xnu-344.26.tar.gz

[apple/xnu.git] / bsd / sys / file.h

diff --git a/bsd/sys/file.h b/bsd/sys/file.h
index 9ddd3affe111d925eb2b15f32b0714ccadafadf6..711ba77c5ae4d563da0cd4ba9a958c10311482d4 100644 (file)
--- a/bsd/sys/file.h
+++ b/bsd/sys/file.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
@@ -58,15 +58,18 @@
 #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.
@@ -85,30 +88,99 @@ struct file {
        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,
-                                           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_ */