diff options
| author | Bruce Evans <bde@FreeBSD.org> | 1995-10-21 19:50:00 +0000 |
|---|---|---|
| committer | Bruce Evans <bde@FreeBSD.org> | 1995-10-21 19:50:00 +0000 |
| commit | 725db531b81e353adc26fbf8cfe6a252559bcf96 (patch) | |
| tree | d76c7dacc8e15aed67fd05370a96749d0af845fc /sys/kern/sysv_sem.c | |
| parent | 3adce56927f6ec014dd86b048eba43b3692312d8 (diff) | |
Notes
Diffstat (limited to 'sys/kern/sysv_sem.c')
| -rw-r--r-- | sys/kern/sysv_sem.c | 55 |
1 files changed, 38 insertions, 17 deletions
diff --git a/sys/kern/sysv_sem.c b/sys/kern/sysv_sem.c index afcbc6d3e56a..ff4acaefeaf1 100644 --- a/sys/kern/sysv_sem.c +++ b/sys/kern/sysv_sem.c @@ -1,4 +1,4 @@ -/* $Id: sysv_sem.c,v 1.8 1995/08/30 00:33:01 bde Exp $ */ +/* $Id: sysv_sem.c,v 1.9 1995/09/09 18:10:07 davidg Exp $ */ /* * Implementation of SVID semaphores @@ -10,16 +10,35 @@ #include <sys/param.h> #include <sys/systm.h> +#include <sys/sysproto.h> #include <sys/kernel.h> #include <sys/proc.h> #include <sys/sem.h> -#include <sys/malloc.h> +#include <sys/sysent.h> static void seminit __P((void *)); SYSINIT(sysv_sem, SI_SUB_SYSV_SEM, SI_ORDER_FIRST, seminit, NULL) -static int semctl(), semget(), semop(), semconfig(); -int (*semcalls[])() = { semctl, semget, semop, semconfig }; +struct semctl_args; +static int semctl __P((struct proc *p, struct semctl_args *uap, int *retval)); +struct semget_args; +static int semget __P((struct proc *p, struct semget_args *uap, int *retval)); +struct semop_args; +static int semop __P((struct proc *p, struct semop_args *uap, int *retval)); +struct semconfig_args; +static int semconfig __P((struct proc *p, struct semconfig_args *uap, int *retval)); + +struct sem_undo *semu_alloc __P((struct proc *p)); +int semundo_adjust __P((struct proc *p, struct sem_undo **supptr, int semid, int semnum, int adjval)); +void semundo_clear __P((int semid, int semnum)); +void semexit __P((struct proc *p)); + +/* XXX casting to (sy_call_t *) is bogus, as usual. */ +sy_call_t *semcalls[] = { + (sy_call_t *)semctl, (sy_call_t *)semget, + (sy_call_t *)semop, (sy_call_t *)semconfig +}; + int semtot = 0; struct semid_ds *sema; /* semaphore id pool */ struct sem *sem; /* semaphore pool */ @@ -30,8 +49,8 @@ int *semu; /* undo structure pool */ static struct proc *semlock_holder = NULL; void -seminit(udata) - void *udata; +seminit(dummy) + void *dummy; { register int i; @@ -54,15 +73,17 @@ seminit(udata) /* * Entry point for all SEM calls */ - -struct semsys_args { - u_int which; -}; - int semsys(p, uap, retval) struct proc *p; - struct semsys_args *uap; + /* XXX actually varargs. */ + struct semsys_args /* { + u_int which; + int a2; + int a3; + int a4; + int a5; + } */ *uap; int *retval; { @@ -71,7 +92,7 @@ semsys(p, uap, retval) if (uap->which >= sizeof(semcalls)/sizeof(semcalls[0])) return (EINVAL); - return ((*semcalls[uap->which])(p, &uap[1], retval)); + return ((*semcalls[uap->which])(p, &uap->a2, retval)); } /* @@ -93,7 +114,7 @@ struct semconfig_args { semconfig_ctl_t flag; }; -int +static int semconfig(p, uap, retval) struct proc *p; struct semconfig_args *uap; @@ -299,7 +320,7 @@ struct semctl_args { union semun *arg; }; -int +static int semctl(p, uap, retval) struct proc *p; register struct semctl_args *uap; @@ -462,7 +483,7 @@ struct semget_args { int semflg; }; -int +static int semget(p, uap, retval) struct proc *p; register struct semget_args *uap; @@ -575,7 +596,7 @@ struct semop_args { int nsops; }; -int +static int semop(p, uap, retval) struct proc *p; register struct semop_args *uap; |
