From: CSRG <csrg@ucbvax.Berkeley.EDU>
Date: Thu, 2 Apr 1981 07:37:16 +0000 (-0800)
Subject: BSD 4_1_snap development
X-Git-Tag: BSD-4_1_snap~404
X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/commitdiff_plain/c3178f6754aa30f9f1349b5dc8a4205308bae7f0

BSD 4_1_snap development
Work on file sys/h/file.h

Synthesized-from: CSRG/cd1/4.1.snap
---

diff --git a/sys/h/file.h b/sys/h/file.h
new file mode 100644
index 0000000000..9546c6b360
--- /dev/null
+++ b/sys/h/file.h
@@ -0,0 +1,35 @@
+/*	file.h	4.5	81/03/09	*/
+
+/*
+ * One file structure is allocated
+ * for each open/creat/pipe call.
+ * Main use is to hold the read/write
+ * pointer associated with each open
+ * file.
+ */
+struct	file
+{
+	short	f_flag;
+	short	f_count;		/* reference count */
+	struct inode *f_inode;		/* pointer to inode structure */
+	union {
+		off_t	f_offset;	/* read/write character pointer */
+		struct chan *f_chan;	/* mpx channel pointer */
+	} f_un;
+};
+
+#ifdef	KERNEL
+struct	file *file, *fileNFILE;	/* the file table itself */
+int	nfile;
+
+struct	file *getf();
+struct	file *falloc();
+#endif
+
+/* flags */
+#define	FREAD	01
+#define	FWRITE	02
+#define	FPIPE	04
+#define	FMPX	010
+#define	FMPY	020
+#define	FMP	030