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@@ -0,0 +1,549 @@
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+{
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+ $Id$
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+ Copyright (c) 2001 by Carl Eric Codere
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+
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+ The base *BSD syscalls required to implement the system unit. These
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+ are aliased for use in other units (to avoid poluting the system units
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+ interface)
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+
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+ This program is free software; you can redistribute it and/or modify
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+ it under the terms of the GNU General Public License as published by
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+ the Free Software Foundation; either version 2 of the License, or
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+ (at your option) any later version.
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+
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+ This program is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ GNU General Public License for more details.
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+
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+ You should have received a copy of the GNU General Public License
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+ along with this program; if not, write to the Free Software
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+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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+
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+ ****************************************************************************
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+}
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+
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+{$ifdef uselibc}
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+ {$Linklib c}
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+
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+{ var
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+ Errno : cint; external name 'errno';}
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+
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+ function sys_time(var tloc:time_t): time_t; cdecl; external name 'time';
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+ function sys_open(const path: pchar; flags : cint; mode: mode_t):cint; cdecl; external name 'open';
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+ function sys_close(fd : cint): cint; cdecl; external name 'close';
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+ function sys_lseek(fd : cint; offset : off_t; whence : cint): off_t; cdecl; external name 'lseek';
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+ function sys_read(fd: cint; buf: pchar; nbytes : size_t): ssize_t; cdecl; external name 'read';
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+ function sys_write(fd: cint;const buf:pchar; nbytes : size_t): ssize_t; cdecl; external name 'write';
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+ function sys_unlink(const path: pchar): cint; cdecl; external name 'unlink';
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+ function sys_rename(const old : pchar; const newpath: pchar): cint; cdecl;external name 'rename';
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+ function sys_stat(const path: pchar; var buf : stat): cint; cdecl; external name 'stat';
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+ function sys_chdir(const path : pchar): cint; cdecl; external name 'chdir';
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+ function sys_mkdir(const path : pchar; mode: mode_t):cint; cdecl; external name 'mkdir';
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+ function sys_rmdir(const path : pchar): cint; cdecl; external name 'rmdir';
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+ function sys_opendir(const dirname : pchar): pdir; cdecl; external name 'opendir';
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+ function sys_readdir(dirp : pdir) : pdirent;cdecl; external name 'readdir';
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+ function sys_closedir(dirp : pdir): cint; cdecl; external name 'closedir';
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+ procedure sys_exit(status : cint); cdecl; external name '_exit';
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+ function sys_sigaction(sig: cint; var act : sigactionrec; var oact : sigactionrec): cint; cdecl; external name 'sigaction';
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+ function sys_ftruncate(fd : cint; flength : off_t): cint; cdecl; external name 'ftruncate';
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+ function sys_rename(const old : pchar; const newpath: pchar): cint; cdecl;external name 'rename';
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+ function sys_fstat(fd : cint; var sb : stat): cint; cdecl; external name 'fstat';
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+ function sys_fork : pid_t; cdecl; external name 'fork';
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+ function sys_execve(const path : pchar; const argv : ppchar; const envp: ppchar): cint; cdecl; external name 'execve';
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+ function sys_waitpid(pid : pid_t; var stat_loc : cint; options: cint): pid_t; cdecl; external name 'waitpid';
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+ function sys_access(const pathname : pchar; amode : cint): cint; cdecl; external name 'access';
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+
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+// function sys_uname(var name: utsname): cint; cdecl; external name 'uname';
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+
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+ function sys_Dup(oldd:cint):cint; cdecl; external name 'dup';
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+ function sys_Dup2(oldd:cint;newd:cint):cint; cdecl; external name 'dup2';
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+
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+
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+{$else}
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+
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+{*****************************************************************************
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+ --- Main:The System Call Self ---
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+*****************************************************************************}
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+
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+{ The system designed for Linux can't be used for *BSD so easily, since
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+ *BSD pushes arguments, instead of loading them to registers.}
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+
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+// Var ErrNo : Longint;
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+
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+{$I syscall.inc}
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+{$I sysnr.inc}
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+{$I bsdmacro.inc}
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+{$I bsdtypes.inc}
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+
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+// Should be moved to a FreeBSD specific unit in the future.
