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compiler/src/lib/ulm/x86_64/ulmSysStat.Mod
Norayr Chilingarian 13ea84f2cd SysStat, SysConversions ported 
Former-commit-id: d2c954e16f
2013-11-05 22:05:20 +04:00

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(* Ulm's Oberon Library
Copyright (C) 1989-1994 by University of Ulm, SAI, D-89069 Ulm, Germany
----------------------------------------------------------------------------
Ulm's Oberon Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either version
2 of the License, or (at your option) any later version.
Ulm's Oberon Library is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
----------------------------------------------------------------------------
E-mail contact: oberon@mathematik.uni-ulm.de
----------------------------------------------------------------------------
$Id: SysStat.om,v 1.3 2000/11/12 13:02:09 borchert Exp $
----------------------------------------------------------------------------
$Log: SysStat.om,v $
Revision 1.3 2000/11/12 13:02:09 borchert
door file type added
Revision 1.2 2000/11/12 12:48:07 borchert
- conversion adapted to Solaris 2.x
- Lstat added
Revision 1.1 1994/02/23 08:00:48 borchert
Initial revision
----------------------------------------------------------------------------
AFB 9/89
----------------------------------------------------------------------------
*)
MODULE ulmSysStat;
(* examine inode: stat(2) and fstat(2) *)
IMPORT RelatedEvents := ulmRelatedEvents, Sys := ulmSys, SYS := SYSTEM, uSYS := ulmSYSTEM, SysConversions := ulmSysConversions, SysErrors := ulmSysErrors,
SysTypes := ulmSysTypes;
CONST
(* file mode:
bit 0 = 1<<0 bit 31 = 1<<31
user group other
3 1 1111 11
1 ... 6 5432 109 876 543 210
+--------+------+-----+-----+-----+-----+
| unused | type | sst | rwx | rwx | rwx |
+--------+------+-----+-----+-----+-----+
*)
type* = {12..15};
prot* = {0..8};
(* file types; example: (stat.mode * type = dir) *)
reg* = {15}; (* regular *)
dir* = {14}; (* directory *)
chr* = {13}; (* character special *)
fifo* = {12}; (* fifo *)
blk* = {13..14}; (* block special *)
symlink* = {13, 15}; (* symbolic link *)
socket* = {14, 15}; (* socket *)
(* special *)
setuid* = 11; (* set user id on execution *)
setgid* = 10; (* set group id on execution *)
savetext* = 9; (* save swapped text even after use *)
(* protection *)
uread* = 8; (* read permission owner *)
uwrite* = 7; (* write permission owner *)
uexec* = 6; (* execute/search permission owner *)
gread* = 5; (* read permission group *)
gwrite* = 4; (* write permission group *)
gexec* = 3; (* execute/search permission group *)
oread* = 2; (* read permission other *)
owrite* = 1; (* write permission other *)
oexec* = 0; (* execute/search permission other *)
(* example for "r-xr-x---": (read + exec) * (owner + group) *)
owner* = {uread, uwrite, uexec};
group* = {gread, gwrite, gexec};
other* = {oread, owrite, oexec};
read* = {uread, gread, oread};
write* = {uwrite, gwrite, owrite};
exec* = {uexec, gexec, oexec};
rwx* = prot;
TYPE
StatRec* = (* result of stat(2) and fstat(2) *)
RECORD
device*: SysTypes.Device; (* ID of device containing
a directory entry for this file *)
inode*: SysTypes.Inode; (* inode number *)
nlinks*: LONGINT(*INTEGER*); (* number of links *)
mode*: SET; (* file mode; see mknod(2) *)
uid*: INTEGER; (* user id of the file's owner *)
gid*: INTEGER; (* group id of the file's group *)
rdev*: SysTypes.Device; (* ID of device
this entry is defined only for
character special or block
special files
*)
size*: SysTypes.Offset; (* file size in bytes *)
