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{
$Id$
This file is part of the Free Pascal run time library.
Copyright (c) 1999-2000 by Michael Van Canneyt,
BSD parts (c) 2000 by Marco van de Voort
members of the Free Pascal development team.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program 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.
**********************************************************************}
Unit Linux;
Interface
{ Get Types and Constants }
{$i sysconst.inc}
{$i systypes.inc}
{ Get System call numbers and error-numbers}
{$i sysnr.inc}
{$i errno.inc}
{$I signal.inc}
var
ErrNo,
LinuxError : Longint;
{********************
Process
********************}
const
{ For getting/setting priority }
Prio_Process = 0;
Prio_PGrp = 1;
Prio_User = 2;
{$ifdef Solaris}
WNOHANG = $100;
WUNTRACED = $4;
{$ELSE}
WNOHANG = $1;
WUNTRACED = $2;
__WCLONE = $80000000;
{$ENDIF}
{********************
File
********************}
Const
P_IN = 1;
P_OUT = 2;
Const
LOCK_SH = 1;
LOCK_EX = 2;
LOCK_UN = 8;
LOCK_NB = 4;
Type
Tpipe = array[1..2] of longint;
pglob = ^tglob;
tglob = record
name : pchar;
next : pglob;
end;
ComStr = String[255];
PathStr = String[255];
DirStr = String[255];
NameStr = String[255];
ExtStr = String[255];
const
{ For testing access rights }
R_OK = 4;
W_OK = 2;
X_OK = 1;
F_OK = 0;
{ For File control mechanism }
F_GetFd = 1;
F_SetFd = 2;
F_GetFl = 3;
F_SetFl = 4;
{$ifdef Solaris}
F_DupFd = 0;
F_Dup2Fd = 9;
F_GetOwn = 23;
F_SetOwn = 24;
F_GetLk = 14;
F_SetLk = 6;
F_SetLkW = 7;
F_FreeSp = 11;
{$else}
F_GetLk = 5;
F_SetLk = 6;
F_SetLkW = 7;
F_SetOwn = 8;
F_GetOwn = 9;
{$endif}
{********************
IOCtl(TermIOS)
********************}
{Is too freebsd/Linux specific}
{$I termios.inc}
{********************
Info
********************}
Type
UTimBuf = packed record{in BSD array[0..1] of timeval, but this is
backwards compatible with linux version}
actime,
{$ifdef BSD}
uactime, {BSD Micro seconds}
{$endif}
modtime
{$ifdef BSD}
,
umodtime {BSD Micro seconds}
{$endif}
: longint;
end;
UTimeBuf=UTimBuf;
TUTimeBuf=UTimeBuf;
PUTimeBuf=^UTimeBuf;
TSysinfo = packed record
uptime : longint;
loads : array[1..3] of longint;
totalram,
freeram,
sharedram,
bufferram,
totalswap,
freeswap : longint;
procs : integer;
s : string[18];
end;
PSysInfo = ^TSysInfo;
{******************************************************************************
Procedure/Functions
******************************************************************************}
{$ifdef bsd}
function Do_SysCall(sysnr:longint):longint;
function Do_Syscall(sysnr,param1:integer):longint;
function Do_SysCall(sysnr,param1:LONGINT):longint;
function Do_SysCall(sysnr,param1,param2:LONGINT):longint;
function Do_SysCall(sysnr,param1,param2,param3:LONGINT):longint;
function Do_SysCall(sysnr,param1,param2,param3,param4:LONGINT):longint;
function Do_SysCall(sysnr,param1,param2,param3,param4,param5:LONGINT):longint;
function Do_SysCall(sysnr,param1,param2,param3,param4,param5,param6:LONGINT):longint;
function Do_SysCall(sysnr,param1,param2,param3,param4,param5,param6,param7:LONGINT):longint;
{$else}
Function SysCall(callnr:longint;var regs:SysCallregs):longint;
{$endif}
{**************************
Time/Date Handling
***************************}
var
tzdaylight : boolean;
tzseconds : longint;
tzname : array[boolean] of pchar;
{ timezone support }
procedure GetLocalTimezone(timer:longint;var leap_correct,leap_hit:longint);
procedure GetLocalTimezone(timer:longint);
procedure ReadTimezoneFile(fn:string);
function GetTimezoneFile:string;
Procedure GetTimeOfDay(var tv:timeval);
Function GetTimeOfDay:longint;
Function GetEpochTime: longint;
Procedure EpochToLocal(epoch:longint;var year,month,day,hour,minute,second:Word);
Function LocalToEpoch(year,month,day,hour,minute,second:Word):Longint;
procedure GetTime(var hour,min,sec,msec,usec:word);
procedure GetTime(var hour,min,sec,sec100:word);
procedure GetTime(var hour,min,sec:word);
Procedure GetDate(Var Year,Month,Day:Word);
Procedure GetDateTime(Var Year,Month,Day,hour,minute,second:Word);
function SetTime(Hour,Min,Sec:word) : Boolean;
function SetDate(Year,Month,Day:Word) : Boolean;
function SetDateTime(Year,Month,Day,hour,minute,second:Word) : Boolean;
{**************************
Process Handling
***************************}
function CreateShellArgV(const prog:string):ppchar;
function CreateShellArgV(const prog:Ansistring):ppchar;
procedure FreeShellArgV(p:ppchar);
Procedure Execve(Path: pathstr;args:ppchar;ep:ppchar);
Procedure Execve(Path: AnsiString;args:ppchar;ep:ppchar);
Procedure Execve(path: pchar;args:ppchar;ep:ppchar);
Procedure Execv(const path:pathstr;args:ppchar);
Procedure Execv(const path: AnsiString;args:ppchar);
Procedure Execvp(Path: Pathstr;Args:ppchar;Ep:ppchar);
Procedure Execvp(Path: AnsiString; Args:ppchar;Ep:ppchar);
Procedure Execl(const Todo: String);
Procedure Execl(const Todo: Ansistring);
Procedure Execle(Todo: String;Ep:ppchar);
Procedure Execle(Todo: AnsiString;Ep:ppchar);
Procedure Execlp(Todo: string;Ep:ppchar);
Procedure Execlp(Todo: Ansistring;Ep:ppchar);
Function Shell(const Command:String):Longint;
Function Shell(const Command:AnsiString):Longint;
Function Fork:longint;
{Clone for FreeBSD is copied from the LinuxThread port, and rfork based}
function Clone(func:TCloneFunc;sp:pointer;flags:longint;args:pointer):longint;
Procedure ExitProcess(val:longint);
Function WaitPid(Pid:longint;Status:pointer;Options:Longint):Longint; {=>PID (Status Valid), 0 (No Status), -1: Error, special case errno=EINTR }
Function WaitProcess(Pid:longint):Longint; { like WaitPid(PID,@result,0) Handling of Signal interrupts (errno=EINTR), returning the Exitcode of Process (>=0) or -Status if terminated}
Procedure Nice(N:integer);
{$ifdef bsd}
Function GetPriority(Which,Who:longint):longint;
procedure SetPriority(Which,Who,What:longint);
{$else}
Function GetPriority(Which,Who:Integer):integer;
Procedure SetPriority(Which:Integer;Who:Integer;What:Integer);
{$endif}
Function GetPid:LongInt;
Function GetPPid:LongInt;
Function GetUid:Longint;
Function GetEUid:Longint;
Function GetGid:Longint;
Function GetEGid:Longint;
{$ifdef solaris}
// Set the real userid/groupid (uid/gid from calling process)
Function SetUid(aUID:Longint):Boolean;
Function SetGid(aGID:Longint):Boolean;
// Set the real and effective userid/groupid (like setuid/setgid bit in file permissions)
function SetreUid(aRealUID,aEffUid:Longint):Boolean; overload;
function SetreUid(aUID:Longint):Boolean;overload;
function SetreGid(aRealGid,aEffGid:Longint):Boolean; overload;
function SetreGid(aGid:Longint):Boolean;overload;
{$endif}
{**************************
File Handling
***************************}
Function fdOpen(pathname:string;flags:longint):longint;
Function fdOpen(pathname:string;flags,mode:longint):longint;
Function fdOpen(pathname:pchar;flags:longint):longint;
Function fdOpen(pathname:pchar;flags,mode:longint):longint;
Function fdClose(fd:longint):boolean;
Function fdRead(fd:longint;var buf;size:longint):longint;
Function fdWrite(fd:longint;const buf;size:longint):longint;
Function fdTruncate(fd,size:longint):boolean;
Function fdSeek (fd,pos,seektype :longint): longint;
Function fdFlush (fd : Longint) : Boolean;
Function Link(OldPath,NewPath:pathstr):boolean;
Function SymLink(OldPath,NewPath:pathstr):boolean;
Function ReadLink(name,linkname:pchar;maxlen:longint):longint;
Function ReadLink(name:pathstr):pathstr;
Function UnLink(Path:pathstr):boolean;
Function UnLink(Path:pchar):Boolean;
Function FReName (OldName,NewName : Pchar) : Boolean;
Function FReName (OldName,NewName : String) : Boolean;
Function Chown(path:pathstr;NewUid,NewGid:longint):boolean;
Function Chmod(path:pathstr;Newmode:longint):boolean;
Function Utime(path:pathstr;utim:utimebuf):boolean;
{$ifdef BSD}
Function Access(Path:Pathstr ;mode:longint):boolean;
{$else}
Function Access(Path:Pathstr ;mode:integer):boolean;
{$endif}
Function Umask(Mask:Integer):integer;
Function Flock (fd,mode : longint) : boolean;
Function Flock (var T : text;mode : longint) : boolean;
Function Flock (var F : File;mode : longint) : boolean;
Function FStat(Path:Pathstr;Var Info:stat):Boolean;
Function FStat(Fd:longint;Var Info:stat):Boolean;
Function FStat(var F:Text;Var Info:stat):Boolean;
Function FStat(var F:File;Var Info:stat):Boolean;
Function Lstat(Filename: PathStr;var Info:stat):Boolean;
Function StatFS(Path:Pathstr;Var Info:tstatfs):Boolean;
Function StatFS(Fd: Longint;Var Info:tstatfs):Boolean;
Function Fcntl(Fd:longint;Cmd:longint):longint;
Procedure Fcntl(Fd:longint;Cmd:longint;Arg:Longint);
Function Fcntl(var Fd:Text;Cmd:longint):longint;
Procedure Fcntl(var Fd:Text;Cmd:longint;Arg:Longint);
Function Dup(oldfile:longint;var newfile:longint):Boolean;
Function Dup(var oldfile,newfile:text):Boolean;
Function Dup(var oldfile,newfile:file):Boolean;
Function Dup2(oldfile,newfile:longint):Boolean;
Function Dup2(var oldfile,newfile:text):Boolean;
Function Dup2(var oldfile,newfile:file):Boolean;
