Add original unix v6

2018-01-27 22:35:41 +09:00
commit 2c7099ee50
664 changed files with 106254 additions and 0 deletions
@@ -0,0 +1,93 @@
+/*
+ * The user structure.
+ * One allocated per process.
+ * Contains all per process data
+ * that doesn't need to be referenced
+ * while the process is swapped.
+ * The user block is USIZE*64 bytes
+ * long; resides at virtual kernel
+ * loc 140000; contains the system
+ * stack per user; is cross referenced
+ * with the proc structure for the
+ * same process.
+ */
+struct user
+{
+	int	u_rsav[2];		/* save r5,r6 when exchanging stacks */
+	int	u_fsav[25];		/* save fp registers */
+					/* rsav and fsav must be first in structure */
+	char	u_segflg;		/* flag for IO; user or kernel space */
+	char	u_error;		/* return error code */
+	char	u_uid;			/* effective user id */
+	char	u_gid;			/* effective group id */
+	char	u_ruid;			/* real user id */
+	char	u_rgid;			/* real group id */
+	int	u_procp;		/* pointer to proc structure */
+	char	*u_base;		/* base address for IO */
+	char	*u_count;		/* bytes remaining for IO */
+	char	*u_offset[2];		/* offset in file for IO */
+	int	*u_cdir;		/* pointer to inode of current directory */
+	char	u_dbuf[DIRSIZ];		/* current pathname component */
+	char	*u_dirp;		/* current pointer to inode */
+	struct	{			/* current directory entry */
+		int	u_ino;
+		char	u_name[DIRSIZ];
+	} u_dent;
+	int	*u_pdir;		/* inode of parent directory of dirp */
+	int	u_uisa[16];		/* prototype of segmentation addresses */
+	int	u_uisd[16];		/* prototype of segmentation descriptors */
+	int	u_ofile[NOFILE];	/* pointers to file structures of open files */
+	int	u_arg[5];		/* arguments to current system call */
+	int	u_tsize;		/* text size (*64) */
+	int	u_dsize;		/* data size (*64) */
+	int	u_ssize;		/* stack size (*64) */
+	int	u_sep;			/* flag for I and D separation */
+	int	u_qsav[2];		/* label variable for quits and interrupts */
+	int	u_ssav[2];		/* label variable for swapping */
+	int	u_signal[NSIG];		/* disposition of signals */
+	int	u_utime;		/* this process user time */
+	int	u_stime;		/* this process system time */
+	int	u_cutime[2];		/* sum of childs' utimes */
+	int	u_cstime[2];		/* sum of childs' stimes */
+	int	*u_ar0;			/* address of users saved R0 */
+	int	u_prof[4];		/* profile arguments */
+	char	u_intflg;		/* catch intr from sys */
+					/* kernel stack per user
+					 * extends from u + USIZE*64
+					 * backward not to reach here
+					 */
+} u;
+
+/* u_error codes */
+#define	EFAULT	106
+#define	EPERM	1
+#define	ENOENT	2
+#define	ESRCH	3
+#define	EINTR	4
+#define	EIO	5
+#define	ENXIO	6
+#define	E2BIG	7
+#define	ENOEXEC	8
+#define	EBADF	9
+#define	ECHILD	10
+#define	EAGAIN	11
+#define	ENOMEM	12
+#define	EACCES	13
+#define	ENOTBLK	15
+#define	EBUSY	16
+#define	EEXIST	17
+#define	EXDEV	18
+#define	ENODEV	19
+#define	ENOTDIR	20
+#define	EISDIR	21
+#define	EINVAL	22
+#define	ENFILE	23
+#define	EMFILE	24
+#define	ENOTTY	25
+#define	ETXTBSY	26
+#define	EFBIG	27
+#define	ENOSPC	28
+#define	ESPIPE	29
+#define	EROFS	30
+#define	EMLINK	31
+#define	EPIPE	32