-				break;
-			}
-			semaptr->sem_base[i].semval = usval;
-		}
-		SEMUNDO_LOCK();
-		semundo_clear(semid, -1, td);
-		SEMUNDO_UNLOCK();
-		wakeup(semaptr);
-		break;
-
-	default:
-		error = EINVAL;
-		break;
-	}
-
-	if (error == 0)
-		td->td_retval[0] = rval;
-done2:
-	if (mtx_owned(sema_mtxp, td->td_proc->winpid))
-		mtx_unlock(sema_mtxp);
-	if (array != NULL)
-		sys_free(array, M_TEMP);
-	return(error);
-}
-
-#ifndef _SYS_SYSPROTO_H_
-struct semget_args {
-	key_t	key;
-	int	nsems;
-	int	semflg;
-};
-#endif
-
-/*
- * MPSAFE
- */
-int
-semget(struct thread *td, struct semget_args *uap)
-{
-	int semid, error = 0;
-	key_t key = uap->key;
-	int nsems = uap->nsems;
-	int semflg = uap->semflg;
-#ifndef __CYGWIN__
-	struct ucred *cred = td->td_ucred;
-#endif
-
-	DPRINTF(("semget(0x%llx, %d, 0%o)\n", key, nsems, semflg));
-	if (!jail_sysvipc_allowed && jailed(td->td_ucred))
-		return (ENOSYS);
-
-	mtx_lock(&Giant);
-	if (key != IPC_PRIVATE) {
-		for (semid = 0; semid < seminfo.semmni; semid++) {
-			if ((sema[semid].sem_perm.mode & SEM_ALLOC) &&
-			    sema[semid].sem_perm.key == key)
-				break;
-		}
-		if (semid < seminfo.semmni) {
-			DPRINTF(("found public key\n"));
-			if ((error = ipcperm(td, &sema[semid].sem_perm,
-			    semflg & 0700))) {
-				goto done2;
-			}
-			if (nsems > 0 && sema[semid].sem_nsems < nsems) {
-				DPRINTF(("too small\n"));
-				error = EINVAL;
-				goto done2;
-			}
-			if ((semflg & IPC_CREAT) && (semflg & IPC_EXCL)) {
-				DPRINTF(("not exclusive\n"));
-				error = EEXIST;
-				goto done2;
-			}
-			goto found;
-		}
-	}
-
-	DPRINTF(("need to allocate the semid_ds\n"));
-	if (key == IPC_PRIVATE || (semflg & IPC_CREAT)) {
-		if (nsems <= 0 || nsems > seminfo.semmsl) {
-			DPRINTF(("nsems out of range (0<%d<=%d)\n", nsems,
-			    seminfo.semmsl));
-			error = EINVAL;
-			goto done2;
-		}
-		if (nsems > seminfo.semmns - semtot) {
-			DPRINTF((
-			    "not enough semaphores left (need %d, got %d)\n",
-			    nsems, seminfo.semmns - semtot));
-			error = ENOSPC;
-			goto done2;
-		}
-		for (semid = 0; semid < seminfo.semmni; semid++) {
-			if ((sema[semid].sem_perm.mode & SEM_ALLOC) == 0)
-				break;
-		}
-		if (semid == seminfo.semmni) {
-			DPRINTF(("no more semid_ds's available\n"));
-			error = ENOSPC;
-			goto done2;
-		}
-		DPRINTF(("semid %d is available\n", semid));
-		sema[semid].sem_perm.key = key;
-#ifdef __CYGWIN__
-		sema[semid].sem_perm.cuid = td->ipcblk->uid;
-		sema[semid].sem_perm.uid = td->ipcblk->uid;
-		sema[semid].sem_perm.cgid = td->ipcblk->gid;
-		sema[semid].sem_perm.gid = td->ipcblk->gid;
-#else
-		sema[semid].sem_perm.cuid = cred->cr_uid;
-		sema[semid].sem_perm.uid = cred->cr_uid;
-		sema[semid].sem_perm.cgid = cred->cr_gid;