Function Select(N:longint;readfds,writefds,exceptfds:PFDSet;TimeOut:PTimeVal):longint;
Function Select(N:longint;readfds,writefds,exceptfds:PFDSet;TimeOut:Longint):longint;
Function SelectText(var T:Text;TimeOut :PTimeVal):Longint;
Function SelectText(var T:Text;TimeOut :Longint):Longint;
{**************************
Directory Handling
***************************}
Function OpenDir(f:pchar):pdir;
Function OpenDir(f: String):pdir;
function CloseDir(p:pdir):integer;
Function ReadDir(p:pdir):pdirent;
procedure SeekDir(p:pdir;off:longint);
function TellDir(p:pdir):longint;
{**************************
Pipe/Fifo/Stream
***************************}
Function AssignPipe(var pipe_in,pipe_out:longint):boolean;
Function AssignPipe(var pipe_in,pipe_out:text):boolean;
Function AssignPipe(var pipe_in,pipe_out:file):boolean;
Function PClose(Var F:text) : longint;
Function PClose(Var F:file) : longint;
Procedure POpen(var F:text;const Prog:String;rw:char);
Procedure POpen(var F:file;const Prog:String;rw:char);
Function mkFifo(pathname:string;mode:longint):boolean;
function AssignStream(Var StreamIn,Streamout:text;Const Prog:String) : longint;
function AssignStream(var StreamIn, StreamOut, StreamErr: Text; const prog: String): LongInt;
{**************************
General information
***************************}
Function GetEnv(P:string):Pchar;
{$ifndef BSD}
Function GetDomainName:String;
Function GetHostName:String;
Function Sysinfo(var Info:TSysinfo):Boolean;
Function Uname(var unamerec:utsname):Boolean;
{$endif}
{**************************
Signal
***************************}
Procedure SigAction(Signum:longint;Act,OldAct:PSigActionRec );
Procedure SigProcMask (How:longint;SSet,OldSSet:PSigSet);
Function SigPending:SigSet;
Procedure SigSuspend(Mask:Sigset);
Function Signal(Signum:longint;Handler:SignalHandler):SignalHandler;
Function Kill(Pid:longint;Sig:longint):integer;
Procedure SigRaise(Sig:integer);
{$ifndef BSD}
Function Alarm(Sec : Longint) : longint;
Procedure Pause;
{$endif}
Function NanoSleep(const req : timespec;var rem : timespec) : longint;
{**************************
IOCtl/Termios Functions
***************************}
Function IOCtl(Handle,Ndx: Longint;Data: Pointer):boolean;
Function TCGetAttr(fd:longint;var tios:TermIOS):boolean;
Function TCSetAttr(fd:longint;OptAct:longint;const tios:TermIOS):boolean;
Procedure CFSetISpeed(var tios:TermIOS;speed:Cardinal);
Procedure CFSetOSpeed(var tios:TermIOS;speed:Cardinal);
Procedure CFMakeRaw(var tios:TermIOS);
Function TCSendBreak(fd,duration:longint):boolean;
Function TCSetPGrp(fd,id:longint):boolean;
Function TCGetPGrp(fd:longint;var id:longint):boolean;
Function TCFlush(fd,qsel:longint):boolean;
Function TCDrain(fd:longint):boolean;
Function TCFlow(fd,act:longint):boolean;
Function IsATTY(Handle:Longint):Boolean;
Function IsATTY(f:text):Boolean;
function TTYname(Handle:Longint):string;
function TTYname(var F:Text):string;
{**************************
Memory functions
***************************}
(* the consts are System-dependend, not checked for solaris *)
const
PROT_READ = $1; { page can be read }
PROT_WRITE = $2; { page can be written }
PROT_EXEC = $4; { page can be executed }
PROT_NONE = $0; { page can not be accessed }
MAP_SHARED = $1; { Share changes }
// MAP_PRIVATE = $2; { Changes are private }
MAP_TYPE = $f; { Mask for type of mapping }
MAP_FIXED = $10; { Interpret addr exactly }
// MAP_ANONYMOUS = $20; { don't use a file }
MAP_GROWSDOWN = $100; { stack-like segment }
MAP_DENYWRITE = $800; { ETXTBSY }
MAP_EXECUTABLE = $1000; { mark it as an executable }
MAP_LOCKED = $2000; { pages are locked }
MAP_NORESERVE = $4000; { don't check for reservations }
type
tmmapargs=record
address : longint;
size : longint;
prot : longint;
flags : longint;
fd : longint;
offset : longint;
end;
function MMap(const m:tmmapargs):longint;
function MUnMap (P : Pointer; Size : Longint) : Boolean;
{**************************
Port IO functions
***************************}
Function IOperm (From,Num : Cardinal; Value : Longint) : boolean;
{$ifndef BSD}
Function IoPL(Level : longint) : Boolean;
{$endif}
{$ifdef i386}
Procedure WritePort (Port : Longint; Value : Byte);
Procedure WritePort (Port : Longint; Value : Word);
Procedure WritePort (Port : Longint; Value : Longint);
Procedure WritePortB (Port : Longint; Value : Byte);
Procedure WritePortW (Port : Longint; Value : Word);
Procedure WritePortL (Port : Longint; Value : Longint);
Procedure WritePortL (Port : Longint; Var Buf; Count: longint);
Procedure WritePortW (Port : Longint; Var Buf; Count: longint);
Procedure WritePortB (Port : Longint; Var Buf; Count: longint);
Procedure ReadPort (Port : Longint; Var Value : Byte);
Procedure ReadPort (Port : Longint; Var Value : Word);
Procedure ReadPort (Port : Longint; Var Value : Longint);
function ReadPortB (Port : Longint): Byte;
function ReadPortW (Port : Longint): Word;
function ReadPortL (Port : Longint): LongInt;
Procedure ReadPortL (Port : Longint; Var Buf; Count: longint);
Procedure ReadPortW (Port : Longint; Var Buf; Count: longint);
Procedure ReadPortB (Port : Longint; Var Buf; Count: longint);
{$endif}
{**************************
Utility functions
***************************}
Function Octal(l:longint):longint;
Function FExpand(Const Path: PathStr):PathStr;
Function FSearch(const path:pathstr;dirlist:string):pathstr;
Procedure FSplit(const Path:PathStr;Var Dir:DirStr;Var Name:NameStr;Var Ext:ExtStr);
Function Dirname(Const path:pathstr):pathstr;
Function Basename(Const path:pathstr;Const suf:pathstr):pathstr;
Function FNMatch(const Pattern,Name:string):Boolean;
Function Glob(Const path:pathstr):pglob;
Procedure Globfree(var p:pglob);
Function StringToPPChar(Var S:String):ppchar;
Function StringToPPChar(Var S:AnsiString):ppchar;
Function StringToPPChar(S : Pchar):ppchar;
Function GetFS(var T:Text):longint;
Function GetFS(Var F:File):longint;
{Filedescriptorsets}
Procedure FD_Zero(var fds:fdSet);
Procedure FD_Clr(fd:longint;var fds:fdSet);
Procedure FD_Set(fd:longint;var fds:fdSet);
Function FD_IsSet(fd:longint;var fds:fdSet):boolean;
{Stat.Mode Types}
Function S_ISLNK(m:word):boolean;
Function S_ISREG(m:word):boolean;
Function S_ISDIR(m:word):boolean;
Function S_ISCHR(m:word):boolean;
Function S_ISBLK(m:word):boolean;
Function S_ISFIFO(m:word):boolean;
Function S_ISSOCK(m:word):boolean;
{******************************************************************************
Implementation
******************************************************************************}
Implementation
Uses Strings,baseunix;
{ Get the definitions of textrec and filerec }
{$i textrec.inc}
{$i filerec.inc}
{ Raw System calls are in Syscalls.inc}
{$i syscalls.inc}
{$i unixsysc.inc} {Syscalls only used in unit Unix/Linux}
{******************************************************************************
Process related calls
******************************************************************************}
{ Most calls of WaitPID do not handle the result correctly, this funktion treats errors more correctly }
Function WaitProcess(Pid:longint):Longint; { like WaitPid(PID,@result,0) Handling of Signal interrupts (errno=EINTR), returning the Exitcode of Process (>=0) or -Status if terminated}
var r,s : LongInt;
begin
repeat
s:=$7F00;
r:=WaitPid(Pid,@s,0);
until (r<>-1) or (LinuxError<>ESysEINTR);
if (r=-1) or (r=0) then // 0 is not a valid return and should never occur (it means status invalid when using WNOHANG)
WaitProcess:=-1 // return -1 to indicate an error
else
begin
{$ifndef Solaris}
WaitProcess:=s; // s<0 should not occur, but wie return also a negativ value
{$else}
if (s and $FF)=0 then // Only this is a valid returncode
WaitProcess:=s shr 8
else if (s>0) then // Until now there is not use of the highest bit , but check this for the future
WaitProcess:=-s // normal case
else
WaitProcess:=s; // s<0 should not occur, but wie return also a negativ value
{$endif}
end;
end;
function InternalCreateShellArgV(cmd:pChar; len:longint):ppchar;
{
Create an argv which executes a command in a shell using /bin/sh -c
}
const Shell = '/bin/sh'#0'-c'#0;
var
pp,p : ppchar;
// temp : string; !! Never pass a local var back!!
begin
getmem(pp,4*4);
p:=pp;
p^:=@Shell[1];
inc(p);
p^:=@Shell[9];
inc(p);
getmem(p^,len+1);
move(cmd^,p^^,len);
pchar(p^)[len]:=#0;
inc(p);
p^:=Nil;
InternalCreateShellArgV:=pp;
end;
function CreateShellArgV(const prog:string):ppchar;
begin
CreateShellArgV:=InternalCreateShellArgV(@prog[1],length(prog));
end;
function CreateShellArgV(const prog:Ansistring):ppchar;
{
Create an argv which executes a command in a shell using /bin/sh -c
using a AnsiString;
}
begin
CreateShellArgV:=InternalCreateShellArgV(@prog[1],length(prog)); // if ppc works like delphi this also work when @prog[1] is invalid (len=0)
end;
procedure FreeShellArgV(p:ppchar);
begin
if (p<>nil) then begin
freemem(p[2]);
freemem(p);
end;
end;
Procedure Execve(Path: AnsiString;args:ppchar;ep:ppchar);
{
overloaded ansistring version.