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+
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+function sys_time(var tloc:time_t): time_t; [public, alias : 'FPC_SYSC_TIME'];
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+
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+VAR tv : timeval;
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+ tz : timezone;
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+ retval : longint;
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+
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+begin
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+ Retval:=do_syscall(syscall_nr_gettimeofday,longint(@tv),longint(@tz));
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+ If retval=-1 then
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+ sys_time:=-1
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+ else
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+ Begin
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+// If Assigned(tloc) Then
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+ TLoc:=tv.sec;
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+ sys_time:=tv.sec;
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+ End;
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+End;
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+
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+{*****************************************************************************
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+ --- File:File handling related calls ---
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+*****************************************************************************}
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+
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+function sys_open(const path: pchar; flags : cint; mode: mode_t):cint; [public, alias : 'FPC_SYSC_OPEN'];
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+
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+Begin
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+ sys_open:=do_syscall(syscall_nr_open,longint(path),longint(flags),longint(mode));
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+End;
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+
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+function sys_close(fd : cint): cint;
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+
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+begin
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+ sys_close:=do_syscall(syscall_nr_close,fd);
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+end;
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+
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+function sys_lseek(fd : cint; offset : off_t; whence : cint): off_t; [public, alias : 'FPC_SYSC_LSEEK'];
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+{
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+this one is special for the return value being 64-bit..
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+hi/lo offset not yet tested.
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+
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+NetBSD: ok, but implicit return value in edx:eax
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+FreeBSD: same implementation as NetBSD.
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+}
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+
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+begin
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+ {ugly implicit returnvalue}
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+ do_syscall(syscall_nr___syscall,syscall_nr_lseek,0,longint(fd),0,lo(Offset),{0} hi(offset),Whence);
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+end;
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+
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+function sys_read(fd: cint; buf: pchar; nbytes : size_t): ssize_t; [public, alias : 'FPC_SYSC_READ'];
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+
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+begin
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+ sys_read:=do_syscall(syscall_nr_read,Fd,longint(buf),nbytes);
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+end;
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+
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+function sys_write(fd: cint;const buf:pchar; nbytes : size_t): ssize_t; [public, alias : 'FPC_SYSC_WRITE'];
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+
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+begin
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+ sys_write:=do_syscall(syscall_nr_write,Fd,longint(buf),nbytes);
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+end;
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+
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+function sys_unlink(const path: pchar): cint; [public, alias : 'FPC_SYSC_UNLINK'];
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+
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+begin
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+ sys_unlink:=do_syscall(syscall_nr_unlink,longint(path));
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+end;
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+
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+function sys_rename(const old : pchar; const newpath: pchar): cint; [public, alias : 'FPC_SYSC_RENAME'];
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+
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+begin
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+ sys_rename:=do_syscall(syscall_nr_rename,longint(old),longint(newpath));
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+end;
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+
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+function sys_stat(const path: pchar; var buf : stat):cint; [public, alias : 'FPC_SYSC_STAT'];
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+
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+begin
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+ sys_stat:=do_syscall(syscall_nr_stat,longint(path),longint(@buf));
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+end;
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+
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+
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+{*****************************************************************************
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+ --- Directory:Directory related calls ---
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+*****************************************************************************}
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+
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+function sys_chdir(const path : pchar): cint; [public, alias : 'FPC_SYSC_CHDIR'];
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+
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+begin
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+ sys_chdir:=do_syscall(syscall_nr_chdir,longint(path));
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+end;
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+
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+function sys_mkdir(const path : pchar; mode: mode_t):cint; [public, alias : 'FPC_SYSC_MKDIR'];
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+
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+begin {Mode is 16-bit on F-BSD}
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+ sys_mkdir:=do_syscall(syscall_nr_mkdir,longint(path),mode);
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+end;
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+
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+function sys_rmdir(const path : pchar): cint; [public, alias : 'FPC_SYSC_RMDIR'];
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+
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+begin
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+ sys_rmdir:=do_syscall(syscall_nr_rmdir,longint(path));
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+end;
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+
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+{$ifndef NewReaddir}
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+
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+const DIRBLKSIZ=1024;
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+
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+
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+function sys_opendir(const dirname : pchar): pdir; [public, alias : 'FPC_SYSC_OPENDIR'];
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+
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+var
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+ fd:longint;
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+ st:stat;
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+ ptr:pdir;
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+begin