-		sema[semid].sem_perm.gid = cred->cr_gid;
-#endif
-		sema[semid].sem_perm.mode = (semflg & 0777) | SEM_ALLOC;
-		sema[semid].sem_perm.seq =
-		    (sema[semid].sem_perm.seq + 1) & 0x7fff;
-		sema[semid].sem_nsems = nsems;
-		sema[semid].sem_otime = 0;
-		sema[semid].sem_ctime = time (NULL);
-		sema[semid].sem_base = &sem[semtot];
-		semtot += nsems;
-		semtots++;
-		bzero(sema[semid].sem_base,
-		    sizeof(sema[semid].sem_base[0])*nsems);
-		DPRINTF(("sembase = 0x%x, next = 0x%x\n", sema[semid].sem_base,
-		    &sem[semtot]));
-	} else {
-		DPRINTF(("didn't find it and wasn't asked to create it\n"));
-		error = ENOENT;
-		goto done2;
-	}
-
-found:
-	td->td_retval[0] = IXSEQ_TO_IPCID(semid, sema[semid].sem_perm);
-done2:
-#ifdef __CYGWIN__
-	if (!error)
-		ipcexit_creat_hookthread (td);
-#endif
-	mtx_unlock(&Giant);
-	return (error);
-}
-
-#ifndef _SYS_SYSPROTO_H_
-struct semop_args {
-	int	semid;
-	struct	sembuf *sops;
-	size_t	nsops;
-};
-#endif
-
-/*
- * MPSAFE
- */
-int
-semop(struct thread *td, struct semop_args *uap)
-{
-#define SMALL_SOPS      8
-	struct sembuf small_sops[SMALL_SOPS];
-	int semid = uap->semid;
-	size_t nsops = uap->nsops;
-	struct sembuf *sops;
-	struct semid_ds *semaptr;
-	struct sembuf *sopptr = 0;
-	struct sem *semptr = 0;
-	struct sem_undo *suptr;
-	struct mtx *sema_mtxp;
-	size_t i, j, k;
-	int error;
-	int do_wakeup, do_undos;
-
-	DPRINTF(("call to semop(%d, 0x%x, %u)\n", semid, uap->sops, nsops));
-
-	if (!jail_sysvipc_allowed && jailed(td->td_ucred))
-		return (ENOSYS);
-
-	semid = IPCID_TO_IX(semid);	/* Convert back to zero origin */
-
-	if (semid < 0 || semid >= seminfo.semmni)
-		return (EINVAL);
-
-	/* Allocate memory for sem_ops */
-	if (nsops <= SMALL_SOPS)
-		sops = small_sops;
-	else if (nsops <= (unsigned long) seminfo.semopm)
-		sops = (struct sembuf *) sys_malloc(nsops * sizeof(*sops), M_SEM, M_WAITOK);
-	else {
-		DPRINTF(("too many sops (max=%d, nsops=%d)\n", seminfo.semopm,
-		    nsops));
-		return (E2BIG);
-	}
-	if ((error = copyin(uap->sops, sops, nsops * sizeof(sops[0]))) != 0) {
-		DPRINTF(("error = %d from copyin(%08x, %08x, %d)\n", error,
-		    uap->sops, sops, nsops * sizeof(sops[0])));
-		if (sops != small_sops)
-			sys_free(sops, M_SEM);
-		return (error);
-	}
-
-	semaptr = &sema[semid];
-	sema_mtxp = &sema_mtx[semid];
-	mtx_lock(sema_mtxp);
-	if ((semaptr->sem_perm.mode & SEM_ALLOC) == 0) {
-		error = EINVAL;
-		goto done2;
-	}
-	if (semaptr->sem_perm.seq != IPCID_TO_SEQ(uap->semid)) {
-		error = EINVAL;
-		goto done2;
-	}
-	/*
-	 * Initial pass thru sops to see what permissions are needed.
-	 * Also perform any checks that don't need repeating on each
-	 * attempt to satisfy the request vector.