}
begin
ExecVE(PChar(Path),args,ep);
end;
Procedure Execv(const path: AnsiString;args:ppchar);
{
Overloaded ansistring version.
}
begin
ExecVe(Path,Args,envp)
end;
Procedure Execvp(Path: AnsiString; Args:ppchar;Ep:ppchar);
{
Overloaded ansistring version
}
var
thepath : Ansistring;
begin
if path[1]<>'/' then
begin
Thepath:=strpas(getenv('PATH'));
if thepath='' then
thepath:='.';
Path:=FSearch(path,thepath)
end
else
Path:='';
if Path='' then
linuxerror:=ESysenoent
else
Execve(Path,args,ep);{On error linuxerror will get set there}
end;
Procedure Execv(const path:pathstr;args:ppchar);
{
Replaces the current program by the program specified in path,
arguments in args are passed to Execve.
the current environment is passed on.
}
begin
Execve(path,args,envp); {On error linuxerror will get set there}
end;
Procedure Execvp(Path:Pathstr;Args:ppchar;Ep:ppchar);
{
This does the same as Execve, only it searches the PATH environment
for the place of the Executable, except when Path starts with a slash.
if the PATH environment variable is unavailable, the path is set to '.'
}
var
thepath : string;
begin
if path[1]<>'/' then
begin
Thepath:=strpas(getenv('PATH'));
if thepath='' then
thepath:='.';
Path:=FSearch(path,thepath)
end
else
Path:='';
if Path='' then
linuxerror:=ESysenoent
else
Execve(Path,args,ep);{On error linuxerror will get set there}
end;
Procedure Execle(Todo:string;Ep:ppchar);
{
This procedure takes the string 'Todo', parses it for command and
command options, and Executes the command with the given options.
The string 'Todo' shoud be of the form 'command options', options
separated by commas.
the PATH environment is not searched for 'command'.
The specified environment(in 'ep') is passed on to command
}
var
p : ppchar;
begin
p:=StringToPPChar(ToDo);
if (p=nil) or (p^=nil) then
exit;
ExecVE(p^,p,EP);
end;
Procedure Execle(Todo:AnsiString;Ep:ppchar);
{
This procedure takes the string 'Todo', parses it for command and
command options, and Executes the command with the given options.
The string 'Todo' shoud be of the form 'command options', options
separated by commas.
the PATH environment is not searched for 'command'.
The specified environment(in 'ep') is passed on to command
}
var
p : ppchar;
begin
p:=StringToPPChar(ToDo);
if (p=nil) or (p^=nil) then
exit;
ExecVE(p^,p,EP);
end;
Procedure Execl(const Todo:string);
{
This procedure takes the string 'Todo', parses it for command and
command options, and Executes the command with the given options.
The string 'Todo' shoud be of the form 'command options', options
separated by commas.
the PATH environment is not searched for 'command'.
The current environment is passed on to command
}
begin
ExecLE(ToDo,EnvP);
end;
Procedure Execlp(Todo:string;Ep:ppchar);
{
This procedure takes the string 'Todo', parses it for command and
command options, and Executes the command with the given options.
The string 'Todo' shoud be of the form 'command options', options
separated by commas.
the PATH environment is searched for 'command'.
The specified environment (in 'ep') is passed on to command
}
var
p : ppchar;
begin
p:=StringToPPchar(todo);
if (p=nil) or (p^=nil) then
exit;
ExecVP(StrPas(p^),p,EP);
end;
Procedure Execlp(Todo: Ansistring;Ep:ppchar);
{
Overloaded ansistring version.
}
var
p : ppchar;
begin
p:=StringToPPchar(todo);
if (p=nil) or (p^=nil) then
exit;
ExecVP(StrPas(p^),p,EP);
end;
Function Shell(const Command:String):Longint;
{
Executes the shell, and passes it the string Command. (Through /bin/sh -c)
The current environment is passed to the shell.
It waits for the shell to exit, and returns its exit status.
If the Exec call failed exit status 127 is reported.
}
{ Changed the structure:
- the previous version returns an undefinied value if fork fails
- it returns the status of Waitpid instead of the Process returnvalue (see the doc to Shell)
- it uses exit(127) not ExitProc (The Result in pp386: going on Compiling in 2 processes!)
- ShellArgs are now released
- The Old CreateShellArg gives back pointers to a local var
}
var
p : ppchar;
pid : longint;
begin
p:=CreateShellArgv(command);
pid:=fork;
if pid=0 then // We are in the Child
begin
{This is the child.}
Execve(p^,p,envp);
ExitProcess(127); // was Exit(127)
end
else if (pid<>-1) then // Successfull started
Shell:=WaitProcess(pid) {Linuxerror is set there}
else // no success
Shell:=-1; // indicate an error
FreeShellArgV(p);
end;
Function Shell(const Command:AnsiString):Longint;
{
AnsiString version of Shell
}
var
p : ppchar;
pid : longint;
begin { Changes as above }
p:=CreateShellArgv(command);
pid:=fork;
if pid=0 then // We are in the Child
begin
Execve(p^,p,envp);
ExitProcess(127); // was exit(127)!! We must exit the Process, not the function
end
else if (pid<>-1) then // Successfull started
Shell:=WaitProcess(pid) {Linuxerror is set there}
else // no success
Shell:=-1;
FreeShellArgV(p);
end;
{******************************************************************************
Date and Time related calls
******************************************************************************}
Const
{Date Translation}
C1970=2440588;
D0 = 1461;
D1 = 146097;
D2 =1721119;
Function GregorianToJulian(Year,Month,Day:Longint):LongInt;
Var
Century,XYear: LongInt;
Begin
If Month<=2 Then
Begin
Dec(Year);
Inc(Month,12);
End;
Dec(Month,3);
Century:=(longint(Year Div 100)*D1) shr 2;
XYear:=(longint(Year Mod 100)*D0) shr 2;
GregorianToJulian:=((((Month*153)+2) div 5)+Day)+D2+XYear+Century;
End;
Procedure JulianToGregorian(JulianDN:LongInt;Var Year,Month,Day:Word);
Var
YYear,XYear,Temp,TempMonth : LongInt;
Begin
Temp:=((JulianDN-D2) shl 2)-1;
JulianDN:=Temp Div D1;
XYear:=(Temp Mod D1) or 3;
YYear:=(XYear Div D0);
Temp:=((((XYear mod D0)+4) shr 2)*5)-3;
Day:=((Temp Mod 153)+5) Div 5;
TempMonth:=Temp Div 153;
If TempMonth>=10 Then
Begin
inc(YYear);
dec(TempMonth,12);
End;
inc(TempMonth,3);
Month := TempMonth;
Year:=YYear+(JulianDN*100);
end;
Function GetEpochTime: longint;
{
Get the number of seconds since 00:00, January 1 1970, GMT
the time NOT corrected any way
}
begin
GetEpochTime:=GetTimeOfDay;
end;
Procedure EpochToLocal(epoch:longint;var year,month,day,hour,minute,second:Word);
{
Transforms Epoch time into local time (hour, minute,seconds)
}
Var
DateNum: LongInt;
Begin
inc(Epoch,TZSeconds);
Datenum:=(Epoch Div 86400) + c1970;
JulianToGregorian(DateNum,Year,Month,day);
Epoch:=Abs(Epoch Mod 86400);
Hour:=Epoch Div 3600;
Epoch:=Epoch Mod 3600;
Minute:=Epoch Div 60;
Second:=Epoch Mod 60;
End;
Function LocalToEpoch(year,month,day,hour,minute,second:Word):Longint;
{
Transforms local time (year,month,day,hour,minutes,second) to Epoch time
(seconds since 00:00, january 1 1970, corrected for local time zone)
}
Begin
LocalToEpoch:=((GregorianToJulian(Year,Month,Day)-c1970)*86400)+
(LongInt(Hour)*3600)+(Minute*60)+Second-TZSeconds;
End;
procedure GetTime(var hour,min,sec,msec,usec:word);
{
Gets the current time, adjusted to local time
}
var
year,day,month:Word;
t : timeval;
begin
gettimeofday(t);
EpochToLocal(t.sec,year,month,day,hour,min,sec);
msec:=t.usec div 1000;
usec:=t.usec mod 1000;
end;
procedure GetTime(var hour,min,sec,sec100:word);
{
Gets the current time, adjusted to local time
}
var
usec : word;
begin
gettime(hour,min,sec,sec100,usec);
sec100:=sec100 div 10;
end;
Procedure GetTime(Var Hour,Min,Sec:Word);
{
Gets the current time, adjusted to local time
}
var
msec,usec : Word;
Begin
gettime(hour,min,sec,msec,usec);
End;
Procedure GetDate(Var Year,Month,Day:Word);
{
Gets the current date, adjusted to local time
}
var
hour,minute,second : word;
Begin
EpochToLocal(GetTimeOfDay,year,month,day,hour,minute,second);
End;
Procedure GetDateTime(Var Year,Month,Day,hour,minute,second:Word);
{
Gets the current date, adjusted to local time
}
Begin
EpochToLocal(GetTimeOfDay,year,month,day,hour,minute,second);
End;
{$ifndef BSD} {Start 1.0.x compiler FreeBSD cycle defines linux}
{$ifdef Linux}
Function stime (t : longint) : Boolean;
var
sr : Syscallregs;
begin
sr.reg2:=longint(@t);
SysCall(Syscall_nr_stime,sr);
linuxerror:=errno;
stime:=linuxerror=0;
end;
{$endif}
{$endif}
{$ifdef BSD}
Function stime (t : longint) : Boolean;
begin
end;
{$endif}
Function SetTime(Hour,Min,Sec:word) : boolean;
var
Year, Month, Day : Word;
begin
GetDate (Year, Month, Day);
SetTime:=stime ( LocalToEpoch ( Year, Month, Day, Hour, Min, Sec ) );
end;
Function SetDate(Year,Month,Day:Word) : boolean;
var
Hour, Minute, Second, Sec100 : Word;
begin
GetTime ( Hour, Minute, Second, Sec100 );
SetDate:=stime ( LocalToEpoch ( Year, Month, Day, Hour, Minute, Second ) );
end;
Function SetDateTime(Year,Month,Day,hour,minute,second:Word) : Boolean;
begin
SetDateTime:=stime ( LocalToEpoch ( Year, Month, Day, Hour, Minute, Second ) );
end;
Procedure Execl(const Todo:Ansistring);
{
Overloaded AnsiString Version of ExecL.
