/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* All Rights Reserved.
*/
/*
- * posix_shm.c : Support for POSIX semaphore apis
+ * posix_shm.c : Support for POSIX semaphore APIs
*
* File: posix_sem.c
* Author: Ananthakrishna Ramesh
#include <kern/clock.h>
#include <mach/kern_return.h>
-
#define PSEMNAMLEN 31 /* maximum name segment length we bother with */
struct pseminfo {
long psemnument; /* number of cache entries allocated */
struct psemstats psemstats; /* cache effectiveness statistics */
-int psem_cache_search __P((struct pseminfo **, struct psemname *, struct psemcache **));
+static int psem_cache_search __P((struct pseminfo **,
+ struct psemname *, struct psemcache **));
-int psem_read __P((struct file *fp, struct uio *uio,
- struct ucred *cred));
-int psem_write __P((struct file *fp, struct uio *uio,
- struct ucred *cred));
-int psem_ioctl __P((struct file *fp, u_long com,
- caddr_t data, struct proc *p));
-int psem_select __P((struct file *fp, int which,
- struct proc *p));
-int psem_closefile __P((struct file *fp, struct proc *p));
+static int psem_read __P((struct file *fp, struct uio *uio,
+ struct ucred *cred, int flags, struct proc *p));
+static int psem_write __P((struct file *fp, struct uio *uio,
+ struct ucred *cred, int flags, struct proc *p));
+static int psem_ioctl __P((struct file *fp, u_long com,
+ caddr_t data, struct proc *p));
+static int psem_select __P((struct file *fp, int which, void *wql,
+ struct proc *p));
+static int psem_closefile __P((struct file *fp, struct proc *p));
struct fileops psemops =
{ psem_read, psem_write, psem_ioctl, psem_select, psem_closefile };
* fails, a status of zero is returned.
*/
-int
+static int
psem_cache_search(psemp, pnp, pcache)
struct pseminfo **psemp;
struct psemname *pnp;
/*
* Add an entry to the cache.
*/
-int
+static int
psem_cache_add(psemp, pnp)
struct pseminfo *psemp;
struct psemname *pnp;
psemhashtbl = hashinit(desiredvnodes, M_SHM, &psemhash);
}
+static void
+psem_cache_delete(pcp)
+ struct psemcache *pcp;
+{
+#if DIAGNOSTIC
+ if (pcp->psem_hash.le_prev == 0)
+ panic("psem namecache purge le_prev");
+ if (pcp->psem_hash.le_next == pcp)
+ panic("namecache purge le_next");
+#endif /* DIAGNOSTIC */
+ LIST_REMOVE(pcp, psem_hash);
+ pcp->psem_hash.le_prev = 0;
+ psemnument--;
+}
+
/*
* Invalidate a all entries to particular vnode.
*
}
}
-psem_cache_delete(pcp)
- struct psemcache *pcp;
-{
-#if DIAGNOSTIC
- if (pcp->psem_hash.le_prev == 0)
- panic("psem namecache purge le_prev");
- if (pcp->psem_hash.le_next == pcp)
- panic("namecache purge le_next");
-#endif /* DIAGNOSTIC */
- LIST_REMOVE(pcp, psem_hash);
- pcp->psem_hash.le_prev = 0;
- psemnument--;
-}
-
-
struct sem_open_args {
-const char *name;
-int oflag;
-int mode;
-int value;
+ const char *name;
+ int oflag;
+ int mode;
+ int value;
};
int
sem_open(p, uap, retval)
-struct proc *p;
-register struct sem_open_args *uap;
-register_t *retval;
+ struct proc *p;
+ register struct sem_open_args *uap;
+ register_t *retval;
{
register struct filedesc *fdp = p->p_fd;
register struct file *fp;
goto bad;
}
-
#ifdef PSXSEM_NAME_RESTRICT