-	 */
-	j = 0;		/* permission needed */
-	do_undos = 0;
-	for (i = 0; i < nsops; i++) {
-		sopptr = &sops[i];
-		if (sopptr->sem_num >= semaptr->sem_nsems) {
-			error = EFBIG;
-			goto done2;
-		}
-		if (sopptr->sem_flg & SEM_UNDO && sopptr->sem_op != 0)
-			do_undos = 1;
-		j |= (sopptr->sem_op == 0) ? SEM_R : SEM_A;
-	}
-
-	if ((error = ipcperm(td, &semaptr->sem_perm, j))) {
-		DPRINTF(("error = %d from ipaccess\n", error));
-		goto done2;
-	}
-
-	/*
-	 * Loop trying to satisfy the vector of requests.
-	 * If we reach a point where we must wait, any requests already
-	 * performed are rolled back and we go to sleep until some other
-	 * process wakes us up.  At this point, we start all over again.
-	 *
-	 * This ensures that from the perspective of other tasks, a set
-	 * of requests is atomic (never partially satisfied).
-	 */
-	for (;;) {
-		do_wakeup = 0;
-		error = 0;	/* error return if necessary */
-
-		for (i = 0; i < nsops; i++) {
-			sopptr = &sops[i];
-			semptr = &semaptr->sem_base[sopptr->sem_num];
-
-			DPRINTF((
-			    "semop: semaptr=%x, sem_base=%x, "
-			    "semptr=%x, sem[%d]=%d : op=%d, flag=%s\n",
-			    semaptr, semaptr->sem_base, semptr,
-			    sopptr->sem_num, semptr->semval, sopptr->sem_op,
-			    (sopptr->sem_flg & IPC_NOWAIT) ?
-			    "nowait" : "wait"));
-
-			if (sopptr->sem_op < 0) {
-				if (semptr->semval + sopptr->sem_op < 0) {
-					DPRINTF(("semop:  can't do it now\n"));
-					break;
-				} else {
-					semptr->semval += sopptr->sem_op;
-					if (semptr->semval == 0 &&
-					    semptr->semzcnt > 0)
-						do_wakeup = 1;
-				}
-			} else if (sopptr->sem_op == 0) {
-				if (semptr->semval != 0) {
-					DPRINTF(("semop:  not zero now\n"));
-					break;
-				}
-			} else if (semptr->semval + sopptr->sem_op >
-			    seminfo.semvmx) {
-				error = ERANGE;
-				break;
-			} else {
-				if (semptr->semncnt > 0)
-					do_wakeup = 1;
-				semptr->semval += sopptr->sem_op;
-			}
-		}
-
-		/*
-		 * Did we get through the entire vector?
-		 */
-		if (i >= nsops)
-			goto done;
-
-		/*
-		 * No ... rollback anything that we've already done
-		 */
-		DPRINTF(("semop:  rollback 0 through %d\n", i-1));
-		for (j = 0; j < i; j++)
-			semaptr->sem_base[sops[j].sem_num].semval -=
-			    sops[j].sem_op;
-
-		/* If we detected an error, return it */
-		if (error != 0)
-			goto done2;
-
-		/*
-		 * If the request that we couldn't satisfy has the
-		 * NOWAIT flag set then return with EAGAIN.
-		 */
-		if (sopptr->sem_flg & IPC_NOWAIT) {
-			error = EAGAIN;
-			goto done2;
-		}
-
-		if (sopptr->sem_op == 0)
-			semptr->semzcnt++;
-		else
-			semptr->semncnt++;
-
-		DPRINTF(("semop:  good night!\n"));
-		error = msleep(semaptr, sema_mtxp, (PZERO - 4) | PCATCH,
-		    "semwait", 0);
-		DPRINTF(("semop:  good morning (error=%d)!\n", error));
-		/* return code is checked below, after sem[nz]cnt-- */
-
-		/*
-		 * Make sure that the semaphore still exists
-		 */
-		if ((semaptr->sem_perm.mode & SEM_ALLOC) == 0 ||
-		    semaptr->sem_perm.seq != IPCID_TO_SEQ(uap->semid)) {
-			error = EIDRM;
-			goto done2;
-		}
-
-		/*
-		 * The semaphore is still alive.  Readjust the count of
-		 * waiting processes.