}
begin
ExecLE(ToDo,EnvP);
end;
{ Include timezone handling routines which use /usr/share/timezone info }
{$i timezone.inc}
{******************************************************************************
FileSystem calls
******************************************************************************}
Function fdOpen(pathname:string;flags:longint):longint;
begin
pathname:=pathname+#0;
fdOpen:=Sys_Open(@pathname[1],flags,438);
LinuxError:=Errno;
end;
Function fdOpen(pathname:string;flags,mode:longint):longint;
begin
pathname:=pathname+#0;
fdOpen:=Sys_Open(@pathname[1],flags,mode);
LinuxError:=Errno;
end;
Function fdOpen(pathname:pchar;flags:longint):longint;
begin
fdOpen:=Sys_Open(pathname,flags,0);
LinuxError:=Errno;
end;
Function fdOpen(pathname:pchar;flags,mode:longint):longint;
begin
fdOpen:=Sys_Open(pathname,flags,mode);
LinuxError:=Errno;
end;
Function fdClose(fd:longint):boolean;
begin
fdClose:=(Sys_Close(fd)=0);
LinuxError:=Errno;
end;
Function fdRead(fd:longint;var buf;size:longint):longint;
begin
fdRead:=Sys_Read(fd,pchar(@buf),size);
LinuxError:=Errno;
end;
Function fdWrite(fd:longint;const buf;size:longint):longint;
begin
fdWrite:=Sys_Write(fd,pchar(@buf),size);
LinuxError:=Errno;
end;
Function fdSeek (fd,pos,seektype :longint): longint;
{
Do a Seek on a file descriptor fd to position pos, starting from seektype
}
begin
fdseek:=Sys_LSeek (fd,pos,seektype);
LinuxError:=Errno;
end;
{$ifdef BSD}
Function Fcntl(Fd:longint;Cmd:longint):longint;
{
Read or manipulate a file.(See also fcntl (2) )
Possible values for Cmd are :
F_GetFd,F_GetFl,F_GetOwn
Errors are reported in Linuxerror;
If Cmd is different from the allowed values, linuxerror=ESyseninval.
}
begin
if (cmd in [F_GetFd,F_GetFl,F_GetOwn]) then
begin
Linuxerror:=fpfcntl(fd,cmd,0);
if linuxerror=-1 then
begin
linuxerror:=errno;
fcntl:=0;
end
else
begin
fcntl:=linuxerror;
linuxerror:=0;
end;
end
else
begin
linuxerror:=ESyseinval;
Fcntl:=0;
end;
end;
Procedure Fcntl(Fd:longint;Cmd:longint;Arg:Longint);
{
Read or manipulate a file. (See also fcntl (2) )
Possible values for Cmd are :
F_setFd,F_SetFl,F_GetLk,F_SetLk,F_SetLkW,F_SetOwn;
Errors are reported in Linuxerror;
If Cmd is different from the allowed values, linuxerror=Sys_eninval.
F_DupFD is not allowed, due to the structure of Files in Pascal.
}
begin
if (cmd in [F_SetFd,F_SetFl,F_GetLk,F_SetLk,F_SetLkw,F_SetOwn]) then
begin
fpfcntl(fd,cmd,arg);
LinuxError:=ErrNo;
end
else
linuxerror:=ESyseinval;
end;
{$endif}
Function Fcntl(var Fd:Text;Cmd:longint):longint;
begin
Fcntl := Fcntl(textrec(Fd).handle, Cmd);
end;
Procedure Fcntl(var Fd:Text;Cmd,Arg:Longint);
begin
Fcntl(textrec(Fd).handle, Cmd, Arg);
end;
Function Flock (var T : text;mode : longint) : boolean;
begin
Flock:=Flock(TextRec(T).Handle,mode);
end;
Function Flock (var F : File;mode : longint) : boolean;
begin
Flock:=Flock(FileRec(F).Handle,mode);
end;
Function FStat(Path:Pathstr;Var Info:stat):Boolean;
{
Get all information on a file, and return it in Info.
}
begin
path:=path+#0;
FStat:=(Sys_stat(@(path[1]),Info)=0);
LinuxError:=errno;
end;
Function FStat(var F:Text;Var Info:stat):Boolean;
{
Get all information on a text file, and return it in info.
}
begin
FStat:=Fstat(TextRec(F).Handle,INfo);
end;
Function FStat(var F:File;Var Info:stat):Boolean;
{
Get all information on a untyped file, and return it in info.
}
begin
FStat:=Fstat(FileRec(F).Handle,Info);
end;
Function SymLink(OldPath,newPath:pathstr):boolean;
{
Proceduces a soft link from new to old.
}
begin
oldpath:=oldpath+#0;
newpath:=newpath+#0;
Symlink:=Sys_symlink(pchar(@(oldpath[1])),pchar(@(newpath[1])))=0;
linuxerror:=errno;
end;
Function ReadLink(name,linkname:pchar;maxlen:longint):longint;
{
Read a link (where it points to)
}
begin
Readlink:=Sys_readlink(Name,LinkName,maxlen);
linuxerror:=errno;
end;
Function ReadLink(Name:pathstr):pathstr;
{
Read a link (where it points to)
}
var
LinkName : pathstr;
i : longint;
begin
Name:=Name+#0;
i:=ReadLink(@Name[1],@LinkName[1],high(linkname));
if i>0 then
begin
linkname[0]:=chr(i);
ReadLink:=LinkName;
end
else
ReadLink:='';
end;
Function UnLink(Path:pathstr):boolean;
{
Removes the file in 'Path' (that is, it decreases the link count with one.
if the link count is zero, the file is removed from the disk.
}
begin
path:=path+#0;
Unlink:=Sys_unlink(pchar(@(path[1])))=0;
linuxerror:=errno;
end;
Function UnLink(Path:pchar):Boolean;
{
Removes the file in 'Path' (that is, it decreases the link count with one.
if the link count is zero, the file is removed from the disk.
}
begin
Unlink:=(Sys_unlink(path)=0);
linuxerror:=errno;
end;
Function FRename (OldName,NewName : Pchar) : Boolean;
begin
FRename:=Sys_rename(OldName,NewName)=0;
LinuxError:=Errno;
end;
Function FRename (OldName,NewName : String) : Boolean;
begin
OldName:=OldName+#0;
NewName:=NewName+#0;
FRename:=FRename (@OldName[1],@NewName[1]);
end;
Function Dup(var oldfile,newfile:text):Boolean;
{
Copies the filedescriptor oldfile to newfile, after flushing the buffer of
oldfile.
After which the two textfiles are, in effect, the same, except
that they don't share the same buffer, and don't share the same
close_on_exit flag.
}
begin
flush(oldfile);{ We cannot share buffers, so we flush them. }
textrec(newfile):=textrec(oldfile);
textrec(newfile).bufptr:=@(textrec(newfile).buffer);{ No shared buffer. }
Dup:=Dup(textrec(oldfile).handle,textrec(newfile).handle);
end;
Function Dup(var oldfile,newfile:file):Boolean;
{
Copies the filedescriptor oldfile to newfile
}
begin
filerec(newfile):=filerec(oldfile);
Dup:=Dup(filerec(oldfile).handle,filerec(newfile).handle);
end;
Function Dup2(var oldfile,newfile:text):Boolean;
{
Copies the filedescriptor oldfile to newfile, after flushing the buffer of
oldfile. It closes newfile if it was still open.
After which the two textfiles are, in effect, the same, except
that they don't share the same buffer, and don't share the same
close_on_exit flag.
}
var
tmphandle : word;
begin
case TextRec(oldfile).mode of
fmOutput, fmInOut, fmAppend :
flush(oldfile);{ We cannot share buffers, so we flush them. }
end;
case TextRec(newfile).mode of
fmOutput, fmInOut, fmAppend :
flush(newfile);
end;
tmphandle:=textrec(newfile).handle;
textrec(newfile):=textrec(oldfile);
textrec(newfile).handle:=tmphandle;
textrec(newfile).bufptr:=@(textrec(newfile).buffer);{ No shared buffer. }
Dup2:=Dup2(textrec(oldfile).handle,textrec(newfile).handle);
end;
Function Dup2(var oldfile,newfile:file):Boolean;
{
Copies the filedescriptor oldfile to newfile
}
begin
filerec(newfile):=filerec(oldfile);
Dup2:=Dup2(filerec(oldfile).handle,filerec(newfile).handle);
end;
Function Select(N:longint;readfds,writefds,exceptfds:PFDSet;TimeOut:Longint):longint;
{
Select checks whether the file descriptor sets in readfs/writefs/exceptfs
have changed.