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+ sys_opendir:=nil;
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+ if sys_stat(dirname,st)<0 then
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+ exit;
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+{ Is it a dir ? }
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+ if not((st.st_mode and $f000)=$4000)then
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+ begin
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+ errno:=sys_enotdir;
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+ exit
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+ end;
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+{ Open it}
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+ fd:=sys_open(dirname,O_RDONLY,438);
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+ if fd<0 then
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+ Begin
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+ Errno:=-1;
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+ exit;
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+ End;
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+ new(ptr);
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+ if ptr=nil then
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+ Begin
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+ Errno:=1;
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+ exit;
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+ End;
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+ Getmem(ptr^.dd_buf,2*DIRBLKSIZ);
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+ if ptr^.dd_buf=nil then
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+ exit;
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+ ptr^.dd_fd:=fd;
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+ ptr^.dd_loc:=-1;
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+ ptr^.dd_rewind:=longint(ptr^.dd_buf);
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+ ptr^.dd_size:=0;
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+// ptr^.dd_max:=sizeof(ptr^.dd_buf^);
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+ sys_opendir:=ptr;
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+end;
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+
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+function sys_closedir(dirp : pdir): cint; [public, alias : 'FPC_SYSC_CLOSEDIR'];
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+
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+begin
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+ sys_closedir:=sys_close(dirp^.dd_fd);
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+ Freemem(dirp^.dd_buf);
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+ dispose(dirp);
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+end;
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+
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+function sys_readdir(dirp : pdir) : pdirent; [public, alias : 'FPC_SYSC_READDIR'];
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+
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+{Different from Linux, Readdir on BSD is based on Getdents, due to the
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+missing of the readdir syscall.
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+Getdents requires the buffer to be larger than the blocksize.
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+This usually the sectorsize =512 bytes, but maybe tapedrives and harddisks
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+with blockmode have this higher?}
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+
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+function readbuffer:longint;
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+
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+var retval :longint;
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+
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+begin
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+ Retval:=do_syscall(syscall_nr_getdents,longint(dirp^.dd_fd),longint(@dirp^.dd_buf^),DIRBLKSIZ {sizeof(getdentsbuffer)});
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+ dirp^.dd_rewind:=longint(dirp^.dd_buf);
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+ if retval=0 then
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+ begin
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+ dirp^.dd_rewind:=0;
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+ dirp^.dd_loc:=0;
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+ end
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+ else
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+ dirP^.dd_loc:=retval;
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+ readbuffer:=retval;
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+end;
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+
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+var
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+ FinalEntry : pdirent;
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+ novalid : boolean;
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+ Reclen : Longint;
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+ CurEntry : PDirent;
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+
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+begin
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+ if (dirp^.dd_buf=nil) or (dirp^.dd_loc=0) THEN
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+ exit(nil);
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+ if (dirp^.dd_loc=-1) OR {First readdir on this pdir. Initial fill of buffer}
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+ (dirp^.dd_rewind>=(longint(dirp^.dd_buf)+dirblksiz)) then {no more entries left?}
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+ Begin
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+ if readbuffer=0 then {succesful read?}
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+ Exit(NIL); {No more data}
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+ End;
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+ FinalEntry:=NIL;
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+ CurEntry:=nil;
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+ repeat
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+ novalid:=false;
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+ CurEntry:=pdirent(dirp^.dd_rewind);
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+ RecLen:=CurEntry^.d_reclen;
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+ if RecLen<>0 Then
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+ begin {valid direntry?}
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+ if CurEntry^.d_fileno<>0 then
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+ FinalEntry:=CurEntry;
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+ inc(dirp^.dd_rewind,Reclen);
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+ end
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+ else
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+ begin {block entirely searched or reclen=0}
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+ Novalid:=True;
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+ if dirp^.dd_loc<>0 THEN {blocks left?}
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+ if readbuffer()<>0 then {succesful read?}
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+ novalid:=false;
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+ end;
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+ until (FinalEntry<>nil) or novalid;
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+ If novalid then
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+ FinalEntry:=nil;
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+ Sys_ReadDir:=FinalEntry;
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+end;
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+{$endif}
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+
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+{*****************************************************************************
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+ --- Process:Process & program handling - related calls ---
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+*****************************************************************************}
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+
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+procedure sys_exit(status : cint); [public, alias : 'FPC_SYSC_EXIT'];
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+
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+begin
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+ do_syscall(syscall_nr_exit,status);
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+end;
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+
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+{
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+ Change action of process upon receipt of a signal.