-		 */
-		if (sopptr->sem_op == 0)
-			semptr->semzcnt--;
-		else
-			semptr->semncnt--;
-
-		/*
-		 * Is it really morning, or was our sleep interrupted?
-		 * (Delayed check of msleep() return code because we
-		 * need to decrement sem[nz]cnt either way.)
-		 */
-		if (error != 0) {
-#ifdef __CYGWIN__
-		    if (error != EIDRM)
-#endif /* __CYGWIN__ */
-			error = EINTR;
-			goto done2;
-		}
-		DPRINTF(("semop:  good morning!\n"));
-	}
-
-done:
-	/*
-	 * Process any SEM_UNDO requests.
-	 */
-	if (do_undos) {
-		SEMUNDO_LOCK();
-		suptr = NULL;
-		for (i = 0; i < nsops; i++) {
-			/*
-			 * We only need to deal with SEM_UNDO's for non-zero
-			 * op's.
-			 */
-			int adjval;
-
-			if ((sops[i].sem_flg & SEM_UNDO) == 0)
-				continue;
-			adjval = sops[i].sem_op;
-			if (adjval == 0)
-				continue;
-			error = semundo_adjust(td, &suptr, semid,
-			    sops[i].sem_num, -adjval);
-			if (error == 0)
-				continue;
-
-			/*
-			 * Oh-Oh!  We ran out of either sem_undo's or undo's.
-			 * Rollback the adjustments to this point and then
-			 * rollback the semaphore ups and down so we can return
-			 * with an error with all structures restored.  We
-			 * rollback the undo's in the exact reverse order that
-			 * we applied them.  This guarantees that we won't run
-			 * out of space as we roll things back out.
-			 */
-			for (j = 0; j < i; j++) {
-				k = i - j - 1;
-				if ((sops[k].sem_flg & SEM_UNDO) == 0)
-					continue;
-				adjval = sops[k].sem_op;
-				if (adjval == 0)
-					continue;
-				if (semundo_adjust(td, &suptr, semid,
-				    sops[k].sem_num, adjval) != 0)
-					panic("semop - can't undo undos");
-			}
-
-			for (j = 0; j < nsops; j++)
-				semaptr->sem_base[sops[j].sem_num].semval -=
-				    sops[j].sem_op;
-
-			DPRINTF(("error = %d from semundo_adjust\n", error));
-			SEMUNDO_UNLOCK();
-			goto done2;
-		} /* loop through the sops */
-		SEMUNDO_UNLOCK();
-	} /* if (do_undos) */
-
-	/* We're definitely done - set the sempid's and time */
-	for (i = 0; i < nsops; i++) {
-		sopptr = &sops[i];
-		semptr = &semaptr->sem_base[sopptr->sem_num];
-		semptr->sempid = td->td_proc->p_pid;
-	}
-	semaptr->sem_otime = time (NULL);
-
-	/*
-	 * Do a wakeup if any semaphore was up'd whilst something was
-	 * sleeping on it.
-	 */
-	if (do_wakeup) {
-		DPRINTF(("semop:  doing wakeup\n"));
-		wakeup(semaptr);
-		DPRINTF(("semop:  back from wakeup\n"));
-	}
-	DPRINTF(("semop:  done\n"));
-	td->td_retval[0] = 0;
-done2:
-	mtx_unlock(sema_mtxp);
-	if (sops != small_sops)
-		sys_free(sops, M_SEM);
-	return (error);
-}
-
-/*
- * Go through the undo structures for this process and apply the adjustments to
- * semaphores.
- */
-void
-semexit_myhook(void *arg, struct proc *p)
-{
-	struct sem_undo *suptr;
-	struct sem_undo **supptr;
-
-	/*
-	 * Go through the chain of undo vectors looking for one
-	 * associated with this process.