This function allows specification of a timeout as a longint.
}
var
p : PTimeVal;
tv : TimeVal;
begin
if TimeOut=-1 then
p:=nil
else
begin
tv.Sec:=Timeout div 1000;
tv.Usec:=(Timeout mod 1000)*1000;
p:=@tv;
end;
Select:=Select(N,Readfds,WriteFds,ExceptFds,p);
end;
Function SelectText(var T:Text;TimeOut :PTimeval):Longint;
Var
F:FDSet;
begin
if textrec(t).mode=fmclosed then
begin
LinuxError:=ESysEBadf;
exit(-1);
end;
FD_Zero(f);
FD_Set(textrec(T).handle,f);
if textrec(T).mode=fminput then
SelectText:=select(textrec(T).handle+1,@f,nil,nil,TimeOut)
else
SelectText:=select(textrec(T).handle+1,nil,@f,nil,TimeOut);
end;
Function SelectText(var T:Text;TimeOut :Longint):Longint;
var
p : PTimeVal;
tv : TimeVal;
begin
if TimeOut=-1 then
p:=nil
else
begin
tv.Sec:=Timeout div 1000;
tv.Usec:=(Timeout mod 1000)*1000;
p:=@tv;
end;
SelectText:=SelectText(T,p);
end;
{******************************************************************************
Directory
******************************************************************************}
Function OpenDir(F:String):PDir;
begin
F:=F+#0;
OpenDir:=OpenDir(@F[1]);
LinuxError:=ErrNo;
end;
procedure SeekDir(p:pdir;off:longint);
begin
if p=nil then
begin
errno:=ESysEBadf;
exit;
end;
{$ifndef bsd} {Should be ifdef Linux, but can't because
of 1.0.5 cycle}
{$ifndef Solaris}
p^.nextoff:=Sys_lseek(p^.fd,off,seek_set);
{$endif}
{$endif}
p^.size:=0;
p^.loc:=0;
end;
function TellDir(p:pdir):longint;
begin
if p=nil then
begin
errno:=ESysEBadf;
telldir:=-1;
exit;
end;
telldir:=Sys_lseek(p^.fd,0,seek_cur)
{ We could try to use the nextoff field here, but on my 1.2.13
kernel, this gives nothing... This may have to do with
the readdir implementation of libc... I also didn't find any trace of
the field in the kernel code itself, So I suspect it is an artifact of libc.
Michael. }
end;
Function ReadDir(P:pdir):pdirent;
begin
ReadDir:=Sys_ReadDir(p);
LinuxError:=Errno;
end;
{******************************************************************************
Pipes/Fifo
******************************************************************************}
Procedure OpenPipe(var F:Text);
begin
case textrec(f).mode of
fmoutput :
if textrec(f).userdata[1]<>P_OUT then
textrec(f).mode:=fmclosed;
fminput :
if textrec(f).userdata[1]<>P_IN then
textrec(f).mode:=fmclosed;
else
textrec(f).mode:=fmclosed;
end;
end;
Procedure IOPipe(var F:text);
begin
case textrec(f).mode of
fmoutput :
begin
{ first check if we need something to write, else we may
get a SigPipe when Close() is called (PFV) }
if textrec(f).bufpos>0 then
Sys_write(textrec(f).handle,pchar(textrec(f).bufptr),textrec(f).bufpos);
end;
fminput :
textrec(f).bufend:=Sys_read(textrec(f).handle,pchar(textrec(f).bufptr),textrec(f).bufsize);
end;
textrec(f).bufpos:=0;
end;
Procedure FlushPipe(var F:Text);
begin
if (textrec(f).mode=fmoutput) and (textrec(f).bufpos<>0) then
IOPipe(f);
textrec(f).bufpos:=0;
end;
Procedure ClosePipe(var F:text);
begin
textrec(f).mode:=fmclosed;
Sys_close(textrec(f).handle);
end;
Function AssignPipe(var pipe_in,pipe_out:text):boolean;
{
Sets up a pair of file variables, which act as a pipe. The first one can
be read from, the second one can be written to.
If the operation was unsuccesful, linuxerror is set.
}
var
f_in,f_out : longint;
begin
if not AssignPipe(f_in,f_out) then
begin
AssignPipe:=false;
exit;
end;
{ Set up input }
Assign(Pipe_in,'');
Textrec(Pipe_in).Handle:=f_in;
Textrec(Pipe_in).Mode:=fmInput;
Textrec(Pipe_in).userdata[1]:=P_IN;
TextRec(Pipe_in).OpenFunc:=@OpenPipe;
TextRec(Pipe_in).InOutFunc:=@IOPipe;
TextRec(Pipe_in).FlushFunc:=@FlushPipe;
TextRec(Pipe_in).CloseFunc:=@ClosePipe;
{ Set up output }
Assign(Pipe_out,'');
Textrec(Pipe_out).Handle:=f_out;
Textrec(Pipe_out).Mode:=fmOutput;
Textrec(Pipe_out).userdata[1]:=P_OUT;
TextRec(Pipe_out).OpenFunc:=@OpenPipe;
TextRec(Pipe_out).InOutFunc:=@IOPipe;
TextRec(Pipe_out).FlushFunc:=@FlushPipe;
TextRec(Pipe_out).CloseFunc:=@ClosePipe;
AssignPipe:=true;
end;
Function AssignPipe(var pipe_in,pipe_out:file):boolean;
{
Sets up a pair of file variables, which act as a pipe. The first one can
be read from, the second one can be written to.
If the operation was unsuccesful, linuxerror is set.
}
var
f_in,f_out : longint;
begin
if not AssignPipe(f_in,f_out) then
begin
AssignPipe:=false;
exit;
end;
{ Set up input }
Assign(Pipe_in,'');
Filerec(Pipe_in).Handle:=f_in;
Filerec(Pipe_in).Mode:=fmInput;
Filerec(Pipe_in).recsize:=1;
Filerec(Pipe_in).userdata[1]:=P_IN;
{ Set up output }
Assign(Pipe_out,'');
Filerec(Pipe_out).Handle:=f_out;
Filerec(Pipe_out).Mode:=fmoutput;
Filerec(Pipe_out).recsize:=1;
Filerec(Pipe_out).userdata[1]:=P_OUT;
AssignPipe:=true;
end;
Procedure PCloseText(Var F:text);
{
May not use @PClose due overloading
}
begin
PClose(f);
end;
Procedure POpen(var F:text;const Prog:String;rw:char);
{
Starts the program in 'Prog' and makes it's input or out put the
other end of a pipe. If rw is 'w' or 'W', then whatever is written to
F, will be read from stdin by the program in 'Prog'. The inverse is true
for 'r' or 'R' : whatever the program in 'Prog' writes to stdout, can be
read from 'f'.
}
var
pipi,
pipo : text;
pid : longint;
pl : ^longint;
pp : ppchar;
begin
LinuxError:=0;
rw:=upcase(rw);
if not (rw in ['R','W']) then
begin
LinuxError:=ESysENOENT;
exit;
end;
AssignPipe(pipi,pipo);
if Linuxerror<>0 then
exit;
pid:=fork;
if linuxerror<>0 then
begin
close(pipi);
close(pipo);
exit;
end;
if pid=0 then
begin
{ We're in the child }
if rw='W' then
begin
close(pipo);
dup2(pipi,input);
close(pipi);
if linuxerror<>0 then
halt(127);
end
else
begin
close(pipi);
dup2(pipo,output);
close(pipo);
if linuxerror<>0 then
halt(127);
end;
pp:=createshellargv(prog);
Execve(pp^,pp,envp);
halt(127);
end
else
begin
{ We're in the parent }
if rw='W' then
begin
close(pipi);
f:=pipo;
textrec(f).bufptr:=@textrec(f).buffer;
end
else
begin
close(pipo);
f:=pipi;
textrec(f).bufptr:=@textrec(f).buffer;
end;
{Save the process ID - needed when closing }
pl:=@(textrec(f).userdata[2]);
pl^:=pid;
textrec(f).closefunc:=@PCloseText;
end;
end;
Procedure POpen(var F:file;const Prog:String;rw:char);
{
Starts the program in 'Prog' and makes it's input or out put the
other end of a pipe. If rw is 'w' or 'W', then whatever is written to
F, will be read from stdin by the program in 'Prog'. The inverse is true
for 'r' or 'R' : whatever the program in 'Prog' writes to stdout, can be
read from 'f'.
}
var
pipi,
pipo : file;
pid : longint;
pl : ^longint;
p,pp : ppchar;
temp : string[255];
begin
LinuxError:=0;
rw:=upcase(rw);
if not (rw in ['R','W']) then
begin
LinuxError:=ESysENOENT;
exit;
end;
AssignPipe(pipi,pipo);
if Linuxerror<>0 then
exit;
pid:=fork;
if linuxerror<>0 then
begin
close(pipi);
close(pipo);
exit;
end;
if pid=0 then
begin
{ We're in the child }
if rw='W' then
begin
close(pipo);
dup2(filerec(pipi).handle,stdinputhandle);
close(pipi);
if linuxerror<>0 then
halt(127);
end
else
begin
close(pipi);
dup2(filerec(pipo).handle,stdoutputhandle);
close(pipo);
if linuxerror<>0 then
halt(127);
end;
getmem(pp,sizeof(pchar)*4);
temp:='/bin/sh'#0'-c'#0+prog+#0;
p:=pp;
p^:=@temp[1];
inc(p);
p^:=@temp[9];
inc(p);
p^:=@temp[12];
inc(p);
p^:=Nil;
Execve('/bin/sh',pp,envp);
halt(127);
end
else
begin
{ We're in the parent }
if rw='W' then
begin
close(pipi);
f:=pipo;
end
else
begin
close(pipo);
f:=pipi;
end;
{Save the process ID - needed when closing }
pl:=@(filerec(f).userdata[2]);
pl^:=pid;
end;
end;
Function AssignStream(Var StreamIn,Streamout:text;Const Prog:String) : longint;
{
Starts the program in 'Prog' and makes its input and output the
other end of two pipes, which are the stdin and stdout of a program
specified in 'Prog'.
streamout can be used to write to the program, streamin can be used to read
the output of the program. See the following diagram :
Parent Child
STreamout --> Input
Streamin <-- Output
Return value is the process ID of the process being spawned, or -1 in case of failure.
