/*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifndef _SYS_FILE_H_
#define _SYS_FILE_H_
+#include <sys/appleapiopts.h>
#include <sys/fcntl.h>
#include <sys/unistd.h>
#ifdef KERNEL
+#include <sys/errno.h>
#include <sys/queue.h>
#include <sys/cdefs.h>
struct proc;
struct uio;
+#ifdef __APPLE_API_UNSTABLE
/*
* Kernel descriptor table.
struct ucred *f_cred; /* credentials associated with descriptor */
struct fileops {
int (*fo_read) __P((struct file *fp, struct uio *uio,
- struct ucred *cred));
+ struct ucred *cred, int flags,
+ struct proc *p));
int (*fo_write) __P((struct file *fp, struct uio *uio,
- struct ucred *cred));
+ struct ucred *cred, int flags,
+ struct proc *p));
+#define FOF_OFFSET 1
int (*fo_ioctl) __P((struct file *fp, u_long com,
caddr_t data, struct proc *p));
int (*fo_select) __P((struct file *fp, int which,
- void * wql, struct proc *p));
+ void *wql, struct proc *p));
int (*fo_close) __P((struct file *fp, struct proc *p));
} *f_ops;
off_t f_offset;
- caddr_t f_data; /* vnode or socket */
+ caddr_t f_data; /* vnode or socket or SHM or semaphore */
};
+#ifdef __APPLE_API_PRIVATE
LIST_HEAD(filelist, file);
extern struct filelist filehead; /* head of list of open files */
extern int maxfiles; /* kernel limit on number of open files */
extern int nfiles; /* actual number of open files */
+#endif /* __APPLE_API_PRIVATE */
__BEGIN_DECLS
int fref __P((struct file *)); /* take a reference on file pointer */
int frele __P((struct file *)); /* release a reference on file pointer */
int fcount __P((struct file *)); /* returns the reference count */
+
+static __inline int fo_read __P((struct file *fp, struct uio *uio,
+ struct ucred *cred, int flags, struct proc *p));
+static __inline int fo_write __P((struct file *fp, struct uio *uio,
+ struct ucred *cred, int flags, struct proc *p));
+static __inline int fo_ioctl __P((struct file *fp, u_long com, caddr_t data,
+ struct proc *p));
+static __inline int fo_select __P((struct file *fp, int which, void *wql,
+ struct proc *p));
+static __inline int fo_close __P((struct file *fp, struct proc *p));
+
+static __inline int
+fo_read(struct file *fp, struct uio *uio, struct ucred *cred, int flags, struct proc *p)
+{
+ int error;
+
+ if ((error = fref(fp)) == -1)
+ return (EBADF);
+ error = (*fp->f_ops->fo_read)(fp, uio, cred, flags, p);
+ frele(fp);
+ return (error);
+}
+
+static __inline int
+fo_write(struct file *fp, struct uio *uio, struct ucred *cred, int flags, struct proc *p)
+{
+ int error;
+
+ if ((error = fref(fp)) == -1)
+ return (EBADF);
+ error = (*fp->f_ops->fo_write)(fp, uio, cred, flags, p);
+ frele(fp);
+ return (error);
+}
+
+static __inline int
+fo_ioctl(struct file *fp, u_long com, caddr_t data, struct proc *p)
+{
+ int error;
+
+ if ((error = fref(fp)) == -1)
+ return (EBADF);
+ error = (*fp->f_ops->fo_ioctl)(fp, com, data, p);
+ frele(fp);
+ return (error);
+}
+
+static __inline int
+fo_select(struct file *fp, int which, void *wql, struct proc *p)
+{
+ int error;
+
+ error = (*fp->f_ops->fo_select)(fp, which, wql, p);
+ return (error);
+}
+
+static __inline int
+fo_close(struct file *fp, struct proc *p)
+{
+
+ return ((*fp->f_ops->fo_close)(fp, p));
+}
__END_DECLS
+#endif /* __APPLE_API_UNSTABLE */
+
#endif /* KERNEL */
#endif /* !_SYS_FILE_H_ */
projects / apple / xnu.git / blobdiff