Hacked I/O system so that ports set/clear their

fd's CLOEXEC bit when they become unrevealed/revealed.

scsh/bsd/bufpol.scm

@@ -7,12 +7,7 @@
 ;;; These constants are not likely to change from stdio lib to stdio lib,
 ;;; but you need to check when you do a port.
 
-(define-syntax define-bufpols
+(define-enum-constants bufpol
-  (syntax-rules ()
-    ((define-bufpols form ...)
-     (begin (define-enum-constant "bufpol" . form) ...))))
-
-(define-bufpols
   (block	0)	; _IOFBF
   (line		1)	; _IOLBF
   (none		2))	; _IONBF

scsh/bsd/errno.scm

@@ -5,14 +5,9 @@
 ;;; These are the correct values for BSD4.4-Lite-based systems
 ;;; such as NetBSD 1.0 and FreeBSD 2.0.
 
-(define-syntax define-errnos
-  (syntax-rules ()
-    ((define-errnos form ...)
-     (begin (define-enum-constant "errno" . form) ...))))
-
 (define errno/2big 7) ; 2big is not a legit Scheme symbol. Lose, lose.
 
-(define-errnos
+(define-enum-constants errno
 ;; POSIX:
   (perm		1)		; Operation not permitted
   (noent	2)		; No such file or directory

scsh/bsd/fdflags.scm

@@ -2,12 +2,7 @@
 ;;; Copyright (c) 1993 by Olin Shivers.
 ;;; Copyright (c) 1994 by Brian D. Carlstrom
 
-(define-syntax define-open-flags
+(define-enum-constants open
-  (syntax-rules ()
-    ((define-opens form ...)
-     (begin (define-enum-constant "open" . form) ...))))
-
-(define-open-flags
   ;; POSIX
   (read			#x0000)
   (write		#x0001)
@@ -16,8 +11,8 @@
   (append		#x0008)		; set append mode
   
   ;; BSD4.4-Lite
-  (shlock		#x0010)		; open with shared file lock
+  (shared-lock		#x0010)		; open with shared file lock
-  (exlock		#x0020)		; open with exclusive file lock
+  (exclusive-lock	#x0020)		; open with exclusive file lock
   (async		#x0040)		; signal pgrep when data ready
   (fsync 	        #x0080)		; synchronus writes
 
@@ -27,60 +22,34 @@
   (exclusive            #x0800)		; error if already exists
   (no-control-tty	#x0000))	; don't assign controlling terminal
 
-
-
 (define open/access-mask
   (bitwise-ior open/read
 	       (bitwise-ior open/write open/read+write)))
 
-;;;; fcntl
+;;; fcntl() commands
-;;;; Rough sketch only. Will define a separate proc for each fcntl command.
+(define-enum-constants fcntl
-;
+  (dup-fdes			0)      ; F_DUPFD
-;;;; fcntl commands
+  (get-fdes-flags		1)      ; F_GETFD
-;dup
+  (set-fdes-flags		2)      ; F_SETFD
-;
+  (get-status-flags		3)      ; F_GETFL
-;get-flags	; Only gives close-on-exec bit.
+  (set-status-flags		4)      ; F_SETFL
-;set-flags
+  (get-owner			5)	; F_GETOWN (Not POSIX)
-;
+  (set-owner			6)	; F_SETOWN (Not POSIX)
-;get-status	; Returns open flags + get-status flags (below)
+  (get-record-lock		7)	; F_GETLK
-;set-status	; Can set: append, sync, async, nbio, nonblocking, no-delay
+  (set-record-lock-noblock	8)	; F_SETLK
-;
+  (set-record-lock		9))	; F_SETLKW
-;get-lock
-;set-lock
-;nonblocking-set-lock
-;
-;get-record-lock
-;set-record-lock
-;
-;get-owner			; Not POSIX
-;set-owner			; Not POSIX
-;remote-set-lock		; Not POSIX
-;nonblocking-remote-set-lock	; Not POSIX
-;remote-get-lock		; Not POSIX
-;
-;;;; Flags
-;
-;close-on-exec	; get-flags
-;
-;async		; get-status
-;no-delay	; get-status
-;nbio		; get-status
-;
-;;; These are internal; they are not part of the supported scsh interface.
 
-(define fcntl/close-on-exec 		1)
+;;; fcntl fdes-flags (F_GETFD)
 
-(define fcntl/dupfd			0)
+(define fdflags/close-on-exec 		1)
-(define fcntl/get-fd-flags		1)
-(define fcntl/set-fd-flags		2)
-(define fcntl/get-file-flags		3)
-(define fcntl/set-file-flags		4)
-(define fcntl/get-owner			5)	; Not POSIX
-(define fcntl/set-owner			6)	; Not POSIX
-(define fcntl/get-record-lock		7)	; F_GETLK
-(define fcntl/set-record-lock-noblock	8)	; F_SETLK
-(define fcntl/set-record-lock		9)	; F_SETLKW
 
-(define lock/read	1)	; F_RDLCK
+;;; fcntl status-flags (F_GETFL)
-(define lock/release	2)	; F_UNLCK
+;;; Mostly, these are OPEN/... flags, like OPEN/APPEND.
-(define lock/write	3)	; F_WRLCK
+;;; (define fdstatus/... ...)
+
+;;; fcntl lock values.
+
+(define-enum-constants lock
+  (read		1)	; F_RDLCK
+  (release	2)	; F_UNLCK
+  (write	3))	; F_WRLCK

scsh/bsd/signals.scm

@@ -2,12 +2,7 @@
 ;;; Copyright (c) 1994 by Olin Shivers.
 ;;; Copyright (c) 1994 by Brian D. Carlstrom.
 
-(define-syntax define-signals
+(define-enum-constants signal
-  (syntax-rules ()
-    ((define-signals form ...)
-     (begin (define-enum-constant "signal" . form) ...))))
-
-(define-signals
   ;; POSIX
   (hup	1)	; hangup 
   (int	2)	; interrupt 
@@ -71,3 +66,9 @@
   (usr1 30)	; user defined signal 1 
   (usr2 31)	; user defined signal 2 
   )
+
+(define signals-ignored-by-default
+  (list signal/alrm signal/hup signal/int signal/quit	; These are
+	signal/term signal/usr1 signal/usr2		; Posix.
+	signal/info signal/prof signal/vtalrm	; These are
+	signal/xcpu signal/xfsz signal/io))	; BSD-specific.