+#define FREAD 0x001 /* descriptor read/receive'able */
+#define FWRITE 0x002 /* descriptor write/send'able */
+#define FAPPEND 0x004 /* append on each write */
+/* the following defines the bits that users can set in f_flag */
+#define FMODES (FREAD|FWRITE|FAPPEND)
+#endif
+
+/*
+ * User visible desriptor attributes.
+ * These are supplied at open or flock time.
+ * FRDONLY, FWRONLY, and FRDWR are
+ * converted to FREAD and FWRITE on open.
+ */
+#define FRDONLY 0x000 /* open for reading only */
+#define FWRONLY 0x001 /* open for writing only */
+#define FRDWR 0x002 /* open for reading and writing */
+#define FAPPEND 0x004 /* append on each write */
+#define FRDLOCK 0x008 /* apply read lock */
+#define FWRLOCK 0x010 /* apply write lock */
+#define FUNLOCK 0x100 /* release all locks */
+#define FCREATE 0x200 /* create file if nonexistant */
+#define FTRUNCATE 0x400 /* truncate file to size 0 on open */
+#define FNBLOCK 0x800 /* don't block on open */
+
+/* these are for 3.0 "compatibility" */
+#define O_RDONLY FRDONLY /* open for read */
+#define O_WRONLY FWRONLY /* open for writing */
+#define O_RDWR FRDWR /* open for read & write */
+#define O_NDELAY FNBLOCK /* non-blocking I/O */
+#define O_APPEND FAPPEND /* append */
+#define O_CREAT FCREATE /* open with file create */
+#define O_TRUNC FTRUNCATE /* open with truncation */
+#define O_EXCL FWRLOCK /* exclusive open */
+
+/* flags supplied to access call */
+#define FACCESS_EXISTS 0x0 /* does file exist */
+#define FACCESS_EXECUTE 0x1 /* is it executable by caller */
+#define FACCESS_WRITE 0x2 /* writable by caller */
+#define FACCESS_READ 0x4 /* readable by caller */
+
+/* flags supplies to lseek call */
+#define FSEEK_ABSOLUTE 0x0 /* absolute offset */
+#define FSEEK_RELATIVE 0x1 /* relative to current offset */
+#define FSEEK_EOF 0x2 /* relative to end of file */
+
+/* file types which may be specified to mknod */
+#define FTYPE_CDEV 0x2000 /* character special device */
+#define FTYPE_DIR 0x4000 /* directory */
+#define FTYPE_BDEV 0x8000 /* block special device */
projects / unix-history / commitdiff