}
var
pipi,
pipo : text;
pid : longint;
pl : ^Longint;
begin
LinuxError:=0;
AssignStream:=-1;
AssignPipe(streamin,pipo);
if Linuxerror<>0 then
exit;
AssignPipe(pipi,streamout);
if Linuxerror<>0 then
exit;
pid:=fork;
if linuxerror<>0 then
begin
close(pipi);
close(pipo);
close (streamin);
close (streamout);
exit;
end;
if pid=0 then
begin
{ We're in the child }
{ Close what we don't need }
close(streamout);
close(streamin);
dup2(pipi,input);
if linuxerror<>0 then
halt(127);
close(pipi);
dup2(pipo,output);
if linuxerror<>0 then
halt (127);
close(pipo);
Execl(Prog);
halt(127);
end
else
begin
{ we're in the parent}
close(pipo);
close(pipi);
{Save the process ID - needed when closing }
pl:=@(textrec(StreamIn).userdata[2]);
pl^:=pid;
textrec(StreamIn).closefunc:=@PCloseText;
{Save the process ID - needed when closing }
pl:=@(textrec(StreamOut).userdata[2]);
pl^:=pid;
textrec(StreamOut).closefunc:=@PCloseText;
AssignStream:=Pid;
end;
end;
function AssignStream(var StreamIn, StreamOut, StreamErr: Text; const prog: String): LongInt;
{
Starts the program in 'prog' and makes its input, output and error output the
other end of three pipes, which are the stdin, stdout and stderr of a program
specified in 'prog'.
StreamOut can be used to write to the program, StreamIn can be used to read
the output of the program, StreamErr reads the error output of the program.
See the following diagram :
Parent Child
StreamOut --> StdIn (input)
StreamIn <-- StdOut (output)
StreamErr <-- StdErr (error output)
}
var
PipeIn, PipeOut, PipeErr: text;
pid: LongInt;
pl: ^LongInt;
begin
LinuxError := 0;
AssignStream := -1;
// Assign pipes
AssignPipe(StreamIn, PipeOut);
if LinuxError <> 0 then exit;
AssignPipe(StreamErr, PipeErr);
if LinuxError <> 0 then begin
Close(StreamIn);
Close(PipeOut);
exit;
end;
AssignPipe(PipeIn, StreamOut);
if LinuxError <> 0 then begin
Close(StreamIn);
Close(PipeOut);
Close(StreamErr);
Close(PipeErr);
exit;
end;
// Fork
pid := Fork;
if LinuxError <> 0 then begin
Close(StreamIn);
Close(PipeOut);
Close(StreamErr);
Close(PipeErr);
Close(PipeIn);
Close(StreamOut);
exit;
end;
if pid = 0 then begin
// *** We are in the child ***
// Close what we don not need
Close(StreamOut);
Close(StreamIn);
Close(StreamErr);
// Connect pipes
dup2(PipeIn, Input);
if LinuxError <> 0 then Halt(127);
Close(PipeIn);
dup2(PipeOut, Output);
if LinuxError <> 0 then Halt(127);
Close(PipeOut);
dup2(PipeErr, StdErr);
if LinuxError <> 0 then Halt(127);
Close(PipeErr);
// Execute program
Execl(Prog);
Halt(127);
end else begin
// *** We are in the parent ***
Close(PipeErr);
Close(PipeOut);
Close(PipeIn);
// Save the process ID - needed when closing
pl := @(TextRec(StreamIn).userdata[2]);
pl^ := pid;
TextRec(StreamIn).closefunc := @PCloseText;
// Save the process ID - needed when closing
pl := @(TextRec(StreamOut).userdata[2]);
pl^ := pid;
TextRec(StreamOut).closefunc := @PCloseText;
// Save the process ID - needed when closing
pl := @(TextRec(StreamErr).userdata[2]);
pl^ := pid;
TextRec(StreamErr).closefunc := @PCloseText;
AssignStream := pid;
end;
end;
{******************************************************************************
General information calls
******************************************************************************}
Function GetEnv(P:string):Pchar;
{
Searches the environment for a string with name p and
returns a pchar to it's value.
A pchar is used to accomodate for strings of length > 255
}
var
ep : ppchar;
found : boolean;
Begin
p:=p+'='; {Else HOST will also find HOSTNAME, etc}
ep:=envp;
found:=false;
if ep<>nil then
begin
while (not found) and (ep^<>nil) do
begin
if strlcomp(@p[1],(ep^),length(p))=0 then
found:=true
else
inc(ep);
end;
end;
if found then
getenv:=ep^+length(p)
else
getenv:=nil;
end;
{$ifndef bsd}
Function GetDomainName:String;
{
Get machines domain name. Returns empty string if not set.
}
Var
Sysn : utsname;
begin
Uname(Sysn);
linuxerror:=errno;
If linuxerror<>0 then
getdomainname:=''
else
getdomainname:=strpas(@Sysn.domainname[0]);
end;
Function GetHostName:String;
{
Get machines name. Returns empty string if not set.
}
Var
Sysn : utsname;
begin
uname(Sysn);
linuxerror:=errno;
If linuxerror<>0 then
gethostname:=''
else
gethostname:=strpas(@Sysn.nodename[0]);
end;
{$endif}
{******************************************************************************
Signal handling calls
******************************************************************************}
procedure SigRaise(sig:integer);
begin
Kill(GetPid,Sig);
end;
{******************************************************************************
IOCtl and Termios calls
******************************************************************************}
Function TCGetAttr(fd:longint;var tios:TermIOS):boolean;
begin
{$ifndef BSD}
TCGetAttr:=IOCtl(fd,TCGETS,@tios);
{$else}
TCGETAttr:=IoCtl(Fd,TIOCGETA,@tios);
{$endif}
end;
Function TCSetAttr(fd:longint;OptAct:longint;const tios:TermIOS):boolean;
var
nr:longint;
begin
{$ifndef BSD}
case OptAct of
TCSANOW : nr:=TCSETS;
TCSADRAIN : nr:=TCSETSW;
TCSAFLUSH : nr:=TCSETSF;
{$else}
case OptAct of
TCSANOW : nr:=TIOCSETA;
TCSADRAIN : nr:=TIOCSETAW;
TCSAFLUSH : nr:=TIOCSETAF;
{$endif}
else
begin
ErrNo:=ESysEINVAL;
TCSetAttr:=false;
exit;
end;
end;
TCSetAttr:=IOCtl(fd,nr,@Tios);
end;
Procedure CFSetISpeed(var tios:TermIOS;speed:Cardinal);
begin
{$ifndef BSD}
tios.c_cflag:=(tios.c_cflag and (not CBAUD)) or speed;
{$else}
tios.c_ispeed:=speed; {Probably the Bxxxx speed constants}
{$endif}
end;
Procedure CFSetOSpeed(var tios:TermIOS;speed:Cardinal);
begin
{$ifndef BSD}
CFSetISpeed(tios,speed);
{$else}
tios.c_ospeed:=speed;
{$endif}
end;
Procedure CFMakeRaw(var tios:TermIOS);
begin
{$ifndef BSD}
with tios do
begin
c_iflag:=c_iflag and (not (IGNBRK or BRKINT or PARMRK or ISTRIP or
INLCR or IGNCR or ICRNL or IXON));
c_oflag:=c_oflag and (not OPOST);
c_lflag:=c_lflag and (not (ECHO or ECHONL or ICANON or ISIG or IEXTEN));
c_cflag:=(c_cflag and (not (CSIZE or PARENB))) or CS8;
end;
{$else}
with tios do
begin
c_iflag:=c_iflag and (not (IMAXBEL or IXOFF or INPCK or BRKINT or
PARMRK or ISTRIP or INLCR or IGNCR or ICRNL or IXON or
IGNPAR));
c_iflag:=c_iflag OR IGNBRK;
c_oflag:=c_oflag and (not OPOST);
c_lflag:=c_lflag and (not (ECHO or ECHOE or ECHOK or ECHONL or ICANON or
ISIG or IEXTEN or NOFLSH or TOSTOP or PENDIN));
c_cflag:=(c_cflag and (not (CSIZE or PARENB))) or (CS8 OR cread);
c_cc[VMIN]:=1;
c_cc[VTIME]:=0;
end;
{$endif}
end;
Function TCSendBreak(fd,duration:longint):boolean;
begin
{$ifndef BSD}
TCSendBreak:=IOCtl(fd,TCSBRK,pointer(duration));
{$else}
TCSendBreak:=IOCtl(fd,TIOCSBRK,0);
{$endif}
end;
Function TCSetPGrp(fd,id:longint):boolean;
begin
TCSetPGrp:=IOCtl(fd,TIOCSPGRP,pointer(id));
end;
Function TCGetPGrp(fd:longint;var id:longint):boolean;
begin
TCGetPGrp:=IOCtl(fd,TIOCGPGRP,@id);
end;
Function TCDrain(fd:longint):boolean;
begin
{$ifndef BSD}
TCDrain:=IOCtl(fd,TCSBRK,pointer(1));
{$else}
TCDrain:=IOCtl(fd,TIOCDRAIN,0); {Should set timeout to 1 first?}
{$endif}
end;
Function TCFlow(fd,act:longint):boolean;
begin
{$ifndef BSD}
TCFlow:=IOCtl(fd,TCXONC,pointer(act));
{$else}
case act OF
TCOOFF : TCFlow:=Ioctl(fd,TIOCSTOP,0);
TCOOn : TCFlow:=IOctl(Fd,TIOCStart,0);
TCIOFF : {N/I}
end;
{$endif}
end;
Function TCFlush(fd,qsel:longint):boolean;
begin
{$ifndef BSD}
TCFlush:=IOCtl(fd,TCFLSH,pointer(qsel));
{$else}
TCFlush:=IOCtl(fd,TIOCFLUSH,pointer(qsel));
{$endif}
end;
Function IsATTY(Handle:Longint):Boolean;
{
Check if the filehandle described by 'handle' is a TTY (Terminal)
}
var
t : Termios;
begin
IsAtty:=TCGetAttr(Handle,t);
end;
Function IsATTY(f: text):Boolean;
{
Idem as previous, only now for text variables.