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+ Signum specifies the signal (all except SigKill and SigStop).
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+ If Act is non-nil, it is used to specify the new action.
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+ If OldAct is non-nil the previous action is saved there.
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+}
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+
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+function sys_sigaction(sig: cint; var act : sigactionrec; var oact : sigactionrec): cint; [public, alias : 'FPC_SYSC_SIGACTION'];
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+
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+{
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+ Change action of process upon receipt of a signal.
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+ Signum specifies the signal (all except SigKill and SigStop).
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+ If Act is non-nil, it is used to specify the new action.
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+ If OldAct is non-nil the previous action is saved there.
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+}
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+
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+begin
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+ do_syscall(syscall_nr_sigaction,longint(sig),longint(@act),longint(@oact));
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+end;
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+
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+(*=================== MOVED from sysunix.inc ========================*)
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+
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+function sys_ftruncate(fd : cint; flength : off_t): cint; [public, alias : 'FPC_SYSC_FTRUNCATE'];
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+{ See notes lseek. This one is completely similar.
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+
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+}
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+begin
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+ Do_syscall(syscall_nr___syscall,syscall_nr_ftruncate,0,fd,0,lo(flength),hi(flength));
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+end;
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+
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+function sys_fstat(fd : cint; var sb : stat): cint; [public, alias : 'FPC_SYSC_FSTAT'];
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+
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+begin
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+ Sys_FStat:=do_SysCall(syscall_nr_fstat,fd,longint(@sb));
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+end;
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+
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+{$ifdef NewReaddir}
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+{$I readdir.inc}
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+{$endif}
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+
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+function sys_fork : pid_t; [public, alias : 'FPC_SYSC_FORK'];
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+{
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+ This function issues the 'fork' System call. the program is duplicated in memory
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+ and Execution continues in parent and child process.
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+ In the parent process, fork returns the PID of the child. In the child process,
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+ zero is returned.
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+ A negative value indicates that an error has occurred, the error is returned in
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+ LinuxError.
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+}
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+
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+Begin
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+ sys_fork:=Do_syscall(SysCall_nr_fork);
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+End;
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+
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+{
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+function sys_execve(const path : pathstr; const argv : ppchar; const envp: ppchar): cint;
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+}
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+{
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+ Replaces the current program by the program specified in path,
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+ arguments in args are passed to Execve.
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+ environment specified in ep is passed on.
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+}
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+
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+{
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+Begin
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+ path:=path+#0;
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+ do_syscall(syscall_nr_Execve,longint(@path[1]),longint(Argv),longint(envp));
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+End;
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+}
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+
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+function sys_execve(const path : pchar; const argv : ppchar; const envp: ppchar): cint; [public, alias : 'FPC_SYSC_EXECVE'];
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+{
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+ Replaces the current program by the program specified in path,
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+ arguments in args are passed to Execve.
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+ environment specified in ep is passed on.