-	 */
-	SEMUNDO_HOOKLOCK();
-	SLIST_FOREACH_PREVPTR(suptr, supptr, &semu_list, un_next) {
-#ifdef __CYGWIN__
-		if (suptr->un_proc == p->winpid)
-#else
-		if (suptr->un_proc == p)
-#endif
-			break;
-	}
-#ifndef __CYGWIN__
-	SEMUNDO_UNLOCK();
-#endif
-
-	if (suptr == NULL) {
-		SEMUNDO_UNLOCK();
-		return;
-	}
-
-#ifdef __CYGWIN__
-	DPRINTF(("proc @%u(%u) has undo structure with %d entries\n",
-	    p->cygpid, p->winpid, suptr->un_cnt));
-#else
-	DPRINTF(("proc @%08x has undo structure with %d entries\n", p,
-	    suptr->un_cnt));
-#endif
-
-	/*
-	 * If there are any active undo elements then process them.
-	 */
-	if (suptr->un_cnt > 0) {
-		int ix;
-
-		for (ix = 0; ix < suptr->un_cnt; ix++) {
-			int semid = suptr->un_ent[ix].un_id;
-			int semnum = suptr->un_ent[ix].un_num;
-			int adjval = suptr->un_ent[ix].un_adjval;
-			struct semid_ds *semaptr;
-			struct mtx *sema_mtxp;
-
-			semaptr = &sema[semid];
-			sema_mtxp = &sema_mtx[semid];
-#ifdef __CYGWIN__
-			_mtx_lock(sema_mtxp, p->winpid, __FILE__, __LINE__);
-#else
-			mtx_lock(sema_mtxp);
-			SEMUNDO_HOOKLOCK();
-#endif
-			if ((semaptr->sem_perm.mode & SEM_ALLOC) == 0)
-				panic("semexit - semid not allocated");
-			if (semnum >= semaptr->sem_nsems)
-				panic("semexit - semnum out of range");
-
-			DPRINTF((
-#ifdef __CYGWIN__
-			    "semexit:  %u id=%d num=%d(adj=%d) ; sem=%d\n",
-#else
-			    "semexit:  %08x id=%d num=%d(adj=%d) ; sem=%d\n",
-#endif
-			    suptr->un_proc, suptr->un_ent[ix].un_id,
-			    suptr->un_ent[ix].un_num,
-			    suptr->un_ent[ix].un_adjval,
-			    semaptr->sem_base[semnum].semval));
-
-			if (adjval < 0) {
-				if (semaptr->sem_base[semnum].semval < -adjval)
-					semaptr->sem_base[semnum].semval = 0;
-				else
-					semaptr->sem_base[semnum].semval +=
-					    adjval;
-			} else
-				semaptr->sem_base[semnum].semval += adjval;
-
-			wakeup(semaptr);
-			DPRINTF(("semexit:  back from wakeup\n"));
-			_mtx_unlock(sema_mtxp, __FILE__, __LINE__);
-#ifndef __CYGWIN__
-			SEMUNDO_UNLOCK();
-#endif
-		}
-	}
-
-	/*
-	 * Deallocate the undo vector.
-	 */
-	DPRINTF(("removing vector (%u)\n", suptr->un_proc));
-#ifdef __CYGWIN__
-	suptr->un_proc = 0;
-#else
-	suptr->un_proc = NULL;
-#endif
-	*supptr = SLIST_NEXT(suptr, un_next);
-#ifdef __CYGWIN__
-	SEMUNDO_UNLOCK();
-#endif
-}
-
-#ifndef __CYGWIN__
-static int
-sysctl_sema(SYSCTL_HANDLER_ARGS)
-{
-
-	return (SYSCTL_OUT(req, sema,
-	    sizeof(struct semid_ds) * seminfo.semmni));
-}
-#endif /* __CYGWIN__ */
-#endif /* __OUTSIDE_CYGWIN__ */
author	cvs2svn <>	2014-02-18 19:58:41 +0000
committer	cvs2svn <>	2014-02-18 19:58:41 +0000
commit	b5279ecc51ff751ccd052fbb7c20efd529575f7e (patch)
tree	64141e96a5d64ae59fb7f410270e4daa41878a03 /winsup/cygserver/sysv_sem.cc
parent	a2a48cb593a9b3cc3f5c63c39f52c32db31cec50 (diff)
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