nameptr = pnbuf;
if (*nameptr == '/') {
return (error);
}
-
-
int
-psem_access(struct pseminfo *pinfo, int mode, struct ucred *cred, struct proc *p)
+psem_access(pinfo, mode, cred, p)
+ struct pseminfo *pinfo;
+ int mode;
+ struct ucred *cred;
+ struct proc *p;
{
mode_t mask;
register gid_t *gp;
return ((pinfo->psem_mode & mask) == mask ? 0 : EACCES);
}
-
-
-
struct sem_unlink_args {
-const char *name;
+ const char *name;
};
int
sem_unlink(p, uap, retval)
-struct proc *p;
-register struct sem_unlink_args *uap;
-register_t *retval;
+ struct proc *p;
+ register struct sem_unlink_args *uap;
+ register_t *retval;
{
register struct filedesc *fdp = p->p_fd;
register struct file *fp;
}
struct sem_close_args {
-sem_t *sem;
+ sem_t *sem;
};
int
if( error = closef(fp, p))
return(error);
return(0);
-
-
}
struct sem_wait_args {
-sem_t *sem;
+ sem_t *sem;
};
int
default:
return (EINVAL);
}
-
}
struct sem_trywait_args {
-sem_t *sem;
+ sem_t *sem;
};
int
sem_trywait(p, uap, retval)
struct proc *p;
- struct sem_wait_args *uap;
+ struct sem_trywait_args *uap;
register_t *retval;
{
int fd = (int)uap->sem;
default:
return (EINVAL);
}
-
}
struct sem_post_args {
-sem_t *sem;
+ sem_t *sem;
};
int
sem_post(p, uap, retval)
struct proc *p;
- struct sem_wait_args *uap;
+ struct sem_post_args *uap;
register_t *retval;
{
int fd = (int)uap->sem;
default:
return (EINVAL);
}
-
}
struct sem_init_args {
-sem_t *sem;
-int phsared;
-unsigned int value;
+ sem_t *sem;
+ int phsared;
+ unsigned int value;
};
int
}
struct sem_destroy_args {
-sem_t *sem;
+ sem_t *sem;
};
int
}
struct sem_getvalue_args {
-sem_t *sem;
-int * sval;
+ sem_t *sem;
+ int * sval;
};
int
return(ENOSYS);
}
-int
-psem_closefile(fp, p)
- struct file *fp;
- struct proc *p;
-{
-
- return (psem_close(((struct psemnode *)fp->f_data), fp->f_flag,
- fp->f_cred, p));
-}
-
-
-int
+static int
psem_close(pnode, flags, cred, p)
register struct psemnode *pnode;
int flags;
return (error);
}
+static int
+psem_closefile(fp, p)
+ struct file *fp;
+ struct proc *p;
+{
+
+ return (psem_close(((struct psemnode *)fp->f_data), fp->f_flag,
+ fp->f_cred, p));
+}
+
int
psem_delete(struct pseminfo * pinfo)
{
default:
return (EINVAL);
}
-
}
-
-int
-psem_read(struct file *fp, struct uio *uio, struct ucred *cred)
+static int
+psem_read(fp, uio, cred, flags, p)
+ struct file *fp;
+ struct uio *uio;
+ struct ucred *cred;
+ int flags;
+ struct proc *p;
{
return(EOPNOTSUPP);
}
-int
-psem_write(struct file *fp, struct uio *uio, struct ucred *cred)
+
+static int
+psem_write(fp, uio, cred, flags, p)
+ struct file *fp;
+ struct uio *uio;
+ struct ucred *cred;
+ int flags;
+ struct proc *p;
{
return(EOPNOTSUPP);
}
-int
-psem_ioctl(struct file *fp, u_long com, caddr_t data, struct proc *p)
+
+static int
+psem_ioctl(fp, com, data, p)
+ struct file *fp;
+ u_long com;
+ caddr_t data;
+ struct proc *p;
{
return(EOPNOTSUPP);
}
-int
-psem_select(struct file *fp, int which, struct proc *p)
+
+static int
+psem_select(fp, which, wql, p)
+ struct file *fp;
+ int which;
+ void *wql;
+ struct proc *p;
{
return(EOPNOTSUPP);
}
projects / apple / xnu.git / blobdiff