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+}
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|
+
|
|
|
+Begin
|
|
|
+ do_syscall(syscall_nr_Execve,longint(path),longint(Argv),longint(envp));
|
|
|
+End;
|
|
|
+
|
|
|
+function sys_waitpid(pid : pid_t; var stat_loc : cint; options: cint): pid_t; [public, alias : 'FPC_SYSC_WAITPID'];
|
|
|
+{
|
|
|
+ Waits until a child with PID Pid exits, or returns if it is exited already.
|
|
|
+ Any resources used by the child are freed.
|
|
|
+ The exit status is reported in the adress referred to by Status. It should
|
|
|
+ be a longint.
|
|
|
+}
|
|
|
+
|
|
|
+begin
|
|
|
+ sys_WaitPID:=do_syscall(syscall_nr_WaitPID,PID,longint(Stat_loc),options,0);
|
|
|
+end;
|
|
|
+
|
|
|
+function sys_access(const pathname : pchar; amode : cint): cint; [public, alias : 'FPC_SYSC_ACCESS'];
|
|
|
+{
|
|
|
+ Test users access rights on the specified file.
|
|
|
+ Mode is a mask xosisting of one or more of R_OK, W_OK, X_OK, F_OK.
|
|
|
+ R,W,X stand for read,write and Execute access, simultaneously.
|
|
|
+ F_OK checks whether the test would be allowed on the file.
|
|
|
+ i.e. It checks the search permissions in all directory components
|
|
|
+ of the path.
|
|
|
+ The test is done with the real user-ID, instead of the effective.
|
|
|
+ If access is denied, or an error occurred, false is returned.
|
|
|
+ If access is granted, true is returned.
|
|
|
+ Errors other than no access,are reported in unixerror.
|
|
|
+}
|
|
|
+
|
|
|
+begin
|
|
|
+ sys_Access:=do_syscall(syscall_nr_access,longint(pathname),amode);
|
|
|
+end;
|
|
|
+{
|
|
|
+function sys_access(const pathname : pathstr; amode : cint): cint;
|
|
|
+
|
|
|
+{
|
|
|
+ Test users access rights on the specified file.
|
|
|
+ Mode is a mask xosisting of one or more of R_OK, W_OK, X_OK, F_OK.
|
|
|
+ R,W,X stand for read,write and Execute access, simultaneously.
|
|
|
+ F_OK checks whether the test would be allowed on the file.
|
|
|
+ i.e. It checks the search permissions in all directory components
|
|
|
+ of the path.
|
|
|
+ The test is done with the real user-ID, instead of the effective.
|
|
|
+ If access is denied, or an error occurred, false is returned.
|
|
|
+ If access is granted, true is returned.
|
|
|
+ Errors other than no access,are reported in unixerror.
|
|
|
+}
|
|
|
+
|
|
|
+begin
|
|
|
+ pathname:=pathname+#0;
|
|
|
+ Access:=do_syscall(syscall_nr_access, longint(@pathname[1]),mode)=0;
|
|
|
+end;
|
|
|
+}
|
|
|
+
|
|
|
+function sys_Dup(oldd:cint):cint; [public, alias : 'FPC_SYSC_DUP'];
|
|
|
+{
|
|
|
+ Copies the filedescriptor oldfile to newfile
|
|
|
+}
|
|
|
+
|
|
|
+begin
|
|
|
+ sys_dup:=Do_syscall(syscall_nr_dup,oldd);
|
|
|
+end;
|
|
|
+
|
|
|
+function sys_Dup2(oldd:cint;newd:cint):cint; [public, alias : 'FPC_SYSC_DUP2'];
|
|
|
+{
|
|
|
+ Copies the filedescriptor oldfile to newfile
|
|
|
+}
|
|
|
+
|
|
|
+begin
|
|
|
+ sys_dup2:=do_syscall(syscall_nr_dup2,oldd,newd);
|
|
|
+end;
|
|
|
+
|
|
|
+CONST
|
|
|
+ { Constansts for MMAP }
|
|
|
+ MAP_PRIVATE =2;
|
|
|
+ MAP_ANONYMOUS =$1000;
|
|
|
+
|
|
|
+
|
|
|
+Function Sys_mmap(adr,len,prot,flags,fdes,off:longint):longint; [public, alias : 'FPC_SYSC_MMAP'];
|
|
|
+begin
|
|
|
+ Sys_mmap:=do_syscall(syscall_nr_mmap,Adr,Len,Prot,Flags,fdes,off,0);
|
|
|
+end;
|
|
|
+
|
|
|
+Function sbrk(size : longint) : Longint;
|
|
|
+begin
|
|
|
+ sbrk:=Sys_mmap(0,Size,3,MAP_PRIVATE+MAP_ANONYMOUS,-1,0);
|
|
|
+ if sbrk<>-1 then
|
|
|
+ errno:=0;
|
|
|
+ {! It must be -1, not 0 as before, see heap.inc. Should be in sysmmap?}
|
|
|
+end;
|
|
|
+
|
|
|
+{
|
|
|
+ Interface to Unix ioctl call.
