From 6ac4c9900ff18eba3ea5f88fd31eca385f24d2fe Mon Sep 17 00:00:00 2001
From: Slava Pestov <slava@factorcode.org>
Date: Wed, 30 Mar 2005 00:58:22 +0000
Subject: [PATCH] comitting initial unix I/O rewrite work

---
 library/bootstrap/boot-stage3.factor |  2 +-
 library/unix/files.factor            | 31 ++++++++++
 library/unix/io.factor               | 15 +++++
 library/unix/syscalls.factor         | 92 ++++++++++++++++++++++++++++
 4 files changed, 139 insertions(+), 1 deletion(-)
 create mode 100644 library/unix/files.factor
 create mode 100644 library/unix/io.factor
 create mode 100644 library/unix/syscalls.factor

diff --git a/library/bootstrap/boot-stage3.factor b/library/bootstrap/boot-stage3.factor
index 757f707cf8..181c833d73 100644
--- a/library/bootstrap/boot-stage3.factor
+++ b/library/bootstrap/boot-stage3.factor
@@ -22,6 +22,7 @@ t [
     "/library/in-thread.factor"
     "/library/random.factor"
 
+    "/library/io/buffer.factor"
     "/library/io/network.factor"
     "/library/io/logging.factor"
     "/library/io/stdio-binary.factor"
@@ -102,7 +103,6 @@ t [
 ] pull-in
 
 os "win32" = [
-    "/library/io/buffer.factor"
     "/library/win32/win32-io.factor"
     "/library/win32/win32-errors.factor"
     "/library/win32/winsock.factor"
diff --git a/library/unix/files.factor b/library/unix/files.factor
new file mode 100644
index 0000000000..175ccfe847
--- /dev/null
+++ b/library/unix/files.factor
@@ -0,0 +1,31 @@
+! Copyright (C) 2005 Slava Pestov.
+! See http://factor.sf.net/license.txt for BSD license.
+IN: files
+USING: alien kernel math namespaces ;
+
+: cd ( dir -- )
+    "void" "libc" "chdir" [ "char*" ] alien-invoke ;
+
+: stat ( path -- [ dir? mode size mtime ] )
+    <stat> tuck sys-stat 0 < [
+        drop f
+    ] [
+        [
+            dup stat-mode dup S_ISDIR ,
+            S_IFMT bitnot bitand ,
+            dup stat-size ,
+            stat-mtime ,
+        ] make-list
+    ] ifte ;
+
+: (directory) ( path -- list )
+    sys-opendir [
+        [
+            [ dirent-name , ] [ dup sys-readdir null>f ] while
+        ] make-list swap sys-closedir
+    ] [
+        [ ]
+    ] ifte* ;
+
+: cwd ( -- str )
+    <string-box> dup 255 sys-getcwd io-error string-box-value ;
diff --git a/library/unix/io.factor b/library/unix/io.factor
new file mode 100644
index 0000000000..2de29ae793
--- /dev/null
+++ b/library/unix/io.factor
@@ -0,0 +1,15 @@
+! Copyright (C) 2005 Slava Pestov.
+! See http://factor.sf.net/license.txt for BSD license.
+IN: io-internals
+USING: errors kernel math ;
+
+: file-mode OCT: 0600 ;
+
+: io-error ( n -- ) 0 < [ errno strerror throw ] when ;
+
+: open-read ( path -- fd )
+    O_RDONLY file-mode sys-open dup io-error ;
+
+: open-write ( path -- fd )
+    O_WRONLY O_CREAT bitor O_TRUNC bitor file-mode sys-open
+    dup io-error ;
diff --git a/library/unix/syscalls.factor b/library/unix/syscalls.factor
new file mode 100644
index 0000000000..ee579ea48a
--- /dev/null
+++ b/library/unix/syscalls.factor
@@ -0,0 +1,92 @@
+! Copyright (C) 2005 Slava Pestov.
+! See http://factor.sf.net/license.txt for BSD license.
+IN: io-internals
+USING: alien errors kernel math namespaces ;
+
+ALIAS: ulonglong off_t
+ALIAS: long ssize_t
+ALIAS: ulong size_t
+
+BEGIN-STRUCT: stat
+    FIELD: uint dev
+    FIELD: uint ino
+    FIELD: ushort mode
+    FIELD: ushort nlink
+    FIELD: uint uid
+    FIELD: uint gid
+    FIELD: uint rdev
+    FIELD: ulong atime
+    FIELD: ulong atimensec
+    FIELD: ulong mtime
+    FIELD: ulong mtimensec
+    FIELD: ulong ctime
+    FIELD: ulong ctimensec
+    FIELD: off_t size
+    FIELD: off_t blocks
+    FIELD: uint blksize
+    FIELD: uint flags
+    FIELD: uint gen
+    
+    FIELD: uint padding
+    FIELD: ulonglong padding
+    FIELD: ulonglong padding
+END-STRUCT
+
+: S_IFMT OCT: 0170000 ; inline
+: S_ISDIR ( m -- ? ) OCT: 0170000 bitand OCT: 0040000 = ; inline
+
+: sys-stat ( path stat -- n )
+    "int" "libc" "stat" [ "char*" "stat*" ] alien-invoke ;
+
+: sys-opendir ( path -- dir* )
+    "void*" "libc" "opendir" [ "char*" ] alien-invoke ;
+
+BEGIN-STRUCT: dirent
+    FIELD: uint fileno
+    FIELD: ushort reclen
+    FIELD: uchar type
+    FIELD: uchar namlen
+    FIELD: uchar256 name
+END-STRUCT
+
+: sys-readdir ( dir* -- dirent* )
+    "dirent*" "libc" "readdir" [ "void*" ] alien-invoke ;
+
+: sys-closedir ( dir* -- )
+    "void" "libc" "closedir" [ "void*" ] alien-invoke ;
+
+BEGIN-STRUCT: string-box
+    FIELD: uchar256 value
+END-STRUCT
+
+: errno ( -- n )
+    "int" "libc" "errno" alien-global ;
+
+: strerror ( n -- str )
+    "char*" "libc" "strerror" [ "int" ] alien-invoke ;
+
+: sys-getcwd ( str len -- n )
+    "int" "libc" "getcwd" [ "string-box*" "uint" ] alien-invoke ;
+
+: O_RDONLY  HEX: 0000 ;
+: O_WRONLY  HEX: 0001 ;
+: O_RDWR    HEX: 0002 ;
+: O_CREAT   HEX: 0200 ;
+: O_TRUNC   HEX: 0400 ;
+
+: sys-open ( path flags prot -- fd )
+    "int" "libc" "open" [ "char*" "int" "int" ] alien-invoke ;
+
+: sys-close ( fd -- )
+    "void" "libc" "close" [ "int" ] alien-invoke ;
+
+: sys-read ( fd buf nbytes -- n )
+    "ssize_t" "libc" "read" [ "int" "void*" "size_t" ] alien-invoke ;
+
+: sys-write ( fd buf nbytes -- n )
+    "ssize_t" "libc" "write" [ "int" "void*" "size_t" ] alien-invoke ;
+
+: MSG_OOB HEX: 1 ;
+
+: sys-recv ( fd buf nbytes flags -- )
+    "ssize_t" "libc" "read" [ "int" "void*" "size_t" "int" ] alien-invoke ;