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391 lines
13 KiB
ObjectPascal
391 lines
13 KiB
ObjectPascal
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 2001 by Carl Eric Codere
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development team
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POSIX Compliant interface unit
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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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.
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**********************************************************************}
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{$IFNDEF FPC_DOTTEDUNITS}
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unit posix;
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{$ENDIF FPC_DOTTEDUNITS}
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interface
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{***********************************************************************}
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{ POSIX PUBLIC INTERFACE }
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{***********************************************************************}
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{$i errno.inc}
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{$i osposixh.inc}
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function sys_fork : pid_t;
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function sys_execve(const path : PAnsiChar; const argv : PPAnsiChar; const envp: PPAnsiChar): cint;
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function sys_waitpid(pid : pid_t; var stat_loc : cint; options: cint): pid_t;
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procedure sys_exit(status : cint); cdecl; external name '_exit';
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function sys_uname(var name: utsname): cint;
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function sys_opendir(const dirname : PAnsiChar): pdir;
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function sys_readdir(dirp : pdir) : pdirent;
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function sys_closedir(dirp : pdir): cint;
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function sys_chdir(const path : PAnsiChar): cint;
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function sys_open(const path: PAnsiChar; flags : cint; mode: mode_t):cint;
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function sys_mkdir(const path : PAnsiChar; mode: mode_t):cint;
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function sys_unlink(const path: PAnsiChar): cint;
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function sys_rmdir(const path : PAnsiChar): cint;
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function sys_rename(const old : PAnsiChar; const newpath: PAnsiChar): cint;
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function sys_access(const pathname : PAnsiChar; amode : cint): cint;
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function sys_close(fd : cint): cint;
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function sys_read(fd: cint; buf: PAnsiChar; nbytes : size_t): ssize_t;
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function sys_write(fd: cint;const buf:PAnsiChar; nbytes : size_t): ssize_t;
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function sys_lseek(fd : cint; offset : off_t; whence : cint): off_t;
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function sys_time(var tloc:time_t): time_t;
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function sys_ftruncate(fd : cint; flength : off_t): cint;
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function sys_sigaction(sig: cint; var act : sigactionrec; var oact : sigactionrec): cint;
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function sys_fstat(fd : cint; var sb : stat): cint;
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function sys_stat(const path: PAnsiChar; var buf : stat): cint;
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function S_ISDIR(m : mode_t): boolean;
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function S_ISCHR(m : mode_t): boolean;
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function S_ISBLK(m : mode_t): boolean;
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function S_ISREG(m : mode_t): boolean;
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function S_ISFIFO(m : mode_t): boolean;
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function wifexited(status : cint): cint;
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function wexitstatus(status : cint): cint;
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function wstopsig(status : cint): cint;
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function wifsignaled(status : cint): cint;
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implementation
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function int_fork : pid_t; cdecl; external name 'fork';
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function int_execve(const path : PAnsiChar; const argv : PPAnsiChar; const envp: PPAnsiChar): cint; cdecl; external name 'execve';
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function int_waitpid(pid : pid_t; var stat_loc : cint; options: cint): pid_t; cdecl; external name 'waitpid';
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function int_uname(var name: utsname): cint; cdecl; external name 'uname';
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function int_opendir(const dirname : PAnsiChar): pdir; cdecl; external name 'opendir';
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function int_readdir(dirp : pdir) : pdirent;cdecl; external name 'readdir';
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function int_closedir(dirp : pdir): cint; cdecl; external name 'closedir';
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function int_chdir(const path : PAnsiChar): cint; cdecl; external name 'chdir';
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function int_open(const path: PAnsiChar; flags : cint; mode: mode_t):cint; cdecl; external name 'open';
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function int_mkdir(const path : PAnsiChar; mode: mode_t):cint; cdecl; external name 'mkdir';
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function int_unlink(const path: PAnsiChar): cint; cdecl; external name 'unlink';
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function int_rmdir(const path : PAnsiChar): cint; cdecl; external name 'rmdir';
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function int_rename(const old : PAnsiChar; const newpath: PAnsiChar): cint; cdecl;external name 'rename';
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function int_access(const pathname : PAnsiChar; amode : cint): cint; cdecl; external name 'access';
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function int_close(fd : cint): cint; cdecl; external name 'close';
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function int_read(fd: cint; buf: PAnsiChar; nbytes : size_t): ssize_t; cdecl; external name 'read';
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function int_write(fd: cint;const buf:PAnsiChar; nbytes : size_t): ssize_t; cdecl; external name 'write';
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function int_lseek(fd : cint; offset : off_t; whence : cint): off_t; cdecl; external name 'lseek';
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function int_time(var tloc:time_t): time_t; cdecl; external name 'time';
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function int_ftruncate(fd : cint; flength : off_t): cint; cdecl; external name 'ftruncate';
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function int_sigaction(sig: cint; var act : sigactionrec; var oact : sigactionrec): cint; cdecl; external name 'sigaction';
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function int_fstat(fd : cint; var sb : stat): cint; cdecl; external name 'fstat';
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function int_stat(const path: PAnsiChar; var buf : stat): cint; cdecl; external name 'stat';
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function sys_fork : pid_t;
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begin
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sys_fork := int_fork;
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if sys_fork <> - 1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_execve(const path : PAnsiChar; const argv : PPAnsiChar; const envp: PPAnsiChar): cint;
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begin
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sys_execve := int_execve(path, argv, envp);
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if sys_execve <> - 1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_waitpid(pid : pid_t; var stat_loc : cint; options: cint): pid_t;
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begin
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sys_waitpid := int_waitpid(pid, stat_loc, options);
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if sys_waitpid <> - 1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_uname(var name: utsname): cint;
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begin
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sys_uname := int_uname(name);
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if sys_uname <> - 1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_opendir(const dirname : PAnsiChar): pdir;
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begin
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sys_opendir := int_opendir(dirname);
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if sys_opendir <> nil then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_readdir(dirp : pdir) : pdirent;
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begin
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sys_readdir := int_readdir(dirp);
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if sys_readdir <> nil then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_closedir(dirp : pdir): cint;
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begin
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sys_closedir := int_closedir(dirp);