blksize*: LONGINT; (* preferred blocksize *)
blocks*: LONGINT; (* # of blocks allocated *)
atime*: SysTypes.Time; (* time of last access *)
mtime*: SysTypes.Time; (* time of last data modification *)
ctime*: SysTypes.Time; (* time of last file status change *)
END;
(* StatRec* = (* result of stat(2) and fstat(2) *)
RECORD
device*: SysTypes.Device; (* ID of device containing
a directory entry for this file *)
inode*: SysTypes.Inode; (* inode number *)
nlinks*: LONGINT; (* number of links *)
mode*: INTEGER(*SET*); (* file mode; see mknod(2) *)
uid*: INTEGER; (* user id of the file's owner *)
gid*: INTEGER; (* group id of the file's group *)
pad0: INTEGER;
rdev*: SysTypes.Device; (* ID of device
this entry is defined only for
character special or block
special files
*)
size*: SysTypes.Offset; (* file size in bytes *)
blksize*: LONGINT; (* preferred blocksize *)
blocks*: LONGINT; (* # of blocks allocated *)
atime*: SysTypes.Time; (* time of last access *)
atimences* : LONGINT;
mtime*: SysTypes.Time; (* time of last data modification *)
mtimensec* : LONGINT;
ctime*: SysTypes.Time; (* time of last file status change *)
ctimensec* : LONGINT;
unused0*, unused1*, unused2*: LONGINT;
END;
*)
(* Linux kernel struct stat (2.2.17)
struct stat {
unsigned short st_dev;
unsigned short __pad1;
unsigned long st_ino;
unsigned short st_mode;
unsigned short st_nlink;
unsigned short st_uid;
unsigned short st_gid;
unsigned short st_rdev;
unsigned short __pad2;
unsigned long st_size;
unsigned long st_blksize;
unsigned long st_blocks;
unsigned long st_atime;
unsigned long __unused1;
unsigned long st_mtime;
unsigned long __unused2;
unsigned long st_ctime;
unsigned long __unused3;
unsigned long __unused4;
unsigned long __unused5;
};
*)
CONST
statbufsize = 144(*64*); (* see <sys/stat.h> *) (* sizeof struct stat gives us 144 on x86_64 and 88 or x86; -- noch *)
TYPE
UnixStatRec = ARRAY statbufsize OF SYS.BYTE;
CONST
statbufconv =
(*"is=dev/-s=pad1/ll=ino/Ss=mode/4*is=nlink+uid+gid+rdev/-s=pad2/ll=size/2*ll=blksize,blocks/il=atime/-l/il=mtime/-l/il=ctime/3*-l";*)
"lL=dev/lL=ino/lL=nlink/Su=mode/2*iu=uid+gid/-i=pad0/lL=rdev/ll=size/2*ll=blksize,blocks/lL=atime/-l/lL=mtime/-l/lL=ctime/3*-l"; (* noch *)
VAR
statbuffmt: SysConversions.Format;
PROCEDURE Stat*(path: ARRAY OF CHAR; VAR buf: StatRec;
errors: RelatedEvents.Object) : BOOLEAN;
VAR
d0, d1, d2: LONGINT;
origbuf: UnixStatRec;
BEGIN
IF uSYS.UNIXCALL(Sys.newstat, d0, d1, SYS.ADR(path), SYS.ADR(origbuf), d2) THEN
SysConversions.ByFmtFromC(origbuf, buf, statbuffmt);
RETURN TRUE
ELSE
SysErrors.Raise(errors, d0, Sys.newstat, path);
RETURN FALSE
END;
END Stat;
(* commented temporarily, it is used only in FTPUnixDirLister module *) (*
PROCEDURE Lstat*(path: ARRAY OF CHAR; VAR buf: StatRec;
errors: RelatedEvents.Object) : BOOLEAN;
VAR
d0, d1: INTEGER;
origbuf: UnixStatRec;
BEGIN
IF SYS.UNIXCALL(Sys.newlstat, d0, d1, SYS.ADR(path), SYS.ADR(origbuf)) THEN
SysConversions.ByFmtFromC(origbuf, buf, statbuffmt);
RETURN TRUE
ELSE
SysErrors.Raise(errors, d0, Sys.newlstat, path);
RETURN FALSE
END;
END Lstat;
*)
PROCEDURE Fstat*(fd: SysTypes.File; VAR buf: StatRec;
errors: RelatedEvents.Object) : BOOLEAN;
VAR
d0, d1, d2: LONGINT;
origbuf: UnixStatRec;
BEGIN
IF uSYS.UNIXCALL(Sys.newfstat, d0, d1, fd, SYS.ADR(origbuf), d2) THEN
SysConversions.ByFmtFromC(origbuf, buf, statbuffmt);
RETURN TRUE
ELSE
SysErrors.Raise(errors, d0, Sys.newfstat, "");
RETURN FALSE
END;
END Fstat;
BEGIN
SysConversions.Compile(statbuffmt, statbufconv);
END ulmSysStat.
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