|
|
|
+ Performs various operations on the filedescriptor Handle.
|
|
|
+ Ndx describes the operation to perform.
|
|
|
+ Data points to data needed for the Ndx function. The structure of this
|
|
|
+ data is function-dependent.
|
|
|
+}
|
|
|
+Function Sys_IOCtl(Handle,Ndx: Longint;Data: Pointer):LongInt; [public, alias : 'FPC_SYSC_IOCTL'];
|
|
|
+// This was missing here, instead hardcoded in Do_IsDevice
|
|
|
+begin
|
|
|
+ Sys_IOCtl:=do_SysCall(syscall_nr_ioctl,handle,Ndx,longint(data));
|
|
|
+end;
|
|
|
+
|
|
|
+CONST
|
|
|
+ IOCtl_TCGETS=$5401;
|
|
|
+
|
|
|
+Function Do_IsDevice(Handle:Longint):boolean;
|
|
|
+{
|
|
|
+ Interface to Unix ioctl call.
|
|
|
+ Performs various operations on the filedescriptor Handle.
|
|
|
+ Ndx describes the operation to perform.
|
|
|
+ Data points to data needed for the Ndx function. The structure of this
|
|
|
+ data is function-dependent.
|
|
|
+}
|
|
|
+var
|
|
|
+ Data : array[0..255] of byte; {Large enough for termios info}
|
|
|
+begin
|
|
|
+ Do_IsDevice:=(sys_ioctl(handle,IOCTL_TCGETS,@data)<>-1);
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+{$endif}
|
|
|
+
|
|
|
+{
|
|
|
+ $Log$
|
|
|
+ Revision 1.1 2002-08-19 12:29:11 marco
|
|
|
+ * First working POSIX *BSD system unit.
|
|
|
+
|
|
|
+
|
|
|
+ Revision 1.2 2002/08/04 04:29:34 marco
|
|
|
+ * More POSIX updates. Small changes to lseek and ftruncate in osposix.inc
|
|
|
+ Initial versions of the type includefiles
|
|
|
+
|
|
|
+ Revision 1.1 2002/08/03 19:34:19 marco
|
|
|
+ * Initial *BSD versions. Seems that OpenBSD doesn't need much change,
|
|
|
+ NetBSD may need some fixes to stat record and ftruncate and lseek.
|
|
|
+ It is all close together, and it should be doable to have just one copy
|
|
|
+ of these for *BSD.
|
|
|
+
|
|
|
+ Revision 1.1.2.5 2001/12/09 03:31:50 carl
|
|
|
+ + wifsignaled() added
|
|
|
+
|
|
|
+ Revision 1.1.2.4 2001/12/03 03:13:30 carl
|
|
|
+ * fix ftruncate prototype
|
|
|
+ * fix rename prototype
|
|
|
+ * change readdir / closedir prototype
|
|
|
+
|
|
|
+ Revision 1.1.2.3 2001/11/30 03:50:43 carl
|
|
|
+ + int -> cint
|
|
|
+ + missing prototypes added
|
|
|
+
|
|
|
+ Revision 1.1.2.2 2001/11/28 03:08:29 carl
|
|
|
+ * int -> cint
|
|
|
+ + several other stuff renamed
|
|
|
+
|
|
|
+ Revision 1.1.2.1 2001/08/15 00:15:04 carl
|
|
|
+ - renamed
|
|
|
+
|
|
|
+}
|