}
begin
IsATTY:=IsaTTY(textrec(f).handle);
end;
function TTYName(Handle:Longint):string;
{
Return the name of the current tty described by handle f.
returns empty string in case of an error.
}
var
mydev,
myino : longint;
st : stat;
function mysearch(n:string): boolean;
{searches recursively for the device in the directory given by n,
returns true if found and sets the name of the device in ttyname}
var dirstream : pdir;
d : pdirent;
name : string;
st : stat;
begin
dirstream:=opendir(n);
if (linuxerror<>0) then
exit;
d:=Readdir(dirstream);
while (d<>nil) do
begin
name:=n+'/'+strpas(@(d^.name));
fstat(name,st);
if linuxerror=0 then
begin
if ((st.mode and $E000)=$4000) and { if it is a directory }
(strpas(@(d^.name))<>'.') and { but not ., .. and fd subdirs }
(strpas(@(d^.name))<>'..') and
(strpas(@(d^.name))<>'') and
(strpas(@(d^.name))<>'fd') then
begin {we found a directory, search inside it}
if mysearch(name) then
begin {the device is here}
closedir(dirstream); {then don't continue searching}
mysearch:=true;
exit;
end;
end
else if (d^.ino=myino) and (st.dev=mydev) then
begin
closedir(dirstream);
ttyname:=name;
mysearch:=true;
exit;
end;
end;
d:=Readdir(dirstream);
end;
closedir(dirstream);
mysearch:=false;
end;
begin
TTYName:='';
fstat(handle,st);
if (errno<>0) and isatty (handle) then
exit;
mydev:=st.dev;
myino:=st.ino;
mysearch('/dev');
end;
function TTYName(var F:Text):string;
{
Idem as previous, only now for text variables;
}
begin
TTYName:=TTYName(textrec(f).handle);
end;
{******************************************************************************
Utility calls
******************************************************************************}
Function Octal(l:longint):longint;
{
Convert an octal specified number to decimal;
}
var
octnr,
oct : longint;
begin
octnr:=0;
oct:=0;
while (l>0) do
begin
oct:=oct or ((l mod 10) shl octnr);
l:=l div 10;
inc(octnr,3);
end;
Octal:=oct;
end;
Function StringToPPChar(S: PChar):ppchar;
var
nr : longint;
Buf : ^char;
p : ppchar;
begin
buf:=s;
nr:=0;
while(buf^<>#0) do
begin
while (buf^ in [' ',#9,#10]) do
inc(buf);
inc(nr);
while not (buf^ in [' ',#0,#9,#10]) do
inc(buf);
end;
getmem(p,nr*4+1);
StringToPPChar:=p;
if p=nil then
begin
LinuxError:=ESysENOMEM;
exit;
end;
buf:=s;
while (buf^<>#0) do
begin
while (buf^ in [' ',#9,#10]) do
begin
buf^:=#0;
inc(buf);
end;
p^:=buf;
inc(p);
p^:=nil;
while not (buf^ in [' ',#0,#9,#10]) do
inc(buf);
end;
end;
{
function FExpand (const Path: PathStr): PathStr;
- declared in fexpand.inc
}
{$DEFINE FPC_FEXPAND_TILDE} { Tilde is expanded to home }
{$DEFINE FPC_FEXPAND_GETENVPCHAR} { GetEnv result is a PChar }
const
LFNSupport = true;
FileNameCaseSensitive = true;
{$I fexpand.inc}
{$UNDEF FPC_FEXPAND_GETENVPCHAR}
{$UNDEF FPC_FEXPAND_TILDE}
Function FSearch(const path:pathstr;dirlist:string):pathstr;
{
Searches for a file 'path' in the list of direcories in 'dirlist'.
returns an empty string if not found. Wildcards are NOT allowed.
If dirlist is empty, it is set to '.'
}
Var
NewDir : PathStr;
p1 : Longint;
Info : Stat;
Begin
{Replace ':' with ';'}
for p1:=1to length(dirlist) do
if dirlist[p1]=':' then
dirlist[p1]:=';';
{Check for WildCards}
If (Pos('?',Path) <> 0) or (Pos('*',Path) <> 0) Then
FSearch:='' {No wildcards allowed in these things.}
Else
Begin
Dirlist:='.;'+dirlist;{Make sure current dir is first to be searched.}
Repeat
p1:=Pos(';',DirList);
If p1=0 Then
p1:=255;
NewDir:=Copy(DirList,1,P1 - 1);
if NewDir[Length(NewDir)]<>'/' then
NewDir:=NewDir+'/';
NewDir:=NewDir+Path;
Delete(DirList,1,p1);
if FStat(NewDir,Info) then
Begin
If Pos('./',NewDir)=1 Then
Delete(NewDir,1,2);
{DOS strips off an initial .\}
End
Else
NewDir:='';
Until (DirList='') or (Length(NewDir) > 0);
FSearch:=NewDir;
End;
End;
Procedure FSplit(const Path:PathStr;Var Dir:DirStr;Var Name:NameStr;Var Ext:ExtStr);
Var
DotPos,SlashPos,i : longint;
Begin
SlashPos:=0;
DotPos:=256;
i:=Length(Path);
While (i>0) and (SlashPos=0) Do
Begin
If (DotPos=256) and (Path[i]='.') Then
begin
DotPos:=i;
end;
If (Path[i]='/') Then
SlashPos:=i;
Dec(i);
End;
Ext:=Copy(Path,DotPos,255);
Dir:=Copy(Path,1,SlashPos);
Name:=Copy(Path,SlashPos + 1,DotPos - SlashPos - 1);
End;
Function Dirname(Const path:pathstr):pathstr;
{
This function returns the directory part of a complete path.
Unless the directory is root '/', The last character is not
a slash.
}
var
Dir : PathStr;
Name : NameStr;
Ext : ExtStr;
begin
FSplit(Path,Dir,Name,Ext);
if length(Dir)>1 then
Delete(Dir,length(Dir),1);
DirName:=Dir;
end;
Function StringToPPChar(Var S:String):ppchar;
{
Create a PPChar to structure of pchars which are the arguments specified
in the string S. Especially usefull for creating an ArgV for Exec-calls
Note that the string S is destroyed by this call.
}
begin
S:=S+#0;
StringToPPChar:=StringToPPChar(@S[1]);
end;
Function StringToPPChar(Var S:AnsiString):ppchar;
{
Create a PPChar to structure of pchars which are the arguments specified
in the string S. Especially usefull for creating an ArgV for Exec-calls
}
begin
StringToPPChar:=StringToPPChar(PChar(S));
end;
Function Basename(Const path:pathstr;Const suf:pathstr):pathstr;
{
This function returns the filename part of a complete path. If suf is
supplied, it is cut off the filename.
}
var
Dir : PathStr;
Name : NameStr;
Ext : ExtStr;
begin
FSplit(Path,Dir,Name,Ext);
if Suf<>Ext then
Name:=Name+Ext;
BaseName:=Name;
end;
Function FNMatch(const Pattern,Name:string):Boolean;
Var
LenPat,LenName : longint;
Function DoFNMatch(i,j:longint):Boolean;
Var
Found : boolean;
Begin
Found:=true;
While Found and (i<=LenPat) Do
Begin
Case Pattern[i] of
'?' : Found:=(j<=LenName);
'*' : Begin
{find the next character in pattern, different of ? and *}
while Found and (i<LenPat) do
begin
inc(i);
case Pattern[i] of
'*' : ;
'?' : begin
inc(j);
Found:=(j<=LenName);
end;
else
Found:=false;
end;
end;
{Now, find in name the character which i points to, if the * or ?
wasn't the last character in the pattern, else, use up all the
chars in name}
Found:=true;
if (i<=LenPat) then
begin
repeat
{find a letter (not only first !) which maches pattern[i]}
while (j<=LenName) and (name[j]<>pattern[i]) do
inc (j);
if (j<LenName) then
begin
if DoFnMatch(i+1,j+1) then
begin
i:=LenPat;
j:=LenName;{we can stop}
Found:=true;
end
else
inc(j);{We didn't find one, need to look further}
end;
until (j>=LenName);
end
else
j:=LenName;{we can stop}
end;
else {not a wildcard character in pattern}
Found:=(j<=LenName) and (pattern[i]=name[j]);
end;
inc(i);
inc(j);
end;
DoFnMatch:=Found and (j>LenName);
end;
Begin {start FNMatch}
LenPat:=Length(Pattern);
LenName:=Length(Name);
FNMatch:=DoFNMatch(1,1);
End;
Procedure Globfree(var p : pglob);
{
Release memory occupied by pglob structure, and names in it.
sets p to nil.
}
var
temp : pglob;
begin
while assigned(p) do
begin
temp:=p^.next;
if assigned(p^.name) then
freemem(p^.name);
dispose(p);
p:=temp;
end;
end;
Function Glob(Const path:pathstr):pglob;
{
Fills a tglob structure with entries matching path,
and returns a pointer to it. Returns nil on error,
linuxerror is set accordingly.