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if sys_closedir <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_chdir(const path : PAnsiChar): cint;
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begin
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sys_chdir := int_chdir(path);
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if sys_chdir <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_open(const path: PAnsiChar; flags : cint; mode: mode_t):cint;
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begin
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sys_open:= int_open(path, flags, mode);
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if sys_open <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_mkdir(const path : PAnsiChar; mode: mode_t):cint;
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begin
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sys_mkdir:= int_mkdir(path, mode);
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if sys_mkdir <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_unlink(const path: PAnsiChar): cint;
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begin
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sys_unlink := int_unlink(path);
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if sys_unlink <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_rmdir(const path : PAnsiChar): cint;
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begin
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sys_rmdir := int_rmdir(path);
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if sys_rmdir <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_rename(const old : PAnsiChar; const newpath: PAnsiChar): cint;
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begin
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sys_rename := int_rename(old, newpath);
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if sys_rename <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_access(const pathname : PAnsiChar; amode : cint): cint;
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begin
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sys_access := int_access(pathname, amode);
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if sys_access <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_close(fd : cint): cint;
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begin
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sys_close := int_close(fd);
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if sys_close <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_read(fd: cint; buf: PAnsiChar; nbytes : size_t): ssize_t;
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begin
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sys_read := int_read(fd, buf, nbytes);
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if sys_read <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_write(fd: cint;const buf:PAnsiChar; nbytes : size_t): ssize_t;
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begin
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sys_write := int_write(fd, buf, nbytes);
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if sys_write <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_lseek(fd : cint; offset : off_t; whence : cint): off_t;
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begin
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sys_lseek := int_lseek(fd, offset, whence);
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if sys_lseek <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_time(var tloc:time_t): time_t;
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begin
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sys_time := int_time(tloc);
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if sys_time <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_ftruncate(fd : cint; flength : off_t): cint;
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begin
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sys_ftruncate := int_ftruncate(fd, flength);
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if sys_ftruncate <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_sigaction(sig: cint; var act : sigactionrec; var oact : sigactionrec): cint;
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begin
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sys_sigaction := int_sigaction(sig, act, oact);
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if sys_sigaction <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_fstat(fd : cint; var sb : stat): cint;
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begin
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sys_fstat := int_fstat(fd, sb);
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if sys_fstat <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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function sys_stat(const path: PAnsiChar; var buf : stat): cint;
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begin
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sys_stat := int_stat(path, buf);
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if sys_stat <> -1 then
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begin
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errno := 0; { reset errno when the call succeeds, contrary to libc }
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end;
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end;
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const
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_S_IFMT = $F000; (* Type of file *)
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_S_IFIFO = $1000; (* FIFO *)
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_S_IFCHR = $2000; (* Character special *)
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_S_IFDIR = $4000; (* Directory *)
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_S_IFNAM = $5000; (* Special named file *)
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_S_IFBLK = $6000; (* Block special *)
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_S_IFREG = $8000; (* Regular *)
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_S_IFLNK = $A000; (* Symbolic link *)
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_S_IFSOCK = $C000; (* Socket *)
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function S_ISDIR(m : mode_t): boolean;
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begin
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if (m and _S_IFMT) = _S_IFDIR then
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S_ISDIR := true
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else
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S_ISDIR := false;
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end;
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function S_ISCHR(m : mode_t): boolean;
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begin
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if (m and _S_IFMT) = _S_IFCHR then
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S_ISCHR := true
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else
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S_ISCHR := false;
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end;
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function S_ISBLK(m : mode_t): boolean;
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begin
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if (m and _S_IFMT) = _S_IFBLK then
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S_ISBLK := true
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else
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S_ISBLK := false;
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end;
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function S_ISREG(m : mode_t): boolean;
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begin
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if (m and _S_IFMT) = _S_IFREG then
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S_ISREG := true
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else
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S_ISREG := false;
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end;
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function S_ISFIFO(m : mode_t): boolean;
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begin
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if (m and _S_IFMT) = _S_IFIFO then
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S_ISFIFO := true
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else
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S_ISFIFO := false;
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end;
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function wifexited(status : cint): cint;
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begin
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wifexited := longint((status and $FF) = 0);
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end;
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function wexitstatus(status : cint): cint;
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begin
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wexitstatus := (((status) shr 8) and $FF);
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end;
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function wstopsig(status : cint): cint;
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begin
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wstopsig := (((status) shr 8) and $FF);
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end;
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function wifsignaled(status : cint): cint;
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begin
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if ((status and $FF) <> 0) and ((status and $FF00)=0) then
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wifsignaled := 1
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else
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wifsignaled := 0;
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end;
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end.
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