}
var
temp,
temp2 : string[255];
thedir : pdir;
buffer : pdirent;
root,
current : pglob;
begin
{ Get directory }
temp:=dirname(path);
if temp='' then
temp:='.';
temp:=temp+#0;
thedir:=opendir(@temp[1]);
if thedir=nil then
begin
glob:=nil;
linuxerror:=errno;
exit;
end;
temp:=basename(path,''); { get the pattern }
if thedir^.fd<0 then
begin
linuxerror:=errno;
glob:=nil;
exit;
end;
{get the entries}
root:=nil;
current:=nil;
repeat
buffer:=Sys_readdir(thedir);
if buffer=nil then
break;
temp2:=strpas(@(buffer^.name[0]));
if fnmatch(temp,temp2) then
begin
if root=nil then
begin
new(root);
current:=root;
end
else
begin
new(current^.next);
current:=current^.next;
end;
if current=nil then
begin
linuxerror:=ESysENOMEM;
globfree(root);
break;
end;
current^.next:=nil;
getmem(current^.name,length(temp2)+1);
if current^.name=nil then
begin
linuxerror:=ESysENOMEM;
globfree(root);
break;
end;
move(buffer^.name[0],current^.name^,length(temp2)+1);
end;
until false;
closedir(thedir);
glob:=root;
end;
{--------------------------------
FiledescriptorSets
--------------------------------}
Procedure FD_Zero(var fds:fdSet);
{
Clear the set of filedescriptors
}
begin
FillChar(fds,sizeof(fdSet),0);
end;
Procedure FD_Clr(fd:longint;var fds:fdSet);
{
Remove fd from the set of filedescriptors
}
begin
fds[fd shr 5]:=fds[fd shr 5] and (not (1 shl (fd and 31)));
end;
Procedure FD_Set(fd:longint;var fds:fdSet);
{
Add fd to the set of filedescriptors
}
begin
fds[fd shr 5]:=fds[fd shr 5] or (1 shl (fd and 31));
end;
Function FD_IsSet(fd:longint;var fds:fdSet):boolean;
{
Test if fd is part of the set of filedescriptors
}
begin
FD_IsSet:=((fds[fd shr 5] and (1 shl (fd and 31)))<>0);
end;
Function GetFS (var T:Text):longint;
{
Get File Descriptor of a text file.
}
begin
if textrec(t).mode=fmclosed then
exit(-1)
else
GETFS:=textrec(t).Handle
end;
Function GetFS(Var F:File):longint;
{
Get File Descriptor of an unTyped file.
}
begin
{ Handle and mode are on the same place in textrec and filerec. }
if filerec(f).mode=fmclosed then
exit(-1)
else
GETFS:=filerec(f).Handle
end;
{--------------------------------
Stat.Mode Macro's
--------------------------------}
Function S_ISLNK(m:word):boolean;
{
Check mode field of inode for link.
}
begin
S_ISLNK:=(m and STAT_IFMT)=STAT_IFLNK;
end;
Function S_ISREG(m:word):boolean;
{
Check mode field of inode for regular file.
}
begin
S_ISREG:=(m and STAT_IFMT)=STAT_IFREG;
end;
Function S_ISDIR(m:word):boolean;
{
Check mode field of inode for directory.
}
begin
S_ISDIR:=(m and STAT_IFMT)=STAT_IFDIR;
end;
Function S_ISCHR(m:word):boolean;
{
Check mode field of inode for character device.
}
begin
S_ISCHR:=(m and STAT_IFMT)=STAT_IFCHR;
end;
Function S_ISBLK(m:word):boolean;
{
Check mode field of inode for block device.
}
begin
S_ISBLK:=(m and STAT_IFMT)=STAT_IFBLK;
end;
Function S_ISFIFO(m:word):boolean;
{
Check mode field of inode for named pipe (FIFO).
}
begin
S_ISFIFO:=(m and STAT_IFMT)=STAT_IFIFO;
end;
Function S_ISSOCK(m:word):boolean;
{
Check mode field of inode for socket.
}
begin
S_ISSOCK:=(m and STAT_IFMT)=STAT_IFSOCK;
end;
{--------------------------------
Memory functions
--------------------------------}
{$IFDEF I386}
Procedure WritePort (Port : Longint; Value : Byte);
{
Writes 'Value' to port 'Port'
}
begin
asm
movl port,%edx
movb value,%al
outb %al,%dx
end ['EAX','EDX'];
end;
Procedure WritePort (Port : Longint; Value : Word);
{
Writes 'Value' to port 'Port'
}
begin
asm
movl port,%edx
movw value,%ax
outw %ax,%dx
end ['EAX','EDX'];
end;
Procedure WritePort (Port : Longint; Value : Longint);
{
Writes 'Value' to port 'Port'
}
begin
asm
movl port,%edx
movl value,%eax
outl %eax,%dx
end ['EAX','EDX'];
end;
Procedure WritePortB (Port : Longint; Value : Byte);
{
Writes 'Value' to port 'Port'
}
begin
asm
movl port,%edx
movb value,%al
outb %al,%dx
end ['EAX','EDX'];
end;
Procedure WritePortW (Port : Longint; Value : Word);
{
Writes 'Value' to port 'Port'
}
begin
asm
movl port,%edx
movw value,%ax
outw %ax,%dx
end ['EAX','EDX'];
end;
Procedure WritePortL (Port : Longint; Value : Longint);
{
Writes 'Value' to port 'Port'
}
begin
asm
movl port,%edx
movl value,%eax
outl %eax,%dx
end ['EAX','EDX'];
end;
Procedure WritePortl (Port : Longint; Var Buf; Count: longint);
{
Writes 'Count' longints from 'Buf' to Port
}
begin
asm
movl count,%ecx
movl buf,%esi
movl port,%edx
cld
rep
outsl
end ['ECX','ESI','EDX'];
end;
Procedure WritePortW (Port : Longint; Var Buf; Count: longint);
{
Writes 'Count' words from 'Buf' to Port
}
begin
asm
movl count,%ecx
movl buf,%esi
movl port,%edx
cld
rep
outsw
end ['ECX','ESI','EDX'];
end;
Procedure WritePortB (Port : Longint; Var Buf; Count: longint);
{
Writes 'Count' bytes from 'Buf' to Port
}
begin
asm
movl count,%ecx
movl buf,%esi
movl port,%edx
cld
rep
outsb
end ['ECX','ESI','EDX'];
end;
Procedure ReadPort (Port : Longint; Var Value : Byte);
{
Reads 'Value' from port 'Port'
}
begin
asm
movl port,%edx
inb %dx,%al
movl value,%edx
movb %al,(%edx)
end ['EAX','EDX'];
end;
Procedure ReadPort (Port : Longint; Var Value : Word);
{
Reads 'Value' from port 'Port'
}
begin
asm
movl port,%edx
inw %dx,%ax
movl value,%edx
movw %ax,(%edx)
end ['EAX','EDX'];
end;
Procedure ReadPort (Port : Longint; Var Value : Longint);
{
Reads 'Value' from port 'Port'
}
begin
asm
movl port,%edx
inl %dx,%eax
movl value,%edx
movl %eax,(%edx)
end ['EAX','EDX'];
end;
function ReadPortB (Port : Longint): Byte; assembler;
{
Reads a byte from port 'Port'
}
asm
xorl %eax,%eax
movl port,%edx
inb %dx,%al
end ['EAX','EDX'];
function ReadPortW (Port : Longint): Word; assembler;
{
Reads a word from port 'Port'
}
asm
xorl %eax,%eax
movl port,%edx
inw %dx,%ax
end ['EAX','EDX'];
function ReadPortL (Port : Longint): LongInt; assembler;
{
Reads a LongInt from port 'Port'
}
asm
movl port,%edx
inl %dx,%eax
end ['EAX','EDX'];
Procedure ReadPortL (Port : Longint; Var Buf; Count: longint);
{
Reads 'Count' longints from port 'Port' to 'Buf'.
}
begin
asm
movl count,%ecx
movl buf,%edi
movl port,%edx
cld
rep
insl
end ['ECX','EDI','EDX'];
end;
Procedure ReadPortW (Port : Longint; Var Buf; Count: longint);
{
Reads 'Count' words from port 'Port' to 'Buf'.
}
begin
asm
movl count,%ecx
movl buf,%edi
movl port,%edx
cld
rep
insw
end ['ECX','EDI','EDX'];
end;
Procedure ReadPortB (Port : Longint; Var Buf; Count: longint);
{
Reads 'Count' bytes from port 'Port' to 'Buf'.
}
begin
asm
movl count,%ecx
movl buf,%edi
movl port,%edx
cld
rep
insb
end ['ECX','EDI','EDX'];
end;
{$ENDIF}
Initialization
InitLocalTime;
finalization
DoneLocalTime;
End.
{
$Log$
Revision 1.28 2003-03-11 08:26:50 michael
* stringtoppchar should use tabs instead of backspace as delimiter
Revision 1.27 2003/01/05 19:11:32 marco
* small changes originating from introduction of Baseunix to FreeBSD
Revision 1.26 2002/12/18 17:52:07 peter
* replaced some Fp with Sys_ to get cycle working
Revision 1.25 2002/12/18 16:50:39 marco
* Unix RTL generic parts. Linux working, *BSD will follow shortly
Revision 1.24 2002/09/13 13:03:27 jonas
* fixed buffer overflow error in StringToPPChar(), detected using
DIOTA (http://www.elis/rug.ac.be/~ronsse/diota) (which I also work on :)
(merged)
Revision 1.23 2002/09/07 16:01:27 peter
* old logs removed and tabs fixed
Revision 1.22 2002/08/06 13:30:46 sg
* replaced some Longints with Cardinals, to mach the C headers
* updated the termios record
Revision 1.21 2002/03/06 11:34:04 michael
+ Forgot to patch linux.pp
Revision 1.20 2002/01/02 12:22:54 marco
* Removed ifdef arround getepoch.
}
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